1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
3 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
4 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
5 of SB-THREAD:THREAD-ERROR-THREAD.
6 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
7 * new feature: docstrings for local and anonymous functions are no longer
8 discarded. (thanks to Leslie Polzer)
9 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
10 values in other threads.
11 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
12 about object allocation.
13 * optimization: division of a real float by a complex float is implemented
14 with a specialised code sequence.
15 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
16 keywords is an order of magnitude faster.
17 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
18 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
19 methods, and similarly for non-standard metaclass classes as long as there
20 are no methods additional on MAKE-INSTANCE.
21 * optimization: more efficient type-checks for FIXNUMs when the value
22 is known to be a signed word on x86 and x86-64.
23 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
24 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
26 * optimization: compiler is smarter about delegating argument type checks to
28 * optimization: several character functions are now compiled somewhat more
29 efficiently. (reported by Lynn Quam)
30 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
31 * improvement: less unsafe constant folding in floating point arithmetic,
32 especially for mixed complex/real -float operations.
33 * optimization: constant double and single floats are stored in native
34 unboxed format on x86[-64].
35 * optimization: smarter code for arithmetic operations with constant floats,
36 complex floats, or integers on x86[-64].
37 * optimization: smarter code for conjugate/multiplication of float complexes
38 and abs/negate of floats on x86-64.
39 * optimization: more efficient complex float and real float operations on
41 * improvement: complex float division is slightly more stable.
42 * improvement: DESCRIBE output has been reworked to be easier to read and
43 contains more pertinent information.
44 * improvement: failure to provide requested stack allocation compiler notes
45 provided in all cases (requested stack allocation not happening without a
46 note being issued is now considered a bug.)
47 * bug fix: SB-POSIX exports the documented types and functions
48 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
49 types. (reported by "abhi")
50 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
51 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
52 (thanks to Paul Khuong)
53 * bug fix: looping around HANDLER-CASE could silently consume stack space
54 on each iteration. (reported by "foobar")
55 * bug fix: better error signalling when calls to functions seeking elements
56 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
57 (reported by Tobias Rittweiler)
58 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
59 directory components now works as it used to. (various prolems reported by
60 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
61 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
62 (reported by Elliot Slaughter, thanks to Stas Boukarev)
63 * bug fix: bogus undefined variable warnings from fopcompiled references to
64 global variables. (thanks to Lars Rune Nøstdal)
65 * bug fix: foreign function names should now appear in backtraces on
66 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
67 * bug fix: SETF compiler macro documentation strings are not discarded
69 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
70 (thanks to Alex Plotnick)
71 * bug fix: SLEEP accepts large integer arguments, truncating them to
72 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
73 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
74 * bug fix: compiler notes for expensive slot type checks could be emitted
75 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
77 changes in sbcl-1.0.29 relative to 1.0.28:
78 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
79 https://bugs.launchpad.net/sbcl
80 Bugs can be reported directly there, or by sending email to
81 sbcl-bugs@lists.sourceforge.net
82 (no subscription required.)
83 * minor incompatible change: under weak type checking policy integer
84 types are weakened less aggressively.
85 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
86 allowed to return, which causes SBCL to quit with exit status 0. Previously
87 if the function returned with a small integer return value, that value
88 was accidentally reused as the exit status.
89 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
90 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
91 :HASH-FUNCTION argument. Refer to user manual for details.
92 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
94 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
95 microseconds since the Unix epoch on all platforms.
96 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
97 allows the compiler to safely elide boundedness checks for special
99 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
100 the symbol, prohibits both lexical and dynamic binding. This is mainly an
101 efficiency measure for threaded platforms, but also valueable in
103 * new feature: UNC pathnames are now understood by the system on Windows.
104 * optimization: the compiler uses a specialized version of FILL when the
105 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
107 * optimization: accesses to potentially non-simple arrays where element type
108 is known are 50% faster.
109 * optimization: compiler now generates faster array typechecking code.
110 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
112 * optimization: multidimensional array accesses in the absence of type
113 information regarding array rank are approximately 10% faster due to
114 open coding of ARRAY-RANK.
115 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
116 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
118 * optimization: result of call to VECTOR can now be stack allocated.
119 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
120 as long as the resulting array is one-dimensional and has a known
121 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
122 length of the list matches the known length of the vector does not
123 allocate the list as an intermediate step. Ditto for VECTOR and simple
125 * optimization: MAKE-ARRAY can now stack allocate in the presence of
126 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
127 known element type, and is known to be simple and one dimensional.
128 * improvement: SBCL now emits a compiler note where stack allocation was
129 requested but could not be provided (not in all cases, unfortunately)
130 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
131 * improvement: pretty-printing loop has been implemented properly. (thanks
132 to Tobias Rittweiler)
133 * documentation: CLOS slot typechecing policy has been documented.
134 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
135 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
136 pointer, leading to memory faults. (thanks to Bart Botta)
137 * bug fix: better floating point exception handling on x86/OpenBSD.
138 (thanks to Josh Elsasser)
139 * bug fix: exit status from QUIT when called under --script was lost
140 (reported by Hubert Kauker)
141 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
142 same implementation of FILL to initialize the array, even if a more
143 efficient one was available (reported by Stas Boukarev, thanks to
145 * bug fix: potential miscompilation of array stack allocation on x86 and
146 x86-64. (reported by Time Tossavainen)
147 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
148 result in their subforms being treated as top level forms. (reported by
150 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
151 than a machine register could leave garbage in the high bits of the
152 result register (bug 316325).
153 * bug fix: disable address space randomization Linux/x86-64 as well,
154 not just x86-64. (reported by Ken Olum)
155 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
156 generate incorrect code.
157 * bug fix: #201; type inference for CONS and ARRAY types could derive
158 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
159 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
160 could not be assigned to or bound with PROGV. (reported by Lorenz
162 * bug fix: the value of CL:- in the inspector was the previous expression
163 evaluated rather than the expression being evaluated.
164 * bug fix: constants can no longer be locally declared special.
165 * bug fix: signals delivered to threads started from foreign land (read:
166 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
167 thread by blocking all signals and resignalling.
168 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
169 from :INITFORM, if any.
171 changes in sbcl-1.0.28 relative to 1.0.27:
172 * a number of bugs in cross-compilation have been fixed, with the ultimate
173 result that building under (at least) clisp should be much more reliable.
174 * minor incompatible changes: echo-streams now propagate unread-char to the
175 underlying input stream, and no longer permit unreading more than one
177 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
178 frames, allowing for instance more reliable backtraces.
179 * improvement: the debugger REPL can now reference lexical variables
180 by name directly for code compiled with (DEBUG 3).
181 * improvement: errors from malformed declarations now have better source
182 paths associated with them. (thanks to Tobias Rittweiler)
183 * optimization: faster local calls on x86/x86-64
184 * bug fix: some error messages for out-of-bound array indexes confused the
185 index and the bound. (thanks to Stas Boukarev)
186 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
188 * bug fix: running regressions tests in shells without OSTYPE set now works.
189 (reported by Harald Hanche-Olsen)
190 * bug fix: more robust static space exhaustion signalling from
191 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
192 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
193 docstring away instead of storing it under names such as (LAMBDA (X)).
194 (reported by Leslie Polzer)
195 * bug fix: timers could go off in the wrong order, be delayed indefinitely
196 (thanks to Ole Arndt for the patch)
197 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
198 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
199 potentially-invalid effective methods in its cache.
200 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
201 instances as well (thanks to Paul Khuong)
202 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
203 SB-POSIX:WAITPID and their C equivalents.
204 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
206 changes in sbcl-1.0.27 relative to 1.0.26:
207 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
208 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
209 * improvement: the system either recovers from stack exhaustion or dies
210 properly as opposed to leaving the user uncertain of whether the handler
211 trampled on some random memory next to the stack or having to rely on
212 --lose-on-corruption (which is still a good idea to use in production
213 because stack exhaustion can happen in signal handlers which will likely
215 * bug fix: fix gc related interrupt handling bug on ppc (regression from
216 1.0.25.37, reported by Harald Hanche-Olsen)
217 * bug fix: work around signal delivery bug in darwin (regression from
218 1.0.25.44, reported by Sidney Markowitz)
219 * bug fix: fix ERROR leaking memory (reported by David Thompson)
221 changes in sbcl-1.0.26 relative to 1.0.25:
222 * incompatible change: an interruption (be it a function passed to
223 INTERRUPT-THREAD or a timer function) runs in an environment where
224 interrupts can be enabled. The interruption can use
225 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
226 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
227 potentially running out of stack. Keep in mind that in the absence
228 of WITHOUT-INTERRUPTS some potentially blocking operation such as
229 acquiring a lock can enable interrupts.
230 * incompatible change: GC-OFF and GC-ON are removed, as they were
231 always unsafe. Use WITHOUT-GCING instead.
232 * new feature: runtime option --disable-ldb
233 * new feature: runtime option --lose-on-corruption to die at the
234 slightest hint of possibly non-recoverable errors: running out of
235 memory, stack, alien stack, binding stack, encountering a memory
236 fault, etc. In the absence of --lose-on-corruption a warning is
238 * enhancement: detect binding stack exhaustion
239 * enhancement: detect alien stack exhaustion on x86/x86-64
240 * improvement: generally more stable and reliable interrupt handling
241 * improvement: there is a per thread interruption queue,
242 interruptions are executed in order of arrival
243 * improvement: a repeating timer reschedules itself when the it has
244 finished, but expiration times are spaced equally. If an
245 expiration time is in the past it will trigger after a short grace
246 period that may give a chance to other things to run.
247 * optimization: slightly faster gc on multithreaded builds
248 * optimization: faster WITHOUT-GCING
249 * bug fix: when JOIN-THREAD signals an error, do it when not holding
250 important locks so that the debugger/handler doesn't produce
251 recursive errors or deadlock.
252 * bug fix: real-time signals are not used anymore, so no more
253 hanging when the system wide real-time signal queue gets full.
254 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
256 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
257 * bug fix: fix random memory faults related to interrupts on alpha
258 * bug fix: fix random memory faults related to interrupts on sparc
259 * bug fix: fix deadlocks related to starting threads
260 * bug fix: fix deadlines on locks on futex platforms
261 * bug fix: restore errno in signal handlers
262 * bug fix: fix deadlocks related to hash tables
263 * bug fix: fix deadlocks in pcl
265 changes in sbcl-1.0.25 relative to 1.0.24:
266 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
267 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
268 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
269 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
270 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
271 better name and does not return values so stale on multiprocessor systems.
272 Also, HOLDING-MUTEX-P was added for about the only sane usage of
274 * improvement: unithread builds keep track of MUTEX-VALUE.
275 * improvement: reading from a TWO-WAY-STREAM does not touch the output
276 stream anymore making it thread safe to have a concurrent reader and
277 a writer, for instance, in a pipe.
278 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
279 arguments, making compiler-macros for SETF-functions able to inspect
280 their constant arguments.
281 * improvement: COMPILE-FILE reports times with millisecond accuracy
282 (thanks to Luis Oliveira)
283 * optimization: CHAR-CODE type derivation has been improved, making
284 TYPEP elimination on subtypes of CHARACTER work better. (reported
285 by Tobias Rittweiler, patch by Paul Khuong)
286 * bug fix: setting alien structure fields of type struct by value now
287 computes the right offset for the memory copy.
288 * bug fix: compilation problem involving inlined calls to aliens with
289 result type VOID. (reported by Ken Olum)
290 * bug fix: #235a; sequential inline expasion in different policies no
291 longer reuses the functional from the previous expansion site.
292 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
293 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
294 * bug fix: named ENUMs in multiply-referenced alien record types no longer
295 cause an implied type redefinition. Regression from 1.0.21.29.
296 * bug fix: sign-extension of small signed return values now works with C
297 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
298 * improvements to the Windows port:
299 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
300 Westfold, thanks to Rudi Schlatte)
302 changes in sbcl-1.0.24 relative to 1.0.23:
303 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
304 vector of a multidimensional SIMPLE-ARRAY.
305 * new feature: the system now signals a continuable error if standard
306 readtable modification is attempted. (thanks to Tobias Rittweiler)
307 * new feature: DIRECTORY has been extended with a non-standard keyword
308 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
309 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
310 has been robustified and documented better. (thanks to Robert Goldman)
311 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
312 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
313 * tradeoff: constant FORMAT control strings are now compiled unless
314 SPACE > SPEED (previously only when SPEED > SPACE.)
315 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
317 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
319 * bug fix: lexical type declarations are now correctly reported by
320 SB-CLTL2. (reported by Larry D'Anna)
321 * bug fix: STRING-TO-OCTETS did not handle :START properly when
322 using UTF-8 as external format. (thanks to Luis Oliveira)
323 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
324 are signalled correctly. (thanks to Stas Boukarev)
325 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
326 designator. (thanks to Tobias Rittweiler)
327 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
328 designator, and returns T instead of the function. (thanks to
330 * bug fix: direct superclasses of STANDARD-CLASS and
331 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
332 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
333 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
334 when no class with the named slot yet exists no longer causes a
335 compile-time style-warning.
336 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
337 in safe code. (reported by Didier Verna)
338 * bug fix: #430; nested structure constructors can stack allocate.
339 * bug fix: on some 64-bit platforms dynamic space size was truncated
340 to #xffff0000 bytes. (reported by Benjamin Lambert)
341 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
342 REPL unusable. (reported by Daniel Herring)
343 * bug fix: return values of READ-SEQUENCE did not take :START into
344 account on file streams, regressions since 1.0.12.22. (reported by
345 Thomas Russ, patch by Paul Khuong)
346 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
347 method specializer used to confuse permuation vector optimization.
348 * bug fix: system inserted bogus implicit type declarations for local
349 special variables in DEFMETHOD bodies.
350 * bug fix: #354; duplicated frames in backtraces due to
351 non-tail-call-optimized XEPs to functions with return type NIL
353 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
354 initializes structure object slots according to DEFSTRUCT initforms,
355 and DEFSTRUCT forms :INCLUDEind structure classes defined using
356 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
357 (reported by Bruno Haible and Stephen Wilson)
358 * bug fix: #395; fill-pointer output streams used now support
359 element-type BASE-CHAR as well.
360 * bug fix: compiler error when attempting to derive return value of
361 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
363 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
365 * bug fix: Mac OS X binaries should now be portable between Leopard
368 changes in sbcl-1.0.23 relative to 1.0.22:
369 * enhancement: when disassembling method functions, disassembly
370 for the associated fast function is also produced.
371 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
373 * optimization: printing with *PRINT-PRETTY* true is now more
374 efficient as long as the object being printed doesn't require
375 special handling by the pretty printer.
376 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
377 now interact correctly with type declarations.
378 * partial bug fix: PCL detects infinite recursion during wrapper
379 validation. (thanks to Attila Lendvai)
380 * bug fix: #426; nested function calls are inlined properly.
381 Previously if FOO was an inline function, in calls of the form
382 (FOO (FOO ...)) the outer call was not inlined.
383 * bug fix: long long arguments passed in registers to alien
384 functions on PowerPC Linux and NetBSD are now handled correctly
385 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
387 changes in sbcl-1.0.22 relative to 1.0.21:
388 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
389 for the shared object in the current directory, but passes the native
390 namestring of the designated pathname to the operation system's shared
391 object loading function as-it.
392 * minor incompatible change: --disable-debugger toplevel option now takes
393 effect before processing of initialization files and --eval or --load
395 * new feature: new commandline argument: --script, which supports
396 shebang lines. See documentation for details. (based on work by
398 * new feature: SAVE-LISP-AND-DIE can save current values of
399 --dynamic-space-size and --control-stack-size in the executable core,
400 causing it to skip normal runtime option processing. See documentation
401 for details. (thanks to Zach Beane)
402 * enhancement: inoccous calls to EVAL or generic functions dispatching
403 on subclasses of eg. STREAM no longer cause compiler notes to appear.
404 * enhancement: the system no longer resignals errors from --load and
405 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
406 associated with the original error to be lost. (thanks to Ariel
408 * enhancement: :DONT-SAVE keyword argument has been added to
409 LOAD-SHARED-OBJECT for controlling interaction with
410 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
411 the effects of an earlier LOAD-SHARED-OBJECT call.
412 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
413 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
414 provided. (reported by Cedric St-Jean)
415 * bug fix: circularity handling in the reader did not treat raw
416 structure slots correctly. (reported by Cedric St-Jean)
417 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
418 file descriptors when there were none.
419 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
420 was broken. (reporteed by Willem Broekema)
421 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
422 pathnames without a directory.
423 * bug fix: COMPILE-FILE did not warn about undefined variable
424 references at toplevel, and LOAD of the resulting fasl did
426 * bug fix: functions with non-required arguments used to end up with
427 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
428 * bug fix: redefining a function with non-required arguments didn't
429 update the system's knowledge about its call signature properly.
430 * bug fix: fixed #431; incompatible alien record type redefinitions
431 are detected and handled. (reported by Neil Haven)
432 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
433 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
435 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
436 after alien stack frames.
437 * bug fix: strings passed to mk{s,d}temp lacked null termination
439 changes in sbcl-1.0.21 relative to 1.0.20:
440 * new feature: the compiler is able to track the effective type of a
441 generic function across method addition and removal.
442 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
443 appropriately typed structure slots without locking.
444 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
445 information like those gathered by TIME using a programming-friendly
447 * new feature: TIME reports time taken even if the form performs a
448 non-local transfer of control.
449 * enhancement: reduced conservativism on GENCGC platforms: on
450 average 45% less pages pinned (measured from SBCL self build).
451 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
452 mutate constant symbols or violate declaimed type of the symbol.
453 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
454 sleeping on the semaphore in heavily contested semaphores.
455 * bug fix: semaphores and condition variables were not interrupt
457 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
458 owned by other threads anymore.
459 * bug fix: FIND on lists called KEY outside the specified
460 subsequence. (reported by budden)
461 * bug fix: LOG doesn't use single-float intermediate results when
462 given mixed integer and double-float arguments, leading to better
463 precision. (reported by Bob Felts)
464 * bug fix: LOG with base zero returned values of inconsistent type.
466 changes in sbcl-1.0.20 relative to 1.0.19:
467 * minor incompatible change: OPTIMIZE qualities
468 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
469 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
470 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
471 * documentation: some slot access efficiency guidelines have been
472 added to the user manual.
473 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
474 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
475 as ASSOC and MEMEBER.
476 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
477 to more efficient EQ-comparison versions more often.
478 * optimization: enhanced derivation of DOLIST iteration variable type
480 * optimization: constant folding of simple (LIST ...) forms as DOLIST
482 * optimization: runtime lookup of function definitions can be
483 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
484 * optimization: compiler is able to derive the return type of
485 (AREF (THE STRING X) Y) as being CHARACTER.
486 * optimization: CLRHASH on empty hash-tables no longer does pointless
487 work. (thanks to Alec Berryman)
488 * optimization: REPLACE deftransforms don't punt when :START1 or
490 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
491 no longer emits a code deletion note. (reported by Andrew
493 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
494 functions with an odd number of &OPTIONAL arguments, a &REST
495 argument, and one or more &KEY arguments at the call site.
496 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
497 arguments appeared at call sites as well.
498 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
499 READ-LINE &co can no longer read from them afterwards. (reported
501 * bug fix: fixed #427: unused local aliens no longer cause compiler
502 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
504 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
505 alien-stack leakage. (reported by Andy Hefner)
506 * bug fix: PROGV signals an error when an attempt to violate declared
507 type of a variable or bind a constant is made.
508 * bug fix: SET signals an error when an attempt to violate declared
509 type of a variable is made.
510 * bug fix: restart computation during the execution of a restart
511 test function no longer causes infinite recursion. (reported by
513 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
514 signals an error. (thanks to Pierre Mai)
515 * bug fix: EXPORT left symbol unexported in conflict situations.
516 (thanks to Michael Weber)
517 * bug fix: correctly handle name conflicts involving CL:NIL.
518 (thanks to Michael Weber)
519 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
520 conflicts arising from USEing package with conflicting symbols
521 correctly. (thanks to Michael Weber)
523 changes in sbcl-1.0.19 relative to 1.0.18:
524 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
525 warnings that go otherwise unhandled will be muffled if they are
526 of the type that's the value of this variable.
527 * optimization: stack allocation is slightly more efficient on x86
529 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
530 where a raw slot always is initialized using the initform whose
531 type is not know sufficiently well a compile-time are now compiled
532 correctly. (reported by John Morrison)
533 * bug fix: compiler no longer makes erronous assumptions in the
534 presence of non-foldable SATISFIES types.
535 * bug fix: stack analysis missed cleanups of dynamic-extent
536 arguments in non-let-converted calls to local functions.
537 * improvements to the Windows port:
538 ** adjusted address spaces for building on both Win32 and
539 Win64. (thanks for John Connors)
540 * fixed some bugs revealed by Paul Dietz' test suite:
541 ** interval arithmetic during type derivation used inexact integer
542 to single-float coercions.
543 ** arithmetic operations involving large integers and single
544 floats give the same results in compiled and interpreted code.
545 ** deriving the result type of COERCE no longer signals an error
546 if the derived type of the second argument is a MEMBER type
547 containing invalid type specifiers.
548 ** ADJOIN with constant NIL as second argument works correctly.
549 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
551 changes in sbcl-1.0.18 relative to 1.0.17:
552 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
553 profiles only the current thread.
554 * minor incompatible change: changes to SYMBOL-VALUE of constants
555 defined with DEFCONSTANT now signal an error.
556 * enhancement: SB-SPROF now has support for wallclock profiling,
557 and is also able to profile specific threads. REPORT output
558 has also additional sorting options.
559 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
561 * optimization: structure allocation has been improved
562 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
563 ** out of line constructors are ~10% faster.
564 ** inline constructors are ~15% faster.
565 ** inline constructors are capable of dynamic extent allocation
566 (generally on x86 and x86-64, in some cases on other platforms
568 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
570 * optimization: file compiler is now able to coalesce non-circular
571 lists, non-base strings, and bit-vectors. Additionally, constants
572 are never referenced through SYMBOL-VALUE at runtime.
573 * optimization: code defining methods on PRINT-OBJECT (and other
574 generic functions in the COMMON-LISP package) now loads faster.
575 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
577 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
578 fasl is now deleted. (reported by Attila Lendvai)
579 * bug fix: READ-LINE always returned NIL for the last line in files.
580 (reported by Yoshinori Tahara)
581 * bug fix: more accurate disassembly annotations of foreign function
582 calls. (thanks to Andy Hefner)
583 * bug fix: trimming non-simple strings and non-string string
584 designators when the there is nothing to trim works properly.
585 (thanks to James Knight)
586 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
587 (thanks to Travis Cross)
588 * fixed some bugs revealed by Paul Dietz' test suite:
589 ** NIL is a valid function name (regression at 1.0.13.38)
590 ** FILL on lists was missing its return value (regression at 1.0.12.27)
591 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
592 fill pointers properly (regression at 1.0.12.23)
593 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
594 displacement indices properly (regression at 1.0.12.23)
596 changes in sbcl-1.0.17 relative to 1.0.16:
597 * temporary regression: user code can no longer allocate closure
598 variable storage on stack, due to bug 419 without explicitly
599 requesting it. Please consult sbcl-devel for advice if you need to
600 use this feature in the meanwhile.
601 * new feature: runtime argument --control-stack-size can be used to
602 adjust thread default control stack size.
603 * enhancement: improved TIME output
604 ** all times are reported using the measured accuracy (milliseconds
605 for real and GC times, microseconds for everything else.)
606 ** processor cycle counts on x86 and x86-64.
607 ** interpreted forms are counted for both evaluator modes.
608 ** number of lambdas converted by the compiler is reported.
609 ** CPU percentage report (computed from real and total run time.)
610 ** more comprehensive run time reporting, using a condenced format
611 ** interperted form, lambda, and page fault counts are omitted
613 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
615 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
616 * optimization: two argument forms of LAST are upto ~10% faster
617 in normal SPEED policies.
618 * optimization: NCONC no longer needs to heap cons its &REST list
619 in normal SPEED policies.
620 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
622 * bug fix: UNION and NUNION work with :TEST-NOT once more,
623 regression since 1.0.9.1. (thanks to Eric Marsden)
624 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
625 since 1.0.15.36. (thanks to Paul Khuong)
626 * bug fix: LAST when always returned the whole list when given a bignum
627 as the second argument.
628 * bug fix: dynamic extent allocation of nested lists and vectors
629 could leak to otherwise accessible parts.
630 * bug fix: invalid optimization of heap-allocated alien variable
632 * bug fix: fasl header checking is less vulnerable to different
633 platform word lengths.
634 * bug fix: more correct assembler syntax for GNU binutils
635 2.18.50.0.4 support. (thanks to Marijn Schouten)
636 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
638 * bug fix: the fopcompiler can handle LOCALLY forms (with no
639 declarations) successfully. (reported by Attila Lendvai)
641 changes in sbcl-1.0.16 relative to 1.0.15:
642 * minor incompatible change: revert the changes to sb-posix's error
643 signaling added in 1.0.14.
644 * minor incompatible change: change PROBE-FILE back to returning
645 NIL whenever we can't get a truename, as was the case before 1.0.14.
646 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
647 inherits from ERROR instead of just CONDITION.
648 * new feature: SB-INTROSPECT can provide source locations for instances
649 as well. (thanks to Tobias Rittweiler)
650 * optimization: binding special variables now generates smaller code
651 on threaded platforms.
652 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
653 and cases where no :TEST is given but the compiler can infer that
654 the element to search is of type (OR FIXNUM (NOT NUMBER)).
655 * optimization: better LOGNOT on fixnums.
656 * optimization: modular arithmetic for a particular requested width
657 is implemented using a tagged representation unless a better
658 representation is available.
659 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
660 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
661 for wellformedness and returns a specialized vector. (reported by
662 Francois-Rene Rideau)
663 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
664 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
665 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
666 unscheduling timer at the same time as another timer fires.
667 * bug fix: don't reschedule timers for dead threads.
668 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
669 * bug fix: copying output from RUN-PROGRAM to a stream signalled
670 bogus errors if select() was interrupted.
671 * enhancement: add support for fcntl's struct flock to SB-POSIX.
673 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
674 * enhancement: cleaner backtraces for interactive interrupts, as
675 well as other cases where the interesting frames used to be
676 obscured by interrupt handling frames.
677 * enhancement: untracing a whole package using (UNTRACE "FOO") is
678 now supported, and tracing a whole package using (TRACE "FOO") now
679 traces SETF-functions as well.
680 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
681 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
682 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
683 * unreadably printed representation of hash-tables now includes
685 * bug fix: partially fixed #188: type propagation from assignments
686 is now more efficient.
687 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
688 'DOUBLE-FLOAT) are not flushable.
689 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
690 full address of the object, and none of the tag bits.
691 * bug fix: readably printing hash-tables now respects other printer
692 control variables. (reported by Cedric St-Jean)
693 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
694 keyword with MAKE-HASH-TABLE.
695 * bug fix: export SB-POSIX:MKSTEMP.
696 * bug fix: SORT was not interrupt safe.
697 * bug fix: XREF accounts for the last node of each basic-block as
699 * bug fix: MAKE-INSTANCE optimizations interacted badly with
700 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
701 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
702 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
703 create obsolete instances in the case of redefinition or
704 obsoletion of a superclass. (thanks to Andy Hefner)
705 * bug fix: Support for the Alpha architecture has been revived; it had
706 suffered somewhat from lack of maintenance since sbcl-1.0.
707 * improvements to the Windows port:
708 ** The system detects the codepage to use at startup, instead of
709 using the value from the saved core. (thanks to Kei Suzuki)
711 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
712 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
713 (see documentation for details.)
714 * revived support for OpenBSD (contributed by Josh Elsasser)
715 * partially fixed bug #108: ROOM no longer suffers from occasional
716 (AVER (SAP= CURRENT END)) failures.
717 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
718 bodies no longer cause a WARNING to be signalled. (reported by
720 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
721 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
722 the bug in TRUNCATE.) (reported by Michael Weber)
723 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
724 no samples. (reported by Andy Hefner)
725 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
726 no longer appear as (NIL ...) frames in backtraces.
727 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
728 is now actually exported from SB-EXT as documented. (reported by
730 * bug fix: sb-aclrepl now correctly understands how to inspect
731 single-floats on 64-bit platforms where single-floats are not boxed.
732 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
733 yet been finalized. (reported by Levente Meszaros)
734 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
735 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
736 SBCL-specific optimize qualities.
738 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
739 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
740 an executable in the search path, and does so in the child
741 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
742 been removed; it can be found in the CVS history, for somebody who
743 needs that search behavior (see the manual).
744 * minor incompatible change: compiler policy re. weakening type
745 checks has changed: now type checks are weakened only if SAFETY < 2
747 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
748 unparsing of directory pathnames as files. Analogously,
749 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
750 filename to parse into a directory pathname.
751 * enhancement: implicit generic function creation now signals a
752 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
753 users can bind handlers for and muffle around calls to LOAD.
754 * enhancement: RUN-PROGRAM allows unicode arguments and environments
755 to be used (using the default stream external format), and allows
756 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
757 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
758 strings and vectors whose element-type or simplicity is not fully
759 known at compile-time.
760 * optimization: STRING-TRIM and related functions no longer allocate
761 a new string when no trimming needs to be performed. These functions
762 are also faster than before when the input string has been declared
764 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
765 * optimization: READ-LINE is significantly faster for files containing
767 * optimization: non-open coded uses of character comparison operators
768 (e.g. char=) no longer cons when called with more than one parameter
769 on platforms supporting dynamic-extent allocation.
770 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
771 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
772 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
774 * bug fix: some sequence functions elided bounds checking when
776 * bug fix: too liberal weakening of union-type checks when SPEED >
778 * bug fix: more bogus fixnum declarations in ROOM implementation
781 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
782 * new feature: MAKE-HASH-TABLE now experimentally accepts a
783 :SYNCHRONIZED argument, which makes the hash-table safe for
784 concurrent accesses (but not iteration.) See also:
785 SB-EXT:WITH-LOCKED-HASH-TABLE, and
786 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
787 * optimization: CONCATENATE on strings is an order of magnitude faster
788 in code compiled with (> SPEED SPACE).
789 * optimization: SUBSEQ is ~50% faster on lists.
790 * bug fix: bug 417 fixed -- source location reporting is now more robust.
791 * bug fix: SUBSEQ on a list will now correctly signal an error if if
792 END is smaller then START.
793 * bug fix: SB-PROFILE will no longer report extra consing for nested
794 calls to profiled functions.
795 * bug fix: ROOM implementation had bogus fixnum declarations which
796 could cause type-errors when calling ROOM on large images.
797 * bug fix: if file compilation is aborted, the partial fasl is now
798 deleted, and COMPILE-FILE returns NIL as the primary value.
799 * bug fix: number of thread safety issues relating to SBCL's internal
800 hash-table usage have been fixed.
801 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
802 be returned from its body when the values were being returned
803 using unknown-values return convection and the W-P-O was wrapped
804 inside an UNWIND-PROTECT.
805 * bug fix: sb-posix should now compile again under Windows, enabling
808 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
809 * incompatible change: hash-table accessor functions are no longer
810 automatically protected by locks. Concurrent accesses on the same hash-table
811 from multiple threads can give inconsistent results or even corrupt the
812 hash-table completely. Multi-threaded applications should do their own
813 locking at the correct granularity. In the current implementation it is
814 still safe to have multiple readers access the same table, but it's not
815 guaranteed that this property will be maintained in future releases.
816 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
817 and will signal an error at runtime.
818 * enhancement: SB-THREAD package now exports a semaphore interface.
819 * enhancement: CONS can now stack-allocate on x86 and
820 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
822 * enhancement: nested lists can now be stack allocated on
823 platforms providing stack allocation support.
824 * enhancement: dynamic-extent support has been extended to support
825 cases where there are multiple possible sources for the stack
827 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
828 if the mutex is uncontested on Linux.
829 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
830 as specified by the CLHS. (thanks to Tobias Rittweiler)
831 * bug fix: NaN comparison now works on x86-64.
832 * bug fix: CLOSE :ABORT T on a stream with pending output now
834 * bug fix: instances of non-standard metaclasses using standard
835 instance structure protocol sometimes missed the slot type checks
837 * bug fix: known functions can be inlined in high-debug code.
839 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
840 * minor incompatible change: the MSI installer on Windows no longer
841 associates .lisp and .fasl files with the installed SBCL.
842 * minor incompatible change: :UNIX is no longer present in *FEATURES*
843 on Windows. (thanks to Luis Oliviera)
844 * new feature: SB-CLTL2 contrib module now implements
845 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
846 * optimization: scavenging weak pointers is now more efficient,
847 requiring O(1) instead of O(N) per weak pointer to identify
848 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
849 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
850 method bodies using constant slot-names when the first argument is
851 a specializer parameter for the method.
852 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
853 names, when the class of the instance is a direct instance
854 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
855 as slow as the constant slot-name case.)
856 * optimization: member type construction is now O(N) instead
858 * optimization: UNION and NUNION are now O(N+M) for large
859 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
861 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
862 now more readable in environments like Slime which display it.
863 (thanks to Tobias C. Rittweiler)
864 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
865 was able to infer the correct argument type for the object on which
866 the CAS operation was being performed.
867 * bug fix: copy propagation interfered with parallel assignment
868 semantics in local calls. (reported by Paul Khuong)
869 * bug fix: the signed modular fixnum shift compiled to wrong code on
870 x86 and x86-64. (spotted by a slight modification to some of
873 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
874 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
875 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
876 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
878 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
879 and generic function now print the object identity for anonymous
880 instances. (thanks to Attila Lendvai)
881 * enhancement: as an extension to MOP, SBCL now supports SETF of
882 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
883 (thanks to Attila Lendvai)
884 * enhancement: sb-cover has an alternate annotation mode which puts
885 the form annotations at the car of the form, instead of annotating
886 it completely. The benefit of this mode is that it shows better
887 which forms were instrumented by the compiler.
888 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
889 by printer control variables. (reported by Dan Corkill)
890 * bug fix: system leaked memory when delayed output was performed by
891 the OS in smaller chunks then expected. (thanks to David Smith)
892 * bug fix: system leaked memory when file streams were not closed
894 * bug fix: large objects written to slow streams that were modified
895 after the write could end up with the modified state written to
896 the underlying file descriptor.
897 * bug fix: multiple threads operating in parallel on the same stream
898 could cause buffer-overflows.
899 * bug fix: source location information is stored correctly
900 (broken since 1.0.6). This bug would generally show up as the
901 Slime debugger highlighting the wrong form when the sldb-show-source
903 * bug fix: Branch forms are again annotated as branches in the sb-cover
905 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
906 on x86-64. (reported by Gregory Vanuxem)
907 * bug fix: EQUALP could return wrong results for structures with raw
908 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
909 word). (reported by Vjacheslav Fyodorov)
910 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
913 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
914 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
915 atomic compare-and-swap operations on threaded platforms.
916 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
917 allows assigning a global minimum value to optimization qualities
918 (overriding proclamations and declarations).
919 * enhancement: closed over variables can be stack-allocated on x86
921 * performance bug fix: GETHASH and (SETF GETHASH) are once again
923 * optimization: slot definition lookup is now O(1). This speeds up
924 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
925 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
926 * optimization: ASSOC and MEMBER can now be open-coded for all
927 combinations of keyword arguments when second argument is constant
928 and SPEED >= SPACE. In other cases a specialized version is
930 * bug fix: using obsoleted structure instances with TYPEP and
931 generic functions now signals a sensible error.
932 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
933 (reported by Kristoffer Kvello)
934 * bug fix: backtrace construction is now more careful when making
935 lisp-objects from pointers on the stack, to avoid creating bogus
936 objects that can be seen by the GC.
937 * bug fix: defaulting of values in contexts expecting more than 7
938 variables now works on x86-64. (reported by Christopher Laux)
939 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
941 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
942 as the property-list of a symbol.
943 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
944 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
945 situations requested, are once again file-compileable. (reported
948 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
949 * MOP improvement: support for user-defined subclasses of
950 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
951 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
952 the expansion of DEFMETHOD, is responsible for generating a form
953 which creates a list of specializers when evaluated. Additional
954 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
955 debugging and introspective support.
956 * minor incompatible change: the (unsupported) spinlock interface
957 has changed: free spinlock now has the value NIL, and a held spinlock
958 has the owning thread as its value.
959 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
960 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
962 * enhancement: name of a socket-stream is now "a socket" instead of
964 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
965 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
966 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
967 for generic functions. (Thanks to Tobias C. Rittweiler)
968 * optimization: bignum printing speed has been improved by 20-40%
969 (depending on the bignum size.)
970 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
972 * bug fix: the cache used by the CLOS to store precomputed effective
973 methods, slot offsets, and constant return values is now thread and
975 * bug fix: generic function dispatch function updating is now thread
976 and interrupt safe (in the sense that the known issues have been
978 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
979 * bug fix: interning EQL-specializers is now thread and interrupt safe.
980 * bug fix: asdf systems with dependencies to the SB-POSIX or
981 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
982 * bug fix: interrupt safety of applicable method computation has been
985 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
986 * new contrib: sb-cover, an experimental code coverage tool, is included
988 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
989 significantly faster.
990 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
991 produce more efficient code on x86-64 if the compiler can determine
992 that (+ INDEX <constant>) does not require a bounds check and FOO
993 has an element type at least 8 bits wide.
994 * enhancement: a new, experimental synchronous timeout facility is
995 provided. Refer to SB-SYS:WITH-DEADLINE for details.
996 * enhancement: when a symbol name conflict error arises, the
997 conflicting symbols are always printed with a package prefix.
998 (thanks to Kevin Reid)
999 * enhancement: stepping is now once again supported on the SPARC and
1000 MIPS platforms. (It is also now more likely to work on CheneyGC
1002 * enhancement: sb-sprof can now also track and report accurate call
1004 * bug fixes: the treatment of non-standard subclasses of
1005 SB-MOP:SPECIALIZER is more correct.
1006 * incompatible change: PURIFY no longer copies the data from the
1007 dynamic space into the static and read-only spaces on platforms
1008 that use the generational garbage collector
1009 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1011 * bug fix: GC race condition occasionally resulting in crashes with
1012 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1014 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1016 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1017 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1018 * bug fix: an asynchronous interrupt could previously leave the
1019 system running with GC inhibited.
1020 * bug fix: a DECLARE form evaluated at top-level now causes an error
1021 rather than silently (or verbosely) returning NIL.
1022 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1023 result in a error being signalled due to source form lookup errors.
1024 (reported by Peter Graves)
1026 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1027 * incompatible change: removed writer methods for host-ent-name,
1028 host-ent-addresses -- changing the values did not update the DNS
1030 * minor incompatible change: changed experimental JOIN-THREAD interface
1031 * documentation: the manual now lists reader and writer methods
1032 in class slot documentation sections. (thanks to Richard M Kreuter)
1033 * documentation: unwinding from asyncronous events has been
1034 documented as unsafe.
1035 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1036 in multithreaded application code.
1037 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1038 platforms. (thanks to James Anderson for the optimization hint)
1039 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1041 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1042 variants no longer cons.
1043 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1044 their NOT- variants no longer cons.
1045 * optimization: EQUAL hash tables no longer use SXHASH for objects
1046 of all data types, but instead use an EQL hash for types for which
1047 EQUAL is the same as EQL.
1048 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1049 are significantly faster.
1050 * optimization: new STRING-OUTPUT-STREAM implementation is much
1051 faster for large outputs and conses 30% less on average.
1052 * enhancement: XREF information is now collected for references made
1053 to global variables using SYMBOL-VALUE and a constant argument.
1054 * enhancement: SIGINT now causes a specific condition
1055 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1056 * bug fix: FILE-POSITION used to signal an error in some cases where
1057 ANSI requires it to return NIL.
1058 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1059 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1060 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1062 * bug fix: bad type declaration in the CLOS implementation has
1063 been fixed. (reported by James Anderson)
1064 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1065 (thanks to Lutz Euler)
1066 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1067 required by the CLHS. (reported by Samium Gromoff)
1068 * bug fix: dead unbound variable references now signal an error.
1069 (reported by Marco Monteiro)
1070 * bug fix: / with an unused value was being deleted in safe code.
1071 (thanks to Marco Monteiro and Kevin Reid)
1072 * bug fix: number of characters that can be written onto a single
1073 line in a file is unlimited.
1074 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1075 been fixed by inhibiting interrupts for when GC is disabled.
1076 * bug fix: some interrupt safety issues with GETHASH, (SETF
1077 GETHASH), CLRHASH and REMHASH have been fixed.
1078 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1079 specifier no longer causes infinite recursion.
1080 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1081 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1082 * bug fix: an &environment argument with the correct variable information
1083 is passed to macros that are expanded during byte compilation.
1084 (reported by Samium Gromoff)
1085 * bug fix: a logic error was causing the hash function for bignums to
1086 have excessive amounts of collisions. (reported by Faré Rideau)
1087 * bug fix: modifying the contents of an array could change the return
1088 value of SXHASH on that array, which is only allowed for strings
1089 and bit vectors. (bug introduced in 0.9.16)
1090 * improvement: the x86-64/darwin port now passes all tests (except
1091 for the debugger tests) but should still be considered
1092 experimental until this is fixed.
1093 * improvement: a style-warning is signaled for CASE (etc) clauses with
1094 duplicate keys. (thanks to Kevin Reid)
1095 * improvement: macos/x86 and macos/x86-64 now use mach exception
1096 handlers for dealing with illegal instructions (for trapping and
1097 error handling) and memory protection violations (for GC).
1099 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1100 * new platform: experimental support for x86-64/darwin (MacOS).
1101 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1102 and getnameinfo sockets functions are used instead of gethostbyaddr
1103 and gethostbyname, on platforms where the newer functions are available.
1104 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1106 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1107 don't print the startup banner, but behave as if --noinform was passed
1108 as a command line argument. (thanks to Kevin Reid)
1109 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1110 * optimization: code using alien values with undeclared types is much faster.
1111 * optimization: the compiler is now able to open code SEARCH in more cases.
1112 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1113 * bug fix: using standardized COMMON-LISP special variables as loop
1114 variables no longer signals bogus package lock violations. (reported
1116 * bug fix: declaring local loop variables to be of a range-limited type
1117 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1118 (reported by Andras Simon)
1119 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1120 bugs remain on x86-64.)
1121 * bug fix: the #= and ## reader macros now interact reasonably with
1122 funcallable instances.
1123 * bug fix: type-checks for function arguments were compiled using the
1124 compiler policy settings of the wrong lexical environment (in 1.0.2
1126 * bug fix: SHADOW accepts characters as string designators, as required
1127 by the spec (thanks to Eric Marsden)
1128 * bug fix: fixed GC safety issues when foreign functions are called with
1129 non-base strings as arguments
1130 * bug fix: more consistent error output for fatal-compiler-warnings, like
1132 * bug fix: functions with proper names were showing up as NIL in
1133 backtraces (reported by Edi Weitz, regression in 1.0.2)
1135 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1136 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1137 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1138 produce more efficient code on the x86 if the compiler can determine
1139 that (+ INDEX <constant>) does not require a bounds check and FOO
1140 has an element type at least 8 bits wide.
1141 * bug fix: references to undefined variables are handled the same way
1142 in toplevel forms as in the normal compiler
1143 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1145 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1146 (thanks to Jon Buller)
1147 * improvement: faster compilation times for complex functions
1148 * improvement: added readlink support to SB-POSIX (thanks to Richard
1151 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1152 * improvement: experimental support for mach exception handling on
1153 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1155 * improvement: support for GBK external format.
1156 (thanks to Chun Tian (binghe))
1157 * improvement: the debugger now displays variables that have been closed
1158 over, in code compiled with (DEBUG 2) or higher
1159 * improvement: support for executable cores on NetBSD (thanks to
1161 * new feature: added a RESTART-FRAME debugger command
1162 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1163 be used to provide an implementation for FILE-POSITION on Gray streams
1164 (thanks to Eric Marsden)
1165 * new feature: add syslog, openlog and closelog support to SB-POSIX
1166 (thanks to Richard Kreuter)
1167 * optimization: the function call overhead in code compiled with
1168 a high DEBUG optimization setting is significantly
1169 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1170 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1171 (thanks to Tony Martinez)
1172 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1173 evaluated once (reported by Kevin Reid)
1174 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1175 works again (thanks to Kilian Sprotte)
1176 * bug fix: an error is signaled for tagbodies with duplicate tags
1177 (thanks to Stephen Wilson)
1178 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1179 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1180 stack frames from alien callbacks.
1181 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1182 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1183 65k pages (thanks to David Woodhouse)
1184 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1186 changes in sbcl-1.0.1 relative to sbcl-1.0:
1187 * new platform: FreeBSD/x86-64, including support for threading.
1188 * new feature: the compiler stores cross-referencing information
1189 about function calls (who-calls), macroexpansion (who-macroexpands)
1190 and special variables (who-binds, who-sets, who-references) for code
1191 compiled with (< SPACE 3). This information is available through the
1192 sb-introspect contrib.
1193 * new feature: users may subclass SEQUENCE, and have instances of
1194 these classes interoperate with standard Common Lisp functions if
1195 a number of methods are defined. (This feature is experimental
1196 and the interface subject to change based on feedback from SBCL
1197 users and the general community)
1198 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1199 x86/x86-64, rather than the previous fixed depth of 8
1200 * improvement: another pthread back-end of mutex "pthread-futex".
1201 * bug fix: non-ascii command-line arguments are processed correctly
1202 (thanks to Yaroslav Kavenchuk)
1203 * bug fix: non-required arguments were not passed correctly when a method
1204 defined using DEFMETHOD was called from a mop-generated method using
1205 CALL-NEXT-METHOD (reported by Pascal Costanza)
1206 * bug fix: recursion is now permitted in accessors through
1207 SLOT-UNBOUND. (reported by Pascal Costanza)
1208 * bug fix: an error was signaled at startup if the HOME environment
1209 variable was defined, but had an empty value (reported by Peter Van Eynde)
1210 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1211 signal a PROGRAM-ERROR, not a BUG.
1212 * bug fix: SB-POSIX:READDIR works when built with large file support.
1213 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1215 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1216 for better automatic indentation support. (thanks to Matt Pillsbury)
1217 * optimization: loading generic functions no longer takes O(n^2) time,
1218 proportional to the amount of methods in the generic function
1219 (reported by Todd Sabin and Jeremy Brown)
1220 * optimization: the FIND and POSITION family of sequence functions
1221 are significantly faster on arrays whose element types have been
1223 * improvements to the Windows port:
1224 ** Intermittent heap corruption problems have been fixed. (thanks
1225 to Alastair Bridgewater)
1226 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1228 ** Lisp is able to unwind foreign exception frames from alien
1229 callbacks. (thanks to Alastair Bridgewater)
1231 changes in sbcl-1.0 relative to sbcl-0.9.18:
1232 * improvement: experimental support for threading on FreeBSD/x86.
1233 (thanks to NIIMI Satoshi)
1234 * improvement: runtime option --dynamic-space-size can be used
1235 to set the size of the dynamic space reserved on startup.
1236 * improvement: floating point modes in effect are now saved in
1237 core, and restored on startup.
1238 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1239 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1240 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1241 threads are not running after *SAVE-HOOKS* have run.
1242 * improvement: writes to CLOS instance slots are type-checked in code
1243 compiled with (SAFETY 3)
1244 * improvement: floating-point exception handling on FreeBSD (thanks to
1246 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1247 (thanks to Zach Beane)
1248 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1250 * improvement: added support for the Shift-JIS external format.
1251 (contributed by NIIMI Satoshi)
1252 * improvement: callbacks are supported on Linux/PPC. (thanks to
1254 * bug fix: compiler bug triggered by a (non-standard) VALUES
1255 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1256 * bug fix: file compiler no longer confuses validated and already
1257 dumped structurres. (reported by Kaersten Poeck)
1258 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1259 fill-pointer signals a type-error as required. (thanks to
1261 * bug fix: disassemly of funcallable instances works.
1262 * bug fix: single stepping on PPC.
1263 * bug fix: fix thread-safety problems in the type system (generally
1264 manifesting as nonsensical errors like "STRING is a bad type specifier
1265 for sequences" or "The value 1 is not of type FIXNUM")
1266 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1267 (reported by Josip Gracin)
1268 * bug fix: an error is signaled for attempts to displace arrays with
1269 incompatible element types (thanks to Mario Mommer)
1270 * bug fix: more correct handling of wide characters in debug info
1271 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1272 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1273 and don't cause extra consing
1274 * optimization: MAP and MAP-INTO are significantly faster on vectors
1275 whose elements types have been declared.
1276 * Improvements to SB-SPROF:
1277 ** Support for allocation profiling
1278 ** Reduced profiling overhead, especially for long profiling runs
1279 * Improvements to the Windows port:
1280 ** floating point exceptions are now reported correctly.
1281 ** stack exhaustion detection works partially.
1282 ** more accurate GET-INTERNAL-REAL-TIME.
1283 ** better RUN-PROGRAM behaviour in case of errors in the child
1285 ** PROBE-FILE now simplifies pathnames correctly.
1286 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1287 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1288 1st 1970 (although time timezone data will be unreliable).
1289 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1291 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1292 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1293 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1295 * bug fix: two potential GC deadlocks affecting threaded builds.
1296 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1297 returns T (reported by Anton Kazennikov)
1298 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1299 with non-variable places
1300 * bug fix: remove a race condition in the setting of
1301 funcallable-instance functions, this should make threaded CLOS
1302 code more stable against memory faults.
1303 * bug fix: corruption of specials when unbinding is interrupted by an
1304 asynchronous unwind (reported by Hannu Koivisto)
1305 * improvement: the debugger will now also display local variables that
1306 are only used once, for code compiled with a DEBUG optimization quality
1309 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1310 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1311 * incompatible change: External-format support for FFI calls. The
1312 SB-ALIEN:C-STRING no longer implies an ASCII
1313 external-format. Instead the string is subject to external-format
1314 conversion. Additionally return values of type SB-ALIEN:C-STRING
1315 are by default of type (SIMPLE-ARRAY CHARACTER), not
1316 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1317 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1318 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1319 * incompatible change: SB-EXT package no longer contains the
1320 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1321 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1323 * incompatible change: the single-stepper is no longer available
1324 on Alpha, Mips and Sparc platforms.
1325 * minor incompatible change: the direct superclasses of
1326 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1327 not (STANDARD-OBJECT FUNCTION). This makes the
1328 class-precedence-lists of GENERIC-FUNCTION and
1329 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1331 * minor incompatible change: the default stream external format on
1332 non-unicode SBCL is no longer detected from the locale, but is always
1334 * new feature: Add a version of evaluator that uses an interpreter instead
1335 of the compiler. EVAL still uses the compiler by default, to switch it
1336 to use the interpreter, set the value of the variable
1337 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1338 * minor incompatible change: the single-stepper REPL has been merged
1339 with the normal debugger (see the "Stepping" heading of the debugger help
1340 for more details). The debugger command STEP will no longer switch
1341 to the single-stepper REPL.
1342 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1343 for a type now works.
1344 * bug fix: loading of default sysinit file works. (thanks to Leonid
1346 * bug fix: better detection of circularities in the file-compiler.
1347 (reported by Marco Monteiro)
1348 * bug fix: the CL pathname functions now work with files that have
1349 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1350 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1351 systems with Unix98 pty semantics.
1352 * bug fix: ASDF-INSTALL will now work with bsd tar.
1353 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1355 * bug fix: timers expiring in dead threads no longer cause a
1356 type-error (reported by Paul "Nonny Mouse").
1357 * bug fix: thanks to more lightweight single-stepper instrumentation,
1358 code compiled with (DEBUG 3) will compile and execute significantly faster,
1359 and will have more accurate type-inferencing than before
1360 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1361 whose bindings are modified
1362 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1363 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1364 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1365 CL:SOFTWARE-VERSION with proper version
1367 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1368 * feature: implemented the READER-METHOD-CLASS and
1369 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1370 as specified by AMOP.
1371 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1373 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1374 (thanks to Lutz Euler)
1375 * optimization: hashing of general arrays and vectors has been
1376 improved. (reported by Any Fingerhut)
1377 * enhancement: SB-INTROSPECT is now able to find definitions of
1378 profiled functions. (thanks to Troels Henriksen)
1379 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1380 as well, allowing compiler-macros for SETF-functions to expand.
1381 * enhancement: step-instrumentation no longer wraps known
1382 single-value functions with multiple-value context, allowing
1383 better type inference.
1384 * fixed bug #337: use of MAKE-METHOD in method combination now works
1385 even in the presence of user-defined method classes. (reported by
1386 Bruno Haible and Pascal Costanza)
1387 * fixed bug #339(c): if there are applicable methods not part of any
1388 long-form method-combination group, call INVALID-METHOD-ERROR.
1389 (reported by Bruno Haible)
1390 * fixed bug #361: the :FUNCTION initarg in the protocol for
1391 initialization of methods can now be used to override
1392 internally-produced optimized functions. (reported by Bruno
1394 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1395 system-provided lambda expression no longer cause warnings about
1396 unbound #:|pv-table| symbols.
1397 * bug fix: improved the handling of type declarations and the
1398 detection of violations for keyword arguments with non-constant
1400 * bug fix: potentially erronous calls to PATHNAME and
1401 MERGE-PATHNAMES were being flushed in some cases.
1402 (reported by Richard Kreuter)
1403 * bug fix: compiled calls to TYPEP were mishandling obsolete
1404 instances. (reported by James Bielman and Attila Lendvai)
1405 * bug fix: format strings with ~> without matching ~< no longer
1406 trigger an AVER, but signal an understandable error instead.
1407 (reported by Antonio Martinez)
1408 * bug fix: specifying an output-file without a pathname-type for
1409 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1410 of input-file instead of "fasl". (reported by Robert Dodier)
1411 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1412 (reported by James Y Knight).
1413 * bug fix: compiler-macros-function did not consider the environment
1414 argument for shadowing by local functions.
1415 * bug fix: compiler-macros expansion was inhibited by local INLINE
1417 * bug fix: inline expansions of known functions were subject to
1418 step-instrumentation in high debug policies, leading to problems
1419 with type-inference.
1420 * bug fix: compiler failed to differentiate between different CONS
1421 types in some cases.
1422 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1423 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1424 * bug fix: #368: incorrect use of expressed vs. upgraded array
1426 * bug fix: #306a: more precise unions of array types.
1427 * thread-safety improvements:
1428 ** CONDITION-WAIT could return early on Linux, if the thread was
1429 interrupted and subsequently continued with SIGCONT.
1430 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1432 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1433 * added support for the ucs-2 external format. (contributed by Ivan
1435 * minor incompatible change: pretty printing of objects of type
1436 (cons symbol) is, in the default pprint-dispatch-table, now
1437 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1439 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1440 called later in a class's lifetime, possibly as late as when the
1441 first instance of the class is created. Previously,
1442 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1443 class became finalizeable.
1444 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1445 for multibyte external-format streams. (thanks to "vbzoli")
1446 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1447 with :ALLOCATION :CLASS inherited from superclasses of the
1449 * fixed bug: anonymous classes can now be created using the :NAME
1450 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1451 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1452 * fixed bug: core-files saved with :EXECUTABLE T can again be
1453 executed when SBCL_HOME isn't set. (reported by James Knight)
1454 * fixed bug: toplevel LOCALLY forms with declarations could
1455 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1456 * fixed bug: printing from several different threads using different
1457 values of *print-case* could cause invalid output, due to
1458 some internal special variables of the printer not being bound
1459 thread-locally (reported by Max Mikhanosha)
1460 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1461 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1462 (reported by Pascal Costanza)
1463 * fixed bug: FINALIZE-INHERITANCE is called from
1464 REINITIALIZE-INSTANCE on classes when the class has previously
1465 been finalized, as required by AMOP.
1466 * minor code generation optimizations:
1467 ** better register allocation in CLOS dispatching functions
1468 ** overflow detection when coercing signed bytes to fixnums on x86-64
1469 ** is now implemented with one IMUL instruction instead of three shifts
1470 ** more efficient bit-vector access on x86 and x86-64
1471 ** more efficient access to raw structure slots on x86 and x86-64
1472 * fixed some bugs revealed by Paul Dietz' test suite:
1473 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1474 return its argument.
1476 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1477 * feature: thread support on Solaris/x86, and experimental thread support
1479 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1481 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1482 default method for SLOT-UNBOUND.
1483 * minor incompatible change: prevent the user from specializing the
1484 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1485 somewhat counter to the intent of the protocol, I (CSR) think, and
1486 additionally it just doesn't work in SBCL as currently
1487 implemented, thanks to optimizations (that are always valid for
1488 the other three SLOT-VALUEish functions, but not for the setter).
1489 * minor incompatible change: the :SB-LDB feature is now enabled by
1490 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1491 the low-level debugger.
1492 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1493 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1494 down to an SB-SYS:FD-STREAM, allowing direct communication in
1495 more cases. Temporary files and pipes are still used as a fallback
1497 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1498 on the non-reentrant C functions localtime(3) and gmtime(3).
1499 * bug fix: global optimization policy was not visible in LOCALLY and
1501 * bug fix: class objects can be used as specializers in methods.
1502 (reported by Pascal Costanza)
1503 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1504 with a type error. (reported by blitz_ on #lisp)
1505 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1506 failed with a type error. (reported by Pascal Bourguignon)
1507 * bug fix: merging pathnames against defaults with :DIRECTORY
1508 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1509 (reported by James Y Knight)
1510 * bug fix: saving large (>2GB) cores on x86-64 now works
1511 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1512 constant index and a (simple-array (signed-byte 32)) array
1513 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1514 error (patch by Robert J. Macomber)
1515 * feature: TIME now displays the amount of run-time spent in GC
1516 * bug fix: The debugger now does a better job of respecting
1517 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1518 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1519 workaround for bug 403.)
1520 * bug fix: floating point exception handling now works on FreeBSD
1521 (thanks to NIIMI Satoshi)
1522 * fixed some bugs revealed by Paul Dietz' test suite:
1523 ** MISC.641: LET-conversion were not supposed to work in late
1525 * improvements to the Win32/x86 port:
1526 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1527 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1529 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1530 * new feature: source path information is generated for macro-expansion
1531 errors for use in IDE's like Slime (thanks to Helmut Eller)
1532 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1533 * bug fix: compiler does not loop forever on an invalid type in
1535 * improvement: compilation of most CLOS applications is significantly
1537 * optimization: added a limited bytecode compiler for simple toplevel
1538 forms, speeding up compilation and FASL loading
1539 * bug fix: the statistical profiler now properly distinguishes anonymous
1542 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1543 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1544 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1545 into subclasses of the finalized class. Now user calls to
1546 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1547 system return before any subclasses are finalized.
1548 * minor incompatible change: The reader no longer ignores errors
1549 regarding non-existent packages in #+ and #- feature tests.
1550 * new feature: command line options --no-sysinit, --no-userinit to
1551 inhibit loading the corresponding init files
1552 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1553 for sending data through UDP sockets (thanks to François-René Rideau)
1554 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1555 error is signalled instead (thanks to François-René Rideau)
1556 * minor incompatible change: Error signalling behaviour of lexical
1557 operations violating package locks has changed slightly. Refer to
1558 documentation on package locks for details.
1559 * enhancement: EVAL can process IF-expressions without resorting to the
1561 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1562 constant-folded properly due to missing out-of-line functions.
1563 (reported by Mika Pihlajamäki)
1564 * bug fix: LISTEN sometimes returned T even in cases where no data was
1565 immediately available from the stream
1566 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1567 were reversed. (reported by Levente Mészáros)
1568 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1569 when given a vector displaced to an adjustable array. (reported
1571 * bug fix: derivation of float boundaries from numbers outside the
1572 appropriate float range (reported by John Wiseman)
1573 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1575 * bug fix: precomputing cache entries for generic functions with
1576 some subclasses of specializers as yet invalid does not attempt to
1577 fill a cache line with a negative offset. (reported by Levente
1579 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1580 allow condition class objects as arguments to DOCUMENTATION and
1581 (SETF DOCUMENTATION); only find and set documentation for
1582 structure names for the STRUCTURE doc-type. (suggested by Gary
1584 * improvements to the Win32/x86 port:
1585 ** (user-homedir-pathname) and default initialization file
1586 locations now know about the user's "Documents and Settings"
1587 directory (thanks to Yaroslav Kavenchuk)
1588 ** run-program is implemented (thanks to Mike Thomas)
1589 ** sockets support (thanks to Timothy Ritchey)
1590 ** better backtrace support (thanks to Alastair Bridgewater)
1591 ** sb-grovel supported
1592 ** asdf-install and sb-posix work somewhat
1593 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1594 * improvements to the Solaris/x86 port:
1595 ** works on Solaris 11/Solaris Express
1596 ** floating-point exception handling support
1597 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1598 * fixed some bugs revealed by Paul Dietz' test suite:
1599 ** REMOVE-METHOD returns its generic function argument even when
1600 the method is not one of the generic functions' methods.
1601 ** objects declared as MEMBER types can be admissible arguments to
1602 structure accessors.
1603 ** printing characters should simply be printed by the FORMAT ~:C
1605 ** compiler failure when compiling functions with hairy constant
1606 defaults for optional parameters.
1607 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1608 function, which is already optimized.
1610 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1611 * new platform: experimental support for SBCL x86/Darwin, including
1612 MacOS X 10.4.5 on Intel.
1613 * new feature: Unicode character names are now known to the system
1614 (through CHAR-NAME and NAME-CHAR).
1615 * new feature: the filesystem location of SBCL's core file is
1616 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1617 * minor incompatible change: the contrib modules SB-POSIX and
1618 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1619 this change is to make it easier to distribute
1620 location-independent binaries.
1621 * bug fix: as implied by AMOP, standardized classes no longer have
1622 slots named by external symbols of public packages. (reported by
1624 * optimization: calling functions via constant symbols -- as in
1625 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1626 via the function object as in (FUNCALL #'FOO).
1627 * optimization: on x86 and x86-64, the calling convention for the
1628 case of dealing with an unknown number of values has been altered
1629 to be friendlier to the prediction heuristics implemented,
1630 particularly with reference to CALL and RET pairing. (thanks to
1631 Alastair Bridgewater)
1632 * optimization: on x86, the code for access to thread-local symbol
1633 values and binding/unbinding of thread-local symbols is smaller.
1634 (thanks to Alastair Bridgewater)
1635 * enhancement: CONSTANTP is now able to determine constantness of
1636 more complex forms, including calls to constant-foldable standardized
1637 functions and some special forms beyond QUOTE.
1638 * fixed bug: occasional GC crashes on Solaris/x86
1639 * optimization: x86-64 supports stack allocation of results of simple
1640 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1641 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1642 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1643 (thanks to James Knight)
1644 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1645 by the standard (thanks to Stephen Compall)
1647 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1648 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1649 be used for bundling the runtime and the core file into one
1650 executable binary. This feature is not currently supported on all SBCL
1651 platforms. (thanks to James Bielman and NIIMI Satoshi)
1652 * new feature: a generational or ephemeral garbage collector is now
1653 the default on the PowerPC platform (both Linux and Darwin). The
1654 old Cheney (stop and copy) collector is a build-time option.
1655 (thanks to Cyrus Harmon, after Raymond Toy)
1656 * minor incompatible change: the method by which SBCL finds its
1657 contributed modules has changed; it no longer relies on symbolic
1658 links from an $SBCL_HOME/systems directory, but searches directly
1659 in the subdirectories of $SBCL_HOME.
1660 * enhancement: the dynamic heap size on the Linux/PPC platform is
1661 markedly larger, even using the older Cheney garbage collector.
1662 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1663 certain complicated string types. (reported by Gary King)
1664 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1665 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1666 * fixed bug: DOCUMENTATION on structures no longer signals an
1667 error if no structure type of the right name exists. (reported by
1669 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1670 applicable non-standard primary or :AROUND method on
1671 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1672 no longer cause unbound variable errors. (reported by Kevin Reid)
1673 * fixed bug: metacircle resolution in cases where methods have slots
1674 added before the slots from STANDARD-METHOD. (reported by Jean
1676 * fixed bug: the Power PC assembly code for calling into lisp
1677 sometimes computed its return address wrongly (depending on the
1678 15th bit of the address, fixed at link time). This used to
1679 manifest itself in a segmentation violation while building PCL.
1680 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1681 many others over the years)
1682 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1683 the stack pointer (treated as a signed integer) is negative.
1684 (thanks to Peter van Eynde)
1686 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1687 * new platform: experimental support for the Windows operating
1688 system has been added. (thanks to Alastair Bridgewater)
1689 * fixed several bugs in and robustified the PPC FFI (including
1690 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1691 * bug fix: allow non-simple string symbol names (reported by Paul
1693 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1695 * bug fix: saving a core corrupted callbacks on x86/x86-64
1696 * bug fix: closed a loophole in metacircularity detection and
1697 grounding in the PCL implementation of CLOS.
1698 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1699 (reported by tomppa on #lisp)
1700 * bug fix: clear the direction flag on Lisp -> C transitions, as
1701 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1702 (reported by Andrej Grozin and Hendrik Maryns)
1703 * optimization: major improvements to GC efficiency on GENCGC platforms
1704 * optimization: faster implementation of EQUAL
1705 * optimization: emit more efficient opcodes for some common
1706 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1707 * optimization: several other minor code-generation improvements on x86-64
1708 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1710 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1711 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1712 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1713 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1714 by ANSI as a generic function, and for consistency (SETF
1715 GENERIC-FUNCTION-NAME) is treated likewise.
1716 * fixed bug #233.b: make constraint propagation notice when a variable
1717 value is changed after it is referenced but before it is used
1718 * fixed bug #296: no more arbitrary behaviour from filenames with
1719 odd characters as --load arguments. (reported by Adam Warner)
1720 * fixed bug #390: :CHARACTER-SET pathname components now work as
1721 expected. (reported by Tim Daly Jr)
1722 * fixed bug #391: complicated :TYPE intersections in slot
1723 definitions no longer cause an error in PCL internals.
1724 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1725 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1726 returning the number of octets which would be written to the
1727 file-stream. (thanks to Robert J. Macomber)
1728 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1729 arguments to the internal stream functions. (thanks to David
1731 * bug fix: stack exhaustion is now handled on the x86/SunOS
1732 platform. (thanks to Daisuke Homma)
1733 * bug fix: more accurate ROOM results on GENCGC platforms
1734 * optimization: improved type inference for arithmetic-for
1735 index variables in LOOP
1736 * optimization: faster floating-point SQRT on x86-64
1737 * fixed some bugs revealed by Paul Dietz' test suite:
1738 ** DOCUMENTATION returns NIL instead of "" for method combinations
1739 that don't have a docstring
1741 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1742 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1743 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1744 therefore are not customizeable by user code (as seems to be at
1745 least permitted and maybe required by AMOP). As a consolation,
1746 however, the SBCL implementation of these functions now calls
1747 REINITIALIZE-INSTANCE as specified by AMOP.
1748 * bug fix: slot-definition documentation is propagated as per ANSI
1749 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1750 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1751 argument, as do eslotd initialization methods. (from Pascal
1752 Costanza's "Closer" project)
1753 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1754 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1756 * bug fix: it is now possible to have more than one subclass of
1757 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1758 (reported by Bruno Haible, Pascal Costanza and others)
1759 * bug fix: the dependent update protocol now works for generic
1760 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1761 and Pascal Costanza)
1762 * bug fix: condition-class instances corresponding to
1763 DEFINE-CONDITION forms are now created eagerly. (reported by
1764 Kalle Olavi Niemitalo on comp.lang.lisp)
1765 * bug fix: floating point printing is more accurate in some
1766 circumstances. (thanks to Simon Alexander)
1767 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1768 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1769 * bug fix: callbacks on OS X now preserve stack-alignment.
1770 (thanks to Cyrus Harmon)
1771 * enhancement: the x86-64 disassembler is much better at
1772 disassembling SSE instructions. (thanks to Lutz Euler)
1773 * enhancement: CHECK-TYPE on a variable now allows type-inference
1774 (thanks to Vincent Arkesteijn)
1775 * optimization: improved performance of EUC-JP external format.
1776 (thanks to NIIMI Satoshi)
1777 * optimization: performance improvements to IO on file streams of
1778 :ELEMENT-TYPE CHARACTER
1779 * optimization: much faster memory allocation on x86-64
1780 * optimization: faster garbage collections (latency and throughput)
1782 * optimization: faster bignum subtraction and division on x86 and x86-64
1783 (thanks to Lutz Euler)
1784 * optimization: more accurate type-inference for loops that use a
1785 floating point index variable or a negative step.
1787 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1788 * bug fix: add a workaround to SBCL looping infinitely at startup on
1789 Linux kernels with apparently buggy implementations of personality().
1790 (thanks to Svein Ove Aas)
1791 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1792 (thanks to David Lichteblau)
1793 * bug fix: local bindings shadow global symbol macros for
1794 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1795 * optimization: non-open coded uses of numeric comparison operators
1796 (e.g. >) no longer cons when called with more than one parameter
1797 on platforms supporting dynamic-extent allocation.
1798 * enhancement: saving cores with foreign code loaded is now supported
1799 on MIPS/Linux in addition to the previously supported platforms.
1800 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1801 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1802 * bug fix: division by zero in sb-sprof when no samples were collected
1803 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1804 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1805 (thanks to Alexander Kjeldaas)
1806 * new feature: ignoring the return values of destructive functions
1807 like NREVERSE signals a compile-time style-warning.
1808 (thanks to Kevin Reid)
1809 * new feature: the alignment of alien structure fields can be
1810 explicitly specified. (thanks to Cyrus Harmon)
1811 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1812 and dump core on SIGQUIT
1814 ** incompatible change: threads do not inherit values of specials
1815 from their parents (see manual)
1816 ** bug fix: threads stacks belonging to dead threads are freed by the
1817 next exiting thread, no need to gc to collect thread stacks anymore
1818 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1819 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1820 ** bug fix: dynamic variable and thread start related gc lossage
1821 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1823 * fixed some bugs revealed by Paul Dietz' test suite:
1824 ** SUBTYPEP is slightly more accurate on heinously complicated
1825 CONS types where some of the members have uncertain (in the
1826 NIL, NIL sense) type relationships to each other.
1828 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1829 no longer purified unless :PURIFY T is explicitly specified.
1830 ** Non-purified cores are significantly smaller than before
1832 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1833 * new feature: timers based on Zach Beane's excellent timer package
1834 * added support for the following external formats: koi8-u,
1835 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1836 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1837 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1838 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1839 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1840 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1841 * incompatible change: a threaded SBCL will no longer revert to
1842 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1843 * bug fix: interrupts are disabled until startup is complete; no
1844 more sigsegvs when receiving a signal to soon
1845 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1847 * bug fix: add a workaround for the memory randomization features in
1848 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1849 workaround will only be in effect on systems with the proc filesystem
1851 * bug fix: printing objects of type HASH-TABLE signals a
1852 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1854 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1855 have been running for over 50 days. (reported by Gilbert Baumann)
1856 * bug fix: the logic for getting names of functions gets less
1857 confused when confronded with alternate-metaclass
1858 funcallable-instances. (reported by Cyrus Harmon)
1859 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1860 consistent, even on internal alternate-metaclass objects.
1861 * bug fix: flush closure information collected by physical
1862 environment analysis prepass before the main pass. (bug reported
1864 * bug fix: compiler pack phase does not modify a hashtable, which is
1865 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1866 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1867 may be expanded. (reported by Alexander <malishev> on c.l.l)
1868 * bug fix: no more style-warnings when compiling code using LAST
1869 under high-SPEED low-SPACE settings. (reported by David Wallin
1871 * fixed some incompatibilities between SBCL's MOP and the MOP
1873 ** the METAOBJECT class is now implemented;
1874 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1875 STANDARD-OBJECT, as required;
1876 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1877 now compatible (as required by VALIDATE-SUPERCLASS); there
1878 remains a consistency requirement over the presence or absence
1879 of the FUNCTION class in the superclass list of finalized
1880 classes; see the manual for more details;
1881 ** the :AROUND method for COMPUTE-SLOTS on
1882 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1883 requested slot ordering.
1885 ** bug fix: parent thread now can be gc'ed even with a live
1887 ** bug fix: binding a special with PROGV to no value is not
1888 the same as that symbol not having been bound (thanks to
1890 ** bug fix: binding specials is thread safe (thanks to
1892 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1893 and SB-SPROF do not die with 'no handler for signal XX in
1894 interrupt_handle_now(..)' anymore
1895 ** bug fix: WITH-TIMEOUT works with multiple running threads
1896 * fixed some bugs revealed by Paul Dietz' test suite:
1897 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1898 the :method-class keyword argument.
1900 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1901 * new port: the Solaris operating system on x86 processors is now
1902 mostly supported, though some rough edges in the environment
1903 remain. (thanks to Daisuke Homma)
1904 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1905 space for its heap. (thanks to Thiemo Seufer)
1906 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1907 closures. (thanks to Thiemo Seufer)
1908 * minor incompatible change: eof selects abort in the debugger.
1909 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1910 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1912 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1913 deprecated, and will go away in a future revision of SBCL.
1914 * minor incompatible change: GC-ON and GC-OFF are no longer
1915 implemented with a counter, it does not matter how many times gc
1916 is switched on or off
1917 * bug fix: discriminating functions for generic function classes
1918 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1919 make invalid assumptions about method precedence order. (reported
1921 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1922 platforms. (thanks to Thiemo Seufer)
1923 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1924 * bug fix: correct pathname printing with printer escaping is on.
1925 (thanks to Kevin Reid)
1926 * bug fix: complex VOP definitions in "user-space" no longer trigger
1927 package locks. (reported by Zach Beane)
1928 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1929 for funcallable-instance functions, and is no different from
1931 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1932 characters in the current readtable. (reported by Nicholas Neuss)
1933 * bug fix: SUBTYPEP on various CONS types returns more a more
1934 accurate acknowledgment of its certainty.
1935 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1936 lists in some cases. This partially fixes bug 384.
1937 * flush all standard streams before prompting in the REPL and the
1939 * bug fix: signal handling and triggering gc do not conflict
1940 directly anymore, in particular a high frequency sb-sprof does
1941 not prevent gc from running
1942 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1943 approximation for timezone and DST information between the
1944 universal time epoch and the smallest negative 32-bit time_t.
1945 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1946 year 1899 so long as the encoded time is non-negative.
1947 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1948 the correct answer for non-constant rotate amounts when performing
1949 an inline 32-bit rotation.
1951 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1952 there is only one thread in the session
1953 ** bug fix: memory leak for streams created in one thread and
1954 written to in another
1955 ** bug fix: lockup when compiled with gcc4
1956 ** bug fix: race that allows the gc to be triggered when gc is
1958 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1959 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1961 ** bug fix: finished threads are gc'ed properly
1962 * fixed some bugs revealed by Paul Dietz' test suite:
1963 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1964 has arguments with a different set of applicable methods from
1965 the orignal arguments.
1966 ** The type error thrown by MAP now has a correct expected-type
1968 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1969 name a compiled function.
1970 ** Three MISC tests where a large bignum was improperly coerced to
1971 a float that couldn't represent that bignum during type
1972 derivation were fixed.
1973 ** SUBTYPEP can now handle types involving the negation of a
1974 list-form FUNCTION type.
1975 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1976 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1977 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1979 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1980 * New feature: Experimental support for bivalent streams: streams
1981 opened with :element-type :default now allow character and binary
1982 (unsigned-byte 8) I/O
1983 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1984 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1986 * bug fix: no more highly sporadic "couldn't check whether ~S is
1987 readable" when reading a stream and an interrupt hits in the middle
1988 of a select system call
1989 * compiler better recognizes complex arrays (reported by Eduardo
1991 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1992 for variables on SBCL built with linkage-tables. (reported by Luis
1994 * various error reporting improvements.
1995 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1996 (Thanks to Thiemo Seufer)
1997 * bug fix: nested reader invokations work correctly
1998 * bug fix: it is possible to have simultaneous references to foreign
1999 code and foreign data with the same name.
2001 ** added x86-64 support
2002 ** incompatible change: the threading api now works with thread
2003 objects instead of thread ids
2004 ** bug fix: threads are protected from signals and interruption when
2005 starting up or going down
2006 ** bug fix: a race where an exiting thread could lose its stack to gc
2007 ** bug fix: don't halt on infinite error in threads if possible
2008 ** fixed numerous gc deadlocks introduced in the pthread merge
2009 ** bug fix: fixed thread safety issues in read and print
2010 ** bug fix: debugger doesn't hang on session lock if interrupted at
2011 an inappropriate moment
2012 ** bug fix: run-program is now thread safe(r)
2013 ** bug fix: inner with-recursive-lock no longer releases the mutex
2014 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2015 * fixed some bugs revealed by Paul Dietz' test suite:
2016 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2017 EXPECTED-TYPE slots filled.
2018 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2020 ** MAKE-CONDITION accepts classes as type-designators.
2021 ** COMPILE may never return NIL.
2022 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2023 range before calling Unix time functions
2025 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2026 * numerous signal handling fixes to increase stability
2027 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2028 * minor incompatible change: we now correctly canonize default
2029 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2030 as per the MOP, rather than the historical (INITARG INITFUNCTION
2031 INITFORM). (reported by Bruno Haible)
2032 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2033 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2034 for more information.
2035 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2036 pathname is a directory pathname.
2037 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2038 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2040 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2041 :METACLASS argument in addition to a class name. (reported by
2042 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2043 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2044 (reported by Bruno Haible; patch from Gerd Moellmann)
2045 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2047 * bug fix: more cleanups to the floating point exception handling on
2048 x86-64 (thanks to James Knight)
2049 * bug fix: the compiler does not try to constant fold calls of
2050 COERCE and BIT-* functions when they return freshly constructed
2051 objects. (reported by Nikodemus Siivola and Paul Dietz)
2052 * optimization: improved the MIPS versions of generic (in the
2053 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2054 * optimization: direct conversion of (unsigned-byte 32) to floats on
2055 the PowerPC platform.
2056 * optimization: structure instances with raw slots now use less
2057 memory, and probably show better memory locality. (thanks to
2059 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2060 are treated as requests for stack allocation on the x86-64,
2061 Alpha-32, PPC and SPARC platforms.
2062 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2063 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2064 (thanks to Tony Martinez)
2066 ** gcing a dead thread can no longer lead to lockups
2067 ** threads block signals until they are set up properly
2068 ** errno is no longer shared by threads
2069 ** interrupt-thread restores the eflags register on x86
2070 ** fixed some lockups due to gc/thread interaction
2071 * fixed some bugs revealed by Paul Dietz' test suite:
2072 ** invalid dotted lists no longer raise a read error when
2073 *READ-SUPPRESS* is T
2074 ** signal an error if a symbol that names a declaration is used
2075 as the name of a type, or vice versa
2076 ** allow using the (declare (typespec var*)) abbreviation for
2077 (declare (type typespec var*)) with all type specifiers
2078 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2079 ** always return NIL from PPRINT-POP when OBJECT is NIL
2080 ** don't signal errors when pretty-printing malformed LABELS,
2081 FLET or MACROLET forms
2082 ** declarations in a DOLIST body are also in scope for the
2084 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2086 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2089 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2090 * fixed cross-compiler leakages that prevented building a 32-bit
2091 target with a 64-bit host compiler.
2092 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2093 opened with :IF-EXISTS :OVERWRITE.
2094 * fixed bug 281: error for an invalid qualifier in a short-form method
2095 combination method is not signalled until the faulty method is called.
2096 * bug fix: iteration variable type inferrer failed to deal with open
2097 intervals. (reported by Alan Shields)
2098 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2099 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2100 or more runtime options were provided to the sbcl binary.
2101 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2102 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2103 * optimization: there's now a fast-path for fixnum arguments in the
2104 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2105 * optimization: the code generated on x86-64 is more compact thanks
2106 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2107 * bug fix: floating-point exception handling now partly works on
2108 x86-64. (Thanks to James Knight)
2109 * improvement to the MIPS backend from Thiemo Seufer: C-style
2110 64-bit long long arguments and return values to alien functions
2112 * fixed some bugs revealed by Paul Dietz' test suite:
2113 ** the type-error signalled from WARN has a filled-in DATUM slot.
2114 ** the type-error required when a stream is not associated with
2115 a file has the stream as its datum.
2116 ** type-errors on single-floats on x86-64 no longer have
2117 :INVALID-OBJECT as the datum
2118 ** the type-errors signalled for invalid function names now have
2119 a correct expected type
2120 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2121 for structures defined with a :TYPE. Documentation strings for
2122 typed structures are no longer immediately discarded
2123 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2124 broadcast streams and synonym streams. FILE-LENGTH now also works
2125 on broadcast streams.
2127 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2128 * incompatible change: the --noprogrammer option, deprecated since
2129 version 0.7.5, has been removed. Please use the equivalent
2130 --disable-debugger option instead.
2131 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2133 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2134 inoperational for a while now) has been completely removed.
2135 * null lexical environments are now printed as #<NULL-LEXENV>,
2136 significantly reducing the amount of clutter in typical backtraces.
2137 * documentation on weak pointers, finalization, and after GC hooks
2138 has been added to the manual.
2139 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2140 as other specialized array types, is much faster. SUBSEQ and
2141 COPY-SEQ on such arrays have also been sped up.
2142 * optimization: EQL is now more efficient when at least other argument
2143 is known to be of type (OR FIXNUM (NOT NUMBER)).
2144 * fixed bug: the runtime is now less vulnerable to changes in the
2145 size of the SBCL object on OS X, and virtual memory is reserved for
2146 all spaces that need to be at a fixed address.
2147 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2148 * fixed bug: finalizers and after GC hooks that cause consing are now
2150 * fixed bug: compiler error messages and summaries are now printed to
2151 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2152 * fixed inference of the upper bound of an iteration variable.
2153 (reported by Rajat Datta).
2154 * fixed bug 211e: calling local functions with duplicated constant
2155 keyword argument no longer causes a bogus style warning about an
2157 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2158 ftype declaration to be disregarded. (reported by Dave Roberts)
2159 * fixed bug 373: caused by erronous compilation of references to alien
2160 variables in the runtime on ppc/darwin.
2161 * fixed bug 376: CONJUGATE type deriver.
2162 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2163 (reported by Baughn on #lisp)
2164 * a cross-compiler bug on non-x86 platforms has been identified and
2165 fixed. (thanks to Bruno Haible)
2166 * improvements to the MIPS runtime code for increased stability.
2167 (thanks to Thiemo Seufer)
2168 * increased the maximimum compact environment size to allow
2169 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2170 * partial workaround for bug 135: don't name the function we're
2171 calling for hairy cases of EVAL, so as not to accumulate one environment
2172 entry per call to EVAL. (reported by Kevin Reid)
2173 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2174 * optimization: type testing for non-vector arrays should be faster.
2175 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2177 * bug fix: setting 31st element of a bit vector to zero did not work
2179 * bug fix: redefining a class definition which failed due to a
2180 previous accessor / function clash now works (but see BUGS entry
2181 #380 for more problems in this area). (thanks to Zach Beane)
2182 * the long form of DEFINE-METHOD-COMBINATION disables method group
2183 checking when given a single method group with pattern *. (thanks
2185 * on x86 compiler supports stack allocation of results of simple
2186 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2187 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2188 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2189 * fixed some bugs related to Unicode integration:
2190 ** the restarts for recovering from input and output encoding
2191 errors only appear when there is in fact such an error to
2193 * fixed some bugs revealed by Paul Dietz' test suite:
2194 ** MISC.549 and similar: late transformation of unsafe type
2195 assertions into derived types caused unexpected code
2197 ** SCALE-FLOAT type deriver is less wrong.
2198 ** type derivers for EXP, LOG and similar functions compute result
2199 types for complex arguments better.
2200 ** (MISC.563) CONJUGATE type deriver works for very restricted
2202 ** out-of-line type testers for character strings are available.
2203 ** EQUAL compiler transform understands specialness of objects
2205 ** accessing double-floats stored on the stack now works on x86-64.
2206 ** debugger internals could sometimes create invalid lispobjs,
2207 resulting in GC crashes.
2208 ** MISC.548: type check weakening can convert required type into
2210 ** initialization forms for bindings are not in scope of free special
2213 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2214 * incompatible change: thread support for non-NPTL systems has
2215 been removed - locking is buggy and unreliable. A threaded
2216 SBCL build will now warn at startup and refuse to create
2217 new threads, unless futex support is detected in the kernel
2218 * incompatible change: the top level REPL now has only an ABORT
2219 restart associated with it, not TOPLEVEL and ABORT as it used to.
2220 TOP and TOPLEVEL are now available as debugger commands for
2221 returning to the top level.
2222 * incompatible change: forms evaluated in the REPL now use the
2223 global optimization policy.
2224 * incompatible change: user- and system-initialization files are
2225 no longer processed with LOAD, but by READ and EVAL; hence the
2226 global optimization policy, startup package, readtable, etc,
2228 * The .fasl file format number has been incremented because of
2229 various incompatible changes.
2230 * internal entry point details and argument counts no longer appear
2231 in backtraces unless explicitly requested by setting
2232 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2233 * built-in and standard functions no longer have names like "top
2234 level local call to FOO".
2235 * fixed bug 32: functions defined in non-null lexical environments
2236 now have more legible printed representation
2237 * fixed bug 33: functions defined in non-null lexical environemnts
2238 are now more amenable to inspection by INSPECT.
2239 * workaround for bug 354: XEPs no longer appear in backtraces unless
2240 explicitly requested.
2241 * fixed bug: receiving the signal which results from attempting to
2242 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2243 SIGBUS on other *BSDs) on architectures where the C stack is also
2244 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2245 to debugger confusion or wild instability. (reported by Cheuksan
2247 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2248 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2249 (reported by Lutz Euler)
2250 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2251 compiled code. (reported by Paul Dietz)
2252 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2253 specialized parameter to a method to something that is not TYPEP
2254 the specializer is now possible.
2255 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2256 face of package deletion.
2257 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2258 pathname. (reported by David Tolpin on c.l.l)
2259 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2260 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2261 STRING-STREAM and FILE-STREAM, respectively.
2262 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2263 than previously; in addition, its test suite is now run on build.
2264 (thanks to Luke Gorrie)
2265 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2266 * optimization: added a immediate representation for single-floats
2268 * fixed some bugs revealed by Paul Dietz' test suite:
2269 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2270 ** attempting to create a package with a colliding nickname causes
2271 correctable errors to be signalled.
2272 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2273 ** several x86-64 backend bugs related to sign-extension of immediate
2276 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2277 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2278 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2280 * fixed loading of multiply forward-referenced layouts.
2281 (thanks to Cheuksan Wang)
2282 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2283 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2284 (see COMPILE-FILE documentation for details of :PRINT option)
2285 * fixed bugs 19 and 317: fixed-format floating point printing is
2286 more accurate. This also fixes a bug reported by Adam Warner
2287 related to the ~@F format directive.
2288 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2290 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2291 dispatch table if the from-char is a dispatch macro character.
2292 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2293 by the wordsize no longer ignore the last word. (reported by Lutz
2295 * fixed bug in type checking of dynamic-extent variables. (reported
2297 * optimization: sequence traversal functions use their freedom to
2298 coerce function designators to functions.
2299 * optimization: code with many calls to CLOS methods specialized on
2300 CLOS classes has had redundant type checks removed.
2301 * optimization: added declarations to speed up operations that access
2302 the internal character database (for example STRING-UPCASE)
2303 * optimization: comparison operations between floats and sufficiently small
2304 fixnums no longer create extra rationals
2305 * fixed some bugs related to Unicode integration:
2306 ** portions of multibyte characters at the end of buffers for
2307 character-based file input are correctly transferred to the
2308 start of the buffer at the next read.
2309 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2310 passing it through to OPEN.
2311 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2312 argument given to internal calls to OPEN.
2313 ** the built-in comment readers (introduced by character sequences
2314 ";" and "#|") are more forgiving to encoding errors; they will
2315 STYLE-WARN and then attempt to resync the stream at a character
2316 boundary. (thanks to Teemu Kalvas)
2317 * fixed some bugs in the x86-64 port:
2318 ** Negative short int return values from c-calls are sign-extended
2320 ** The stack is aligned to 16-bytes for c-calls, as required by
2321 the ABI. (thanks to Cheuksan Wang)
2322 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2323 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2324 for enums. (thanks to Vincent Arkesteijn)
2325 ** Multiple small optimizations and bugfixes for floating point
2327 * fixed some bugs revealed by Paul Dietz' test suite:
2328 ** Space, Tab, Linefeed, Return and Page have the invalid
2329 secondary constituent character trait.
2330 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2332 ** WITH-INPUT-FROM-STRING should only update the index place on
2334 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2335 works more reliably.
2336 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2337 with one-dimensional arrays with fill pointers.
2338 ** TYPE-OF failed on a complex with an integer realpart and a
2340 ** compiler failure during type inference for the code of form
2341 (IF (EQL X (THE ...)) ...) (MISC.535).
2343 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2344 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2345 platform. The port supports 61-bit fixnums, large memory spaces
2346 and reloading shared object files.
2347 * enhancement: saving cores with foreign code loaded is now
2348 supported on ppc/Darwin in addition to the previously supported
2350 * enhancement: the statistical profiler now walks deeper into the
2351 call stack for more meaningful call-graphs and accrued time
2352 reports (x86/x86-64 only). It also now reports time spent in
2354 * enhancement: it is now possible to trace most individual methods
2355 of a generic function in addition to tracing the generic function
2357 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2359 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2360 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2361 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2362 produces an error. (thanks to Vincent Arkesteijn)
2363 * bug fix: NAMESTRING on pathnames with :WILD components in their
2364 directories works correctly. (thanks to Artem V. Andreev)
2365 * fixed bug 125: compiler preserves identity of closures. (reported
2367 * bug fixed: functions with &REST arguments sometimes failed with
2368 "Undefined function" when compiled with (DEBUG 3). (reported by
2370 * bug fix: overflow during compiling of setting element of a bit
2371 vector with constant index and value. (reported by Timmy Douglas)
2372 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2373 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2374 * on x86 compiler partially supports stack allocation of dynamic-extent
2376 * GO and RETURN-FROM do not check the extent of their exit points
2377 when compiled with SAFETY 0.
2378 * fixed some bugs related to Unicode integration:
2379 ** encoding and decoding errors are now much more robustly
2380 handled; it should now be possible to recover even from invalid
2381 input or output to the terminal. (thanks to Teemu Kalvas)
2382 ** provided a first cut at implementing STRING-TO-OCTETS and
2383 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2384 ** altered the SB-MD5 contributed module slightly, changing the
2385 interface just enough for it to be supportable for builds where
2386 lisp characters are not eight bits.
2387 * fixed some bugs revealed by Paul Dietz' test suite:
2388 ** the FORMATTER-generated functions for ~V[ conditionals require
2389 the correct number of arguments.
2390 ** READ-FROM-STRING returns the mandated second value when applied
2391 to displaced strings.
2392 ** the #\Rubout and #\Backspace characters are treated as invalid
2393 constituent characters by the tokenizer.
2395 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2396 * new feature: reloading changed shared object files with
2397 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2398 * new feature: references to foreign variables and functions
2399 can now be compiled and loaded before the corresponding shared
2400 object file is loaded, as long as the foreign definitions are
2401 available at runtime.
2402 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2403 supported. (thanks to Dan Debertin)
2404 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2405 just keywords. (thanks to Vincent Arkesteijn)
2406 * fixed bug #331: structure-class instances corresponding to
2407 DEFSTRUCT forms are now created eagerly.
2408 * fixed bug #345: backtraces from calls to undefined functions work
2409 on x86 as well. Related bug #61 is now also partially fixed on x86
2410 (backtraces from throws to unknown catch tags.)
2411 * bug fix: lambda-list parsing is now stricter vrt. order and number
2412 of lambda-list keywords.
2413 * bug fix: as specified by AMOP, an error is signalled if a
2414 class-option appears multiple times in a DEFCLASS form. (reported
2416 * bug fix: RANDOM can be compiled when the compiler derives the type
2417 of its numeric argument as a disjoint set of small integers.
2418 (reported by Paul Dietz)
2419 * bug fix: starting a core saved with shared objects loaded when
2420 those objects are not available no longer causes threaded SBCL to
2421 hang. (reported by Sean Ross)
2422 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2424 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2425 argument, which must always be NIL. (reported by Kalle Niemitalo)
2426 * bug fix: printing 1.0d+23 no longer results in an error.
2427 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2428 * bug fix: structure slot setters preserve evaluation order. (thanks
2430 * fixed some bugs related to Unicode integration:
2431 ** RUN-PROGRAM can allow its child to take input from a Lisp
2432 stream. (reported by Stefan Scholl)
2433 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2434 locales. (reported by Ken Causey)
2435 * fixed some bugs revealed by Paul Dietz' test suite:
2436 ** INCF, DECF and REMF evaluate their place form as specified in
2438 ** FORMATTER expands ~{ ~} iteration directives with V or #
2439 parameters correctly.
2440 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2441 consequent uses no arguments correctly.
2442 ** the system has a partial understanding of the (COMPLEX RATIO)
2444 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2447 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2448 * new feature: a build-time option (controlled by the :SB-UNICODE
2449 keyword feature, enabled by default) for building the system with
2450 support for the entire 21-bit character space defined by the
2452 * new feature: the system now has rudimentary external-format
2453 support; the primary user-visible change at this time is that
2454 characters with the high bit set (such as lower-case-e-acute) will
2455 print correctly to a terminal in a UTF-8 environment.
2456 * minor incompatible change: BASE-CHAR no longer names a class;
2457 however, CHARACTER continues to do so, as required by ANSI.
2458 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2459 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2460 has been moved to the SB-EXT package (temporarily re-exported from
2462 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2463 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2465 * fixed bug #351: better error-handlind and reporting for malformed
2467 * fixed bug #350: bignum-printing is now more memory-efficient,
2468 allowing printing of very large bignums, eg. (expt 2 10000000).
2469 (reported by Bruno Haible)
2470 * fixed bug #302: better primitive-type selection for intersection
2472 * fixed bug #308: non-graphic characters now all have names, as
2473 required. (reported by Bruno Haible)
2474 * bug fix: redefining a class with different superclasses now correctly
2475 removes it from the direct-subclasses of its previous superclasses.
2476 (reported by David Morse)
2477 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2478 new value now works. (reported by Bruno Haible)
2479 * bug fix: correct canonicalization of multiple non-standard slot
2480 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2481 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2482 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2483 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2484 now exists, an signals an error.
2485 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2486 during macroexpansion for non-iteration variables as well. (reported
2487 by Bruno Haible for CMUCL)
2488 * bug fix: Cyclic structures and unprintable objects in compiler
2489 messages no longer cause errors. (reported by Bruno Haible)
2490 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2491 and READ-FROM-STRING all now return a primary value of NIL if
2492 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2493 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2494 (reported by Bruno Haible for CMUCL)
2495 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2496 do not designate a condition. (reported by Bruno Haible for
2498 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2499 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2500 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2501 permitting resolution in favour of any of the conflicting symbols.
2502 (reported by Bruno Haible for CMUCL)
2503 * bug fix: EQUAL compiler optimizations is less aggressive on
2504 strings which can potentially compare true despite having distinct
2505 specialized array element types.
2506 * bug fix: unit enumerations can be defined without dividing by
2507 zero. (thanks to Vincent Arkesteijn)
2508 * FORMAT compile-time argument count checking has been enhanced.
2509 (report from Bruno Haible for CMUCL)
2510 * a partial workaround for the bug 262: the compiler does not try to
2511 inline-expand a local function doing RETURN-FROM from a deleted
2512 BLOCK. (thanks to Peter Denno for the bug report and to David
2513 Wragg for the simple test case)
2514 * fixed some bugs revealed by Paul Dietz' test suite:
2515 ** RENAME-PACKAGE allows all package designators as new package
2517 ** constraint propagation and lambda variable substitution are
2518 more cautious in dealing with partially deleted code.
2519 ** compiler sometimes lost reoptimization passes.
2520 ** CERROR, given a condition as condition designator, passes its
2521 remaining arguments to the continue format control without
2523 ** Case-altering FORMAT directives work correctly on non-ASCII
2525 ** The REAL type specifier handles bounds outside the floating
2526 point ranges without signalling FLOATING-POINT-OVERFLOW.
2527 ** Functions with IR1-transformations can create intercomponent
2528 references to global functions.
2529 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2531 ** FORMAT ~R treats a nil value for its first parameter correctly.
2533 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2534 * enhancement: saving cores with foreign code loaded is now
2535 supported on x86/NetBSD and sparc/Linux in addition to the previously
2536 supported platforms.
2537 * bug fix: on some platforms repeated installations caused multiple
2538 copies of HTML documentation to be installed -- should not happen
2539 any more. (reported by Stefan Scholl)
2540 * bug fix: parsing self-recursive alien record types multiple times
2541 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2542 original patch by Helmut Eller for CMUCL)
2543 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2544 (thanks to Richard Kreuter)
2545 * bug fix: defining classes whose accessors are methods on existing
2546 generic functions in other (locked) packages no longer signals
2547 bogus package lock violations. (reported by François-René Rideau)
2548 * bug fix: special variables as DEFMETHOD parameters no longer have
2549 associated bogus type declarations. (reported by David Wragg and
2551 * bug fix: read-write consistency on streams of element-type
2552 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2553 * bug fix: redefiniton of the only method of a generic function with
2554 no DEFGENERIC no longer emits a full WARNING. In addition,
2555 redefinition of generic functions with no DEFGENERIC to an
2556 incompatible lambda list now signals an error. (thanks to Zach
2558 * bug fix: DEFGENERIC now works even when there's a function of the
2559 same name in an enclosing lexical environment. (thanks to Zach
2561 * fixed compiler failure, caused by instrumenting code during
2562 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2563 * optimization: added loop analysis and improved register allocation
2564 * fixed some bugs revealed by Paul Dietz' test suite:
2565 ** POSITION on displaced vectors with non-zero displacement
2566 returns the right answer.
2567 ** (SIMPLE-STRING) is a valid type specifier for sequence
2569 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2571 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2572 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2574 ** The justification version of the FORMAT ~< directive treats
2575 non-zero minpad parameter correctly.
2577 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2578 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2579 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2580 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2581 the supported interface.
2582 * new feature: Single-stepping of code compiled with DEBUG 2 or
2583 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2584 * new feature: saving cores with foreign code loaded is now
2585 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2586 Timothy Moore's work for CMUCL)
2587 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2588 parameters to * instead of NIL if no initform is supplied.
2589 (reported by Johan Bockgaard)
2590 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2591 correctly when FUNCALL appears as the car of the form. Note:
2592 despite this FUNCALL forms are not currently subject to
2593 compiler-macro expansion. (port of Raymond Toy's fix for the
2594 same from CMUCL, reported by Johan Bockgaard)
2595 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2596 (thanks for Teemu Kalvas)
2597 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2598 case instead of terminating the iteration (thanks for Julian
2599 Squires, Sean Champ and Raymond Toy)
2600 * bug fix: incorrect expansion of defgeneric that caused a style
2601 warning. (thanks for Zach Beane)
2602 * bug fix: slot accessor effective method computation works properly
2603 for classes with multiple non-standard applicable methods on
2604 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2605 * on x86 compiler supports stack allocation of results of LIST and
2606 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2607 CMUCL implementation by Gerd Moellmann)
2608 * fixed some bugs revealed by Paul Dietz' test suite:
2609 ** FORMAT strings with both the ~<~:;~> form of the justification
2610 directive and pretty-printing directives cause an error.
2612 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2613 * incompatible change: the internal functions
2614 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2615 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2616 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2617 instead of the old functions.
2618 * new feature: on platforms where "dladdr" is available foreign
2619 function names now appear in backtraces. (based on Helmut Eller's
2621 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2622 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2624 * documentation: ASDF manual is now distributed with SBCL.
2625 * bug fix: SBCL can now load its contributed modules with REQUIRE
2626 even if the system-provided entries have been removed from
2627 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2629 * bug fix: backtraces involving undefined functions or assembly
2630 routines are more informative. (thanks to Brian Downing)
2631 * bug fix: mutually referent alien structures now work correctly.
2632 (reported by Rick Taube)
2633 * bug fix: structures defined by WITH-ALIEN can be referred to
2634 within other definitions in the same WITH-ALIEN.
2635 * bug fix: division operators (MOD, TRUNCATE and the like) with
2636 constant zero divisors and integer dividends no longer generate
2638 * bug fix: provide default methods for INPUT-STREAM-P and
2639 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2640 * bug fix: improve the detection and resolution of MOP metacycles
2641 (where effective method computation depends on the generic function
2642 having its effective method computed). (reported by Bruno Haible)
2643 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2644 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2645 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2646 * bug fix: pathnames with relative directory components can be
2647 represented relative to default pathnames.
2648 * optimization: in taking the GCD of bignums, reduce the two bignums
2649 to approximately the same size (using Euclid's algorithm) before
2650 applying the more sophisticated binary GCD. (thanks to Juho
2652 * optimization: COUNT on bitvectors now operates word-at-a-time.
2653 * optimization: ASH with a positive, but not necessarily constant,
2654 (leftwards) shift, when in a modular context, is compiled to a
2656 * fixed some bugs revealed by Paul Dietz' test suite:
2657 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2658 if the corresponding argument is NIL.
2659 ** FORMAT directives accepting a minpad parameter treat negative
2661 ** literal commas as character parameters to FORMAT directives are
2663 ** literal spaces directly after ~<Newline> directives within a
2664 format-logical-block (~:< ~@:>) do not induce :FILL-style
2665 conditional newlines.
2666 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2667 as specified: it no longer includes conditional newlines).
2668 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2670 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2671 :PER-LINE-PREFIX argument does not evaluate to a string.
2673 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2674 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2675 the manual for details; for now, package locks can be disabled by
2676 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2677 if no major problems are found then it is likely that they will be
2678 compiled in unconditionally.
2679 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2680 unsupported operators on all platforms. To load a shared library
2681 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2682 object file, link it into a shared library outside of SBCL and
2683 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2685 * bug workaround: ROOM T and the GC were not working together
2686 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2687 reporting facility aren't preserved. That reporting has been
2688 disabled, so now until and unless someone figures out how to make it
2689 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2690 * minor incompatible change: as threatened around sbcl-0.8.0, the
2691 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2692 The symbols are also exported from SB-PCL for backwards
2693 compatibility, but more so than before SB-PCL should be treated as
2694 an implementation-internal package.
2695 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2697 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2698 It is known as of this release not to work on the Alpha, however.
2699 * fixed bug #167: errors signalled due to illegal syntax in method
2700 bodies are now more legible.
2701 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2702 designators and can hence be used with TYPEP.
2703 * fixed bug #333: CHECK-TYPE now ensures that the type error
2704 signalled, if any, has the right object to be accessed by
2705 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2706 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2707 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2709 * fixed bug #334: programmatic addition of slots using specialized
2710 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2711 and :ALLOCATION :CLASS slots.
2712 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2713 float exponents. (rereported by Peter Seibel)
2714 * fixed a bug: #\Space (and other whitespace characters) are no
2715 longer considered to be macro characters in standard syntax by
2716 GET-MACRO-CHARACTER.
2717 * fixed bug: initialization of condition class metaobjects no longer
2718 causes an instance of the condition to be created. (reported by
2720 * fixed bug: it is now possible to have slots such that
2721 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2722 description is neither :INSTANCE nor :CLASS.
2723 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2724 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2725 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2726 non-standard SLOT-DEFINITION-ALLOCATION values.
2727 * fixed bugs: various race conditions handling exiting threads.
2728 CL-PPCRE's thread torture test now passes.
2729 * fixed arguably-a-bug: GC time proportional to number of threads in
2730 system even when most of them are idle
2731 * optimization: improved performance of BIT and SBIT on bit-vectors.
2732 * .fasl file incompatibility: The fasl file version number has
2733 been incremented because of changes associated with package locks.
2735 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2736 * minor incompatible change: the system no longer provides
2737 optimization hints (conditions which are TYPEP
2738 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2739 mode; these hints are still emitted when higher SPEED optimization
2741 * new contrib module: a sampling profiler (profiling by statistical
2742 sampling, rather than by instrumenting functions) is available as
2743 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2744 * the behaviour of the standard function ED is now customizeable by
2745 third parties through a hook variable: see ED's documentation
2746 string for information on the protocol.
2747 * the compiler no longer emits efficiency notes for (FUNCALL X)
2748 when the type of X is uncertain under default optimization
2750 * fixed bug 276: mutating a binding of a specialized parameter to a
2751 method to something that is not TYPEP the specializer is now
2753 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2754 exhibit the required behaviour on the x86 platform. (thanks to
2755 Peter van Eynde, Eric Marsden and Bruno Haible)
2756 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2757 even for difficult arguments. (reported by Peter Graves)
2758 * fixed bug 141a: the backquote printer now descends quoted
2760 * fixed another bug in backquote printing: no more destructive
2761 modification of the form's list structure. (reported by Brian
2763 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2764 move between its address being taken and the call to
2765 interrupt_thread, fixing a crashing race condition.
2766 * the SB-POSIX contrib implementation has been adjusted so that it
2767 no longer exhibits ridiculously poor performance when constructing
2768 instances corresponding to C structs.
2770 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2771 * minor incompatible change: the sb-grovel contrib now treats C
2772 structures as alien (in the sense of SB-ALIEN) objects rather than
2773 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2774 has implications for memory management of client code
2775 (sb-grovel-returned objects must now be manually managed) and for
2776 type safety (alien objects now have full types).
2777 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2778 used to control emission of compiler diagnostics, rather than the
2779 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2780 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2781 quality should be considered deprecated.
2782 * install.sh now installs the user manual as well
2783 * (not quite a new documentable feature, but worth considering in
2784 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2785 beginnings of a semantically meaningful condition hierarchy is
2786 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2788 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2789 designator as the defaults argument.
2790 * fixed bug: Displaced arrays whose displaced-to array has become
2791 too small now cause ARRAY-DIMENSION to signal an error, providing
2792 for safer bounds-checking. (reported by Bruno Haible)
2793 * fixed bug: DEFCLASS slot definitions with identical :READER and
2794 :WRITER names now signal a reasonable error. (reported by Thomas
2796 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2798 * fixed bug: Invalid slot specification errors now print correctly.
2799 (thanks to Zach Beane)
2800 * fixed bug 320: Shared to local slot value transfers in class
2801 redefinitions now happen corrently from superclasses as
2802 well. (reported by Bruno Haible)
2803 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2805 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2806 improper lists correctly. (reported by Bruno Haible)
2807 * fixed bug 313: source-transform for <fun-name> was erroneously
2808 applied to a call of a value of a variable with name <fun-name>.
2809 (reported by Antonio Menezes Leitao)
2810 * fixed bug 307: The obsolete instance protocol ensures that
2811 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2812 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2813 remove dead unknown-values globs from the middle of the stack.
2814 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2815 easier to resume long computations after using *BREAK-ON-SIGNALS*
2816 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2817 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2818 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2819 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2820 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2821 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2823 * fixed a (fairly theoretical) bug in string printing: if
2824 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2825 does not have array-element-type equal to the most general string
2827 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2828 function name. (thanks to Nikodemus Siivola)
2829 * fixed bug: compile-time format string checker failed on
2830 non-closed ~{. (reported by Thomas F Burdick)
2831 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2832 don't warn on legal loop code involving more than one aggregate
2833 boolean. (thanks to Nikodemus Siivola)
2834 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2835 in keyword position to MAKE-PACKAGE was not being reported as
2837 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2838 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2840 * fixed bugs 280 and 312: the checking for multiple definitions in a
2841 file is less likely to become confused by uses of inline
2843 * fixed bug: the #S reader macro performs the keyword coercion
2844 specified for slot names. (reported by Kalle Niemitalo)
2845 * fixed bug: lambda lists may contain symbols whose names start with
2846 & but are not lambda-list-keywords; their occurrence triggers a
2848 * fixed bug 321: define-method-combination argument lambda lists do
2849 not cause invalid code to be generated when &optional or &aux
2850 variables have default values. (reported by Bruno Haible)
2851 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2852 have CLOS classes; this appears also to have fixed reported
2853 instability in stack exhaustion detection.
2854 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2855 MUFFLE-WARNING when no associated restart is present is now
2857 * optimization: rearranged the expansion of various defining macros
2858 so that each expands into only one top-level form in a
2859 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2861 * optimization: used a previously little-used slot in symbols to
2862 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2864 * fixed some bugs revealed by Paul Dietz' test suite:
2865 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2867 ** Fixed an optimization bug related to inheritance of initforms
2868 from local to shared slots.
2869 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2870 ** CAST optimizer forgot to flush argument derived type.
2871 ** print/read consistency on floats is now orders of magnitude
2872 more likely. (thanks also to Bruno Haible for a similar report
2874 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2875 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2876 for objects of type REAL. Make it so.
2877 ** SXHASH is specified (infelicitously) to respect similarity,
2878 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2879 it so. (thanks to Markus Ziegler)
2880 ** on the Alpha, the compiler succeeds in compiling functions
2881 returning a known number of arguments greater than 63.
2882 ** fixed handling of invalid NIL arguments in keyword position
2884 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2886 ** provided a readably-printable representation for RANDOM-STATE
2888 ** ensured that pathnames, where they have a namestring, always
2889 print using #P"..." syntax.
2891 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2892 * Support for the forthcoming 2.0 version of the NetBSD kernel
2893 running on x86 hardware has been added. (thanks to Perry
2894 E. Metzger most immediately, and others for their past work)
2895 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2896 current release version; SBCL's OpenBSD support had been broken
2897 since about the time of OpenBSD's switch to ELF binary format.)
2898 * [placeholder for DX summary]
2899 ** user code with &REST lists declared dynamic-extent, under high
2900 speed or space and low safety and debug optimization policy.
2901 * The manual has been converted to Texinfo format and the debugger
2902 chapter from the cmucl manual has been added.
2903 * A facility has been added to extract documentation strings from
2904 sbcl and store them as Texinfo-formatted snippets for inclusion in
2905 the manual (via Texinfo's @include directive)
2906 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2907 the test case to Dave Roberts)
2908 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2909 pointers. (reported by Sean Ross)
2910 * bug fix: PROFILE output is printed nicely even for large numerical
2911 values. (thanks to Zach Beane)
2912 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2913 greater than 32 handle EOF correctly.
2914 * bug fix: on X86 an immediate argument of the IMUL instruction is
2915 correctly printed in disassembly. (thanks to Lutz Euler)
2916 * bug fix: class slots in redefined classes preserve their old
2917 values. (thanks to Bruno Haible and Nikodemus Siivola)
2918 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2919 succeeds. (reported by Marco Baringer)
2920 * fixed some bugs revealed by Paul Dietz' test suite:
2921 ** READ-SEQUENCE now works on ECHO-STREAMs.
2922 ** RATIONALIZE works more according to its specification. (thanks
2925 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2926 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2927 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2928 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2929 should matter to you only if you rebind the printer control
2930 variables and then find you want different bindings in the
2931 debugger than in the ordinary execution of your program.)
2932 * The runtime build system has been tweaked to support building
2933 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2934 assembler and linker. (thanks to Nikodemus Siivola)
2935 * Unbound, undefined, undeclared variables now trigger full
2936 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2937 more often programmer error than deliberate exploitation of undefined
2939 * optimization: the hash algorithm for strings has changed to one
2940 that is less vulnerable to spurious collisions. (thanks to Juho
2942 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2943 needless bounds checking. (thanks to Juho Snellman)
2944 * optimization: implemented multiplication as a modular
2945 (UNSIGNED-BYTE 32) operation on the PPC backend.
2946 * fixed some bugs revealed by Paul Dietz' test suite:
2947 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2949 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2950 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2951 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2953 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2955 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2957 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2958 their output stream on EOF from read.
2959 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2960 have been read to end-of-file.
2961 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2963 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2964 description of determination of which consecutive characters
2966 ** Printing the "Space" character with escaping on now yields "#\\ ",
2967 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2968 ** Reading floating-point numbers with *READ-BASE* set to a number
2969 less than 10 works correctly.
2970 ** Reading floating-point numbers with *READ-BASE* set to a number
2971 more than 10 works correctly.
2972 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2973 the readtable currently in effect.
2975 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2976 * minor incompatible change: parsing of namestrings on a physical
2977 (Unix) host has changed; numbers after the final #\. in a
2978 namestring are no longer interpreted as a version field. This is
2979 intented to be largely invisible to the user, except that the
2980 meaning of the namestring "*.*.*" has changed: it now refers to a
2981 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2982 should usually be replaced by
2983 (make-pathname :name :wild :type :wild :version :wild)
2984 with the added benefit that this is more likely to be portable.
2985 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2986 option to OPEN now signals an error if the file being opened
2987 exists; this may have an impact on existing code.
2988 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2989 signals received, on the PowerPC platforms (both Linux and
2990 Darwin). (thanks to Pierre Mai for pointing out the location of
2992 * several fixes on OS X: The system now builds and runs cleanly on
2993 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2994 (thanks to Brian Mastenbrook)
2995 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2996 second-resolution: integer multiples of 1/3600 between -24 and 24.
2997 (thanks to Vincent Arkesteijn)
2998 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2999 type when called with 1 argument; PEEK-CHAR checked type of
3000 PEEK-TYPE only after having read first character from a
3001 stream. (reported by Peter Graves)
3002 * bug fix: the garbage collector now has much better locality
3003 behaviour, and in particular no longer treats all memory as being
3004 exhausted when many small objects point to each other in a deeply
3006 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3007 recognized as being TYPEP their class.
3008 * bug fix: the PUSHNEW documentation string has been corrected.
3009 (thanks to Vincent Arkesteijn)
3010 * bug fix: defaulting of the value for the last of an atypically
3011 large number of multiple values being bound was not being
3012 performed correctly on the Alpha or PPC platforms
3013 * optimization: implemented multiplication as a modular
3014 (UNSIGNED-BYTE 32) operation on the x86 backend.
3015 * optimization: SEARCH on simple-base-strings can now be open-coded.
3016 (see also contrib/compiler-extras.lisp for inspiration for
3017 teaching the compiler about the Boyer-Moore algorithm).
3018 * value, returned by MAX (and MIN) called with several EQUALP, but
3019 not EQL, arguments now does not depend on compiler settings.
3020 * fixed some bugs revealed by Paul Dietz' test suite:
3021 ** in stack analysis liveness information is propagated from
3022 non-local entry points.
3023 ** pathwise CAST removing failed when the CAST node did not start
3025 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3026 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3028 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3029 host is already defined.
3030 ** RENAME-FILE works on streams instead of signalling an internal
3032 ** PEEK-CHAR uses the current readtable when determining whether
3033 or not a character is whitespace.
3034 ** MERGE-PATHNAMES handles the case when the pathname does not
3035 specify a name while the default-pathname specifies a version.
3036 ** Pathnames now stand a better chance of respecting print/read
3038 ** Attempting to use standardized file system operators with a
3039 pathname with invalid :DIRECTORY components signals a
3041 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3043 ** DIRECTORY on logical pathnames is more correct.
3044 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3045 signal a TYPE-ERROR if their argument is not a stream.
3046 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3047 designator argument does not designate a stream.
3048 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3049 examining the synonym.
3050 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3052 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3053 element-type larger than ([UN]SIGNED-BYTE 32).
3055 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3056 * When built with the :SB-FUTEX feature, threaded builds now take
3057 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3058 for faster/more reliable mutex and condition variable support.
3059 * Incompatible change (but one you probably shouldn't have been using
3060 anyway): the interface and code for arbitrating between multiple
3061 threads in the same user session has been redesigned.
3062 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3063 error when called without an explicit environment argument.
3064 (thanks to Nikodemus Siivola)
3065 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3066 confused about their position. (thanks to Adam Warner and Gerd
3068 * bug fix: Pretty printing backquoted forms with unquotations in the
3069 argument list position of various code constructs such as LAMBDA
3070 now works correctly. (reported by Paul Dietz)
3071 * bug fix: Pretty printing unquotations no longer loses all
3072 stream position information.
3073 * optimization: performance of string output streams is now less
3074 poor for multiple small sequence writes.
3075 * optimization: performance of CSUBTYPEP in the presence of complex
3076 expressions involving CONS and NOT many times has been improved.
3077 (reported by Paul Dietz)
3078 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3080 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3081 streams for the REPL, for the debugger, and so on. (thanks to
3083 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3084 * fixed some bugs revealed by Paul Dietz' test suite:
3085 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3086 is ignored if it is too small, rather than propagating through
3087 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3088 ** extremely complex negations of CONS types were not being
3089 sufficiently canonicalized, leading to inconsistencies in
3091 ** VALUES tranformer lost derived type.
3093 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3094 * fixed a bootstrapping bug: the build process no longer assumes
3095 that the various BOOLE-related constants have the same value in
3096 host and target lisps. (noted by Paul Dietz' test suite on an
3097 SBCL binary built from CLISP)
3098 * The system can now be dynamically linked on the MIPS platform,
3099 which enables dynamic loading of foreign code from Lisp. (thanks
3100 to Ralf Baechle for discussions on the MIPS ABI)
3101 * The system now records debugging information for its own source
3102 files in a filesystem-position-independent manner, relative to
3103 the "SYS" logical host.
3104 * fixed a compiler bug: MV-LET convertion did not check references
3105 to the "max args" entry point. (reported by Brian Downing)
3106 * tweaked disassembly notes to be less confident about proclaiming
3107 some instruction as an LRA. (thanks to Brian Downing)
3108 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3109 now each have their own history, command character, and other
3110 characteristics. (thanks to David Lichteblau)
3111 * fixed some bugs revealed by Paul Dietz' test suite:
3112 ** compiler failure in compiling LOGAND expressions including a
3114 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3115 shift greater than 32.
3116 ** FLUSH-DEST did not mark blocks for type check regeneration.
3117 ** HANDLER-CASE failed to accept declarations in handler clauses
3118 in some circumstances.
3120 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3121 * New code in contrib/sb-introspect (still probably not entirely
3122 stable yet) provides some support for smart Lisp development
3123 environments like SLIME.
3124 * The conditions signalled for errors occurring when loading .fasl
3125 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3126 in a way which should help ASDF recover gracefully.
3127 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3128 stuff has been cleaned up. If you code contrib/ stuff, this might
3129 affect you, and you can look at contrib/README, contrib/STANDARDS,
3130 and/or the 0.8.4.27 diff to check.
3131 * In full calls the compiler now does not generate checks for declared
3132 argument types for all arguments.
3133 * various threading fixes
3134 ** and some experimental patches which didn't make it into
3135 the main tree for this release, but which are shipped in
3136 contrib/experimental-thread.patch as a possible fix for some
3137 failures (deadlock, spinning...) in GC-intensive multithreaded
3139 * fixed PPC build problem (source code incompatibility of different
3140 library versions): added offsetof() hackery which attempts to divine
3141 where glibc maintainers put uc_mcontext today
3142 * fixed bug 282: compiler does not trust type assertions while passing
3143 arguments to a full call.
3144 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3145 &OPTIONAL VALUES type parameter.
3146 * fix bug 214: algorithm for noting rejected templates is now more
3147 similar to that of template seletion. (also reported by rydis on
3149 * fixed bug 141b: printing backquoted information readably and prettily
3150 inserts a space where necessary.
3151 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3152 (CHARACTER 10) are now reported as errors, rather than propagated
3153 as unknown types. (reported by piso on #lisp)
3154 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3155 with values NIL and :ERROR. (thanks to Milan Zamazal)
3156 * fixed bug 191c: CLOS now does proper keyword argument checking as
3157 described in CLHS 7.6.5 and 7.6.5.1.
3158 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3159 longer raise an error; further, using a list as a for-as-arithmetic
3160 counter now raises a meaningful error.
3161 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3162 now understood by sequence creation functions such as MAKE-SEQUENCE
3164 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3165 a STRING-INPUT-STREAM.
3166 * compiler enhancement: SIGNUM is now better able to derive the type
3168 * type declarations inside WITH-SLOTS are checked. (reported by
3170 * fixed some bugs revealed by Paul Dietz' test suite:
3171 ** incorrect optimization of TRUNCATE for a positive first
3172 argument and negative second.
3173 ** compiler failure in let-convertion during flushing dead code.
3174 ** compiler failure while deriving type of TRUNCATE on an
3175 interval, containing 0.
3176 ** ASH of a negative bignum by a negative bignum count now returns
3178 ** intersection of CONS types now canonicalizes properly, fixing
3179 inconsistencies in SUBTYPEP.
3181 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3182 * incompatible change: The --disable-debugger command line
3183 option now clobbers the debugger at a more fundamental
3184 level, by redefining #'INVOKE-DEBUGGER instead of by
3185 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3186 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3187 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3188 enter the debugger REPL and then suffer recursive errors
3189 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3190 while under the new system, BREAK in --disable-debugger mode
3191 terminates the system just as an unhandled error would.
3192 * fixed compiler performance when processing loops with a step >1;
3193 * bug fix: DOCUMENTATION now retrieves generic function
3194 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3195 support has been systematized, and now supports the methods
3196 specified by ANSI, along with a default method and a method for
3197 slot documentation. (reported by Nathan Froyd)
3198 * bug fix: effective methods associated with a generic function are
3199 no longer cached over a change of that generic function's method
3200 combination. (reported by Andreas Fuchs)
3201 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3202 names a non-existent directory. (thanks to Andreas Fuchs)
3203 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3204 the PPC platform, lead to stack corruption; this has been fixed.
3205 (reported by Rainer Joswig)
3206 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3207 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3208 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3209 arithmetic in general, is now much more reliable on the PPC
3211 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3212 platform now returns the right answer.
3213 * optimization: restored some effective method precomputation in
3214 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3215 precomputation is now tunable.
3216 * optimization: compiler-internal data structure use has been
3217 reviewed, and changes have been made that should improve the
3218 performance of the compiler by about 20%.
3219 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3220 simple-base-strings and simple-bit-vectors is improved.
3221 * optimization: the optimization of 32-bit logical and arithmetic
3222 functions introduced in version 0.8.3 on the x86 has been
3223 implemented on the mips, ppc and sparc platforms; an
3224 implementation of the same facility, but for 64-bit arithmetic,
3225 has been added for the alpha.
3226 * microoptimization: the compiler is better able to make use of the
3227 x86 LEA instruction for multiplication by constants.
3228 * bug fix: in some situations compiler did not report usage of
3229 generic arithmetic in (SPEED 3) policy.
3230 * bug 145b fix: compiler used wrong type specifier while converting
3231 MEMBER-types to numeric.
3232 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3234 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3235 index argument now works properly on the Alpha platform.
3236 * bug fix: floating point exception treatment on the Alpha platform
3238 * bug fix: FILE-POSITION works much better on string input and
3239 output streams. (thanks to Nikodemus Siivola)
3240 * bug fix: many threading/garbage collection symptoms sorted.
3241 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3242 might be pseudo-atomic.
3243 * internal change: Stopping for GC is now done with signals not
3244 ptrace. GC is now done in whichever thread wanted it, instead of
3246 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3248 * bug fix: result form in DO is not contained in the implicit
3250 * incompatible change: ICR structure is changed; the value part of
3251 CONTINUATION is now called LVAR; corresponding functions are
3252 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3253 * added type deriver for ISQRT (thanks to Robert E. Brown).
3254 * bug fix: better support for loading from the command line when an
3255 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3257 * fixed some bugs revealed by Paul Dietz' test suite:
3258 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3259 ** ROUND and FROUND now give the right answer when given very
3260 small float arguments.
3261 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3263 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3264 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3265 ** LCM should return a non-negative integer.
3266 ** PARSE-INTEGER returned the index of a terminator instead of the
3267 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3268 ** PARSE-INTEGER returned an incorrect index being applied to a
3270 ** LCM with two arguments of 0 returns 0 rather than signalling
3272 ** unsigned addition of a 32-bit constant with the high bit set no
3273 longer causes an internal compiler error on the x86.
3274 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3275 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3276 with negative last argument.
3277 ** byte specifiers with zero size and position no longer cause
3278 an error during type derivation.
3279 ** bignum multiplication on the Alpha platform now returns the
3281 * porting: The system now builds on SuSE AMD64, although it still
3282 generates a 32-bit binary.
3283 * .fasl file incompatibility: The fasl file version number has
3284 been incremented (because of the changes to internal compiler
3285 data structures referred to above).
3287 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3288 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3289 more accurately, on the Darwin kernel running on PowerPC hardware.
3290 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3291 * Compiler code deletion notes now signal a condition of type
3292 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3293 an associated MUFFLE-WARNING restart.
3294 * The compiler now performs limited argument count validation of
3295 constant format strings in FORMAT, and where appropriate in ERROR,
3296 CERROR and WARN. (thanks to Gerd Moellmann)
3297 * New ASDF-INSTALL contrib can be used for automatic download and
3298 installation of third-party Lisp code from CCLAN or other sites
3300 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3301 which forces another thread to execute a function supplied by the
3303 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3304 now accept and act upon their :ELEMENT-TYPE keyword argument.
3305 (reported by Martin Atzmueller, Edi Weitz)
3306 * bug fix: FILE-POSITION now accepts position designators up to
3307 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3308 is the greater. (thanks to Patrik Nordebo)
3309 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3310 Kalle Olavi Niemitalo)
3311 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3312 printable. (reported by Eric Marsden)
3313 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3314 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3315 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3316 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3317 (thanks to Stig Sandoe)
3318 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3319 UNREAD-CHAR now correctly includes the unread character in the
3320 target sequence. (thanks to Gerd Moellmann)
3321 * bug fix in threaded builds: the system can now be suspended and
3322 resumed by shell job control with minimal disruption.
3323 * bug fixes in times and timezones >2038AD
3324 * better handling of "where is GNU make?" problem in build scripts
3325 (thanks to Nikodemus Siivola)
3326 * new optimization: inside a named function any reference to a
3327 function with the same name is considered to be a self-reference;
3328 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3329 optimization quality.
3330 * new optimization on x86: logical functions and + now have
3331 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3332 used when the result is truncated to 32 bits.
3333 * VALUES declaration is partially enabled.
3334 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3335 * fixed some bugs revealed by Paul Dietz' test suite:
3336 ** The system now obeys the constraint imposed by
3337 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3338 types form a lattice under type intersection.
3339 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3340 ** ASSOC now ignores NIL elements in an alist.
3341 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3342 and (1+ MOST-POSITIVE-FIXNUM) answers.
3343 ** The addition of a method with invalid qualifiers to a generic
3344 function does not cause an error to be signalled immediately;
3345 a warning is signalled, and the error is generated only on
3346 calling the generic function.
3347 * changed .fasl file version number, in part to add type codes for
3348 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3349 obscure ANSI requirements
3351 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3352 * fixed bug 148: failure to inline-expand a local function left
3353 garbage, confusing the compiler.
3354 * fixed bugs 3cd: structure slot readers perform type check if the
3355 slot can have an invalid value (i.e. it is either not initialized
3356 or can be written with a less specific slot writer).
3357 * bug fix: the compiler now traps array references to elements off
3358 the end of an array; previously, the bounds checking in some
3359 circumstances could go off-by-one.
3360 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3362 * type declarations for array element types now obey the description
3363 on the CLHS page "Declaration TYPE", as per discussions on
3364 sbcl-help around 2003-05-08. This means that a declaration
3365 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3366 declaration, all references to BAR will be asserted or assumed
3367 (with THE, so dependent on compiler policy) to involve objects of
3368 type FOO. Note that no such declaration is implied in
3369 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3370 * declared types of functions from the "Conditions"
3371 chapter. (reported by Paul Dietz)
3372 * bug fix: CERROR accepts a function as its first argument.
3373 * bug fix: NTH an NTHCDR accept a bignum as index
3374 arguments. (reported by Adam Warner)
3375 * optimization: character compare routines now optimize comparing
3376 against a constant character. (reported by Gilbert Baumann)
3377 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3378 argument now works properly on the MIPS platform.
3379 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3380 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3381 declared to have a functional type, does not cause an error
3383 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3384 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3385 * fixed bug: if last continuation of a deleted block has a
3386 destination, this destination should be deleted too. (reported by
3388 * fixed a bug in the bootstrap process: the host compiler's values
3389 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3390 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3391 test case from Patrik Nordebo)
3392 * improved the ability of the disassembler on the PPC platform to
3393 provide helpful disassembly notes.
3394 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3395 the class in more cases than previously.
3396 * bug fix: FILE-POSITION now understands :START and :END for
3397 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3398 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3399 8) data. (thanks to David Lichteblau)
3400 * bug fix: it is possible to add a method to a generic function
3401 without lambda list.
3402 * bug fix: reader failed to signal END-OF-FILE inside an
3403 object representation. (reported by Nikodemus Siivola)
3404 * fixed some bugs revealed by Paul Dietz' test suite:
3405 ** LAST and [N]BUTLAST should accept a bignum.
3406 ** condition slot accessors are methods.
3407 ** (VECTOR NIL) is a subtype of STRING.
3409 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3410 * minor incompatible change: some nonsensical specialized lambda
3411 lists (used in DEFMETHOD) which were previously ignored now signal
3413 * minor incompatible change: the system is now aware of the types of
3414 variables in the COMMON-LISP package, and will signal errors for
3415 most violations of these type constraints (where previously they
3416 were silently accepted).
3417 * minor incompatible change: COMPILE-FILE now uses the freedom
3418 afforded (ANSI 3.2.2.3) to use derived function types for
3419 functions defined in the same file. This also permits the system
3420 to warn on static type mismatches and function
3421 redefinition. (Currently it does not work with high DEBUG level.)
3422 * minor incompatible change: VALUES declaration is disabled.
3423 * When issuing notes, the compiler now signals a condition of type
3424 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3425 restart for use in user handlers. It is expected that the
3426 COMPILER-NOTE condition will eventually become a condition
3427 supertype to a hierarchy of note types, which will then be
3428 handleable in a similar fashion. However, at the moment, no such
3429 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3430 but it's an implementation detail, not a classification for the
3432 * Changes in type checking closed the following bugs:
3433 ** type checking of unused values (192b, 194d, 203);
3434 ** template selection based on unsafe type assertions (192c, 236);
3435 ** type checking in branches (194bc).
3436 * A short form of VALUES type specifier has ANSI meaning (it has
3437 increased the number of situations when SBCL cannot perform type
3439 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3440 keywords or constants is permissible.
3441 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3442 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3443 classes. (thanks to Antonio Martinez)
3444 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3445 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3446 argument to a pretty-print stream. Instead, it leaves any such
3447 operations to DESCRIBE-OBJECT methods.
3448 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3450 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3451 lambda lists. (thanks to David Lichteblau)
3452 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3453 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3454 (thanks to Gerd Moellmann)
3455 * fixed bug 246: increased compilation speed of long
3456 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3458 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3460 * DEFCONSTANT now throws a condition of type
3461 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3462 constant to a non-EQL value; CONTINUE and ABORT restarts
3463 respectively change and preserve the value.
3464 * fixed bug 63: The code walker, part of the implementation of CLOS,
3465 is now better at handling symbol macros.
3466 * bug fix: There is no longer an internal implementation type named
3467 CL:LENGTH. (reported by Raymond Toy)
3468 * bug fix: In macro-like defining macros/special operators the
3469 implicit block does not enclose the lambda list.
3470 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3471 enclosed in parentheses) are not suitable as type specifiers, and
3472 their use properly signals an error now.
3473 * bug fix: An argument count mismatch for a type specifier in code
3474 being compiled no longer causes an unhandled error at compile
3475 time, but signals a compile-time warning.
3476 * fixed simple vector readable printing
3477 * bug fix: DESCRIBE takes more care over whether the class
3478 precedence list slot of a class is bound before accessing it.
3479 (reported by Markus Krummenacker)
3480 * bug fix: FORMATTER can successfully compile pretty-printer format
3481 strings which use variants of the ~* directive inside.
3482 * bug fix: SEARCH now applies its TEST predicate to the elements of
3483 the arguments in the correct order. (thanks to Wolfhard Buss)
3484 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3485 in type inference. (thanks to Robert E. Brown)
3486 * bug fix: Reading in symbols with an explicit package name of ""
3487 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3488 * fixed some bugs revealed by Paul Dietz' test suite:
3489 ** NIL is now allowed as a structure slot name.
3490 ** Arbitrary numbers, not just REALs, are allowed in certain
3491 circumstances in LOOP for-as-arithmetic clauses.
3492 ** Multiple class redefinitions before slot access no longer
3493 causes a type error.
3494 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3495 association between the name and a class.
3496 ** Generic functions with non-standard method-combination and over
3497 five methods all of which return constants no longer return NIL
3498 after the first few invocations. (thanks to Gerd Moellmann)
3499 ** CALL-NEXT-METHOD with no arguments now passes the original
3500 values of the arguments, even in the presence of assignment.
3501 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3503 ** DISASSEMBLE works with closures and funcallable instances.
3504 ** ADD-METHOD now returns the generic function, not the new method.
3505 ** FIND-METHOD signals an error if the lengths of the specializers
3506 is incompatible with the generic function, even if the ERRORP
3508 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3509 which its argument is a member.
3510 ** DEFCLASS only redefines the class named by its class-name
3511 argument if that name is the proper name of the class;
3512 otherwise, it creates a new class.
3513 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3514 of the UNBOUND-SLOT condition to the name of the slot.
3515 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3516 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3517 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3518 SLOT-MAKUNBOUND in the specified fashion.
3520 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3521 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3522 cross-compilation host. As a consequence, we can now bootstrap our
3523 way up to SBCL starting with a bare gcc toolchain and human-readable
3524 source code (first the source to CLISP, then the source to SBCL).
3525 * A contributed module containing a partial implementation of the
3526 simple-streams interface has been included. (thanks to Rudi
3528 * A contributed module implementing the RFC1321 Message Digest
3529 Algorithm, known as MD5, has been included.
3530 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3531 no longer has any effect, as the code controlled by this feature
3532 has been deleted. (As far as we know, no-one has ever built using
3533 this feature, and its semantics were confused in any case).
3534 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3535 work on conditions (as required by the ANSI specification),
3536 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3537 expected behaviour on conditions. Users should note, however,
3538 that such behaviour is not required by the ANSI specification,
3539 and so use of this behaviour may render their code unportable.
3540 * fixed some bugs revealed by Paul Dietz' test suite:
3541 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3543 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3544 ** SXHASH on condition objects no longer returns NIL.
3545 ** :ALLOCATION :CLASS slots are better treated; their values are
3546 updated on class redefinition, and initforms inherited from
3547 superclasses are applied.
3548 ** REMOVE-METHOD returns its generic function argument even when
3549 no method was removed.
3550 ** SHARED-INITIALIZE now initializes the values of the requested
3551 slots, including those with :ALLOCATION :CLASS.
3552 ** ALLOCATE-INSTANCE now works on structure classes defined via
3553 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3555 ** SLOT-EXISTS-P now works on conditions, as well as structures
3557 ** MAKE-LOAD-FORM now has the required methods on
3558 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3559 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3560 keyword, and now implements the SLOT-NAMES argument.
3561 ** methods with &OPTIONAL arguments no longer allow too many
3562 arguments to be passed in the call without error.
3563 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3564 option is consistent with the required arguments of the generic
3565 function lambda list.
3566 * bug fix: REQUIRE accepts a string designator. (Thanks to
3568 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3569 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3570 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3571 * bug fix: The compiler now checks for duplicated variables in macro
3573 * bug fix: SETQ on globals returns the correct value.
3574 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3575 not a COMPILER-ERROR (followed by some other strange error on
3576 choosing the CONTINUE restart).
3577 * bug fix: make.sh and friends are now more consistent in the way that
3578 they look for GNU "make".
3580 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3581 * experimental native threads support (on x86 Linux >=2.4 only).
3582 This is not compiled in by default: you need to add :SB-THREAD to
3583 the target features. See the "Beyond ANSI" chapter of the manual
3585 * fix for longstanding nonANSIism: The old distinction between
3586 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3587 The return value from CL:FIND-CLASS is now a CLOS class, and
3588 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3589 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3590 * An interface to the MetaObject Protocol, as described in Kiczales,
3591 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3592 MIT Press, 1991, is available from the SB-MOP package.
3593 * incompatible change: the SB-PCL package should now be considered
3594 a private implementation detail, and no longer a semi-private MOP
3596 * minor incompatible change: due to rearrangement for threads, the
3597 control stack and binding stack are now allocated at arbitrary
3598 addresses instead of being hardcoded per-port. Users affected by
3599 this probably have to be doing advanced things with shared
3600 libraries, and will know who they are.
3601 * minor incompatible change: Previously, all --eval forms used were
3602 processed with READ before any of them were processed with EVAL.
3603 Now each --eval form is processed with both READ and EVAL before
3604 the next --eval form is processed. (Thus package operations like
3605 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3606 work as the user might reasonably expect.)
3607 * minor incompatible change: *STANDARD-INPUT* is now only an
3608 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3610 * minor incompatible change: Y-OR-N-P is now character-oriented,
3611 not line oriented. Also, YES-OR-NO-P now works without errors.
3612 (thanks to Antonio Martinez)
3613 * sb-aclrepl module improvements: an integrated inspector, added
3614 repl features, and a bug fix to :trace command.
3615 * Known functions, which cannot be open coded by the backend, are
3616 considered to be able to check types of their arguments. (fixing
3617 a bug report by Nathan J. Froyd)
3618 * fixed a bug in computing method discriminating functions: It is
3619 now possible to define methods specialized on classes which have
3620 forward-referenced superclasses. (thanks to Gerd Moellmann)
3621 * fixed evaluation order in optional entries (reported by Gilbert
3623 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3624 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3625 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3626 required-by-AMOP NAME argument, as well as CLASS and
3627 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3628 * fixed bug 20: DEFMETHOD can define methods using names that are
3629 not the proper names of classes to designate class specializers.
3630 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3631 Unix file descriptors, instead of blowing up. (thanks to Antonio
3633 * Garbage collection refactoring: user-visible change is that a
3634 call to the GC function during WITHOUT-GCING will not do garbage
3635 collection until the end of the WITHOUT-GCING. If you were doing
3636 this you were probably losing anyway.
3637 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3638 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3639 TYPEP the latter but not the former.
3640 * The compiler issues a full WARNING for calls to undefined functions
3641 with names from the CL package.
3642 * MAP-INTO for a vector destination is open coded. (reported by
3643 Brian Downing on c.l.l)
3644 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3645 documentation string.
3646 * fixed some bugs revealed by Paul Dietz' test suite:
3647 ** COPY-ALIST now signals an error if its argument is a dotted
3649 ** Condition slots are now accessed more correctly in the presence
3650 of multiple initargs for a given slot.
3651 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3652 exclude restarts of the same name associated with a different
3654 ** DEFCLASS of forward-referenced classes with another
3655 forward-referenced class in the superclasses list no longer
3657 ** Condition slots are now initialized once each, not multiple
3658 times. (thanks to Gerd Moellmann)
3659 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3661 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3662 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3663 arguments contain duplicated elements.
3664 ** RESTART-CASE understands local macros.
3665 ** RESTART-CASE associates exactly its own restarts with a condition.
3666 ** ENDP in safe mode checks its argument to be of type LIST.
3667 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3668 in question is unbound.
3669 ** Optimized MAKE-INSTANCE functions no longer cause internal
3670 assertion failures in the presence of duplicate initargs.
3671 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3672 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3673 propagated even in the ctor optimized implementation of
3675 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3677 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3678 * a better implementation of SXHASH on (simple) bit vectors,
3679 measured both in execution speed and in distribution of results
3680 over the positive fixnums, has been installed. Likewise, a better
3681 implementation of EQUAL for simple bit vectors is now available.
3682 * fixed CEILING optimization for a divisor of form 2^k.
3683 * fixed bug 240 (emitting extra style warnings "using the lexical
3684 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3685 by Antonio Martinez)
3686 * fixed SXHASH, giving different results for NIL depending on type
3687 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3688 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3689 variable. (found by Rolf Wester)
3690 * SBCL does not ignore type declarations for special
3691 variables. (reported by rif on c.l.l 2003-03-05)
3692 * some bug fixes in contrib/sb-aclrepl/
3693 * fixed some bugs revealed by Paul Dietz' test suite:
3694 ** a bug in the CONS type specifier, whereby the CAR and CDR
3695 types got intertwined, has been fixed;
3696 ** the type system is now able to reason about the interaction
3697 between INTEGER and RATIO types more completely;
3698 ** APPEND, [N]REVERSE and NRECONC check that those their
3699 arguments, which must be proper lists, are really so;
3700 ** An array specialized to be unable to hold elements has been
3701 implemented, as required -- yes, really -- by ANSI;
3702 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3703 on malformed property lists;
3705 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3706 * incompatible packaging change: in line with Unix convention,
3707 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3708 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3709 * REQUIRE and PROVIDE are now optionally capable of doing something
3710 useful. See the documentation string for REQUIRE.
3711 * infrastructure for a managed SBCL contrib system: contributed
3712 modules in this release include:
3713 ** the ASDF system definition facility;
3714 ** an interface to the BSD Sockets API;
3715 ** an ACL-like convenience interface to the repl;
3716 (thanks to Kevin Rosenberg)
3717 ** an implementation of ROTATE-BYTE, with efficient implementation
3719 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3720 gives a closer approximation to the right answer than previously.
3721 (thanks to Raymond Toy)
3722 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3723 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3724 optional environment arguments, as required by ANSI.
3725 * fixed bugs in other functions taking environment objects, allowing
3726 calls with an explicit NIL environment argument to be compiled
3728 * fixed bug 228: primary return values from
3729 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3730 COMPILE or FUNCTION.
3731 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3732 :TYPE will no longer signal errors on innocuous objects.
3733 * fixed bug 231b: SETQ is better at respecting type declarations in
3734 the lexical environment.
3735 * fixed a bug in DEFCLASS: classes named by symbols with no or
3736 unprintable packages can now be defined.
3737 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3738 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3739 * fixed compiler failure related to checking types of functions.
3740 (reported by Robert E. Brown)
3741 * the compiler is now much more consistent in its error-checking
3742 treatment of bounding index arguments to sequence functions: in
3743 (SAFETY 3) code, errors will be signalled in almost all cases if
3744 invalid sequence bounding indices are passed to functions defined
3745 by ANSI to operate on sequences.
3746 * fixed a bug in the build procedure: documentation of SBCL-specific
3747 packages is now preserved and available in the final Lisp image.
3748 * lifted FDEFINITION lookup out of loops in the implementation of
3749 many list operations. (thanks to Robert E. Brown)
3750 * fixed a bug in the reader: the #n# reader macro now works for
3751 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3752 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3753 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3754 E. Brown and Tony Martinez respectively)
3755 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3756 SLOT-BOUNDP: in particular, it is now able to optimize them much
3757 better, and is now not vulnerable to having packages renamed.
3758 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3759 always called when a slot is not present in an instance. (thanks
3761 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3762 longer signal an error on unreading a character following EOF on
3763 the previous constituent stream. (thanks to Tony Martinez)
3764 * fixed some bugs revealed by Paul Dietz' test suite:
3765 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3766 not just nonnegative fixnums;
3767 ** the logical bit-array operators such as BIT-AND now accept an
3768 explicit NIL for their "opt-arg" argument (to indicate a
3769 freshly-consed result bit-array);
3770 ** ELT now signals an error on an invalid sequence index in safe
3772 ** the type system is now cleverer about negations of numeric
3773 types, and consequently understands the BIGNUM and RATIO types
3775 ** the type system is now cleverer about the interaction between
3776 INTEGER and RATIO types: while bugs still remain, many more
3777 cases are accurately computed;
3778 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3779 if it is in the last clause;
3780 ** CONSTANTLY now correctly returns a side-effect-free function in
3782 ** DECLARE is no longer treated as a special-operator; in
3783 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3784 * incremented fasl file version number due to the change in the
3785 DEFSTRUCT-SLOT-DESCRIPTION structure.
3787 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3788 * minor incompatible change: code processed by the "interpreter" or
3789 EVAL now has a compilation optimization policy of (DEBUG 2)
3790 (changed from (DEBUG 1)) to improve debuggability of interactive
3791 development, and to allow the use of the debug RETURN command in
3793 * an experimental implementation of the RETURN command for the
3794 debugger has been included. (thanks to Frederik Kuivinen)
3795 * fixed bug 62: constraints were not propagated into a loop.
3796 * fixed bug in embedded calls of SORT (reported and investigated by
3798 * fixed some bugs revealed by Paul Dietz' test suite:
3799 ** printing and reading of arrays with some dimensions having
3800 length 0 (thanks to Gerd Moellmann);
3801 ** BOA constructor with &AUX argument without a default value does
3802 not cause a type error;
3803 ** CONSTANTP now returns true for all self-evaluating objects.
3805 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3806 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3807 accessors that are related by inheritance, as specified in the
3808 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3809 Valtteri Vuorikoski)
3810 * The compiler is now able to inline functions that were defined in
3811 a complex lexical environment (e.g. inside a MACROLET).
3812 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3814 * Support for the upcoming FreeBSD-5.0 release has been included.
3815 (thanks to Dag-Erling Smorgrav)
3816 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3817 effect when it is not in a toplevel context.
3818 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3819 stand a better chance of being correct. (thanks to Gerd
3821 * fixed bug in COERCE, which now signals an error on coercing a
3822 rational to a bounded real type which excludes the expected
3824 * The compiler is now able to derive types more accurately from the
3825 COERCE and COMPILE functions.
3826 * fixed bug 223: functional binding is considered to be constant
3827 only for symbols in the CL package.
3828 * fixed bug 231: SETQ did not check the type of a variable being set
3829 (reported by Robert E. Brown)
3830 * A new optimization for MAKE-INSTANCE has been included, fixing
3831 various bugs (including relating to :ALLOCATION :CLASS slots and
3832 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3834 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3835 ** As required by ANSI, LOOP now disallows anonymous collection
3836 clauses such as COLLECT I in conjunction with aggregate boolean
3837 clauses such as THEREIS (= I 1);
3838 ** LOOP now signals an error when any variable is reused in the
3839 same loop (including the potentially useful construct analogous
3840 to WITH A = 1 WITH A = (1+ A);
3841 ** IT is only a special loop symbol within the first clause of a
3842 conditional loop clause;
3843 ** LOOP with a typed iteration variable over a hashtable now
3844 signals a type error iff it should.
3845 * fixed some other bugs revealed by Paul Dietz' test suite:
3846 ** FILE-STREAM now names the class previously known as FD-STREAM;
3847 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3848 argument) no longer signals an error;
3849 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3850 of the slot symbol, rather than using the current package
3851 ((:CONC-NAME "") continues to intern the slot's name in the
3853 * incremented fasl file version number, because of the incompatible
3854 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3855 of the new implementation of DEFINE-COMPILER-MACRO.
3857 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3858 * Support for building SBCL for MIPS platforms running in
3859 little-endian mode has now been checked in, and basic
3860 functionality on said platforms verified.
3861 * minor incompatible change: PCL now records the pathname of a file
3862 in which methods and the like are defined, rather than its
3864 * minor incompatible change: TRUENAME now considers the truename of
3865 a file naming a directory to be the pathname with :DIRECTORY
3866 component indicating that directory.
3867 * minor incompatible change: a NAMED clause in the extended form of
3868 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3869 reason for the previous behaviour is unclear.
3870 * more systematization and improvement of CLOS and MOP conformance
3871 in PCL (thanks to Gerd Moellman and Pierre Mai):
3872 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3874 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3875 primary methods with no specializers;
3876 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3878 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3879 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3880 FORWARD-REFERENCED-CLASSes; error reporting on
3881 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3883 ** SXHASH on CLOS instances now uses a slot internal to the
3884 instance to return different numbers on distinct instances,
3885 while preserving the same return value through invocations of
3887 ** DEFMETHOD signals errors when methods with longer incongruent
3888 lambda lists are added to generic functions;
3889 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3890 CLASS, as specified in AMOP;
3891 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3892 on the order returned by the primary method for classes of
3893 class STANDARD-CLASS;
3894 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3895 * fixed some bugs shown by Paul Dietz' test suite:
3896 ** DOLIST puts its body in TAGBODY;
3897 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3899 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3900 value producing form;
3901 ** if more variables are given to PROGV than values, extra
3902 variables are bound and made to have no value;
3903 ** NSUBSTITUTE on list arguments gets the right answer with
3905 ** ELT signals an error of type TYPE-ERROR when the index argument
3906 is not a valid sequence index;
3907 ** LOOP signals (at macroexpansion time) an error of type
3908 PROGRAM-ERROR when duplicate variable names are found;
3909 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3910 ** FUNCALL of special-operators now cause an error of type
3912 ** PSETQ now works as required in the presence of side-effecting
3913 symbol-macro places;
3914 ** NCONC accepts any object as its last argument;
3915 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3917 ** loop-for-as-package does not require a package to be explicitely
3919 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3921 * fixed bug 166: compiler preserves "there is a way to go"
3922 invariant when deleting code.
3923 * fixed bug 172: macro lambda lists with required arguments after
3924 &REST arguments now cause an error to be signalled. (thanks to
3926 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3927 bug. (thanks to Matthew Danish)
3928 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3930 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3931 arguments are lexically rebound. (thanks to Gerd Moellmann and
3933 * fixed bug 194: error messages are now more informative when there
3934 is no primary method applicable in a call to a generic
3935 function. (thanks to Gerd Moellmann)
3936 * fixed bug in command line argument checking (thanks to Julian
3938 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3939 (thanks to Matthew Danish)
3940 * incremented fasl file version number, because of the
3941 SXHASH-related changes in the layout of CLOS data structures
3943 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3944 * minor incompatible change: The runtime (the Unix executable named
3945 "sbcl") is now much pickier about the .core files it will load.
3946 Essentially it now requires .core files to descend from the same
3947 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3948 as the runtime does. (The intent is to prevent the crashes which
3949 can occur, and which can even be reported as mysterious failures,
3950 when people patch the sources or change the build parameters
3951 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3952 sbcl and .core files.)
3953 * fixed bug: VALUES-LIST is no longer optimized away.
3954 * fixed bug 142: The FFI conversion of C string values to Lisp
3955 string values no longer conses excessively. (thanks to Nathan
3956 Froyd porting Raymond Toy's fix to CMU CL)
3957 * began to systematize and improve MOP conformance in PCL (thanks to
3958 Nathan Froyd, Gerd Moellman and Pierre Mai):
3959 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3961 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3962 ** FINALIZE-INHERITANCE is now called on class finalization;
3963 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3964 argument precedence order.
3965 * fixed bug 202: The compiler no longer fails on functions whose
3966 derived types contradict their declared type.
3967 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3968 so it can be non-toplevel.
3969 * The fasl file version number has changed (because of the new
3970 implementation of DEFMACRO).
3971 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3972 safe code, that any length requirement by their type-specifier
3973 argument is valid. The exceptions to this are described in bug
3975 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3976 functions now check the types of their inputs as required by ANSI.
3977 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3978 introduced symbol is DECLAREd to be SPECIAL.
3979 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3980 * fixed bug: :COUNT argument to sequence functions may be negative
3981 * fixed bug: body of DO-SYMBOLS may contain declarations
3982 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3983 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3984 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3985 symbol macro only once
3986 * fixed printing of call frame when argument list is unavailable
3987 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3988 * compiler no longer signals WARNING on unknown keyword
3991 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3992 * A beta-quality port to the mips architecture running Linux,
3993 based on the old CMUCL backend, has been made. It has been tested
3994 on a big-endian kernel, and works sufficiently well to be able to
3995 rebuild itself; it has not been tested in little-endian mode.
3996 * fixed an inconsistency between gencgc.c and purify.c which made
3997 dumping/loading .core files unreliable
3998 * fixed bug 120a: The compiler now deals correctly with IFs where
3999 the consequent is the same as the alternative, instead of
4000 misderiving the return type. (thanks to Alexey Dejneka)
4001 * fixed bug 113: Logical pathnames are now dumpable (the logical
4002 host is resolved at load-time, throwing an error if it is not
4004 * fixed bug 174: FORMAT's error message is slightly clearer when a
4005 non-printing character is used in a format directive.
4006 * fixed several bugs in compiler checking of type declarations, i.e.
4007 violations of the Python "declarations are assertions" principle
4008 (thanks to Alexey Dejneka)
4009 * fixed several bugs in PCL's error checking (thanks to Gerd
4011 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4013 * fixed bug in compilation of functions as first class values
4014 (thanks to Antonio Martinez-Shotton)
4015 * The compiler's handling TYPE-ERRORs which it can prove will
4016 inevitably happen at runtime has been cleaned up and corrected
4017 in several ways. (thanks to Alexey Dejneka)
4018 * improved argument type checking for various basic arithmetic
4019 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4020 lavished on them in the past that they can be compiled in many
4021 ways in different special cases
4022 * fixed bug 181: compiler checks validity of user supplied type
4024 * cleaned up code flushing in optimization: Function calls which
4025 should signal errors for safety purposes (e.g. which ANSI says
4026 should signal errors when their arguments are of incorrect type)
4027 are no longer optimized away.
4028 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4029 * incremented fasl file version number, because changes in the
4030 implementation of sequence functions like COERCE caused
4031 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4032 in old inline expansions) to become undefined. (Actually these
4033 changes were later undone, so we might very well be binary
4034 compatible with 0.7.7 after all, but leaving the version number
4035 incremented seemed like the simplest and most conservative
4038 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4039 * An alpha-quality port to the parisc architecture running Linux,
4040 based on the old CMUCL backend, has been made. This, even more so
4041 than the other backends, should be considered still a work in
4042 progress; known problems include that the Linux kernel in 64-bit
4043 mode does not propagate the correct sigcontext structure to
4044 userspace, and consequently SBCL on a parisc64 kernel will not
4046 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4047 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4048 suppressed.) Also now that the compiler is looking at declarations
4049 in the environment, it checks optimization declarations as well,
4050 and suppresses inlining when (> DEBUG SPEED).
4051 * More fixes have been made to treatment of floating point exception
4052 treatment and other Unix signals. In particular, floating point
4053 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4054 * The detection and handling of control stack exhaustion (infinite
4055 or very deeply nested recursion) has changed. Stack exhaustion
4056 detection is now done by write-protecting pages at the OS level
4057 and applies at all optimization settings; when found, a
4058 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4059 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4060 be caught using IGNORE-ERRORS.
4061 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4062 correctly when transforming recursive LABELS functions to LETs.
4063 (thanks to Alexey Dejneka)
4064 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4065 that are names of constants or global variables.
4066 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4067 alien routines with docstrings.
4068 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4069 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4071 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4072 (thanks to Eric Marsden)
4073 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4074 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4075 * Bug fix: The SPARC backend can now compile functions involving
4076 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4077 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4078 to a functions expecting a PATHNAME-DESIGNATOR.
4079 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4080 lambda lists. (thanks to Alexey Dejneka)
4081 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4082 functions so that EXPORTing the name of the class doesn't cause
4083 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4084 to Antonio Martinez for reporting this)
4085 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4086 constant-folded without failing an assertion. (thanks to Einar
4087 Floystad Dorum for reporting this)
4088 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4089 types are now dealt with more correctly by the compiler.
4090 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4091 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4092 behaviour analogous to RENAME-FILE. This puts its behaviour more
4093 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4095 * The fasl file version number has changed again. (because of the
4096 bug fix involving the names of PCL MAKE-INSTANCE functions)
4098 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4099 * bug fix: Floating point exceptions are treated much more
4100 consistently on the x86/Linux and PPC/Linux platforms.
4101 * Array initialization with :INITIAL-ELEMENT is now much faster for
4102 cases when the compiler cannot open code the array creation, but
4103 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4104 array accesses have also seen a speed increase.
4105 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4106 specified. (This was at the root of some bad interactions between
4107 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4109 * bug fix: Internal error arguments for undefined functions are now
4110 computed correctly on the PPC/Linux platform.
4111 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4112 Raymond Toy's patch for CMU CL)
4113 * Support for the Solaris 9 operating environment has been included
4114 (thanks to Daniel Merritt)
4115 * A very ugly but hopefully complete draft of the missing FFI chapter
4116 of the manual has been created by reformatting the corresponding
4117 CMU CL manual chapter into (currently very ugly and incoherent)
4118 DocBook and bringing it up to date for SBCL behavior. Thus, the
4119 manual is now essentially complete, at least by my extreme
4120 once-and-only-once standards, whereby it's acceptable to refer to
4121 the doc strings of SB-EXT functions as the primary documentation.
4122 * The fasl file version number has changed again, due to cleanup of
4123 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4124 is no longer a static symbol.)
4126 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4127 * SBCL now builds with OpenMCL (version 0.12) as the
4128 cross-compilation host; also, more progress has been made toward
4129 bootstrapping under CLISP.
4130 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4132 * bug 158 fixed: The compiler can now deal with integer loop
4133 increments different from 1; fixing this turned out also to fix
4135 * bug 169 fixed: no more bogus warnings about using lexical bindings
4136 despite the presence of perfectly good SPECIAL declarations (thanks
4137 to David Lichteblau)
4138 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4139 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4140 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4142 * bug 180 fixed: Method combination specifications no longer ignore
4143 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4144 * bug fix: Structure type predicate functions now check their argument
4145 count as they should.
4146 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4147 correctly. (thanks to Pierre Mai)
4148 * minor incompatible change: The --noprogrammer option is deprecated
4149 in favor of the new --disable-debugger option, which is very similar.
4150 (The major difference is that it takes effect at a slightly different
4151 time at startup, causing handling of errors in --sysinit and
4152 --userinit files will be affected differently.) The
4153 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4154 been added to allow this functionality to be controlled from ordinary
4155 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4156 maintainers, who might want to run non-interactive scripts to
4157 build SBCL cores which will later be used interactively.)
4158 * minor incompatible change: The LOAD function no longer, when given
4159 a wild pathname to load, loads all files matching that pathname.
4160 Instead, an error of type FILE-ERROR is signalled.
4162 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4163 * bug 147 fixed: The compiler preserves its block link/count
4164 invariants more correctly now so that it doesn't crash. (thanks
4166 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4168 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4169 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4170 no-value-for-this-character as NIL (as specified by ANSI).
4171 * HOST-NAMESTRING on physical pathnames now returns a string that is
4172 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4173 (thanks to Christophe Rhodes)
4174 * The Alpha port handles icache flushing more correctly. (thanks to
4176 * More progress has been made toward bootstrapping under CLISP. (thanks
4177 to Christophe Rhodes)
4178 * The fasl file format has changed again, because dynamic loading
4179 on OpenBSD (which has non-ELF object files) motivated some cleanups
4180 in the way that foreign symbols are transformed and passed around.
4181 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4182 is no longer treated as whitespace by the reader, but instead as
4183 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4184 |A
\7fB|, instead of A as it used to.
4186 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4187 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4188 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4189 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4190 this as of 0.7.1.45, but was left out of the previous news section
4191 (thanks to Dan Barlow)
4192 * SBCL now runs on the Solaris operating system on SPARC architectures
4193 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4194 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4195 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4196 * SPARC backend cleanups, allowing builds of cores optimized for V8
4197 and V9 SPARCS, and also emission of code targeted to a particular
4198 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4200 * SBCL is closer to bootstrapping under CLISP, thanks to various
4201 fixes by Christophe Rhodes.
4202 * The fasl file format has changed again, to allow the compiler's
4203 INFO database to support symbol macros.
4204 * The user manual (in doc/) is formatted into HTML more nicely.
4205 (thanks to coreythomas)
4206 * The system is smarter about SUBTYPEP relationships, especially
4207 those involving NOT types (including types such as ATOM which are
4208 represented internally using NOT types). Thus SUBTYPEP is less
4209 likely to return (VALUES NIL NIL) in general, and in particular
4210 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4212 * The fasl file format has changed again, because the internal
4213 representation of types now includes a new slot to support the new
4214 SUBTYPEP-of-NOT-types logic.
4215 * (not a change in the main branch of SBCL, but a related prototype
4216 which can hopefully be merged into the main branch of SBCL in the
4217 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4218 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4219 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4220 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4221 dispatch macro character combinations. (thanks to Alexey Dejneka)
4222 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4223 that superficially look like logical namestrings correctly.
4224 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4226 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4227 default supplied-p) for &optional and &key arguments. (thanks to
4230 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4231 * incompatible change: The compiler is now less aggressive about
4232 tail call optimization, doing it only when (> SPACE DEBUG) or
4233 (> SPEED DEBUG). (This is an incompatible change because there are
4234 programs which relied on the old CMU-CL-style behavior to optimize
4235 away their unbounded recursion which will now die of stack overflow.)
4236 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4237 for non-GENCGC systems has been increased to 20M (since that
4238 seems much closer to the likely performance optimum for modern
4239 systems than the old 4M value was)
4240 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4241 and *DEBUG-PRINT-LEVEL*
4242 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4243 of CMU CL's support for SPARC, and various endianness and other
4244 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4245 * new syntactic sugar for the Unix command line: --load foo.bar is now
4246 an alternate notation for --eval '(load "foo.bar")'.
4248 ** The system now detects stack overflow and handles it gracefully,
4249 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4250 optimization settings. (This is a good thing in general, and
4251 its introduction in this version should be particularly timely
4252 for anyone whose code fails because of suppression of tail
4254 ** The system now hunts for the C variable "environ" in a more
4255 devious way, to avoid segfaults when the C library version differs
4256 between compile time and run time. (thanks to Christophe Rhodes)
4257 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4258 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4259 ** The compiler no longer issues bogus style warnings for undefined
4260 classes in the same source file as the DEFCLASSes which defined
4261 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4263 ** fixes in CONDITION class precedence list for undefined function
4264 errors (thanks to Alexei Dejneka)
4265 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4266 correctly. (thanks to Dan Barlow)
4267 ** portability fixes aiming at bootstrapping under CLISP (thanks
4268 to Dave McDonald and Christophe Rhodes)
4269 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4270 ** fixes in type translation and and type inference (thanks to
4272 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4273 ** various fixes in the new ports (thanks to Dan Barlow)
4274 * several changes related to debugging:
4275 ** suppression of tail recursion, as noted above
4276 ** stack overflow detection, as noted above
4277 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4278 is now the default. (For some time encapsulation has been more
4279 reliable than the breakpoint-based :ENCAPSULATE NIL
4280 implementation, at least on X86 systems; and I just noticed that
4281 encapsulation also seems closer to the spirit of the ANSI
4284 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4286 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4287 up properly again. (There was a packaging bug in 0.7.0 which
4288 left their definitions in SB-SYS::LOAD-FOREIGN and
4289 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4290 vital for most things which interface to C-level interfaces,
4291 like extensions working with sockets or databases or
4292 Perl-compatible regexes or whatever, and the need to fix
4293 this bug is the main reason that 0.7.1 was released so
4295 ** DEFGENERIC is now choosier about the methods it redefines, so that
4296 reLOADing a previously-LOADed file containing DEFGENERICs does
4297 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4298 cycle now works as it should. (thanks to Alexey Dejneka)
4299 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4300 fixed by Christophe Rhodes. (He actually submitted this patch
4301 months ago, and I delayed until after 0.7.0.)
4302 ** Bug 111 (internal compiler confusion about runtime checks on
4303 FUNCTION types) was fixed by Alexey Dejneka.
4304 * Some internal cleanups (getting rid of variables which aren't
4305 needed now that the byte interpreter is gone) caused the fasl
4306 file format number to change again.
4308 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4309 * major incompatible change: The default fasl file extension, i.e. the
4310 default extension for files produced by COMPILE-FILE, has changed
4311 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4313 ** There are many changes in the implementation of the compiler.
4314 SBCL is now essentially a compiler-only implementation of ANSI
4315 Common Lisp. EVAL still "interprets" a few special cases, but
4316 almost all the interesting cases are handled by creating
4317 a LAMBDA expression, calling COMPILE on it, then calling
4318 FUNCALL on the result.
4319 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4320 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4321 Since the code is newer, there might still be some new bugs
4322 (though not as many as before Martin Atzmueller's fixes:-). But
4323 the new code is substantially simpler and clearer, and hopefully
4324 any remaining bugs will be simpler, less fundamental, and more
4325 fixable then the bugs in the old code.
4326 ** The revised compiler is still a little unsteady on its feet.
4328 *** The debugging information it produces (particularly the names
4329 of FUNCTION objects) is sometimes much less useful than what
4330 the old compiler produced.
4331 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4332 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4333 within a MACROLET) has been temporarily weakened.
4334 ** There are new compiler optimizations for various functions:
4335 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4336 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4337 *** the math functions TRUNCATE, FLOOR, and CEILING
4338 *** the function-of-all-trades COERCE
4339 Mostly these should be transparent, but there's one
4340 potentially-annoying problem (bug 117): when the compiler
4341 inline-expands a function and does type analysis on the result,
4342 it can create control paths which have type mismatches, and
4343 when it can't prove that those control paths aren't taken,
4344 it will issue WARNINGs about the type mismatches. This is
4345 a particular problem in practice for the new sequence functions.
4346 It's not clear how this should be fixed, and for now, a
4347 workaround is given in the entry for 117 in the BUGS file.
4348 ** (Because of the interaction between the two previous items --
4349 occasional inlining problems and new inline expansions -- some
4350 of the new sequence function optimizations won't really kick in
4351 completely until debugging information, and then inlining, are
4352 straightened out in some future version.)
4353 * minor incompatible changes:
4354 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4355 DIRECTORY no longer implicitly promotes NIL slots of its
4356 pathname argument to :WILD. In particular, when you ask for the
4357 contents of a directory (which you used to be able to do without
4358 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4359 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4360 ** changes in behavior that ANSI explicitly defines to be
4361 implementation dependent:
4362 *** The new compiler-only implementation still conforms with ANSI,
4363 but acts a little different than before. Besides the obvious
4364 changes in performance tradeoffs (that the cost per form passed
4365 to EVAL has gone up, and the cost per form executed by EVAL
4366 has gone down), the behavior of the system changes a little
4367 because there are no longer any interpreted function objects.
4368 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4369 e.g. doing COMPILE on the output of interactive DEFUN is
4371 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4373 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4374 has changed from (:CL) to NIL.
4375 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4376 e.g. #\Newline and #\Tab, don't have names specified in the
4377 ANSI Common Lisp standard, is now based on their ASCII symbolic
4378 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4379 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4380 are no longer used for output.
4381 ** changes in internal implementation constants:
4382 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4383 4 million. (If your application spends a lot of time GCing and
4384 you have a lot of RAM, you might want to experiment with
4385 increasing it even more.)
4386 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4387 However, almost all old code should still continue to work without
4388 immediate update, as SB-C-CALL is now a (deprecated) nickname
4390 ** Old operator names in the style DEF-FOO are now deprecated in
4391 favor of new corresponding names DEFINE-FOO, for consistency with
4392 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4393 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4394 internal symbols, but a few supported extensions like
4395 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4396 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4397 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4398 etc. as you get deeper into recursive calls to the debugger
4399 command loop, instead of the old "5]", "5]]", "5]]]"
4400 sequence. (I was motivated to do this when squabbles between
4401 ILISP and SBCL left me very deeply nested in the debugger. In the
4402 short term, this change will probably provoke more ILISP/SBCL
4403 squabbles, but hopefully it will be an improvement in the long run.)
4404 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4405 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4406 function, since declaiming return types involving aliens is
4407 (1) annoyingly messy to do by hand and (2) vital to efficient
4408 compilation of code which calls such functions.
4409 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4410 longer reexported by the SB-EXT package. They're solely useful
4411 for alien code, so it seems more logical that you should get
4412 them from the SB-ALIEN package, not in SB-EXT.
4413 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4414 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4415 features. Instead, the code that they used to control is always
4416 built into the system.
4417 * many other bug fixes
4418 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4419 advantage of the new EVAL-WHEN stuff and to clean them up in
4420 general, and they are now more ANSI-compliant in a number of
4421 ways. Martin Atzmueller is responsible for a lot of this.
4422 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4424 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4425 *** correct ERROR type for various file operations
4426 *** some fixes for Lisp streams
4427 *** DEFMETHOD syntax checking
4428 *** changing old weird representation of debug information as
4429 strings (which, among their other deficiencies, don't transform
4430 correctly when you rename packages, and don't change their
4431 print representation when you change things like *PACKAGE*
4432 and *PRINT-LENGTH*) to symbols and lists of symbols
4433 He also made several improvements and fixed several bugs in DESCRIBE.
4434 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4436 *** misbehavior of WRITE-STRING/WRITE-LINE
4437 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4438 and several other LOOP problems as well
4439 *** DIRECTORY when similar filenames are present
4440 *** DEFGENERIC with :METHOD options
4441 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4442 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4443 *** argument ordering in FIND with :TEST option
4444 *** mishandled package designator argument in APROPOS-LIST
4445 *** various problems in the backquote readmacro
4446 *** a bug in APROPOS
4447 *** probably some others that I'm not describing very well here,
4448 since the CVS log documents them by reference to sbcl-devel
4449 messages, and the SourceForge archives aren't working well.:-(
4450 ** Dan Barlow improved the Alpha port (and is making progress on the
4451 PPC port, for those of you who think different).
4452 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4453 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4454 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4455 continues to work on the SPARC port (for those of you in a position
4456 to look down upon our little PC-compatible boxes from a great height).
4457 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4458 and uses that copy, rather than the current dynamic value, when
4459 it's trying to decide whether to truncate output. Thus e.g.
4460 (let ((*print-lines* 50))
4461 (pprint-logical-block (stream nil)
4463 (let ((*print-lines* 8))
4464 (print (aref possiblybigthings i) stream)))))
4465 should now truncate the logical block only at 50 lines, instead of
4466 often truncating it at 8 lines, as it did before.
4467 * The doc/cmucl/ directory, containing old CMU CL documentation
4468 from the time of the fork, is no longer part of the base system.
4469 SourceForge has shut down its anonymous FTP service, and with it
4470 my original plan for distributing the old CMU CL documentation
4471 there. For now, if you need these files you can download an old
4472 SBCL source release and extract them from it.
4473 * The fasl file version number changed again, for dozens of reasons,
4474 some of which are apparent above.
4476 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4477 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4478 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4479 patch, so that DISASSEMBLE output is much nicer.
4480 * The code in the SB-PROFILE package now seems reasonably stable.
4481 I still haven't decided what the final interface should look like
4482 (I'd like PROFILE to interact cleanly with TRACE, since both
4483 facilities use function encapsulation) but if you have a need
4484 for profiling now, you can probably use it successfully with
4485 the current CMU-CL-style interface.
4486 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4487 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4488 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4489 link now returns the dangling link itself, and for similar
4490 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4491 link itself. (In these cases the old code signalled an error and
4492 looped endlessly, respectively.) Thus, DIRECTORY now works even
4493 in the presence of dangling and cyclic symbolic links.
4494 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4495 is now a supported extension again, since the consensus on
4496 sbcl-devel was that it can be useful for ordinary development
4497 work, not just for debugging SBCL itself.
4498 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4499 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4500 that currently-defined functions might be redefined later with
4501 different return types.
4502 * Hash tables can be printed readably, as inspired by CMU CL code
4503 of Eric Marsden and SBCL code of Martin Atzmueller.
4504 * better error handling in CLOS method combination, thanks to
4505 Martin Atzmueller porting Pierre Mai's CMU CL patches
4506 * more overflow fixes for >16Mbyte I/O buffers
4507 * A bug in READ has been fixed, so that now a single Ctrl-D
4508 character suffices to cause end-of-file on character streams.
4509 In particular, now you only need one Ctrl-D at the command
4510 line (not two) to exit SBCL.
4511 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4513 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4514 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4515 does the right thing.
4516 * The implementation of some type tests, especially for CONDITION
4517 types, is now tidier and maybe faster, due to CMU CL code
4518 originally by Douglas Crosher, ported by Martin Atzmueller.
4519 * Some math functions have been fixed, and there are new
4520 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4521 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4522 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4523 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4524 likely to be built into sbcl-0.7.0.)
4525 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4526 CL, ported to SBCL by Martin Atzmueller)
4527 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4528 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4529 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4530 * There's a new slam.sh hack to shorten the edit/compile/debug
4531 cycle for low-level changes to SBCL itself, and a new
4532 :SB-AFTER-XC-CORE target feature to control the generation of
4533 the after-xc.core file needed by slam.sh.
4534 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4535 COMPILE-FILE is no longer supported, so that now every function
4536 gets an entry point, so that block compilation looks a little
4537 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4538 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4539 returns the number of bytes consed since the system started,
4540 rather than the number consed since the first time the function
4541 was called. (The new definition parallels ANSI functions like
4542 CL:GET-INTERNAL-RUN-TIME.)
4543 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4544 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4545 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4546 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4547 * Fasl file version numbers are now independent of the target CPU,
4548 since historically most system changes which required version
4549 number changes have affected all CPUs equally. Similarly,
4550 the byte fasl file version is now equal to the ordinary
4553 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4554 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4555 is no longer recognized. I apologize for this, because it was
4556 listed in SB-EXT as a supported extension, but I found that
4557 its existing behavior was poorly specified, as well as incorrectly
4558 specified, and it looked like too much of a mess to straighten it
4559 out. I have enough on my hands trying to get ANSI stuff to work..
4560 * many patches ported from CMU CL by Martin Atzmueller, with
4561 half a dozen bug fixes in pretty-printing and the debugger, and
4562 half a dozen others elsewhere
4563 * fixed bug 13: Floating point infinities are now supported again.
4564 They might still be a little bit flaky, but thanks to bug reports
4565 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4566 as flaky as they were.
4567 * The --noprogrammer command line option is now supported. (Its
4568 behavior is slightly different in detail from what the old man
4569 page claimed it would do, but it's still appropriate under the
4570 same circumstances that the man page talks about.)
4571 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4572 are now supported, and enabled by default. Thus, the compiler can
4573 handle many floating point and complex operations much less
4574 inefficiently. (Thus e.g. you can implement a complex FFT
4576 * The compiler now detects type mismatches between DECLAIM FTYPE
4577 and DEFUN better, and implements CHECK-TYPE more correctly, and
4578 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4579 thanks to patches from Martin Atzmueller.
4580 * various fixes to make the cross-compiler more portable to
4581 ANSI-conforming-but-different cross-compilation hosts (notably
4582 Lispworks for Windows, following bug reports from Arthur Lemmens)
4583 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4584 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4585 fixed thanks to Pierre Mai's CMU CL patches.
4586 * fixes to keep the system from overflowing internal counters when
4587 it tries to use i/o buffers larger than 16M bytes
4588 * fixed bug 45a: Various internal functions required to support
4589 complex special functions have been merged from CMU CL sources.
4590 (When I was first setting up SBCL, I misunderstood a compile-time
4591 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4592 * improved support for type intersection and union, fixing bug 12
4593 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4594 more obscure bugs as well
4595 * some steps toward byte-compiling non-performance-critical
4596 parts of the system, courtesy of patches from Martin Atzmueller
4597 * Christophe Rhodes has made some debian packages of sbcl at
4598 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4599 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4600 stable, but are nonetheless usable. When he's ready, I'd be happy
4601 to add them to the SourceForge "File Releases" section. (And if
4602 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4603 * new fasl file format version number (because of changes in
4604 internal representation of (OR ..) types to accommodate the new
4605 support for (AND ..) types, among other things)
4607 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4608 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4610 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4612 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4613 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4614 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4615 * DESCRIBE now works on structure objects again.
4616 * Most function call argument type mismatches are now handled as
4617 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4618 know whether the function will be redefined before the call is
4619 executed. (The compiler could flag local calls with full WARNINGs,
4620 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4621 it doesn't keep track of enough information to know whether calls
4622 are local in this sense.)
4623 * Compiler output is now more verbose, with messages truncated
4624 later than before. (There should be some supported way for users
4625 to override the default verbosity, but I haven't decided how to
4626 provide it yet, so this behavior is still controlled by the internal
4627 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4628 src/compiler/ir1util.lisp.)
4629 * Fasl file format version numbers have increased again, because
4630 support for the Gray streams extension changes the layout of the
4631 system's STREAM objects.
4632 * The Gray subclassable streams extension now works, thanks to a
4633 patch from Martin Atzmueller.
4634 * The full LOAD-FOREIGN extension (not just the primitive
4635 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4636 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4637 but like most other programs, it defaults to copying the Unix
4638 environment from the original process instead of starting the
4639 new process in an empty environment.
4640 * Extensions which manipulate the Unix environment now support
4641 an :ENVIRONMENT keyword option which doesn't smash case or
4642 do other bad things. The CMU-CL-style :ENV option is retained
4643 for porting convenience.
4644 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4645 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4647 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4649 * A patch from Martin Atzmueller seems to have solved the SIGINT
4650 problem, and as far as we know, signal-handling now works cleanly.
4651 (If you find any new bugs, please report them!)
4652 * The system no longer defaults Lisp source file names to types
4653 ".l", ".cl", or ".lsp", but only to ".lisp".
4654 * The compiler no longer uses special default file extensions for
4655 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4656 seems to expect a single default extension for all compiled code,
4657 and there's no compelling reason to try to stretch the standard
4658 to allow two different extensions.) Instead, byte-compiled files
4659 default to the same extension as native-compiled files.
4660 * Fasl file format version numbers have increased again, because
4661 a rearrangement of internal implementation packages made some
4662 dumped symbols in old fasl files unreadable in new cores.
4663 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4664 many fewer weird special cases.
4665 * Bug #17 (differing COMPILE-FILE behavior between logical and
4666 physical pathnames) has been fixed, and some related misbehavior too,
4667 thanks to a patch from Martin Atzmueller.
4668 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4669 by Tim Moore, ported to SBCL by Martin Atzmueller.
4670 * Martin Atzmueller fixed several filesystem-related problems,
4671 including bug #36, in part by porting CMU CL patches, which were
4672 written in part by Paul Werkowski.
4673 * More compiler warnings in src/runtime/ are gone, thanks to
4674 more patches from Martin Atzmueller.
4675 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4678 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4680 * DESCRIBE now works on CONDITION objects.
4681 * The debugger now handles errors which arise when trying to print
4682 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4684 * The build system now uses an additional file, customize-target-features.lisp,
4685 to allow local modifications to the target *FEATURES* list. (The point of
4686 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4687 debugging features enabled, without having to worry about propagating it
4688 into everyone's system when I do a "cvs update".) When no
4689 customize-target-features.lisp file exists, the target *FEATURES* list
4690 should be constructed the same way as before.
4691 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4692 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4693 warn about behavior which is undefined under the ANSI spec. Note: This
4694 is specified by ANSI, but it's not very popular with programmers.
4695 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4696 macro in the SBCL sources for an example of a workaround which you
4697 might use to make portable ANSI-standard code which does what you want.
4698 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4699 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4700 when it's used as a non-toplevel form. (This is required in order
4701 to implement the DEFCONSTANT-EQX macro.)
4702 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4703 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4704 funny things, due to bugs in the implementation of EVAL-WHEN
4705 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4706 non-toplevel DEFCONSTANTs are uncommon.)
4707 * The core file version number and fasl file version number have been
4708 incremented, because the old noncompliant DEFCONSTANT behavior involved
4709 calling functions which no longer exist, and because I also took the
4710 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4711 * fixed bug 1 (error handling before read-eval-print loop starts), and
4712 redid debugger restarts and related debugger commands somewhat while
4714 ** The QUIT debugger command is gone, since it did something
4715 rather different than the SB-EXT:QUIT command, and since it never
4716 worked properly outside the main toplevel read/eval/print loop.
4717 Invoking the new TOPLEVEL restart provides the same functionality.
4718 ** The GO debugger command is also gone, since you can just invoke
4719 the CONTINUE restart directly instead.
4720 ** The TOP debugger command is also gone, since it's redundant with the
4721 FRAME 0 command, and since it interfered with abbreviations for the
4723 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4725 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4726 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4727 some porting work by Martin Atzmueller)
4728 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4729 with a boatload of patches which he ported to SBCL. Now that those
4731 ** The system tries to make sure that its low-priority messages
4732 are prefixed by semicolons, to help people who like to use
4733 syntax highlighting in their ILISP buffer. (This patch
4734 was originally due to Raymond Toy.)
4735 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4736 patches originally written by Raymond Toy.
4737 ** The compiler understands coercion between single-value and
4738 multiple-VALUES type expressions better, getting rid of some very
4739 weird behavior, thanks to patches originally by Robert MacLachlan
4740 and Douglas Crosher.
4741 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4742 lambda lists, thanks to a patch originally by Pierre Mai.
4743 ** The system no longer bogusly warns about "abbreviated type
4745 ** The compiler gets less confused by inlining and RETURN-FROM,
4746 thanks to some patches originally by Tim Moore.
4747 ** The system no longer hangs when dumping circular lists to fasl
4748 files, thanks to a patch originally from Douglas Crosher.
4749 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4750 undefined function error.
4751 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4752 in structure slot initforms) for now, documented workaround instead:-|
4753 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4754 * fixed bug 5: added stubs for various Gray stream functions called
4755 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4756 installed, at least appropriate type errors are generated
4757 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4758 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4759 consistently in DEFMETHOD forms.
4760 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4761 it doesn't seem to affect SBCL after all
4762 * The C runtime system now builds with better optimization and many
4763 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4765 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4767 * The system is now under CVS at SourceForge (instead of the
4768 CVS repository on my home machine).
4769 * The new signal handling code has been tweaked to treat register
4770 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4771 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4772 downstream, e.g. in debug-int.lisp, has implicit dependencies
4773 on the unsignedness of integer representation of machine words,
4774 and that caused the system to bomb out with infinite regress
4775 when trying to recover from type errors involving signed values,
4776 e.g. (BUTLAST '(1 2 3) -1).)
4777 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4778 (This was one of the bugs Peter Van Eynde reported back in July.)
4779 * The system now uses code inspired by Colin Walters' O(N)
4780 implementation of MAP (from the cmucl-imp@cons.org mailing
4781 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4782 inline the MAP operation, and there is more than one
4783 sequence argument to the MAP call (so that it can't just
4784 do ETYPECASE once and for all based on the type of the
4785 single sequence argument). (The old non-inline implementation
4786 of the general M-argument sequence-of-length-N case required
4787 O(M*N*N) time when any of the sequence arguments were LISTs.)
4788 * The QUIT :UNIX-CODE keyword argument has been renamed to
4789 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4790 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4792 * Raymond Wiker's patches to port dynamic loading from Linux to
4793 FreeBSD have been added.
4794 * The BUGS file is now more nearly up to date, thanks in large part
4795 to Martin Atzmueller's review of it.
4796 * The debugger now flushes standard output streams before it begins
4797 its output ("debugger invoked" and so forth).
4798 * The core version number and fasl file version number have both
4799 been incremented, because of incompatible changes in the layout
4801 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4802 used to not be called for a saved Lisp image.)
4803 * Martin Atzmueller's version of a patch to fix a compiler crash,
4804 as posted on sbcl-devel 13 September 2000, has been installed.
4805 * Instead of installing Martin Atzmueller's patch for the
4806 compiler transform for SUBSEQ, I deleted the compiler transform,
4807 and transforms for some similar consing operations.
4808 * A bug in signal handling which kept TRACE from working on OpenBSD
4810 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4811 away by constant folding
4812 * The system now defines its address space constants in one place
4813 (in the Lisp sources), and propagates them automatically elsewhere
4814 (through GENESIS and the sbcl.h file). Therefore, patching the
4815 address map is less unnecessarily tedious and error-prone. The
4816 Lisp names of address space constants have also been systematized.
4817 * CVS tags like dollar-Header-dollar have been removed from
4818 the sources, because they have never saved me trouble and
4819 they've been source of trouble working with patches and other
4820 diff-related operations.
4821 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4822 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4824 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4826 * The system has been ported to OpenBSD.
4827 * The system now compiles with a simple "sh make.sh" on the systems
4828 that it's supported on. I.e., now you no longer need to tweak
4829 text in the target-features.lisp-expr and symlinks in src/runtime/
4830 by hand, the make.sh takes care of it for you.
4831 * The system is no longer so grossly inefficient when compiling code
4832 involving vectors implemented as general (not simple) vectors (VECTOR T),
4833 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4834 which dares to use the various sequence functions on non-simple
4835 vectors, takes less of a performance hit.
4836 * There is now a primitive type predicate VECTOR-T-P
4837 to test for the (VECTOR T) type, so that e.g.
4838 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4839 can now be compiled with some semblance of efficiency. (The old code
4840 turned the type declaration into a full call to %TYPEP at runtime!)
4841 * AREF on (VECTOR T) is still not fast, since it's still compiled
4842 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4843 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4844 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4845 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4846 without making full calls to SUBTYPEP at runtime.
4847 (Some analogous efficiency issues for non-simple vectors specialized to
4848 element types other than T, or for non-simple multidimensional arrays,
4849 have not been addressed. They could almost certainly be handled the
4850 same way if anyone is motivated to do so.)
4851 * The changes in array handling break binary compatibility, so
4852 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4853 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4854 instead of (VALUES T T).
4855 * By following the instructions that Dan Barlow posted to sbcl-devel
4856 on 2 July 2000, I was able to enable primitive dynamic object
4857 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4858 functionality is not implemented (since it calls ld to resolve
4859 library references automatically, requiring RUN-PROGRAM for its
4860 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4861 try to resolve library references) is now supported.
4862 * The system now flushes the standard output streams when it terminates,
4863 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4864 them at several other probably-convenient times, e.g. in each pass of
4865 the toplevel read-eval-print loop, and after evaluating a form given
4866 as an "--eval" command-line option. (These changes were motivated by a
4867 discussion of stream flushing issues on cmucl-imp in August 2000.)
4868 * The source transform for TYPEP of array types no longer assumes
4869 that an array whose element type is a not-yet-defined type
4870 is implemented as an array of T, but instead punts, so that the
4871 type will be interpreted at runtime.
4872 * There is now some support for cross-compiling in make.sh: each of
4873 the phases of make.sh has its own script. (This should be transparent
4874 to people doing ordinary, non-cross-compile builds.)
4875 * Since my laptop doesn't have hundreds of megabytes of memory like
4876 my desktop machine, I became more motivated to do some items on
4877 my to-do list in order to reduce the size of the system a little:
4878 ** Arrange for various needed-only-at-cold-init things to be
4879 uninterned after cold init. To support this, those things have
4880 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4881 symbols with such names are now uninterned after cold init).
4882 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4883 fasl files for cold load.
4884 ** Remove the old compiler structure pooling code (which used to
4885 be conditional on the target feature :SB-ALLOC) completely.
4886 ** Redo the representation of some data in cold init to be more compact.
4887 (I also looked into supporting byte compiled code at bootstrap time,
4888 which would probably reduce the size of the system a lot, but that
4889 looked too complicated, so I punted for now.)
4890 * The maximum signal nesting depth in the src/runtime/ support code has
4891 been reduced from 4096 to 256. (I don't know any reason for the very
4892 large old value. If the new smaller value turns out to break something,
4893 I'll probably just bump it back up.)
4894 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4896 * Many, many bugs reported by Peter Van Eynde have been added to
4897 the BUGS list; some have even been fixed.
4898 * While enabling dynamic object file loading, I tried to make the
4899 code easier to understand, renaming various functions and variables
4900 with less ambiguous names, and changing some function calling
4901 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4902 * While trying to figure out how to do the OpenBSD port, I tried to
4903 clean up some of the code in src/runtime/. In particular, I dropped
4904 support for non-POSIX signal handling, added various comments,
4905 tweaked the code to reduce the number of compilation warnings, and
4906 renamed some files to increase consistency.
4907 * To support the new automatic configuration functionality in make.sh,
4908 the source file target-features.lisp-expr has been replaced with the
4909 source file base-target-features.lisp-expr and the machine-generated
4910 file local-target-features.lisp-expr.
4911 * fixed a stupid quoting error in make.sh so that using CMU CL
4912 "lisp -batch" as cross-compilation host works again
4914 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4916 * DESCRIBE no longer tries to call itself recursively to describe
4917 bound/fbound values, so that it no longer fails on symbols which are
4918 bound to themselves (like keywords, T, and NIL).
4919 * DESCRIBE now works on generic functions.
4920 * The printer now prints less-screwed-up representations of closures
4921 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4922 * A private symbol is used instead of the :EMPTY keyword previously
4923 used to mark empty slots in hash tables. Thus
4924 (DEFVAR *HT* (MAKE-HASH-TABLE))
4925 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4926 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4927 now does what ANSI says that it should. (You can still get
4928 similar noncompliant behavior if bang on the hash table
4929 implementation with all the symbols you get back from
4930 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4931 This breaks binary compatibility, since tests for equality to
4932 :EMPTY are wired into things like the macroexpansion of
4933 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4935 * There's now a minimal placeholder implementation for CL:STEP,
4936 as required by ANSI.
4937 * An obscure bug in the interaction of the normal compiler, the byte
4938 compiler, inlining, and structure predicates has been patched
4939 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4940 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4942 * Missing ordinary arguments in a macro call are now detected even
4943 when the macro lambda list contains &KEY or &REST.
4944 * The debugger no longer complains about encountering the top of the
4945 stack when you type "FRAME 0" to explicitly instruct it to go to
4946 the top of the stack. And it now prints the frame you request even
4947 if it's the current frame (instead of saying "You are here.").
4948 * As specified by ANSI, the system now always prints keywords
4949 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4951 * The default initial SIZE of HASH-TABLEs is now smaller.
4952 * Type information from CLOS class dispatch is now propagated
4953 into DEFMETHOD bodies, so that e.g.
4954 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4956 is now basically equivalent to
4957 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4958 (DECLARE (TYPE SINGLE-FLOAT X))
4960 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4961 operation, without having to do run-time type dispatch.
4962 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4963 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4964 * Since I don't seem to be making big file reorganizations very often
4965 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4966 is overflowing my ability to conveniently back them up), I've finally
4967 checked the system into CVS. (The CVS repository is on my home system,
4968 not at SourceForge -- putting it on SourceForge might come later.)
4969 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4970 high-level GC-NOTIFY-FOO functions send their output. (There's
4971 still very little control of where low-level verbose GC functions
4972 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4973 less than it used to -- the GC-NOTIFY-FOO functions are now under
4974 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4975 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4976 in only one place in the source code, and propagates it automatically
4977 everywhere that it's needed. Thus e.g. when I bump the version from
4978 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4979 * The C source files now include boilerplate legalese and documentation
4980 at the head of each file (just as the Lisp source files already did).
4981 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4982 to his page will be replaced with a link to his new CLiki service.
4984 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4986 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4987 * The build process now looks for GNU make under the default name "gmake",
4988 instead of "make" as it used to. If GNU make is not available as "gmake"
4989 on your system, you can change this default behavior by setting the
4990 GNUMAKE environment variable.
4991 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4992 can build without error under CMU CL.
4994 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4996 * There is now a partial SBCL user manual (with some new text and some
4997 text cribbed from the CMU CL manual).
4998 * The beginnings of a profiler have been added (starting with the
4999 CMU CL profiler and simplifying and cleaning up). Eventually the
5000 main interface should be through the TRACE macro, but for now,
5001 it's still accessed through vaguely CMU-CL-style functions and macros
5002 exported from the package SB-PROFILE.
5003 * Some problems left over from porting CMU CL to the new
5004 cross-compilation bootstrap process have been cleaned up:
5005 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5006 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5007 part when getting rid of the compiler *BACKEND* stuff.)
5008 ** The value of *NULL-TYPE* was screwed up, because it was
5009 being initialized before the type system knew the final
5010 definition of the 'NULL type. This screwed up several key
5011 optimizations in the compiler, causing inefficiency in all sorts
5012 of places. (I found it because I wanted to understand why
5013 GET-INTERNAL-RUN-TIME was consing.)
5014 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5015 PROCLAIM FTYPE information. Unfortunately this broke binary
5016 compatibility again, since now the forms output by DEFGENERIC
5017 to refer to functions which didn't exist in 0.6.3.
5018 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5019 can use the new (as of 0.6.3) transform for SOME into MAP into
5021 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5022 values to (INTEGER 0 1000000), so that the time code will no longer
5023 occasionally get blown up by Linux returning 1000000 microseconds
5024 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5025 its output conform to the ANSI spec. (Alas, this makes its output
5026 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5027 * A full call to MAP NIL with a single sequence argument no longer conses.
5028 * fixes to problems pointed out by Martin Atzmueller:
5029 * The manual page no longer talks about multiprocessing as though
5030 it were currently supported.
5031 * The ILISP support patches have been removed from the distribution,
5032 because as of version 5.10.1, ILISP now supports SBCL without us
5033 having to maintain patches.
5034 * added a modified version of Raymond Toy's recent CMU CL patch for
5035 EQUALP comparison of HASH-TABLE
5037 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5039 * The system still can't cross-compile itself with
5040 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5041 entails), but at least it can compile more of itself that way
5042 than it used to be able to, and various buglets which were uncovered
5043 by trying to cross-compile itself that way have now been fixed.
5044 * This release breaks binary compatibility again. This time
5045 at least I've incremented the FASL file format version to 2, so that the
5046 problem can be detected reliably instead of just causing weird errors.
5047 * various new style warnings:
5048 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5049 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5050 ** using the lexical binding of a variable named in the *FOO* style
5051 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5052 as specified by ANSI.
5053 * *RANDOM-STATE* is no longer automatically initialized from
5054 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5055 default behavior of the system is to repeat its behavior every time
5056 it's run. If you'd like to change this behavior, you can always
5057 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5058 old convention there was no comparably easy way to get the system to
5059 repeat its behavior every time it was run.
5060 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5061 FTYPE declarations has been removed, in favor of their ANSI
5062 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5063 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5064 the types of their sequence arguments can be determined at compile time.
5065 This is done through a new open code expansion for MAP which eliminates
5066 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5067 argument types can be determined at compile time.
5068 * The optimizer now transforms COERCE into an identity operation when it
5069 can prove that the coerced object is already of the correct type. (This
5070 can be a win for machine generated code, including the output of other
5071 optimization transforms, such as the MAP transform above.)
5072 * Credit information has been moved from source file headers into CREDITS.
5073 * Source file headers have been made more standard.
5074 * The CASE macro now compiles without complaining even when it has
5077 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5079 * (Note that the way that the PCL macroexpansions were rewritten
5080 to accommodate the change in DEFGENERIC below breaks binary
5081 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5082 not run under sbcl-0.6.2. Once we get out of alpha releases,
5083 i.e. hit release 1.0.0, we'll probably try to maintain binary
5084 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5085 and sbcl-1.4.4. Until then, however, it might be fairly common
5086 for maintenance releases to break binary compatibility.)
5087 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5089 * The reporting of unhandled signals has been changed to print some
5090 explanatory text as well as the report form. (Previously only
5091 the report form was printed.)
5092 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5093 it defines, so that the compiler no longer issues undefined function
5094 warnings for compiled-but-not-yet-loaded generic functions.
5095 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5096 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5097 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5098 section of the ANSI spec are supported.
5099 * The "" nickname for the "KEYWORD" package has been removed.
5100 The reader still handles symbol tokens which begin with a package marker
5101 as keywords, but it doesn't expose its mechanism for doing so in the
5102 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5103 * The system now issues STYLE-WARNINGs for contradictory TYPE
5104 proclamations. (Warnings for contradictory FTYPE proclamations would
5105 be nice too, but those can't be done usefully unless the type system
5106 is made smarter about FUNCTION types.)
5107 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5108 systematized, so that "*target-*.lisp is supposed to exist only on the
5109 target and imply that there's a related file which exists on the
5110 host, and *host-*.lisp is supposed to exist only on the host and imply
5111 that there's a related file which exists on the target. This involves a
5112 lot of renaming. Hopefully the acute confusion caused by the renaming
5113 will be justified by the reduction in chronic confusion..
5114 ** runtime-type.lisp -> early-target-type.lisp
5115 ** target-type.lisp -> late-target-type.lisp
5116 ** early-host-format.lisp -> early-format.lisp
5117 ** late-host-format.lisp -> late-format.lisp
5118 ** host-error.lisp -> misc-error.lisp
5119 ** early-error.lisp -> early-target-error.lisp
5120 ** late-error.lisp -> late-target-error.lisp
5121 ** host-defboot.lisp -> early-defboot.lisp
5122 ** code/misc.lisp -> code/target-misc.lisp
5123 ** code/host-misc.lisp -> code/misc.lisp
5124 ** code/numbers.lisp -> code/target-numbers.lisp
5125 ** code/early-numbers.lisp -> numbers.lisp
5126 ** early-host-type.lisp -> early-type.lisp
5127 ** late-host-type.lisp -> late-type.lisp
5128 ** host-typep.lisp -> typep.lisp
5129 ** load.lisp -> target-load.lisp
5130 ** host-load.lisp -> load.lisp
5131 ** host-disassem.lisp -> disassem.lisp
5132 ** host-insts.lisp -> insts.lisp
5133 ** byte-comp.lisp -> target-byte-comp.lisp
5134 ** host-byte-comp.lisp -> byte-comp.lisp
5135 ** host-signal.lisp -> signal.lisp
5136 ** host-defstruct.lisp -> defstruct.lisp
5137 ** late-target-type.lisp -> deftypes-for-target.lisp
5138 Furthermore, several other previously target-only files foo.lisp (e.g.
5139 hash-table.lisp and random.lisp) have been split into a target-and-host
5140 foo.lisp file and a target-only target-foo.lisp file, with their key type
5141 definitions in the target-and-host part, so that the cross-compiler will
5142 know more about target types.
5143 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5144 gone away. In their place are various *BACKEND-FOO* variables
5145 corresponding to the slots of the old structure.
5146 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5147 into the target SBCL has been fixed.
5148 * The chill.lisp system for loading cold code into a running SBCL
5150 * Support for the CMU CL "scavenger hook" extension has been removed.
5151 (It was undocumented and unused in the CMU CL sources that SBCL was
5152 derived from, and stale in sbcl-0.6.1.)
5153 * Various errors in the cross-compiler type system were detected
5154 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5155 (enabling various consistency checks). Many of them were fixed,
5156 but some hard problems remain, so the compiler is back to
5157 running without *TYPE-SYSTEM-INITIALIZED* for now.
5158 * As part of the cross-compiler type system cleanup, I implemented
5159 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5160 * I have started adding UNCROSS calls throughout the type system
5161 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5162 on cross-compiler input files will be able to go away, and various
5164 * CONSTANTP now returns true for quoted forms (as explicitly required
5167 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5169 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5170 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5171 (MAKE-LIST -1). In the longer term, it ought to become true
5172 that declarations are assertions even at SAFETY 1. For now, it's not
5173 quite true even at SAFETY 3, but it's at least more nearly true..
5174 (Note that this change seems to increases the size of the system by
5175 O(5%) and to decrease the speed of the compiler by 20% or more.)
5176 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5177 for the problem of printing dozens of lines of distracting information
5178 about low-level system machinery as part of the top stack frame
5179 on entry to the debugger when an undefined function was called.
5180 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5181 is not reset to COMMON-LISP-USER.
5182 * Compilation of stuff related to dyncount.lisp has been made conditional
5183 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5184 smaller. The various dyncount-related symbols have been moved into
5185 a new "SB-DYNCOUNT" package.
5186 * tty-inspect.lisp has been renamed to inspect.lisp.
5187 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5188 feature has gone away. (When we eventually port to other flavors of
5189 libc and/or Unix, we'll try to make the differences between flavors
5190 invisible at the user level.)
5191 * Various other *FEATURES* tags, and/or their associated conditionals,
5192 have been removed if obsolescent, or given better documentation, or
5193 sometimes given more-mnemonic names.
5195 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5197 * tidied up "make.sh" script
5198 * tidied up system directory structure
5199 * better "clean.sh" behavior
5200 * added doc/FOR-CMUCL-DEVELOPERS
5201 * many many small tweaks to output format, e.g. removing possibly-confusing
5202 trailing #\. character in DESCRIBE-INSTANCE
5203 * (EQUALP #\A 'A) no longer signals an error.
5204 * new hashing code, including EQUALP hashing
5205 * tidied up Lisp initialization and toplevel
5206 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5207 * command line argument processing
5208 * added POSIX-GETENV function to deal with Unix-ish environment variables
5209 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5210 terminating SBCL on EOF
5211 * non-verbose GC by default
5212 * There is no more "sbcl" shell script; the sbcl file is now the C
5213 runtime executable (just like CMU CL).
5214 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5216 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5217 symbol and package information as Lisp native symbol and package objects
5218 instead of strings naming symbols and strings naming packages. This way,
5219 whenever packages are renamed (as in warm init), debug information is
5220 transformed along with everything else.
5221 * tweaked the optimization policy declarations which control the building
5222 of SBCL itself. Now, among other things, the system no longer saves
5223 source location debugging information. (This helps two problems at once
5224 by reducing SBCL size and by keeping SBCL from trying to look for its
5225 sources -- which may not exist -- when reporting errors.)
5226 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5227 debugging and testing purposes
5228 * cleaned up printing, making the printer call PRINT-OBJECT for
5229 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5230 methods, giving nearly-ANSI behavior
5231 * converted almost all special variables to use *FOO* naming convention
5232 * deleted PARSE-TIME functionality, since it can be done portably
5233 * moved some files out of cold init into warm init
5234 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5236 * regularized formatting of source files
5237 * added an install.sh script
5238 * fixed ridiculous memory usage of cross-compiler by making
5239 compiler/alloc.lisp not try to do pooling unless it can hook
5240 itself into the GC of the cross-compilation host. Now the system
5241 builds nicely on my old laptop.
5242 * added :SB-ALLOC in target-features.lisp-expr
5243 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5244 was not implemented)
5245 * re-did condition handling and note reporting in the compiler. Notes
5246 are no longer handled by signalling conditions. Style warnings
5247 and warnings are handled more correctly and reported in such a way
5248 that it's easy to find one or the other in your output (so that you
5249 can e.g. figure out which of many problems caused COMPILE-FILE to
5251 * changed the severity of several compiler warnings from full WARNING
5252 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5253 compiler note reporting so that it doesn't use the condition system
5254 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5255 COMPILE-FILE command)
5256 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5257 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5258 no longer supported, since their implementation was deeply intertwingled
5259 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5260 * removed bogus "support" for compiler macros named (SETF FOO), and
5261 removed the compiler macro for SETF INFO (but only after making a fool
5262 of myself on the cmucl-imp mailing list by posting a bogus patch for
5263 DEFINE-COMPILER-MACRO..)
5264 * Compiled files containing forms which have side effects on the Lisp
5265 reader (such as DEFPACKAGE forms) are now handled more correctly.
5266 (Compiler queuing of top level lambdas has been suppressed by setting
5267 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5268 * deleted various currently-unused source files, e.g. gengc.lisp. They
5269 may be added back at some point e.g. when porting to other architectures,
5270 but until they are it's distracting to distribute them and to try to
5272 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5273 there were so many of them they're just distractions, and UNCROSS is
5274 known to be able to handle the current sources
5275 * moved PROFILE functionality into TRACE, so that it will be clear
5276 how the wrapping and unwrapping of functions when you profile them
5277 interacts with the wrapping and unwrapping of functions when you
5278 trace them. (Actually, the functionality isn't there yet, but at least
5279 the interface specification is there. Hopefully, the functionality will
5280 arrive with some future maintenance release.)
5281 * removed host-oops.lisp
5282 * changed signature of QUIT function to allow UNIX-CODE argument
5283 * fixed READ-SEQUENCE bug
5284 * tweaked verbose GC output so that it looks more like the progress
5285 output that ANSI specifies for functions like LOAD
5286 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5287 * added <http://sbcl.sourceforge.com> to the banner information printed by