1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
3 about object allocation.
4 * optimization: more efficient type-checks for FIXNUMs when the value
5 is known to be a signed word on x86 and x86-64.
6 * improvement: failure to provide requested stack allocation compiler notes
7 provided in all cases (requested stack allocation not happening without a
8 note being issued is now considered a bug.)
9 * optimization: compiler is smarter about delegating argument type checks to
11 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
12 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
13 (thanks to Paul Khuong)
14 * bug fix: looping around HANDLER-CASE could silently consume stack space
15 on each iteration. (reported by "foobar")
16 * bug fix: better error signalling when calls to functions seeking elements
17 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
18 (reported by Tobias Rittweiler)
19 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
20 directory components now works as it used to. (various prolems reported by
21 Michael Becker, Gabriel Dos Reis, and Cyrus Harmon)
22 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
23 (reported by Elliot Slaughter, thanks to Stas Boukarev)
24 * bug fix: bogus undefined variable warnings from fopcompiled references to
25 global variables. (thanks to Lars Rune Nøstdal)
27 changes in sbcl-1.0.29 relative to 1.0.28:
28 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
29 https://bugs.launchpad.net/sbcl
30 Bugs can be reported directly there, or by sending email to
31 sbcl-bugs@lists.sourceforge.net
32 (no subscription required.)
33 * minor incompatible change: under weak type checking policy integer
34 types are weakened less aggressively.
35 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
36 allowed to return, which causes SBCL to quit with exit status 0. Previously
37 if the function returned with a small integer return value, that value
38 was accidentally reused as the exit status.
39 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
40 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
41 :HASH-FUNCTION argument. Refer to user manual for details.
42 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
44 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
45 microseconds since the Unix epoch on all platforms.
46 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
47 allows the compiler to safely elide boundedness checks for special
49 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
50 the symbol, prohibits both lexical and dynamic binding. This is mainly an
51 efficiency measure for threaded platforms, but also valueable in
53 * new feature: UNC pathnames are now understood by the system on Windows.
54 * optimization: the compiler uses a specialized version of FILL when the
55 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
57 * optimization: accesses to potentially non-simple arrays where element type
58 is known are 50% faster.
59 * optimization: compiler now generates faster array typechecking code.
60 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
62 * optimization: multidimensional array accesses in the absence of type
63 information regarding array rank are approximately 10% faster due to
64 open coding of ARRAY-RANK.
65 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
66 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
68 * optimization: result of call to VECTOR can now be stack allocated.
69 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
70 as long as the resulting array is one-dimensional and has a known
71 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
72 length of the list matches the known length of the vector does not
73 allocate the list as an intermediate step. Ditto for VECTOR and simple
75 * optimization: MAKE-ARRAY can now stack allocate in the presence of
76 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
77 known element type, and is known to be simple and one dimensional.
78 * improvement: SBCL now emits a compiler note where stack allocation was
79 requested but could not be provided (not in all cases, unfortunately)
80 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
81 * improvement: pretty-printing loop has been implemented properly. (thanks
83 * documentation: CLOS slot typechecing policy has been documented.
84 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
85 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
86 pointer, leading to memory faults. (thanks to Bart Botta)
87 * bug fix: better floating point exception handling on x86/OpenBSD.
88 (thanks to Josh Elsasser)
89 * bug fix: exit status from QUIT when called under --script was lost
90 (reported by Hubert Kauker)
91 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
92 same implementation of FILL to initialize the array, even if a more
93 efficient one was available (reported by Stas Boukarev, thanks to
95 * bug fix: potential miscompilation of array stack allocation on x86 and
96 x86-64. (reported by Time Tossavainen)
97 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
98 result in their subforms being treated as top level forms. (reported by
100 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
101 than a machine register could leave garbage in the high bits of the
102 result register (bug 316325).
103 * bug fix: disable address space randomization Linux/x86-64 as well,
104 not just x86-64. (reported by Ken Olum)
105 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
106 generate incorrect code.
107 * bug fix: #201; type inference for CONS and ARRAY types could derive
108 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
109 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
110 could not be assigned to or bound with PROGV. (reported by Lorenz
112 * bug fix: the value of CL:- in the inspector was the previous expression
113 evaluated rather than the expression being evaluated.
114 * bug fix: constants can no longer be locally declared special.
115 * bug fix: signals delivered to threads started from foreign land (read:
116 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
117 thread by blocking all signals and resignalling.
118 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
119 from :INITFORM, if any.
121 changes in sbcl-1.0.28 relative to 1.0.27:
122 * a number of bugs in cross-compilation have been fixed, with the ultimate
123 result that building under (at least) clisp should be much more reliable.
124 * minor incompatible changes: echo-streams now propagate unread-char to the
125 underlying input stream, and no longer permit unreading more than one
127 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
128 frames, allowing for instance more reliable backtraces.
129 * improvement: the debugger REPL can now reference lexical variables
130 by name directly for code compiled with (DEBUG 3).
131 * improvement: errors from malformed declarations now have better source
132 paths associated with them. (thanks to Tobias Rittweiler)
133 * optimization: faster local calls on x86/x86-64
134 * bug fix: some error messages for out-of-bound array indexes confused the
135 index and the bound. (thanks to Stas Boukarev)
136 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
138 * bug fix: running regressions tests in shells without OSTYPE set now works.
139 (reported by Harald Hanche-Olsen)
140 * bug fix: more robust static space exhaustion signalling from
141 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
142 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
143 docstring away instead of storing it under names such as (LAMBDA (X)).
144 (reported by Leslie Polzer)
145 * bug fix: timers could go off in the wrong order, be delayed indefinitely
146 (thanks to Ole Arndt for the patch)
147 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
148 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
149 potentially-invalid effective methods in its cache.
150 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
151 instances as well (thanks to Paul Khuong)
152 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
153 SB-POSIX:WAITPID and their C equivalents.
154 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
156 changes in sbcl-1.0.27 relative to 1.0.26:
157 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
158 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
159 * improvement: the system either recovers from stack exhaustion or dies
160 properly as opposed to leaving the user uncertain of whether the handler
161 trampled on some random memory next to the stack or having to rely on
162 --lose-on-corruption (which is still a good idea to use in production
163 because stack exhaustion can happen in signal handlers which will likely
165 * bug fix: fix gc related interrupt handling bug on ppc (regression from
166 1.0.25.37, reported by Harald Hanche-Olsen)
167 * bug fix: work around signal delivery bug in darwin (regression from
168 1.0.25.44, reported by Sidney Markowitz)
169 * bug fix: fix ERROR leaking memory (reported by David Thompson)
171 changes in sbcl-1.0.26 relative to 1.0.25:
172 * incompatible change: an interruption (be it a function passed to
173 INTERRUPT-THREAD or a timer function) runs in an environment where
174 interrupts can be enabled. The interruption can use
175 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
176 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
177 potentially running out of stack. Keep in mind that in the absence
178 of WITHOUT-INTERRUPTS some potentially blocking operation such as
179 acquiring a lock can enable interrupts.
180 * incompatible change: GC-OFF and GC-ON are removed, as they were
181 always unsafe. Use WITHOUT-GCING instead.
182 * new feature: runtime option --disable-ldb
183 * new feature: runtime option --lose-on-corruption to die at the
184 slightest hint of possibly non-recoverable errors: running out of
185 memory, stack, alien stack, binding stack, encountering a memory
186 fault, etc. In the absence of --lose-on-corruption a warning is
188 * enhancement: detect binding stack exhaustion
189 * enhancement: detect alien stack exhaustion on x86/x86-64
190 * improvement: generally more stable and reliable interrupt handling
191 * improvement: there is a per thread interruption queue,
192 interruptions are executed in order of arrival
193 * improvement: a repeating timer reschedules itself when the it has
194 finished, but expiration times are spaced equally. If an
195 expiration time is in the past it will trigger after a short grace
196 period that may give a chance to other things to run.
197 * optimization: slightly faster gc on multithreaded builds
198 * optimization: faster WITHOUT-GCING
199 * bug fix: when JOIN-THREAD signals an error, do it when not holding
200 important locks so that the debugger/handler doesn't produce
201 recursive errors or deadlock.
202 * bug fix: real-time signals are not used anymore, so no more
203 hanging when the system wide real-time signal queue gets full.
204 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
206 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
207 * bug fix: fix random memory faults related to interrupts on alpha
208 * bug fix: fix random memory faults related to interrupts on sparc
209 * bug fix: fix deadlocks related to starting threads
210 * bug fix: fix deadlines on locks on futex platforms
211 * bug fix: restore errno in signal handlers
212 * bug fix: fix deadlocks related to hash tables
213 * bug fix: fix deadlocks in pcl
215 changes in sbcl-1.0.25 relative to 1.0.24:
216 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
217 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
218 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
219 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
220 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
221 better name and does not return values so stale on multiprocessor systems.
222 Also, HOLDING-MUTEX-P was added for about the only sane usage of
224 * improvement: unithread builds keep track of MUTEX-VALUE.
225 * improvement: reading from a TWO-WAY-STREAM does not touch the output
226 stream anymore making it thread safe to have a concurrent reader and
227 a writer, for instance, in a pipe.
228 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
229 arguments, making compiler-macros for SETF-functions able to inspect
230 their constant arguments.
231 * improvement: COMPILE-FILE reports times with millisecond accuracy
232 (thanks to Luis Oliveira)
233 * optimization: CHAR-CODE type derivation has been improved, making
234 TYPEP elimination on subtypes of CHARACTER work better. (reported
235 by Tobias Rittweiler, patch by Paul Khuong)
236 * bug fix: setting alien structure fields of type struct by value now
237 computes the right offset for the memory copy.
238 * bug fix: compilation problem involving inlined calls to aliens with
239 result type VOID. (reported by Ken Olum)
240 * bug fix: #235a; sequential inline expasion in different policies no
241 longer reuses the functional from the previous expansion site.
242 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
243 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
244 * bug fix: named ENUMs in multiply-referenced alien record types no longer
245 cause an implied type redefinition. Regression from 1.0.21.29.
246 * bug fix: sign-extension of small signed return values now works with C
247 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
248 * improvements to the Windows port:
249 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
250 Westfold, thanks to Rudi Schlatte)
252 changes in sbcl-1.0.24 relative to 1.0.23:
253 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
254 vector of a multidimensional SIMPLE-ARRAY.
255 * new feature: the system now signals a continuable error if standard
256 readtable modification is attempted. (thanks to Tobias Rittweiler)
257 * new feature: DIRECTORY has been extended with a non-standard keyword
258 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
259 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
260 has been robustified and documented better. (thanks to Robert Goldman)
261 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
262 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
263 * tradeoff: constant FORMAT control strings are now compiled unless
264 SPACE > SPEED (previously only when SPEED > SPACE.)
265 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
267 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
269 * bug fix: lexical type declarations are now correctly reported by
270 SB-CLTL2. (reported by Larry D'Anna)
271 * bug fix: STRING-TO-OCTETS did not handle :START properly when
272 using UTF-8 as external format. (thanks to Luis Oliveira)
273 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
274 are signalled correctly. (thanks to Stas Boukarev)
275 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
276 designator. (thanks to Tobias Rittweiler)
277 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
278 designator, and returns T instead of the function. (thanks to
280 * bug fix: direct superclasses of STANDARD-CLASS and
281 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
282 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
283 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
284 when no class with the named slot yet exists no longer causes a
285 compile-time style-warning.
286 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
287 in safe code. (reported by Didier Verna)
288 * bug fix: #430; nested structure constructors can stack allocate.
289 * bug fix: on some 64-bit platforms dynamic space size was truncated
290 to #xffff0000 bytes. (reported by Benjamin Lambert)
291 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
292 REPL unusable. (reported by Daniel Herring)
293 * bug fix: return values of READ-SEQUENCE did not take :START into
294 account on file streams, regressions since 1.0.12.22. (reported by
295 Thomas Russ, patch by Paul Khuong)
296 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
297 method specializer used to confuse permuation vector optimization.
298 * bug fix: system inserted bogus implicit type declarations for local
299 special variables in DEFMETHOD bodies.
300 * bug fix: #354; duplicated frames in backtraces due to
301 non-tail-call-optimized XEPs to functions with return type NIL
303 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
304 initializes structure object slots according to DEFSTRUCT initforms,
305 and DEFSTRUCT forms :INCLUDEind structure classes defined using
306 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
307 (reported by Bruno Haible and Stephen Wilson)
308 * bug fix: #395; fill-pointer output streams used now support
309 element-type BASE-CHAR as well.
310 * bug fix: compiler error when attempting to derive return value of
311 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
313 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
315 * bug fix: Mac OS X binaries should now be portable between Leopard
318 changes in sbcl-1.0.23 relative to 1.0.22:
319 * enhancement: when disassembling method functions, disassembly
320 for the associated fast function is also produced.
321 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
323 * optimization: printing with *PRINT-PRETTY* true is now more
324 efficient as long as the object being printed doesn't require
325 special handling by the pretty printer.
326 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
327 now interact correctly with type declarations.
328 * partial bug fix: PCL detects infinite recursion during wrapper
329 validation. (thanks to Attila Lendvai)
330 * bug fix: #426; nested function calls are inlined properly.
331 Previously if FOO was an inline function, in calls of the form
332 (FOO (FOO ...)) the outer call was not inlined.
333 * bug fix: long long arguments passed in registers to alien
334 functions on PowerPC Linux and NetBSD are now handled correctly
335 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
337 changes in sbcl-1.0.22 relative to 1.0.21:
338 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
339 for the shared object in the current directory, but passes the native
340 namestring of the designated pathname to the operation system's shared
341 object loading function as-it.
342 * minor incompatible change: --disable-debugger toplevel option now takes
343 effect before processing of initialization files and --eval or --load
345 * new feature: new commandline argument: --script, which supports
346 shebang lines. See documentation for details. (based on work by
348 * new feature: SAVE-LISP-AND-DIE can save current values of
349 --dynamic-space-size and --control-stack-size in the executable core,
350 causing it to skip normal runtime option processing. See documentation
351 for details. (thanks to Zach Beane)
352 * enhancement: inoccous calls to EVAL or generic functions dispatching
353 on subclasses of eg. STREAM no longer cause compiler notes to appear.
354 * enhancement: the system no longer resignals errors from --load and
355 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
356 associated with the original error to be lost. (thanks to Ariel
358 * enhancement: :DONT-SAVE keyword argument has been added to
359 LOAD-SHARED-OBJECT for controlling interaction with
360 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
361 the effects of an earlier LOAD-SHARED-OBJECT call.
362 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
363 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
364 provided. (reported by Cedric St-Jean)
365 * bug fix: circularity handling in the reader did not treat raw
366 structure slots correctly. (reported by Cedric St-Jean)
367 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
368 file descriptors when there were none.
369 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
370 was broken. (reporteed by Willem Broekema)
371 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
372 pathnames without a directory.
373 * bug fix: COMPILE-FILE did not warn about undefined variable
374 references at toplevel, and LOAD of the resulting fasl did
376 * bug fix: functions with non-required arguments used to end up with
377 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
378 * bug fix: redefining a function with non-required arguments didn't
379 update the system's knowledge about its call signature properly.
380 * bug fix: fixed #431; incompatible alien record type redefinitions
381 are detected and handled. (reported by Neil Haven)
382 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
383 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
385 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
386 after alien stack frames.
387 * bug fix: strings passed to mk{s,d}temp lacked null termination
389 changes in sbcl-1.0.21 relative to 1.0.20:
390 * new feature: the compiler is able to track the effective type of a
391 generic function across method addition and removal.
392 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
393 appropriately typed structure slots without locking.
394 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
395 information like those gathered by TIME using a programming-friendly
397 * new feature: TIME reports time taken even if the form performs a
398 non-local transfer of control.
399 * enhancement: reduced conservativism on GENCGC platforms: on
400 average 45% less pages pinned (measured from SBCL self build).
401 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
402 mutate constant symbols or violate declaimed type of the symbol.
403 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
404 sleeping on the semaphore in heavily contested semaphores.
405 * bug fix: semaphores and condition variables were not interrupt
407 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
408 owned by other threads anymore.
409 * bug fix: FIND on lists called KEY outside the specified
410 subsequence. (reported by budden)
411 * bug fix: LOG doesn't use single-float intermediate results when
412 given mixed integer and double-float arguments, leading to better
413 precision. (reported by Bob Felts)
414 * bug fix: LOG with base zero returned values of inconsistent type.
416 changes in sbcl-1.0.20 relative to 1.0.19:
417 * minor incompatible change: OPTIMIZE qualities
418 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
419 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
420 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
421 * documentation: some slot access efficiency guidelines have been
422 added to the user manual.
423 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
424 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
425 as ASSOC and MEMEBER.
426 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
427 to more efficient EQ-comparison versions more often.
428 * optimization: enhanced derivation of DOLIST iteration variable type
430 * optimization: constant folding of simple (LIST ...) forms as DOLIST
432 * optimization: runtime lookup of function definitions can be
433 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
434 * optimization: compiler is able to derive the return type of
435 (AREF (THE STRING X) Y) as being CHARACTER.
436 * optimization: CLRHASH on empty hash-tables no longer does pointless
437 work. (thanks to Alec Berryman)
438 * optimization: REPLACE deftransforms don't punt when :START1 or
440 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
441 no longer emits a code deletion note. (reported by Andrew
443 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
444 functions with an odd number of &OPTIONAL arguments, a &REST
445 argument, and one or more &KEY arguments at the call site.
446 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
447 arguments appeared at call sites as well.
448 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
449 READ-LINE &co can no longer read from them afterwards. (reported
451 * bug fix: fixed #427: unused local aliens no longer cause compiler
452 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
454 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
455 alien-stack leakage. (reported by Andy Hefner)
456 * bug fix: PROGV signals an error when an attempt to violate declared
457 type of a variable or bind a constant is made.
458 * bug fix: SET signals an error when an attempt to violate declared
459 type of a variable is made.
460 * bug fix: restart computation during the execution of a restart
461 test function no longer causes infinite recursion. (reported by
463 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
464 signals an error. (thanks to Pierre Mai)
465 * bug fix: EXPORT left symbol unexported in conflict situations.
466 (thanks to Michael Weber)
467 * bug fix: correctly handle name conflicts involving CL:NIL.
468 (thanks to Michael Weber)
469 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
470 conflicts arising from USEing package with conflicting symbols
471 correctly. (thanks to Michael Weber)
473 changes in sbcl-1.0.19 relative to 1.0.18:
474 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
475 warnings that go otherwise unhandled will be muffled if they are
476 of the type that's the value of this variable.
477 * optimization: stack allocation is slightly more efficient on x86
479 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
480 where a raw slot always is initialized using the initform whose
481 type is not know sufficiently well a compile-time are now compiled
482 correctly. (reported by John Morrison)
483 * bug fix: compiler no longer makes erronous assumptions in the
484 presence of non-foldable SATISFIES types.
485 * bug fix: stack analysis missed cleanups of dynamic-extent
486 arguments in non-let-converted calls to local functions.
487 * improvements to the Windows port:
488 ** adjusted address spaces for building on both Win32 and
489 Win64. (thanks for John Connors)
490 * fixed some bugs revealed by Paul Dietz' test suite:
491 ** interval arithmetic during type derivation used inexact integer
492 to single-float coercions.
493 ** arithmetic operations involving large integers and single
494 floats give the same results in compiled and interpreted code.
495 ** deriving the result type of COERCE no longer signals an error
496 if the derived type of the second argument is a MEMBER type
497 containing invalid type specifiers.
498 ** ADJOIN with constant NIL as second argument works correctly.
499 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
501 changes in sbcl-1.0.18 relative to 1.0.17:
502 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
503 profiles only the current thread.
504 * minor incompatible change: changes to SYMBOL-VALUE of constants
505 defined with DEFCONSTANT now signal an error.
506 * enhancement: SB-SPROF now has support for wallclock profiling,
507 and is also able to profile specific threads. REPORT output
508 has also additional sorting options.
509 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
511 * optimization: structure allocation has been improved
512 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
513 ** out of line constructors are ~10% faster.
514 ** inline constructors are ~15% faster.
515 ** inline constructors are capable of dynamic extent allocation
516 (generally on x86 and x86-64, in some cases on other platforms
518 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
520 * optimization: file compiler is now able to coalesce non-circular
521 lists, non-base strings, and bit-vectors. Additionally, constants
522 are never referenced through SYMBOL-VALUE at runtime.
523 * optimization: code defining methods on PRINT-OBJECT (and other
524 generic functions in the COMMON-LISP package) now loads faster.
525 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
527 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
528 fasl is now deleted. (reported by Attila Lendvai)
529 * bug fix: READ-LINE always returned NIL for the last line in files.
530 (reported by Yoshinori Tahara)
531 * bug fix: more accurate disassembly annotations of foreign function
532 calls. (thanks to Andy Hefner)
533 * bug fix: trimming non-simple strings and non-string string
534 designators when the there is nothing to trim works properly.
535 (thanks to James Knight)
536 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
537 (thanks to Travis Cross)
538 * fixed some bugs revealed by Paul Dietz' test suite:
539 ** NIL is a valid function name (regression at 1.0.13.38)
540 ** FILL on lists was missing its return value (regression at 1.0.12.27)
541 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
542 fill pointers properly (regression at 1.0.12.23)
543 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
544 displacement indices properly (regression at 1.0.12.23)
546 changes in sbcl-1.0.17 relative to 1.0.16:
547 * temporary regression: user code can no longer allocate closure
548 variable storage on stack, due to bug 419 without explicitly
549 requesting it. Please consult sbcl-devel for advice if you need to
550 use this feature in the meanwhile.
551 * new feature: runtime argument --control-stack-size can be used to
552 adjust thread default control stack size.
553 * enhancement: improved TIME output
554 ** all times are reported using the measured accuracy (milliseconds
555 for real and GC times, microseconds for everything else.)
556 ** processor cycle counts on x86 and x86-64.
557 ** interpreted forms are counted for both evaluator modes.
558 ** number of lambdas converted by the compiler is reported.
559 ** CPU percentage report (computed from real and total run time.)
560 ** more comprehensive run time reporting, using a condenced format
561 ** interperted form, lambda, and page fault counts are omitted
563 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
565 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
566 * optimization: two argument forms of LAST are upto ~10% faster
567 in normal SPEED policies.
568 * optimization: NCONC no longer needs to heap cons its &REST list
569 in normal SPEED policies.
570 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
572 * bug fix: UNION and NUNION work with :TEST-NOT once more,
573 regression since 1.0.9.1. (thanks to Eric Marsden)
574 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
575 since 1.0.15.36. (thanks to Paul Khuong)
576 * bug fix: LAST when always returned the whole list when given a bignum
577 as the second argument.
578 * bug fix: dynamic extent allocation of nested lists and vectors
579 could leak to otherwise accessible parts.
580 * bug fix: invalid optimization of heap-allocated alien variable
582 * bug fix: fasl header checking is less vulnerable to different
583 platform word lengths.
584 * bug fix: more correct assembler syntax for GNU binutils
585 2.18.50.0.4 support. (thanks to Marijn Schouten)
586 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
588 * bug fix: the fopcompiler can handle LOCALLY forms (with no
589 declarations) successfully. (reported by Attila Lendvai)
591 changes in sbcl-1.0.16 relative to 1.0.15:
592 * minor incompatible change: revert the changes to sb-posix's error
593 signaling added in 1.0.14.
594 * minor incompatible change: change PROBE-FILE back to returning
595 NIL whenever we can't get a truename, as was the case before 1.0.14.
596 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
597 inherits from ERROR instead of just CONDITION.
598 * new feature: SB-INTROSPECT can provide source locations for instances
599 as well. (thanks to Tobias Rittweiler)
600 * optimization: binding special variables now generates smaller code
601 on threaded platforms.
602 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
603 and cases where no :TEST is given but the compiler can infer that
604 the element to search is of type (OR FIXNUM (NOT NUMBER)).
605 * optimization: better LOGNOT on fixnums.
606 * optimization: modular arithmetic for a particular requested width
607 is implemented using a tagged representation unless a better
608 representation is available.
609 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
610 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
611 for wellformedness and returns a specialized vector. (reported by
612 Francois-Rene Rideau)
613 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
614 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
615 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
616 unscheduling timer at the same time as another timer fires.
617 * bug fix: don't reschedule timers for dead threads.
618 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
619 * bug fix: copying output from RUN-PROGRAM to a stream signalled
620 bogus errors if select() was interrupted.
621 * enhancement: add support for fcntl's struct flock to SB-POSIX.
623 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
624 * enhancement: cleaner backtraces for interactive interrupts, as
625 well as other cases where the interesting frames used to be
626 obscured by interrupt handling frames.
627 * enhancement: untracing a whole package using (UNTRACE "FOO") is
628 now supported, and tracing a whole package using (TRACE "FOO") now
629 traces SETF-functions as well.
630 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
631 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
632 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
633 * unreadably printed representation of hash-tables now includes
635 * bug fix: partially fixed #188: type propagation from assignments
636 is now more efficient.
637 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
638 'DOUBLE-FLOAT) are not flushable.
639 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
640 full address of the object, and none of the tag bits.
641 * bug fix: readably printing hash-tables now respects other printer
642 control variables. (reported by Cedric St-Jean)
643 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
644 keyword with MAKE-HASH-TABLE.
645 * bug fix: export SB-POSIX:MKSTEMP.
646 * bug fix: SORT was not interrupt safe.
647 * bug fix: XREF accounts for the last node of each basic-block as
649 * bug fix: MAKE-INSTANCE optimizations interacted badly with
650 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
651 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
652 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
653 create obsolete instances in the case of redefinition or
654 obsoletion of a superclass. (thanks to Andy Hefner)
655 * bug fix: Support for the Alpha architecture has been revived; it had
656 suffered somewhat from lack of maintenance since sbcl-1.0.
657 * improvements to the Windows port:
658 ** The system detects the codepage to use at startup, instead of
659 using the value from the saved core. (thanks to Kei Suzuki)
661 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
662 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
663 (see documentation for details.)
664 * revived support for OpenBSD (contributed by Josh Elsasser)
665 * partially fixed bug #108: ROOM no longer suffers from occasional
666 (AVER (SAP= CURRENT END)) failures.
667 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
668 bodies no longer cause a WARNING to be signalled. (reported by
670 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
671 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
672 the bug in TRUNCATE.) (reported by Michael Weber)
673 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
674 no samples. (reported by Andy Hefner)
675 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
676 no longer appear as (NIL ...) frames in backtraces.
677 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
678 is now actually exported from SB-EXT as documented. (reported by
680 * bug fix: sb-aclrepl now correctly understands how to inspect
681 single-floats on 64-bit platforms where single-floats are not boxed.
682 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
683 yet been finalized. (reported by Levente Meszaros)
684 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
685 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
686 SBCL-specific optimize qualities.
688 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
689 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
690 an executable in the search path, and does so in the child
691 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
692 been removed; it can be found in the CVS history, for somebody who
693 needs that search behavior (see the manual).
694 * minor incompatible change: compiler policy re. weakening type
695 checks has changed: now type checks are weakened only if SAFETY < 2
697 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
698 unparsing of directory pathnames as files. Analogously,
699 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
700 filename to parse into a directory pathname.
701 * enhancement: implicit generic function creation now signals a
702 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
703 users can bind handlers for and muffle around calls to LOAD.
704 * enhancement: RUN-PROGRAM allows unicode arguments and environments
705 to be used (using the default stream external format), and allows
706 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
707 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
708 strings and vectors whose element-type or simplicity is not fully
709 known at compile-time.
710 * optimization: STRING-TRIM and related functions no longer allocate
711 a new string when no trimming needs to be performed. These functions
712 are also faster than before when the input string has been declared
714 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
715 * optimization: READ-LINE is significantly faster for files containing
717 * optimization: non-open coded uses of character comparison operators
718 (e.g. char=) no longer cons when called with more than one parameter
719 on platforms supporting dynamic-extent allocation.
720 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
721 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
722 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
724 * bug fix: some sequence functions elided bounds checking when
726 * bug fix: too liberal weakening of union-type checks when SPEED >
728 * bug fix: more bogus fixnum declarations in ROOM implementation
731 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
732 * new feature: MAKE-HASH-TABLE now experimentally accepts a
733 :SYNCHRONIZED argument, which makes the hash-table safe for
734 concurrent accesses (but not iteration.) See also:
735 SB-EXT:WITH-LOCKED-HASH-TABLE, and
736 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
737 * optimization: CONCATENATE on strings is an order of magnitude faster
738 in code compiled with (> SPEED SPACE).
739 * optimization: SUBSEQ is ~50% faster on lists.
740 * bug fix: bug 417 fixed -- source location reporting is now more robust.
741 * bug fix: SUBSEQ on a list will now correctly signal an error if if
742 END is smaller then START.
743 * bug fix: SB-PROFILE will no longer report extra consing for nested
744 calls to profiled functions.
745 * bug fix: ROOM implementation had bogus fixnum declarations which
746 could cause type-errors when calling ROOM on large images.
747 * bug fix: if file compilation is aborted, the partial fasl is now
748 deleted, and COMPILE-FILE returns NIL as the primary value.
749 * bug fix: number of thread safety issues relating to SBCL's internal
750 hash-table usage have been fixed.
751 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
752 be returned from its body when the values were being returned
753 using unknown-values return convection and the W-P-O was wrapped
754 inside an UNWIND-PROTECT.
755 * bug fix: sb-posix should now compile again under Windows, enabling
758 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
759 * incompatible change: hash-table accessor functions are no longer
760 automatically protected by locks. Concurrent accesses on the same hash-table
761 from multiple threads can give inconsistent results or even corrupt the
762 hash-table completely. Multi-threaded applications should do their own
763 locking at the correct granularity. In the current implementation it is
764 still safe to have multiple readers access the same table, but it's not
765 guaranteed that this property will be maintained in future releases.
766 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
767 and will signal an error at runtime.
768 * enhancement: SB-THREAD package now exports a semaphore interface.
769 * enhancement: CONS can now stack-allocate on x86 and
770 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
772 * enhancement: nested lists can now be stack allocated on
773 platforms providing stack allocation support.
774 * enhancement: dynamic-extent support has been extended to support
775 cases where there are multiple possible sources for the stack
777 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
778 if the mutex is uncontested on Linux.
779 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
780 as specified by the CLHS. (thanks to Tobias Rittweiler)
781 * bug fix: NaN comparison now works on x86-64.
782 * bug fix: CLOSE :ABORT T on a stream with pending output now
784 * bug fix: instances of non-standard metaclasses using standard
785 instance structure protocol sometimes missed the slot type checks
787 * bug fix: known functions can be inlined in high-debug code.
789 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
790 * minor incompatible change: the MSI installer on Windows no longer
791 associates .lisp and .fasl files with the installed SBCL.
792 * minor incompatible change: :UNIX is no longer present in *FEATURES*
793 on Windows. (thanks to Luis Oliviera)
794 * new feature: SB-CLTL2 contrib module now implements
795 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
796 * optimization: scavenging weak pointers is now more efficient,
797 requiring O(1) instead of O(N) per weak pointer to identify
798 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
799 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
800 method bodies using constant slot-names when the first argument is
801 a specializer parameter for the method.
802 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
803 names, when the class of the instance is a direct instance
804 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
805 as slow as the constant slot-name case.)
806 * optimization: member type construction is now O(N) instead
808 * optimization: UNION and NUNION are now O(N+M) for large
809 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
811 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
812 now more readable in environments like Slime which display it.
813 (thanks to Tobias C. Rittweiler)
814 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
815 was able to infer the correct argument type for the object on which
816 the CAS operation was being performed.
817 * bug fix: copy propagation interfered with parallel assignment
818 semantics in local calls. (reported by Paul Khuong)
819 * bug fix: the signed modular fixnum shift compiled to wrong code on
820 x86 and x86-64. (spotted by a slight modification to some of
823 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
824 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
825 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
826 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
828 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
829 and generic function now print the object identity for anonymous
830 instances. (thanks to Attila Lendvai)
831 * enhancement: as an extension to MOP, SBCL now supports SETF of
832 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
833 (thanks to Attila Lendvai)
834 * enhancement: sb-cover has an alternate annotation mode which puts
835 the form annotations at the car of the form, instead of annotating
836 it completely. The benefit of this mode is that it shows better
837 which forms were instrumented by the compiler.
838 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
839 by printer control variables. (reported by Dan Corkill)
840 * bug fix: system leaked memory when delayed output was performed by
841 the OS in smaller chunks then expected. (thanks to David Smith)
842 * bug fix: system leaked memory when file streams were not closed
844 * bug fix: large objects written to slow streams that were modified
845 after the write could end up with the modified state written to
846 the underlying file descriptor.
847 * bug fix: multiple threads operating in parallel on the same stream
848 could cause buffer-overflows.
849 * bug fix: source location information is stored correctly
850 (broken since 1.0.6). This bug would generally show up as the
851 Slime debugger highlighting the wrong form when the sldb-show-source
853 * bug fix: Branch forms are again annotated as branches in the sb-cover
855 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
856 on x86-64. (reported by Gregory Vanuxem)
857 * bug fix: EQUALP could return wrong results for structures with raw
858 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
859 word). (reported by Vjacheslav Fyodorov)
860 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
863 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
864 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
865 atomic compare-and-swap operations on threaded platforms.
866 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
867 allows assigning a global minimum value to optimization qualities
868 (overriding proclamations and declarations).
869 * enhancement: closed over variables can be stack-allocated on x86
871 * performance bug fix: GETHASH and (SETF GETHASH) are once again
873 * optimization: slot definition lookup is now O(1). This speeds up
874 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
875 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
876 * optimization: ASSOC and MEMBER can now be open-coded for all
877 combinations of keyword arguments when second argument is constant
878 and SPEED >= SPACE. In other cases a specialized version is
880 * bug fix: using obsoleted structure instances with TYPEP and
881 generic functions now signals a sensible error.
882 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
883 (reported by Kristoffer Kvello)
884 * bug fix: backtrace construction is now more careful when making
885 lisp-objects from pointers on the stack, to avoid creating bogus
886 objects that can be seen by the GC.
887 * bug fix: defaulting of values in contexts expecting more than 7
888 variables now works on x86-64. (reported by Christopher Laux)
889 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
891 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
892 as the property-list of a symbol.
893 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
894 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
895 situations requested, are once again file-compileable. (reported
898 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
899 * MOP improvement: support for user-defined subclasses of
900 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
901 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
902 the expansion of DEFMETHOD, is responsible for generating a form
903 which creates a list of specializers when evaluated. Additional
904 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
905 debugging and introspective support.
906 * minor incompatible change: the (unsupported) spinlock interface
907 has changed: free spinlock now has the value NIL, and a held spinlock
908 has the owning thread as its value.
909 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
910 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
912 * enhancement: name of a socket-stream is now "a socket" instead of
914 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
915 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
916 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
917 for generic functions. (Thanks to Tobias C. Rittweiler)
918 * optimization: bignum printing speed has been improved by 20-40%
919 (depending on the bignum size.)
920 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
922 * bug fix: the cache used by the CLOS to store precomputed effective
923 methods, slot offsets, and constant return values is now thread and
925 * bug fix: generic function dispatch function updating is now thread
926 and interrupt safe (in the sense that the known issues have been
928 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
929 * bug fix: interning EQL-specializers is now thread and interrupt safe.
930 * bug fix: asdf systems with dependencies to the SB-POSIX or
931 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
932 * bug fix: interrupt safety of applicable method computation has been
935 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
936 * new contrib: sb-cover, an experimental code coverage tool, is included
938 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
939 significantly faster.
940 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
941 produce more efficient code on x86-64 if the compiler can determine
942 that (+ INDEX <constant>) does not require a bounds check and FOO
943 has an element type at least 8 bits wide.
944 * enhancement: a new, experimental synchronous timeout facility is
945 provided. Refer to SB-SYS:WITH-DEADLINE for details.
946 * enhancement: when a symbol name conflict error arises, the
947 conflicting symbols are always printed with a package prefix.
948 (thanks to Kevin Reid)
949 * enhancement: stepping is now once again supported on the SPARC and
950 MIPS platforms. (It is also now more likely to work on CheneyGC
952 * enhancement: sb-sprof can now also track and report accurate call
954 * bug fixes: the treatment of non-standard subclasses of
955 SB-MOP:SPECIALIZER is more correct.
956 * incompatible change: PURIFY no longer copies the data from the
957 dynamic space into the static and read-only spaces on platforms
958 that use the generational garbage collector
959 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
961 * bug fix: GC race condition occasionally resulting in crashes with
962 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
964 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
966 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
967 a STYLE-WARNING to be signalled (regression from 1.0.4.)
968 * bug fix: an asynchronous interrupt could previously leave the
969 system running with GC inhibited.
970 * bug fix: a DECLARE form evaluated at top-level now causes an error
971 rather than silently (or verbosely) returning NIL.
972 * bug fix: trying to dissassemble functions compiled at high DEBUG could
973 result in a error being signalled due to source form lookup errors.
974 (reported by Peter Graves)
976 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
977 * incompatible change: removed writer methods for host-ent-name,
978 host-ent-addresses -- changing the values did not update the DNS
980 * minor incompatible change: changed experimental JOIN-THREAD interface
981 * documentation: the manual now lists reader and writer methods
982 in class slot documentation sections. (thanks to Richard M Kreuter)
983 * documentation: unwinding from asyncronous events has been
984 documented as unsafe.
985 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
986 in multithreaded application code.
987 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
988 platforms. (thanks to James Anderson for the optimization hint)
989 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
991 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
992 variants no longer cons.
993 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
994 their NOT- variants no longer cons.
995 * optimization: EQUAL hash tables no longer use SXHASH for objects
996 of all data types, but instead use an EQL hash for types for which
997 EQUAL is the same as EQL.
998 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
999 are significantly faster.
1000 * optimization: new STRING-OUTPUT-STREAM implementation is much
1001 faster for large outputs and conses 30% less on average.
1002 * enhancement: XREF information is now collected for references made
1003 to global variables using SYMBOL-VALUE and a constant argument.
1004 * enhancement: SIGINT now causes a specific condition
1005 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1006 * bug fix: FILE-POSITION used to signal an error in some cases where
1007 ANSI requires it to return NIL.
1008 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1009 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1010 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1012 * bug fix: bad type declaration in the CLOS implementation has
1013 been fixed. (reported by James Anderson)
1014 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1015 (thanks to Lutz Euler)
1016 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1017 required by the CLHS. (reported by Samium Gromoff)
1018 * bug fix: dead unbound variable references now signal an error.
1019 (reported by Marco Monteiro)
1020 * bug fix: / with an unused value was being deleted in safe code.
1021 (thanks to Marco Monteiro and Kevin Reid)
1022 * bug fix: number of characters that can be written onto a single
1023 line in a file is unlimited.
1024 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1025 been fixed by inhibiting interrupts for when GC is disabled.
1026 * bug fix: some interrupt safety issues with GETHASH, (SETF
1027 GETHASH), CLRHASH and REMHASH have been fixed.
1028 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1029 specifier no longer causes infinite recursion.
1030 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1031 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1032 * bug fix: an &environment argument with the correct variable information
1033 is passed to macros that are expanded during byte compilation.
1034 (reported by Samium Gromoff)
1035 * bug fix: a logic error was causing the hash function for bignums to
1036 have excessive amounts of collisions. (reported by Faré Rideau)
1037 * bug fix: modifying the contents of an array could change the return
1038 value of SXHASH on that array, which is only allowed for strings
1039 and bit vectors. (bug introduced in 0.9.16)
1040 * improvement: the x86-64/darwin port now passes all tests (except
1041 for the debugger tests) but should still be considered
1042 experimental until this is fixed.
1043 * improvement: a style-warning is signaled for CASE (etc) clauses with
1044 duplicate keys. (thanks to Kevin Reid)
1045 * improvement: macos/x86 and macos/x86-64 now use mach exception
1046 handlers for dealing with illegal instructions (for trapping and
1047 error handling) and memory protection violations (for GC).
1049 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1050 * new platform: experimental support for x86-64/darwin (MacOS).
1051 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1052 and getnameinfo sockets functions are used instead of gethostbyaddr
1053 and gethostbyname, on platforms where the newer functions are available.
1054 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1056 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1057 don't print the startup banner, but behave as if --noinform was passed
1058 as a command line argument. (thanks to Kevin Reid)
1059 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1060 * optimization: code using alien values with undeclared types is much faster.
1061 * optimization: the compiler is now able to open code SEARCH in more cases.
1062 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1063 * bug fix: using standardized COMMON-LISP special variables as loop
1064 variables no longer signals bogus package lock violations. (reported
1066 * bug fix: declaring local loop variables to be of a range-limited type
1067 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1068 (reported by Andras Simon)
1069 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1070 bugs remain on x86-64.)
1071 * bug fix: the #= and ## reader macros now interact reasonably with
1072 funcallable instances.
1073 * bug fix: type-checks for function arguments were compiled using the
1074 compiler policy settings of the wrong lexical environment (in 1.0.2
1076 * bug fix: SHADOW accepts characters as string designators, as required
1077 by the spec (thanks to Eric Marsden)
1078 * bug fix: fixed GC safety issues when foreign functions are called with
1079 non-base strings as arguments
1080 * bug fix: more consistent error output for fatal-compiler-warnings, like
1082 * bug fix: functions with proper names were showing up as NIL in
1083 backtraces (reported by Edi Weitz, regression in 1.0.2)
1085 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1086 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1087 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1088 produce more efficient code on the x86 if the compiler can determine
1089 that (+ INDEX <constant>) does not require a bounds check and FOO
1090 has an element type at least 8 bits wide.
1091 * bug fix: references to undefined variables are handled the same way
1092 in toplevel forms as in the normal compiler
1093 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1095 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1096 (thanks to Jon Buller)
1097 * improvement: faster compilation times for complex functions
1098 * improvement: added readlink support to SB-POSIX (thanks to Richard
1101 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1102 * improvement: experimental support for mach exception handling on
1103 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1105 * improvement: support for GBK external format.
1106 (thanks to Chun Tian (binghe))
1107 * improvement: the debugger now displays variables that have been closed
1108 over, in code compiled with (DEBUG 2) or higher
1109 * improvement: support for executable cores on NetBSD (thanks to
1111 * new feature: added a RESTART-FRAME debugger command
1112 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1113 be used to provide an implementation for FILE-POSITION on Gray streams
1114 (thanks to Eric Marsden)
1115 * new feature: add syslog, openlog and closelog support to SB-POSIX
1116 (thanks to Richard Kreuter)
1117 * optimization: the function call overhead in code compiled with
1118 a high DEBUG optimization setting is significantly
1119 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1120 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1121 (thanks to Tony Martinez)
1122 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1123 evaluated once (reported by Kevin Reid)
1124 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1125 works again (thanks to Kilian Sprotte)
1126 * bug fix: an error is signaled for tagbodies with duplicate tags
1127 (thanks to Stephen Wilson)
1128 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1129 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1130 stack frames from alien callbacks.
1131 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1132 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1133 65k pages (thanks to David Woodhouse)
1134 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1136 changes in sbcl-1.0.1 relative to sbcl-1.0:
1137 * new platform: FreeBSD/x86-64, including support for threading.
1138 * new feature: the compiler stores cross-referencing information
1139 about function calls (who-calls), macroexpansion (who-macroexpands)
1140 and special variables (who-binds, who-sets, who-references) for code
1141 compiled with (< SPACE 3). This information is available through the
1142 sb-introspect contrib.
1143 * new feature: users may subclass SEQUENCE, and have instances of
1144 these classes interoperate with standard Common Lisp functions if
1145 a number of methods are defined. (This feature is experimental
1146 and the interface subject to change based on feedback from SBCL
1147 users and the general community)
1148 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1149 x86/x86-64, rather than the previous fixed depth of 8
1150 * improvement: another pthread back-end of mutex "pthread-futex".
1151 * bug fix: non-ascii command-line arguments are processed correctly
1152 (thanks to Yaroslav Kavenchuk)
1153 * bug fix: non-required arguments were not passed correctly when a method
1154 defined using DEFMETHOD was called from a mop-generated method using
1155 CALL-NEXT-METHOD (reported by Pascal Costanza)
1156 * bug fix: recursion is now permitted in accessors through
1157 SLOT-UNBOUND. (reported by Pascal Costanza)
1158 * bug fix: an error was signaled at startup if the HOME environment
1159 variable was defined, but had an empty value (reported by Peter Van Eynde)
1160 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1161 signal a PROGRAM-ERROR, not a BUG.
1162 * bug fix: SB-POSIX:READDIR works when built with large file support.
1163 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1165 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1166 for better automatic indentation support. (thanks to Matt Pillsbury)
1167 * optimization: loading generic functions no longer takes O(n^2) time,
1168 proportional to the amount of methods in the generic function
1169 (reported by Todd Sabin and Jeremy Brown)
1170 * optimization: the FIND and POSITION family of sequence functions
1171 are significantly faster on arrays whose element types have been
1173 * improvements to the Windows port:
1174 ** Intermittent heap corruption problems have been fixed. (thanks
1175 to Alastair Bridgewater)
1176 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1178 ** Lisp is able to unwind foreign exception frames from alien
1179 callbacks. (thanks to Alastair Bridgewater)
1181 changes in sbcl-1.0 relative to sbcl-0.9.18:
1182 * improvement: experimental support for threading on FreeBSD/x86.
1183 (thanks to NIIMI Satoshi)
1184 * improvement: runtime option --dynamic-space-size can be used
1185 to set the size of the dynamic space reserved on startup.
1186 * improvement: floating point modes in effect are now saved in
1187 core, and restored on startup.
1188 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1189 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1190 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1191 threads are not running after *SAVE-HOOKS* have run.
1192 * improvement: writes to CLOS instance slots are type-checked in code
1193 compiled with (SAFETY 3)
1194 * improvement: floating-point exception handling on FreeBSD (thanks to
1196 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1197 (thanks to Zach Beane)
1198 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1200 * improvement: added support for the Shift-JIS external format.
1201 (contributed by NIIMI Satoshi)
1202 * improvement: callbacks are supported on Linux/PPC. (thanks to
1204 * bug fix: compiler bug triggered by a (non-standard) VALUES
1205 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1206 * bug fix: file compiler no longer confuses validated and already
1207 dumped structurres. (reported by Kaersten Poeck)
1208 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1209 fill-pointer signals a type-error as required. (thanks to
1211 * bug fix: disassemly of funcallable instances works.
1212 * bug fix: single stepping on PPC.
1213 * bug fix: fix thread-safety problems in the type system (generally
1214 manifesting as nonsensical errors like "STRING is a bad type specifier
1215 for sequences" or "The value 1 is not of type FIXNUM")
1216 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1217 (reported by Josip Gracin)
1218 * bug fix: an error is signaled for attempts to displace arrays with
1219 incompatible element types (thanks to Mario Mommer)
1220 * bug fix: more correct handling of wide characters in debug info
1221 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1222 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1223 and don't cause extra consing
1224 * optimization: MAP and MAP-INTO are significantly faster on vectors
1225 whose elements types have been declared.
1226 * Improvements to SB-SPROF:
1227 ** Support for allocation profiling
1228 ** Reduced profiling overhead, especially for long profiling runs
1229 * Improvements to the Windows port:
1230 ** floating point exceptions are now reported correctly.
1231 ** stack exhaustion detection works partially.
1232 ** more accurate GET-INTERNAL-REAL-TIME.
1233 ** better RUN-PROGRAM behaviour in case of errors in the child
1235 ** PROBE-FILE now simplifies pathnames correctly.
1236 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1237 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1238 1st 1970 (although time timezone data will be unreliable).
1239 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1241 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1242 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1243 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1245 * bug fix: two potential GC deadlocks affecting threaded builds.
1246 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1247 returns T (reported by Anton Kazennikov)
1248 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1249 with non-variable places
1250 * bug fix: remove a race condition in the setting of
1251 funcallable-instance functions, this should make threaded CLOS
1252 code more stable against memory faults.
1253 * bug fix: corruption of specials when unbinding is interrupted by an
1254 asynchronous unwind (reported by Hannu Koivisto)
1255 * improvement: the debugger will now also display local variables that
1256 are only used once, for code compiled with a DEBUG optimization quality
1259 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1260 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1261 * incompatible change: External-format support for FFI calls. The
1262 SB-ALIEN:C-STRING no longer implies an ASCII
1263 external-format. Instead the string is subject to external-format
1264 conversion. Additionally return values of type SB-ALIEN:C-STRING
1265 are by default of type (SIMPLE-ARRAY CHARACTER), not
1266 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1267 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1268 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1269 * incompatible change: SB-EXT package no longer contains the
1270 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1271 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1273 * incompatible change: the single-stepper is no longer available
1274 on Alpha, Mips and Sparc platforms.
1275 * minor incompatible change: the direct superclasses of
1276 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1277 not (STANDARD-OBJECT FUNCTION). This makes the
1278 class-precedence-lists of GENERIC-FUNCTION and
1279 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1281 * minor incompatible change: the default stream external format on
1282 non-unicode SBCL is no longer detected from the locale, but is always
1284 * new feature: Add a version of evaluator that uses an interpreter instead
1285 of the compiler. EVAL still uses the compiler by default, to switch it
1286 to use the interpreter, set the value of the variable
1287 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1288 * minor incompatible change: the single-stepper REPL has been merged
1289 with the normal debugger (see the "Stepping" heading of the debugger help
1290 for more details). The debugger command STEP will no longer switch
1291 to the single-stepper REPL.
1292 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1293 for a type now works.
1294 * bug fix: loading of default sysinit file works. (thanks to Leonid
1296 * bug fix: better detection of circularities in the file-compiler.
1297 (reported by Marco Monteiro)
1298 * bug fix: the CL pathname functions now work with files that have
1299 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1300 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1301 systems with Unix98 pty semantics.
1302 * bug fix: ASDF-INSTALL will now work with bsd tar.
1303 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1305 * bug fix: timers expiring in dead threads no longer cause a
1306 type-error (reported by Paul "Nonny Mouse").
1307 * bug fix: thanks to more lightweight single-stepper instrumentation,
1308 code compiled with (DEBUG 3) will compile and execute significantly faster,
1309 and will have more accurate type-inferencing than before
1310 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1311 whose bindings are modified
1312 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1313 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1314 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1315 CL:SOFTWARE-VERSION with proper version
1317 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1318 * feature: implemented the READER-METHOD-CLASS and
1319 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1320 as specified by AMOP.
1321 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1323 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1324 (thanks to Lutz Euler)
1325 * optimization: hashing of general arrays and vectors has been
1326 improved. (reported by Any Fingerhut)
1327 * enhancement: SB-INTROSPECT is now able to find definitions of
1328 profiled functions. (thanks to Troels Henriksen)
1329 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1330 as well, allowing compiler-macros for SETF-functions to expand.
1331 * enhancement: step-instrumentation no longer wraps known
1332 single-value functions with multiple-value context, allowing
1333 better type inference.
1334 * fixed bug #337: use of MAKE-METHOD in method combination now works
1335 even in the presence of user-defined method classes. (reported by
1336 Bruno Haible and Pascal Costanza)
1337 * fixed bug #339(c): if there are applicable methods not part of any
1338 long-form method-combination group, call INVALID-METHOD-ERROR.
1339 (reported by Bruno Haible)
1340 * fixed bug #361: the :FUNCTION initarg in the protocol for
1341 initialization of methods can now be used to override
1342 internally-produced optimized functions. (reported by Bruno
1344 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1345 system-provided lambda expression no longer cause warnings about
1346 unbound #:|pv-table| symbols.
1347 * bug fix: improved the handling of type declarations and the
1348 detection of violations for keyword arguments with non-constant
1350 * bug fix: potentially erronous calls to PATHNAME and
1351 MERGE-PATHNAMES were being flushed in some cases.
1352 (reported by Richard Kreuter)
1353 * bug fix: compiled calls to TYPEP were mishandling obsolete
1354 instances. (reported by James Bielman and Attila Lendvai)
1355 * bug fix: format strings with ~> without matching ~< no longer
1356 trigger an AVER, but signal an understandable error instead.
1357 (reported by Antonio Martinez)
1358 * bug fix: specifying an output-file without a pathname-type for
1359 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1360 of input-file instead of "fasl". (reported by Robert Dodier)
1361 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1362 (reported by James Y Knight).
1363 * bug fix: compiler-macros-function did not consider the environment
1364 argument for shadowing by local functions.
1365 * bug fix: compiler-macros expansion was inhibited by local INLINE
1367 * bug fix: inline expansions of known functions were subject to
1368 step-instrumentation in high debug policies, leading to problems
1369 with type-inference.
1370 * bug fix: compiler failed to differentiate between different CONS
1371 types in some cases.
1372 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1373 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1374 * bug fix: #368: incorrect use of expressed vs. upgraded array
1376 * bug fix: #306a: more precise unions of array types.
1377 * thread-safety improvements:
1378 ** CONDITION-WAIT could return early on Linux, if the thread was
1379 interrupted and subsequently continued with SIGCONT.
1380 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1382 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1383 * added support for the ucs-2 external format. (contributed by Ivan
1385 * minor incompatible change: pretty printing of objects of type
1386 (cons symbol) is, in the default pprint-dispatch-table, now
1387 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1389 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1390 called later in a class's lifetime, possibly as late as when the
1391 first instance of the class is created. Previously,
1392 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1393 class became finalizeable.
1394 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1395 for multibyte external-format streams. (thanks to "vbzoli")
1396 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1397 with :ALLOCATION :CLASS inherited from superclasses of the
1399 * fixed bug: anonymous classes can now be created using the :NAME
1400 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1401 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1402 * fixed bug: core-files saved with :EXECUTABLE T can again be
1403 executed when SBCL_HOME isn't set. (reported by James Knight)
1404 * fixed bug: toplevel LOCALLY forms with declarations could
1405 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1406 * fixed bug: printing from several different threads using different
1407 values of *print-case* could cause invalid output, due to
1408 some internal special variables of the printer not being bound
1409 thread-locally (reported by Max Mikhanosha)
1410 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1411 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1412 (reported by Pascal Costanza)
1413 * fixed bug: FINALIZE-INHERITANCE is called from
1414 REINITIALIZE-INSTANCE on classes when the class has previously
1415 been finalized, as required by AMOP.
1416 * minor code generation optimizations:
1417 ** better register allocation in CLOS dispatching functions
1418 ** overflow detection when coercing signed bytes to fixnums on x86-64
1419 ** is now implemented with one IMUL instruction instead of three shifts
1420 ** more efficient bit-vector access on x86 and x86-64
1421 ** more efficient access to raw structure slots on x86 and x86-64
1422 * fixed some bugs revealed by Paul Dietz' test suite:
1423 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1424 return its argument.
1426 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1427 * feature: thread support on Solaris/x86, and experimental thread support
1429 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1431 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1432 default method for SLOT-UNBOUND.
1433 * minor incompatible change: prevent the user from specializing the
1434 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1435 somewhat counter to the intent of the protocol, I (CSR) think, and
1436 additionally it just doesn't work in SBCL as currently
1437 implemented, thanks to optimizations (that are always valid for
1438 the other three SLOT-VALUEish functions, but not for the setter).
1439 * minor incompatible change: the :SB-LDB feature is now enabled by
1440 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1441 the low-level debugger.
1442 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1443 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1444 down to an SB-SYS:FD-STREAM, allowing direct communication in
1445 more cases. Temporary files and pipes are still used as a fallback
1447 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1448 on the non-reentrant C functions localtime(3) and gmtime(3).
1449 * bug fix: global optimization policy was not visible in LOCALLY and
1451 * bug fix: class objects can be used as specializers in methods.
1452 (reported by Pascal Costanza)
1453 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1454 with a type error. (reported by blitz_ on #lisp)
1455 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1456 failed with a type error. (reported by Pascal Bourguignon)
1457 * bug fix: merging pathnames against defaults with :DIRECTORY
1458 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1459 (reported by James Y Knight)
1460 * bug fix: saving large (>2GB) cores on x86-64 now works
1461 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1462 constant index and a (simple-array (signed-byte 32)) array
1463 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1464 error (patch by Robert J. Macomber)
1465 * feature: TIME now displays the amount of run-time spent in GC
1466 * bug fix: The debugger now does a better job of respecting
1467 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1468 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1469 workaround for bug 403.)
1470 * bug fix: floating point exception handling now works on FreeBSD
1471 (thanks to NIIMI Satoshi)
1472 * fixed some bugs revealed by Paul Dietz' test suite:
1473 ** MISC.641: LET-conversion were not supposed to work in late
1475 * improvements to the Win32/x86 port:
1476 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1477 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1479 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1480 * new feature: source path information is generated for macro-expansion
1481 errors for use in IDE's like Slime (thanks to Helmut Eller)
1482 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1483 * bug fix: compiler does not loop forever on an invalid type in
1485 * improvement: compilation of most CLOS applications is significantly
1487 * optimization: added a limited bytecode compiler for simple toplevel
1488 forms, speeding up compilation and FASL loading
1489 * bug fix: the statistical profiler now properly distinguishes anonymous
1492 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1493 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1494 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1495 into subclasses of the finalized class. Now user calls to
1496 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1497 system return before any subclasses are finalized.
1498 * minor incompatible change: The reader no longer ignores errors
1499 regarding non-existent packages in #+ and #- feature tests.
1500 * new feature: command line options --no-sysinit, --no-userinit to
1501 inhibit loading the corresponding init files
1502 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1503 for sending data through UDP sockets (thanks to François-René Rideau)
1504 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1505 error is signalled instead (thanks to François-René Rideau)
1506 * minor incompatible change: Error signalling behaviour of lexical
1507 operations violating package locks has changed slightly. Refer to
1508 documentation on package locks for details.
1509 * enhancement: EVAL can process IF-expressions without resorting to the
1511 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1512 constant-folded properly due to missing out-of-line functions.
1513 (reported by Mika Pihlajamäki)
1514 * bug fix: LISTEN sometimes returned T even in cases where no data was
1515 immediately available from the stream
1516 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1517 were reversed. (reported by Levente Mészáros)
1518 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1519 when given a vector displaced to an adjustable array. (reported
1521 * bug fix: derivation of float boundaries from numbers outside the
1522 appropriate float range (reported by John Wiseman)
1523 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1525 * bug fix: precomputing cache entries for generic functions with
1526 some subclasses of specializers as yet invalid does not attempt to
1527 fill a cache line with a negative offset. (reported by Levente
1529 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1530 allow condition class objects as arguments to DOCUMENTATION and
1531 (SETF DOCUMENTATION); only find and set documentation for
1532 structure names for the STRUCTURE doc-type. (suggested by Gary
1534 * improvements to the Win32/x86 port:
1535 ** (user-homedir-pathname) and default initialization file
1536 locations now know about the user's "Documents and Settings"
1537 directory (thanks to Yaroslav Kavenchuk)
1538 ** run-program is implemented (thanks to Mike Thomas)
1539 ** sockets support (thanks to Timothy Ritchey)
1540 ** better backtrace support (thanks to Alastair Bridgewater)
1541 ** sb-grovel supported
1542 ** asdf-install and sb-posix work somewhat
1543 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1544 * improvements to the Solaris/x86 port:
1545 ** works on Solaris 11/Solaris Express
1546 ** floating-point exception handling support
1547 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1548 * fixed some bugs revealed by Paul Dietz' test suite:
1549 ** REMOVE-METHOD returns its generic function argument even when
1550 the method is not one of the generic functions' methods.
1551 ** objects declared as MEMBER types can be admissible arguments to
1552 structure accessors.
1553 ** printing characters should simply be printed by the FORMAT ~:C
1555 ** compiler failure when compiling functions with hairy constant
1556 defaults for optional parameters.
1557 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1558 function, which is already optimized.
1560 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1561 * new platform: experimental support for SBCL x86/Darwin, including
1562 MacOS X 10.4.5 on Intel.
1563 * new feature: Unicode character names are now known to the system
1564 (through CHAR-NAME and NAME-CHAR).
1565 * new feature: the filesystem location of SBCL's core file is
1566 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1567 * minor incompatible change: the contrib modules SB-POSIX and
1568 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1569 this change is to make it easier to distribute
1570 location-independent binaries.
1571 * bug fix: as implied by AMOP, standardized classes no longer have
1572 slots named by external symbols of public packages. (reported by
1574 * optimization: calling functions via constant symbols -- as in
1575 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1576 via the function object as in (FUNCALL #'FOO).
1577 * optimization: on x86 and x86-64, the calling convention for the
1578 case of dealing with an unknown number of values has been altered
1579 to be friendlier to the prediction heuristics implemented,
1580 particularly with reference to CALL and RET pairing. (thanks to
1581 Alastair Bridgewater)
1582 * optimization: on x86, the code for access to thread-local symbol
1583 values and binding/unbinding of thread-local symbols is smaller.
1584 (thanks to Alastair Bridgewater)
1585 * enhancement: CONSTANTP is now able to determine constantness of
1586 more complex forms, including calls to constant-foldable standardized
1587 functions and some special forms beyond QUOTE.
1588 * fixed bug: occasional GC crashes on Solaris/x86
1589 * optimization: x86-64 supports stack allocation of results of simple
1590 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1591 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1592 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1593 (thanks to James Knight)
1594 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1595 by the standard (thanks to Stephen Compall)
1597 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1598 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1599 be used for bundling the runtime and the core file into one
1600 executable binary. This feature is not currently supported on all SBCL
1601 platforms. (thanks to James Bielman and NIIMI Satoshi)
1602 * new feature: a generational or ephemeral garbage collector is now
1603 the default on the PowerPC platform (both Linux and Darwin). The
1604 old Cheney (stop and copy) collector is a build-time option.
1605 (thanks to Cyrus Harmon, after Raymond Toy)
1606 * minor incompatible change: the method by which SBCL finds its
1607 contributed modules has changed; it no longer relies on symbolic
1608 links from an $SBCL_HOME/systems directory, but searches directly
1609 in the subdirectories of $SBCL_HOME.
1610 * enhancement: the dynamic heap size on the Linux/PPC platform is
1611 markedly larger, even using the older Cheney garbage collector.
1612 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1613 certain complicated string types. (reported by Gary King)
1614 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1615 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1616 * fixed bug: DOCUMENTATION on structures no longer signals an
1617 error if no structure type of the right name exists. (reported by
1619 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1620 applicable non-standard primary or :AROUND method on
1621 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1622 no longer cause unbound variable errors. (reported by Kevin Reid)
1623 * fixed bug: metacircle resolution in cases where methods have slots
1624 added before the slots from STANDARD-METHOD. (reported by Jean
1626 * fixed bug: the Power PC assembly code for calling into lisp
1627 sometimes computed its return address wrongly (depending on the
1628 15th bit of the address, fixed at link time). This used to
1629 manifest itself in a segmentation violation while building PCL.
1630 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1631 many others over the years)
1632 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1633 the stack pointer (treated as a signed integer) is negative.
1634 (thanks to Peter van Eynde)
1636 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1637 * new platform: experimental support for the Windows operating
1638 system has been added. (thanks to Alastair Bridgewater)
1639 * fixed several bugs in and robustified the PPC FFI (including
1640 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1641 * bug fix: allow non-simple string symbol names (reported by Paul
1643 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1645 * bug fix: saving a core corrupted callbacks on x86/x86-64
1646 * bug fix: closed a loophole in metacircularity detection and
1647 grounding in the PCL implementation of CLOS.
1648 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1649 (reported by tomppa on #lisp)
1650 * bug fix: clear the direction flag on Lisp -> C transitions, as
1651 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1652 (reported by Andrej Grozin and Hendrik Maryns)
1653 * optimization: major improvements to GC efficiency on GENCGC platforms
1654 * optimization: faster implementation of EQUAL
1655 * optimization: emit more efficient opcodes for some common
1656 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1657 * optimization: several other minor code-generation improvements on x86-64
1658 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1660 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1661 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1662 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1663 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1664 by ANSI as a generic function, and for consistency (SETF
1665 GENERIC-FUNCTION-NAME) is treated likewise.
1666 * fixed bug #233.b: make constraint propagation notice when a variable
1667 value is changed after it is referenced but before it is used
1668 * fixed bug #296: no more arbitrary behaviour from filenames with
1669 odd characters as --load arguments. (reported by Adam Warner)
1670 * fixed bug #390: :CHARACTER-SET pathname components now work as
1671 expected. (reported by Tim Daly Jr)
1672 * fixed bug #391: complicated :TYPE intersections in slot
1673 definitions no longer cause an error in PCL internals.
1674 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1675 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1676 returning the number of octets which would be written to the
1677 file-stream. (thanks to Robert J. Macomber)
1678 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1679 arguments to the internal stream functions. (thanks to David
1681 * bug fix: stack exhaustion is now handled on the x86/SunOS
1682 platform. (thanks to Daisuke Homma)
1683 * bug fix: more accurate ROOM results on GENCGC platforms
1684 * optimization: improved type inference for arithmetic-for
1685 index variables in LOOP
1686 * optimization: faster floating-point SQRT on x86-64
1687 * fixed some bugs revealed by Paul Dietz' test suite:
1688 ** DOCUMENTATION returns NIL instead of "" for method combinations
1689 that don't have a docstring
1691 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1692 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1693 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1694 therefore are not customizeable by user code (as seems to be at
1695 least permitted and maybe required by AMOP). As a consolation,
1696 however, the SBCL implementation of these functions now calls
1697 REINITIALIZE-INSTANCE as specified by AMOP.
1698 * bug fix: slot-definition documentation is propagated as per ANSI
1699 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1700 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1701 argument, as do eslotd initialization methods. (from Pascal
1702 Costanza's "Closer" project)
1703 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1704 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1706 * bug fix: it is now possible to have more than one subclass of
1707 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1708 (reported by Bruno Haible, Pascal Costanza and others)
1709 * bug fix: the dependent update protocol now works for generic
1710 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1711 and Pascal Costanza)
1712 * bug fix: condition-class instances corresponding to
1713 DEFINE-CONDITION forms are now created eagerly. (reported by
1714 Kalle Olavi Niemitalo on comp.lang.lisp)
1715 * bug fix: floating point printing is more accurate in some
1716 circumstances. (thanks to Simon Alexander)
1717 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1718 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1719 * bug fix: callbacks on OS X now preserve stack-alignment.
1720 (thanks to Cyrus Harmon)
1721 * enhancement: the x86-64 disassembler is much better at
1722 disassembling SSE instructions. (thanks to Lutz Euler)
1723 * enhancement: CHECK-TYPE on a variable now allows type-inference
1724 (thanks to Vincent Arkesteijn)
1725 * optimization: improved performance of EUC-JP external format.
1726 (thanks to NIIMI Satoshi)
1727 * optimization: performance improvements to IO on file streams of
1728 :ELEMENT-TYPE CHARACTER
1729 * optimization: much faster memory allocation on x86-64
1730 * optimization: faster garbage collections (latency and throughput)
1732 * optimization: faster bignum subtraction and division on x86 and x86-64
1733 (thanks to Lutz Euler)
1734 * optimization: more accurate type-inference for loops that use a
1735 floating point index variable or a negative step.
1737 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1738 * bug fix: add a workaround to SBCL looping infinitely at startup on
1739 Linux kernels with apparently buggy implementations of personality().
1740 (thanks to Svein Ove Aas)
1741 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1742 (thanks to David Lichteblau)
1743 * bug fix: local bindings shadow global symbol macros for
1744 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1745 * optimization: non-open coded uses of numeric comparison operators
1746 (e.g. >) no longer cons when called with more than one parameter
1747 on platforms supporting dynamic-extent allocation.
1748 * enhancement: saving cores with foreign code loaded is now supported
1749 on MIPS/Linux in addition to the previously supported platforms.
1750 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1751 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1752 * bug fix: division by zero in sb-sprof when no samples were collected
1753 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1754 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1755 (thanks to Alexander Kjeldaas)
1756 * new feature: ignoring the return values of destructive functions
1757 like NREVERSE signals a compile-time style-warning.
1758 (thanks to Kevin Reid)
1759 * new feature: the alignment of alien structure fields can be
1760 explicitly specified. (thanks to Cyrus Harmon)
1761 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1762 and dump core on SIGQUIT
1764 ** incompatible change: threads do not inherit values of specials
1765 from their parents (see manual)
1766 ** bug fix: threads stacks belonging to dead threads are freed by the
1767 next exiting thread, no need to gc to collect thread stacks anymore
1768 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1769 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1770 ** bug fix: dynamic variable and thread start related gc lossage
1771 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1773 * fixed some bugs revealed by Paul Dietz' test suite:
1774 ** SUBTYPEP is slightly more accurate on heinously complicated
1775 CONS types where some of the members have uncertain (in the
1776 NIL, NIL sense) type relationships to each other.
1778 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1779 no longer purified unless :PURIFY T is explicitly specified.
1780 ** Non-purified cores are significantly smaller than before
1782 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1783 * new feature: timers based on Zach Beane's excellent timer package
1784 * added support for the following external formats: koi8-u,
1785 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1786 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1787 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1788 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1789 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1790 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1791 * incompatible change: a threaded SBCL will no longer revert to
1792 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1793 * bug fix: interrupts are disabled until startup is complete; no
1794 more sigsegvs when receiving a signal to soon
1795 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1797 * bug fix: add a workaround for the memory randomization features in
1798 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1799 workaround will only be in effect on systems with the proc filesystem
1801 * bug fix: printing objects of type HASH-TABLE signals a
1802 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1804 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1805 have been running for over 50 days. (reported by Gilbert Baumann)
1806 * bug fix: the logic for getting names of functions gets less
1807 confused when confronded with alternate-metaclass
1808 funcallable-instances. (reported by Cyrus Harmon)
1809 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1810 consistent, even on internal alternate-metaclass objects.
1811 * bug fix: flush closure information collected by physical
1812 environment analysis prepass before the main pass. (bug reported
1814 * bug fix: compiler pack phase does not modify a hashtable, which is
1815 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1816 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1817 may be expanded. (reported by Alexander <malishev> on c.l.l)
1818 * bug fix: no more style-warnings when compiling code using LAST
1819 under high-SPEED low-SPACE settings. (reported by David Wallin
1821 * fixed some incompatibilities between SBCL's MOP and the MOP
1823 ** the METAOBJECT class is now implemented;
1824 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1825 STANDARD-OBJECT, as required;
1826 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1827 now compatible (as required by VALIDATE-SUPERCLASS); there
1828 remains a consistency requirement over the presence or absence
1829 of the FUNCTION class in the superclass list of finalized
1830 classes; see the manual for more details;
1831 ** the :AROUND method for COMPUTE-SLOTS on
1832 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1833 requested slot ordering.
1835 ** bug fix: parent thread now can be gc'ed even with a live
1837 ** bug fix: binding a special with PROGV to no value is not
1838 the same as that symbol not having been bound (thanks to
1840 ** bug fix: binding specials is thread safe (thanks to
1842 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1843 and SB-SPROF do not die with 'no handler for signal XX in
1844 interrupt_handle_now(..)' anymore
1845 ** bug fix: WITH-TIMEOUT works with multiple running threads
1846 * fixed some bugs revealed by Paul Dietz' test suite:
1847 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1848 the :method-class keyword argument.
1850 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1851 * new port: the Solaris operating system on x86 processors is now
1852 mostly supported, though some rough edges in the environment
1853 remain. (thanks to Daisuke Homma)
1854 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1855 space for its heap. (thanks to Thiemo Seufer)
1856 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1857 closures. (thanks to Thiemo Seufer)
1858 * minor incompatible change: eof selects abort in the debugger.
1859 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1860 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1862 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1863 deprecated, and will go away in a future revision of SBCL.
1864 * minor incompatible change: GC-ON and GC-OFF are no longer
1865 implemented with a counter, it does not matter how many times gc
1866 is switched on or off
1867 * bug fix: discriminating functions for generic function classes
1868 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1869 make invalid assumptions about method precedence order. (reported
1871 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1872 platforms. (thanks to Thiemo Seufer)
1873 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1874 * bug fix: correct pathname printing with printer escaping is on.
1875 (thanks to Kevin Reid)
1876 * bug fix: complex VOP definitions in "user-space" no longer trigger
1877 package locks. (reported by Zach Beane)
1878 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1879 for funcallable-instance functions, and is no different from
1881 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1882 characters in the current readtable. (reported by Nicholas Neuss)
1883 * bug fix: SUBTYPEP on various CONS types returns more a more
1884 accurate acknowledgment of its certainty.
1885 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1886 lists in some cases. This partially fixes bug 384.
1887 * flush all standard streams before prompting in the REPL and the
1889 * bug fix: signal handling and triggering gc do not conflict
1890 directly anymore, in particular a high frequency sb-sprof does
1891 not prevent gc from running
1892 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1893 approximation for timezone and DST information between the
1894 universal time epoch and the smallest negative 32-bit time_t.
1895 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1896 year 1899 so long as the encoded time is non-negative.
1897 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1898 the correct answer for non-constant rotate amounts when performing
1899 an inline 32-bit rotation.
1901 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1902 there is only one thread in the session
1903 ** bug fix: memory leak for streams created in one thread and
1904 written to in another
1905 ** bug fix: lockup when compiled with gcc4
1906 ** bug fix: race that allows the gc to be triggered when gc is
1908 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1909 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1911 ** bug fix: finished threads are gc'ed properly
1912 * fixed some bugs revealed by Paul Dietz' test suite:
1913 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1914 has arguments with a different set of applicable methods from
1915 the orignal arguments.
1916 ** The type error thrown by MAP now has a correct expected-type
1918 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1919 name a compiled function.
1920 ** Three MISC tests where a large bignum was improperly coerced to
1921 a float that couldn't represent that bignum during type
1922 derivation were fixed.
1923 ** SUBTYPEP can now handle types involving the negation of a
1924 list-form FUNCTION type.
1925 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1926 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1927 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1929 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1930 * New feature: Experimental support for bivalent streams: streams
1931 opened with :element-type :default now allow character and binary
1932 (unsigned-byte 8) I/O
1933 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1934 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1936 * bug fix: no more highly sporadic "couldn't check whether ~S is
1937 readable" when reading a stream and an interrupt hits in the middle
1938 of a select system call
1939 * compiler better recognizes complex arrays (reported by Eduardo
1941 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1942 for variables on SBCL built with linkage-tables. (reported by Luis
1944 * various error reporting improvements.
1945 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1946 (Thanks to Thiemo Seufer)
1947 * bug fix: nested reader invokations work correctly
1948 * bug fix: it is possible to have simultaneous references to foreign
1949 code and foreign data with the same name.
1951 ** added x86-64 support
1952 ** incompatible change: the threading api now works with thread
1953 objects instead of thread ids
1954 ** bug fix: threads are protected from signals and interruption when
1955 starting up or going down
1956 ** bug fix: a race where an exiting thread could lose its stack to gc
1957 ** bug fix: don't halt on infinite error in threads if possible
1958 ** fixed numerous gc deadlocks introduced in the pthread merge
1959 ** bug fix: fixed thread safety issues in read and print
1960 ** bug fix: debugger doesn't hang on session lock if interrupted at
1961 an inappropriate moment
1962 ** bug fix: run-program is now thread safe(r)
1963 ** bug fix: inner with-recursive-lock no longer releases the mutex
1964 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1965 * fixed some bugs revealed by Paul Dietz' test suite:
1966 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1967 EXPECTED-TYPE slots filled.
1968 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1970 ** MAKE-CONDITION accepts classes as type-designators.
1971 ** COMPILE may never return NIL.
1972 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1973 range before calling Unix time functions
1975 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1976 * numerous signal handling fixes to increase stability
1977 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1978 * minor incompatible change: we now correctly canonize default
1979 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1980 as per the MOP, rather than the historical (INITARG INITFUNCTION
1981 INITFORM). (reported by Bruno Haible)
1982 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1983 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1984 for more information.
1985 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1986 pathname is a directory pathname.
1987 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1988 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1990 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1991 :METACLASS argument in addition to a class name. (reported by
1992 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1993 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1994 (reported by Bruno Haible; patch from Gerd Moellmann)
1995 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1997 * bug fix: more cleanups to the floating point exception handling on
1998 x86-64 (thanks to James Knight)
1999 * bug fix: the compiler does not try to constant fold calls of
2000 COERCE and BIT-* functions when they return freshly constructed
2001 objects. (reported by Nikodemus Siivola and Paul Dietz)
2002 * optimization: improved the MIPS versions of generic (in the
2003 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2004 * optimization: direct conversion of (unsigned-byte 32) to floats on
2005 the PowerPC platform.
2006 * optimization: structure instances with raw slots now use less
2007 memory, and probably show better memory locality. (thanks to
2009 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2010 are treated as requests for stack allocation on the x86-64,
2011 Alpha-32, PPC and SPARC platforms.
2012 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2013 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2014 (thanks to Tony Martinez)
2016 ** gcing a dead thread can no longer lead to lockups
2017 ** threads block signals until they are set up properly
2018 ** errno is no longer shared by threads
2019 ** interrupt-thread restores the eflags register on x86
2020 ** fixed some lockups due to gc/thread interaction
2021 * fixed some bugs revealed by Paul Dietz' test suite:
2022 ** invalid dotted lists no longer raise a read error when
2023 *READ-SUPPRESS* is T
2024 ** signal an error if a symbol that names a declaration is used
2025 as the name of a type, or vice versa
2026 ** allow using the (declare (typespec var*)) abbreviation for
2027 (declare (type typespec var*)) with all type specifiers
2028 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2029 ** always return NIL from PPRINT-POP when OBJECT is NIL
2030 ** don't signal errors when pretty-printing malformed LABELS,
2031 FLET or MACROLET forms
2032 ** declarations in a DOLIST body are also in scope for the
2034 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2036 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2039 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2040 * fixed cross-compiler leakages that prevented building a 32-bit
2041 target with a 64-bit host compiler.
2042 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2043 opened with :IF-EXISTS :OVERWRITE.
2044 * fixed bug 281: error for an invalid qualifier in a short-form method
2045 combination method is not signalled until the faulty method is called.
2046 * bug fix: iteration variable type inferrer failed to deal with open
2047 intervals. (reported by Alan Shields)
2048 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2049 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2050 or more runtime options were provided to the sbcl binary.
2051 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2052 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2053 * optimization: there's now a fast-path for fixnum arguments in the
2054 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2055 * optimization: the code generated on x86-64 is more compact thanks
2056 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2057 * bug fix: floating-point exception handling now partly works on
2058 x86-64. (Thanks to James Knight)
2059 * improvement to the MIPS backend from Thiemo Seufer: C-style
2060 64-bit long long arguments and return values to alien functions
2062 * fixed some bugs revealed by Paul Dietz' test suite:
2063 ** the type-error signalled from WARN has a filled-in DATUM slot.
2064 ** the type-error required when a stream is not associated with
2065 a file has the stream as its datum.
2066 ** type-errors on single-floats on x86-64 no longer have
2067 :INVALID-OBJECT as the datum
2068 ** the type-errors signalled for invalid function names now have
2069 a correct expected type
2070 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2071 for structures defined with a :TYPE. Documentation strings for
2072 typed structures are no longer immediately discarded
2073 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2074 broadcast streams and synonym streams. FILE-LENGTH now also works
2075 on broadcast streams.
2077 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2078 * incompatible change: the --noprogrammer option, deprecated since
2079 version 0.7.5, has been removed. Please use the equivalent
2080 --disable-debugger option instead.
2081 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2083 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2084 inoperational for a while now) has been completely removed.
2085 * null lexical environments are now printed as #<NULL-LEXENV>,
2086 significantly reducing the amount of clutter in typical backtraces.
2087 * documentation on weak pointers, finalization, and after GC hooks
2088 has been added to the manual.
2089 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2090 as other specialized array types, is much faster. SUBSEQ and
2091 COPY-SEQ on such arrays have also been sped up.
2092 * optimization: EQL is now more efficient when at least other argument
2093 is known to be of type (OR FIXNUM (NOT NUMBER)).
2094 * fixed bug: the runtime is now less vulnerable to changes in the
2095 size of the SBCL object on OS X, and virtual memory is reserved for
2096 all spaces that need to be at a fixed address.
2097 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2098 * fixed bug: finalizers and after GC hooks that cause consing are now
2100 * fixed bug: compiler error messages and summaries are now printed to
2101 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2102 * fixed inference of the upper bound of an iteration variable.
2103 (reported by Rajat Datta).
2104 * fixed bug 211e: calling local functions with duplicated constant
2105 keyword argument no longer causes a bogus style warning about an
2107 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2108 ftype declaration to be disregarded. (reported by Dave Roberts)
2109 * fixed bug 373: caused by erronous compilation of references to alien
2110 variables in the runtime on ppc/darwin.
2111 * fixed bug 376: CONJUGATE type deriver.
2112 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2113 (reported by Baughn on #lisp)
2114 * a cross-compiler bug on non-x86 platforms has been identified and
2115 fixed. (thanks to Bruno Haible)
2116 * improvements to the MIPS runtime code for increased stability.
2117 (thanks to Thiemo Seufer)
2118 * increased the maximimum compact environment size to allow
2119 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2120 * partial workaround for bug 135: don't name the function we're
2121 calling for hairy cases of EVAL, so as not to accumulate one environment
2122 entry per call to EVAL. (reported by Kevin Reid)
2123 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2124 * optimization: type testing for non-vector arrays should be faster.
2125 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2127 * bug fix: setting 31st element of a bit vector to zero did not work
2129 * bug fix: redefining a class definition which failed due to a
2130 previous accessor / function clash now works (but see BUGS entry
2131 #380 for more problems in this area). (thanks to Zach Beane)
2132 * the long form of DEFINE-METHOD-COMBINATION disables method group
2133 checking when given a single method group with pattern *. (thanks
2135 * on x86 compiler supports stack allocation of results of simple
2136 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2137 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2138 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2139 * fixed some bugs related to Unicode integration:
2140 ** the restarts for recovering from input and output encoding
2141 errors only appear when there is in fact such an error to
2143 * fixed some bugs revealed by Paul Dietz' test suite:
2144 ** MISC.549 and similar: late transformation of unsafe type
2145 assertions into derived types caused unexpected code
2147 ** SCALE-FLOAT type deriver is less wrong.
2148 ** type derivers for EXP, LOG and similar functions compute result
2149 types for complex arguments better.
2150 ** (MISC.563) CONJUGATE type deriver works for very restricted
2152 ** out-of-line type testers for character strings are available.
2153 ** EQUAL compiler transform understands specialness of objects
2155 ** accessing double-floats stored on the stack now works on x86-64.
2156 ** debugger internals could sometimes create invalid lispobjs,
2157 resulting in GC crashes.
2158 ** MISC.548: type check weakening can convert required type into
2160 ** initialization forms for bindings are not in scope of free special
2163 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2164 * incompatible change: thread support for non-NPTL systems has
2165 been removed - locking is buggy and unreliable. A threaded
2166 SBCL build will now warn at startup and refuse to create
2167 new threads, unless futex support is detected in the kernel
2168 * incompatible change: the top level REPL now has only an ABORT
2169 restart associated with it, not TOPLEVEL and ABORT as it used to.
2170 TOP and TOPLEVEL are now available as debugger commands for
2171 returning to the top level.
2172 * incompatible change: forms evaluated in the REPL now use the
2173 global optimization policy.
2174 * incompatible change: user- and system-initialization files are
2175 no longer processed with LOAD, but by READ and EVAL; hence the
2176 global optimization policy, startup package, readtable, etc,
2178 * The .fasl file format number has been incremented because of
2179 various incompatible changes.
2180 * internal entry point details and argument counts no longer appear
2181 in backtraces unless explicitly requested by setting
2182 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2183 * built-in and standard functions no longer have names like "top
2184 level local call to FOO".
2185 * fixed bug 32: functions defined in non-null lexical environments
2186 now have more legible printed representation
2187 * fixed bug 33: functions defined in non-null lexical environemnts
2188 are now more amenable to inspection by INSPECT.
2189 * workaround for bug 354: XEPs no longer appear in backtraces unless
2190 explicitly requested.
2191 * fixed bug: receiving the signal which results from attempting to
2192 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2193 SIGBUS on other *BSDs) on architectures where the C stack is also
2194 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2195 to debugger confusion or wild instability. (reported by Cheuksan
2197 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2198 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2199 (reported by Lutz Euler)
2200 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2201 compiled code. (reported by Paul Dietz)
2202 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2203 specialized parameter to a method to something that is not TYPEP
2204 the specializer is now possible.
2205 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2206 face of package deletion.
2207 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2208 pathname. (reported by David Tolpin on c.l.l)
2209 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2210 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2211 STRING-STREAM and FILE-STREAM, respectively.
2212 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2213 than previously; in addition, its test suite is now run on build.
2214 (thanks to Luke Gorrie)
2215 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2216 * optimization: added a immediate representation for single-floats
2218 * fixed some bugs revealed by Paul Dietz' test suite:
2219 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2220 ** attempting to create a package with a colliding nickname causes
2221 correctable errors to be signalled.
2222 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2223 ** several x86-64 backend bugs related to sign-extension of immediate
2226 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2227 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2228 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2230 * fixed loading of multiply forward-referenced layouts.
2231 (thanks to Cheuksan Wang)
2232 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2233 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2234 (see COMPILE-FILE documentation for details of :PRINT option)
2235 * fixed bugs 19 and 317: fixed-format floating point printing is
2236 more accurate. This also fixes a bug reported by Adam Warner
2237 related to the ~@F format directive.
2238 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2240 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2241 dispatch table if the from-char is a dispatch macro character.
2242 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2243 by the wordsize no longer ignore the last word. (reported by Lutz
2245 * fixed bug in type checking of dynamic-extent variables. (reported
2247 * optimization: sequence traversal functions use their freedom to
2248 coerce function designators to functions.
2249 * optimization: code with many calls to CLOS methods specialized on
2250 CLOS classes has had redundant type checks removed.
2251 * optimization: added declarations to speed up operations that access
2252 the internal character database (for example STRING-UPCASE)
2253 * optimization: comparison operations between floats and sufficiently small
2254 fixnums no longer create extra rationals
2255 * fixed some bugs related to Unicode integration:
2256 ** portions of multibyte characters at the end of buffers for
2257 character-based file input are correctly transferred to the
2258 start of the buffer at the next read.
2259 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2260 passing it through to OPEN.
2261 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2262 argument given to internal calls to OPEN.
2263 ** the built-in comment readers (introduced by character sequences
2264 ";" and "#|") are more forgiving to encoding errors; they will
2265 STYLE-WARN and then attempt to resync the stream at a character
2266 boundary. (thanks to Teemu Kalvas)
2267 * fixed some bugs in the x86-64 port:
2268 ** Negative short int return values from c-calls are sign-extended
2270 ** The stack is aligned to 16-bytes for c-calls, as required by
2271 the ABI. (thanks to Cheuksan Wang)
2272 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2273 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2274 for enums. (thanks to Vincent Arkesteijn)
2275 ** Multiple small optimizations and bugfixes for floating point
2277 * fixed some bugs revealed by Paul Dietz' test suite:
2278 ** Space, Tab, Linefeed, Return and Page have the invalid
2279 secondary constituent character trait.
2280 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2282 ** WITH-INPUT-FROM-STRING should only update the index place on
2284 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2285 works more reliably.
2286 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2287 with one-dimensional arrays with fill pointers.
2288 ** TYPE-OF failed on a complex with an integer realpart and a
2290 ** compiler failure during type inference for the code of form
2291 (IF (EQL X (THE ...)) ...) (MISC.535).
2293 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2294 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2295 platform. The port supports 61-bit fixnums, large memory spaces
2296 and reloading shared object files.
2297 * enhancement: saving cores with foreign code loaded is now
2298 supported on ppc/Darwin in addition to the previously supported
2300 * enhancement: the statistical profiler now walks deeper into the
2301 call stack for more meaningful call-graphs and accrued time
2302 reports (x86/x86-64 only). It also now reports time spent in
2304 * enhancement: it is now possible to trace most individual methods
2305 of a generic function in addition to tracing the generic function
2307 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2309 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2310 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2311 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2312 produces an error. (thanks to Vincent Arkesteijn)
2313 * bug fix: NAMESTRING on pathnames with :WILD components in their
2314 directories works correctly. (thanks to Artem V. Andreev)
2315 * fixed bug 125: compiler preserves identity of closures. (reported
2317 * bug fixed: functions with &REST arguments sometimes failed with
2318 "Undefined function" when compiled with (DEBUG 3). (reported by
2320 * bug fix: overflow during compiling of setting element of a bit
2321 vector with constant index and value. (reported by Timmy Douglas)
2322 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2323 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2324 * on x86 compiler partially supports stack allocation of dynamic-extent
2326 * GO and RETURN-FROM do not check the extent of their exit points
2327 when compiled with SAFETY 0.
2328 * fixed some bugs related to Unicode integration:
2329 ** encoding and decoding errors are now much more robustly
2330 handled; it should now be possible to recover even from invalid
2331 input or output to the terminal. (thanks to Teemu Kalvas)
2332 ** provided a first cut at implementing STRING-TO-OCTETS and
2333 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2334 ** altered the SB-MD5 contributed module slightly, changing the
2335 interface just enough for it to be supportable for builds where
2336 lisp characters are not eight bits.
2337 * fixed some bugs revealed by Paul Dietz' test suite:
2338 ** the FORMATTER-generated functions for ~V[ conditionals require
2339 the correct number of arguments.
2340 ** READ-FROM-STRING returns the mandated second value when applied
2341 to displaced strings.
2342 ** the #\Rubout and #\Backspace characters are treated as invalid
2343 constituent characters by the tokenizer.
2345 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2346 * new feature: reloading changed shared object files with
2347 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2348 * new feature: references to foreign variables and functions
2349 can now be compiled and loaded before the corresponding shared
2350 object file is loaded, as long as the foreign definitions are
2351 available at runtime.
2352 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2353 supported. (thanks to Dan Debertin)
2354 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2355 just keywords. (thanks to Vincent Arkesteijn)
2356 * fixed bug #331: structure-class instances corresponding to
2357 DEFSTRUCT forms are now created eagerly.
2358 * fixed bug #345: backtraces from calls to undefined functions work
2359 on x86 as well. Related bug #61 is now also partially fixed on x86
2360 (backtraces from throws to unknown catch tags.)
2361 * bug fix: lambda-list parsing is now stricter vrt. order and number
2362 of lambda-list keywords.
2363 * bug fix: as specified by AMOP, an error is signalled if a
2364 class-option appears multiple times in a DEFCLASS form. (reported
2366 * bug fix: RANDOM can be compiled when the compiler derives the type
2367 of its numeric argument as a disjoint set of small integers.
2368 (reported by Paul Dietz)
2369 * bug fix: starting a core saved with shared objects loaded when
2370 those objects are not available no longer causes threaded SBCL to
2371 hang. (reported by Sean Ross)
2372 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2374 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2375 argument, which must always be NIL. (reported by Kalle Niemitalo)
2376 * bug fix: printing 1.0d+23 no longer results in an error.
2377 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2378 * bug fix: structure slot setters preserve evaluation order. (thanks
2380 * fixed some bugs related to Unicode integration:
2381 ** RUN-PROGRAM can allow its child to take input from a Lisp
2382 stream. (reported by Stefan Scholl)
2383 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2384 locales. (reported by Ken Causey)
2385 * fixed some bugs revealed by Paul Dietz' test suite:
2386 ** INCF, DECF and REMF evaluate their place form as specified in
2388 ** FORMATTER expands ~{ ~} iteration directives with V or #
2389 parameters correctly.
2390 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2391 consequent uses no arguments correctly.
2392 ** the system has a partial understanding of the (COMPLEX RATIO)
2394 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2397 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2398 * new feature: a build-time option (controlled by the :SB-UNICODE
2399 keyword feature, enabled by default) for building the system with
2400 support for the entire 21-bit character space defined by the
2402 * new feature: the system now has rudimentary external-format
2403 support; the primary user-visible change at this time is that
2404 characters with the high bit set (such as lower-case-e-acute) will
2405 print correctly to a terminal in a UTF-8 environment.
2406 * minor incompatible change: BASE-CHAR no longer names a class;
2407 however, CHARACTER continues to do so, as required by ANSI.
2408 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2409 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2410 has been moved to the SB-EXT package (temporarily re-exported from
2412 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2413 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2415 * fixed bug #351: better error-handlind and reporting for malformed
2417 * fixed bug #350: bignum-printing is now more memory-efficient,
2418 allowing printing of very large bignums, eg. (expt 2 10000000).
2419 (reported by Bruno Haible)
2420 * fixed bug #302: better primitive-type selection for intersection
2422 * fixed bug #308: non-graphic characters now all have names, as
2423 required. (reported by Bruno Haible)
2424 * bug fix: redefining a class with different superclasses now correctly
2425 removes it from the direct-subclasses of its previous superclasses.
2426 (reported by David Morse)
2427 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2428 new value now works. (reported by Bruno Haible)
2429 * bug fix: correct canonicalization of multiple non-standard slot
2430 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2431 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2432 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2433 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2434 now exists, an signals an error.
2435 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2436 during macroexpansion for non-iteration variables as well. (reported
2437 by Bruno Haible for CMUCL)
2438 * bug fix: Cyclic structures and unprintable objects in compiler
2439 messages no longer cause errors. (reported by Bruno Haible)
2440 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2441 and READ-FROM-STRING all now return a primary value of NIL if
2442 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2443 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2444 (reported by Bruno Haible for CMUCL)
2445 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2446 do not designate a condition. (reported by Bruno Haible for
2448 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2449 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2450 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2451 permitting resolution in favour of any of the conflicting symbols.
2452 (reported by Bruno Haible for CMUCL)
2453 * bug fix: EQUAL compiler optimizations is less aggressive on
2454 strings which can potentially compare true despite having distinct
2455 specialized array element types.
2456 * bug fix: unit enumerations can be defined without dividing by
2457 zero. (thanks to Vincent Arkesteijn)
2458 * FORMAT compile-time argument count checking has been enhanced.
2459 (report from Bruno Haible for CMUCL)
2460 * a partial workaround for the bug 262: the compiler does not try to
2461 inline-expand a local function doing RETURN-FROM from a deleted
2462 BLOCK. (thanks to Peter Denno for the bug report and to David
2463 Wragg for the simple test case)
2464 * fixed some bugs revealed by Paul Dietz' test suite:
2465 ** RENAME-PACKAGE allows all package designators as new package
2467 ** constraint propagation and lambda variable substitution are
2468 more cautious in dealing with partially deleted code.
2469 ** compiler sometimes lost reoptimization passes.
2470 ** CERROR, given a condition as condition designator, passes its
2471 remaining arguments to the continue format control without
2473 ** Case-altering FORMAT directives work correctly on non-ASCII
2475 ** The REAL type specifier handles bounds outside the floating
2476 point ranges without signalling FLOATING-POINT-OVERFLOW.
2477 ** Functions with IR1-transformations can create intercomponent
2478 references to global functions.
2479 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2481 ** FORMAT ~R treats a nil value for its first parameter correctly.
2483 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2484 * enhancement: saving cores with foreign code loaded is now
2485 supported on x86/NetBSD and sparc/Linux in addition to the previously
2486 supported platforms.
2487 * bug fix: on some platforms repeated installations caused multiple
2488 copies of HTML documentation to be installed -- should not happen
2489 any more. (reported by Stefan Scholl)
2490 * bug fix: parsing self-recursive alien record types multiple times
2491 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2492 original patch by Helmut Eller for CMUCL)
2493 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2494 (thanks to Richard Kreuter)
2495 * bug fix: defining classes whose accessors are methods on existing
2496 generic functions in other (locked) packages no longer signals
2497 bogus package lock violations. (reported by François-René Rideau)
2498 * bug fix: special variables as DEFMETHOD parameters no longer have
2499 associated bogus type declarations. (reported by David Wragg and
2501 * bug fix: read-write consistency on streams of element-type
2502 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2503 * bug fix: redefiniton of the only method of a generic function with
2504 no DEFGENERIC no longer emits a full WARNING. In addition,
2505 redefinition of generic functions with no DEFGENERIC to an
2506 incompatible lambda list now signals an error. (thanks to Zach
2508 * bug fix: DEFGENERIC now works even when there's a function of the
2509 same name in an enclosing lexical environment. (thanks to Zach
2511 * fixed compiler failure, caused by instrumenting code during
2512 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2513 * optimization: added loop analysis and improved register allocation
2514 * fixed some bugs revealed by Paul Dietz' test suite:
2515 ** POSITION on displaced vectors with non-zero displacement
2516 returns the right answer.
2517 ** (SIMPLE-STRING) is a valid type specifier for sequence
2519 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2521 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2522 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2524 ** The justification version of the FORMAT ~< directive treats
2525 non-zero minpad parameter correctly.
2527 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2528 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2529 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2530 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2531 the supported interface.
2532 * new feature: Single-stepping of code compiled with DEBUG 2 or
2533 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2534 * new feature: saving cores with foreign code loaded is now
2535 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2536 Timothy Moore's work for CMUCL)
2537 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2538 parameters to * instead of NIL if no initform is supplied.
2539 (reported by Johan Bockgaard)
2540 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2541 correctly when FUNCALL appears as the car of the form. Note:
2542 despite this FUNCALL forms are not currently subject to
2543 compiler-macro expansion. (port of Raymond Toy's fix for the
2544 same from CMUCL, reported by Johan Bockgaard)
2545 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2546 (thanks for Teemu Kalvas)
2547 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2548 case instead of terminating the iteration (thanks for Julian
2549 Squires, Sean Champ and Raymond Toy)
2550 * bug fix: incorrect expansion of defgeneric that caused a style
2551 warning. (thanks for Zach Beane)
2552 * bug fix: slot accessor effective method computation works properly
2553 for classes with multiple non-standard applicable methods on
2554 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2555 * on x86 compiler supports stack allocation of results of LIST and
2556 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2557 CMUCL implementation by Gerd Moellmann)
2558 * fixed some bugs revealed by Paul Dietz' test suite:
2559 ** FORMAT strings with both the ~<~:;~> form of the justification
2560 directive and pretty-printing directives cause an error.
2562 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2563 * incompatible change: the internal functions
2564 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2565 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2566 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2567 instead of the old functions.
2568 * new feature: on platforms where "dladdr" is available foreign
2569 function names now appear in backtraces. (based on Helmut Eller's
2571 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2572 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2574 * documentation: ASDF manual is now distributed with SBCL.
2575 * bug fix: SBCL can now load its contributed modules with REQUIRE
2576 even if the system-provided entries have been removed from
2577 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2579 * bug fix: backtraces involving undefined functions or assembly
2580 routines are more informative. (thanks to Brian Downing)
2581 * bug fix: mutually referent alien structures now work correctly.
2582 (reported by Rick Taube)
2583 * bug fix: structures defined by WITH-ALIEN can be referred to
2584 within other definitions in the same WITH-ALIEN.
2585 * bug fix: division operators (MOD, TRUNCATE and the like) with
2586 constant zero divisors and integer dividends no longer generate
2588 * bug fix: provide default methods for INPUT-STREAM-P and
2589 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2590 * bug fix: improve the detection and resolution of MOP metacycles
2591 (where effective method computation depends on the generic function
2592 having its effective method computed). (reported by Bruno Haible)
2593 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2594 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2595 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2596 * bug fix: pathnames with relative directory components can be
2597 represented relative to default pathnames.
2598 * optimization: in taking the GCD of bignums, reduce the two bignums
2599 to approximately the same size (using Euclid's algorithm) before
2600 applying the more sophisticated binary GCD. (thanks to Juho
2602 * optimization: COUNT on bitvectors now operates word-at-a-time.
2603 * optimization: ASH with a positive, but not necessarily constant,
2604 (leftwards) shift, when in a modular context, is compiled to a
2606 * fixed some bugs revealed by Paul Dietz' test suite:
2607 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2608 if the corresponding argument is NIL.
2609 ** FORMAT directives accepting a minpad parameter treat negative
2611 ** literal commas as character parameters to FORMAT directives are
2613 ** literal spaces directly after ~<Newline> directives within a
2614 format-logical-block (~:< ~@:>) do not induce :FILL-style
2615 conditional newlines.
2616 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2617 as specified: it no longer includes conditional newlines).
2618 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2620 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2621 :PER-LINE-PREFIX argument does not evaluate to a string.
2623 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2624 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2625 the manual for details; for now, package locks can be disabled by
2626 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2627 if no major problems are found then it is likely that they will be
2628 compiled in unconditionally.
2629 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2630 unsupported operators on all platforms. To load a shared library
2631 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2632 object file, link it into a shared library outside of SBCL and
2633 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2635 * bug workaround: ROOM T and the GC were not working together
2636 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2637 reporting facility aren't preserved. That reporting has been
2638 disabled, so now until and unless someone figures out how to make it
2639 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2640 * minor incompatible change: as threatened around sbcl-0.8.0, the
2641 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2642 The symbols are also exported from SB-PCL for backwards
2643 compatibility, but more so than before SB-PCL should be treated as
2644 an implementation-internal package.
2645 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2647 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2648 It is known as of this release not to work on the Alpha, however.
2649 * fixed bug #167: errors signalled due to illegal syntax in method
2650 bodies are now more legible.
2651 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2652 designators and can hence be used with TYPEP.
2653 * fixed bug #333: CHECK-TYPE now ensures that the type error
2654 signalled, if any, has the right object to be accessed by
2655 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2656 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2657 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2659 * fixed bug #334: programmatic addition of slots using specialized
2660 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2661 and :ALLOCATION :CLASS slots.
2662 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2663 float exponents. (rereported by Peter Seibel)
2664 * fixed a bug: #\Space (and other whitespace characters) are no
2665 longer considered to be macro characters in standard syntax by
2666 GET-MACRO-CHARACTER.
2667 * fixed bug: initialization of condition class metaobjects no longer
2668 causes an instance of the condition to be created. (reported by
2670 * fixed bug: it is now possible to have slots such that
2671 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2672 description is neither :INSTANCE nor :CLASS.
2673 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2674 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2675 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2676 non-standard SLOT-DEFINITION-ALLOCATION values.
2677 * fixed bugs: various race conditions handling exiting threads.
2678 CL-PPCRE's thread torture test now passes.
2679 * fixed arguably-a-bug: GC time proportional to number of threads in
2680 system even when most of them are idle
2681 * optimization: improved performance of BIT and SBIT on bit-vectors.
2682 * .fasl file incompatibility: The fasl file version number has
2683 been incremented because of changes associated with package locks.
2685 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2686 * minor incompatible change: the system no longer provides
2687 optimization hints (conditions which are TYPEP
2688 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2689 mode; these hints are still emitted when higher SPEED optimization
2691 * new contrib module: a sampling profiler (profiling by statistical
2692 sampling, rather than by instrumenting functions) is available as
2693 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2694 * the behaviour of the standard function ED is now customizeable by
2695 third parties through a hook variable: see ED's documentation
2696 string for information on the protocol.
2697 * the compiler no longer emits efficiency notes for (FUNCALL X)
2698 when the type of X is uncertain under default optimization
2700 * fixed bug 276: mutating a binding of a specialized parameter to a
2701 method to something that is not TYPEP the specializer is now
2703 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2704 exhibit the required behaviour on the x86 platform. (thanks to
2705 Peter van Eynde, Eric Marsden and Bruno Haible)
2706 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2707 even for difficult arguments. (reported by Peter Graves)
2708 * fixed bug 141a: the backquote printer now descends quoted
2710 * fixed another bug in backquote printing: no more destructive
2711 modification of the form's list structure. (reported by Brian
2713 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2714 move between its address being taken and the call to
2715 interrupt_thread, fixing a crashing race condition.
2716 * the SB-POSIX contrib implementation has been adjusted so that it
2717 no longer exhibits ridiculously poor performance when constructing
2718 instances corresponding to C structs.
2720 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2721 * minor incompatible change: the sb-grovel contrib now treats C
2722 structures as alien (in the sense of SB-ALIEN) objects rather than
2723 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2724 has implications for memory management of client code
2725 (sb-grovel-returned objects must now be manually managed) and for
2726 type safety (alien objects now have full types).
2727 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2728 used to control emission of compiler diagnostics, rather than the
2729 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2730 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2731 quality should be considered deprecated.
2732 * install.sh now installs the user manual as well
2733 * (not quite a new documentable feature, but worth considering in
2734 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2735 beginnings of a semantically meaningful condition hierarchy is
2736 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2738 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2739 designator as the defaults argument.
2740 * fixed bug: Displaced arrays whose displaced-to array has become
2741 too small now cause ARRAY-DIMENSION to signal an error, providing
2742 for safer bounds-checking. (reported by Bruno Haible)
2743 * fixed bug: DEFCLASS slot definitions with identical :READER and
2744 :WRITER names now signal a reasonable error. (reported by Thomas
2746 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2748 * fixed bug: Invalid slot specification errors now print correctly.
2749 (thanks to Zach Beane)
2750 * fixed bug 320: Shared to local slot value transfers in class
2751 redefinitions now happen corrently from superclasses as
2752 well. (reported by Bruno Haible)
2753 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2755 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2756 improper lists correctly. (reported by Bruno Haible)
2757 * fixed bug 313: source-transform for <fun-name> was erroneously
2758 applied to a call of a value of a variable with name <fun-name>.
2759 (reported by Antonio Menezes Leitao)
2760 * fixed bug 307: The obsolete instance protocol ensures that
2761 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2762 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2763 remove dead unknown-values globs from the middle of the stack.
2764 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2765 easier to resume long computations after using *BREAK-ON-SIGNALS*
2766 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2767 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2768 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2769 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2770 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2771 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2773 * fixed a (fairly theoretical) bug in string printing: if
2774 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2775 does not have array-element-type equal to the most general string
2777 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2778 function name. (thanks to Nikodemus Siivola)
2779 * fixed bug: compile-time format string checker failed on
2780 non-closed ~{. (reported by Thomas F Burdick)
2781 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2782 don't warn on legal loop code involving more than one aggregate
2783 boolean. (thanks to Nikodemus Siivola)
2784 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2785 in keyword position to MAKE-PACKAGE was not being reported as
2787 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2788 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2790 * fixed bugs 280 and 312: the checking for multiple definitions in a
2791 file is less likely to become confused by uses of inline
2793 * fixed bug: the #S reader macro performs the keyword coercion
2794 specified for slot names. (reported by Kalle Niemitalo)
2795 * fixed bug: lambda lists may contain symbols whose names start with
2796 & but are not lambda-list-keywords; their occurrence triggers a
2798 * fixed bug 321: define-method-combination argument lambda lists do
2799 not cause invalid code to be generated when &optional or &aux
2800 variables have default values. (reported by Bruno Haible)
2801 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2802 have CLOS classes; this appears also to have fixed reported
2803 instability in stack exhaustion detection.
2804 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2805 MUFFLE-WARNING when no associated restart is present is now
2807 * optimization: rearranged the expansion of various defining macros
2808 so that each expands into only one top-level form in a
2809 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2811 * optimization: used a previously little-used slot in symbols to
2812 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2814 * fixed some bugs revealed by Paul Dietz' test suite:
2815 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2817 ** Fixed an optimization bug related to inheritance of initforms
2818 from local to shared slots.
2819 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2820 ** CAST optimizer forgot to flush argument derived type.
2821 ** print/read consistency on floats is now orders of magnitude
2822 more likely. (thanks also to Bruno Haible for a similar report
2824 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2825 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2826 for objects of type REAL. Make it so.
2827 ** SXHASH is specified (infelicitously) to respect similarity,
2828 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2829 it so. (thanks to Markus Ziegler)
2830 ** on the Alpha, the compiler succeeds in compiling functions
2831 returning a known number of arguments greater than 63.
2832 ** fixed handling of invalid NIL arguments in keyword position
2834 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2836 ** provided a readably-printable representation for RANDOM-STATE
2838 ** ensured that pathnames, where they have a namestring, always
2839 print using #P"..." syntax.
2841 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2842 * Support for the forthcoming 2.0 version of the NetBSD kernel
2843 running on x86 hardware has been added. (thanks to Perry
2844 E. Metzger most immediately, and others for their past work)
2845 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2846 current release version; SBCL's OpenBSD support had been broken
2847 since about the time of OpenBSD's switch to ELF binary format.)
2848 * [placeholder for DX summary]
2849 ** user code with &REST lists declared dynamic-extent, under high
2850 speed or space and low safety and debug optimization policy.
2851 * The manual has been converted to Texinfo format and the debugger
2852 chapter from the cmucl manual has been added.
2853 * A facility has been added to extract documentation strings from
2854 sbcl and store them as Texinfo-formatted snippets for inclusion in
2855 the manual (via Texinfo's @include directive)
2856 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2857 the test case to Dave Roberts)
2858 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2859 pointers. (reported by Sean Ross)
2860 * bug fix: PROFILE output is printed nicely even for large numerical
2861 values. (thanks to Zach Beane)
2862 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2863 greater than 32 handle EOF correctly.
2864 * bug fix: on X86 an immediate argument of the IMUL instruction is
2865 correctly printed in disassembly. (thanks to Lutz Euler)
2866 * bug fix: class slots in redefined classes preserve their old
2867 values. (thanks to Bruno Haible and Nikodemus Siivola)
2868 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2869 succeeds. (reported by Marco Baringer)
2870 * fixed some bugs revealed by Paul Dietz' test suite:
2871 ** READ-SEQUENCE now works on ECHO-STREAMs.
2872 ** RATIONALIZE works more according to its specification. (thanks
2875 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2876 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2877 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2878 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2879 should matter to you only if you rebind the printer control
2880 variables and then find you want different bindings in the
2881 debugger than in the ordinary execution of your program.)
2882 * The runtime build system has been tweaked to support building
2883 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2884 assembler and linker. (thanks to Nikodemus Siivola)
2885 * Unbound, undefined, undeclared variables now trigger full
2886 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2887 more often programmer error than deliberate exploitation of undefined
2889 * optimization: the hash algorithm for strings has changed to one
2890 that is less vulnerable to spurious collisions. (thanks to Juho
2892 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2893 needless bounds checking. (thanks to Juho Snellman)
2894 * optimization: implemented multiplication as a modular
2895 (UNSIGNED-BYTE 32) operation on the PPC backend.
2896 * fixed some bugs revealed by Paul Dietz' test suite:
2897 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2899 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2900 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2901 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2903 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2905 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2907 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2908 their output stream on EOF from read.
2909 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2910 have been read to end-of-file.
2911 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2913 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2914 description of determination of which consecutive characters
2916 ** Printing the "Space" character with escaping on now yields "#\\ ",
2917 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2918 ** Reading floating-point numbers with *READ-BASE* set to a number
2919 less than 10 works correctly.
2920 ** Reading floating-point numbers with *READ-BASE* set to a number
2921 more than 10 works correctly.
2922 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2923 the readtable currently in effect.
2925 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2926 * minor incompatible change: parsing of namestrings on a physical
2927 (Unix) host has changed; numbers after the final #\. in a
2928 namestring are no longer interpreted as a version field. This is
2929 intented to be largely invisible to the user, except that the
2930 meaning of the namestring "*.*.*" has changed: it now refers to a
2931 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2932 should usually be replaced by
2933 (make-pathname :name :wild :type :wild :version :wild)
2934 with the added benefit that this is more likely to be portable.
2935 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2936 option to OPEN now signals an error if the file being opened
2937 exists; this may have an impact on existing code.
2938 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2939 signals received, on the PowerPC platforms (both Linux and
2940 Darwin). (thanks to Pierre Mai for pointing out the location of
2942 * several fixes on OS X: The system now builds and runs cleanly on
2943 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2944 (thanks to Brian Mastenbrook)
2945 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2946 second-resolution: integer multiples of 1/3600 between -24 and 24.
2947 (thanks to Vincent Arkesteijn)
2948 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2949 type when called with 1 argument; PEEK-CHAR checked type of
2950 PEEK-TYPE only after having read first character from a
2951 stream. (reported by Peter Graves)
2952 * bug fix: the garbage collector now has much better locality
2953 behaviour, and in particular no longer treats all memory as being
2954 exhausted when many small objects point to each other in a deeply
2956 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2957 recognized as being TYPEP their class.
2958 * bug fix: the PUSHNEW documentation string has been corrected.
2959 (thanks to Vincent Arkesteijn)
2960 * bug fix: defaulting of the value for the last of an atypically
2961 large number of multiple values being bound was not being
2962 performed correctly on the Alpha or PPC platforms
2963 * optimization: implemented multiplication as a modular
2964 (UNSIGNED-BYTE 32) operation on the x86 backend.
2965 * optimization: SEARCH on simple-base-strings can now be open-coded.
2966 (see also contrib/compiler-extras.lisp for inspiration for
2967 teaching the compiler about the Boyer-Moore algorithm).
2968 * value, returned by MAX (and MIN) called with several EQUALP, but
2969 not EQL, arguments now does not depend on compiler settings.
2970 * fixed some bugs revealed by Paul Dietz' test suite:
2971 ** in stack analysis liveness information is propagated from
2972 non-local entry points.
2973 ** pathwise CAST removing failed when the CAST node did not start
2975 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2976 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2978 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2979 host is already defined.
2980 ** RENAME-FILE works on streams instead of signalling an internal
2982 ** PEEK-CHAR uses the current readtable when determining whether
2983 or not a character is whitespace.
2984 ** MERGE-PATHNAMES handles the case when the pathname does not
2985 specify a name while the default-pathname specifies a version.
2986 ** Pathnames now stand a better chance of respecting print/read
2988 ** Attempting to use standardized file system operators with a
2989 pathname with invalid :DIRECTORY components signals a
2991 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2993 ** DIRECTORY on logical pathnames is more correct.
2994 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2995 signal a TYPE-ERROR if their argument is not a stream.
2996 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2997 designator argument does not designate a stream.
2998 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2999 examining the synonym.
3000 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3002 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3003 element-type larger than ([UN]SIGNED-BYTE 32).
3005 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3006 * When built with the :SB-FUTEX feature, threaded builds now take
3007 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3008 for faster/more reliable mutex and condition variable support.
3009 * Incompatible change (but one you probably shouldn't have been using
3010 anyway): the interface and code for arbitrating between multiple
3011 threads in the same user session has been redesigned.
3012 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3013 error when called without an explicit environment argument.
3014 (thanks to Nikodemus Siivola)
3015 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3016 confused about their position. (thanks to Adam Warner and Gerd
3018 * bug fix: Pretty printing backquoted forms with unquotations in the
3019 argument list position of various code constructs such as LAMBDA
3020 now works correctly. (reported by Paul Dietz)
3021 * bug fix: Pretty printing unquotations no longer loses all
3022 stream position information.
3023 * optimization: performance of string output streams is now less
3024 poor for multiple small sequence writes.
3025 * optimization: performance of CSUBTYPEP in the presence of complex
3026 expressions involving CONS and NOT many times has been improved.
3027 (reported by Paul Dietz)
3028 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3030 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3031 streams for the REPL, for the debugger, and so on. (thanks to
3033 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3034 * fixed some bugs revealed by Paul Dietz' test suite:
3035 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3036 is ignored if it is too small, rather than propagating through
3037 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3038 ** extremely complex negations of CONS types were not being
3039 sufficiently canonicalized, leading to inconsistencies in
3041 ** VALUES tranformer lost derived type.
3043 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3044 * fixed a bootstrapping bug: the build process no longer assumes
3045 that the various BOOLE-related constants have the same value in
3046 host and target lisps. (noted by Paul Dietz' test suite on an
3047 SBCL binary built from CLISP)
3048 * The system can now be dynamically linked on the MIPS platform,
3049 which enables dynamic loading of foreign code from Lisp. (thanks
3050 to Ralf Baechle for discussions on the MIPS ABI)
3051 * The system now records debugging information for its own source
3052 files in a filesystem-position-independent manner, relative to
3053 the "SYS" logical host.
3054 * fixed a compiler bug: MV-LET convertion did not check references
3055 to the "max args" entry point. (reported by Brian Downing)
3056 * tweaked disassembly notes to be less confident about proclaiming
3057 some instruction as an LRA. (thanks to Brian Downing)
3058 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3059 now each have their own history, command character, and other
3060 characteristics. (thanks to David Lichteblau)
3061 * fixed some bugs revealed by Paul Dietz' test suite:
3062 ** compiler failure in compiling LOGAND expressions including a
3064 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3065 shift greater than 32.
3066 ** FLUSH-DEST did not mark blocks for type check regeneration.
3067 ** HANDLER-CASE failed to accept declarations in handler clauses
3068 in some circumstances.
3070 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3071 * New code in contrib/sb-introspect (still probably not entirely
3072 stable yet) provides some support for smart Lisp development
3073 environments like SLIME.
3074 * The conditions signalled for errors occurring when loading .fasl
3075 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3076 in a way which should help ASDF recover gracefully.
3077 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3078 stuff has been cleaned up. If you code contrib/ stuff, this might
3079 affect you, and you can look at contrib/README, contrib/STANDARDS,
3080 and/or the 0.8.4.27 diff to check.
3081 * In full calls the compiler now does not generate checks for declared
3082 argument types for all arguments.
3083 * various threading fixes
3084 ** and some experimental patches which didn't make it into
3085 the main tree for this release, but which are shipped in
3086 contrib/experimental-thread.patch as a possible fix for some
3087 failures (deadlock, spinning...) in GC-intensive multithreaded
3089 * fixed PPC build problem (source code incompatibility of different
3090 library versions): added offsetof() hackery which attempts to divine
3091 where glibc maintainers put uc_mcontext today
3092 * fixed bug 282: compiler does not trust type assertions while passing
3093 arguments to a full call.
3094 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3095 &OPTIONAL VALUES type parameter.
3096 * fix bug 214: algorithm for noting rejected templates is now more
3097 similar to that of template seletion. (also reported by rydis on
3099 * fixed bug 141b: printing backquoted information readably and prettily
3100 inserts a space where necessary.
3101 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3102 (CHARACTER 10) are now reported as errors, rather than propagated
3103 as unknown types. (reported by piso on #lisp)
3104 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3105 with values NIL and :ERROR. (thanks to Milan Zamazal)
3106 * fixed bug 191c: CLOS now does proper keyword argument checking as
3107 described in CLHS 7.6.5 and 7.6.5.1.
3108 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3109 longer raise an error; further, using a list as a for-as-arithmetic
3110 counter now raises a meaningful error.
3111 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3112 now understood by sequence creation functions such as MAKE-SEQUENCE
3114 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3115 a STRING-INPUT-STREAM.
3116 * compiler enhancement: SIGNUM is now better able to derive the type
3118 * type declarations inside WITH-SLOTS are checked. (reported by
3120 * fixed some bugs revealed by Paul Dietz' test suite:
3121 ** incorrect optimization of TRUNCATE for a positive first
3122 argument and negative second.
3123 ** compiler failure in let-convertion during flushing dead code.
3124 ** compiler failure while deriving type of TRUNCATE on an
3125 interval, containing 0.
3126 ** ASH of a negative bignum by a negative bignum count now returns
3128 ** intersection of CONS types now canonicalizes properly, fixing
3129 inconsistencies in SUBTYPEP.
3131 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3132 * incompatible change: The --disable-debugger command line
3133 option now clobbers the debugger at a more fundamental
3134 level, by redefining #'INVOKE-DEBUGGER instead of by
3135 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3136 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3137 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3138 enter the debugger REPL and then suffer recursive errors
3139 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3140 while under the new system, BREAK in --disable-debugger mode
3141 terminates the system just as an unhandled error would.
3142 * fixed compiler performance when processing loops with a step >1;
3143 * bug fix: DOCUMENTATION now retrieves generic function
3144 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3145 support has been systematized, and now supports the methods
3146 specified by ANSI, along with a default method and a method for
3147 slot documentation. (reported by Nathan Froyd)
3148 * bug fix: effective methods associated with a generic function are
3149 no longer cached over a change of that generic function's method
3150 combination. (reported by Andreas Fuchs)
3151 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3152 names a non-existent directory. (thanks to Andreas Fuchs)
3153 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3154 the PPC platform, lead to stack corruption; this has been fixed.
3155 (reported by Rainer Joswig)
3156 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3157 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3158 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3159 arithmetic in general, is now much more reliable on the PPC
3161 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3162 platform now returns the right answer.
3163 * optimization: restored some effective method precomputation in
3164 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3165 precomputation is now tunable.
3166 * optimization: compiler-internal data structure use has been
3167 reviewed, and changes have been made that should improve the
3168 performance of the compiler by about 20%.
3169 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3170 simple-base-strings and simple-bit-vectors is improved.
3171 * optimization: the optimization of 32-bit logical and arithmetic
3172 functions introduced in version 0.8.3 on the x86 has been
3173 implemented on the mips, ppc and sparc platforms; an
3174 implementation of the same facility, but for 64-bit arithmetic,
3175 has been added for the alpha.
3176 * microoptimization: the compiler is better able to make use of the
3177 x86 LEA instruction for multiplication by constants.
3178 * bug fix: in some situations compiler did not report usage of
3179 generic arithmetic in (SPEED 3) policy.
3180 * bug 145b fix: compiler used wrong type specifier while converting
3181 MEMBER-types to numeric.
3182 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3184 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3185 index argument now works properly on the Alpha platform.
3186 * bug fix: floating point exception treatment on the Alpha platform
3188 * bug fix: FILE-POSITION works much better on string input and
3189 output streams. (thanks to Nikodemus Siivola)
3190 * bug fix: many threading/garbage collection symptoms sorted.
3191 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3192 might be pseudo-atomic.
3193 * internal change: Stopping for GC is now done with signals not
3194 ptrace. GC is now done in whichever thread wanted it, instead of
3196 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3198 * bug fix: result form in DO is not contained in the implicit
3200 * incompatible change: ICR structure is changed; the value part of
3201 CONTINUATION is now called LVAR; corresponding functions are
3202 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3203 * added type deriver for ISQRT (thanks to Robert E. Brown).
3204 * bug fix: better support for loading from the command line when an
3205 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3207 * fixed some bugs revealed by Paul Dietz' test suite:
3208 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3209 ** ROUND and FROUND now give the right answer when given very
3210 small float arguments.
3211 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3213 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3214 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3215 ** LCM should return a non-negative integer.
3216 ** PARSE-INTEGER returned the index of a terminator instead of the
3217 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3218 ** PARSE-INTEGER returned an incorrect index being applied to a
3220 ** LCM with two arguments of 0 returns 0 rather than signalling
3222 ** unsigned addition of a 32-bit constant with the high bit set no
3223 longer causes an internal compiler error on the x86.
3224 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3225 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3226 with negative last argument.
3227 ** byte specifiers with zero size and position no longer cause
3228 an error during type derivation.
3229 ** bignum multiplication on the Alpha platform now returns the
3231 * porting: The system now builds on SuSE AMD64, although it still
3232 generates a 32-bit binary.
3233 * .fasl file incompatibility: The fasl file version number has
3234 been incremented (because of the changes to internal compiler
3235 data structures referred to above).
3237 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3238 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3239 more accurately, on the Darwin kernel running on PowerPC hardware.
3240 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3241 * Compiler code deletion notes now signal a condition of type
3242 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3243 an associated MUFFLE-WARNING restart.
3244 * The compiler now performs limited argument count validation of
3245 constant format strings in FORMAT, and where appropriate in ERROR,
3246 CERROR and WARN. (thanks to Gerd Moellmann)
3247 * New ASDF-INSTALL contrib can be used for automatic download and
3248 installation of third-party Lisp code from CCLAN or other sites
3250 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3251 which forces another thread to execute a function supplied by the
3253 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3254 now accept and act upon their :ELEMENT-TYPE keyword argument.
3255 (reported by Martin Atzmueller, Edi Weitz)
3256 * bug fix: FILE-POSITION now accepts position designators up to
3257 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3258 is the greater. (thanks to Patrik Nordebo)
3259 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3260 Kalle Olavi Niemitalo)
3261 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3262 printable. (reported by Eric Marsden)
3263 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3264 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3265 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3266 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3267 (thanks to Stig Sandoe)
3268 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3269 UNREAD-CHAR now correctly includes the unread character in the
3270 target sequence. (thanks to Gerd Moellmann)
3271 * bug fix in threaded builds: the system can now be suspended and
3272 resumed by shell job control with minimal disruption.
3273 * bug fixes in times and timezones >2038AD
3274 * better handling of "where is GNU make?" problem in build scripts
3275 (thanks to Nikodemus Siivola)
3276 * new optimization: inside a named function any reference to a
3277 function with the same name is considered to be a self-reference;
3278 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3279 optimization quality.
3280 * new optimization on x86: logical functions and + now have
3281 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3282 used when the result is truncated to 32 bits.
3283 * VALUES declaration is partially enabled.
3284 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3285 * fixed some bugs revealed by Paul Dietz' test suite:
3286 ** The system now obeys the constraint imposed by
3287 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3288 types form a lattice under type intersection.
3289 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3290 ** ASSOC now ignores NIL elements in an alist.
3291 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3292 and (1+ MOST-POSITIVE-FIXNUM) answers.
3293 ** The addition of a method with invalid qualifiers to a generic
3294 function does not cause an error to be signalled immediately;
3295 a warning is signalled, and the error is generated only on
3296 calling the generic function.
3297 * changed .fasl file version number, in part to add type codes for
3298 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3299 obscure ANSI requirements
3301 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3302 * fixed bug 148: failure to inline-expand a local function left
3303 garbage, confusing the compiler.
3304 * fixed bugs 3cd: structure slot readers perform type check if the
3305 slot can have an invalid value (i.e. it is either not initialized
3306 or can be written with a less specific slot writer).
3307 * bug fix: the compiler now traps array references to elements off
3308 the end of an array; previously, the bounds checking in some
3309 circumstances could go off-by-one.
3310 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3312 * type declarations for array element types now obey the description
3313 on the CLHS page "Declaration TYPE", as per discussions on
3314 sbcl-help around 2003-05-08. This means that a declaration
3315 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3316 declaration, all references to BAR will be asserted or assumed
3317 (with THE, so dependent on compiler policy) to involve objects of
3318 type FOO. Note that no such declaration is implied in
3319 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3320 * declared types of functions from the "Conditions"
3321 chapter. (reported by Paul Dietz)
3322 * bug fix: CERROR accepts a function as its first argument.
3323 * bug fix: NTH an NTHCDR accept a bignum as index
3324 arguments. (reported by Adam Warner)
3325 * optimization: character compare routines now optimize comparing
3326 against a constant character. (reported by Gilbert Baumann)
3327 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3328 argument now works properly on the MIPS platform.
3329 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3330 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3331 declared to have a functional type, does not cause an error
3333 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3334 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3335 * fixed bug: if last continuation of a deleted block has a
3336 destination, this destination should be deleted too. (reported by
3338 * fixed a bug in the bootstrap process: the host compiler's values
3339 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3340 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3341 test case from Patrik Nordebo)
3342 * improved the ability of the disassembler on the PPC platform to
3343 provide helpful disassembly notes.
3344 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3345 the class in more cases than previously.
3346 * bug fix: FILE-POSITION now understands :START and :END for
3347 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3348 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3349 8) data. (thanks to David Lichteblau)
3350 * bug fix: it is possible to add a method to a generic function
3351 without lambda list.
3352 * bug fix: reader failed to signal END-OF-FILE inside an
3353 object representation. (reported by Nikodemus Siivola)
3354 * fixed some bugs revealed by Paul Dietz' test suite:
3355 ** LAST and [N]BUTLAST should accept a bignum.
3356 ** condition slot accessors are methods.
3357 ** (VECTOR NIL) is a subtype of STRING.
3359 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3360 * minor incompatible change: some nonsensical specialized lambda
3361 lists (used in DEFMETHOD) which were previously ignored now signal
3363 * minor incompatible change: the system is now aware of the types of
3364 variables in the COMMON-LISP package, and will signal errors for
3365 most violations of these type constraints (where previously they
3366 were silently accepted).
3367 * minor incompatible change: COMPILE-FILE now uses the freedom
3368 afforded (ANSI 3.2.2.3) to use derived function types for
3369 functions defined in the same file. This also permits the system
3370 to warn on static type mismatches and function
3371 redefinition. (Currently it does not work with high DEBUG level.)
3372 * minor incompatible change: VALUES declaration is disabled.
3373 * When issuing notes, the compiler now signals a condition of type
3374 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3375 restart for use in user handlers. It is expected that the
3376 COMPILER-NOTE condition will eventually become a condition
3377 supertype to a hierarchy of note types, which will then be
3378 handleable in a similar fashion. However, at the moment, no such
3379 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3380 but it's an implementation detail, not a classification for the
3382 * Changes in type checking closed the following bugs:
3383 ** type checking of unused values (192b, 194d, 203);
3384 ** template selection based on unsafe type assertions (192c, 236);
3385 ** type checking in branches (194bc).
3386 * A short form of VALUES type specifier has ANSI meaning (it has
3387 increased the number of situations when SBCL cannot perform type
3389 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3390 keywords or constants is permissible.
3391 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3392 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3393 classes. (thanks to Antonio Martinez)
3394 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3395 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3396 argument to a pretty-print stream. Instead, it leaves any such
3397 operations to DESCRIBE-OBJECT methods.
3398 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3400 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3401 lambda lists. (thanks to David Lichteblau)
3402 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3403 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3404 (thanks to Gerd Moellmann)
3405 * fixed bug 246: increased compilation speed of long
3406 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3408 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3410 * DEFCONSTANT now throws a condition of type
3411 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3412 constant to a non-EQL value; CONTINUE and ABORT restarts
3413 respectively change and preserve the value.
3414 * fixed bug 63: The code walker, part of the implementation of CLOS,
3415 is now better at handling symbol macros.
3416 * bug fix: There is no longer an internal implementation type named
3417 CL:LENGTH. (reported by Raymond Toy)
3418 * bug fix: In macro-like defining macros/special operators the
3419 implicit block does not enclose the lambda list.
3420 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3421 enclosed in parentheses) are not suitable as type specifiers, and
3422 their use properly signals an error now.
3423 * bug fix: An argument count mismatch for a type specifier in code
3424 being compiled no longer causes an unhandled error at compile
3425 time, but signals a compile-time warning.
3426 * fixed simple vector readable printing
3427 * bug fix: DESCRIBE takes more care over whether the class
3428 precedence list slot of a class is bound before accessing it.
3429 (reported by Markus Krummenacker)
3430 * bug fix: FORMATTER can successfully compile pretty-printer format
3431 strings which use variants of the ~* directive inside.
3432 * bug fix: SEARCH now applies its TEST predicate to the elements of
3433 the arguments in the correct order. (thanks to Wolfhard Buss)
3434 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3435 in type inference. (thanks to Robert E. Brown)
3436 * bug fix: Reading in symbols with an explicit package name of ""
3437 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3438 * fixed some bugs revealed by Paul Dietz' test suite:
3439 ** NIL is now allowed as a structure slot name.
3440 ** Arbitrary numbers, not just REALs, are allowed in certain
3441 circumstances in LOOP for-as-arithmetic clauses.
3442 ** Multiple class redefinitions before slot access no longer
3443 causes a type error.
3444 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3445 association between the name and a class.
3446 ** Generic functions with non-standard method-combination and over
3447 five methods all of which return constants no longer return NIL
3448 after the first few invocations. (thanks to Gerd Moellmann)
3449 ** CALL-NEXT-METHOD with no arguments now passes the original
3450 values of the arguments, even in the presence of assignment.
3451 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3453 ** DISASSEMBLE works with closures and funcallable instances.
3454 ** ADD-METHOD now returns the generic function, not the new method.
3455 ** FIND-METHOD signals an error if the lengths of the specializers
3456 is incompatible with the generic function, even if the ERRORP
3458 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3459 which its argument is a member.
3460 ** DEFCLASS only redefines the class named by its class-name
3461 argument if that name is the proper name of the class;
3462 otherwise, it creates a new class.
3463 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3464 of the UNBOUND-SLOT condition to the name of the slot.
3465 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3466 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3467 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3468 SLOT-MAKUNBOUND in the specified fashion.
3470 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3471 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3472 cross-compilation host. As a consequence, we can now bootstrap our
3473 way up to SBCL starting with a bare gcc toolchain and human-readable
3474 source code (first the source to CLISP, then the source to SBCL).
3475 * A contributed module containing a partial implementation of the
3476 simple-streams interface has been included. (thanks to Rudi
3478 * A contributed module implementing the RFC1321 Message Digest
3479 Algorithm, known as MD5, has been included.
3480 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3481 no longer has any effect, as the code controlled by this feature
3482 has been deleted. (As far as we know, no-one has ever built using
3483 this feature, and its semantics were confused in any case).
3484 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3485 work on conditions (as required by the ANSI specification),
3486 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3487 expected behaviour on conditions. Users should note, however,
3488 that such behaviour is not required by the ANSI specification,
3489 and so use of this behaviour may render their code unportable.
3490 * fixed some bugs revealed by Paul Dietz' test suite:
3491 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3493 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3494 ** SXHASH on condition objects no longer returns NIL.
3495 ** :ALLOCATION :CLASS slots are better treated; their values are
3496 updated on class redefinition, and initforms inherited from
3497 superclasses are applied.
3498 ** REMOVE-METHOD returns its generic function argument even when
3499 no method was removed.
3500 ** SHARED-INITIALIZE now initializes the values of the requested
3501 slots, including those with :ALLOCATION :CLASS.
3502 ** ALLOCATE-INSTANCE now works on structure classes defined via
3503 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3505 ** SLOT-EXISTS-P now works on conditions, as well as structures
3507 ** MAKE-LOAD-FORM now has the required methods on
3508 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3509 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3510 keyword, and now implements the SLOT-NAMES argument.
3511 ** methods with &OPTIONAL arguments no longer allow too many
3512 arguments to be passed in the call without error.
3513 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3514 option is consistent with the required arguments of the generic
3515 function lambda list.
3516 * bug fix: REQUIRE accepts a string designator. (Thanks to
3518 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3519 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3520 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3521 * bug fix: The compiler now checks for duplicated variables in macro
3523 * bug fix: SETQ on globals returns the correct value.
3524 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3525 not a COMPILER-ERROR (followed by some other strange error on
3526 choosing the CONTINUE restart).
3527 * bug fix: make.sh and friends are now more consistent in the way that
3528 they look for GNU "make".
3530 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3531 * experimental native threads support (on x86 Linux >=2.4 only).
3532 This is not compiled in by default: you need to add :SB-THREAD to
3533 the target features. See the "Beyond ANSI" chapter of the manual
3535 * fix for longstanding nonANSIism: The old distinction between
3536 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3537 The return value from CL:FIND-CLASS is now a CLOS class, and
3538 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3539 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3540 * An interface to the MetaObject Protocol, as described in Kiczales,
3541 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3542 MIT Press, 1991, is available from the SB-MOP package.
3543 * incompatible change: the SB-PCL package should now be considered
3544 a private implementation detail, and no longer a semi-private MOP
3546 * minor incompatible change: due to rearrangement for threads, the
3547 control stack and binding stack are now allocated at arbitrary
3548 addresses instead of being hardcoded per-port. Users affected by
3549 this probably have to be doing advanced things with shared
3550 libraries, and will know who they are.
3551 * minor incompatible change: Previously, all --eval forms used were
3552 processed with READ before any of them were processed with EVAL.
3553 Now each --eval form is processed with both READ and EVAL before
3554 the next --eval form is processed. (Thus package operations like
3555 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3556 work as the user might reasonably expect.)
3557 * minor incompatible change: *STANDARD-INPUT* is now only an
3558 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3560 * minor incompatible change: Y-OR-N-P is now character-oriented,
3561 not line oriented. Also, YES-OR-NO-P now works without errors.
3562 (thanks to Antonio Martinez)
3563 * sb-aclrepl module improvements: an integrated inspector, added
3564 repl features, and a bug fix to :trace command.
3565 * Known functions, which cannot be open coded by the backend, are
3566 considered to be able to check types of their arguments. (fixing
3567 a bug report by Nathan J. Froyd)
3568 * fixed a bug in computing method discriminating functions: It is
3569 now possible to define methods specialized on classes which have
3570 forward-referenced superclasses. (thanks to Gerd Moellmann)
3571 * fixed evaluation order in optional entries (reported by Gilbert
3573 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3574 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3575 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3576 required-by-AMOP NAME argument, as well as CLASS and
3577 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3578 * fixed bug 20: DEFMETHOD can define methods using names that are
3579 not the proper names of classes to designate class specializers.
3580 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3581 Unix file descriptors, instead of blowing up. (thanks to Antonio
3583 * Garbage collection refactoring: user-visible change is that a
3584 call to the GC function during WITHOUT-GCING will not do garbage
3585 collection until the end of the WITHOUT-GCING. If you were doing
3586 this you were probably losing anyway.
3587 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3588 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3589 TYPEP the latter but not the former.
3590 * The compiler issues a full WARNING for calls to undefined functions
3591 with names from the CL package.
3592 * MAP-INTO for a vector destination is open coded. (reported by
3593 Brian Downing on c.l.l)
3594 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3595 documentation string.
3596 * fixed some bugs revealed by Paul Dietz' test suite:
3597 ** COPY-ALIST now signals an error if its argument is a dotted
3599 ** Condition slots are now accessed more correctly in the presence
3600 of multiple initargs for a given slot.
3601 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3602 exclude restarts of the same name associated with a different
3604 ** DEFCLASS of forward-referenced classes with another
3605 forward-referenced class in the superclasses list no longer
3607 ** Condition slots are now initialized once each, not multiple
3608 times. (thanks to Gerd Moellmann)
3609 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3611 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3612 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3613 arguments contain duplicated elements.
3614 ** RESTART-CASE understands local macros.
3615 ** RESTART-CASE associates exactly its own restarts with a condition.
3616 ** ENDP in safe mode checks its argument to be of type LIST.
3617 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3618 in question is unbound.
3619 ** Optimized MAKE-INSTANCE functions no longer cause internal
3620 assertion failures in the presence of duplicate initargs.
3621 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3622 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3623 propagated even in the ctor optimized implementation of
3625 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3627 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3628 * a better implementation of SXHASH on (simple) bit vectors,
3629 measured both in execution speed and in distribution of results
3630 over the positive fixnums, has been installed. Likewise, a better
3631 implementation of EQUAL for simple bit vectors is now available.
3632 * fixed CEILING optimization for a divisor of form 2^k.
3633 * fixed bug 240 (emitting extra style warnings "using the lexical
3634 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3635 by Antonio Martinez)
3636 * fixed SXHASH, giving different results for NIL depending on type
3637 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3638 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3639 variable. (found by Rolf Wester)
3640 * SBCL does not ignore type declarations for special
3641 variables. (reported by rif on c.l.l 2003-03-05)
3642 * some bug fixes in contrib/sb-aclrepl/
3643 * fixed some bugs revealed by Paul Dietz' test suite:
3644 ** a bug in the CONS type specifier, whereby the CAR and CDR
3645 types got intertwined, has been fixed;
3646 ** the type system is now able to reason about the interaction
3647 between INTEGER and RATIO types more completely;
3648 ** APPEND, [N]REVERSE and NRECONC check that those their
3649 arguments, which must be proper lists, are really so;
3650 ** An array specialized to be unable to hold elements has been
3651 implemented, as required -- yes, really -- by ANSI;
3652 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3653 on malformed property lists;
3655 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3656 * incompatible packaging change: in line with Unix convention,
3657 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3658 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3659 * REQUIRE and PROVIDE are now optionally capable of doing something
3660 useful. See the documentation string for REQUIRE.
3661 * infrastructure for a managed SBCL contrib system: contributed
3662 modules in this release include:
3663 ** the ASDF system definition facility;
3664 ** an interface to the BSD Sockets API;
3665 ** an ACL-like convenience interface to the repl;
3666 (thanks to Kevin Rosenberg)
3667 ** an implementation of ROTATE-BYTE, with efficient implementation
3669 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3670 gives a closer approximation to the right answer than previously.
3671 (thanks to Raymond Toy)
3672 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3673 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3674 optional environment arguments, as required by ANSI.
3675 * fixed bugs in other functions taking environment objects, allowing
3676 calls with an explicit NIL environment argument to be compiled
3678 * fixed bug 228: primary return values from
3679 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3680 COMPILE or FUNCTION.
3681 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3682 :TYPE will no longer signal errors on innocuous objects.
3683 * fixed bug 231b: SETQ is better at respecting type declarations in
3684 the lexical environment.
3685 * fixed a bug in DEFCLASS: classes named by symbols with no or
3686 unprintable packages can now be defined.
3687 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3688 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3689 * fixed compiler failure related to checking types of functions.
3690 (reported by Robert E. Brown)
3691 * the compiler is now much more consistent in its error-checking
3692 treatment of bounding index arguments to sequence functions: in
3693 (SAFETY 3) code, errors will be signalled in almost all cases if
3694 invalid sequence bounding indices are passed to functions defined
3695 by ANSI to operate on sequences.
3696 * fixed a bug in the build procedure: documentation of SBCL-specific
3697 packages is now preserved and available in the final Lisp image.
3698 * lifted FDEFINITION lookup out of loops in the implementation of
3699 many list operations. (thanks to Robert E. Brown)
3700 * fixed a bug in the reader: the #n# reader macro now works for
3701 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3702 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3703 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3704 E. Brown and Tony Martinez respectively)
3705 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3706 SLOT-BOUNDP: in particular, it is now able to optimize them much
3707 better, and is now not vulnerable to having packages renamed.
3708 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3709 always called when a slot is not present in an instance. (thanks
3711 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3712 longer signal an error on unreading a character following EOF on
3713 the previous constituent stream. (thanks to Tony Martinez)
3714 * fixed some bugs revealed by Paul Dietz' test suite:
3715 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3716 not just nonnegative fixnums;
3717 ** the logical bit-array operators such as BIT-AND now accept an
3718 explicit NIL for their "opt-arg" argument (to indicate a
3719 freshly-consed result bit-array);
3720 ** ELT now signals an error on an invalid sequence index in safe
3722 ** the type system is now cleverer about negations of numeric
3723 types, and consequently understands the BIGNUM and RATIO types
3725 ** the type system is now cleverer about the interaction between
3726 INTEGER and RATIO types: while bugs still remain, many more
3727 cases are accurately computed;
3728 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3729 if it is in the last clause;
3730 ** CONSTANTLY now correctly returns a side-effect-free function in
3732 ** DECLARE is no longer treated as a special-operator; in
3733 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3734 * incremented fasl file version number due to the change in the
3735 DEFSTRUCT-SLOT-DESCRIPTION structure.
3737 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3738 * minor incompatible change: code processed by the "interpreter" or
3739 EVAL now has a compilation optimization policy of (DEBUG 2)
3740 (changed from (DEBUG 1)) to improve debuggability of interactive
3741 development, and to allow the use of the debug RETURN command in
3743 * an experimental implementation of the RETURN command for the
3744 debugger has been included. (thanks to Frederik Kuivinen)
3745 * fixed bug 62: constraints were not propagated into a loop.
3746 * fixed bug in embedded calls of SORT (reported and investigated by
3748 * fixed some bugs revealed by Paul Dietz' test suite:
3749 ** printing and reading of arrays with some dimensions having
3750 length 0 (thanks to Gerd Moellmann);
3751 ** BOA constructor with &AUX argument without a default value does
3752 not cause a type error;
3753 ** CONSTANTP now returns true for all self-evaluating objects.
3755 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3756 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3757 accessors that are related by inheritance, as specified in the
3758 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3759 Valtteri Vuorikoski)
3760 * The compiler is now able to inline functions that were defined in
3761 a complex lexical environment (e.g. inside a MACROLET).
3762 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3764 * Support for the upcoming FreeBSD-5.0 release has been included.
3765 (thanks to Dag-Erling Smorgrav)
3766 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3767 effect when it is not in a toplevel context.
3768 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3769 stand a better chance of being correct. (thanks to Gerd
3771 * fixed bug in COERCE, which now signals an error on coercing a
3772 rational to a bounded real type which excludes the expected
3774 * The compiler is now able to derive types more accurately from the
3775 COERCE and COMPILE functions.
3776 * fixed bug 223: functional binding is considered to be constant
3777 only for symbols in the CL package.
3778 * fixed bug 231: SETQ did not check the type of a variable being set
3779 (reported by Robert E. Brown)
3780 * A new optimization for MAKE-INSTANCE has been included, fixing
3781 various bugs (including relating to :ALLOCATION :CLASS slots and
3782 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3784 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3785 ** As required by ANSI, LOOP now disallows anonymous collection
3786 clauses such as COLLECT I in conjunction with aggregate boolean
3787 clauses such as THEREIS (= I 1);
3788 ** LOOP now signals an error when any variable is reused in the
3789 same loop (including the potentially useful construct analogous
3790 to WITH A = 1 WITH A = (1+ A);
3791 ** IT is only a special loop symbol within the first clause of a
3792 conditional loop clause;
3793 ** LOOP with a typed iteration variable over a hashtable now
3794 signals a type error iff it should.
3795 * fixed some other bugs revealed by Paul Dietz' test suite:
3796 ** FILE-STREAM now names the class previously known as FD-STREAM;
3797 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3798 argument) no longer signals an error;
3799 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3800 of the slot symbol, rather than using the current package
3801 ((:CONC-NAME "") continues to intern the slot's name in the
3803 * incremented fasl file version number, because of the incompatible
3804 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3805 of the new implementation of DEFINE-COMPILER-MACRO.
3807 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3808 * Support for building SBCL for MIPS platforms running in
3809 little-endian mode has now been checked in, and basic
3810 functionality on said platforms verified.
3811 * minor incompatible change: PCL now records the pathname of a file
3812 in which methods and the like are defined, rather than its
3814 * minor incompatible change: TRUENAME now considers the truename of
3815 a file naming a directory to be the pathname with :DIRECTORY
3816 component indicating that directory.
3817 * minor incompatible change: a NAMED clause in the extended form of
3818 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3819 reason for the previous behaviour is unclear.
3820 * more systematization and improvement of CLOS and MOP conformance
3821 in PCL (thanks to Gerd Moellman and Pierre Mai):
3822 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3824 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3825 primary methods with no specializers;
3826 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3828 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3829 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3830 FORWARD-REFERENCED-CLASSes; error reporting on
3831 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3833 ** SXHASH on CLOS instances now uses a slot internal to the
3834 instance to return different numbers on distinct instances,
3835 while preserving the same return value through invocations of
3837 ** DEFMETHOD signals errors when methods with longer incongruent
3838 lambda lists are added to generic functions;
3839 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3840 CLASS, as specified in AMOP;
3841 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3842 on the order returned by the primary method for classes of
3843 class STANDARD-CLASS;
3844 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3845 * fixed some bugs shown by Paul Dietz' test suite:
3846 ** DOLIST puts its body in TAGBODY;
3847 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3849 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3850 value producing form;
3851 ** if more variables are given to PROGV than values, extra
3852 variables are bound and made to have no value;
3853 ** NSUBSTITUTE on list arguments gets the right answer with
3855 ** ELT signals an error of type TYPE-ERROR when the index argument
3856 is not a valid sequence index;
3857 ** LOOP signals (at macroexpansion time) an error of type
3858 PROGRAM-ERROR when duplicate variable names are found;
3859 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3860 ** FUNCALL of special-operators now cause an error of type
3862 ** PSETQ now works as required in the presence of side-effecting
3863 symbol-macro places;
3864 ** NCONC accepts any object as its last argument;
3865 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3867 ** loop-for-as-package does not require a package to be explicitely
3869 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3871 * fixed bug 166: compiler preserves "there is a way to go"
3872 invariant when deleting code.
3873 * fixed bug 172: macro lambda lists with required arguments after
3874 &REST arguments now cause an error to be signalled. (thanks to
3876 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3877 bug. (thanks to Matthew Danish)
3878 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3880 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3881 arguments are lexically rebound. (thanks to Gerd Moellmann and
3883 * fixed bug 194: error messages are now more informative when there
3884 is no primary method applicable in a call to a generic
3885 function. (thanks to Gerd Moellmann)
3886 * fixed bug in command line argument checking (thanks to Julian
3888 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3889 (thanks to Matthew Danish)
3890 * incremented fasl file version number, because of the
3891 SXHASH-related changes in the layout of CLOS data structures
3893 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3894 * minor incompatible change: The runtime (the Unix executable named
3895 "sbcl") is now much pickier about the .core files it will load.
3896 Essentially it now requires .core files to descend from the same
3897 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3898 as the runtime does. (The intent is to prevent the crashes which
3899 can occur, and which can even be reported as mysterious failures,
3900 when people patch the sources or change the build parameters
3901 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3902 sbcl and .core files.)
3903 * fixed bug: VALUES-LIST is no longer optimized away.
3904 * fixed bug 142: The FFI conversion of C string values to Lisp
3905 string values no longer conses excessively. (thanks to Nathan
3906 Froyd porting Raymond Toy's fix to CMU CL)
3907 * began to systematize and improve MOP conformance in PCL (thanks to
3908 Nathan Froyd, Gerd Moellman and Pierre Mai):
3909 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3911 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3912 ** FINALIZE-INHERITANCE is now called on class finalization;
3913 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3914 argument precedence order.
3915 * fixed bug 202: The compiler no longer fails on functions whose
3916 derived types contradict their declared type.
3917 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3918 so it can be non-toplevel.
3919 * The fasl file version number has changed (because of the new
3920 implementation of DEFMACRO).
3921 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3922 safe code, that any length requirement by their type-specifier
3923 argument is valid. The exceptions to this are described in bug
3925 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3926 functions now check the types of their inputs as required by ANSI.
3927 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3928 introduced symbol is DECLAREd to be SPECIAL.
3929 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3930 * fixed bug: :COUNT argument to sequence functions may be negative
3931 * fixed bug: body of DO-SYMBOLS may contain declarations
3932 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3933 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3934 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3935 symbol macro only once
3936 * fixed printing of call frame when argument list is unavailable
3937 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3938 * compiler no longer signals WARNING on unknown keyword
3941 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3942 * A beta-quality port to the mips architecture running Linux,
3943 based on the old CMUCL backend, has been made. It has been tested
3944 on a big-endian kernel, and works sufficiently well to be able to
3945 rebuild itself; it has not been tested in little-endian mode.
3946 * fixed an inconsistency between gencgc.c and purify.c which made
3947 dumping/loading .core files unreliable
3948 * fixed bug 120a: The compiler now deals correctly with IFs where
3949 the consequent is the same as the alternative, instead of
3950 misderiving the return type. (thanks to Alexey Dejneka)
3951 * fixed bug 113: Logical pathnames are now dumpable (the logical
3952 host is resolved at load-time, throwing an error if it is not
3954 * fixed bug 174: FORMAT's error message is slightly clearer when a
3955 non-printing character is used in a format directive.
3956 * fixed several bugs in compiler checking of type declarations, i.e.
3957 violations of the Python "declarations are assertions" principle
3958 (thanks to Alexey Dejneka)
3959 * fixed several bugs in PCL's error checking (thanks to Gerd
3961 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3963 * fixed bug in compilation of functions as first class values
3964 (thanks to Antonio Martinez-Shotton)
3965 * The compiler's handling TYPE-ERRORs which it can prove will
3966 inevitably happen at runtime has been cleaned up and corrected
3967 in several ways. (thanks to Alexey Dejneka)
3968 * improved argument type checking for various basic arithmetic
3969 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3970 lavished on them in the past that they can be compiled in many
3971 ways in different special cases
3972 * fixed bug 181: compiler checks validity of user supplied type
3974 * cleaned up code flushing in optimization: Function calls which
3975 should signal errors for safety purposes (e.g. which ANSI says
3976 should signal errors when their arguments are of incorrect type)
3977 are no longer optimized away.
3978 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3979 * incremented fasl file version number, because changes in the
3980 implementation of sequence functions like COERCE caused
3981 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3982 in old inline expansions) to become undefined. (Actually these
3983 changes were later undone, so we might very well be binary
3984 compatible with 0.7.7 after all, but leaving the version number
3985 incremented seemed like the simplest and most conservative
3988 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3989 * An alpha-quality port to the parisc architecture running Linux,
3990 based on the old CMUCL backend, has been made. This, even more so
3991 than the other backends, should be considered still a work in
3992 progress; known problems include that the Linux kernel in 64-bit
3993 mode does not propagate the correct sigcontext structure to
3994 userspace, and consequently SBCL on a parisc64 kernel will not
3996 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3997 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3998 suppressed.) Also now that the compiler is looking at declarations
3999 in the environment, it checks optimization declarations as well,
4000 and suppresses inlining when (> DEBUG SPEED).
4001 * More fixes have been made to treatment of floating point exception
4002 treatment and other Unix signals. In particular, floating point
4003 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4004 * The detection and handling of control stack exhaustion (infinite
4005 or very deeply nested recursion) has changed. Stack exhaustion
4006 detection is now done by write-protecting pages at the OS level
4007 and applies at all optimization settings; when found, a
4008 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4009 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4010 be caught using IGNORE-ERRORS.
4011 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4012 correctly when transforming recursive LABELS functions to LETs.
4013 (thanks to Alexey Dejneka)
4014 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4015 that are names of constants or global variables.
4016 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4017 alien routines with docstrings.
4018 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4019 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4021 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4022 (thanks to Eric Marsden)
4023 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4024 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4025 * Bug fix: The SPARC backend can now compile functions involving
4026 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4027 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4028 to a functions expecting a PATHNAME-DESIGNATOR.
4029 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4030 lambda lists. (thanks to Alexey Dejneka)
4031 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4032 functions so that EXPORTing the name of the class doesn't cause
4033 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4034 to Antonio Martinez for reporting this)
4035 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4036 constant-folded without failing an assertion. (thanks to Einar
4037 Floystad Dorum for reporting this)
4038 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4039 types are now dealt with more correctly by the compiler.
4040 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4041 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4042 behaviour analogous to RENAME-FILE. This puts its behaviour more
4043 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4045 * The fasl file version number has changed again. (because of the
4046 bug fix involving the names of PCL MAKE-INSTANCE functions)
4048 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4049 * bug fix: Floating point exceptions are treated much more
4050 consistently on the x86/Linux and PPC/Linux platforms.
4051 * Array initialization with :INITIAL-ELEMENT is now much faster for
4052 cases when the compiler cannot open code the array creation, but
4053 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4054 array accesses have also seen a speed increase.
4055 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4056 specified. (This was at the root of some bad interactions between
4057 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4059 * bug fix: Internal error arguments for undefined functions are now
4060 computed correctly on the PPC/Linux platform.
4061 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4062 Raymond Toy's patch for CMU CL)
4063 * Support for the Solaris 9 operating environment has been included
4064 (thanks to Daniel Merritt)
4065 * A very ugly but hopefully complete draft of the missing FFI chapter
4066 of the manual has been created by reformatting the corresponding
4067 CMU CL manual chapter into (currently very ugly and incoherent)
4068 DocBook and bringing it up to date for SBCL behavior. Thus, the
4069 manual is now essentially complete, at least by my extreme
4070 once-and-only-once standards, whereby it's acceptable to refer to
4071 the doc strings of SB-EXT functions as the primary documentation.
4072 * The fasl file version number has changed again, due to cleanup of
4073 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4074 is no longer a static symbol.)
4076 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4077 * SBCL now builds with OpenMCL (version 0.12) as the
4078 cross-compilation host; also, more progress has been made toward
4079 bootstrapping under CLISP.
4080 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4082 * bug 158 fixed: The compiler can now deal with integer loop
4083 increments different from 1; fixing this turned out also to fix
4085 * bug 169 fixed: no more bogus warnings about using lexical bindings
4086 despite the presence of perfectly good SPECIAL declarations (thanks
4087 to David Lichteblau)
4088 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4089 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4090 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4092 * bug 180 fixed: Method combination specifications no longer ignore
4093 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4094 * bug fix: Structure type predicate functions now check their argument
4095 count as they should.
4096 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4097 correctly. (thanks to Pierre Mai)
4098 * minor incompatible change: The --noprogrammer option is deprecated
4099 in favor of the new --disable-debugger option, which is very similar.
4100 (The major difference is that it takes effect at a slightly different
4101 time at startup, causing handling of errors in --sysinit and
4102 --userinit files will be affected differently.) The
4103 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4104 been added to allow this functionality to be controlled from ordinary
4105 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4106 maintainers, who might want to run non-interactive scripts to
4107 build SBCL cores which will later be used interactively.)
4108 * minor incompatible change: The LOAD function no longer, when given
4109 a wild pathname to load, loads all files matching that pathname.
4110 Instead, an error of type FILE-ERROR is signalled.
4112 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4113 * bug 147 fixed: The compiler preserves its block link/count
4114 invariants more correctly now so that it doesn't crash. (thanks
4116 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4118 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4119 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4120 no-value-for-this-character as NIL (as specified by ANSI).
4121 * HOST-NAMESTRING on physical pathnames now returns a string that is
4122 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4123 (thanks to Christophe Rhodes)
4124 * The Alpha port handles icache flushing more correctly. (thanks to
4126 * More progress has been made toward bootstrapping under CLISP. (thanks
4127 to Christophe Rhodes)
4128 * The fasl file format has changed again, because dynamic loading
4129 on OpenBSD (which has non-ELF object files) motivated some cleanups
4130 in the way that foreign symbols are transformed and passed around.
4131 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4132 is no longer treated as whitespace by the reader, but instead as
4133 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4134 |A
\7fB|, instead of A as it used to.
4136 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4137 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4138 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4139 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4140 this as of 0.7.1.45, but was left out of the previous news section
4141 (thanks to Dan Barlow)
4142 * SBCL now runs on the Solaris operating system on SPARC architectures
4143 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4144 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4145 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4146 * SPARC backend cleanups, allowing builds of cores optimized for V8
4147 and V9 SPARCS, and also emission of code targeted to a particular
4148 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4150 * SBCL is closer to bootstrapping under CLISP, thanks to various
4151 fixes by Christophe Rhodes.
4152 * The fasl file format has changed again, to allow the compiler's
4153 INFO database to support symbol macros.
4154 * The user manual (in doc/) is formatted into HTML more nicely.
4155 (thanks to coreythomas)
4156 * The system is smarter about SUBTYPEP relationships, especially
4157 those involving NOT types (including types such as ATOM which are
4158 represented internally using NOT types). Thus SUBTYPEP is less
4159 likely to return (VALUES NIL NIL) in general, and in particular
4160 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4162 * The fasl file format has changed again, because the internal
4163 representation of types now includes a new slot to support the new
4164 SUBTYPEP-of-NOT-types logic.
4165 * (not a change in the main branch of SBCL, but a related prototype
4166 which can hopefully be merged into the main branch of SBCL in the
4167 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4168 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4169 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4170 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4171 dispatch macro character combinations. (thanks to Alexey Dejneka)
4172 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4173 that superficially look like logical namestrings correctly.
4174 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4176 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4177 default supplied-p) for &optional and &key arguments. (thanks to
4180 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4181 * incompatible change: The compiler is now less aggressive about
4182 tail call optimization, doing it only when (> SPACE DEBUG) or
4183 (> SPEED DEBUG). (This is an incompatible change because there are
4184 programs which relied on the old CMU-CL-style behavior to optimize
4185 away their unbounded recursion which will now die of stack overflow.)
4186 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4187 for non-GENCGC systems has been increased to 20M (since that
4188 seems much closer to the likely performance optimum for modern
4189 systems than the old 4M value was)
4190 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4191 and *DEBUG-PRINT-LEVEL*
4192 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4193 of CMU CL's support for SPARC, and various endianness and other
4194 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4195 * new syntactic sugar for the Unix command line: --load foo.bar is now
4196 an alternate notation for --eval '(load "foo.bar")'.
4198 ** The system now detects stack overflow and handles it gracefully,
4199 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4200 optimization settings. (This is a good thing in general, and
4201 its introduction in this version should be particularly timely
4202 for anyone whose code fails because of suppression of tail
4204 ** The system now hunts for the C variable "environ" in a more
4205 devious way, to avoid segfaults when the C library version differs
4206 between compile time and run time. (thanks to Christophe Rhodes)
4207 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4208 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4209 ** The compiler no longer issues bogus style warnings for undefined
4210 classes in the same source file as the DEFCLASSes which defined
4211 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4213 ** fixes in CONDITION class precedence list for undefined function
4214 errors (thanks to Alexei Dejneka)
4215 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4216 correctly. (thanks to Dan Barlow)
4217 ** portability fixes aiming at bootstrapping under CLISP (thanks
4218 to Dave McDonald and Christophe Rhodes)
4219 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4220 ** fixes in type translation and and type inference (thanks to
4222 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4223 ** various fixes in the new ports (thanks to Dan Barlow)
4224 * several changes related to debugging:
4225 ** suppression of tail recursion, as noted above
4226 ** stack overflow detection, as noted above
4227 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4228 is now the default. (For some time encapsulation has been more
4229 reliable than the breakpoint-based :ENCAPSULATE NIL
4230 implementation, at least on X86 systems; and I just noticed that
4231 encapsulation also seems closer to the spirit of the ANSI
4234 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4236 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4237 up properly again. (There was a packaging bug in 0.7.0 which
4238 left their definitions in SB-SYS::LOAD-FOREIGN and
4239 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4240 vital for most things which interface to C-level interfaces,
4241 like extensions working with sockets or databases or
4242 Perl-compatible regexes or whatever, and the need to fix
4243 this bug is the main reason that 0.7.1 was released so
4245 ** DEFGENERIC is now choosier about the methods it redefines, so that
4246 reLOADing a previously-LOADed file containing DEFGENERICs does
4247 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4248 cycle now works as it should. (thanks to Alexey Dejneka)
4249 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4250 fixed by Christophe Rhodes. (He actually submitted this patch
4251 months ago, and I delayed until after 0.7.0.)
4252 ** Bug 111 (internal compiler confusion about runtime checks on
4253 FUNCTION types) was fixed by Alexey Dejneka.
4254 * Some internal cleanups (getting rid of variables which aren't
4255 needed now that the byte interpreter is gone) caused the fasl
4256 file format number to change again.
4258 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4259 * major incompatible change: The default fasl file extension, i.e. the
4260 default extension for files produced by COMPILE-FILE, has changed
4261 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4263 ** There are many changes in the implementation of the compiler.
4264 SBCL is now essentially a compiler-only implementation of ANSI
4265 Common Lisp. EVAL still "interprets" a few special cases, but
4266 almost all the interesting cases are handled by creating
4267 a LAMBDA expression, calling COMPILE on it, then calling
4268 FUNCALL on the result.
4269 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4270 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4271 Since the code is newer, there might still be some new bugs
4272 (though not as many as before Martin Atzmueller's fixes:-). But
4273 the new code is substantially simpler and clearer, and hopefully
4274 any remaining bugs will be simpler, less fundamental, and more
4275 fixable then the bugs in the old code.
4276 ** The revised compiler is still a little unsteady on its feet.
4278 *** The debugging information it produces (particularly the names
4279 of FUNCTION objects) is sometimes much less useful than what
4280 the old compiler produced.
4281 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4282 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4283 within a MACROLET) has been temporarily weakened.
4284 ** There are new compiler optimizations for various functions:
4285 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4286 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4287 *** the math functions TRUNCATE, FLOOR, and CEILING
4288 *** the function-of-all-trades COERCE
4289 Mostly these should be transparent, but there's one
4290 potentially-annoying problem (bug 117): when the compiler
4291 inline-expands a function and does type analysis on the result,
4292 it can create control paths which have type mismatches, and
4293 when it can't prove that those control paths aren't taken,
4294 it will issue WARNINGs about the type mismatches. This is
4295 a particular problem in practice for the new sequence functions.
4296 It's not clear how this should be fixed, and for now, a
4297 workaround is given in the entry for 117 in the BUGS file.
4298 ** (Because of the interaction between the two previous items --
4299 occasional inlining problems and new inline expansions -- some
4300 of the new sequence function optimizations won't really kick in
4301 completely until debugging information, and then inlining, are
4302 straightened out in some future version.)
4303 * minor incompatible changes:
4304 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4305 DIRECTORY no longer implicitly promotes NIL slots of its
4306 pathname argument to :WILD. In particular, when you ask for the
4307 contents of a directory (which you used to be able to do without
4308 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4309 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4310 ** changes in behavior that ANSI explicitly defines to be
4311 implementation dependent:
4312 *** The new compiler-only implementation still conforms with ANSI,
4313 but acts a little different than before. Besides the obvious
4314 changes in performance tradeoffs (that the cost per form passed
4315 to EVAL has gone up, and the cost per form executed by EVAL
4316 has gone down), the behavior of the system changes a little
4317 because there are no longer any interpreted function objects.
4318 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4319 e.g. doing COMPILE on the output of interactive DEFUN is
4321 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4323 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4324 has changed from (:CL) to NIL.
4325 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4326 e.g. #\Newline and #\Tab, don't have names specified in the
4327 ANSI Common Lisp standard, is now based on their ASCII symbolic
4328 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4329 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4330 are no longer used for output.
4331 ** changes in internal implementation constants:
4332 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4333 4 million. (If your application spends a lot of time GCing and
4334 you have a lot of RAM, you might want to experiment with
4335 increasing it even more.)
4336 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4337 However, almost all old code should still continue to work without
4338 immediate update, as SB-C-CALL is now a (deprecated) nickname
4340 ** Old operator names in the style DEF-FOO are now deprecated in
4341 favor of new corresponding names DEFINE-FOO, for consistency with
4342 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4343 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4344 internal symbols, but a few supported extensions like
4345 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4346 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4347 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4348 etc. as you get deeper into recursive calls to the debugger
4349 command loop, instead of the old "5]", "5]]", "5]]]"
4350 sequence. (I was motivated to do this when squabbles between
4351 ILISP and SBCL left me very deeply nested in the debugger. In the
4352 short term, this change will probably provoke more ILISP/SBCL
4353 squabbles, but hopefully it will be an improvement in the long run.)
4354 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4355 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4356 function, since declaiming return types involving aliens is
4357 (1) annoyingly messy to do by hand and (2) vital to efficient
4358 compilation of code which calls such functions.
4359 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4360 longer reexported by the SB-EXT package. They're solely useful
4361 for alien code, so it seems more logical that you should get
4362 them from the SB-ALIEN package, not in SB-EXT.
4363 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4364 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4365 features. Instead, the code that they used to control is always
4366 built into the system.
4367 * many other bug fixes
4368 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4369 advantage of the new EVAL-WHEN stuff and to clean them up in
4370 general, and they are now more ANSI-compliant in a number of
4371 ways. Martin Atzmueller is responsible for a lot of this.
4372 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4374 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4375 *** correct ERROR type for various file operations
4376 *** some fixes for Lisp streams
4377 *** DEFMETHOD syntax checking
4378 *** changing old weird representation of debug information as
4379 strings (which, among their other deficiencies, don't transform
4380 correctly when you rename packages, and don't change their
4381 print representation when you change things like *PACKAGE*
4382 and *PRINT-LENGTH*) to symbols and lists of symbols
4383 He also made several improvements and fixed several bugs in DESCRIBE.
4384 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4386 *** misbehavior of WRITE-STRING/WRITE-LINE
4387 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4388 and several other LOOP problems as well
4389 *** DIRECTORY when similar filenames are present
4390 *** DEFGENERIC with :METHOD options
4391 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4392 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4393 *** argument ordering in FIND with :TEST option
4394 *** mishandled package designator argument in APROPOS-LIST
4395 *** various problems in the backquote readmacro
4396 *** a bug in APROPOS
4397 *** probably some others that I'm not describing very well here,
4398 since the CVS log documents them by reference to sbcl-devel
4399 messages, and the SourceForge archives aren't working well.:-(
4400 ** Dan Barlow improved the Alpha port (and is making progress on the
4401 PPC port, for those of you who think different).
4402 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4403 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4404 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4405 continues to work on the SPARC port (for those of you in a position
4406 to look down upon our little PC-compatible boxes from a great height).
4407 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4408 and uses that copy, rather than the current dynamic value, when
4409 it's trying to decide whether to truncate output. Thus e.g.
4410 (let ((*print-lines* 50))
4411 (pprint-logical-block (stream nil)
4413 (let ((*print-lines* 8))
4414 (print (aref possiblybigthings i) stream)))))
4415 should now truncate the logical block only at 50 lines, instead of
4416 often truncating it at 8 lines, as it did before.
4417 * The doc/cmucl/ directory, containing old CMU CL documentation
4418 from the time of the fork, is no longer part of the base system.
4419 SourceForge has shut down its anonymous FTP service, and with it
4420 my original plan for distributing the old CMU CL documentation
4421 there. For now, if you need these files you can download an old
4422 SBCL source release and extract them from it.
4423 * The fasl file version number changed again, for dozens of reasons,
4424 some of which are apparent above.
4426 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4427 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4428 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4429 patch, so that DISASSEMBLE output is much nicer.
4430 * The code in the SB-PROFILE package now seems reasonably stable.
4431 I still haven't decided what the final interface should look like
4432 (I'd like PROFILE to interact cleanly with TRACE, since both
4433 facilities use function encapsulation) but if you have a need
4434 for profiling now, you can probably use it successfully with
4435 the current CMU-CL-style interface.
4436 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4437 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4438 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4439 link now returns the dangling link itself, and for similar
4440 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4441 link itself. (In these cases the old code signalled an error and
4442 looped endlessly, respectively.) Thus, DIRECTORY now works even
4443 in the presence of dangling and cyclic symbolic links.
4444 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4445 is now a supported extension again, since the consensus on
4446 sbcl-devel was that it can be useful for ordinary development
4447 work, not just for debugging SBCL itself.
4448 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4449 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4450 that currently-defined functions might be redefined later with
4451 different return types.
4452 * Hash tables can be printed readably, as inspired by CMU CL code
4453 of Eric Marsden and SBCL code of Martin Atzmueller.
4454 * better error handling in CLOS method combination, thanks to
4455 Martin Atzmueller porting Pierre Mai's CMU CL patches
4456 * more overflow fixes for >16Mbyte I/O buffers
4457 * A bug in READ has been fixed, so that now a single Ctrl-D
4458 character suffices to cause end-of-file on character streams.
4459 In particular, now you only need one Ctrl-D at the command
4460 line (not two) to exit SBCL.
4461 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4463 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4464 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4465 does the right thing.
4466 * The implementation of some type tests, especially for CONDITION
4467 types, is now tidier and maybe faster, due to CMU CL code
4468 originally by Douglas Crosher, ported by Martin Atzmueller.
4469 * Some math functions have been fixed, and there are new
4470 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4471 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4472 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4473 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4474 likely to be built into sbcl-0.7.0.)
4475 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4476 CL, ported to SBCL by Martin Atzmueller)
4477 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4478 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4479 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4480 * There's a new slam.sh hack to shorten the edit/compile/debug
4481 cycle for low-level changes to SBCL itself, and a new
4482 :SB-AFTER-XC-CORE target feature to control the generation of
4483 the after-xc.core file needed by slam.sh.
4484 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4485 COMPILE-FILE is no longer supported, so that now every function
4486 gets an entry point, so that block compilation looks a little
4487 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4488 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4489 returns the number of bytes consed since the system started,
4490 rather than the number consed since the first time the function
4491 was called. (The new definition parallels ANSI functions like
4492 CL:GET-INTERNAL-RUN-TIME.)
4493 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4494 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4495 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4496 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4497 * Fasl file version numbers are now independent of the target CPU,
4498 since historically most system changes which required version
4499 number changes have affected all CPUs equally. Similarly,
4500 the byte fasl file version is now equal to the ordinary
4503 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4504 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4505 is no longer recognized. I apologize for this, because it was
4506 listed in SB-EXT as a supported extension, but I found that
4507 its existing behavior was poorly specified, as well as incorrectly
4508 specified, and it looked like too much of a mess to straighten it
4509 out. I have enough on my hands trying to get ANSI stuff to work..
4510 * many patches ported from CMU CL by Martin Atzmueller, with
4511 half a dozen bug fixes in pretty-printing and the debugger, and
4512 half a dozen others elsewhere
4513 * fixed bug 13: Floating point infinities are now supported again.
4514 They might still be a little bit flaky, but thanks to bug reports
4515 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4516 as flaky as they were.
4517 * The --noprogrammer command line option is now supported. (Its
4518 behavior is slightly different in detail from what the old man
4519 page claimed it would do, but it's still appropriate under the
4520 same circumstances that the man page talks about.)
4521 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4522 are now supported, and enabled by default. Thus, the compiler can
4523 handle many floating point and complex operations much less
4524 inefficiently. (Thus e.g. you can implement a complex FFT
4526 * The compiler now detects type mismatches between DECLAIM FTYPE
4527 and DEFUN better, and implements CHECK-TYPE more correctly, and
4528 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4529 thanks to patches from Martin Atzmueller.
4530 * various fixes to make the cross-compiler more portable to
4531 ANSI-conforming-but-different cross-compilation hosts (notably
4532 Lispworks for Windows, following bug reports from Arthur Lemmens)
4533 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4534 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4535 fixed thanks to Pierre Mai's CMU CL patches.
4536 * fixes to keep the system from overflowing internal counters when
4537 it tries to use i/o buffers larger than 16M bytes
4538 * fixed bug 45a: Various internal functions required to support
4539 complex special functions have been merged from CMU CL sources.
4540 (When I was first setting up SBCL, I misunderstood a compile-time
4541 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4542 * improved support for type intersection and union, fixing bug 12
4543 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4544 more obscure bugs as well
4545 * some steps toward byte-compiling non-performance-critical
4546 parts of the system, courtesy of patches from Martin Atzmueller
4547 * Christophe Rhodes has made some debian packages of sbcl at
4548 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4549 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4550 stable, but are nonetheless usable. When he's ready, I'd be happy
4551 to add them to the SourceForge "File Releases" section. (And if
4552 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4553 * new fasl file format version number (because of changes in
4554 internal representation of (OR ..) types to accommodate the new
4555 support for (AND ..) types, among other things)
4557 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4558 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4560 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4562 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4563 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4564 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4565 * DESCRIBE now works on structure objects again.
4566 * Most function call argument type mismatches are now handled as
4567 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4568 know whether the function will be redefined before the call is
4569 executed. (The compiler could flag local calls with full WARNINGs,
4570 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4571 it doesn't keep track of enough information to know whether calls
4572 are local in this sense.)
4573 * Compiler output is now more verbose, with messages truncated
4574 later than before. (There should be some supported way for users
4575 to override the default verbosity, but I haven't decided how to
4576 provide it yet, so this behavior is still controlled by the internal
4577 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4578 src/compiler/ir1util.lisp.)
4579 * Fasl file format version numbers have increased again, because
4580 support for the Gray streams extension changes the layout of the
4581 system's STREAM objects.
4582 * The Gray subclassable streams extension now works, thanks to a
4583 patch from Martin Atzmueller.
4584 * The full LOAD-FOREIGN extension (not just the primitive
4585 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4586 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4587 but like most other programs, it defaults to copying the Unix
4588 environment from the original process instead of starting the
4589 new process in an empty environment.
4590 * Extensions which manipulate the Unix environment now support
4591 an :ENVIRONMENT keyword option which doesn't smash case or
4592 do other bad things. The CMU-CL-style :ENV option is retained
4593 for porting convenience.
4594 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4595 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4597 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4599 * A patch from Martin Atzmueller seems to have solved the SIGINT
4600 problem, and as far as we know, signal-handling now works cleanly.
4601 (If you find any new bugs, please report them!)
4602 * The system no longer defaults Lisp source file names to types
4603 ".l", ".cl", or ".lsp", but only to ".lisp".
4604 * The compiler no longer uses special default file extensions for
4605 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4606 seems to expect a single default extension for all compiled code,
4607 and there's no compelling reason to try to stretch the standard
4608 to allow two different extensions.) Instead, byte-compiled files
4609 default to the same extension as native-compiled files.
4610 * Fasl file format version numbers have increased again, because
4611 a rearrangement of internal implementation packages made some
4612 dumped symbols in old fasl files unreadable in new cores.
4613 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4614 many fewer weird special cases.
4615 * Bug #17 (differing COMPILE-FILE behavior between logical and
4616 physical pathnames) has been fixed, and some related misbehavior too,
4617 thanks to a patch from Martin Atzmueller.
4618 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4619 by Tim Moore, ported to SBCL by Martin Atzmueller.
4620 * Martin Atzmueller fixed several filesystem-related problems,
4621 including bug #36, in part by porting CMU CL patches, which were
4622 written in part by Paul Werkowski.
4623 * More compiler warnings in src/runtime/ are gone, thanks to
4624 more patches from Martin Atzmueller.
4625 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4628 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4630 * DESCRIBE now works on CONDITION objects.
4631 * The debugger now handles errors which arise when trying to print
4632 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4634 * The build system now uses an additional file, customize-target-features.lisp,
4635 to allow local modifications to the target *FEATURES* list. (The point of
4636 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4637 debugging features enabled, without having to worry about propagating it
4638 into everyone's system when I do a "cvs update".) When no
4639 customize-target-features.lisp file exists, the target *FEATURES* list
4640 should be constructed the same way as before.
4641 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4642 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4643 warn about behavior which is undefined under the ANSI spec. Note: This
4644 is specified by ANSI, but it's not very popular with programmers.
4645 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4646 macro in the SBCL sources for an example of a workaround which you
4647 might use to make portable ANSI-standard code which does what you want.
4648 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4649 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4650 when it's used as a non-toplevel form. (This is required in order
4651 to implement the DEFCONSTANT-EQX macro.)
4652 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4653 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4654 funny things, due to bugs in the implementation of EVAL-WHEN
4655 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4656 non-toplevel DEFCONSTANTs are uncommon.)
4657 * The core file version number and fasl file version number have been
4658 incremented, because the old noncompliant DEFCONSTANT behavior involved
4659 calling functions which no longer exist, and because I also took the
4660 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4661 * fixed bug 1 (error handling before read-eval-print loop starts), and
4662 redid debugger restarts and related debugger commands somewhat while
4664 ** The QUIT debugger command is gone, since it did something
4665 rather different than the SB-EXT:QUIT command, and since it never
4666 worked properly outside the main toplevel read/eval/print loop.
4667 Invoking the new TOPLEVEL restart provides the same functionality.
4668 ** The GO debugger command is also gone, since you can just invoke
4669 the CONTINUE restart directly instead.
4670 ** The TOP debugger command is also gone, since it's redundant with the
4671 FRAME 0 command, and since it interfered with abbreviations for the
4673 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4675 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4676 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4677 some porting work by Martin Atzmueller)
4678 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4679 with a boatload of patches which he ported to SBCL. Now that those
4681 ** The system tries to make sure that its low-priority messages
4682 are prefixed by semicolons, to help people who like to use
4683 syntax highlighting in their ILISP buffer. (This patch
4684 was originally due to Raymond Toy.)
4685 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4686 patches originally written by Raymond Toy.
4687 ** The compiler understands coercion between single-value and
4688 multiple-VALUES type expressions better, getting rid of some very
4689 weird behavior, thanks to patches originally by Robert MacLachlan
4690 and Douglas Crosher.
4691 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4692 lambda lists, thanks to a patch originally by Pierre Mai.
4693 ** The system no longer bogusly warns about "abbreviated type
4695 ** The compiler gets less confused by inlining and RETURN-FROM,
4696 thanks to some patches originally by Tim Moore.
4697 ** The system no longer hangs when dumping circular lists to fasl
4698 files, thanks to a patch originally from Douglas Crosher.
4699 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4700 undefined function error.
4701 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4702 in structure slot initforms) for now, documented workaround instead:-|
4703 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4704 * fixed bug 5: added stubs for various Gray stream functions called
4705 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4706 installed, at least appropriate type errors are generated
4707 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4708 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4709 consistently in DEFMETHOD forms.
4710 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4711 it doesn't seem to affect SBCL after all
4712 * The C runtime system now builds with better optimization and many
4713 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4715 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4717 * The system is now under CVS at SourceForge (instead of the
4718 CVS repository on my home machine).
4719 * The new signal handling code has been tweaked to treat register
4720 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4721 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4722 downstream, e.g. in debug-int.lisp, has implicit dependencies
4723 on the unsignedness of integer representation of machine words,
4724 and that caused the system to bomb out with infinite regress
4725 when trying to recover from type errors involving signed values,
4726 e.g. (BUTLAST '(1 2 3) -1).)
4727 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4728 (This was one of the bugs Peter Van Eynde reported back in July.)
4729 * The system now uses code inspired by Colin Walters' O(N)
4730 implementation of MAP (from the cmucl-imp@cons.org mailing
4731 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4732 inline the MAP operation, and there is more than one
4733 sequence argument to the MAP call (so that it can't just
4734 do ETYPECASE once and for all based on the type of the
4735 single sequence argument). (The old non-inline implementation
4736 of the general M-argument sequence-of-length-N case required
4737 O(M*N*N) time when any of the sequence arguments were LISTs.)
4738 * The QUIT :UNIX-CODE keyword argument has been renamed to
4739 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4740 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4742 * Raymond Wiker's patches to port dynamic loading from Linux to
4743 FreeBSD have been added.
4744 * The BUGS file is now more nearly up to date, thanks in large part
4745 to Martin Atzmueller's review of it.
4746 * The debugger now flushes standard output streams before it begins
4747 its output ("debugger invoked" and so forth).
4748 * The core version number and fasl file version number have both
4749 been incremented, because of incompatible changes in the layout
4751 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4752 used to not be called for a saved Lisp image.)
4753 * Martin Atzmueller's version of a patch to fix a compiler crash,
4754 as posted on sbcl-devel 13 September 2000, has been installed.
4755 * Instead of installing Martin Atzmueller's patch for the
4756 compiler transform for SUBSEQ, I deleted the compiler transform,
4757 and transforms for some similar consing operations.
4758 * A bug in signal handling which kept TRACE from working on OpenBSD
4760 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4761 away by constant folding
4762 * The system now defines its address space constants in one place
4763 (in the Lisp sources), and propagates them automatically elsewhere
4764 (through GENESIS and the sbcl.h file). Therefore, patching the
4765 address map is less unnecessarily tedious and error-prone. The
4766 Lisp names of address space constants have also been systematized.
4767 * CVS tags like dollar-Header-dollar have been removed from
4768 the sources, because they have never saved me trouble and
4769 they've been source of trouble working with patches and other
4770 diff-related operations.
4771 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4772 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4774 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4776 * The system has been ported to OpenBSD.
4777 * The system now compiles with a simple "sh make.sh" on the systems
4778 that it's supported on. I.e., now you no longer need to tweak
4779 text in the target-features.lisp-expr and symlinks in src/runtime/
4780 by hand, the make.sh takes care of it for you.
4781 * The system is no longer so grossly inefficient when compiling code
4782 involving vectors implemented as general (not simple) vectors (VECTOR T),
4783 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4784 which dares to use the various sequence functions on non-simple
4785 vectors, takes less of a performance hit.
4786 * There is now a primitive type predicate VECTOR-T-P
4787 to test for the (VECTOR T) type, so that e.g.
4788 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4789 can now be compiled with some semblance of efficiency. (The old code
4790 turned the type declaration into a full call to %TYPEP at runtime!)
4791 * AREF on (VECTOR T) is still not fast, since it's still compiled
4792 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4793 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4794 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4795 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4796 without making full calls to SUBTYPEP at runtime.
4797 (Some analogous efficiency issues for non-simple vectors specialized to
4798 element types other than T, or for non-simple multidimensional arrays,
4799 have not been addressed. They could almost certainly be handled the
4800 same way if anyone is motivated to do so.)
4801 * The changes in array handling break binary compatibility, so
4802 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4803 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4804 instead of (VALUES T T).
4805 * By following the instructions that Dan Barlow posted to sbcl-devel
4806 on 2 July 2000, I was able to enable primitive dynamic object
4807 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4808 functionality is not implemented (since it calls ld to resolve
4809 library references automatically, requiring RUN-PROGRAM for its
4810 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4811 try to resolve library references) is now supported.
4812 * The system now flushes the standard output streams when it terminates,
4813 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4814 them at several other probably-convenient times, e.g. in each pass of
4815 the toplevel read-eval-print loop, and after evaluating a form given
4816 as an "--eval" command-line option. (These changes were motivated by a
4817 discussion of stream flushing issues on cmucl-imp in August 2000.)
4818 * The source transform for TYPEP of array types no longer assumes
4819 that an array whose element type is a not-yet-defined type
4820 is implemented as an array of T, but instead punts, so that the
4821 type will be interpreted at runtime.
4822 * There is now some support for cross-compiling in make.sh: each of
4823 the phases of make.sh has its own script. (This should be transparent
4824 to people doing ordinary, non-cross-compile builds.)
4825 * Since my laptop doesn't have hundreds of megabytes of memory like
4826 my desktop machine, I became more motivated to do some items on
4827 my to-do list in order to reduce the size of the system a little:
4828 ** Arrange for various needed-only-at-cold-init things to be
4829 uninterned after cold init. To support this, those things have
4830 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4831 symbols with such names are now uninterned after cold init).
4832 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4833 fasl files for cold load.
4834 ** Remove the old compiler structure pooling code (which used to
4835 be conditional on the target feature :SB-ALLOC) completely.
4836 ** Redo the representation of some data in cold init to be more compact.
4837 (I also looked into supporting byte compiled code at bootstrap time,
4838 which would probably reduce the size of the system a lot, but that
4839 looked too complicated, so I punted for now.)
4840 * The maximum signal nesting depth in the src/runtime/ support code has
4841 been reduced from 4096 to 256. (I don't know any reason for the very
4842 large old value. If the new smaller value turns out to break something,
4843 I'll probably just bump it back up.)
4844 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4846 * Many, many bugs reported by Peter Van Eynde have been added to
4847 the BUGS list; some have even been fixed.
4848 * While enabling dynamic object file loading, I tried to make the
4849 code easier to understand, renaming various functions and variables
4850 with less ambiguous names, and changing some function calling
4851 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4852 * While trying to figure out how to do the OpenBSD port, I tried to
4853 clean up some of the code in src/runtime/. In particular, I dropped
4854 support for non-POSIX signal handling, added various comments,
4855 tweaked the code to reduce the number of compilation warnings, and
4856 renamed some files to increase consistency.
4857 * To support the new automatic configuration functionality in make.sh,
4858 the source file target-features.lisp-expr has been replaced with the
4859 source file base-target-features.lisp-expr and the machine-generated
4860 file local-target-features.lisp-expr.
4861 * fixed a stupid quoting error in make.sh so that using CMU CL
4862 "lisp -batch" as cross-compilation host works again
4864 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4866 * DESCRIBE no longer tries to call itself recursively to describe
4867 bound/fbound values, so that it no longer fails on symbols which are
4868 bound to themselves (like keywords, T, and NIL).
4869 * DESCRIBE now works on generic functions.
4870 * The printer now prints less-screwed-up representations of closures
4871 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4872 * A private symbol is used instead of the :EMPTY keyword previously
4873 used to mark empty slots in hash tables. Thus
4874 (DEFVAR *HT* (MAKE-HASH-TABLE))
4875 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4876 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4877 now does what ANSI says that it should. (You can still get
4878 similar noncompliant behavior if bang on the hash table
4879 implementation with all the symbols you get back from
4880 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4881 This breaks binary compatibility, since tests for equality to
4882 :EMPTY are wired into things like the macroexpansion of
4883 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4885 * There's now a minimal placeholder implementation for CL:STEP,
4886 as required by ANSI.
4887 * An obscure bug in the interaction of the normal compiler, the byte
4888 compiler, inlining, and structure predicates has been patched
4889 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4890 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4892 * Missing ordinary arguments in a macro call are now detected even
4893 when the macro lambda list contains &KEY or &REST.
4894 * The debugger no longer complains about encountering the top of the
4895 stack when you type "FRAME 0" to explicitly instruct it to go to
4896 the top of the stack. And it now prints the frame you request even
4897 if it's the current frame (instead of saying "You are here.").
4898 * As specified by ANSI, the system now always prints keywords
4899 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4901 * The default initial SIZE of HASH-TABLEs is now smaller.
4902 * Type information from CLOS class dispatch is now propagated
4903 into DEFMETHOD bodies, so that e.g.
4904 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4906 is now basically equivalent to
4907 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4908 (DECLARE (TYPE SINGLE-FLOAT X))
4910 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4911 operation, without having to do run-time type dispatch.
4912 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4913 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4914 * Since I don't seem to be making big file reorganizations very often
4915 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4916 is overflowing my ability to conveniently back them up), I've finally
4917 checked the system into CVS. (The CVS repository is on my home system,
4918 not at SourceForge -- putting it on SourceForge might come later.)
4919 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4920 high-level GC-NOTIFY-FOO functions send their output. (There's
4921 still very little control of where low-level verbose GC functions
4922 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4923 less than it used to -- the GC-NOTIFY-FOO functions are now under
4924 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4925 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4926 in only one place in the source code, and propagates it automatically
4927 everywhere that it's needed. Thus e.g. when I bump the version from
4928 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4929 * The C source files now include boilerplate legalese and documentation
4930 at the head of each file (just as the Lisp source files already did).
4931 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4932 to his page will be replaced with a link to his new CLiki service.
4934 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4936 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4937 * The build process now looks for GNU make under the default name "gmake",
4938 instead of "make" as it used to. If GNU make is not available as "gmake"
4939 on your system, you can change this default behavior by setting the
4940 GNUMAKE environment variable.
4941 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4942 can build without error under CMU CL.
4944 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4946 * There is now a partial SBCL user manual (with some new text and some
4947 text cribbed from the CMU CL manual).
4948 * The beginnings of a profiler have been added (starting with the
4949 CMU CL profiler and simplifying and cleaning up). Eventually the
4950 main interface should be through the TRACE macro, but for now,
4951 it's still accessed through vaguely CMU-CL-style functions and macros
4952 exported from the package SB-PROFILE.
4953 * Some problems left over from porting CMU CL to the new
4954 cross-compilation bootstrap process have been cleaned up:
4955 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4956 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4957 part when getting rid of the compiler *BACKEND* stuff.)
4958 ** The value of *NULL-TYPE* was screwed up, because it was
4959 being initialized before the type system knew the final
4960 definition of the 'NULL type. This screwed up several key
4961 optimizations in the compiler, causing inefficiency in all sorts
4962 of places. (I found it because I wanted to understand why
4963 GET-INTERNAL-RUN-TIME was consing.)
4964 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4965 PROCLAIM FTYPE information. Unfortunately this broke binary
4966 compatibility again, since now the forms output by DEFGENERIC
4967 to refer to functions which didn't exist in 0.6.3.
4968 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4969 can use the new (as of 0.6.3) transform for SOME into MAP into
4971 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4972 values to (INTEGER 0 1000000), so that the time code will no longer
4973 occasionally get blown up by Linux returning 1000000 microseconds
4974 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4975 its output conform to the ANSI spec. (Alas, this makes its output
4976 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4977 * A full call to MAP NIL with a single sequence argument no longer conses.
4978 * fixes to problems pointed out by Martin Atzmueller:
4979 * The manual page no longer talks about multiprocessing as though
4980 it were currently supported.
4981 * The ILISP support patches have been removed from the distribution,
4982 because as of version 5.10.1, ILISP now supports SBCL without us
4983 having to maintain patches.
4984 * added a modified version of Raymond Toy's recent CMU CL patch for
4985 EQUALP comparison of HASH-TABLE
4987 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4989 * The system still can't cross-compile itself with
4990 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4991 entails), but at least it can compile more of itself that way
4992 than it used to be able to, and various buglets which were uncovered
4993 by trying to cross-compile itself that way have now been fixed.
4994 * This release breaks binary compatibility again. This time
4995 at least I've incremented the FASL file format version to 2, so that the
4996 problem can be detected reliably instead of just causing weird errors.
4997 * various new style warnings:
4998 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4999 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5000 ** using the lexical binding of a variable named in the *FOO* style
5001 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5002 as specified by ANSI.
5003 * *RANDOM-STATE* is no longer automatically initialized from
5004 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5005 default behavior of the system is to repeat its behavior every time
5006 it's run. If you'd like to change this behavior, you can always
5007 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5008 old convention there was no comparably easy way to get the system to
5009 repeat its behavior every time it was run.
5010 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5011 FTYPE declarations has been removed, in favor of their ANSI
5012 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5013 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5014 the types of their sequence arguments can be determined at compile time.
5015 This is done through a new open code expansion for MAP which eliminates
5016 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5017 argument types can be determined at compile time.
5018 * The optimizer now transforms COERCE into an identity operation when it
5019 can prove that the coerced object is already of the correct type. (This
5020 can be a win for machine generated code, including the output of other
5021 optimization transforms, such as the MAP transform above.)
5022 * Credit information has been moved from source file headers into CREDITS.
5023 * Source file headers have been made more standard.
5024 * The CASE macro now compiles without complaining even when it has
5027 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5029 * (Note that the way that the PCL macroexpansions were rewritten
5030 to accommodate the change in DEFGENERIC below breaks binary
5031 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5032 not run under sbcl-0.6.2. Once we get out of alpha releases,
5033 i.e. hit release 1.0.0, we'll probably try to maintain binary
5034 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5035 and sbcl-1.4.4. Until then, however, it might be fairly common
5036 for maintenance releases to break binary compatibility.)
5037 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5039 * The reporting of unhandled signals has been changed to print some
5040 explanatory text as well as the report form. (Previously only
5041 the report form was printed.)
5042 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5043 it defines, so that the compiler no longer issues undefined function
5044 warnings for compiled-but-not-yet-loaded generic functions.
5045 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5046 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5047 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5048 section of the ANSI spec are supported.
5049 * The "" nickname for the "KEYWORD" package has been removed.
5050 The reader still handles symbol tokens which begin with a package marker
5051 as keywords, but it doesn't expose its mechanism for doing so in the
5052 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5053 * The system now issues STYLE-WARNINGs for contradictory TYPE
5054 proclamations. (Warnings for contradictory FTYPE proclamations would
5055 be nice too, but those can't be done usefully unless the type system
5056 is made smarter about FUNCTION types.)
5057 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5058 systematized, so that "*target-*.lisp is supposed to exist only on the
5059 target and imply that there's a related file which exists on the
5060 host, and *host-*.lisp is supposed to exist only on the host and imply
5061 that there's a related file which exists on the target. This involves a
5062 lot of renaming. Hopefully the acute confusion caused by the renaming
5063 will be justified by the reduction in chronic confusion..
5064 ** runtime-type.lisp -> early-target-type.lisp
5065 ** target-type.lisp -> late-target-type.lisp
5066 ** early-host-format.lisp -> early-format.lisp
5067 ** late-host-format.lisp -> late-format.lisp
5068 ** host-error.lisp -> misc-error.lisp
5069 ** early-error.lisp -> early-target-error.lisp
5070 ** late-error.lisp -> late-target-error.lisp
5071 ** host-defboot.lisp -> early-defboot.lisp
5072 ** code/misc.lisp -> code/target-misc.lisp
5073 ** code/host-misc.lisp -> code/misc.lisp
5074 ** code/numbers.lisp -> code/target-numbers.lisp
5075 ** code/early-numbers.lisp -> numbers.lisp
5076 ** early-host-type.lisp -> early-type.lisp
5077 ** late-host-type.lisp -> late-type.lisp
5078 ** host-typep.lisp -> typep.lisp
5079 ** load.lisp -> target-load.lisp
5080 ** host-load.lisp -> load.lisp
5081 ** host-disassem.lisp -> disassem.lisp
5082 ** host-insts.lisp -> insts.lisp
5083 ** byte-comp.lisp -> target-byte-comp.lisp
5084 ** host-byte-comp.lisp -> byte-comp.lisp
5085 ** host-signal.lisp -> signal.lisp
5086 ** host-defstruct.lisp -> defstruct.lisp
5087 ** late-target-type.lisp -> deftypes-for-target.lisp
5088 Furthermore, several other previously target-only files foo.lisp (e.g.
5089 hash-table.lisp and random.lisp) have been split into a target-and-host
5090 foo.lisp file and a target-only target-foo.lisp file, with their key type
5091 definitions in the target-and-host part, so that the cross-compiler will
5092 know more about target types.
5093 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5094 gone away. In their place are various *BACKEND-FOO* variables
5095 corresponding to the slots of the old structure.
5096 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5097 into the target SBCL has been fixed.
5098 * The chill.lisp system for loading cold code into a running SBCL
5100 * Support for the CMU CL "scavenger hook" extension has been removed.
5101 (It was undocumented and unused in the CMU CL sources that SBCL was
5102 derived from, and stale in sbcl-0.6.1.)
5103 * Various errors in the cross-compiler type system were detected
5104 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5105 (enabling various consistency checks). Many of them were fixed,
5106 but some hard problems remain, so the compiler is back to
5107 running without *TYPE-SYSTEM-INITIALIZED* for now.
5108 * As part of the cross-compiler type system cleanup, I implemented
5109 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5110 * I have started adding UNCROSS calls throughout the type system
5111 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5112 on cross-compiler input files will be able to go away, and various
5114 * CONSTANTP now returns true for quoted forms (as explicitly required
5117 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5119 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5120 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5121 (MAKE-LIST -1). In the longer term, it ought to become true
5122 that declarations are assertions even at SAFETY 1. For now, it's not
5123 quite true even at SAFETY 3, but it's at least more nearly true..
5124 (Note that this change seems to increases the size of the system by
5125 O(5%) and to decrease the speed of the compiler by 20% or more.)
5126 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5127 for the problem of printing dozens of lines of distracting information
5128 about low-level system machinery as part of the top stack frame
5129 on entry to the debugger when an undefined function was called.
5130 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5131 is not reset to COMMON-LISP-USER.
5132 * Compilation of stuff related to dyncount.lisp has been made conditional
5133 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5134 smaller. The various dyncount-related symbols have been moved into
5135 a new "SB-DYNCOUNT" package.
5136 * tty-inspect.lisp has been renamed to inspect.lisp.
5137 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5138 feature has gone away. (When we eventually port to other flavors of
5139 libc and/or Unix, we'll try to make the differences between flavors
5140 invisible at the user level.)
5141 * Various other *FEATURES* tags, and/or their associated conditionals,
5142 have been removed if obsolescent, or given better documentation, or
5143 sometimes given more-mnemonic names.
5145 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5147 * tidied up "make.sh" script
5148 * tidied up system directory structure
5149 * better "clean.sh" behavior
5150 * added doc/FOR-CMUCL-DEVELOPERS
5151 * many many small tweaks to output format, e.g. removing possibly-confusing
5152 trailing #\. character in DESCRIBE-INSTANCE
5153 * (EQUALP #\A 'A) no longer signals an error.
5154 * new hashing code, including EQUALP hashing
5155 * tidied up Lisp initialization and toplevel
5156 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5157 * command line argument processing
5158 * added POSIX-GETENV function to deal with Unix-ish environment variables
5159 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5160 terminating SBCL on EOF
5161 * non-verbose GC by default
5162 * There is no more "sbcl" shell script; the sbcl file is now the C
5163 runtime executable (just like CMU CL).
5164 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5166 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5167 symbol and package information as Lisp native symbol and package objects
5168 instead of strings naming symbols and strings naming packages. This way,
5169 whenever packages are renamed (as in warm init), debug information is
5170 transformed along with everything else.
5171 * tweaked the optimization policy declarations which control the building
5172 of SBCL itself. Now, among other things, the system no longer saves
5173 source location debugging information. (This helps two problems at once
5174 by reducing SBCL size and by keeping SBCL from trying to look for its
5175 sources -- which may not exist -- when reporting errors.)
5176 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5177 debugging and testing purposes
5178 * cleaned up printing, making the printer call PRINT-OBJECT for
5179 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5180 methods, giving nearly-ANSI behavior
5181 * converted almost all special variables to use *FOO* naming convention
5182 * deleted PARSE-TIME functionality, since it can be done portably
5183 * moved some files out of cold init into warm init
5184 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5186 * regularized formatting of source files
5187 * added an install.sh script
5188 * fixed ridiculous memory usage of cross-compiler by making
5189 compiler/alloc.lisp not try to do pooling unless it can hook
5190 itself into the GC of the cross-compilation host. Now the system
5191 builds nicely on my old laptop.
5192 * added :SB-ALLOC in target-features.lisp-expr
5193 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5194 was not implemented)
5195 * re-did condition handling and note reporting in the compiler. Notes
5196 are no longer handled by signalling conditions. Style warnings
5197 and warnings are handled more correctly and reported in such a way
5198 that it's easy to find one or the other in your output (so that you
5199 can e.g. figure out which of many problems caused COMPILE-FILE to
5201 * changed the severity of several compiler warnings from full WARNING
5202 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5203 compiler note reporting so that it doesn't use the condition system
5204 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5205 COMPILE-FILE command)
5206 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5207 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5208 no longer supported, since their implementation was deeply intertwingled
5209 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5210 * removed bogus "support" for compiler macros named (SETF FOO), and
5211 removed the compiler macro for SETF INFO (but only after making a fool
5212 of myself on the cmucl-imp mailing list by posting a bogus patch for
5213 DEFINE-COMPILER-MACRO..)
5214 * Compiled files containing forms which have side effects on the Lisp
5215 reader (such as DEFPACKAGE forms) are now handled more correctly.
5216 (Compiler queuing of top level lambdas has been suppressed by setting
5217 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5218 * deleted various currently-unused source files, e.g. gengc.lisp. They
5219 may be added back at some point e.g. when porting to other architectures,
5220 but until they are it's distracting to distribute them and to try to
5222 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5223 there were so many of them they're just distractions, and UNCROSS is
5224 known to be able to handle the current sources
5225 * moved PROFILE functionality into TRACE, so that it will be clear
5226 how the wrapping and unwrapping of functions when you profile them
5227 interacts with the wrapping and unwrapping of functions when you
5228 trace them. (Actually, the functionality isn't there yet, but at least
5229 the interface specification is there. Hopefully, the functionality will
5230 arrive with some future maintenance release.)
5231 * removed host-oops.lisp
5232 * changed signature of QUIT function to allow UNIX-CODE argument
5233 * fixed READ-SEQUENCE bug
5234 * tweaked verbose GC output so that it looks more like the progress
5235 output that ANSI specifies for functions like LOAD
5236 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5237 * added <http://sbcl.sourceforge.com> to the banner information printed by