1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.30:
3 * improvement: stack allocation is should now be possible in all nested
4 inlining cases: failure to stack allocate when equivalent code is manually
5 open coded is now considered a bug.
6 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
7 be used to output toplevel compile-time effects into a separate .CFASL
9 * optimization: multiplication and division of single- and double-floats
10 with constant +/-one has been optimized.
11 * optimization: multiplication of single- and double-floats floats by
12 constant two has been optimized.
13 * bug fix: moderately complex combinations of inline expansions could
14 be miscompiled if the result was declared to be dynamic extent.
15 * bug fix: in some cases no compiler note about failure to stack allocate
16 was emitted, even if the objects were in fact heap allocated.
17 * bug fix: minor violation of "otherwise inaccessible" rule for stack
18 allocation could cause objects users might reasonably expect to
19 be heap allocated to be stack allocated.
21 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
22 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
23 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
24 of SB-THREAD:THREAD-ERROR-THREAD.
25 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
26 * new feature: docstrings for local and anonymous functions are no longer
27 discarded. (thanks to Leslie Polzer)
28 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
29 values in other threads.
30 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
31 about object allocation.
32 * optimization: division of a real float by a complex float is implemented
33 with a specialised code sequence.
34 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
35 keywords is an order of magnitude faster.
36 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
37 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
38 methods, and similarly for non-standard metaclass classes as long as there
39 are no methods additional on MAKE-INSTANCE.
40 * optimization: more efficient type-checks for FIXNUMs when the value
41 is known to be a signed word on x86 and x86-64.
42 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
43 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
45 * optimization: compiler is smarter about delegating argument type checks to
47 * optimization: several character functions are now compiled somewhat more
48 efficiently. (reported by Lynn Quam)
49 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
50 * improvement: less unsafe constant folding in floating point arithmetic,
51 especially for mixed complex/real -float operations.
52 * optimization: constant double and single floats are stored in native
53 unboxed format on x86[-64].
54 * optimization: smarter code for arithmetic operations with constant floats,
55 complex floats, or integers on x86[-64].
56 * optimization: smarter code for conjugate/multiplication of float complexes
57 and abs/negate of floats on x86-64.
58 * optimization: more efficient complex float and real float operations on
60 * improvement: complex float division is slightly more stable.
61 * improvement: DESCRIBE output has been reworked to be easier to read and
62 contains more pertinent information.
63 * improvement: failure to provide requested stack allocation compiler notes
64 provided in all cases (requested stack allocation not happening without a
65 note being issued is now considered a bug.)
66 * bug fix: SB-POSIX exports the documented types and functions
67 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
68 types. (reported by "abhi")
69 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
70 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
71 (thanks to Paul Khuong)
72 * bug fix: looping around HANDLER-CASE could silently consume stack space
73 on each iteration. (reported by "foobar")
74 * bug fix: better error signalling when calls to functions seeking elements
75 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
76 (reported by Tobias Rittweiler)
77 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
78 directory components now works as it used to. (various prolems reported by
79 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
80 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
81 (reported by Elliot Slaughter, thanks to Stas Boukarev)
82 * bug fix: bogus undefined variable warnings from fopcompiled references to
83 global variables. (thanks to Lars Rune Nøstdal)
84 * bug fix: foreign function names should now appear in backtraces on
85 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
86 * bug fix: SETF compiler macro documentation strings are not discarded
88 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
89 (thanks to Alex Plotnick)
90 * bug fix: SLEEP accepts large integer arguments, truncating them to
91 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
92 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
93 * bug fix: compiler notes for expensive slot type checks could be emitted
94 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
96 changes in sbcl-1.0.29 relative to 1.0.28:
97 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
98 https://bugs.launchpad.net/sbcl
99 Bugs can be reported directly there, or by sending email to
100 sbcl-bugs@lists.sourceforge.net
101 (no subscription required.)
102 * minor incompatible change: under weak type checking policy integer
103 types are weakened less aggressively.
104 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
105 allowed to return, which causes SBCL to quit with exit status 0. Previously
106 if the function returned with a small integer return value, that value
107 was accidentally reused as the exit status.
108 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
109 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
110 :HASH-FUNCTION argument. Refer to user manual for details.
111 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
113 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
114 microseconds since the Unix epoch on all platforms.
115 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
116 allows the compiler to safely elide boundedness checks for special
118 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
119 the symbol, prohibits both lexical and dynamic binding. This is mainly an
120 efficiency measure for threaded platforms, but also valueable in
122 * new feature: UNC pathnames are now understood by the system on Windows.
123 * optimization: the compiler uses a specialized version of FILL when the
124 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
126 * optimization: accesses to potentially non-simple arrays where element type
127 is known are 50% faster.
128 * optimization: compiler now generates faster array typechecking code.
129 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
131 * optimization: multidimensional array accesses in the absence of type
132 information regarding array rank are approximately 10% faster due to
133 open coding of ARRAY-RANK.
134 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
135 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
137 * optimization: result of call to VECTOR can now be stack allocated.
138 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
139 as long as the resulting array is one-dimensional and has a known
140 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
141 length of the list matches the known length of the vector does not
142 allocate the list as an intermediate step. Ditto for VECTOR and simple
144 * optimization: MAKE-ARRAY can now stack allocate in the presence of
145 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
146 known element type, and is known to be simple and one dimensional.
147 * improvement: SBCL now emits a compiler note where stack allocation was
148 requested but could not be provided (not in all cases, unfortunately)
149 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
150 * improvement: pretty-printing loop has been implemented properly. (thanks
151 to Tobias Rittweiler)
152 * documentation: CLOS slot typechecing policy has been documented.
153 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
154 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
155 pointer, leading to memory faults. (thanks to Bart Botta)
156 * bug fix: better floating point exception handling on x86/OpenBSD.
157 (thanks to Josh Elsasser)
158 * bug fix: exit status from QUIT when called under --script was lost
159 (reported by Hubert Kauker)
160 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
161 same implementation of FILL to initialize the array, even if a more
162 efficient one was available (reported by Stas Boukarev, thanks to
164 * bug fix: potential miscompilation of array stack allocation on x86 and
165 x86-64. (reported by Time Tossavainen)
166 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
167 result in their subforms being treated as top level forms. (reported by
169 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
170 than a machine register could leave garbage in the high bits of the
171 result register (bug 316325).
172 * bug fix: disable address space randomization Linux/x86-64 as well,
173 not just x86-64. (reported by Ken Olum)
174 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
175 generate incorrect code.
176 * bug fix: #201; type inference for CONS and ARRAY types could derive
177 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
178 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
179 could not be assigned to or bound with PROGV. (reported by Lorenz
181 * bug fix: the value of CL:- in the inspector was the previous expression
182 evaluated rather than the expression being evaluated.
183 * bug fix: constants can no longer be locally declared special.
184 * bug fix: signals delivered to threads started from foreign land (read:
185 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
186 thread by blocking all signals and resignalling.
187 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
188 from :INITFORM, if any.
190 changes in sbcl-1.0.28 relative to 1.0.27:
191 * a number of bugs in cross-compilation have been fixed, with the ultimate
192 result that building under (at least) clisp should be much more reliable.
193 * minor incompatible changes: echo-streams now propagate unread-char to the
194 underlying input stream, and no longer permit unreading more than one
196 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
197 frames, allowing for instance more reliable backtraces.
198 * improvement: the debugger REPL can now reference lexical variables
199 by name directly for code compiled with (DEBUG 3).
200 * improvement: errors from malformed declarations now have better source
201 paths associated with them. (thanks to Tobias Rittweiler)
202 * optimization: faster local calls on x86/x86-64
203 * bug fix: some error messages for out-of-bound array indexes confused the
204 index and the bound. (thanks to Stas Boukarev)
205 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
207 * bug fix: running regressions tests in shells without OSTYPE set now works.
208 (reported by Harald Hanche-Olsen)
209 * bug fix: more robust static space exhaustion signalling from
210 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
211 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
212 docstring away instead of storing it under names such as (LAMBDA (X)).
213 (reported by Leslie Polzer)
214 * bug fix: timers could go off in the wrong order, be delayed indefinitely
215 (thanks to Ole Arndt for the patch)
216 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
217 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
218 potentially-invalid effective methods in its cache.
219 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
220 instances as well (thanks to Paul Khuong)
221 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
222 SB-POSIX:WAITPID and their C equivalents.
223 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
225 changes in sbcl-1.0.27 relative to 1.0.26:
226 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
227 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
228 * improvement: the system either recovers from stack exhaustion or dies
229 properly as opposed to leaving the user uncertain of whether the handler
230 trampled on some random memory next to the stack or having to rely on
231 --lose-on-corruption (which is still a good idea to use in production
232 because stack exhaustion can happen in signal handlers which will likely
234 * bug fix: fix gc related interrupt handling bug on ppc (regression from
235 1.0.25.37, reported by Harald Hanche-Olsen)
236 * bug fix: work around signal delivery bug in darwin (regression from
237 1.0.25.44, reported by Sidney Markowitz)
238 * bug fix: fix ERROR leaking memory (reported by David Thompson)
240 changes in sbcl-1.0.26 relative to 1.0.25:
241 * incompatible change: an interruption (be it a function passed to
242 INTERRUPT-THREAD or a timer function) runs in an environment where
243 interrupts can be enabled. The interruption can use
244 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
245 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
246 potentially running out of stack. Keep in mind that in the absence
247 of WITHOUT-INTERRUPTS some potentially blocking operation such as
248 acquiring a lock can enable interrupts.
249 * incompatible change: GC-OFF and GC-ON are removed, as they were
250 always unsafe. Use WITHOUT-GCING instead.
251 * new feature: runtime option --disable-ldb
252 * new feature: runtime option --lose-on-corruption to die at the
253 slightest hint of possibly non-recoverable errors: running out of
254 memory, stack, alien stack, binding stack, encountering a memory
255 fault, etc. In the absence of --lose-on-corruption a warning is
257 * enhancement: detect binding stack exhaustion
258 * enhancement: detect alien stack exhaustion on x86/x86-64
259 * improvement: generally more stable and reliable interrupt handling
260 * improvement: there is a per thread interruption queue,
261 interruptions are executed in order of arrival
262 * improvement: a repeating timer reschedules itself when the it has
263 finished, but expiration times are spaced equally. If an
264 expiration time is in the past it will trigger after a short grace
265 period that may give a chance to other things to run.
266 * optimization: slightly faster gc on multithreaded builds
267 * optimization: faster WITHOUT-GCING
268 * bug fix: when JOIN-THREAD signals an error, do it when not holding
269 important locks so that the debugger/handler doesn't produce
270 recursive errors or deadlock.
271 * bug fix: real-time signals are not used anymore, so no more
272 hanging when the system wide real-time signal queue gets full.
273 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
275 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
276 * bug fix: fix random memory faults related to interrupts on alpha
277 * bug fix: fix random memory faults related to interrupts on sparc
278 * bug fix: fix deadlocks related to starting threads
279 * bug fix: fix deadlines on locks on futex platforms
280 * bug fix: restore errno in signal handlers
281 * bug fix: fix deadlocks related to hash tables
282 * bug fix: fix deadlocks in pcl
284 changes in sbcl-1.0.25 relative to 1.0.24:
285 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
286 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
287 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
288 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
289 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
290 better name and does not return values so stale on multiprocessor systems.
291 Also, HOLDING-MUTEX-P was added for about the only sane usage of
293 * improvement: unithread builds keep track of MUTEX-VALUE.
294 * improvement: reading from a TWO-WAY-STREAM does not touch the output
295 stream anymore making it thread safe to have a concurrent reader and
296 a writer, for instance, in a pipe.
297 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
298 arguments, making compiler-macros for SETF-functions able to inspect
299 their constant arguments.
300 * improvement: COMPILE-FILE reports times with millisecond accuracy
301 (thanks to Luis Oliveira)
302 * optimization: CHAR-CODE type derivation has been improved, making
303 TYPEP elimination on subtypes of CHARACTER work better. (reported
304 by Tobias Rittweiler, patch by Paul Khuong)
305 * bug fix: setting alien structure fields of type struct by value now
306 computes the right offset for the memory copy.
307 * bug fix: compilation problem involving inlined calls to aliens with
308 result type VOID. (reported by Ken Olum)
309 * bug fix: #235a; sequential inline expasion in different policies no
310 longer reuses the functional from the previous expansion site.
311 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
312 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
313 * bug fix: named ENUMs in multiply-referenced alien record types no longer
314 cause an implied type redefinition. Regression from 1.0.21.29.
315 * bug fix: sign-extension of small signed return values now works with C
316 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
317 * improvements to the Windows port:
318 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
319 Westfold, thanks to Rudi Schlatte)
321 changes in sbcl-1.0.24 relative to 1.0.23:
322 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
323 vector of a multidimensional SIMPLE-ARRAY.
324 * new feature: the system now signals a continuable error if standard
325 readtable modification is attempted. (thanks to Tobias Rittweiler)
326 * new feature: DIRECTORY has been extended with a non-standard keyword
327 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
328 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
329 has been robustified and documented better. (thanks to Robert Goldman)
330 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
331 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
332 * tradeoff: constant FORMAT control strings are now compiled unless
333 SPACE > SPEED (previously only when SPEED > SPACE.)
334 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
336 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
338 * bug fix: lexical type declarations are now correctly reported by
339 SB-CLTL2. (reported by Larry D'Anna)
340 * bug fix: STRING-TO-OCTETS did not handle :START properly when
341 using UTF-8 as external format. (thanks to Luis Oliveira)
342 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
343 are signalled correctly. (thanks to Stas Boukarev)
344 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
345 designator. (thanks to Tobias Rittweiler)
346 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
347 designator, and returns T instead of the function. (thanks to
349 * bug fix: direct superclasses of STANDARD-CLASS and
350 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
351 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
352 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
353 when no class with the named slot yet exists no longer causes a
354 compile-time style-warning.
355 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
356 in safe code. (reported by Didier Verna)
357 * bug fix: #430; nested structure constructors can stack allocate.
358 * bug fix: on some 64-bit platforms dynamic space size was truncated
359 to #xffff0000 bytes. (reported by Benjamin Lambert)
360 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
361 REPL unusable. (reported by Daniel Herring)
362 * bug fix: return values of READ-SEQUENCE did not take :START into
363 account on file streams, regressions since 1.0.12.22. (reported by
364 Thomas Russ, patch by Paul Khuong)
365 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
366 method specializer used to confuse permuation vector optimization.
367 * bug fix: system inserted bogus implicit type declarations for local
368 special variables in DEFMETHOD bodies.
369 * bug fix: #354; duplicated frames in backtraces due to
370 non-tail-call-optimized XEPs to functions with return type NIL
372 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
373 initializes structure object slots according to DEFSTRUCT initforms,
374 and DEFSTRUCT forms :INCLUDEind structure classes defined using
375 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
376 (reported by Bruno Haible and Stephen Wilson)
377 * bug fix: #395; fill-pointer output streams used now support
378 element-type BASE-CHAR as well.
379 * bug fix: compiler error when attempting to derive return value of
380 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
382 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
384 * bug fix: Mac OS X binaries should now be portable between Leopard
387 changes in sbcl-1.0.23 relative to 1.0.22:
388 * enhancement: when disassembling method functions, disassembly
389 for the associated fast function is also produced.
390 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
392 * optimization: printing with *PRINT-PRETTY* true is now more
393 efficient as long as the object being printed doesn't require
394 special handling by the pretty printer.
395 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
396 now interact correctly with type declarations.
397 * partial bug fix: PCL detects infinite recursion during wrapper
398 validation. (thanks to Attila Lendvai)
399 * bug fix: #426; nested function calls are inlined properly.
400 Previously if FOO was an inline function, in calls of the form
401 (FOO (FOO ...)) the outer call was not inlined.
402 * bug fix: long long arguments passed in registers to alien
403 functions on PowerPC Linux and NetBSD are now handled correctly
404 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
406 changes in sbcl-1.0.22 relative to 1.0.21:
407 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
408 for the shared object in the current directory, but passes the native
409 namestring of the designated pathname to the operation system's shared
410 object loading function as-it.
411 * minor incompatible change: --disable-debugger toplevel option now takes
412 effect before processing of initialization files and --eval or --load
414 * new feature: new commandline argument: --script, which supports
415 shebang lines. See documentation for details. (based on work by
417 * new feature: SAVE-LISP-AND-DIE can save current values of
418 --dynamic-space-size and --control-stack-size in the executable core,
419 causing it to skip normal runtime option processing. See documentation
420 for details. (thanks to Zach Beane)
421 * enhancement: inoccous calls to EVAL or generic functions dispatching
422 on subclasses of eg. STREAM no longer cause compiler notes to appear.
423 * enhancement: the system no longer resignals errors from --load and
424 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
425 associated with the original error to be lost. (thanks to Ariel
427 * enhancement: :DONT-SAVE keyword argument has been added to
428 LOAD-SHARED-OBJECT for controlling interaction with
429 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
430 the effects of an earlier LOAD-SHARED-OBJECT call.
431 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
432 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
433 provided. (reported by Cedric St-Jean)
434 * bug fix: circularity handling in the reader did not treat raw
435 structure slots correctly. (reported by Cedric St-Jean)
436 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
437 file descriptors when there were none.
438 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
439 was broken. (reporteed by Willem Broekema)
440 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
441 pathnames without a directory.
442 * bug fix: COMPILE-FILE did not warn about undefined variable
443 references at toplevel, and LOAD of the resulting fasl did
445 * bug fix: functions with non-required arguments used to end up with
446 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
447 * bug fix: redefining a function with non-required arguments didn't
448 update the system's knowledge about its call signature properly.
449 * bug fix: fixed #431; incompatible alien record type redefinitions
450 are detected and handled. (reported by Neil Haven)
451 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
452 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
454 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
455 after alien stack frames.
456 * bug fix: strings passed to mk{s,d}temp lacked null termination
458 changes in sbcl-1.0.21 relative to 1.0.20:
459 * new feature: the compiler is able to track the effective type of a
460 generic function across method addition and removal.
461 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
462 appropriately typed structure slots without locking.
463 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
464 information like those gathered by TIME using a programming-friendly
466 * new feature: TIME reports time taken even if the form performs a
467 non-local transfer of control.
468 * enhancement: reduced conservativism on GENCGC platforms: on
469 average 45% less pages pinned (measured from SBCL self build).
470 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
471 mutate constant symbols or violate declaimed type of the symbol.
472 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
473 sleeping on the semaphore in heavily contested semaphores.
474 * bug fix: semaphores and condition variables were not interrupt
476 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
477 owned by other threads anymore.
478 * bug fix: FIND on lists called KEY outside the specified
479 subsequence. (reported by budden)
480 * bug fix: LOG doesn't use single-float intermediate results when
481 given mixed integer and double-float arguments, leading to better
482 precision. (reported by Bob Felts)
483 * bug fix: LOG with base zero returned values of inconsistent type.
485 changes in sbcl-1.0.20 relative to 1.0.19:
486 * minor incompatible change: OPTIMIZE qualities
487 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
488 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
489 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
490 * documentation: some slot access efficiency guidelines have been
491 added to the user manual.
492 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
493 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
494 as ASSOC and MEMEBER.
495 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
496 to more efficient EQ-comparison versions more often.
497 * optimization: enhanced derivation of DOLIST iteration variable type
499 * optimization: constant folding of simple (LIST ...) forms as DOLIST
501 * optimization: runtime lookup of function definitions can be
502 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
503 * optimization: compiler is able to derive the return type of
504 (AREF (THE STRING X) Y) as being CHARACTER.
505 * optimization: CLRHASH on empty hash-tables no longer does pointless
506 work. (thanks to Alec Berryman)
507 * optimization: REPLACE deftransforms don't punt when :START1 or
509 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
510 no longer emits a code deletion note. (reported by Andrew
512 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
513 functions with an odd number of &OPTIONAL arguments, a &REST
514 argument, and one or more &KEY arguments at the call site.
515 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
516 arguments appeared at call sites as well.
517 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
518 READ-LINE &co can no longer read from them afterwards. (reported
520 * bug fix: fixed #427: unused local aliens no longer cause compiler
521 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
523 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
524 alien-stack leakage. (reported by Andy Hefner)
525 * bug fix: PROGV signals an error when an attempt to violate declared
526 type of a variable or bind a constant is made.
527 * bug fix: SET signals an error when an attempt to violate declared
528 type of a variable is made.
529 * bug fix: restart computation during the execution of a restart
530 test function no longer causes infinite recursion. (reported by
532 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
533 signals an error. (thanks to Pierre Mai)
534 * bug fix: EXPORT left symbol unexported in conflict situations.
535 (thanks to Michael Weber)
536 * bug fix: correctly handle name conflicts involving CL:NIL.
537 (thanks to Michael Weber)
538 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
539 conflicts arising from USEing package with conflicting symbols
540 correctly. (thanks to Michael Weber)
542 changes in sbcl-1.0.19 relative to 1.0.18:
543 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
544 warnings that go otherwise unhandled will be muffled if they are
545 of the type that's the value of this variable.
546 * optimization: stack allocation is slightly more efficient on x86
548 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
549 where a raw slot always is initialized using the initform whose
550 type is not know sufficiently well a compile-time are now compiled
551 correctly. (reported by John Morrison)
552 * bug fix: compiler no longer makes erronous assumptions in the
553 presence of non-foldable SATISFIES types.
554 * bug fix: stack analysis missed cleanups of dynamic-extent
555 arguments in non-let-converted calls to local functions.
556 * improvements to the Windows port:
557 ** adjusted address spaces for building on both Win32 and
558 Win64. (thanks for John Connors)
559 * fixed some bugs revealed by Paul Dietz' test suite:
560 ** interval arithmetic during type derivation used inexact integer
561 to single-float coercions.
562 ** arithmetic operations involving large integers and single
563 floats give the same results in compiled and interpreted code.
564 ** deriving the result type of COERCE no longer signals an error
565 if the derived type of the second argument is a MEMBER type
566 containing invalid type specifiers.
567 ** ADJOIN with constant NIL as second argument works correctly.
568 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
570 changes in sbcl-1.0.18 relative to 1.0.17:
571 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
572 profiles only the current thread.
573 * minor incompatible change: changes to SYMBOL-VALUE of constants
574 defined with DEFCONSTANT now signal an error.
575 * enhancement: SB-SPROF now has support for wallclock profiling,
576 and is also able to profile specific threads. REPORT output
577 has also additional sorting options.
578 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
580 * optimization: structure allocation has been improved
581 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
582 ** out of line constructors are ~10% faster.
583 ** inline constructors are ~15% faster.
584 ** inline constructors are capable of dynamic extent allocation
585 (generally on x86 and x86-64, in some cases on other platforms
587 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
589 * optimization: file compiler is now able to coalesce non-circular
590 lists, non-base strings, and bit-vectors. Additionally, constants
591 are never referenced through SYMBOL-VALUE at runtime.
592 * optimization: code defining methods on PRINT-OBJECT (and other
593 generic functions in the COMMON-LISP package) now loads faster.
594 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
596 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
597 fasl is now deleted. (reported by Attila Lendvai)
598 * bug fix: READ-LINE always returned NIL for the last line in files.
599 (reported by Yoshinori Tahara)
600 * bug fix: more accurate disassembly annotations of foreign function
601 calls. (thanks to Andy Hefner)
602 * bug fix: trimming non-simple strings and non-string string
603 designators when the there is nothing to trim works properly.
604 (thanks to James Knight)
605 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
606 (thanks to Travis Cross)
607 * fixed some bugs revealed by Paul Dietz' test suite:
608 ** NIL is a valid function name (regression at 1.0.13.38)
609 ** FILL on lists was missing its return value (regression at 1.0.12.27)
610 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
611 fill pointers properly (regression at 1.0.12.23)
612 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
613 displacement indices properly (regression at 1.0.12.23)
615 changes in sbcl-1.0.17 relative to 1.0.16:
616 * temporary regression: user code can no longer allocate closure
617 variable storage on stack, due to bug 419 without explicitly
618 requesting it. Please consult sbcl-devel for advice if you need to
619 use this feature in the meanwhile.
620 * new feature: runtime argument --control-stack-size can be used to
621 adjust thread default control stack size.
622 * enhancement: improved TIME output
623 ** all times are reported using the measured accuracy (milliseconds
624 for real and GC times, microseconds for everything else.)
625 ** processor cycle counts on x86 and x86-64.
626 ** interpreted forms are counted for both evaluator modes.
627 ** number of lambdas converted by the compiler is reported.
628 ** CPU percentage report (computed from real and total run time.)
629 ** more comprehensive run time reporting, using a condenced format
630 ** interperted form, lambda, and page fault counts are omitted
632 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
634 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
635 * optimization: two argument forms of LAST are upto ~10% faster
636 in normal SPEED policies.
637 * optimization: NCONC no longer needs to heap cons its &REST list
638 in normal SPEED policies.
639 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
641 * bug fix: UNION and NUNION work with :TEST-NOT once more,
642 regression since 1.0.9.1. (thanks to Eric Marsden)
643 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
644 since 1.0.15.36. (thanks to Paul Khuong)
645 * bug fix: LAST when always returned the whole list when given a bignum
646 as the second argument.
647 * bug fix: dynamic extent allocation of nested lists and vectors
648 could leak to otherwise accessible parts.
649 * bug fix: invalid optimization of heap-allocated alien variable
651 * bug fix: fasl header checking is less vulnerable to different
652 platform word lengths.
653 * bug fix: more correct assembler syntax for GNU binutils
654 2.18.50.0.4 support. (thanks to Marijn Schouten)
655 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
657 * bug fix: the fopcompiler can handle LOCALLY forms (with no
658 declarations) successfully. (reported by Attila Lendvai)
660 changes in sbcl-1.0.16 relative to 1.0.15:
661 * minor incompatible change: revert the changes to sb-posix's error
662 signaling added in 1.0.14.
663 * minor incompatible change: change PROBE-FILE back to returning
664 NIL whenever we can't get a truename, as was the case before 1.0.14.
665 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
666 inherits from ERROR instead of just CONDITION.
667 * new feature: SB-INTROSPECT can provide source locations for instances
668 as well. (thanks to Tobias Rittweiler)
669 * optimization: binding special variables now generates smaller code
670 on threaded platforms.
671 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
672 and cases where no :TEST is given but the compiler can infer that
673 the element to search is of type (OR FIXNUM (NOT NUMBER)).
674 * optimization: better LOGNOT on fixnums.
675 * optimization: modular arithmetic for a particular requested width
676 is implemented using a tagged representation unless a better
677 representation is available.
678 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
679 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
680 for wellformedness and returns a specialized vector. (reported by
681 Francois-Rene Rideau)
682 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
683 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
684 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
685 unscheduling timer at the same time as another timer fires.
686 * bug fix: don't reschedule timers for dead threads.
687 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
688 * bug fix: copying output from RUN-PROGRAM to a stream signalled
689 bogus errors if select() was interrupted.
690 * enhancement: add support for fcntl's struct flock to SB-POSIX.
692 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
693 * enhancement: cleaner backtraces for interactive interrupts, as
694 well as other cases where the interesting frames used to be
695 obscured by interrupt handling frames.
696 * enhancement: untracing a whole package using (UNTRACE "FOO") is
697 now supported, and tracing a whole package using (TRACE "FOO") now
698 traces SETF-functions as well.
699 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
700 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
701 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
702 * unreadably printed representation of hash-tables now includes
704 * bug fix: partially fixed #188: type propagation from assignments
705 is now more efficient.
706 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
707 'DOUBLE-FLOAT) are not flushable.
708 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
709 full address of the object, and none of the tag bits.
710 * bug fix: readably printing hash-tables now respects other printer
711 control variables. (reported by Cedric St-Jean)
712 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
713 keyword with MAKE-HASH-TABLE.
714 * bug fix: export SB-POSIX:MKSTEMP.
715 * bug fix: SORT was not interrupt safe.
716 * bug fix: XREF accounts for the last node of each basic-block as
718 * bug fix: MAKE-INSTANCE optimizations interacted badly with
719 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
720 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
721 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
722 create obsolete instances in the case of redefinition or
723 obsoletion of a superclass. (thanks to Andy Hefner)
724 * bug fix: Support for the Alpha architecture has been revived; it had
725 suffered somewhat from lack of maintenance since sbcl-1.0.
726 * improvements to the Windows port:
727 ** The system detects the codepage to use at startup, instead of
728 using the value from the saved core. (thanks to Kei Suzuki)
730 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
731 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
732 (see documentation for details.)
733 * revived support for OpenBSD (contributed by Josh Elsasser)
734 * partially fixed bug #108: ROOM no longer suffers from occasional
735 (AVER (SAP= CURRENT END)) failures.
736 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
737 bodies no longer cause a WARNING to be signalled. (reported by
739 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
740 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
741 the bug in TRUNCATE.) (reported by Michael Weber)
742 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
743 no samples. (reported by Andy Hefner)
744 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
745 no longer appear as (NIL ...) frames in backtraces.
746 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
747 is now actually exported from SB-EXT as documented. (reported by
749 * bug fix: sb-aclrepl now correctly understands how to inspect
750 single-floats on 64-bit platforms where single-floats are not boxed.
751 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
752 yet been finalized. (reported by Levente Meszaros)
753 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
754 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
755 SBCL-specific optimize qualities.
757 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
758 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
759 an executable in the search path, and does so in the child
760 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
761 been removed; it can be found in the CVS history, for somebody who
762 needs that search behavior (see the manual).
763 * minor incompatible change: compiler policy re. weakening type
764 checks has changed: now type checks are weakened only if SAFETY < 2
766 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
767 unparsing of directory pathnames as files. Analogously,
768 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
769 filename to parse into a directory pathname.
770 * enhancement: implicit generic function creation now signals a
771 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
772 users can bind handlers for and muffle around calls to LOAD.
773 * enhancement: RUN-PROGRAM allows unicode arguments and environments
774 to be used (using the default stream external format), and allows
775 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
776 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
777 strings and vectors whose element-type or simplicity is not fully
778 known at compile-time.
779 * optimization: STRING-TRIM and related functions no longer allocate
780 a new string when no trimming needs to be performed. These functions
781 are also faster than before when the input string has been declared
783 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
784 * optimization: READ-LINE is significantly faster for files containing
786 * optimization: non-open coded uses of character comparison operators
787 (e.g. char=) no longer cons when called with more than one parameter
788 on platforms supporting dynamic-extent allocation.
789 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
790 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
791 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
793 * bug fix: some sequence functions elided bounds checking when
795 * bug fix: too liberal weakening of union-type checks when SPEED >
797 * bug fix: more bogus fixnum declarations in ROOM implementation
800 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
801 * new feature: MAKE-HASH-TABLE now experimentally accepts a
802 :SYNCHRONIZED argument, which makes the hash-table safe for
803 concurrent accesses (but not iteration.) See also:
804 SB-EXT:WITH-LOCKED-HASH-TABLE, and
805 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
806 * optimization: CONCATENATE on strings is an order of magnitude faster
807 in code compiled with (> SPEED SPACE).
808 * optimization: SUBSEQ is ~50% faster on lists.
809 * bug fix: bug 417 fixed -- source location reporting is now more robust.
810 * bug fix: SUBSEQ on a list will now correctly signal an error if if
811 END is smaller then START.
812 * bug fix: SB-PROFILE will no longer report extra consing for nested
813 calls to profiled functions.
814 * bug fix: ROOM implementation had bogus fixnum declarations which
815 could cause type-errors when calling ROOM on large images.
816 * bug fix: if file compilation is aborted, the partial fasl is now
817 deleted, and COMPILE-FILE returns NIL as the primary value.
818 * bug fix: number of thread safety issues relating to SBCL's internal
819 hash-table usage have been fixed.
820 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
821 be returned from its body when the values were being returned
822 using unknown-values return convection and the W-P-O was wrapped
823 inside an UNWIND-PROTECT.
824 * bug fix: sb-posix should now compile again under Windows, enabling
827 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
828 * incompatible change: hash-table accessor functions are no longer
829 automatically protected by locks. Concurrent accesses on the same hash-table
830 from multiple threads can give inconsistent results or even corrupt the
831 hash-table completely. Multi-threaded applications should do their own
832 locking at the correct granularity. In the current implementation it is
833 still safe to have multiple readers access the same table, but it's not
834 guaranteed that this property will be maintained in future releases.
835 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
836 and will signal an error at runtime.
837 * enhancement: SB-THREAD package now exports a semaphore interface.
838 * enhancement: CONS can now stack-allocate on x86 and
839 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
841 * enhancement: nested lists can now be stack allocated on
842 platforms providing stack allocation support.
843 * enhancement: dynamic-extent support has been extended to support
844 cases where there are multiple possible sources for the stack
846 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
847 if the mutex is uncontested on Linux.
848 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
849 as specified by the CLHS. (thanks to Tobias Rittweiler)
850 * bug fix: NaN comparison now works on x86-64.
851 * bug fix: CLOSE :ABORT T on a stream with pending output now
853 * bug fix: instances of non-standard metaclasses using standard
854 instance structure protocol sometimes missed the slot type checks
856 * bug fix: known functions can be inlined in high-debug code.
858 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
859 * minor incompatible change: the MSI installer on Windows no longer
860 associates .lisp and .fasl files with the installed SBCL.
861 * minor incompatible change: :UNIX is no longer present in *FEATURES*
862 on Windows. (thanks to Luis Oliviera)
863 * new feature: SB-CLTL2 contrib module now implements
864 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
865 * optimization: scavenging weak pointers is now more efficient,
866 requiring O(1) instead of O(N) per weak pointer to identify
867 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
868 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
869 method bodies using constant slot-names when the first argument is
870 a specializer parameter for the method.
871 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
872 names, when the class of the instance is a direct instance
873 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
874 as slow as the constant slot-name case.)
875 * optimization: member type construction is now O(N) instead
877 * optimization: UNION and NUNION are now O(N+M) for large
878 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
880 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
881 now more readable in environments like Slime which display it.
882 (thanks to Tobias C. Rittweiler)
883 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
884 was able to infer the correct argument type for the object on which
885 the CAS operation was being performed.
886 * bug fix: copy propagation interfered with parallel assignment
887 semantics in local calls. (reported by Paul Khuong)
888 * bug fix: the signed modular fixnum shift compiled to wrong code on
889 x86 and x86-64. (spotted by a slight modification to some of
892 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
893 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
894 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
895 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
897 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
898 and generic function now print the object identity for anonymous
899 instances. (thanks to Attila Lendvai)
900 * enhancement: as an extension to MOP, SBCL now supports SETF of
901 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
902 (thanks to Attila Lendvai)
903 * enhancement: sb-cover has an alternate annotation mode which puts
904 the form annotations at the car of the form, instead of annotating
905 it completely. The benefit of this mode is that it shows better
906 which forms were instrumented by the compiler.
907 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
908 by printer control variables. (reported by Dan Corkill)
909 * bug fix: system leaked memory when delayed output was performed by
910 the OS in smaller chunks then expected. (thanks to David Smith)
911 * bug fix: system leaked memory when file streams were not closed
913 * bug fix: large objects written to slow streams that were modified
914 after the write could end up with the modified state written to
915 the underlying file descriptor.
916 * bug fix: multiple threads operating in parallel on the same stream
917 could cause buffer-overflows.
918 * bug fix: source location information is stored correctly
919 (broken since 1.0.6). This bug would generally show up as the
920 Slime debugger highlighting the wrong form when the sldb-show-source
922 * bug fix: Branch forms are again annotated as branches in the sb-cover
924 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
925 on x86-64. (reported by Gregory Vanuxem)
926 * bug fix: EQUALP could return wrong results for structures with raw
927 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
928 word). (reported by Vjacheslav Fyodorov)
929 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
932 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
933 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
934 atomic compare-and-swap operations on threaded platforms.
935 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
936 allows assigning a global minimum value to optimization qualities
937 (overriding proclamations and declarations).
938 * enhancement: closed over variables can be stack-allocated on x86
940 * performance bug fix: GETHASH and (SETF GETHASH) are once again
942 * optimization: slot definition lookup is now O(1). This speeds up
943 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
944 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
945 * optimization: ASSOC and MEMBER can now be open-coded for all
946 combinations of keyword arguments when second argument is constant
947 and SPEED >= SPACE. In other cases a specialized version is
949 * bug fix: using obsoleted structure instances with TYPEP and
950 generic functions now signals a sensible error.
951 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
952 (reported by Kristoffer Kvello)
953 * bug fix: backtrace construction is now more careful when making
954 lisp-objects from pointers on the stack, to avoid creating bogus
955 objects that can be seen by the GC.
956 * bug fix: defaulting of values in contexts expecting more than 7
957 variables now works on x86-64. (reported by Christopher Laux)
958 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
960 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
961 as the property-list of a symbol.
962 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
963 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
964 situations requested, are once again file-compileable. (reported
967 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
968 * MOP improvement: support for user-defined subclasses of
969 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
970 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
971 the expansion of DEFMETHOD, is responsible for generating a form
972 which creates a list of specializers when evaluated. Additional
973 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
974 debugging and introspective support.
975 * minor incompatible change: the (unsupported) spinlock interface
976 has changed: free spinlock now has the value NIL, and a held spinlock
977 has the owning thread as its value.
978 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
979 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
981 * enhancement: name of a socket-stream is now "a socket" instead of
983 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
984 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
985 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
986 for generic functions. (Thanks to Tobias C. Rittweiler)
987 * optimization: bignum printing speed has been improved by 20-40%
988 (depending on the bignum size.)
989 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
991 * bug fix: the cache used by the CLOS to store precomputed effective
992 methods, slot offsets, and constant return values is now thread and
994 * bug fix: generic function dispatch function updating is now thread
995 and interrupt safe (in the sense that the known issues have been
997 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
998 * bug fix: interning EQL-specializers is now thread and interrupt safe.
999 * bug fix: asdf systems with dependencies to the SB-POSIX or
1000 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1001 * bug fix: interrupt safety of applicable method computation has been
1004 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1005 * new contrib: sb-cover, an experimental code coverage tool, is included
1006 as a contrib module.
1007 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1008 significantly faster.
1009 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1010 produce more efficient code on x86-64 if the compiler can determine
1011 that (+ INDEX <constant>) does not require a bounds check and FOO
1012 has an element type at least 8 bits wide.
1013 * enhancement: a new, experimental synchronous timeout facility is
1014 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1015 * enhancement: when a symbol name conflict error arises, the
1016 conflicting symbols are always printed with a package prefix.
1017 (thanks to Kevin Reid)
1018 * enhancement: stepping is now once again supported on the SPARC and
1019 MIPS platforms. (It is also now more likely to work on CheneyGC
1021 * enhancement: sb-sprof can now also track and report accurate call
1023 * bug fixes: the treatment of non-standard subclasses of
1024 SB-MOP:SPECIALIZER is more correct.
1025 * incompatible change: PURIFY no longer copies the data from the
1026 dynamic space into the static and read-only spaces on platforms
1027 that use the generational garbage collector
1028 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1030 * bug fix: GC race condition occasionally resulting in crashes with
1031 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1033 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1035 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1036 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1037 * bug fix: an asynchronous interrupt could previously leave the
1038 system running with GC inhibited.
1039 * bug fix: a DECLARE form evaluated at top-level now causes an error
1040 rather than silently (or verbosely) returning NIL.
1041 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1042 result in a error being signalled due to source form lookup errors.
1043 (reported by Peter Graves)
1045 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1046 * incompatible change: removed writer methods for host-ent-name,
1047 host-ent-addresses -- changing the values did not update the DNS
1049 * minor incompatible change: changed experimental JOIN-THREAD interface
1050 * documentation: the manual now lists reader and writer methods
1051 in class slot documentation sections. (thanks to Richard M Kreuter)
1052 * documentation: unwinding from asyncronous events has been
1053 documented as unsafe.
1054 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1055 in multithreaded application code.
1056 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1057 platforms. (thanks to James Anderson for the optimization hint)
1058 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1060 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1061 variants no longer cons.
1062 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1063 their NOT- variants no longer cons.
1064 * optimization: EQUAL hash tables no longer use SXHASH for objects
1065 of all data types, but instead use an EQL hash for types for which
1066 EQUAL is the same as EQL.
1067 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1068 are significantly faster.
1069 * optimization: new STRING-OUTPUT-STREAM implementation is much
1070 faster for large outputs and conses 30% less on average.
1071 * enhancement: XREF information is now collected for references made
1072 to global variables using SYMBOL-VALUE and a constant argument.
1073 * enhancement: SIGINT now causes a specific condition
1074 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1075 * bug fix: FILE-POSITION used to signal an error in some cases where
1076 ANSI requires it to return NIL.
1077 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1078 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1079 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1081 * bug fix: bad type declaration in the CLOS implementation has
1082 been fixed. (reported by James Anderson)
1083 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1084 (thanks to Lutz Euler)
1085 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1086 required by the CLHS. (reported by Samium Gromoff)
1087 * bug fix: dead unbound variable references now signal an error.
1088 (reported by Marco Monteiro)
1089 * bug fix: / with an unused value was being deleted in safe code.
1090 (thanks to Marco Monteiro and Kevin Reid)
1091 * bug fix: number of characters that can be written onto a single
1092 line in a file is unlimited.
1093 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1094 been fixed by inhibiting interrupts for when GC is disabled.
1095 * bug fix: some interrupt safety issues with GETHASH, (SETF
1096 GETHASH), CLRHASH and REMHASH have been fixed.
1097 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1098 specifier no longer causes infinite recursion.
1099 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1100 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1101 * bug fix: an &environment argument with the correct variable information
1102 is passed to macros that are expanded during byte compilation.
1103 (reported by Samium Gromoff)
1104 * bug fix: a logic error was causing the hash function for bignums to
1105 have excessive amounts of collisions. (reported by Faré Rideau)
1106 * bug fix: modifying the contents of an array could change the return
1107 value of SXHASH on that array, which is only allowed for strings
1108 and bit vectors. (bug introduced in 0.9.16)
1109 * improvement: the x86-64/darwin port now passes all tests (except
1110 for the debugger tests) but should still be considered
1111 experimental until this is fixed.
1112 * improvement: a style-warning is signaled for CASE (etc) clauses with
1113 duplicate keys. (thanks to Kevin Reid)
1114 * improvement: macos/x86 and macos/x86-64 now use mach exception
1115 handlers for dealing with illegal instructions (for trapping and
1116 error handling) and memory protection violations (for GC).
1118 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1119 * new platform: experimental support for x86-64/darwin (MacOS).
1120 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1121 and getnameinfo sockets functions are used instead of gethostbyaddr
1122 and gethostbyname, on platforms where the newer functions are available.
1123 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1125 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1126 don't print the startup banner, but behave as if --noinform was passed
1127 as a command line argument. (thanks to Kevin Reid)
1128 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1129 * optimization: code using alien values with undeclared types is much faster.
1130 * optimization: the compiler is now able to open code SEARCH in more cases.
1131 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1132 * bug fix: using standardized COMMON-LISP special variables as loop
1133 variables no longer signals bogus package lock violations. (reported
1135 * bug fix: declaring local loop variables to be of a range-limited type
1136 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1137 (reported by Andras Simon)
1138 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1139 bugs remain on x86-64.)
1140 * bug fix: the #= and ## reader macros now interact reasonably with
1141 funcallable instances.
1142 * bug fix: type-checks for function arguments were compiled using the
1143 compiler policy settings of the wrong lexical environment (in 1.0.2
1145 * bug fix: SHADOW accepts characters as string designators, as required
1146 by the spec (thanks to Eric Marsden)
1147 * bug fix: fixed GC safety issues when foreign functions are called with
1148 non-base strings as arguments
1149 * bug fix: more consistent error output for fatal-compiler-warnings, like
1151 * bug fix: functions with proper names were showing up as NIL in
1152 backtraces (reported by Edi Weitz, regression in 1.0.2)
1154 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1155 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1156 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1157 produce more efficient code on the x86 if the compiler can determine
1158 that (+ INDEX <constant>) does not require a bounds check and FOO
1159 has an element type at least 8 bits wide.
1160 * bug fix: references to undefined variables are handled the same way
1161 in toplevel forms as in the normal compiler
1162 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1164 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1165 (thanks to Jon Buller)
1166 * improvement: faster compilation times for complex functions
1167 * improvement: added readlink support to SB-POSIX (thanks to Richard
1170 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1171 * improvement: experimental support for mach exception handling on
1172 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1174 * improvement: support for GBK external format.
1175 (thanks to Chun Tian (binghe))
1176 * improvement: the debugger now displays variables that have been closed
1177 over, in code compiled with (DEBUG 2) or higher
1178 * improvement: support for executable cores on NetBSD (thanks to
1180 * new feature: added a RESTART-FRAME debugger command
1181 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1182 be used to provide an implementation for FILE-POSITION on Gray streams
1183 (thanks to Eric Marsden)
1184 * new feature: add syslog, openlog and closelog support to SB-POSIX
1185 (thanks to Richard Kreuter)
1186 * optimization: the function call overhead in code compiled with
1187 a high DEBUG optimization setting is significantly
1188 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1189 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1190 (thanks to Tony Martinez)
1191 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1192 evaluated once (reported by Kevin Reid)
1193 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1194 works again (thanks to Kilian Sprotte)
1195 * bug fix: an error is signaled for tagbodies with duplicate tags
1196 (thanks to Stephen Wilson)
1197 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1198 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1199 stack frames from alien callbacks.
1200 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1201 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1202 65k pages (thanks to David Woodhouse)
1203 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1205 changes in sbcl-1.0.1 relative to sbcl-1.0:
1206 * new platform: FreeBSD/x86-64, including support for threading.
1207 * new feature: the compiler stores cross-referencing information
1208 about function calls (who-calls), macroexpansion (who-macroexpands)
1209 and special variables (who-binds, who-sets, who-references) for code
1210 compiled with (< SPACE 3). This information is available through the
1211 sb-introspect contrib.
1212 * new feature: users may subclass SEQUENCE, and have instances of
1213 these classes interoperate with standard Common Lisp functions if
1214 a number of methods are defined. (This feature is experimental
1215 and the interface subject to change based on feedback from SBCL
1216 users and the general community)
1217 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1218 x86/x86-64, rather than the previous fixed depth of 8
1219 * improvement: another pthread back-end of mutex "pthread-futex".
1220 * bug fix: non-ascii command-line arguments are processed correctly
1221 (thanks to Yaroslav Kavenchuk)
1222 * bug fix: non-required arguments were not passed correctly when a method
1223 defined using DEFMETHOD was called from a mop-generated method using
1224 CALL-NEXT-METHOD (reported by Pascal Costanza)
1225 * bug fix: recursion is now permitted in accessors through
1226 SLOT-UNBOUND. (reported by Pascal Costanza)
1227 * bug fix: an error was signaled at startup if the HOME environment
1228 variable was defined, but had an empty value (reported by Peter Van Eynde)
1229 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1230 signal a PROGRAM-ERROR, not a BUG.
1231 * bug fix: SB-POSIX:READDIR works when built with large file support.
1232 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1234 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1235 for better automatic indentation support. (thanks to Matt Pillsbury)
1236 * optimization: loading generic functions no longer takes O(n^2) time,
1237 proportional to the amount of methods in the generic function
1238 (reported by Todd Sabin and Jeremy Brown)
1239 * optimization: the FIND and POSITION family of sequence functions
1240 are significantly faster on arrays whose element types have been
1242 * improvements to the Windows port:
1243 ** Intermittent heap corruption problems have been fixed. (thanks
1244 to Alastair Bridgewater)
1245 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1247 ** Lisp is able to unwind foreign exception frames from alien
1248 callbacks. (thanks to Alastair Bridgewater)
1250 changes in sbcl-1.0 relative to sbcl-0.9.18:
1251 * improvement: experimental support for threading on FreeBSD/x86.
1252 (thanks to NIIMI Satoshi)
1253 * improvement: runtime option --dynamic-space-size can be used
1254 to set the size of the dynamic space reserved on startup.
1255 * improvement: floating point modes in effect are now saved in
1256 core, and restored on startup.
1257 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1258 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1259 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1260 threads are not running after *SAVE-HOOKS* have run.
1261 * improvement: writes to CLOS instance slots are type-checked in code
1262 compiled with (SAFETY 3)
1263 * improvement: floating-point exception handling on FreeBSD (thanks to
1265 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1266 (thanks to Zach Beane)
1267 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1269 * improvement: added support for the Shift-JIS external format.
1270 (contributed by NIIMI Satoshi)
1271 * improvement: callbacks are supported on Linux/PPC. (thanks to
1273 * bug fix: compiler bug triggered by a (non-standard) VALUES
1274 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1275 * bug fix: file compiler no longer confuses validated and already
1276 dumped structurres. (reported by Kaersten Poeck)
1277 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1278 fill-pointer signals a type-error as required. (thanks to
1280 * bug fix: disassemly of funcallable instances works.
1281 * bug fix: single stepping on PPC.
1282 * bug fix: fix thread-safety problems in the type system (generally
1283 manifesting as nonsensical errors like "STRING is a bad type specifier
1284 for sequences" or "The value 1 is not of type FIXNUM")
1285 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1286 (reported by Josip Gracin)
1287 * bug fix: an error is signaled for attempts to displace arrays with
1288 incompatible element types (thanks to Mario Mommer)
1289 * bug fix: more correct handling of wide characters in debug info
1290 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1291 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1292 and don't cause extra consing
1293 * optimization: MAP and MAP-INTO are significantly faster on vectors
1294 whose elements types have been declared.
1295 * Improvements to SB-SPROF:
1296 ** Support for allocation profiling
1297 ** Reduced profiling overhead, especially for long profiling runs
1298 * Improvements to the Windows port:
1299 ** floating point exceptions are now reported correctly.
1300 ** stack exhaustion detection works partially.
1301 ** more accurate GET-INTERNAL-REAL-TIME.
1302 ** better RUN-PROGRAM behaviour in case of errors in the child
1304 ** PROBE-FILE now simplifies pathnames correctly.
1305 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1306 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1307 1st 1970 (although time timezone data will be unreliable).
1308 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1310 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1311 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1312 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1314 * bug fix: two potential GC deadlocks affecting threaded builds.
1315 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1316 returns T (reported by Anton Kazennikov)
1317 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1318 with non-variable places
1319 * bug fix: remove a race condition in the setting of
1320 funcallable-instance functions, this should make threaded CLOS
1321 code more stable against memory faults.
1322 * bug fix: corruption of specials when unbinding is interrupted by an
1323 asynchronous unwind (reported by Hannu Koivisto)
1324 * improvement: the debugger will now also display local variables that
1325 are only used once, for code compiled with a DEBUG optimization quality
1328 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1329 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1330 * incompatible change: External-format support for FFI calls. The
1331 SB-ALIEN:C-STRING no longer implies an ASCII
1332 external-format. Instead the string is subject to external-format
1333 conversion. Additionally return values of type SB-ALIEN:C-STRING
1334 are by default of type (SIMPLE-ARRAY CHARACTER), not
1335 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1336 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1337 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1338 * incompatible change: SB-EXT package no longer contains the
1339 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1340 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1342 * incompatible change: the single-stepper is no longer available
1343 on Alpha, Mips and Sparc platforms.
1344 * minor incompatible change: the direct superclasses of
1345 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1346 not (STANDARD-OBJECT FUNCTION). This makes the
1347 class-precedence-lists of GENERIC-FUNCTION and
1348 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1350 * minor incompatible change: the default stream external format on
1351 non-unicode SBCL is no longer detected from the locale, but is always
1353 * new feature: Add a version of evaluator that uses an interpreter instead
1354 of the compiler. EVAL still uses the compiler by default, to switch it
1355 to use the interpreter, set the value of the variable
1356 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1357 * minor incompatible change: the single-stepper REPL has been merged
1358 with the normal debugger (see the "Stepping" heading of the debugger help
1359 for more details). The debugger command STEP will no longer switch
1360 to the single-stepper REPL.
1361 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1362 for a type now works.
1363 * bug fix: loading of default sysinit file works. (thanks to Leonid
1365 * bug fix: better detection of circularities in the file-compiler.
1366 (reported by Marco Monteiro)
1367 * bug fix: the CL pathname functions now work with files that have
1368 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1369 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1370 systems with Unix98 pty semantics.
1371 * bug fix: ASDF-INSTALL will now work with bsd tar.
1372 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1374 * bug fix: timers expiring in dead threads no longer cause a
1375 type-error (reported by Paul "Nonny Mouse").
1376 * bug fix: thanks to more lightweight single-stepper instrumentation,
1377 code compiled with (DEBUG 3) will compile and execute significantly faster,
1378 and will have more accurate type-inferencing than before
1379 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1380 whose bindings are modified
1381 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1382 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1383 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1384 CL:SOFTWARE-VERSION with proper version
1386 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1387 * feature: implemented the READER-METHOD-CLASS and
1388 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1389 as specified by AMOP.
1390 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1392 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1393 (thanks to Lutz Euler)
1394 * optimization: hashing of general arrays and vectors has been
1395 improved. (reported by Any Fingerhut)
1396 * enhancement: SB-INTROSPECT is now able to find definitions of
1397 profiled functions. (thanks to Troels Henriksen)
1398 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1399 as well, allowing compiler-macros for SETF-functions to expand.
1400 * enhancement: step-instrumentation no longer wraps known
1401 single-value functions with multiple-value context, allowing
1402 better type inference.
1403 * fixed bug #337: use of MAKE-METHOD in method combination now works
1404 even in the presence of user-defined method classes. (reported by
1405 Bruno Haible and Pascal Costanza)
1406 * fixed bug #339(c): if there are applicable methods not part of any
1407 long-form method-combination group, call INVALID-METHOD-ERROR.
1408 (reported by Bruno Haible)
1409 * fixed bug #361: the :FUNCTION initarg in the protocol for
1410 initialization of methods can now be used to override
1411 internally-produced optimized functions. (reported by Bruno
1413 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1414 system-provided lambda expression no longer cause warnings about
1415 unbound #:|pv-table| symbols.
1416 * bug fix: improved the handling of type declarations and the
1417 detection of violations for keyword arguments with non-constant
1419 * bug fix: potentially erronous calls to PATHNAME and
1420 MERGE-PATHNAMES were being flushed in some cases.
1421 (reported by Richard Kreuter)
1422 * bug fix: compiled calls to TYPEP were mishandling obsolete
1423 instances. (reported by James Bielman and Attila Lendvai)
1424 * bug fix: format strings with ~> without matching ~< no longer
1425 trigger an AVER, but signal an understandable error instead.
1426 (reported by Antonio Martinez)
1427 * bug fix: specifying an output-file without a pathname-type for
1428 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1429 of input-file instead of "fasl". (reported by Robert Dodier)
1430 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1431 (reported by James Y Knight).
1432 * bug fix: compiler-macros-function did not consider the environment
1433 argument for shadowing by local functions.
1434 * bug fix: compiler-macros expansion was inhibited by local INLINE
1436 * bug fix: inline expansions of known functions were subject to
1437 step-instrumentation in high debug policies, leading to problems
1438 with type-inference.
1439 * bug fix: compiler failed to differentiate between different CONS
1440 types in some cases.
1441 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1442 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1443 * bug fix: #368: incorrect use of expressed vs. upgraded array
1445 * bug fix: #306a: more precise unions of array types.
1446 * thread-safety improvements:
1447 ** CONDITION-WAIT could return early on Linux, if the thread was
1448 interrupted and subsequently continued with SIGCONT.
1449 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1451 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1452 * added support for the ucs-2 external format. (contributed by Ivan
1454 * minor incompatible change: pretty printing of objects of type
1455 (cons symbol) is, in the default pprint-dispatch-table, now
1456 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1458 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1459 called later in a class's lifetime, possibly as late as when the
1460 first instance of the class is created. Previously,
1461 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1462 class became finalizeable.
1463 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1464 for multibyte external-format streams. (thanks to "vbzoli")
1465 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1466 with :ALLOCATION :CLASS inherited from superclasses of the
1468 * fixed bug: anonymous classes can now be created using the :NAME
1469 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1470 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1471 * fixed bug: core-files saved with :EXECUTABLE T can again be
1472 executed when SBCL_HOME isn't set. (reported by James Knight)
1473 * fixed bug: toplevel LOCALLY forms with declarations could
1474 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1475 * fixed bug: printing from several different threads using different
1476 values of *print-case* could cause invalid output, due to
1477 some internal special variables of the printer not being bound
1478 thread-locally (reported by Max Mikhanosha)
1479 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1480 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1481 (reported by Pascal Costanza)
1482 * fixed bug: FINALIZE-INHERITANCE is called from
1483 REINITIALIZE-INSTANCE on classes when the class has previously
1484 been finalized, as required by AMOP.
1485 * minor code generation optimizations:
1486 ** better register allocation in CLOS dispatching functions
1487 ** overflow detection when coercing signed bytes to fixnums on x86-64
1488 ** is now implemented with one IMUL instruction instead of three shifts
1489 ** more efficient bit-vector access on x86 and x86-64
1490 ** more efficient access to raw structure slots on x86 and x86-64
1491 * fixed some bugs revealed by Paul Dietz' test suite:
1492 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1493 return its argument.
1495 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1496 * feature: thread support on Solaris/x86, and experimental thread support
1498 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1500 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1501 default method for SLOT-UNBOUND.
1502 * minor incompatible change: prevent the user from specializing the
1503 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1504 somewhat counter to the intent of the protocol, I (CSR) think, and
1505 additionally it just doesn't work in SBCL as currently
1506 implemented, thanks to optimizations (that are always valid for
1507 the other three SLOT-VALUEish functions, but not for the setter).
1508 * minor incompatible change: the :SB-LDB feature is now enabled by
1509 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1510 the low-level debugger.
1511 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1512 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1513 down to an SB-SYS:FD-STREAM, allowing direct communication in
1514 more cases. Temporary files and pipes are still used as a fallback
1516 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1517 on the non-reentrant C functions localtime(3) and gmtime(3).
1518 * bug fix: global optimization policy was not visible in LOCALLY and
1520 * bug fix: class objects can be used as specializers in methods.
1521 (reported by Pascal Costanza)
1522 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1523 with a type error. (reported by blitz_ on #lisp)
1524 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1525 failed with a type error. (reported by Pascal Bourguignon)
1526 * bug fix: merging pathnames against defaults with :DIRECTORY
1527 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1528 (reported by James Y Knight)
1529 * bug fix: saving large (>2GB) cores on x86-64 now works
1530 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1531 constant index and a (simple-array (signed-byte 32)) array
1532 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1533 error (patch by Robert J. Macomber)
1534 * feature: TIME now displays the amount of run-time spent in GC
1535 * bug fix: The debugger now does a better job of respecting
1536 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1537 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1538 workaround for bug 403.)
1539 * bug fix: floating point exception handling now works on FreeBSD
1540 (thanks to NIIMI Satoshi)
1541 * fixed some bugs revealed by Paul Dietz' test suite:
1542 ** MISC.641: LET-conversion were not supposed to work in late
1544 * improvements to the Win32/x86 port:
1545 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1546 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1548 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1549 * new feature: source path information is generated for macro-expansion
1550 errors for use in IDE's like Slime (thanks to Helmut Eller)
1551 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1552 * bug fix: compiler does not loop forever on an invalid type in
1554 * improvement: compilation of most CLOS applications is significantly
1556 * optimization: added a limited bytecode compiler for simple toplevel
1557 forms, speeding up compilation and FASL loading
1558 * bug fix: the statistical profiler now properly distinguishes anonymous
1561 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1562 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1563 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1564 into subclasses of the finalized class. Now user calls to
1565 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1566 system return before any subclasses are finalized.
1567 * minor incompatible change: The reader no longer ignores errors
1568 regarding non-existent packages in #+ and #- feature tests.
1569 * new feature: command line options --no-sysinit, --no-userinit to
1570 inhibit loading the corresponding init files
1571 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1572 for sending data through UDP sockets (thanks to François-René Rideau)
1573 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1574 error is signalled instead (thanks to François-René Rideau)
1575 * minor incompatible change: Error signalling behaviour of lexical
1576 operations violating package locks has changed slightly. Refer to
1577 documentation on package locks for details.
1578 * enhancement: EVAL can process IF-expressions without resorting to the
1580 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1581 constant-folded properly due to missing out-of-line functions.
1582 (reported by Mika Pihlajamäki)
1583 * bug fix: LISTEN sometimes returned T even in cases where no data was
1584 immediately available from the stream
1585 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1586 were reversed. (reported by Levente Mészáros)
1587 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1588 when given a vector displaced to an adjustable array. (reported
1590 * bug fix: derivation of float boundaries from numbers outside the
1591 appropriate float range (reported by John Wiseman)
1592 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1594 * bug fix: precomputing cache entries for generic functions with
1595 some subclasses of specializers as yet invalid does not attempt to
1596 fill a cache line with a negative offset. (reported by Levente
1598 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1599 allow condition class objects as arguments to DOCUMENTATION and
1600 (SETF DOCUMENTATION); only find and set documentation for
1601 structure names for the STRUCTURE doc-type. (suggested by Gary
1603 * improvements to the Win32/x86 port:
1604 ** (user-homedir-pathname) and default initialization file
1605 locations now know about the user's "Documents and Settings"
1606 directory (thanks to Yaroslav Kavenchuk)
1607 ** run-program is implemented (thanks to Mike Thomas)
1608 ** sockets support (thanks to Timothy Ritchey)
1609 ** better backtrace support (thanks to Alastair Bridgewater)
1610 ** sb-grovel supported
1611 ** asdf-install and sb-posix work somewhat
1612 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1613 * improvements to the Solaris/x86 port:
1614 ** works on Solaris 11/Solaris Express
1615 ** floating-point exception handling support
1616 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1617 * fixed some bugs revealed by Paul Dietz' test suite:
1618 ** REMOVE-METHOD returns its generic function argument even when
1619 the method is not one of the generic functions' methods.
1620 ** objects declared as MEMBER types can be admissible arguments to
1621 structure accessors.
1622 ** printing characters should simply be printed by the FORMAT ~:C
1624 ** compiler failure when compiling functions with hairy constant
1625 defaults for optional parameters.
1626 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1627 function, which is already optimized.
1629 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1630 * new platform: experimental support for SBCL x86/Darwin, including
1631 MacOS X 10.4.5 on Intel.
1632 * new feature: Unicode character names are now known to the system
1633 (through CHAR-NAME and NAME-CHAR).
1634 * new feature: the filesystem location of SBCL's core file is
1635 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1636 * minor incompatible change: the contrib modules SB-POSIX and
1637 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1638 this change is to make it easier to distribute
1639 location-independent binaries.
1640 * bug fix: as implied by AMOP, standardized classes no longer have
1641 slots named by external symbols of public packages. (reported by
1643 * optimization: calling functions via constant symbols -- as in
1644 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1645 via the function object as in (FUNCALL #'FOO).
1646 * optimization: on x86 and x86-64, the calling convention for the
1647 case of dealing with an unknown number of values has been altered
1648 to be friendlier to the prediction heuristics implemented,
1649 particularly with reference to CALL and RET pairing. (thanks to
1650 Alastair Bridgewater)
1651 * optimization: on x86, the code for access to thread-local symbol
1652 values and binding/unbinding of thread-local symbols is smaller.
1653 (thanks to Alastair Bridgewater)
1654 * enhancement: CONSTANTP is now able to determine constantness of
1655 more complex forms, including calls to constant-foldable standardized
1656 functions and some special forms beyond QUOTE.
1657 * fixed bug: occasional GC crashes on Solaris/x86
1658 * optimization: x86-64 supports stack allocation of results of simple
1659 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1660 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1661 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1662 (thanks to James Knight)
1663 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1664 by the standard (thanks to Stephen Compall)
1666 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1667 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1668 be used for bundling the runtime and the core file into one
1669 executable binary. This feature is not currently supported on all SBCL
1670 platforms. (thanks to James Bielman and NIIMI Satoshi)
1671 * new feature: a generational or ephemeral garbage collector is now
1672 the default on the PowerPC platform (both Linux and Darwin). The
1673 old Cheney (stop and copy) collector is a build-time option.
1674 (thanks to Cyrus Harmon, after Raymond Toy)
1675 * minor incompatible change: the method by which SBCL finds its
1676 contributed modules has changed; it no longer relies on symbolic
1677 links from an $SBCL_HOME/systems directory, but searches directly
1678 in the subdirectories of $SBCL_HOME.
1679 * enhancement: the dynamic heap size on the Linux/PPC platform is
1680 markedly larger, even using the older Cheney garbage collector.
1681 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1682 certain complicated string types. (reported by Gary King)
1683 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1684 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1685 * fixed bug: DOCUMENTATION on structures no longer signals an
1686 error if no structure type of the right name exists. (reported by
1688 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1689 applicable non-standard primary or :AROUND method on
1690 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1691 no longer cause unbound variable errors. (reported by Kevin Reid)
1692 * fixed bug: metacircle resolution in cases where methods have slots
1693 added before the slots from STANDARD-METHOD. (reported by Jean
1695 * fixed bug: the Power PC assembly code for calling into lisp
1696 sometimes computed its return address wrongly (depending on the
1697 15th bit of the address, fixed at link time). This used to
1698 manifest itself in a segmentation violation while building PCL.
1699 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1700 many others over the years)
1701 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1702 the stack pointer (treated as a signed integer) is negative.
1703 (thanks to Peter van Eynde)
1705 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1706 * new platform: experimental support for the Windows operating
1707 system has been added. (thanks to Alastair Bridgewater)
1708 * fixed several bugs in and robustified the PPC FFI (including
1709 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1710 * bug fix: allow non-simple string symbol names (reported by Paul
1712 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1714 * bug fix: saving a core corrupted callbacks on x86/x86-64
1715 * bug fix: closed a loophole in metacircularity detection and
1716 grounding in the PCL implementation of CLOS.
1717 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1718 (reported by tomppa on #lisp)
1719 * bug fix: clear the direction flag on Lisp -> C transitions, as
1720 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1721 (reported by Andrej Grozin and Hendrik Maryns)
1722 * optimization: major improvements to GC efficiency on GENCGC platforms
1723 * optimization: faster implementation of EQUAL
1724 * optimization: emit more efficient opcodes for some common
1725 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1726 * optimization: several other minor code-generation improvements on x86-64
1727 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1729 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1730 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1731 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1732 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1733 by ANSI as a generic function, and for consistency (SETF
1734 GENERIC-FUNCTION-NAME) is treated likewise.
1735 * fixed bug #233.b: make constraint propagation notice when a variable
1736 value is changed after it is referenced but before it is used
1737 * fixed bug #296: no more arbitrary behaviour from filenames with
1738 odd characters as --load arguments. (reported by Adam Warner)
1739 * fixed bug #390: :CHARACTER-SET pathname components now work as
1740 expected. (reported by Tim Daly Jr)
1741 * fixed bug #391: complicated :TYPE intersections in slot
1742 definitions no longer cause an error in PCL internals.
1743 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1744 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1745 returning the number of octets which would be written to the
1746 file-stream. (thanks to Robert J. Macomber)
1747 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1748 arguments to the internal stream functions. (thanks to David
1750 * bug fix: stack exhaustion is now handled on the x86/SunOS
1751 platform. (thanks to Daisuke Homma)
1752 * bug fix: more accurate ROOM results on GENCGC platforms
1753 * optimization: improved type inference for arithmetic-for
1754 index variables in LOOP
1755 * optimization: faster floating-point SQRT on x86-64
1756 * fixed some bugs revealed by Paul Dietz' test suite:
1757 ** DOCUMENTATION returns NIL instead of "" for method combinations
1758 that don't have a docstring
1760 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1761 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1762 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1763 therefore are not customizeable by user code (as seems to be at
1764 least permitted and maybe required by AMOP). As a consolation,
1765 however, the SBCL implementation of these functions now calls
1766 REINITIALIZE-INSTANCE as specified by AMOP.
1767 * bug fix: slot-definition documentation is propagated as per ANSI
1768 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1769 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1770 argument, as do eslotd initialization methods. (from Pascal
1771 Costanza's "Closer" project)
1772 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1773 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1775 * bug fix: it is now possible to have more than one subclass of
1776 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1777 (reported by Bruno Haible, Pascal Costanza and others)
1778 * bug fix: the dependent update protocol now works for generic
1779 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1780 and Pascal Costanza)
1781 * bug fix: condition-class instances corresponding to
1782 DEFINE-CONDITION forms are now created eagerly. (reported by
1783 Kalle Olavi Niemitalo on comp.lang.lisp)
1784 * bug fix: floating point printing is more accurate in some
1785 circumstances. (thanks to Simon Alexander)
1786 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1787 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1788 * bug fix: callbacks on OS X now preserve stack-alignment.
1789 (thanks to Cyrus Harmon)
1790 * enhancement: the x86-64 disassembler is much better at
1791 disassembling SSE instructions. (thanks to Lutz Euler)
1792 * enhancement: CHECK-TYPE on a variable now allows type-inference
1793 (thanks to Vincent Arkesteijn)
1794 * optimization: improved performance of EUC-JP external format.
1795 (thanks to NIIMI Satoshi)
1796 * optimization: performance improvements to IO on file streams of
1797 :ELEMENT-TYPE CHARACTER
1798 * optimization: much faster memory allocation on x86-64
1799 * optimization: faster garbage collections (latency and throughput)
1801 * optimization: faster bignum subtraction and division on x86 and x86-64
1802 (thanks to Lutz Euler)
1803 * optimization: more accurate type-inference for loops that use a
1804 floating point index variable or a negative step.
1806 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1807 * bug fix: add a workaround to SBCL looping infinitely at startup on
1808 Linux kernels with apparently buggy implementations of personality().
1809 (thanks to Svein Ove Aas)
1810 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1811 (thanks to David Lichteblau)
1812 * bug fix: local bindings shadow global symbol macros for
1813 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1814 * optimization: non-open coded uses of numeric comparison operators
1815 (e.g. >) no longer cons when called with more than one parameter
1816 on platforms supporting dynamic-extent allocation.
1817 * enhancement: saving cores with foreign code loaded is now supported
1818 on MIPS/Linux in addition to the previously supported platforms.
1819 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1820 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1821 * bug fix: division by zero in sb-sprof when no samples were collected
1822 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1823 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1824 (thanks to Alexander Kjeldaas)
1825 * new feature: ignoring the return values of destructive functions
1826 like NREVERSE signals a compile-time style-warning.
1827 (thanks to Kevin Reid)
1828 * new feature: the alignment of alien structure fields can be
1829 explicitly specified. (thanks to Cyrus Harmon)
1830 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1831 and dump core on SIGQUIT
1833 ** incompatible change: threads do not inherit values of specials
1834 from their parents (see manual)
1835 ** bug fix: threads stacks belonging to dead threads are freed by the
1836 next exiting thread, no need to gc to collect thread stacks anymore
1837 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1838 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1839 ** bug fix: dynamic variable and thread start related gc lossage
1840 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1842 * fixed some bugs revealed by Paul Dietz' test suite:
1843 ** SUBTYPEP is slightly more accurate on heinously complicated
1844 CONS types where some of the members have uncertain (in the
1845 NIL, NIL sense) type relationships to each other.
1847 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1848 no longer purified unless :PURIFY T is explicitly specified.
1849 ** Non-purified cores are significantly smaller than before
1851 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1852 * new feature: timers based on Zach Beane's excellent timer package
1853 * added support for the following external formats: koi8-u,
1854 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1855 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1856 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1857 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1858 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1859 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1860 * incompatible change: a threaded SBCL will no longer revert to
1861 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1862 * bug fix: interrupts are disabled until startup is complete; no
1863 more sigsegvs when receiving a signal to soon
1864 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1866 * bug fix: add a workaround for the memory randomization features in
1867 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1868 workaround will only be in effect on systems with the proc filesystem
1870 * bug fix: printing objects of type HASH-TABLE signals a
1871 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1873 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1874 have been running for over 50 days. (reported by Gilbert Baumann)
1875 * bug fix: the logic for getting names of functions gets less
1876 confused when confronded with alternate-metaclass
1877 funcallable-instances. (reported by Cyrus Harmon)
1878 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1879 consistent, even on internal alternate-metaclass objects.
1880 * bug fix: flush closure information collected by physical
1881 environment analysis prepass before the main pass. (bug reported
1883 * bug fix: compiler pack phase does not modify a hashtable, which is
1884 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1885 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1886 may be expanded. (reported by Alexander <malishev> on c.l.l)
1887 * bug fix: no more style-warnings when compiling code using LAST
1888 under high-SPEED low-SPACE settings. (reported by David Wallin
1890 * fixed some incompatibilities between SBCL's MOP and the MOP
1892 ** the METAOBJECT class is now implemented;
1893 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1894 STANDARD-OBJECT, as required;
1895 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1896 now compatible (as required by VALIDATE-SUPERCLASS); there
1897 remains a consistency requirement over the presence or absence
1898 of the FUNCTION class in the superclass list of finalized
1899 classes; see the manual for more details;
1900 ** the :AROUND method for COMPUTE-SLOTS on
1901 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1902 requested slot ordering.
1904 ** bug fix: parent thread now can be gc'ed even with a live
1906 ** bug fix: binding a special with PROGV to no value is not
1907 the same as that symbol not having been bound (thanks to
1909 ** bug fix: binding specials is thread safe (thanks to
1911 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1912 and SB-SPROF do not die with 'no handler for signal XX in
1913 interrupt_handle_now(..)' anymore
1914 ** bug fix: WITH-TIMEOUT works with multiple running threads
1915 * fixed some bugs revealed by Paul Dietz' test suite:
1916 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1917 the :method-class keyword argument.
1919 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1920 * new port: the Solaris operating system on x86 processors is now
1921 mostly supported, though some rough edges in the environment
1922 remain. (thanks to Daisuke Homma)
1923 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1924 space for its heap. (thanks to Thiemo Seufer)
1925 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1926 closures. (thanks to Thiemo Seufer)
1927 * minor incompatible change: eof selects abort in the debugger.
1928 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1929 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1931 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1932 deprecated, and will go away in a future revision of SBCL.
1933 * minor incompatible change: GC-ON and GC-OFF are no longer
1934 implemented with a counter, it does not matter how many times gc
1935 is switched on or off
1936 * bug fix: discriminating functions for generic function classes
1937 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1938 make invalid assumptions about method precedence order. (reported
1940 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1941 platforms. (thanks to Thiemo Seufer)
1942 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1943 * bug fix: correct pathname printing with printer escaping is on.
1944 (thanks to Kevin Reid)
1945 * bug fix: complex VOP definitions in "user-space" no longer trigger
1946 package locks. (reported by Zach Beane)
1947 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1948 for funcallable-instance functions, and is no different from
1950 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1951 characters in the current readtable. (reported by Nicholas Neuss)
1952 * bug fix: SUBTYPEP on various CONS types returns more a more
1953 accurate acknowledgment of its certainty.
1954 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1955 lists in some cases. This partially fixes bug 384.
1956 * flush all standard streams before prompting in the REPL and the
1958 * bug fix: signal handling and triggering gc do not conflict
1959 directly anymore, in particular a high frequency sb-sprof does
1960 not prevent gc from running
1961 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1962 approximation for timezone and DST information between the
1963 universal time epoch and the smallest negative 32-bit time_t.
1964 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1965 year 1899 so long as the encoded time is non-negative.
1966 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1967 the correct answer for non-constant rotate amounts when performing
1968 an inline 32-bit rotation.
1970 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1971 there is only one thread in the session
1972 ** bug fix: memory leak for streams created in one thread and
1973 written to in another
1974 ** bug fix: lockup when compiled with gcc4
1975 ** bug fix: race that allows the gc to be triggered when gc is
1977 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1978 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1980 ** bug fix: finished threads are gc'ed properly
1981 * fixed some bugs revealed by Paul Dietz' test suite:
1982 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1983 has arguments with a different set of applicable methods from
1984 the orignal arguments.
1985 ** The type error thrown by MAP now has a correct expected-type
1987 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1988 name a compiled function.
1989 ** Three MISC tests where a large bignum was improperly coerced to
1990 a float that couldn't represent that bignum during type
1991 derivation were fixed.
1992 ** SUBTYPEP can now handle types involving the negation of a
1993 list-form FUNCTION type.
1994 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1995 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1996 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1998 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1999 * New feature: Experimental support for bivalent streams: streams
2000 opened with :element-type :default now allow character and binary
2001 (unsigned-byte 8) I/O
2002 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2003 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2005 * bug fix: no more highly sporadic "couldn't check whether ~S is
2006 readable" when reading a stream and an interrupt hits in the middle
2007 of a select system call
2008 * compiler better recognizes complex arrays (reported by Eduardo
2010 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2011 for variables on SBCL built with linkage-tables. (reported by Luis
2013 * various error reporting improvements.
2014 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2015 (Thanks to Thiemo Seufer)
2016 * bug fix: nested reader invokations work correctly
2017 * bug fix: it is possible to have simultaneous references to foreign
2018 code and foreign data with the same name.
2020 ** added x86-64 support
2021 ** incompatible change: the threading api now works with thread
2022 objects instead of thread ids
2023 ** bug fix: threads are protected from signals and interruption when
2024 starting up or going down
2025 ** bug fix: a race where an exiting thread could lose its stack to gc
2026 ** bug fix: don't halt on infinite error in threads if possible
2027 ** fixed numerous gc deadlocks introduced in the pthread merge
2028 ** bug fix: fixed thread safety issues in read and print
2029 ** bug fix: debugger doesn't hang on session lock if interrupted at
2030 an inappropriate moment
2031 ** bug fix: run-program is now thread safe(r)
2032 ** bug fix: inner with-recursive-lock no longer releases the mutex
2033 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2034 * fixed some bugs revealed by Paul Dietz' test suite:
2035 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2036 EXPECTED-TYPE slots filled.
2037 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2039 ** MAKE-CONDITION accepts classes as type-designators.
2040 ** COMPILE may never return NIL.
2041 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2042 range before calling Unix time functions
2044 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2045 * numerous signal handling fixes to increase stability
2046 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2047 * minor incompatible change: we now correctly canonize default
2048 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2049 as per the MOP, rather than the historical (INITARG INITFUNCTION
2050 INITFORM). (reported by Bruno Haible)
2051 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2052 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2053 for more information.
2054 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2055 pathname is a directory pathname.
2056 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2057 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2059 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2060 :METACLASS argument in addition to a class name. (reported by
2061 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2062 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2063 (reported by Bruno Haible; patch from Gerd Moellmann)
2064 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2066 * bug fix: more cleanups to the floating point exception handling on
2067 x86-64 (thanks to James Knight)
2068 * bug fix: the compiler does not try to constant fold calls of
2069 COERCE and BIT-* functions when they return freshly constructed
2070 objects. (reported by Nikodemus Siivola and Paul Dietz)
2071 * optimization: improved the MIPS versions of generic (in the
2072 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2073 * optimization: direct conversion of (unsigned-byte 32) to floats on
2074 the PowerPC platform.
2075 * optimization: structure instances with raw slots now use less
2076 memory, and probably show better memory locality. (thanks to
2078 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2079 are treated as requests for stack allocation on the x86-64,
2080 Alpha-32, PPC and SPARC platforms.
2081 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2082 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2083 (thanks to Tony Martinez)
2085 ** gcing a dead thread can no longer lead to lockups
2086 ** threads block signals until they are set up properly
2087 ** errno is no longer shared by threads
2088 ** interrupt-thread restores the eflags register on x86
2089 ** fixed some lockups due to gc/thread interaction
2090 * fixed some bugs revealed by Paul Dietz' test suite:
2091 ** invalid dotted lists no longer raise a read error when
2092 *READ-SUPPRESS* is T
2093 ** signal an error if a symbol that names a declaration is used
2094 as the name of a type, or vice versa
2095 ** allow using the (declare (typespec var*)) abbreviation for
2096 (declare (type typespec var*)) with all type specifiers
2097 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2098 ** always return NIL from PPRINT-POP when OBJECT is NIL
2099 ** don't signal errors when pretty-printing malformed LABELS,
2100 FLET or MACROLET forms
2101 ** declarations in a DOLIST body are also in scope for the
2103 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2105 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2108 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2109 * fixed cross-compiler leakages that prevented building a 32-bit
2110 target with a 64-bit host compiler.
2111 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2112 opened with :IF-EXISTS :OVERWRITE.
2113 * fixed bug 281: error for an invalid qualifier in a short-form method
2114 combination method is not signalled until the faulty method is called.
2115 * bug fix: iteration variable type inferrer failed to deal with open
2116 intervals. (reported by Alan Shields)
2117 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2118 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2119 or more runtime options were provided to the sbcl binary.
2120 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2121 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2122 * optimization: there's now a fast-path for fixnum arguments in the
2123 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2124 * optimization: the code generated on x86-64 is more compact thanks
2125 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2126 * bug fix: floating-point exception handling now partly works on
2127 x86-64. (Thanks to James Knight)
2128 * improvement to the MIPS backend from Thiemo Seufer: C-style
2129 64-bit long long arguments and return values to alien functions
2131 * fixed some bugs revealed by Paul Dietz' test suite:
2132 ** the type-error signalled from WARN has a filled-in DATUM slot.
2133 ** the type-error required when a stream is not associated with
2134 a file has the stream as its datum.
2135 ** type-errors on single-floats on x86-64 no longer have
2136 :INVALID-OBJECT as the datum
2137 ** the type-errors signalled for invalid function names now have
2138 a correct expected type
2139 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2140 for structures defined with a :TYPE. Documentation strings for
2141 typed structures are no longer immediately discarded
2142 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2143 broadcast streams and synonym streams. FILE-LENGTH now also works
2144 on broadcast streams.
2146 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2147 * incompatible change: the --noprogrammer option, deprecated since
2148 version 0.7.5, has been removed. Please use the equivalent
2149 --disable-debugger option instead.
2150 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2152 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2153 inoperational for a while now) has been completely removed.
2154 * null lexical environments are now printed as #<NULL-LEXENV>,
2155 significantly reducing the amount of clutter in typical backtraces.
2156 * documentation on weak pointers, finalization, and after GC hooks
2157 has been added to the manual.
2158 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2159 as other specialized array types, is much faster. SUBSEQ and
2160 COPY-SEQ on such arrays have also been sped up.
2161 * optimization: EQL is now more efficient when at least other argument
2162 is known to be of type (OR FIXNUM (NOT NUMBER)).
2163 * fixed bug: the runtime is now less vulnerable to changes in the
2164 size of the SBCL object on OS X, and virtual memory is reserved for
2165 all spaces that need to be at a fixed address.
2166 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2167 * fixed bug: finalizers and after GC hooks that cause consing are now
2169 * fixed bug: compiler error messages and summaries are now printed to
2170 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2171 * fixed inference of the upper bound of an iteration variable.
2172 (reported by Rajat Datta).
2173 * fixed bug 211e: calling local functions with duplicated constant
2174 keyword argument no longer causes a bogus style warning about an
2176 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2177 ftype declaration to be disregarded. (reported by Dave Roberts)
2178 * fixed bug 373: caused by erronous compilation of references to alien
2179 variables in the runtime on ppc/darwin.
2180 * fixed bug 376: CONJUGATE type deriver.
2181 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2182 (reported by Baughn on #lisp)
2183 * a cross-compiler bug on non-x86 platforms has been identified and
2184 fixed. (thanks to Bruno Haible)
2185 * improvements to the MIPS runtime code for increased stability.
2186 (thanks to Thiemo Seufer)
2187 * increased the maximimum compact environment size to allow
2188 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2189 * partial workaround for bug 135: don't name the function we're
2190 calling for hairy cases of EVAL, so as not to accumulate one environment
2191 entry per call to EVAL. (reported by Kevin Reid)
2192 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2193 * optimization: type testing for non-vector arrays should be faster.
2194 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2196 * bug fix: setting 31st element of a bit vector to zero did not work
2198 * bug fix: redefining a class definition which failed due to a
2199 previous accessor / function clash now works (but see BUGS entry
2200 #380 for more problems in this area). (thanks to Zach Beane)
2201 * the long form of DEFINE-METHOD-COMBINATION disables method group
2202 checking when given a single method group with pattern *. (thanks
2204 * on x86 compiler supports stack allocation of results of simple
2205 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2206 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2207 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2208 * fixed some bugs related to Unicode integration:
2209 ** the restarts for recovering from input and output encoding
2210 errors only appear when there is in fact such an error to
2212 * fixed some bugs revealed by Paul Dietz' test suite:
2213 ** MISC.549 and similar: late transformation of unsafe type
2214 assertions into derived types caused unexpected code
2216 ** SCALE-FLOAT type deriver is less wrong.
2217 ** type derivers for EXP, LOG and similar functions compute result
2218 types for complex arguments better.
2219 ** (MISC.563) CONJUGATE type deriver works for very restricted
2221 ** out-of-line type testers for character strings are available.
2222 ** EQUAL compiler transform understands specialness of objects
2224 ** accessing double-floats stored on the stack now works on x86-64.
2225 ** debugger internals could sometimes create invalid lispobjs,
2226 resulting in GC crashes.
2227 ** MISC.548: type check weakening can convert required type into
2229 ** initialization forms for bindings are not in scope of free special
2232 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2233 * incompatible change: thread support for non-NPTL systems has
2234 been removed - locking is buggy and unreliable. A threaded
2235 SBCL build will now warn at startup and refuse to create
2236 new threads, unless futex support is detected in the kernel
2237 * incompatible change: the top level REPL now has only an ABORT
2238 restart associated with it, not TOPLEVEL and ABORT as it used to.
2239 TOP and TOPLEVEL are now available as debugger commands for
2240 returning to the top level.
2241 * incompatible change: forms evaluated in the REPL now use the
2242 global optimization policy.
2243 * incompatible change: user- and system-initialization files are
2244 no longer processed with LOAD, but by READ and EVAL; hence the
2245 global optimization policy, startup package, readtable, etc,
2247 * The .fasl file format number has been incremented because of
2248 various incompatible changes.
2249 * internal entry point details and argument counts no longer appear
2250 in backtraces unless explicitly requested by setting
2251 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2252 * built-in and standard functions no longer have names like "top
2253 level local call to FOO".
2254 * fixed bug 32: functions defined in non-null lexical environments
2255 now have more legible printed representation
2256 * fixed bug 33: functions defined in non-null lexical environemnts
2257 are now more amenable to inspection by INSPECT.
2258 * workaround for bug 354: XEPs no longer appear in backtraces unless
2259 explicitly requested.
2260 * fixed bug: receiving the signal which results from attempting to
2261 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2262 SIGBUS on other *BSDs) on architectures where the C stack is also
2263 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2264 to debugger confusion or wild instability. (reported by Cheuksan
2266 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2267 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2268 (reported by Lutz Euler)
2269 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2270 compiled code. (reported by Paul Dietz)
2271 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2272 specialized parameter to a method to something that is not TYPEP
2273 the specializer is now possible.
2274 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2275 face of package deletion.
2276 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2277 pathname. (reported by David Tolpin on c.l.l)
2278 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2279 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2280 STRING-STREAM and FILE-STREAM, respectively.
2281 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2282 than previously; in addition, its test suite is now run on build.
2283 (thanks to Luke Gorrie)
2284 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2285 * optimization: added a immediate representation for single-floats
2287 * fixed some bugs revealed by Paul Dietz' test suite:
2288 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2289 ** attempting to create a package with a colliding nickname causes
2290 correctable errors to be signalled.
2291 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2292 ** several x86-64 backend bugs related to sign-extension of immediate
2295 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2296 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2297 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2299 * fixed loading of multiply forward-referenced layouts.
2300 (thanks to Cheuksan Wang)
2301 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2302 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2303 (see COMPILE-FILE documentation for details of :PRINT option)
2304 * fixed bugs 19 and 317: fixed-format floating point printing is
2305 more accurate. This also fixes a bug reported by Adam Warner
2306 related to the ~@F format directive.
2307 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2309 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2310 dispatch table if the from-char is a dispatch macro character.
2311 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2312 by the wordsize no longer ignore the last word. (reported by Lutz
2314 * fixed bug in type checking of dynamic-extent variables. (reported
2316 * optimization: sequence traversal functions use their freedom to
2317 coerce function designators to functions.
2318 * optimization: code with many calls to CLOS methods specialized on
2319 CLOS classes has had redundant type checks removed.
2320 * optimization: added declarations to speed up operations that access
2321 the internal character database (for example STRING-UPCASE)
2322 * optimization: comparison operations between floats and sufficiently small
2323 fixnums no longer create extra rationals
2324 * fixed some bugs related to Unicode integration:
2325 ** portions of multibyte characters at the end of buffers for
2326 character-based file input are correctly transferred to the
2327 start of the buffer at the next read.
2328 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2329 passing it through to OPEN.
2330 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2331 argument given to internal calls to OPEN.
2332 ** the built-in comment readers (introduced by character sequences
2333 ";" and "#|") are more forgiving to encoding errors; they will
2334 STYLE-WARN and then attempt to resync the stream at a character
2335 boundary. (thanks to Teemu Kalvas)
2336 * fixed some bugs in the x86-64 port:
2337 ** Negative short int return values from c-calls are sign-extended
2339 ** The stack is aligned to 16-bytes for c-calls, as required by
2340 the ABI. (thanks to Cheuksan Wang)
2341 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2342 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2343 for enums. (thanks to Vincent Arkesteijn)
2344 ** Multiple small optimizations and bugfixes for floating point
2346 * fixed some bugs revealed by Paul Dietz' test suite:
2347 ** Space, Tab, Linefeed, Return and Page have the invalid
2348 secondary constituent character trait.
2349 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2351 ** WITH-INPUT-FROM-STRING should only update the index place on
2353 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2354 works more reliably.
2355 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2356 with one-dimensional arrays with fill pointers.
2357 ** TYPE-OF failed on a complex with an integer realpart and a
2359 ** compiler failure during type inference for the code of form
2360 (IF (EQL X (THE ...)) ...) (MISC.535).
2362 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2363 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2364 platform. The port supports 61-bit fixnums, large memory spaces
2365 and reloading shared object files.
2366 * enhancement: saving cores with foreign code loaded is now
2367 supported on ppc/Darwin in addition to the previously supported
2369 * enhancement: the statistical profiler now walks deeper into the
2370 call stack for more meaningful call-graphs and accrued time
2371 reports (x86/x86-64 only). It also now reports time spent in
2373 * enhancement: it is now possible to trace most individual methods
2374 of a generic function in addition to tracing the generic function
2376 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2378 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2379 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2380 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2381 produces an error. (thanks to Vincent Arkesteijn)
2382 * bug fix: NAMESTRING on pathnames with :WILD components in their
2383 directories works correctly. (thanks to Artem V. Andreev)
2384 * fixed bug 125: compiler preserves identity of closures. (reported
2386 * bug fixed: functions with &REST arguments sometimes failed with
2387 "Undefined function" when compiled with (DEBUG 3). (reported by
2389 * bug fix: overflow during compiling of setting element of a bit
2390 vector with constant index and value. (reported by Timmy Douglas)
2391 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2392 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2393 * on x86 compiler partially supports stack allocation of dynamic-extent
2395 * GO and RETURN-FROM do not check the extent of their exit points
2396 when compiled with SAFETY 0.
2397 * fixed some bugs related to Unicode integration:
2398 ** encoding and decoding errors are now much more robustly
2399 handled; it should now be possible to recover even from invalid
2400 input or output to the terminal. (thanks to Teemu Kalvas)
2401 ** provided a first cut at implementing STRING-TO-OCTETS and
2402 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2403 ** altered the SB-MD5 contributed module slightly, changing the
2404 interface just enough for it to be supportable for builds where
2405 lisp characters are not eight bits.
2406 * fixed some bugs revealed by Paul Dietz' test suite:
2407 ** the FORMATTER-generated functions for ~V[ conditionals require
2408 the correct number of arguments.
2409 ** READ-FROM-STRING returns the mandated second value when applied
2410 to displaced strings.
2411 ** the #\Rubout and #\Backspace characters are treated as invalid
2412 constituent characters by the tokenizer.
2414 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2415 * new feature: reloading changed shared object files with
2416 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2417 * new feature: references to foreign variables and functions
2418 can now be compiled and loaded before the corresponding shared
2419 object file is loaded, as long as the foreign definitions are
2420 available at runtime.
2421 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2422 supported. (thanks to Dan Debertin)
2423 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2424 just keywords. (thanks to Vincent Arkesteijn)
2425 * fixed bug #331: structure-class instances corresponding to
2426 DEFSTRUCT forms are now created eagerly.
2427 * fixed bug #345: backtraces from calls to undefined functions work
2428 on x86 as well. Related bug #61 is now also partially fixed on x86
2429 (backtraces from throws to unknown catch tags.)
2430 * bug fix: lambda-list parsing is now stricter vrt. order and number
2431 of lambda-list keywords.
2432 * bug fix: as specified by AMOP, an error is signalled if a
2433 class-option appears multiple times in a DEFCLASS form. (reported
2435 * bug fix: RANDOM can be compiled when the compiler derives the type
2436 of its numeric argument as a disjoint set of small integers.
2437 (reported by Paul Dietz)
2438 * bug fix: starting a core saved with shared objects loaded when
2439 those objects are not available no longer causes threaded SBCL to
2440 hang. (reported by Sean Ross)
2441 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2443 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2444 argument, which must always be NIL. (reported by Kalle Niemitalo)
2445 * bug fix: printing 1.0d+23 no longer results in an error.
2446 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2447 * bug fix: structure slot setters preserve evaluation order. (thanks
2449 * fixed some bugs related to Unicode integration:
2450 ** RUN-PROGRAM can allow its child to take input from a Lisp
2451 stream. (reported by Stefan Scholl)
2452 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2453 locales. (reported by Ken Causey)
2454 * fixed some bugs revealed by Paul Dietz' test suite:
2455 ** INCF, DECF and REMF evaluate their place form as specified in
2457 ** FORMATTER expands ~{ ~} iteration directives with V or #
2458 parameters correctly.
2459 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2460 consequent uses no arguments correctly.
2461 ** the system has a partial understanding of the (COMPLEX RATIO)
2463 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2466 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2467 * new feature: a build-time option (controlled by the :SB-UNICODE
2468 keyword feature, enabled by default) for building the system with
2469 support for the entire 21-bit character space defined by the
2471 * new feature: the system now has rudimentary external-format
2472 support; the primary user-visible change at this time is that
2473 characters with the high bit set (such as lower-case-e-acute) will
2474 print correctly to a terminal in a UTF-8 environment.
2475 * minor incompatible change: BASE-CHAR no longer names a class;
2476 however, CHARACTER continues to do so, as required by ANSI.
2477 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2478 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2479 has been moved to the SB-EXT package (temporarily re-exported from
2481 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2482 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2484 * fixed bug #351: better error-handlind and reporting for malformed
2486 * fixed bug #350: bignum-printing is now more memory-efficient,
2487 allowing printing of very large bignums, eg. (expt 2 10000000).
2488 (reported by Bruno Haible)
2489 * fixed bug #302: better primitive-type selection for intersection
2491 * fixed bug #308: non-graphic characters now all have names, as
2492 required. (reported by Bruno Haible)
2493 * bug fix: redefining a class with different superclasses now correctly
2494 removes it from the direct-subclasses of its previous superclasses.
2495 (reported by David Morse)
2496 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2497 new value now works. (reported by Bruno Haible)
2498 * bug fix: correct canonicalization of multiple non-standard slot
2499 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2500 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2501 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2502 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2503 now exists, an signals an error.
2504 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2505 during macroexpansion for non-iteration variables as well. (reported
2506 by Bruno Haible for CMUCL)
2507 * bug fix: Cyclic structures and unprintable objects in compiler
2508 messages no longer cause errors. (reported by Bruno Haible)
2509 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2510 and READ-FROM-STRING all now return a primary value of NIL if
2511 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2512 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2513 (reported by Bruno Haible for CMUCL)
2514 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2515 do not designate a condition. (reported by Bruno Haible for
2517 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2518 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2519 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2520 permitting resolution in favour of any of the conflicting symbols.
2521 (reported by Bruno Haible for CMUCL)
2522 * bug fix: EQUAL compiler optimizations is less aggressive on
2523 strings which can potentially compare true despite having distinct
2524 specialized array element types.
2525 * bug fix: unit enumerations can be defined without dividing by
2526 zero. (thanks to Vincent Arkesteijn)
2527 * FORMAT compile-time argument count checking has been enhanced.
2528 (report from Bruno Haible for CMUCL)
2529 * a partial workaround for the bug 262: the compiler does not try to
2530 inline-expand a local function doing RETURN-FROM from a deleted
2531 BLOCK. (thanks to Peter Denno for the bug report and to David
2532 Wragg for the simple test case)
2533 * fixed some bugs revealed by Paul Dietz' test suite:
2534 ** RENAME-PACKAGE allows all package designators as new package
2536 ** constraint propagation and lambda variable substitution are
2537 more cautious in dealing with partially deleted code.
2538 ** compiler sometimes lost reoptimization passes.
2539 ** CERROR, given a condition as condition designator, passes its
2540 remaining arguments to the continue format control without
2542 ** Case-altering FORMAT directives work correctly on non-ASCII
2544 ** The REAL type specifier handles bounds outside the floating
2545 point ranges without signalling FLOATING-POINT-OVERFLOW.
2546 ** Functions with IR1-transformations can create intercomponent
2547 references to global functions.
2548 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2550 ** FORMAT ~R treats a nil value for its first parameter correctly.
2552 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2553 * enhancement: saving cores with foreign code loaded is now
2554 supported on x86/NetBSD and sparc/Linux in addition to the previously
2555 supported platforms.
2556 * bug fix: on some platforms repeated installations caused multiple
2557 copies of HTML documentation to be installed -- should not happen
2558 any more. (reported by Stefan Scholl)
2559 * bug fix: parsing self-recursive alien record types multiple times
2560 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2561 original patch by Helmut Eller for CMUCL)
2562 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2563 (thanks to Richard Kreuter)
2564 * bug fix: defining classes whose accessors are methods on existing
2565 generic functions in other (locked) packages no longer signals
2566 bogus package lock violations. (reported by François-René Rideau)
2567 * bug fix: special variables as DEFMETHOD parameters no longer have
2568 associated bogus type declarations. (reported by David Wragg and
2570 * bug fix: read-write consistency on streams of element-type
2571 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2572 * bug fix: redefiniton of the only method of a generic function with
2573 no DEFGENERIC no longer emits a full WARNING. In addition,
2574 redefinition of generic functions with no DEFGENERIC to an
2575 incompatible lambda list now signals an error. (thanks to Zach
2577 * bug fix: DEFGENERIC now works even when there's a function of the
2578 same name in an enclosing lexical environment. (thanks to Zach
2580 * fixed compiler failure, caused by instrumenting code during
2581 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2582 * optimization: added loop analysis and improved register allocation
2583 * fixed some bugs revealed by Paul Dietz' test suite:
2584 ** POSITION on displaced vectors with non-zero displacement
2585 returns the right answer.
2586 ** (SIMPLE-STRING) is a valid type specifier for sequence
2588 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2590 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2591 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2593 ** The justification version of the FORMAT ~< directive treats
2594 non-zero minpad parameter correctly.
2596 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2597 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2598 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2599 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2600 the supported interface.
2601 * new feature: Single-stepping of code compiled with DEBUG 2 or
2602 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2603 * new feature: saving cores with foreign code loaded is now
2604 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2605 Timothy Moore's work for CMUCL)
2606 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2607 parameters to * instead of NIL if no initform is supplied.
2608 (reported by Johan Bockgaard)
2609 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2610 correctly when FUNCALL appears as the car of the form. Note:
2611 despite this FUNCALL forms are not currently subject to
2612 compiler-macro expansion. (port of Raymond Toy's fix for the
2613 same from CMUCL, reported by Johan Bockgaard)
2614 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2615 (thanks for Teemu Kalvas)
2616 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2617 case instead of terminating the iteration (thanks for Julian
2618 Squires, Sean Champ and Raymond Toy)
2619 * bug fix: incorrect expansion of defgeneric that caused a style
2620 warning. (thanks for Zach Beane)
2621 * bug fix: slot accessor effective method computation works properly
2622 for classes with multiple non-standard applicable methods on
2623 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2624 * on x86 compiler supports stack allocation of results of LIST and
2625 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2626 CMUCL implementation by Gerd Moellmann)
2627 * fixed some bugs revealed by Paul Dietz' test suite:
2628 ** FORMAT strings with both the ~<~:;~> form of the justification
2629 directive and pretty-printing directives cause an error.
2631 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2632 * incompatible change: the internal functions
2633 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2634 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2635 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2636 instead of the old functions.
2637 * new feature: on platforms where "dladdr" is available foreign
2638 function names now appear in backtraces. (based on Helmut Eller's
2640 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2641 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2643 * documentation: ASDF manual is now distributed with SBCL.
2644 * bug fix: SBCL can now load its contributed modules with REQUIRE
2645 even if the system-provided entries have been removed from
2646 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2648 * bug fix: backtraces involving undefined functions or assembly
2649 routines are more informative. (thanks to Brian Downing)
2650 * bug fix: mutually referent alien structures now work correctly.
2651 (reported by Rick Taube)
2652 * bug fix: structures defined by WITH-ALIEN can be referred to
2653 within other definitions in the same WITH-ALIEN.
2654 * bug fix: division operators (MOD, TRUNCATE and the like) with
2655 constant zero divisors and integer dividends no longer generate
2657 * bug fix: provide default methods for INPUT-STREAM-P and
2658 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2659 * bug fix: improve the detection and resolution of MOP metacycles
2660 (where effective method computation depends on the generic function
2661 having its effective method computed). (reported by Bruno Haible)
2662 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2663 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2664 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2665 * bug fix: pathnames with relative directory components can be
2666 represented relative to default pathnames.
2667 * optimization: in taking the GCD of bignums, reduce the two bignums
2668 to approximately the same size (using Euclid's algorithm) before
2669 applying the more sophisticated binary GCD. (thanks to Juho
2671 * optimization: COUNT on bitvectors now operates word-at-a-time.
2672 * optimization: ASH with a positive, but not necessarily constant,
2673 (leftwards) shift, when in a modular context, is compiled to a
2675 * fixed some bugs revealed by Paul Dietz' test suite:
2676 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2677 if the corresponding argument is NIL.
2678 ** FORMAT directives accepting a minpad parameter treat negative
2680 ** literal commas as character parameters to FORMAT directives are
2682 ** literal spaces directly after ~<Newline> directives within a
2683 format-logical-block (~:< ~@:>) do not induce :FILL-style
2684 conditional newlines.
2685 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2686 as specified: it no longer includes conditional newlines).
2687 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2689 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2690 :PER-LINE-PREFIX argument does not evaluate to a string.
2692 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2693 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2694 the manual for details; for now, package locks can be disabled by
2695 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2696 if no major problems are found then it is likely that they will be
2697 compiled in unconditionally.
2698 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2699 unsupported operators on all platforms. To load a shared library
2700 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2701 object file, link it into a shared library outside of SBCL and
2702 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2704 * bug workaround: ROOM T and the GC were not working together
2705 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2706 reporting facility aren't preserved. That reporting has been
2707 disabled, so now until and unless someone figures out how to make it
2708 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2709 * minor incompatible change: as threatened around sbcl-0.8.0, the
2710 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2711 The symbols are also exported from SB-PCL for backwards
2712 compatibility, but more so than before SB-PCL should be treated as
2713 an implementation-internal package.
2714 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2716 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2717 It is known as of this release not to work on the Alpha, however.
2718 * fixed bug #167: errors signalled due to illegal syntax in method
2719 bodies are now more legible.
2720 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2721 designators and can hence be used with TYPEP.
2722 * fixed bug #333: CHECK-TYPE now ensures that the type error
2723 signalled, if any, has the right object to be accessed by
2724 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2725 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2726 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2728 * fixed bug #334: programmatic addition of slots using specialized
2729 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2730 and :ALLOCATION :CLASS slots.
2731 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2732 float exponents. (rereported by Peter Seibel)
2733 * fixed a bug: #\Space (and other whitespace characters) are no
2734 longer considered to be macro characters in standard syntax by
2735 GET-MACRO-CHARACTER.
2736 * fixed bug: initialization of condition class metaobjects no longer
2737 causes an instance of the condition to be created. (reported by
2739 * fixed bug: it is now possible to have slots such that
2740 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2741 description is neither :INSTANCE nor :CLASS.
2742 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2743 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2744 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2745 non-standard SLOT-DEFINITION-ALLOCATION values.
2746 * fixed bugs: various race conditions handling exiting threads.
2747 CL-PPCRE's thread torture test now passes.
2748 * fixed arguably-a-bug: GC time proportional to number of threads in
2749 system even when most of them are idle
2750 * optimization: improved performance of BIT and SBIT on bit-vectors.
2751 * .fasl file incompatibility: The fasl file version number has
2752 been incremented because of changes associated with package locks.
2754 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2755 * minor incompatible change: the system no longer provides
2756 optimization hints (conditions which are TYPEP
2757 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2758 mode; these hints are still emitted when higher SPEED optimization
2760 * new contrib module: a sampling profiler (profiling by statistical
2761 sampling, rather than by instrumenting functions) is available as
2762 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2763 * the behaviour of the standard function ED is now customizeable by
2764 third parties through a hook variable: see ED's documentation
2765 string for information on the protocol.
2766 * the compiler no longer emits efficiency notes for (FUNCALL X)
2767 when the type of X is uncertain under default optimization
2769 * fixed bug 276: mutating a binding of a specialized parameter to a
2770 method to something that is not TYPEP the specializer is now
2772 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2773 exhibit the required behaviour on the x86 platform. (thanks to
2774 Peter van Eynde, Eric Marsden and Bruno Haible)
2775 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2776 even for difficult arguments. (reported by Peter Graves)
2777 * fixed bug 141a: the backquote printer now descends quoted
2779 * fixed another bug in backquote printing: no more destructive
2780 modification of the form's list structure. (reported by Brian
2782 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2783 move between its address being taken and the call to
2784 interrupt_thread, fixing a crashing race condition.
2785 * the SB-POSIX contrib implementation has been adjusted so that it
2786 no longer exhibits ridiculously poor performance when constructing
2787 instances corresponding to C structs.
2789 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2790 * minor incompatible change: the sb-grovel contrib now treats C
2791 structures as alien (in the sense of SB-ALIEN) objects rather than
2792 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2793 has implications for memory management of client code
2794 (sb-grovel-returned objects must now be manually managed) and for
2795 type safety (alien objects now have full types).
2796 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2797 used to control emission of compiler diagnostics, rather than the
2798 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2799 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2800 quality should be considered deprecated.
2801 * install.sh now installs the user manual as well
2802 * (not quite a new documentable feature, but worth considering in
2803 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2804 beginnings of a semantically meaningful condition hierarchy is
2805 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2807 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2808 designator as the defaults argument.
2809 * fixed bug: Displaced arrays whose displaced-to array has become
2810 too small now cause ARRAY-DIMENSION to signal an error, providing
2811 for safer bounds-checking. (reported by Bruno Haible)
2812 * fixed bug: DEFCLASS slot definitions with identical :READER and
2813 :WRITER names now signal a reasonable error. (reported by Thomas
2815 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2817 * fixed bug: Invalid slot specification errors now print correctly.
2818 (thanks to Zach Beane)
2819 * fixed bug 320: Shared to local slot value transfers in class
2820 redefinitions now happen corrently from superclasses as
2821 well. (reported by Bruno Haible)
2822 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2824 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2825 improper lists correctly. (reported by Bruno Haible)
2826 * fixed bug 313: source-transform for <fun-name> was erroneously
2827 applied to a call of a value of a variable with name <fun-name>.
2828 (reported by Antonio Menezes Leitao)
2829 * fixed bug 307: The obsolete instance protocol ensures that
2830 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2831 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2832 remove dead unknown-values globs from the middle of the stack.
2833 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2834 easier to resume long computations after using *BREAK-ON-SIGNALS*
2835 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2836 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2837 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2838 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2839 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2840 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2842 * fixed a (fairly theoretical) bug in string printing: if
2843 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2844 does not have array-element-type equal to the most general string
2846 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2847 function name. (thanks to Nikodemus Siivola)
2848 * fixed bug: compile-time format string checker failed on
2849 non-closed ~{. (reported by Thomas F Burdick)
2850 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2851 don't warn on legal loop code involving more than one aggregate
2852 boolean. (thanks to Nikodemus Siivola)
2853 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2854 in keyword position to MAKE-PACKAGE was not being reported as
2856 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2857 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2859 * fixed bugs 280 and 312: the checking for multiple definitions in a
2860 file is less likely to become confused by uses of inline
2862 * fixed bug: the #S reader macro performs the keyword coercion
2863 specified for slot names. (reported by Kalle Niemitalo)
2864 * fixed bug: lambda lists may contain symbols whose names start with
2865 & but are not lambda-list-keywords; their occurrence triggers a
2867 * fixed bug 321: define-method-combination argument lambda lists do
2868 not cause invalid code to be generated when &optional or &aux
2869 variables have default values. (reported by Bruno Haible)
2870 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2871 have CLOS classes; this appears also to have fixed reported
2872 instability in stack exhaustion detection.
2873 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2874 MUFFLE-WARNING when no associated restart is present is now
2876 * optimization: rearranged the expansion of various defining macros
2877 so that each expands into only one top-level form in a
2878 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2880 * optimization: used a previously little-used slot in symbols to
2881 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2883 * fixed some bugs revealed by Paul Dietz' test suite:
2884 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2886 ** Fixed an optimization bug related to inheritance of initforms
2887 from local to shared slots.
2888 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2889 ** CAST optimizer forgot to flush argument derived type.
2890 ** print/read consistency on floats is now orders of magnitude
2891 more likely. (thanks also to Bruno Haible for a similar report
2893 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2894 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2895 for objects of type REAL. Make it so.
2896 ** SXHASH is specified (infelicitously) to respect similarity,
2897 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2898 it so. (thanks to Markus Ziegler)
2899 ** on the Alpha, the compiler succeeds in compiling functions
2900 returning a known number of arguments greater than 63.
2901 ** fixed handling of invalid NIL arguments in keyword position
2903 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2905 ** provided a readably-printable representation for RANDOM-STATE
2907 ** ensured that pathnames, where they have a namestring, always
2908 print using #P"..." syntax.
2910 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2911 * Support for the forthcoming 2.0 version of the NetBSD kernel
2912 running on x86 hardware has been added. (thanks to Perry
2913 E. Metzger most immediately, and others for their past work)
2914 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2915 current release version; SBCL's OpenBSD support had been broken
2916 since about the time of OpenBSD's switch to ELF binary format.)
2917 * [placeholder for DX summary]
2918 ** user code with &REST lists declared dynamic-extent, under high
2919 speed or space and low safety and debug optimization policy.
2920 * The manual has been converted to Texinfo format and the debugger
2921 chapter from the cmucl manual has been added.
2922 * A facility has been added to extract documentation strings from
2923 sbcl and store them as Texinfo-formatted snippets for inclusion in
2924 the manual (via Texinfo's @include directive)
2925 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2926 the test case to Dave Roberts)
2927 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2928 pointers. (reported by Sean Ross)
2929 * bug fix: PROFILE output is printed nicely even for large numerical
2930 values. (thanks to Zach Beane)
2931 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2932 greater than 32 handle EOF correctly.
2933 * bug fix: on X86 an immediate argument of the IMUL instruction is
2934 correctly printed in disassembly. (thanks to Lutz Euler)
2935 * bug fix: class slots in redefined classes preserve their old
2936 values. (thanks to Bruno Haible and Nikodemus Siivola)
2937 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2938 succeeds. (reported by Marco Baringer)
2939 * fixed some bugs revealed by Paul Dietz' test suite:
2940 ** READ-SEQUENCE now works on ECHO-STREAMs.
2941 ** RATIONALIZE works more according to its specification. (thanks
2944 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2945 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2946 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2947 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2948 should matter to you only if you rebind the printer control
2949 variables and then find you want different bindings in the
2950 debugger than in the ordinary execution of your program.)
2951 * The runtime build system has been tweaked to support building
2952 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2953 assembler and linker. (thanks to Nikodemus Siivola)
2954 * Unbound, undefined, undeclared variables now trigger full
2955 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2956 more often programmer error than deliberate exploitation of undefined
2958 * optimization: the hash algorithm for strings has changed to one
2959 that is less vulnerable to spurious collisions. (thanks to Juho
2961 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2962 needless bounds checking. (thanks to Juho Snellman)
2963 * optimization: implemented multiplication as a modular
2964 (UNSIGNED-BYTE 32) operation on the PPC backend.
2965 * fixed some bugs revealed by Paul Dietz' test suite:
2966 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2968 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2969 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2970 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2972 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2974 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2976 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2977 their output stream on EOF from read.
2978 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2979 have been read to end-of-file.
2980 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2982 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2983 description of determination of which consecutive characters
2985 ** Printing the "Space" character with escaping on now yields "#\\ ",
2986 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2987 ** Reading floating-point numbers with *READ-BASE* set to a number
2988 less than 10 works correctly.
2989 ** Reading floating-point numbers with *READ-BASE* set to a number
2990 more than 10 works correctly.
2991 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2992 the readtable currently in effect.
2994 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2995 * minor incompatible change: parsing of namestrings on a physical
2996 (Unix) host has changed; numbers after the final #\. in a
2997 namestring are no longer interpreted as a version field. This is
2998 intented to be largely invisible to the user, except that the
2999 meaning of the namestring "*.*.*" has changed: it now refers to a
3000 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3001 should usually be replaced by
3002 (make-pathname :name :wild :type :wild :version :wild)
3003 with the added benefit that this is more likely to be portable.
3004 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3005 option to OPEN now signals an error if the file being opened
3006 exists; this may have an impact on existing code.
3007 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3008 signals received, on the PowerPC platforms (both Linux and
3009 Darwin). (thanks to Pierre Mai for pointing out the location of
3011 * several fixes on OS X: The system now builds and runs cleanly on
3012 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3013 (thanks to Brian Mastenbrook)
3014 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3015 second-resolution: integer multiples of 1/3600 between -24 and 24.
3016 (thanks to Vincent Arkesteijn)
3017 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3018 type when called with 1 argument; PEEK-CHAR checked type of
3019 PEEK-TYPE only after having read first character from a
3020 stream. (reported by Peter Graves)
3021 * bug fix: the garbage collector now has much better locality
3022 behaviour, and in particular no longer treats all memory as being
3023 exhausted when many small objects point to each other in a deeply
3025 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3026 recognized as being TYPEP their class.
3027 * bug fix: the PUSHNEW documentation string has been corrected.
3028 (thanks to Vincent Arkesteijn)
3029 * bug fix: defaulting of the value for the last of an atypically
3030 large number of multiple values being bound was not being
3031 performed correctly on the Alpha or PPC platforms
3032 * optimization: implemented multiplication as a modular
3033 (UNSIGNED-BYTE 32) operation on the x86 backend.
3034 * optimization: SEARCH on simple-base-strings can now be open-coded.
3035 (see also contrib/compiler-extras.lisp for inspiration for
3036 teaching the compiler about the Boyer-Moore algorithm).
3037 * value, returned by MAX (and MIN) called with several EQUALP, but
3038 not EQL, arguments now does not depend on compiler settings.
3039 * fixed some bugs revealed by Paul Dietz' test suite:
3040 ** in stack analysis liveness information is propagated from
3041 non-local entry points.
3042 ** pathwise CAST removing failed when the CAST node did not start
3044 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3045 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3047 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3048 host is already defined.
3049 ** RENAME-FILE works on streams instead of signalling an internal
3051 ** PEEK-CHAR uses the current readtable when determining whether
3052 or not a character is whitespace.
3053 ** MERGE-PATHNAMES handles the case when the pathname does not
3054 specify a name while the default-pathname specifies a version.
3055 ** Pathnames now stand a better chance of respecting print/read
3057 ** Attempting to use standardized file system operators with a
3058 pathname with invalid :DIRECTORY components signals a
3060 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3062 ** DIRECTORY on logical pathnames is more correct.
3063 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3064 signal a TYPE-ERROR if their argument is not a stream.
3065 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3066 designator argument does not designate a stream.
3067 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3068 examining the synonym.
3069 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3071 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3072 element-type larger than ([UN]SIGNED-BYTE 32).
3074 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3075 * When built with the :SB-FUTEX feature, threaded builds now take
3076 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3077 for faster/more reliable mutex and condition variable support.
3078 * Incompatible change (but one you probably shouldn't have been using
3079 anyway): the interface and code for arbitrating between multiple
3080 threads in the same user session has been redesigned.
3081 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3082 error when called without an explicit environment argument.
3083 (thanks to Nikodemus Siivola)
3084 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3085 confused about their position. (thanks to Adam Warner and Gerd
3087 * bug fix: Pretty printing backquoted forms with unquotations in the
3088 argument list position of various code constructs such as LAMBDA
3089 now works correctly. (reported by Paul Dietz)
3090 * bug fix: Pretty printing unquotations no longer loses all
3091 stream position information.
3092 * optimization: performance of string output streams is now less
3093 poor for multiple small sequence writes.
3094 * optimization: performance of CSUBTYPEP in the presence of complex
3095 expressions involving CONS and NOT many times has been improved.
3096 (reported by Paul Dietz)
3097 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3099 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3100 streams for the REPL, for the debugger, and so on. (thanks to
3102 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3103 * fixed some bugs revealed by Paul Dietz' test suite:
3104 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3105 is ignored if it is too small, rather than propagating through
3106 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3107 ** extremely complex negations of CONS types were not being
3108 sufficiently canonicalized, leading to inconsistencies in
3110 ** VALUES tranformer lost derived type.
3112 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3113 * fixed a bootstrapping bug: the build process no longer assumes
3114 that the various BOOLE-related constants have the same value in
3115 host and target lisps. (noted by Paul Dietz' test suite on an
3116 SBCL binary built from CLISP)
3117 * The system can now be dynamically linked on the MIPS platform,
3118 which enables dynamic loading of foreign code from Lisp. (thanks
3119 to Ralf Baechle for discussions on the MIPS ABI)
3120 * The system now records debugging information for its own source
3121 files in a filesystem-position-independent manner, relative to
3122 the "SYS" logical host.
3123 * fixed a compiler bug: MV-LET convertion did not check references
3124 to the "max args" entry point. (reported by Brian Downing)
3125 * tweaked disassembly notes to be less confident about proclaiming
3126 some instruction as an LRA. (thanks to Brian Downing)
3127 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3128 now each have their own history, command character, and other
3129 characteristics. (thanks to David Lichteblau)
3130 * fixed some bugs revealed by Paul Dietz' test suite:
3131 ** compiler failure in compiling LOGAND expressions including a
3133 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3134 shift greater than 32.
3135 ** FLUSH-DEST did not mark blocks for type check regeneration.
3136 ** HANDLER-CASE failed to accept declarations in handler clauses
3137 in some circumstances.
3139 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3140 * New code in contrib/sb-introspect (still probably not entirely
3141 stable yet) provides some support for smart Lisp development
3142 environments like SLIME.
3143 * The conditions signalled for errors occurring when loading .fasl
3144 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3145 in a way which should help ASDF recover gracefully.
3146 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3147 stuff has been cleaned up. If you code contrib/ stuff, this might
3148 affect you, and you can look at contrib/README, contrib/STANDARDS,
3149 and/or the 0.8.4.27 diff to check.
3150 * In full calls the compiler now does not generate checks for declared
3151 argument types for all arguments.
3152 * various threading fixes
3153 ** and some experimental patches which didn't make it into
3154 the main tree for this release, but which are shipped in
3155 contrib/experimental-thread.patch as a possible fix for some
3156 failures (deadlock, spinning...) in GC-intensive multithreaded
3158 * fixed PPC build problem (source code incompatibility of different
3159 library versions): added offsetof() hackery which attempts to divine
3160 where glibc maintainers put uc_mcontext today
3161 * fixed bug 282: compiler does not trust type assertions while passing
3162 arguments to a full call.
3163 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3164 &OPTIONAL VALUES type parameter.
3165 * fix bug 214: algorithm for noting rejected templates is now more
3166 similar to that of template seletion. (also reported by rydis on
3168 * fixed bug 141b: printing backquoted information readably and prettily
3169 inserts a space where necessary.
3170 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3171 (CHARACTER 10) are now reported as errors, rather than propagated
3172 as unknown types. (reported by piso on #lisp)
3173 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3174 with values NIL and :ERROR. (thanks to Milan Zamazal)
3175 * fixed bug 191c: CLOS now does proper keyword argument checking as
3176 described in CLHS 7.6.5 and 7.6.5.1.
3177 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3178 longer raise an error; further, using a list as a for-as-arithmetic
3179 counter now raises a meaningful error.
3180 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3181 now understood by sequence creation functions such as MAKE-SEQUENCE
3183 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3184 a STRING-INPUT-STREAM.
3185 * compiler enhancement: SIGNUM is now better able to derive the type
3187 * type declarations inside WITH-SLOTS are checked. (reported by
3189 * fixed some bugs revealed by Paul Dietz' test suite:
3190 ** incorrect optimization of TRUNCATE for a positive first
3191 argument and negative second.
3192 ** compiler failure in let-convertion during flushing dead code.
3193 ** compiler failure while deriving type of TRUNCATE on an
3194 interval, containing 0.
3195 ** ASH of a negative bignum by a negative bignum count now returns
3197 ** intersection of CONS types now canonicalizes properly, fixing
3198 inconsistencies in SUBTYPEP.
3200 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3201 * incompatible change: The --disable-debugger command line
3202 option now clobbers the debugger at a more fundamental
3203 level, by redefining #'INVOKE-DEBUGGER instead of by
3204 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3205 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3206 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3207 enter the debugger REPL and then suffer recursive errors
3208 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3209 while under the new system, BREAK in --disable-debugger mode
3210 terminates the system just as an unhandled error would.
3211 * fixed compiler performance when processing loops with a step >1;
3212 * bug fix: DOCUMENTATION now retrieves generic function
3213 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3214 support has been systematized, and now supports the methods
3215 specified by ANSI, along with a default method and a method for
3216 slot documentation. (reported by Nathan Froyd)
3217 * bug fix: effective methods associated with a generic function are
3218 no longer cached over a change of that generic function's method
3219 combination. (reported by Andreas Fuchs)
3220 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3221 names a non-existent directory. (thanks to Andreas Fuchs)
3222 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3223 the PPC platform, lead to stack corruption; this has been fixed.
3224 (reported by Rainer Joswig)
3225 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3226 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3227 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3228 arithmetic in general, is now much more reliable on the PPC
3230 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3231 platform now returns the right answer.
3232 * optimization: restored some effective method precomputation in
3233 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3234 precomputation is now tunable.
3235 * optimization: compiler-internal data structure use has been
3236 reviewed, and changes have been made that should improve the
3237 performance of the compiler by about 20%.
3238 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3239 simple-base-strings and simple-bit-vectors is improved.
3240 * optimization: the optimization of 32-bit logical and arithmetic
3241 functions introduced in version 0.8.3 on the x86 has been
3242 implemented on the mips, ppc and sparc platforms; an
3243 implementation of the same facility, but for 64-bit arithmetic,
3244 has been added for the alpha.
3245 * microoptimization: the compiler is better able to make use of the
3246 x86 LEA instruction for multiplication by constants.
3247 * bug fix: in some situations compiler did not report usage of
3248 generic arithmetic in (SPEED 3) policy.
3249 * bug 145b fix: compiler used wrong type specifier while converting
3250 MEMBER-types to numeric.
3251 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3253 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3254 index argument now works properly on the Alpha platform.
3255 * bug fix: floating point exception treatment on the Alpha platform
3257 * bug fix: FILE-POSITION works much better on string input and
3258 output streams. (thanks to Nikodemus Siivola)
3259 * bug fix: many threading/garbage collection symptoms sorted.
3260 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3261 might be pseudo-atomic.
3262 * internal change: Stopping for GC is now done with signals not
3263 ptrace. GC is now done in whichever thread wanted it, instead of
3265 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3267 * bug fix: result form in DO is not contained in the implicit
3269 * incompatible change: ICR structure is changed; the value part of
3270 CONTINUATION is now called LVAR; corresponding functions are
3271 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3272 * added type deriver for ISQRT (thanks to Robert E. Brown).
3273 * bug fix: better support for loading from the command line when an
3274 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3276 * fixed some bugs revealed by Paul Dietz' test suite:
3277 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3278 ** ROUND and FROUND now give the right answer when given very
3279 small float arguments.
3280 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3282 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3283 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3284 ** LCM should return a non-negative integer.
3285 ** PARSE-INTEGER returned the index of a terminator instead of the
3286 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3287 ** PARSE-INTEGER returned an incorrect index being applied to a
3289 ** LCM with two arguments of 0 returns 0 rather than signalling
3291 ** unsigned addition of a 32-bit constant with the high bit set no
3292 longer causes an internal compiler error on the x86.
3293 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3294 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3295 with negative last argument.
3296 ** byte specifiers with zero size and position no longer cause
3297 an error during type derivation.
3298 ** bignum multiplication on the Alpha platform now returns the
3300 * porting: The system now builds on SuSE AMD64, although it still
3301 generates a 32-bit binary.
3302 * .fasl file incompatibility: The fasl file version number has
3303 been incremented (because of the changes to internal compiler
3304 data structures referred to above).
3306 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3307 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3308 more accurately, on the Darwin kernel running on PowerPC hardware.
3309 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3310 * Compiler code deletion notes now signal a condition of type
3311 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3312 an associated MUFFLE-WARNING restart.
3313 * The compiler now performs limited argument count validation of
3314 constant format strings in FORMAT, and where appropriate in ERROR,
3315 CERROR and WARN. (thanks to Gerd Moellmann)
3316 * New ASDF-INSTALL contrib can be used for automatic download and
3317 installation of third-party Lisp code from CCLAN or other sites
3319 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3320 which forces another thread to execute a function supplied by the
3322 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3323 now accept and act upon their :ELEMENT-TYPE keyword argument.
3324 (reported by Martin Atzmueller, Edi Weitz)
3325 * bug fix: FILE-POSITION now accepts position designators up to
3326 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3327 is the greater. (thanks to Patrik Nordebo)
3328 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3329 Kalle Olavi Niemitalo)
3330 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3331 printable. (reported by Eric Marsden)
3332 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3333 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3334 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3335 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3336 (thanks to Stig Sandoe)
3337 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3338 UNREAD-CHAR now correctly includes the unread character in the
3339 target sequence. (thanks to Gerd Moellmann)
3340 * bug fix in threaded builds: the system can now be suspended and
3341 resumed by shell job control with minimal disruption.
3342 * bug fixes in times and timezones >2038AD
3343 * better handling of "where is GNU make?" problem in build scripts
3344 (thanks to Nikodemus Siivola)
3345 * new optimization: inside a named function any reference to a
3346 function with the same name is considered to be a self-reference;
3347 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3348 optimization quality.
3349 * new optimization on x86: logical functions and + now have
3350 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3351 used when the result is truncated to 32 bits.
3352 * VALUES declaration is partially enabled.
3353 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3354 * fixed some bugs revealed by Paul Dietz' test suite:
3355 ** The system now obeys the constraint imposed by
3356 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3357 types form a lattice under type intersection.
3358 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3359 ** ASSOC now ignores NIL elements in an alist.
3360 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3361 and (1+ MOST-POSITIVE-FIXNUM) answers.
3362 ** The addition of a method with invalid qualifiers to a generic
3363 function does not cause an error to be signalled immediately;
3364 a warning is signalled, and the error is generated only on
3365 calling the generic function.
3366 * changed .fasl file version number, in part to add type codes for
3367 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3368 obscure ANSI requirements
3370 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3371 * fixed bug 148: failure to inline-expand a local function left
3372 garbage, confusing the compiler.
3373 * fixed bugs 3cd: structure slot readers perform type check if the
3374 slot can have an invalid value (i.e. it is either not initialized
3375 or can be written with a less specific slot writer).
3376 * bug fix: the compiler now traps array references to elements off
3377 the end of an array; previously, the bounds checking in some
3378 circumstances could go off-by-one.
3379 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3381 * type declarations for array element types now obey the description
3382 on the CLHS page "Declaration TYPE", as per discussions on
3383 sbcl-help around 2003-05-08. This means that a declaration
3384 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3385 declaration, all references to BAR will be asserted or assumed
3386 (with THE, so dependent on compiler policy) to involve objects of
3387 type FOO. Note that no such declaration is implied in
3388 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3389 * declared types of functions from the "Conditions"
3390 chapter. (reported by Paul Dietz)
3391 * bug fix: CERROR accepts a function as its first argument.
3392 * bug fix: NTH an NTHCDR accept a bignum as index
3393 arguments. (reported by Adam Warner)
3394 * optimization: character compare routines now optimize comparing
3395 against a constant character. (reported by Gilbert Baumann)
3396 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3397 argument now works properly on the MIPS platform.
3398 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3399 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3400 declared to have a functional type, does not cause an error
3402 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3403 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3404 * fixed bug: if last continuation of a deleted block has a
3405 destination, this destination should be deleted too. (reported by
3407 * fixed a bug in the bootstrap process: the host compiler's values
3408 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3409 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3410 test case from Patrik Nordebo)
3411 * improved the ability of the disassembler on the PPC platform to
3412 provide helpful disassembly notes.
3413 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3414 the class in more cases than previously.
3415 * bug fix: FILE-POSITION now understands :START and :END for
3416 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3417 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3418 8) data. (thanks to David Lichteblau)
3419 * bug fix: it is possible to add a method to a generic function
3420 without lambda list.
3421 * bug fix: reader failed to signal END-OF-FILE inside an
3422 object representation. (reported by Nikodemus Siivola)
3423 * fixed some bugs revealed by Paul Dietz' test suite:
3424 ** LAST and [N]BUTLAST should accept a bignum.
3425 ** condition slot accessors are methods.
3426 ** (VECTOR NIL) is a subtype of STRING.
3428 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3429 * minor incompatible change: some nonsensical specialized lambda
3430 lists (used in DEFMETHOD) which were previously ignored now signal
3432 * minor incompatible change: the system is now aware of the types of
3433 variables in the COMMON-LISP package, and will signal errors for
3434 most violations of these type constraints (where previously they
3435 were silently accepted).
3436 * minor incompatible change: COMPILE-FILE now uses the freedom
3437 afforded (ANSI 3.2.2.3) to use derived function types for
3438 functions defined in the same file. This also permits the system
3439 to warn on static type mismatches and function
3440 redefinition. (Currently it does not work with high DEBUG level.)
3441 * minor incompatible change: VALUES declaration is disabled.
3442 * When issuing notes, the compiler now signals a condition of type
3443 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3444 restart for use in user handlers. It is expected that the
3445 COMPILER-NOTE condition will eventually become a condition
3446 supertype to a hierarchy of note types, which will then be
3447 handleable in a similar fashion. However, at the moment, no such
3448 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3449 but it's an implementation detail, not a classification for the
3451 * Changes in type checking closed the following bugs:
3452 ** type checking of unused values (192b, 194d, 203);
3453 ** template selection based on unsafe type assertions (192c, 236);
3454 ** type checking in branches (194bc).
3455 * A short form of VALUES type specifier has ANSI meaning (it has
3456 increased the number of situations when SBCL cannot perform type
3458 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3459 keywords or constants is permissible.
3460 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3461 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3462 classes. (thanks to Antonio Martinez)
3463 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3464 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3465 argument to a pretty-print stream. Instead, it leaves any such
3466 operations to DESCRIBE-OBJECT methods.
3467 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3469 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3470 lambda lists. (thanks to David Lichteblau)
3471 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3472 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3473 (thanks to Gerd Moellmann)
3474 * fixed bug 246: increased compilation speed of long
3475 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3477 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3479 * DEFCONSTANT now throws a condition of type
3480 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3481 constant to a non-EQL value; CONTINUE and ABORT restarts
3482 respectively change and preserve the value.
3483 * fixed bug 63: The code walker, part of the implementation of CLOS,
3484 is now better at handling symbol macros.
3485 * bug fix: There is no longer an internal implementation type named
3486 CL:LENGTH. (reported by Raymond Toy)
3487 * bug fix: In macro-like defining macros/special operators the
3488 implicit block does not enclose the lambda list.
3489 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3490 enclosed in parentheses) are not suitable as type specifiers, and
3491 their use properly signals an error now.
3492 * bug fix: An argument count mismatch for a type specifier in code
3493 being compiled no longer causes an unhandled error at compile
3494 time, but signals a compile-time warning.
3495 * fixed simple vector readable printing
3496 * bug fix: DESCRIBE takes more care over whether the class
3497 precedence list slot of a class is bound before accessing it.
3498 (reported by Markus Krummenacker)
3499 * bug fix: FORMATTER can successfully compile pretty-printer format
3500 strings which use variants of the ~* directive inside.
3501 * bug fix: SEARCH now applies its TEST predicate to the elements of
3502 the arguments in the correct order. (thanks to Wolfhard Buss)
3503 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3504 in type inference. (thanks to Robert E. Brown)
3505 * bug fix: Reading in symbols with an explicit package name of ""
3506 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3507 * fixed some bugs revealed by Paul Dietz' test suite:
3508 ** NIL is now allowed as a structure slot name.
3509 ** Arbitrary numbers, not just REALs, are allowed in certain
3510 circumstances in LOOP for-as-arithmetic clauses.
3511 ** Multiple class redefinitions before slot access no longer
3512 causes a type error.
3513 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3514 association between the name and a class.
3515 ** Generic functions with non-standard method-combination and over
3516 five methods all of which return constants no longer return NIL
3517 after the first few invocations. (thanks to Gerd Moellmann)
3518 ** CALL-NEXT-METHOD with no arguments now passes the original
3519 values of the arguments, even in the presence of assignment.
3520 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3522 ** DISASSEMBLE works with closures and funcallable instances.
3523 ** ADD-METHOD now returns the generic function, not the new method.
3524 ** FIND-METHOD signals an error if the lengths of the specializers
3525 is incompatible with the generic function, even if the ERRORP
3527 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3528 which its argument is a member.
3529 ** DEFCLASS only redefines the class named by its class-name
3530 argument if that name is the proper name of the class;
3531 otherwise, it creates a new class.
3532 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3533 of the UNBOUND-SLOT condition to the name of the slot.
3534 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3535 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3536 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3537 SLOT-MAKUNBOUND in the specified fashion.
3539 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3540 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3541 cross-compilation host. As a consequence, we can now bootstrap our
3542 way up to SBCL starting with a bare gcc toolchain and human-readable
3543 source code (first the source to CLISP, then the source to SBCL).
3544 * A contributed module containing a partial implementation of the
3545 simple-streams interface has been included. (thanks to Rudi
3547 * A contributed module implementing the RFC1321 Message Digest
3548 Algorithm, known as MD5, has been included.
3549 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3550 no longer has any effect, as the code controlled by this feature
3551 has been deleted. (As far as we know, no-one has ever built using
3552 this feature, and its semantics were confused in any case).
3553 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3554 work on conditions (as required by the ANSI specification),
3555 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3556 expected behaviour on conditions. Users should note, however,
3557 that such behaviour is not required by the ANSI specification,
3558 and so use of this behaviour may render their code unportable.
3559 * fixed some bugs revealed by Paul Dietz' test suite:
3560 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3562 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3563 ** SXHASH on condition objects no longer returns NIL.
3564 ** :ALLOCATION :CLASS slots are better treated; their values are
3565 updated on class redefinition, and initforms inherited from
3566 superclasses are applied.
3567 ** REMOVE-METHOD returns its generic function argument even when
3568 no method was removed.
3569 ** SHARED-INITIALIZE now initializes the values of the requested
3570 slots, including those with :ALLOCATION :CLASS.
3571 ** ALLOCATE-INSTANCE now works on structure classes defined via
3572 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3574 ** SLOT-EXISTS-P now works on conditions, as well as structures
3576 ** MAKE-LOAD-FORM now has the required methods on
3577 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3578 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3579 keyword, and now implements the SLOT-NAMES argument.
3580 ** methods with &OPTIONAL arguments no longer allow too many
3581 arguments to be passed in the call without error.
3582 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3583 option is consistent with the required arguments of the generic
3584 function lambda list.
3585 * bug fix: REQUIRE accepts a string designator. (Thanks to
3587 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3588 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3589 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3590 * bug fix: The compiler now checks for duplicated variables in macro
3592 * bug fix: SETQ on globals returns the correct value.
3593 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3594 not a COMPILER-ERROR (followed by some other strange error on
3595 choosing the CONTINUE restart).
3596 * bug fix: make.sh and friends are now more consistent in the way that
3597 they look for GNU "make".
3599 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3600 * experimental native threads support (on x86 Linux >=2.4 only).
3601 This is not compiled in by default: you need to add :SB-THREAD to
3602 the target features. See the "Beyond ANSI" chapter of the manual
3604 * fix for longstanding nonANSIism: The old distinction between
3605 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3606 The return value from CL:FIND-CLASS is now a CLOS class, and
3607 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3608 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3609 * An interface to the MetaObject Protocol, as described in Kiczales,
3610 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3611 MIT Press, 1991, is available from the SB-MOP package.
3612 * incompatible change: the SB-PCL package should now be considered
3613 a private implementation detail, and no longer a semi-private MOP
3615 * minor incompatible change: due to rearrangement for threads, the
3616 control stack and binding stack are now allocated at arbitrary
3617 addresses instead of being hardcoded per-port. Users affected by
3618 this probably have to be doing advanced things with shared
3619 libraries, and will know who they are.
3620 * minor incompatible change: Previously, all --eval forms used were
3621 processed with READ before any of them were processed with EVAL.
3622 Now each --eval form is processed with both READ and EVAL before
3623 the next --eval form is processed. (Thus package operations like
3624 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3625 work as the user might reasonably expect.)
3626 * minor incompatible change: *STANDARD-INPUT* is now only an
3627 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3629 * minor incompatible change: Y-OR-N-P is now character-oriented,
3630 not line oriented. Also, YES-OR-NO-P now works without errors.
3631 (thanks to Antonio Martinez)
3632 * sb-aclrepl module improvements: an integrated inspector, added
3633 repl features, and a bug fix to :trace command.
3634 * Known functions, which cannot be open coded by the backend, are
3635 considered to be able to check types of their arguments. (fixing
3636 a bug report by Nathan J. Froyd)
3637 * fixed a bug in computing method discriminating functions: It is
3638 now possible to define methods specialized on classes which have
3639 forward-referenced superclasses. (thanks to Gerd Moellmann)
3640 * fixed evaluation order in optional entries (reported by Gilbert
3642 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3643 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3644 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3645 required-by-AMOP NAME argument, as well as CLASS and
3646 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3647 * fixed bug 20: DEFMETHOD can define methods using names that are
3648 not the proper names of classes to designate class specializers.
3649 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3650 Unix file descriptors, instead of blowing up. (thanks to Antonio
3652 * Garbage collection refactoring: user-visible change is that a
3653 call to the GC function during WITHOUT-GCING will not do garbage
3654 collection until the end of the WITHOUT-GCING. If you were doing
3655 this you were probably losing anyway.
3656 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3657 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3658 TYPEP the latter but not the former.
3659 * The compiler issues a full WARNING for calls to undefined functions
3660 with names from the CL package.
3661 * MAP-INTO for a vector destination is open coded. (reported by
3662 Brian Downing on c.l.l)
3663 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3664 documentation string.
3665 * fixed some bugs revealed by Paul Dietz' test suite:
3666 ** COPY-ALIST now signals an error if its argument is a dotted
3668 ** Condition slots are now accessed more correctly in the presence
3669 of multiple initargs for a given slot.
3670 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3671 exclude restarts of the same name associated with a different
3673 ** DEFCLASS of forward-referenced classes with another
3674 forward-referenced class in the superclasses list no longer
3676 ** Condition slots are now initialized once each, not multiple
3677 times. (thanks to Gerd Moellmann)
3678 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3680 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3681 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3682 arguments contain duplicated elements.
3683 ** RESTART-CASE understands local macros.
3684 ** RESTART-CASE associates exactly its own restarts with a condition.
3685 ** ENDP in safe mode checks its argument to be of type LIST.
3686 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3687 in question is unbound.
3688 ** Optimized MAKE-INSTANCE functions no longer cause internal
3689 assertion failures in the presence of duplicate initargs.
3690 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3691 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3692 propagated even in the ctor optimized implementation of
3694 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3696 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3697 * a better implementation of SXHASH on (simple) bit vectors,
3698 measured both in execution speed and in distribution of results
3699 over the positive fixnums, has been installed. Likewise, a better
3700 implementation of EQUAL for simple bit vectors is now available.
3701 * fixed CEILING optimization for a divisor of form 2^k.
3702 * fixed bug 240 (emitting extra style warnings "using the lexical
3703 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3704 by Antonio Martinez)
3705 * fixed SXHASH, giving different results for NIL depending on type
3706 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3707 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3708 variable. (found by Rolf Wester)
3709 * SBCL does not ignore type declarations for special
3710 variables. (reported by rif on c.l.l 2003-03-05)
3711 * some bug fixes in contrib/sb-aclrepl/
3712 * fixed some bugs revealed by Paul Dietz' test suite:
3713 ** a bug in the CONS type specifier, whereby the CAR and CDR
3714 types got intertwined, has been fixed;
3715 ** the type system is now able to reason about the interaction
3716 between INTEGER and RATIO types more completely;
3717 ** APPEND, [N]REVERSE and NRECONC check that those their
3718 arguments, which must be proper lists, are really so;
3719 ** An array specialized to be unable to hold elements has been
3720 implemented, as required -- yes, really -- by ANSI;
3721 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3722 on malformed property lists;
3724 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3725 * incompatible packaging change: in line with Unix convention,
3726 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3727 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3728 * REQUIRE and PROVIDE are now optionally capable of doing something
3729 useful. See the documentation string for REQUIRE.
3730 * infrastructure for a managed SBCL contrib system: contributed
3731 modules in this release include:
3732 ** the ASDF system definition facility;
3733 ** an interface to the BSD Sockets API;
3734 ** an ACL-like convenience interface to the repl;
3735 (thanks to Kevin Rosenberg)
3736 ** an implementation of ROTATE-BYTE, with efficient implementation
3738 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3739 gives a closer approximation to the right answer than previously.
3740 (thanks to Raymond Toy)
3741 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3742 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3743 optional environment arguments, as required by ANSI.
3744 * fixed bugs in other functions taking environment objects, allowing
3745 calls with an explicit NIL environment argument to be compiled
3747 * fixed bug 228: primary return values from
3748 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3749 COMPILE or FUNCTION.
3750 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3751 :TYPE will no longer signal errors on innocuous objects.
3752 * fixed bug 231b: SETQ is better at respecting type declarations in
3753 the lexical environment.
3754 * fixed a bug in DEFCLASS: classes named by symbols with no or
3755 unprintable packages can now be defined.
3756 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3757 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3758 * fixed compiler failure related to checking types of functions.
3759 (reported by Robert E. Brown)
3760 * the compiler is now much more consistent in its error-checking
3761 treatment of bounding index arguments to sequence functions: in
3762 (SAFETY 3) code, errors will be signalled in almost all cases if
3763 invalid sequence bounding indices are passed to functions defined
3764 by ANSI to operate on sequences.
3765 * fixed a bug in the build procedure: documentation of SBCL-specific
3766 packages is now preserved and available in the final Lisp image.
3767 * lifted FDEFINITION lookup out of loops in the implementation of
3768 many list operations. (thanks to Robert E. Brown)
3769 * fixed a bug in the reader: the #n# reader macro now works for
3770 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3771 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3772 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3773 E. Brown and Tony Martinez respectively)
3774 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3775 SLOT-BOUNDP: in particular, it is now able to optimize them much
3776 better, and is now not vulnerable to having packages renamed.
3777 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3778 always called when a slot is not present in an instance. (thanks
3780 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3781 longer signal an error on unreading a character following EOF on
3782 the previous constituent stream. (thanks to Tony Martinez)
3783 * fixed some bugs revealed by Paul Dietz' test suite:
3784 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3785 not just nonnegative fixnums;
3786 ** the logical bit-array operators such as BIT-AND now accept an
3787 explicit NIL for their "opt-arg" argument (to indicate a
3788 freshly-consed result bit-array);
3789 ** ELT now signals an error on an invalid sequence index in safe
3791 ** the type system is now cleverer about negations of numeric
3792 types, and consequently understands the BIGNUM and RATIO types
3794 ** the type system is now cleverer about the interaction between
3795 INTEGER and RATIO types: while bugs still remain, many more
3796 cases are accurately computed;
3797 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3798 if it is in the last clause;
3799 ** CONSTANTLY now correctly returns a side-effect-free function in
3801 ** DECLARE is no longer treated as a special-operator; in
3802 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3803 * incremented fasl file version number due to the change in the
3804 DEFSTRUCT-SLOT-DESCRIPTION structure.
3806 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3807 * minor incompatible change: code processed by the "interpreter" or
3808 EVAL now has a compilation optimization policy of (DEBUG 2)
3809 (changed from (DEBUG 1)) to improve debuggability of interactive
3810 development, and to allow the use of the debug RETURN command in
3812 * an experimental implementation of the RETURN command for the
3813 debugger has been included. (thanks to Frederik Kuivinen)
3814 * fixed bug 62: constraints were not propagated into a loop.
3815 * fixed bug in embedded calls of SORT (reported and investigated by
3817 * fixed some bugs revealed by Paul Dietz' test suite:
3818 ** printing and reading of arrays with some dimensions having
3819 length 0 (thanks to Gerd Moellmann);
3820 ** BOA constructor with &AUX argument without a default value does
3821 not cause a type error;
3822 ** CONSTANTP now returns true for all self-evaluating objects.
3824 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3825 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3826 accessors that are related by inheritance, as specified in the
3827 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3828 Valtteri Vuorikoski)
3829 * The compiler is now able to inline functions that were defined in
3830 a complex lexical environment (e.g. inside a MACROLET).
3831 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3833 * Support for the upcoming FreeBSD-5.0 release has been included.
3834 (thanks to Dag-Erling Smorgrav)
3835 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3836 effect when it is not in a toplevel context.
3837 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3838 stand a better chance of being correct. (thanks to Gerd
3840 * fixed bug in COERCE, which now signals an error on coercing a
3841 rational to a bounded real type which excludes the expected
3843 * The compiler is now able to derive types more accurately from the
3844 COERCE and COMPILE functions.
3845 * fixed bug 223: functional binding is considered to be constant
3846 only for symbols in the CL package.
3847 * fixed bug 231: SETQ did not check the type of a variable being set
3848 (reported by Robert E. Brown)
3849 * A new optimization for MAKE-INSTANCE has been included, fixing
3850 various bugs (including relating to :ALLOCATION :CLASS slots and
3851 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3853 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3854 ** As required by ANSI, LOOP now disallows anonymous collection
3855 clauses such as COLLECT I in conjunction with aggregate boolean
3856 clauses such as THEREIS (= I 1);
3857 ** LOOP now signals an error when any variable is reused in the
3858 same loop (including the potentially useful construct analogous
3859 to WITH A = 1 WITH A = (1+ A);
3860 ** IT is only a special loop symbol within the first clause of a
3861 conditional loop clause;
3862 ** LOOP with a typed iteration variable over a hashtable now
3863 signals a type error iff it should.
3864 * fixed some other bugs revealed by Paul Dietz' test suite:
3865 ** FILE-STREAM now names the class previously known as FD-STREAM;
3866 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3867 argument) no longer signals an error;
3868 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3869 of the slot symbol, rather than using the current package
3870 ((:CONC-NAME "") continues to intern the slot's name in the
3872 * incremented fasl file version number, because of the incompatible
3873 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3874 of the new implementation of DEFINE-COMPILER-MACRO.
3876 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3877 * Support for building SBCL for MIPS platforms running in
3878 little-endian mode has now been checked in, and basic
3879 functionality on said platforms verified.
3880 * minor incompatible change: PCL now records the pathname of a file
3881 in which methods and the like are defined, rather than its
3883 * minor incompatible change: TRUENAME now considers the truename of
3884 a file naming a directory to be the pathname with :DIRECTORY
3885 component indicating that directory.
3886 * minor incompatible change: a NAMED clause in the extended form of
3887 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3888 reason for the previous behaviour is unclear.
3889 * more systematization and improvement of CLOS and MOP conformance
3890 in PCL (thanks to Gerd Moellman and Pierre Mai):
3891 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3893 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3894 primary methods with no specializers;
3895 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3897 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3898 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3899 FORWARD-REFERENCED-CLASSes; error reporting on
3900 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3902 ** SXHASH on CLOS instances now uses a slot internal to the
3903 instance to return different numbers on distinct instances,
3904 while preserving the same return value through invocations of
3906 ** DEFMETHOD signals errors when methods with longer incongruent
3907 lambda lists are added to generic functions;
3908 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3909 CLASS, as specified in AMOP;
3910 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3911 on the order returned by the primary method for classes of
3912 class STANDARD-CLASS;
3913 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3914 * fixed some bugs shown by Paul Dietz' test suite:
3915 ** DOLIST puts its body in TAGBODY;
3916 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3918 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3919 value producing form;
3920 ** if more variables are given to PROGV than values, extra
3921 variables are bound and made to have no value;
3922 ** NSUBSTITUTE on list arguments gets the right answer with
3924 ** ELT signals an error of type TYPE-ERROR when the index argument
3925 is not a valid sequence index;
3926 ** LOOP signals (at macroexpansion time) an error of type
3927 PROGRAM-ERROR when duplicate variable names are found;
3928 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3929 ** FUNCALL of special-operators now cause an error of type
3931 ** PSETQ now works as required in the presence of side-effecting
3932 symbol-macro places;
3933 ** NCONC accepts any object as its last argument;
3934 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3936 ** loop-for-as-package does not require a package to be explicitely
3938 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3940 * fixed bug 166: compiler preserves "there is a way to go"
3941 invariant when deleting code.
3942 * fixed bug 172: macro lambda lists with required arguments after
3943 &REST arguments now cause an error to be signalled. (thanks to
3945 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3946 bug. (thanks to Matthew Danish)
3947 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3949 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3950 arguments are lexically rebound. (thanks to Gerd Moellmann and
3952 * fixed bug 194: error messages are now more informative when there
3953 is no primary method applicable in a call to a generic
3954 function. (thanks to Gerd Moellmann)
3955 * fixed bug in command line argument checking (thanks to Julian
3957 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3958 (thanks to Matthew Danish)
3959 * incremented fasl file version number, because of the
3960 SXHASH-related changes in the layout of CLOS data structures
3962 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3963 * minor incompatible change: The runtime (the Unix executable named
3964 "sbcl") is now much pickier about the .core files it will load.
3965 Essentially it now requires .core files to descend from the same
3966 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3967 as the runtime does. (The intent is to prevent the crashes which
3968 can occur, and which can even be reported as mysterious failures,
3969 when people patch the sources or change the build parameters
3970 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3971 sbcl and .core files.)
3972 * fixed bug: VALUES-LIST is no longer optimized away.
3973 * fixed bug 142: The FFI conversion of C string values to Lisp
3974 string values no longer conses excessively. (thanks to Nathan
3975 Froyd porting Raymond Toy's fix to CMU CL)
3976 * began to systematize and improve MOP conformance in PCL (thanks to
3977 Nathan Froyd, Gerd Moellman and Pierre Mai):
3978 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3980 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3981 ** FINALIZE-INHERITANCE is now called on class finalization;
3982 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3983 argument precedence order.
3984 * fixed bug 202: The compiler no longer fails on functions whose
3985 derived types contradict their declared type.
3986 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3987 so it can be non-toplevel.
3988 * The fasl file version number has changed (because of the new
3989 implementation of DEFMACRO).
3990 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3991 safe code, that any length requirement by their type-specifier
3992 argument is valid. The exceptions to this are described in bug
3994 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3995 functions now check the types of their inputs as required by ANSI.
3996 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3997 introduced symbol is DECLAREd to be SPECIAL.
3998 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3999 * fixed bug: :COUNT argument to sequence functions may be negative
4000 * fixed bug: body of DO-SYMBOLS may contain declarations
4001 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4002 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4003 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4004 symbol macro only once
4005 * fixed printing of call frame when argument list is unavailable
4006 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4007 * compiler no longer signals WARNING on unknown keyword
4010 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4011 * A beta-quality port to the mips architecture running Linux,
4012 based on the old CMUCL backend, has been made. It has been tested
4013 on a big-endian kernel, and works sufficiently well to be able to
4014 rebuild itself; it has not been tested in little-endian mode.
4015 * fixed an inconsistency between gencgc.c and purify.c which made
4016 dumping/loading .core files unreliable
4017 * fixed bug 120a: The compiler now deals correctly with IFs where
4018 the consequent is the same as the alternative, instead of
4019 misderiving the return type. (thanks to Alexey Dejneka)
4020 * fixed bug 113: Logical pathnames are now dumpable (the logical
4021 host is resolved at load-time, throwing an error if it is not
4023 * fixed bug 174: FORMAT's error message is slightly clearer when a
4024 non-printing character is used in a format directive.
4025 * fixed several bugs in compiler checking of type declarations, i.e.
4026 violations of the Python "declarations are assertions" principle
4027 (thanks to Alexey Dejneka)
4028 * fixed several bugs in PCL's error checking (thanks to Gerd
4030 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4032 * fixed bug in compilation of functions as first class values
4033 (thanks to Antonio Martinez-Shotton)
4034 * The compiler's handling TYPE-ERRORs which it can prove will
4035 inevitably happen at runtime has been cleaned up and corrected
4036 in several ways. (thanks to Alexey Dejneka)
4037 * improved argument type checking for various basic arithmetic
4038 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4039 lavished on them in the past that they can be compiled in many
4040 ways in different special cases
4041 * fixed bug 181: compiler checks validity of user supplied type
4043 * cleaned up code flushing in optimization: Function calls which
4044 should signal errors for safety purposes (e.g. which ANSI says
4045 should signal errors when their arguments are of incorrect type)
4046 are no longer optimized away.
4047 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4048 * incremented fasl file version number, because changes in the
4049 implementation of sequence functions like COERCE caused
4050 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4051 in old inline expansions) to become undefined. (Actually these
4052 changes were later undone, so we might very well be binary
4053 compatible with 0.7.7 after all, but leaving the version number
4054 incremented seemed like the simplest and most conservative
4057 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4058 * An alpha-quality port to the parisc architecture running Linux,
4059 based on the old CMUCL backend, has been made. This, even more so
4060 than the other backends, should be considered still a work in
4061 progress; known problems include that the Linux kernel in 64-bit
4062 mode does not propagate the correct sigcontext structure to
4063 userspace, and consequently SBCL on a parisc64 kernel will not
4065 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4066 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4067 suppressed.) Also now that the compiler is looking at declarations
4068 in the environment, it checks optimization declarations as well,
4069 and suppresses inlining when (> DEBUG SPEED).
4070 * More fixes have been made to treatment of floating point exception
4071 treatment and other Unix signals. In particular, floating point
4072 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4073 * The detection and handling of control stack exhaustion (infinite
4074 or very deeply nested recursion) has changed. Stack exhaustion
4075 detection is now done by write-protecting pages at the OS level
4076 and applies at all optimization settings; when found, a
4077 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4078 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4079 be caught using IGNORE-ERRORS.
4080 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4081 correctly when transforming recursive LABELS functions to LETs.
4082 (thanks to Alexey Dejneka)
4083 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4084 that are names of constants or global variables.
4085 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4086 alien routines with docstrings.
4087 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4088 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4090 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4091 (thanks to Eric Marsden)
4092 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4093 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4094 * Bug fix: The SPARC backend can now compile functions involving
4095 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4096 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4097 to a functions expecting a PATHNAME-DESIGNATOR.
4098 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4099 lambda lists. (thanks to Alexey Dejneka)
4100 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4101 functions so that EXPORTing the name of the class doesn't cause
4102 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4103 to Antonio Martinez for reporting this)
4104 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4105 constant-folded without failing an assertion. (thanks to Einar
4106 Floystad Dorum for reporting this)
4107 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4108 types are now dealt with more correctly by the compiler.
4109 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4110 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4111 behaviour analogous to RENAME-FILE. This puts its behaviour more
4112 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4114 * The fasl file version number has changed again. (because of the
4115 bug fix involving the names of PCL MAKE-INSTANCE functions)
4117 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4118 * bug fix: Floating point exceptions are treated much more
4119 consistently on the x86/Linux and PPC/Linux platforms.
4120 * Array initialization with :INITIAL-ELEMENT is now much faster for
4121 cases when the compiler cannot open code the array creation, but
4122 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4123 array accesses have also seen a speed increase.
4124 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4125 specified. (This was at the root of some bad interactions between
4126 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4128 * bug fix: Internal error arguments for undefined functions are now
4129 computed correctly on the PPC/Linux platform.
4130 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4131 Raymond Toy's patch for CMU CL)
4132 * Support for the Solaris 9 operating environment has been included
4133 (thanks to Daniel Merritt)
4134 * A very ugly but hopefully complete draft of the missing FFI chapter
4135 of the manual has been created by reformatting the corresponding
4136 CMU CL manual chapter into (currently very ugly and incoherent)
4137 DocBook and bringing it up to date for SBCL behavior. Thus, the
4138 manual is now essentially complete, at least by my extreme
4139 once-and-only-once standards, whereby it's acceptable to refer to
4140 the doc strings of SB-EXT functions as the primary documentation.
4141 * The fasl file version number has changed again, due to cleanup of
4142 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4143 is no longer a static symbol.)
4145 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4146 * SBCL now builds with OpenMCL (version 0.12) as the
4147 cross-compilation host; also, more progress has been made toward
4148 bootstrapping under CLISP.
4149 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4151 * bug 158 fixed: The compiler can now deal with integer loop
4152 increments different from 1; fixing this turned out also to fix
4154 * bug 169 fixed: no more bogus warnings about using lexical bindings
4155 despite the presence of perfectly good SPECIAL declarations (thanks
4156 to David Lichteblau)
4157 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4158 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4159 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4161 * bug 180 fixed: Method combination specifications no longer ignore
4162 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4163 * bug fix: Structure type predicate functions now check their argument
4164 count as they should.
4165 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4166 correctly. (thanks to Pierre Mai)
4167 * minor incompatible change: The --noprogrammer option is deprecated
4168 in favor of the new --disable-debugger option, which is very similar.
4169 (The major difference is that it takes effect at a slightly different
4170 time at startup, causing handling of errors in --sysinit and
4171 --userinit files will be affected differently.) The
4172 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4173 been added to allow this functionality to be controlled from ordinary
4174 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4175 maintainers, who might want to run non-interactive scripts to
4176 build SBCL cores which will later be used interactively.)
4177 * minor incompatible change: The LOAD function no longer, when given
4178 a wild pathname to load, loads all files matching that pathname.
4179 Instead, an error of type FILE-ERROR is signalled.
4181 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4182 * bug 147 fixed: The compiler preserves its block link/count
4183 invariants more correctly now so that it doesn't crash. (thanks
4185 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4187 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4188 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4189 no-value-for-this-character as NIL (as specified by ANSI).
4190 * HOST-NAMESTRING on physical pathnames now returns a string that is
4191 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4192 (thanks to Christophe Rhodes)
4193 * The Alpha port handles icache flushing more correctly. (thanks to
4195 * More progress has been made toward bootstrapping under CLISP. (thanks
4196 to Christophe Rhodes)
4197 * The fasl file format has changed again, because dynamic loading
4198 on OpenBSD (which has non-ELF object files) motivated some cleanups
4199 in the way that foreign symbols are transformed and passed around.
4200 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4201 is no longer treated as whitespace by the reader, but instead as
4202 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4203 |A
\7fB|, instead of A as it used to.
4205 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4206 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4207 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4208 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4209 this as of 0.7.1.45, but was left out of the previous news section
4210 (thanks to Dan Barlow)
4211 * SBCL now runs on the Solaris operating system on SPARC architectures
4212 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4213 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4214 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4215 * SPARC backend cleanups, allowing builds of cores optimized for V8
4216 and V9 SPARCS, and also emission of code targeted to a particular
4217 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4219 * SBCL is closer to bootstrapping under CLISP, thanks to various
4220 fixes by Christophe Rhodes.
4221 * The fasl file format has changed again, to allow the compiler's
4222 INFO database to support symbol macros.
4223 * The user manual (in doc/) is formatted into HTML more nicely.
4224 (thanks to coreythomas)
4225 * The system is smarter about SUBTYPEP relationships, especially
4226 those involving NOT types (including types such as ATOM which are
4227 represented internally using NOT types). Thus SUBTYPEP is less
4228 likely to return (VALUES NIL NIL) in general, and in particular
4229 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4231 * The fasl file format has changed again, because the internal
4232 representation of types now includes a new slot to support the new
4233 SUBTYPEP-of-NOT-types logic.
4234 * (not a change in the main branch of SBCL, but a related prototype
4235 which can hopefully be merged into the main branch of SBCL in the
4236 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4237 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4238 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4239 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4240 dispatch macro character combinations. (thanks to Alexey Dejneka)
4241 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4242 that superficially look like logical namestrings correctly.
4243 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4245 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4246 default supplied-p) for &optional and &key arguments. (thanks to
4249 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4250 * incompatible change: The compiler is now less aggressive about
4251 tail call optimization, doing it only when (> SPACE DEBUG) or
4252 (> SPEED DEBUG). (This is an incompatible change because there are
4253 programs which relied on the old CMU-CL-style behavior to optimize
4254 away their unbounded recursion which will now die of stack overflow.)
4255 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4256 for non-GENCGC systems has been increased to 20M (since that
4257 seems much closer to the likely performance optimum for modern
4258 systems than the old 4M value was)
4259 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4260 and *DEBUG-PRINT-LEVEL*
4261 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4262 of CMU CL's support for SPARC, and various endianness and other
4263 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4264 * new syntactic sugar for the Unix command line: --load foo.bar is now
4265 an alternate notation for --eval '(load "foo.bar")'.
4267 ** The system now detects stack overflow and handles it gracefully,
4268 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4269 optimization settings. (This is a good thing in general, and
4270 its introduction in this version should be particularly timely
4271 for anyone whose code fails because of suppression of tail
4273 ** The system now hunts for the C variable "environ" in a more
4274 devious way, to avoid segfaults when the C library version differs
4275 between compile time and run time. (thanks to Christophe Rhodes)
4276 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4277 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4278 ** The compiler no longer issues bogus style warnings for undefined
4279 classes in the same source file as the DEFCLASSes which defined
4280 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4282 ** fixes in CONDITION class precedence list for undefined function
4283 errors (thanks to Alexei Dejneka)
4284 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4285 correctly. (thanks to Dan Barlow)
4286 ** portability fixes aiming at bootstrapping under CLISP (thanks
4287 to Dave McDonald and Christophe Rhodes)
4288 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4289 ** fixes in type translation and and type inference (thanks to
4291 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4292 ** various fixes in the new ports (thanks to Dan Barlow)
4293 * several changes related to debugging:
4294 ** suppression of tail recursion, as noted above
4295 ** stack overflow detection, as noted above
4296 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4297 is now the default. (For some time encapsulation has been more
4298 reliable than the breakpoint-based :ENCAPSULATE NIL
4299 implementation, at least on X86 systems; and I just noticed that
4300 encapsulation also seems closer to the spirit of the ANSI
4303 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4305 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4306 up properly again. (There was a packaging bug in 0.7.0 which
4307 left their definitions in SB-SYS::LOAD-FOREIGN and
4308 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4309 vital for most things which interface to C-level interfaces,
4310 like extensions working with sockets or databases or
4311 Perl-compatible regexes or whatever, and the need to fix
4312 this bug is the main reason that 0.7.1 was released so
4314 ** DEFGENERIC is now choosier about the methods it redefines, so that
4315 reLOADing a previously-LOADed file containing DEFGENERICs does
4316 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4317 cycle now works as it should. (thanks to Alexey Dejneka)
4318 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4319 fixed by Christophe Rhodes. (He actually submitted this patch
4320 months ago, and I delayed until after 0.7.0.)
4321 ** Bug 111 (internal compiler confusion about runtime checks on
4322 FUNCTION types) was fixed by Alexey Dejneka.
4323 * Some internal cleanups (getting rid of variables which aren't
4324 needed now that the byte interpreter is gone) caused the fasl
4325 file format number to change again.
4327 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4328 * major incompatible change: The default fasl file extension, i.e. the
4329 default extension for files produced by COMPILE-FILE, has changed
4330 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4332 ** There are many changes in the implementation of the compiler.
4333 SBCL is now essentially a compiler-only implementation of ANSI
4334 Common Lisp. EVAL still "interprets" a few special cases, but
4335 almost all the interesting cases are handled by creating
4336 a LAMBDA expression, calling COMPILE on it, then calling
4337 FUNCALL on the result.
4338 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4339 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4340 Since the code is newer, there might still be some new bugs
4341 (though not as many as before Martin Atzmueller's fixes:-). But
4342 the new code is substantially simpler and clearer, and hopefully
4343 any remaining bugs will be simpler, less fundamental, and more
4344 fixable then the bugs in the old code.
4345 ** The revised compiler is still a little unsteady on its feet.
4347 *** The debugging information it produces (particularly the names
4348 of FUNCTION objects) is sometimes much less useful than what
4349 the old compiler produced.
4350 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4351 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4352 within a MACROLET) has been temporarily weakened.
4353 ** There are new compiler optimizations for various functions:
4354 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4355 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4356 *** the math functions TRUNCATE, FLOOR, and CEILING
4357 *** the function-of-all-trades COERCE
4358 Mostly these should be transparent, but there's one
4359 potentially-annoying problem (bug 117): when the compiler
4360 inline-expands a function and does type analysis on the result,
4361 it can create control paths which have type mismatches, and
4362 when it can't prove that those control paths aren't taken,
4363 it will issue WARNINGs about the type mismatches. This is
4364 a particular problem in practice for the new sequence functions.
4365 It's not clear how this should be fixed, and for now, a
4366 workaround is given in the entry for 117 in the BUGS file.
4367 ** (Because of the interaction between the two previous items --
4368 occasional inlining problems and new inline expansions -- some
4369 of the new sequence function optimizations won't really kick in
4370 completely until debugging information, and then inlining, are
4371 straightened out in some future version.)
4372 * minor incompatible changes:
4373 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4374 DIRECTORY no longer implicitly promotes NIL slots of its
4375 pathname argument to :WILD. In particular, when you ask for the
4376 contents of a directory (which you used to be able to do without
4377 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4378 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4379 ** changes in behavior that ANSI explicitly defines to be
4380 implementation dependent:
4381 *** The new compiler-only implementation still conforms with ANSI,
4382 but acts a little different than before. Besides the obvious
4383 changes in performance tradeoffs (that the cost per form passed
4384 to EVAL has gone up, and the cost per form executed by EVAL
4385 has gone down), the behavior of the system changes a little
4386 because there are no longer any interpreted function objects.
4387 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4388 e.g. doing COMPILE on the output of interactive DEFUN is
4390 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4392 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4393 has changed from (:CL) to NIL.
4394 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4395 e.g. #\Newline and #\Tab, don't have names specified in the
4396 ANSI Common Lisp standard, is now based on their ASCII symbolic
4397 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4398 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4399 are no longer used for output.
4400 ** changes in internal implementation constants:
4401 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4402 4 million. (If your application spends a lot of time GCing and
4403 you have a lot of RAM, you might want to experiment with
4404 increasing it even more.)
4405 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4406 However, almost all old code should still continue to work without
4407 immediate update, as SB-C-CALL is now a (deprecated) nickname
4409 ** Old operator names in the style DEF-FOO are now deprecated in
4410 favor of new corresponding names DEFINE-FOO, for consistency with
4411 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4412 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4413 internal symbols, but a few supported extensions like
4414 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4415 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4416 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4417 etc. as you get deeper into recursive calls to the debugger
4418 command loop, instead of the old "5]", "5]]", "5]]]"
4419 sequence. (I was motivated to do this when squabbles between
4420 ILISP and SBCL left me very deeply nested in the debugger. In the
4421 short term, this change will probably provoke more ILISP/SBCL
4422 squabbles, but hopefully it will be an improvement in the long run.)
4423 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4424 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4425 function, since declaiming return types involving aliens is
4426 (1) annoyingly messy to do by hand and (2) vital to efficient
4427 compilation of code which calls such functions.
4428 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4429 longer reexported by the SB-EXT package. They're solely useful
4430 for alien code, so it seems more logical that you should get
4431 them from the SB-ALIEN package, not in SB-EXT.
4432 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4433 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4434 features. Instead, the code that they used to control is always
4435 built into the system.
4436 * many other bug fixes
4437 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4438 advantage of the new EVAL-WHEN stuff and to clean them up in
4439 general, and they are now more ANSI-compliant in a number of
4440 ways. Martin Atzmueller is responsible for a lot of this.
4441 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4443 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4444 *** correct ERROR type for various file operations
4445 *** some fixes for Lisp streams
4446 *** DEFMETHOD syntax checking
4447 *** changing old weird representation of debug information as
4448 strings (which, among their other deficiencies, don't transform
4449 correctly when you rename packages, and don't change their
4450 print representation when you change things like *PACKAGE*
4451 and *PRINT-LENGTH*) to symbols and lists of symbols
4452 He also made several improvements and fixed several bugs in DESCRIBE.
4453 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4455 *** misbehavior of WRITE-STRING/WRITE-LINE
4456 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4457 and several other LOOP problems as well
4458 *** DIRECTORY when similar filenames are present
4459 *** DEFGENERIC with :METHOD options
4460 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4461 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4462 *** argument ordering in FIND with :TEST option
4463 *** mishandled package designator argument in APROPOS-LIST
4464 *** various problems in the backquote readmacro
4465 *** a bug in APROPOS
4466 *** probably some others that I'm not describing very well here,
4467 since the CVS log documents them by reference to sbcl-devel
4468 messages, and the SourceForge archives aren't working well.:-(
4469 ** Dan Barlow improved the Alpha port (and is making progress on the
4470 PPC port, for those of you who think different).
4471 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4472 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4473 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4474 continues to work on the SPARC port (for those of you in a position
4475 to look down upon our little PC-compatible boxes from a great height).
4476 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4477 and uses that copy, rather than the current dynamic value, when
4478 it's trying to decide whether to truncate output. Thus e.g.
4479 (let ((*print-lines* 50))
4480 (pprint-logical-block (stream nil)
4482 (let ((*print-lines* 8))
4483 (print (aref possiblybigthings i) stream)))))
4484 should now truncate the logical block only at 50 lines, instead of
4485 often truncating it at 8 lines, as it did before.
4486 * The doc/cmucl/ directory, containing old CMU CL documentation
4487 from the time of the fork, is no longer part of the base system.
4488 SourceForge has shut down its anonymous FTP service, and with it
4489 my original plan for distributing the old CMU CL documentation
4490 there. For now, if you need these files you can download an old
4491 SBCL source release and extract them from it.
4492 * The fasl file version number changed again, for dozens of reasons,
4493 some of which are apparent above.
4495 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4496 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4497 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4498 patch, so that DISASSEMBLE output is much nicer.
4499 * The code in the SB-PROFILE package now seems reasonably stable.
4500 I still haven't decided what the final interface should look like
4501 (I'd like PROFILE to interact cleanly with TRACE, since both
4502 facilities use function encapsulation) but if you have a need
4503 for profiling now, you can probably use it successfully with
4504 the current CMU-CL-style interface.
4505 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4506 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4507 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4508 link now returns the dangling link itself, and for similar
4509 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4510 link itself. (In these cases the old code signalled an error and
4511 looped endlessly, respectively.) Thus, DIRECTORY now works even
4512 in the presence of dangling and cyclic symbolic links.
4513 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4514 is now a supported extension again, since the consensus on
4515 sbcl-devel was that it can be useful for ordinary development
4516 work, not just for debugging SBCL itself.
4517 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4518 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4519 that currently-defined functions might be redefined later with
4520 different return types.
4521 * Hash tables can be printed readably, as inspired by CMU CL code
4522 of Eric Marsden and SBCL code of Martin Atzmueller.
4523 * better error handling in CLOS method combination, thanks to
4524 Martin Atzmueller porting Pierre Mai's CMU CL patches
4525 * more overflow fixes for >16Mbyte I/O buffers
4526 * A bug in READ has been fixed, so that now a single Ctrl-D
4527 character suffices to cause end-of-file on character streams.
4528 In particular, now you only need one Ctrl-D at the command
4529 line (not two) to exit SBCL.
4530 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4532 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4533 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4534 does the right thing.
4535 * The implementation of some type tests, especially for CONDITION
4536 types, is now tidier and maybe faster, due to CMU CL code
4537 originally by Douglas Crosher, ported by Martin Atzmueller.
4538 * Some math functions have been fixed, and there are new
4539 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4540 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4541 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4542 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4543 likely to be built into sbcl-0.7.0.)
4544 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4545 CL, ported to SBCL by Martin Atzmueller)
4546 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4547 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4548 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4549 * There's a new slam.sh hack to shorten the edit/compile/debug
4550 cycle for low-level changes to SBCL itself, and a new
4551 :SB-AFTER-XC-CORE target feature to control the generation of
4552 the after-xc.core file needed by slam.sh.
4553 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4554 COMPILE-FILE is no longer supported, so that now every function
4555 gets an entry point, so that block compilation looks a little
4556 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4557 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4558 returns the number of bytes consed since the system started,
4559 rather than the number consed since the first time the function
4560 was called. (The new definition parallels ANSI functions like
4561 CL:GET-INTERNAL-RUN-TIME.)
4562 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4563 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4564 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4565 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4566 * Fasl file version numbers are now independent of the target CPU,
4567 since historically most system changes which required version
4568 number changes have affected all CPUs equally. Similarly,
4569 the byte fasl file version is now equal to the ordinary
4572 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4573 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4574 is no longer recognized. I apologize for this, because it was
4575 listed in SB-EXT as a supported extension, but I found that
4576 its existing behavior was poorly specified, as well as incorrectly
4577 specified, and it looked like too much of a mess to straighten it
4578 out. I have enough on my hands trying to get ANSI stuff to work..
4579 * many patches ported from CMU CL by Martin Atzmueller, with
4580 half a dozen bug fixes in pretty-printing and the debugger, and
4581 half a dozen others elsewhere
4582 * fixed bug 13: Floating point infinities are now supported again.
4583 They might still be a little bit flaky, but thanks to bug reports
4584 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4585 as flaky as they were.
4586 * The --noprogrammer command line option is now supported. (Its
4587 behavior is slightly different in detail from what the old man
4588 page claimed it would do, but it's still appropriate under the
4589 same circumstances that the man page talks about.)
4590 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4591 are now supported, and enabled by default. Thus, the compiler can
4592 handle many floating point and complex operations much less
4593 inefficiently. (Thus e.g. you can implement a complex FFT
4595 * The compiler now detects type mismatches between DECLAIM FTYPE
4596 and DEFUN better, and implements CHECK-TYPE more correctly, and
4597 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4598 thanks to patches from Martin Atzmueller.
4599 * various fixes to make the cross-compiler more portable to
4600 ANSI-conforming-but-different cross-compilation hosts (notably
4601 Lispworks for Windows, following bug reports from Arthur Lemmens)
4602 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4603 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4604 fixed thanks to Pierre Mai's CMU CL patches.
4605 * fixes to keep the system from overflowing internal counters when
4606 it tries to use i/o buffers larger than 16M bytes
4607 * fixed bug 45a: Various internal functions required to support
4608 complex special functions have been merged from CMU CL sources.
4609 (When I was first setting up SBCL, I misunderstood a compile-time
4610 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4611 * improved support for type intersection and union, fixing bug 12
4612 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4613 more obscure bugs as well
4614 * some steps toward byte-compiling non-performance-critical
4615 parts of the system, courtesy of patches from Martin Atzmueller
4616 * Christophe Rhodes has made some debian packages of sbcl at
4617 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4618 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4619 stable, but are nonetheless usable. When he's ready, I'd be happy
4620 to add them to the SourceForge "File Releases" section. (And if
4621 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4622 * new fasl file format version number (because of changes in
4623 internal representation of (OR ..) types to accommodate the new
4624 support for (AND ..) types, among other things)
4626 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4627 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4629 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4631 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4632 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4633 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4634 * DESCRIBE now works on structure objects again.
4635 * Most function call argument type mismatches are now handled as
4636 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4637 know whether the function will be redefined before the call is
4638 executed. (The compiler could flag local calls with full WARNINGs,
4639 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4640 it doesn't keep track of enough information to know whether calls
4641 are local in this sense.)
4642 * Compiler output is now more verbose, with messages truncated
4643 later than before. (There should be some supported way for users
4644 to override the default verbosity, but I haven't decided how to
4645 provide it yet, so this behavior is still controlled by the internal
4646 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4647 src/compiler/ir1util.lisp.)
4648 * Fasl file format version numbers have increased again, because
4649 support for the Gray streams extension changes the layout of the
4650 system's STREAM objects.
4651 * The Gray subclassable streams extension now works, thanks to a
4652 patch from Martin Atzmueller.
4653 * The full LOAD-FOREIGN extension (not just the primitive
4654 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4655 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4656 but like most other programs, it defaults to copying the Unix
4657 environment from the original process instead of starting the
4658 new process in an empty environment.
4659 * Extensions which manipulate the Unix environment now support
4660 an :ENVIRONMENT keyword option which doesn't smash case or
4661 do other bad things. The CMU-CL-style :ENV option is retained
4662 for porting convenience.
4663 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4664 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4666 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4668 * A patch from Martin Atzmueller seems to have solved the SIGINT
4669 problem, and as far as we know, signal-handling now works cleanly.
4670 (If you find any new bugs, please report them!)
4671 * The system no longer defaults Lisp source file names to types
4672 ".l", ".cl", or ".lsp", but only to ".lisp".
4673 * The compiler no longer uses special default file extensions for
4674 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4675 seems to expect a single default extension for all compiled code,
4676 and there's no compelling reason to try to stretch the standard
4677 to allow two different extensions.) Instead, byte-compiled files
4678 default to the same extension as native-compiled files.
4679 * Fasl file format version numbers have increased again, because
4680 a rearrangement of internal implementation packages made some
4681 dumped symbols in old fasl files unreadable in new cores.
4682 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4683 many fewer weird special cases.
4684 * Bug #17 (differing COMPILE-FILE behavior between logical and
4685 physical pathnames) has been fixed, and some related misbehavior too,
4686 thanks to a patch from Martin Atzmueller.
4687 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4688 by Tim Moore, ported to SBCL by Martin Atzmueller.
4689 * Martin Atzmueller fixed several filesystem-related problems,
4690 including bug #36, in part by porting CMU CL patches, which were
4691 written in part by Paul Werkowski.
4692 * More compiler warnings in src/runtime/ are gone, thanks to
4693 more patches from Martin Atzmueller.
4694 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4697 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4699 * DESCRIBE now works on CONDITION objects.
4700 * The debugger now handles errors which arise when trying to print
4701 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4703 * The build system now uses an additional file, customize-target-features.lisp,
4704 to allow local modifications to the target *FEATURES* list. (The point of
4705 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4706 debugging features enabled, without having to worry about propagating it
4707 into everyone's system when I do a "cvs update".) When no
4708 customize-target-features.lisp file exists, the target *FEATURES* list
4709 should be constructed the same way as before.
4710 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4711 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4712 warn about behavior which is undefined under the ANSI spec. Note: This
4713 is specified by ANSI, but it's not very popular with programmers.
4714 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4715 macro in the SBCL sources for an example of a workaround which you
4716 might use to make portable ANSI-standard code which does what you want.
4717 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4718 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4719 when it's used as a non-toplevel form. (This is required in order
4720 to implement the DEFCONSTANT-EQX macro.)
4721 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4722 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4723 funny things, due to bugs in the implementation of EVAL-WHEN
4724 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4725 non-toplevel DEFCONSTANTs are uncommon.)
4726 * The core file version number and fasl file version number have been
4727 incremented, because the old noncompliant DEFCONSTANT behavior involved
4728 calling functions which no longer exist, and because I also took the
4729 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4730 * fixed bug 1 (error handling before read-eval-print loop starts), and
4731 redid debugger restarts and related debugger commands somewhat while
4733 ** The QUIT debugger command is gone, since it did something
4734 rather different than the SB-EXT:QUIT command, and since it never
4735 worked properly outside the main toplevel read/eval/print loop.
4736 Invoking the new TOPLEVEL restart provides the same functionality.
4737 ** The GO debugger command is also gone, since you can just invoke
4738 the CONTINUE restart directly instead.
4739 ** The TOP debugger command is also gone, since it's redundant with the
4740 FRAME 0 command, and since it interfered with abbreviations for the
4742 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4744 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4745 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4746 some porting work by Martin Atzmueller)
4747 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4748 with a boatload of patches which he ported to SBCL. Now that those
4750 ** The system tries to make sure that its low-priority messages
4751 are prefixed by semicolons, to help people who like to use
4752 syntax highlighting in their ILISP buffer. (This patch
4753 was originally due to Raymond Toy.)
4754 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4755 patches originally written by Raymond Toy.
4756 ** The compiler understands coercion between single-value and
4757 multiple-VALUES type expressions better, getting rid of some very
4758 weird behavior, thanks to patches originally by Robert MacLachlan
4759 and Douglas Crosher.
4760 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4761 lambda lists, thanks to a patch originally by Pierre Mai.
4762 ** The system no longer bogusly warns about "abbreviated type
4764 ** The compiler gets less confused by inlining and RETURN-FROM,
4765 thanks to some patches originally by Tim Moore.
4766 ** The system no longer hangs when dumping circular lists to fasl
4767 files, thanks to a patch originally from Douglas Crosher.
4768 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4769 undefined function error.
4770 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4771 in structure slot initforms) for now, documented workaround instead:-|
4772 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4773 * fixed bug 5: added stubs for various Gray stream functions called
4774 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4775 installed, at least appropriate type errors are generated
4776 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4777 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4778 consistently in DEFMETHOD forms.
4779 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4780 it doesn't seem to affect SBCL after all
4781 * The C runtime system now builds with better optimization and many
4782 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4784 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4786 * The system is now under CVS at SourceForge (instead of the
4787 CVS repository on my home machine).
4788 * The new signal handling code has been tweaked to treat register
4789 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4790 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4791 downstream, e.g. in debug-int.lisp, has implicit dependencies
4792 on the unsignedness of integer representation of machine words,
4793 and that caused the system to bomb out with infinite regress
4794 when trying to recover from type errors involving signed values,
4795 e.g. (BUTLAST '(1 2 3) -1).)
4796 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4797 (This was one of the bugs Peter Van Eynde reported back in July.)
4798 * The system now uses code inspired by Colin Walters' O(N)
4799 implementation of MAP (from the cmucl-imp@cons.org mailing
4800 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4801 inline the MAP operation, and there is more than one
4802 sequence argument to the MAP call (so that it can't just
4803 do ETYPECASE once and for all based on the type of the
4804 single sequence argument). (The old non-inline implementation
4805 of the general M-argument sequence-of-length-N case required
4806 O(M*N*N) time when any of the sequence arguments were LISTs.)
4807 * The QUIT :UNIX-CODE keyword argument has been renamed to
4808 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4809 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4811 * Raymond Wiker's patches to port dynamic loading from Linux to
4812 FreeBSD have been added.
4813 * The BUGS file is now more nearly up to date, thanks in large part
4814 to Martin Atzmueller's review of it.
4815 * The debugger now flushes standard output streams before it begins
4816 its output ("debugger invoked" and so forth).
4817 * The core version number and fasl file version number have both
4818 been incremented, because of incompatible changes in the layout
4820 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4821 used to not be called for a saved Lisp image.)
4822 * Martin Atzmueller's version of a patch to fix a compiler crash,
4823 as posted on sbcl-devel 13 September 2000, has been installed.
4824 * Instead of installing Martin Atzmueller's patch for the
4825 compiler transform for SUBSEQ, I deleted the compiler transform,
4826 and transforms for some similar consing operations.
4827 * A bug in signal handling which kept TRACE from working on OpenBSD
4829 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4830 away by constant folding
4831 * The system now defines its address space constants in one place
4832 (in the Lisp sources), and propagates them automatically elsewhere
4833 (through GENESIS and the sbcl.h file). Therefore, patching the
4834 address map is less unnecessarily tedious and error-prone. The
4835 Lisp names of address space constants have also been systematized.
4836 * CVS tags like dollar-Header-dollar have been removed from
4837 the sources, because they have never saved me trouble and
4838 they've been source of trouble working with patches and other
4839 diff-related operations.
4840 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4841 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4843 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4845 * The system has been ported to OpenBSD.
4846 * The system now compiles with a simple "sh make.sh" on the systems
4847 that it's supported on. I.e., now you no longer need to tweak
4848 text in the target-features.lisp-expr and symlinks in src/runtime/
4849 by hand, the make.sh takes care of it for you.
4850 * The system is no longer so grossly inefficient when compiling code
4851 involving vectors implemented as general (not simple) vectors (VECTOR T),
4852 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4853 which dares to use the various sequence functions on non-simple
4854 vectors, takes less of a performance hit.
4855 * There is now a primitive type predicate VECTOR-T-P
4856 to test for the (VECTOR T) type, so that e.g.
4857 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4858 can now be compiled with some semblance of efficiency. (The old code
4859 turned the type declaration into a full call to %TYPEP at runtime!)
4860 * AREF on (VECTOR T) is still not fast, since it's still compiled
4861 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4862 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4863 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4864 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4865 without making full calls to SUBTYPEP at runtime.
4866 (Some analogous efficiency issues for non-simple vectors specialized to
4867 element types other than T, or for non-simple multidimensional arrays,
4868 have not been addressed. They could almost certainly be handled the
4869 same way if anyone is motivated to do so.)
4870 * The changes in array handling break binary compatibility, so
4871 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4872 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4873 instead of (VALUES T T).
4874 * By following the instructions that Dan Barlow posted to sbcl-devel
4875 on 2 July 2000, I was able to enable primitive dynamic object
4876 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4877 functionality is not implemented (since it calls ld to resolve
4878 library references automatically, requiring RUN-PROGRAM for its
4879 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4880 try to resolve library references) is now supported.
4881 * The system now flushes the standard output streams when it terminates,
4882 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4883 them at several other probably-convenient times, e.g. in each pass of
4884 the toplevel read-eval-print loop, and after evaluating a form given
4885 as an "--eval" command-line option. (These changes were motivated by a
4886 discussion of stream flushing issues on cmucl-imp in August 2000.)
4887 * The source transform for TYPEP of array types no longer assumes
4888 that an array whose element type is a not-yet-defined type
4889 is implemented as an array of T, but instead punts, so that the
4890 type will be interpreted at runtime.
4891 * There is now some support for cross-compiling in make.sh: each of
4892 the phases of make.sh has its own script. (This should be transparent
4893 to people doing ordinary, non-cross-compile builds.)
4894 * Since my laptop doesn't have hundreds of megabytes of memory like
4895 my desktop machine, I became more motivated to do some items on
4896 my to-do list in order to reduce the size of the system a little:
4897 ** Arrange for various needed-only-at-cold-init things to be
4898 uninterned after cold init. To support this, those things have
4899 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4900 symbols with such names are now uninterned after cold init).
4901 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4902 fasl files for cold load.
4903 ** Remove the old compiler structure pooling code (which used to
4904 be conditional on the target feature :SB-ALLOC) completely.
4905 ** Redo the representation of some data in cold init to be more compact.
4906 (I also looked into supporting byte compiled code at bootstrap time,
4907 which would probably reduce the size of the system a lot, but that
4908 looked too complicated, so I punted for now.)
4909 * The maximum signal nesting depth in the src/runtime/ support code has
4910 been reduced from 4096 to 256. (I don't know any reason for the very
4911 large old value. If the new smaller value turns out to break something,
4912 I'll probably just bump it back up.)
4913 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4915 * Many, many bugs reported by Peter Van Eynde have been added to
4916 the BUGS list; some have even been fixed.
4917 * While enabling dynamic object file loading, I tried to make the
4918 code easier to understand, renaming various functions and variables
4919 with less ambiguous names, and changing some function calling
4920 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4921 * While trying to figure out how to do the OpenBSD port, I tried to
4922 clean up some of the code in src/runtime/. In particular, I dropped
4923 support for non-POSIX signal handling, added various comments,
4924 tweaked the code to reduce the number of compilation warnings, and
4925 renamed some files to increase consistency.
4926 * To support the new automatic configuration functionality in make.sh,
4927 the source file target-features.lisp-expr has been replaced with the
4928 source file base-target-features.lisp-expr and the machine-generated
4929 file local-target-features.lisp-expr.
4930 * fixed a stupid quoting error in make.sh so that using CMU CL
4931 "lisp -batch" as cross-compilation host works again
4933 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4935 * DESCRIBE no longer tries to call itself recursively to describe
4936 bound/fbound values, so that it no longer fails on symbols which are
4937 bound to themselves (like keywords, T, and NIL).
4938 * DESCRIBE now works on generic functions.
4939 * The printer now prints less-screwed-up representations of closures
4940 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4941 * A private symbol is used instead of the :EMPTY keyword previously
4942 used to mark empty slots in hash tables. Thus
4943 (DEFVAR *HT* (MAKE-HASH-TABLE))
4944 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4945 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4946 now does what ANSI says that it should. (You can still get
4947 similar noncompliant behavior if bang on the hash table
4948 implementation with all the symbols you get back from
4949 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4950 This breaks binary compatibility, since tests for equality to
4951 :EMPTY are wired into things like the macroexpansion of
4952 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4954 * There's now a minimal placeholder implementation for CL:STEP,
4955 as required by ANSI.
4956 * An obscure bug in the interaction of the normal compiler, the byte
4957 compiler, inlining, and structure predicates has been patched
4958 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4959 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4961 * Missing ordinary arguments in a macro call are now detected even
4962 when the macro lambda list contains &KEY or &REST.
4963 * The debugger no longer complains about encountering the top of the
4964 stack when you type "FRAME 0" to explicitly instruct it to go to
4965 the top of the stack. And it now prints the frame you request even
4966 if it's the current frame (instead of saying "You are here.").
4967 * As specified by ANSI, the system now always prints keywords
4968 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4970 * The default initial SIZE of HASH-TABLEs is now smaller.
4971 * Type information from CLOS class dispatch is now propagated
4972 into DEFMETHOD bodies, so that e.g.
4973 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4975 is now basically equivalent to
4976 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4977 (DECLARE (TYPE SINGLE-FLOAT X))
4979 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4980 operation, without having to do run-time type dispatch.
4981 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4982 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4983 * Since I don't seem to be making big file reorganizations very often
4984 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4985 is overflowing my ability to conveniently back them up), I've finally
4986 checked the system into CVS. (The CVS repository is on my home system,
4987 not at SourceForge -- putting it on SourceForge might come later.)
4988 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4989 high-level GC-NOTIFY-FOO functions send their output. (There's
4990 still very little control of where low-level verbose GC functions
4991 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4992 less than it used to -- the GC-NOTIFY-FOO functions are now under
4993 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4994 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4995 in only one place in the source code, and propagates it automatically
4996 everywhere that it's needed. Thus e.g. when I bump the version from
4997 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4998 * The C source files now include boilerplate legalese and documentation
4999 at the head of each file (just as the Lisp source files already did).
5000 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5001 to his page will be replaced with a link to his new CLiki service.
5003 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5005 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5006 * The build process now looks for GNU make under the default name "gmake",
5007 instead of "make" as it used to. If GNU make is not available as "gmake"
5008 on your system, you can change this default behavior by setting the
5009 GNUMAKE environment variable.
5010 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5011 can build without error under CMU CL.
5013 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5015 * There is now a partial SBCL user manual (with some new text and some
5016 text cribbed from the CMU CL manual).
5017 * The beginnings of a profiler have been added (starting with the
5018 CMU CL profiler and simplifying and cleaning up). Eventually the
5019 main interface should be through the TRACE macro, but for now,
5020 it's still accessed through vaguely CMU-CL-style functions and macros
5021 exported from the package SB-PROFILE.
5022 * Some problems left over from porting CMU CL to the new
5023 cross-compilation bootstrap process have been cleaned up:
5024 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5025 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5026 part when getting rid of the compiler *BACKEND* stuff.)
5027 ** The value of *NULL-TYPE* was screwed up, because it was
5028 being initialized before the type system knew the final
5029 definition of the 'NULL type. This screwed up several key
5030 optimizations in the compiler, causing inefficiency in all sorts
5031 of places. (I found it because I wanted to understand why
5032 GET-INTERNAL-RUN-TIME was consing.)
5033 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5034 PROCLAIM FTYPE information. Unfortunately this broke binary
5035 compatibility again, since now the forms output by DEFGENERIC
5036 to refer to functions which didn't exist in 0.6.3.
5037 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5038 can use the new (as of 0.6.3) transform for SOME into MAP into
5040 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5041 values to (INTEGER 0 1000000), so that the time code will no longer
5042 occasionally get blown up by Linux returning 1000000 microseconds
5043 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5044 its output conform to the ANSI spec. (Alas, this makes its output
5045 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5046 * A full call to MAP NIL with a single sequence argument no longer conses.
5047 * fixes to problems pointed out by Martin Atzmueller:
5048 * The manual page no longer talks about multiprocessing as though
5049 it were currently supported.
5050 * The ILISP support patches have been removed from the distribution,
5051 because as of version 5.10.1, ILISP now supports SBCL without us
5052 having to maintain patches.
5053 * added a modified version of Raymond Toy's recent CMU CL patch for
5054 EQUALP comparison of HASH-TABLE
5056 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5058 * The system still can't cross-compile itself with
5059 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5060 entails), but at least it can compile more of itself that way
5061 than it used to be able to, and various buglets which were uncovered
5062 by trying to cross-compile itself that way have now been fixed.
5063 * This release breaks binary compatibility again. This time
5064 at least I've incremented the FASL file format version to 2, so that the
5065 problem can be detected reliably instead of just causing weird errors.
5066 * various new style warnings:
5067 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5068 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5069 ** using the lexical binding of a variable named in the *FOO* style
5070 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5071 as specified by ANSI.
5072 * *RANDOM-STATE* is no longer automatically initialized from
5073 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5074 default behavior of the system is to repeat its behavior every time
5075 it's run. If you'd like to change this behavior, you can always
5076 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5077 old convention there was no comparably easy way to get the system to
5078 repeat its behavior every time it was run.
5079 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5080 FTYPE declarations has been removed, in favor of their ANSI
5081 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5082 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5083 the types of their sequence arguments can be determined at compile time.
5084 This is done through a new open code expansion for MAP which eliminates
5085 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5086 argument types can be determined at compile time.
5087 * The optimizer now transforms COERCE into an identity operation when it
5088 can prove that the coerced object is already of the correct type. (This
5089 can be a win for machine generated code, including the output of other
5090 optimization transforms, such as the MAP transform above.)
5091 * Credit information has been moved from source file headers into CREDITS.
5092 * Source file headers have been made more standard.
5093 * The CASE macro now compiles without complaining even when it has
5096 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5098 * (Note that the way that the PCL macroexpansions were rewritten
5099 to accommodate the change in DEFGENERIC below breaks binary
5100 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5101 not run under sbcl-0.6.2. Once we get out of alpha releases,
5102 i.e. hit release 1.0.0, we'll probably try to maintain binary
5103 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5104 and sbcl-1.4.4. Until then, however, it might be fairly common
5105 for maintenance releases to break binary compatibility.)
5106 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5108 * The reporting of unhandled signals has been changed to print some
5109 explanatory text as well as the report form. (Previously only
5110 the report form was printed.)
5111 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5112 it defines, so that the compiler no longer issues undefined function
5113 warnings for compiled-but-not-yet-loaded generic functions.
5114 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5115 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5116 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5117 section of the ANSI spec are supported.
5118 * The "" nickname for the "KEYWORD" package has been removed.
5119 The reader still handles symbol tokens which begin with a package marker
5120 as keywords, but it doesn't expose its mechanism for doing so in the
5121 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5122 * The system now issues STYLE-WARNINGs for contradictory TYPE
5123 proclamations. (Warnings for contradictory FTYPE proclamations would
5124 be nice too, but those can't be done usefully unless the type system
5125 is made smarter about FUNCTION types.)
5126 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5127 systematized, so that "*target-*.lisp is supposed to exist only on the
5128 target and imply that there's a related file which exists on the
5129 host, and *host-*.lisp is supposed to exist only on the host and imply
5130 that there's a related file which exists on the target. This involves a
5131 lot of renaming. Hopefully the acute confusion caused by the renaming
5132 will be justified by the reduction in chronic confusion..
5133 ** runtime-type.lisp -> early-target-type.lisp
5134 ** target-type.lisp -> late-target-type.lisp
5135 ** early-host-format.lisp -> early-format.lisp
5136 ** late-host-format.lisp -> late-format.lisp
5137 ** host-error.lisp -> misc-error.lisp
5138 ** early-error.lisp -> early-target-error.lisp
5139 ** late-error.lisp -> late-target-error.lisp
5140 ** host-defboot.lisp -> early-defboot.lisp
5141 ** code/misc.lisp -> code/target-misc.lisp
5142 ** code/host-misc.lisp -> code/misc.lisp
5143 ** code/numbers.lisp -> code/target-numbers.lisp
5144 ** code/early-numbers.lisp -> numbers.lisp
5145 ** early-host-type.lisp -> early-type.lisp
5146 ** late-host-type.lisp -> late-type.lisp
5147 ** host-typep.lisp -> typep.lisp
5148 ** load.lisp -> target-load.lisp
5149 ** host-load.lisp -> load.lisp
5150 ** host-disassem.lisp -> disassem.lisp
5151 ** host-insts.lisp -> insts.lisp
5152 ** byte-comp.lisp -> target-byte-comp.lisp
5153 ** host-byte-comp.lisp -> byte-comp.lisp
5154 ** host-signal.lisp -> signal.lisp
5155 ** host-defstruct.lisp -> defstruct.lisp
5156 ** late-target-type.lisp -> deftypes-for-target.lisp
5157 Furthermore, several other previously target-only files foo.lisp (e.g.
5158 hash-table.lisp and random.lisp) have been split into a target-and-host
5159 foo.lisp file and a target-only target-foo.lisp file, with their key type
5160 definitions in the target-and-host part, so that the cross-compiler will
5161 know more about target types.
5162 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5163 gone away. In their place are various *BACKEND-FOO* variables
5164 corresponding to the slots of the old structure.
5165 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5166 into the target SBCL has been fixed.
5167 * The chill.lisp system for loading cold code into a running SBCL
5169 * Support for the CMU CL "scavenger hook" extension has been removed.
5170 (It was undocumented and unused in the CMU CL sources that SBCL was
5171 derived from, and stale in sbcl-0.6.1.)
5172 * Various errors in the cross-compiler type system were detected
5173 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5174 (enabling various consistency checks). Many of them were fixed,
5175 but some hard problems remain, so the compiler is back to
5176 running without *TYPE-SYSTEM-INITIALIZED* for now.
5177 * As part of the cross-compiler type system cleanup, I implemented
5178 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5179 * I have started adding UNCROSS calls throughout the type system
5180 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5181 on cross-compiler input files will be able to go away, and various
5183 * CONSTANTP now returns true for quoted forms (as explicitly required
5186 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5188 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5189 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5190 (MAKE-LIST -1). In the longer term, it ought to become true
5191 that declarations are assertions even at SAFETY 1. For now, it's not
5192 quite true even at SAFETY 3, but it's at least more nearly true..
5193 (Note that this change seems to increases the size of the system by
5194 O(5%) and to decrease the speed of the compiler by 20% or more.)
5195 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5196 for the problem of printing dozens of lines of distracting information
5197 about low-level system machinery as part of the top stack frame
5198 on entry to the debugger when an undefined function was called.
5199 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5200 is not reset to COMMON-LISP-USER.
5201 * Compilation of stuff related to dyncount.lisp has been made conditional
5202 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5203 smaller. The various dyncount-related symbols have been moved into
5204 a new "SB-DYNCOUNT" package.
5205 * tty-inspect.lisp has been renamed to inspect.lisp.
5206 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5207 feature has gone away. (When we eventually port to other flavors of
5208 libc and/or Unix, we'll try to make the differences between flavors
5209 invisible at the user level.)
5210 * Various other *FEATURES* tags, and/or their associated conditionals,
5211 have been removed if obsolescent, or given better documentation, or
5212 sometimes given more-mnemonic names.
5214 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5216 * tidied up "make.sh" script
5217 * tidied up system directory structure
5218 * better "clean.sh" behavior
5219 * added doc/FOR-CMUCL-DEVELOPERS
5220 * many many small tweaks to output format, e.g. removing possibly-confusing
5221 trailing #\. character in DESCRIBE-INSTANCE
5222 * (EQUALP #\A 'A) no longer signals an error.
5223 * new hashing code, including EQUALP hashing
5224 * tidied up Lisp initialization and toplevel
5225 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5226 * command line argument processing
5227 * added POSIX-GETENV function to deal with Unix-ish environment variables
5228 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5229 terminating SBCL on EOF
5230 * non-verbose GC by default
5231 * There is no more "sbcl" shell script; the sbcl file is now the C
5232 runtime executable (just like CMU CL).
5233 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5235 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5236 symbol and package information as Lisp native symbol and package objects
5237 instead of strings naming symbols and strings naming packages. This way,
5238 whenever packages are renamed (as in warm init), debug information is
5239 transformed along with everything else.
5240 * tweaked the optimization policy declarations which control the building
5241 of SBCL itself. Now, among other things, the system no longer saves
5242 source location debugging information. (This helps two problems at once
5243 by reducing SBCL size and by keeping SBCL from trying to look for its
5244 sources -- which may not exist -- when reporting errors.)
5245 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5246 debugging and testing purposes
5247 * cleaned up printing, making the printer call PRINT-OBJECT for
5248 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5249 methods, giving nearly-ANSI behavior
5250 * converted almost all special variables to use *FOO* naming convention
5251 * deleted PARSE-TIME functionality, since it can be done portably
5252 * moved some files out of cold init into warm init
5253 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5255 * regularized formatting of source files
5256 * added an install.sh script
5257 * fixed ridiculous memory usage of cross-compiler by making
5258 compiler/alloc.lisp not try to do pooling unless it can hook
5259 itself into the GC of the cross-compilation host. Now the system
5260 builds nicely on my old laptop.
5261 * added :SB-ALLOC in target-features.lisp-expr
5262 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5263 was not implemented)
5264 * re-did condition handling and note reporting in the compiler. Notes
5265 are no longer handled by signalling conditions. Style warnings
5266 and warnings are handled more correctly and reported in such a way
5267 that it's easy to find one or the other in your output (so that you
5268 can e.g. figure out which of many problems caused COMPILE-FILE to
5270 * changed the severity of several compiler warnings from full WARNING
5271 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5272 compiler note reporting so that it doesn't use the condition system
5273 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5274 COMPILE-FILE command)
5275 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5276 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5277 no longer supported, since their implementation was deeply intertwingled
5278 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5279 * removed bogus "support" for compiler macros named (SETF FOO), and
5280 removed the compiler macro for SETF INFO (but only after making a fool
5281 of myself on the cmucl-imp mailing list by posting a bogus patch for
5282 DEFINE-COMPILER-MACRO..)
5283 * Compiled files containing forms which have side effects on the Lisp
5284 reader (such as DEFPACKAGE forms) are now handled more correctly.
5285 (Compiler queuing of top level lambdas has been suppressed by setting
5286 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5287 * deleted various currently-unused source files, e.g. gengc.lisp. They
5288 may be added back at some point e.g. when porting to other architectures,
5289 but until they are it's distracting to distribute them and to try to
5291 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5292 there were so many of them they're just distractions, and UNCROSS is
5293 known to be able to handle the current sources
5294 * moved PROFILE functionality into TRACE, so that it will be clear
5295 how the wrapping and unwrapping of functions when you profile them
5296 interacts with the wrapping and unwrapping of functions when you
5297 trace them. (Actually, the functionality isn't there yet, but at least
5298 the interface specification is there. Hopefully, the functionality will
5299 arrive with some future maintenance release.)
5300 * removed host-oops.lisp
5301 * changed signature of QUIT function to allow UNIX-CODE argument
5302 * fixed READ-SEQUENCE bug
5303 * tweaked verbose GC output so that it looks more like the progress
5304 output that ANSI specifies for functions like LOAD
5305 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5306 * added <http://sbcl.sourceforge.com> to the banner information printed by