1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.30:
3 * improvement: stack allocation is should now be possible in all nested
4 inlining cases: failure to stack allocate when equivalent code is manually
5 open coded is now considered a bug.
6 * improvement: the Unicode character database has been upgraded to the
7 Unicode 5.1 standard, giving names and properties to a number of new
8 characters, and providing a few extra characters with case
10 * improvement: the system now recognizes and produces names for Unicode
11 Hangul syllable characters.
12 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
13 be used to output toplevel compile-time effects into a separate .CFASL
15 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
16 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
18 * optimization: division of floating point numbers by constants uses
19 multiplication by reciprocal when an exact reciprocal exists.
20 * optimization: multiplication of single- and double-floats floats by
21 constant two has been optimized.
22 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
23 sufficient type information is available. (thanks to Leslie Polzer)
24 * optimization: unused vector creation can now be optimized away.
25 * improvement: ASDF systems can now depends on SB-INTROSPECT.
26 * improvement: a STYLE-WARNING is signalled when a generic function
27 clobbers an earlier FTYPE proclamation.
28 * improvement: the compiler is able to track the effective type of
29 generic function across method addition and removal even in the
30 absence of an explicit DEFGENERIC.
31 * improvement: DESCRIBE now reports on symbols naming undefined
32 but assumed or declared function as well.
33 * improvement: recompilation of systems using SB-GROVEL now works
34 (thanks to Leslie Polzer)
35 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
36 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
38 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
39 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
40 well as user defined declaration names.
41 ** VARIABLE-INFORMATION is now aware of alien variables.
42 * improvement: improved address space layout on OpenBSD (thanks to Josh
44 * improvement: pretty-printing of various Lisp forms has been improved
45 (thanks to Tobias Rittweiler)
46 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
48 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
49 (thanks to Larry D'Anna)
50 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
51 as well. (reported by Josh Elsasser)
52 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
53 leading to possible attempts to delete the same file twice. See docstring
54 on DELETE-FILE for details. (reported by John Fremlin)
55 * bug fix: the low-level debugger had 32-bit assumptions and was missing
56 information about some array types. (thanks to Luis Oliveira)
57 * bug fix: moderately complex combinations of inline expansions could
58 be miscompiled if the result was declared to be dynamic extent.
59 * bug fix: in some cases no compiler note about failure to stack allocate
60 was emitted, even if the objects were in fact heap allocated.
61 * bug fix: minor violation of "otherwise inaccessible" rule for stack
62 allocation could cause objects users might reasonably expect to
63 be heap allocated to be stack allocated.
64 * bug fix: DESCRIBE signalled an error for generic functions under
65 certain circumstances. (thanks to Leslie Polzer)
66 * bug fix: Fixed spelling of an error message.
68 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
69 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
70 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
71 of SB-THREAD:THREAD-ERROR-THREAD.
72 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
73 * new feature: docstrings for local and anonymous functions are no longer
74 discarded. (thanks to Leslie Polzer)
75 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
76 values in other threads.
77 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
78 about object allocation.
79 * optimization: division of a real float by a complex float is implemented
80 with a specialised code sequence.
81 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
82 keywords is an order of magnitude faster.
83 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
84 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
85 methods, and similarly for non-standard metaclass classes as long as there
86 are no methods additional on MAKE-INSTANCE.
87 * optimization: more efficient type-checks for FIXNUMs when the value
88 is known to be a signed word on x86 and x86-64.
89 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
90 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
92 * optimization: compiler is smarter about delegating argument type checks to
94 * optimization: several character functions are now compiled somewhat more
95 efficiently. (reported by Lynn Quam)
96 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
97 * improvement: less unsafe constant folding in floating point arithmetic,
98 especially for mixed complex/real -float operations.
99 * optimization: constant double and single floats are stored in native
100 unboxed format on x86[-64].
101 * optimization: smarter code for arithmetic operations with constant floats,
102 complex floats, or integers on x86[-64].
103 * optimization: smarter code for conjugate/multiplication of float complexes
104 and abs/negate of floats on x86-64.
105 * optimization: more efficient complex float and real float operations on
107 * improvement: complex float division is slightly more stable.
108 * improvement: DESCRIBE output has been reworked to be easier to read and
109 contains more pertinent information.
110 * improvement: failure to provide requested stack allocation compiler notes
111 provided in all cases (requested stack allocation not happening without a
112 note being issued is now considered a bug.)
113 * bug fix: SB-POSIX exports the documented types and functions
114 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
115 types. (reported by "abhi")
116 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
117 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
118 (thanks to Paul Khuong)
119 * bug fix: looping around HANDLER-CASE could silently consume stack space
120 on each iteration. (reported by "foobar")
121 * bug fix: better error signalling when calls to functions seeking elements
122 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
123 (reported by Tobias Rittweiler)
124 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
125 directory components now works as it used to. (various prolems reported by
126 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
127 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
128 (reported by Elliot Slaughter, thanks to Stas Boukarev)
129 * bug fix: bogus undefined variable warnings from fopcompiled references to
130 global variables. (thanks to Lars Rune Nøstdal)
131 * bug fix: foreign function names should now appear in backtraces on
132 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
133 * bug fix: SETF compiler macro documentation strings are not discarded
135 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
136 (thanks to Alex Plotnick)
137 * bug fix: SLEEP accepts large integer arguments, truncating them to
138 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
139 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
140 * bug fix: compiler notes for expensive slot type checks could be emitted
141 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
143 changes in sbcl-1.0.29 relative to 1.0.28:
144 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
145 https://bugs.launchpad.net/sbcl
146 Bugs can be reported directly there, or by sending email to
147 sbcl-bugs@lists.sourceforge.net
148 (no subscription required.)
149 * minor incompatible change: under weak type checking policy integer
150 types are weakened less aggressively.
151 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
152 allowed to return, which causes SBCL to quit with exit status 0. Previously
153 if the function returned with a small integer return value, that value
154 was accidentally reused as the exit status.
155 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
156 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
157 :HASH-FUNCTION argument. Refer to user manual for details.
158 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
160 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
161 microseconds since the Unix epoch on all platforms.
162 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
163 allows the compiler to safely elide boundedness checks for special
165 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
166 the symbol, prohibits both lexical and dynamic binding. This is mainly an
167 efficiency measure for threaded platforms, but also valueable in
169 * new feature: UNC pathnames are now understood by the system on Windows.
170 * optimization: the compiler uses a specialized version of FILL when the
171 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
173 * optimization: accesses to potentially non-simple arrays where element type
174 is known are 50% faster.
175 * optimization: compiler now generates faster array typechecking code.
176 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
178 * optimization: multidimensional array accesses in the absence of type
179 information regarding array rank are approximately 10% faster due to
180 open coding of ARRAY-RANK.
181 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
182 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
184 * optimization: result of call to VECTOR can now be stack allocated.
185 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
186 as long as the resulting array is one-dimensional and has a known
187 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
188 length of the list matches the known length of the vector does not
189 allocate the list as an intermediate step. Ditto for VECTOR and simple
191 * optimization: MAKE-ARRAY can now stack allocate in the presence of
192 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
193 known element type, and is known to be simple and one dimensional.
194 * improvement: SBCL now emits a compiler note where stack allocation was
195 requested but could not be provided (not in all cases, unfortunately)
196 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
197 * improvement: pretty-printing loop has been implemented properly. (thanks
198 to Tobias Rittweiler)
199 * documentation: CLOS slot typechecing policy has been documented.
200 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
201 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
202 pointer, leading to memory faults. (thanks to Bart Botta)
203 * bug fix: better floating point exception handling on x86/OpenBSD.
204 (thanks to Josh Elsasser)
205 * bug fix: exit status from QUIT when called under --script was lost
206 (reported by Hubert Kauker)
207 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
208 same implementation of FILL to initialize the array, even if a more
209 efficient one was available (reported by Stas Boukarev, thanks to
211 * bug fix: potential miscompilation of array stack allocation on x86 and
212 x86-64. (reported by Time Tossavainen)
213 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
214 result in their subforms being treated as top level forms. (reported by
216 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
217 than a machine register could leave garbage in the high bits of the
218 result register (bug 316325).
219 * bug fix: disable address space randomization Linux/x86-64 as well,
220 not just x86-64. (reported by Ken Olum)
221 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
222 generate incorrect code.
223 * bug fix: #201; type inference for CONS and ARRAY types could derive
224 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
225 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
226 could not be assigned to or bound with PROGV. (reported by Lorenz
228 * bug fix: the value of CL:- in the inspector was the previous expression
229 evaluated rather than the expression being evaluated.
230 * bug fix: constants can no longer be locally declared special.
231 * bug fix: signals delivered to threads started from foreign land (read:
232 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
233 thread by blocking all signals and resignalling.
234 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
235 from :INITFORM, if any.
237 changes in sbcl-1.0.28 relative to 1.0.27:
238 * a number of bugs in cross-compilation have been fixed, with the ultimate
239 result that building under (at least) clisp should be much more reliable.
240 * minor incompatible changes: echo-streams now propagate unread-char to the
241 underlying input stream, and no longer permit unreading more than one
243 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
244 frames, allowing for instance more reliable backtraces.
245 * improvement: the debugger REPL can now reference lexical variables
246 by name directly for code compiled with (DEBUG 3).
247 * improvement: errors from malformed declarations now have better source
248 paths associated with them. (thanks to Tobias Rittweiler)
249 * optimization: faster local calls on x86/x86-64
250 * bug fix: some error messages for out-of-bound array indexes confused the
251 index and the bound. (thanks to Stas Boukarev)
252 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
254 * bug fix: running regressions tests in shells without OSTYPE set now works.
255 (reported by Harald Hanche-Olsen)
256 * bug fix: more robust static space exhaustion signalling from
257 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
258 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
259 docstring away instead of storing it under names such as (LAMBDA (X)).
260 (reported by Leslie Polzer)
261 * bug fix: timers could go off in the wrong order, be delayed indefinitely
262 (thanks to Ole Arndt for the patch)
263 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
264 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
265 potentially-invalid effective methods in its cache.
266 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
267 instances as well (thanks to Paul Khuong)
268 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
269 SB-POSIX:WAITPID and their C equivalents.
270 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
272 changes in sbcl-1.0.27 relative to 1.0.26:
273 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
274 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
275 * improvement: the system either recovers from stack exhaustion or dies
276 properly as opposed to leaving the user uncertain of whether the handler
277 trampled on some random memory next to the stack or having to rely on
278 --lose-on-corruption (which is still a good idea to use in production
279 because stack exhaustion can happen in signal handlers which will likely
281 * bug fix: fix gc related interrupt handling bug on ppc (regression from
282 1.0.25.37, reported by Harald Hanche-Olsen)
283 * bug fix: work around signal delivery bug in darwin (regression from
284 1.0.25.44, reported by Sidney Markowitz)
285 * bug fix: fix ERROR leaking memory (reported by David Thompson)
287 changes in sbcl-1.0.26 relative to 1.0.25:
288 * incompatible change: an interruption (be it a function passed to
289 INTERRUPT-THREAD or a timer function) runs in an environment where
290 interrupts can be enabled. The interruption can use
291 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
292 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
293 potentially running out of stack. Keep in mind that in the absence
294 of WITHOUT-INTERRUPTS some potentially blocking operation such as
295 acquiring a lock can enable interrupts.
296 * incompatible change: GC-OFF and GC-ON are removed, as they were
297 always unsafe. Use WITHOUT-GCING instead.
298 * new feature: runtime option --disable-ldb
299 * new feature: runtime option --lose-on-corruption to die at the
300 slightest hint of possibly non-recoverable errors: running out of
301 memory, stack, alien stack, binding stack, encountering a memory
302 fault, etc. In the absence of --lose-on-corruption a warning is
304 * enhancement: detect binding stack exhaustion
305 * enhancement: detect alien stack exhaustion on x86/x86-64
306 * improvement: generally more stable and reliable interrupt handling
307 * improvement: there is a per thread interruption queue,
308 interruptions are executed in order of arrival
309 * improvement: a repeating timer reschedules itself when the it has
310 finished, but expiration times are spaced equally. If an
311 expiration time is in the past it will trigger after a short grace
312 period that may give a chance to other things to run.
313 * optimization: slightly faster gc on multithreaded builds
314 * optimization: faster WITHOUT-GCING
315 * bug fix: when JOIN-THREAD signals an error, do it when not holding
316 important locks so that the debugger/handler doesn't produce
317 recursive errors or deadlock.
318 * bug fix: real-time signals are not used anymore, so no more
319 hanging when the system wide real-time signal queue gets full.
320 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
322 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
323 * bug fix: fix random memory faults related to interrupts on alpha
324 * bug fix: fix random memory faults related to interrupts on sparc
325 * bug fix: fix deadlocks related to starting threads
326 * bug fix: fix deadlines on locks on futex platforms
327 * bug fix: restore errno in signal handlers
328 * bug fix: fix deadlocks related to hash tables
329 * bug fix: fix deadlocks in pcl
331 changes in sbcl-1.0.25 relative to 1.0.24:
332 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
333 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
334 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
335 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
336 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
337 better name and does not return values so stale on multiprocessor systems.
338 Also, HOLDING-MUTEX-P was added for about the only sane usage of
340 * improvement: unithread builds keep track of MUTEX-VALUE.
341 * improvement: reading from a TWO-WAY-STREAM does not touch the output
342 stream anymore making it thread safe to have a concurrent reader and
343 a writer, for instance, in a pipe.
344 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
345 arguments, making compiler-macros for SETF-functions able to inspect
346 their constant arguments.
347 * improvement: COMPILE-FILE reports times with millisecond accuracy
348 (thanks to Luis Oliveira)
349 * optimization: CHAR-CODE type derivation has been improved, making
350 TYPEP elimination on subtypes of CHARACTER work better. (reported
351 by Tobias Rittweiler, patch by Paul Khuong)
352 * bug fix: setting alien structure fields of type struct by value now
353 computes the right offset for the memory copy.
354 * bug fix: compilation problem involving inlined calls to aliens with
355 result type VOID. (reported by Ken Olum)
356 * bug fix: #235a; sequential inline expasion in different policies no
357 longer reuses the functional from the previous expansion site.
358 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
359 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
360 * bug fix: named ENUMs in multiply-referenced alien record types no longer
361 cause an implied type redefinition. Regression from 1.0.21.29.
362 * bug fix: sign-extension of small signed return values now works with C
363 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
364 * improvements to the Windows port:
365 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
366 Westfold, thanks to Rudi Schlatte)
368 changes in sbcl-1.0.24 relative to 1.0.23:
369 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
370 vector of a multidimensional SIMPLE-ARRAY.
371 * new feature: the system now signals a continuable error if standard
372 readtable modification is attempted. (thanks to Tobias Rittweiler)
373 * new feature: DIRECTORY has been extended with a non-standard keyword
374 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
375 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
376 has been robustified and documented better. (thanks to Robert Goldman)
377 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
378 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
379 * tradeoff: constant FORMAT control strings are now compiled unless
380 SPACE > SPEED (previously only when SPEED > SPACE.)
381 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
383 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
385 * bug fix: lexical type declarations are now correctly reported by
386 SB-CLTL2. (reported by Larry D'Anna)
387 * bug fix: STRING-TO-OCTETS did not handle :START properly when
388 using UTF-8 as external format. (thanks to Luis Oliveira)
389 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
390 are signalled correctly. (thanks to Stas Boukarev)
391 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
392 designator. (thanks to Tobias Rittweiler)
393 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
394 designator, and returns T instead of the function. (thanks to
396 * bug fix: direct superclasses of STANDARD-CLASS and
397 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
398 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
399 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
400 when no class with the named slot yet exists no longer causes a
401 compile-time style-warning.
402 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
403 in safe code. (reported by Didier Verna)
404 * bug fix: #430; nested structure constructors can stack allocate.
405 * bug fix: on some 64-bit platforms dynamic space size was truncated
406 to #xffff0000 bytes. (reported by Benjamin Lambert)
407 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
408 REPL unusable. (reported by Daniel Herring)
409 * bug fix: return values of READ-SEQUENCE did not take :START into
410 account on file streams, regressions since 1.0.12.22. (reported by
411 Thomas Russ, patch by Paul Khuong)
412 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
413 method specializer used to confuse permuation vector optimization.
414 * bug fix: system inserted bogus implicit type declarations for local
415 special variables in DEFMETHOD bodies.
416 * bug fix: #354; duplicated frames in backtraces due to
417 non-tail-call-optimized XEPs to functions with return type NIL
419 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
420 initializes structure object slots according to DEFSTRUCT initforms,
421 and DEFSTRUCT forms :INCLUDEind structure classes defined using
422 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
423 (reported by Bruno Haible and Stephen Wilson)
424 * bug fix: #395; fill-pointer output streams used now support
425 element-type BASE-CHAR as well.
426 * bug fix: compiler error when attempting to derive return value of
427 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
429 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
431 * bug fix: Mac OS X binaries should now be portable between Leopard
434 changes in sbcl-1.0.23 relative to 1.0.22:
435 * enhancement: when disassembling method functions, disassembly
436 for the associated fast function is also produced.
437 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
439 * optimization: printing with *PRINT-PRETTY* true is now more
440 efficient as long as the object being printed doesn't require
441 special handling by the pretty printer.
442 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
443 now interact correctly with type declarations.
444 * partial bug fix: PCL detects infinite recursion during wrapper
445 validation. (thanks to Attila Lendvai)
446 * bug fix: #426; nested function calls are inlined properly.
447 Previously if FOO was an inline function, in calls of the form
448 (FOO (FOO ...)) the outer call was not inlined.
449 * bug fix: long long arguments passed in registers to alien
450 functions on PowerPC Linux and NetBSD are now handled correctly
451 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
453 changes in sbcl-1.0.22 relative to 1.0.21:
454 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
455 for the shared object in the current directory, but passes the native
456 namestring of the designated pathname to the operation system's shared
457 object loading function as-it.
458 * minor incompatible change: --disable-debugger toplevel option now takes
459 effect before processing of initialization files and --eval or --load
461 * new feature: new commandline argument: --script, which supports
462 shebang lines. See documentation for details. (based on work by
464 * new feature: SAVE-LISP-AND-DIE can save current values of
465 --dynamic-space-size and --control-stack-size in the executable core,
466 causing it to skip normal runtime option processing. See documentation
467 for details. (thanks to Zach Beane)
468 * enhancement: inoccous calls to EVAL or generic functions dispatching
469 on subclasses of eg. STREAM no longer cause compiler notes to appear.
470 * enhancement: the system no longer resignals errors from --load and
471 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
472 associated with the original error to be lost. (thanks to Ariel
474 * enhancement: :DONT-SAVE keyword argument has been added to
475 LOAD-SHARED-OBJECT for controlling interaction with
476 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
477 the effects of an earlier LOAD-SHARED-OBJECT call.
478 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
479 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
480 provided. (reported by Cedric St-Jean)
481 * bug fix: circularity handling in the reader did not treat raw
482 structure slots correctly. (reported by Cedric St-Jean)
483 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
484 file descriptors when there were none.
485 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
486 was broken. (reporteed by Willem Broekema)
487 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
488 pathnames without a directory.
489 * bug fix: COMPILE-FILE did not warn about undefined variable
490 references at toplevel, and LOAD of the resulting fasl did
492 * bug fix: functions with non-required arguments used to end up with
493 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
494 * bug fix: redefining a function with non-required arguments didn't
495 update the system's knowledge about its call signature properly.
496 * bug fix: fixed #431; incompatible alien record type redefinitions
497 are detected and handled. (reported by Neil Haven)
498 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
499 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
501 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
502 after alien stack frames.
503 * bug fix: strings passed to mk{s,d}temp lacked null termination
505 changes in sbcl-1.0.21 relative to 1.0.20:
506 * new feature: the compiler is able to track the effective type of a
507 generic function across method addition and removal.
508 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
509 appropriately typed structure slots without locking.
510 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
511 information like those gathered by TIME using a programming-friendly
513 * new feature: TIME reports time taken even if the form performs a
514 non-local transfer of control.
515 * enhancement: reduced conservativism on GENCGC platforms: on
516 average 45% less pages pinned (measured from SBCL self build).
517 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
518 mutate constant symbols or violate declaimed type of the symbol.
519 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
520 sleeping on the semaphore in heavily contested semaphores.
521 * bug fix: semaphores and condition variables were not interrupt
523 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
524 owned by other threads anymore.
525 * bug fix: FIND on lists called KEY outside the specified
526 subsequence. (reported by budden)
527 * bug fix: LOG doesn't use single-float intermediate results when
528 given mixed integer and double-float arguments, leading to better
529 precision. (reported by Bob Felts)
530 * bug fix: LOG with base zero returned values of inconsistent type.
532 changes in sbcl-1.0.20 relative to 1.0.19:
533 * minor incompatible change: OPTIMIZE qualities
534 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
535 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
536 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
537 * documentation: some slot access efficiency guidelines have been
538 added to the user manual.
539 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
540 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
541 as ASSOC and MEMEBER.
542 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
543 to more efficient EQ-comparison versions more often.
544 * optimization: enhanced derivation of DOLIST iteration variable type
546 * optimization: constant folding of simple (LIST ...) forms as DOLIST
548 * optimization: runtime lookup of function definitions can be
549 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
550 * optimization: compiler is able to derive the return type of
551 (AREF (THE STRING X) Y) as being CHARACTER.
552 * optimization: CLRHASH on empty hash-tables no longer does pointless
553 work. (thanks to Alec Berryman)
554 * optimization: REPLACE deftransforms don't punt when :START1 or
556 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
557 no longer emits a code deletion note. (reported by Andrew
559 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
560 functions with an odd number of &OPTIONAL arguments, a &REST
561 argument, and one or more &KEY arguments at the call site.
562 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
563 arguments appeared at call sites as well.
564 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
565 READ-LINE &co can no longer read from them afterwards. (reported
567 * bug fix: fixed #427: unused local aliens no longer cause compiler
568 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
570 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
571 alien-stack leakage. (reported by Andy Hefner)
572 * bug fix: PROGV signals an error when an attempt to violate declared
573 type of a variable or bind a constant is made.
574 * bug fix: SET signals an error when an attempt to violate declared
575 type of a variable is made.
576 * bug fix: restart computation during the execution of a restart
577 test function no longer causes infinite recursion. (reported by
579 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
580 signals an error. (thanks to Pierre Mai)
581 * bug fix: EXPORT left symbol unexported in conflict situations.
582 (thanks to Michael Weber)
583 * bug fix: correctly handle name conflicts involving CL:NIL.
584 (thanks to Michael Weber)
585 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
586 conflicts arising from USEing package with conflicting symbols
587 correctly. (thanks to Michael Weber)
589 changes in sbcl-1.0.19 relative to 1.0.18:
590 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
591 warnings that go otherwise unhandled will be muffled if they are
592 of the type that's the value of this variable.
593 * optimization: stack allocation is slightly more efficient on x86
595 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
596 where a raw slot always is initialized using the initform whose
597 type is not know sufficiently well a compile-time are now compiled
598 correctly. (reported by John Morrison)
599 * bug fix: compiler no longer makes erronous assumptions in the
600 presence of non-foldable SATISFIES types.
601 * bug fix: stack analysis missed cleanups of dynamic-extent
602 arguments in non-let-converted calls to local functions.
603 * improvements to the Windows port:
604 ** adjusted address spaces for building on both Win32 and
605 Win64. (thanks for John Connors)
606 * fixed some bugs revealed by Paul Dietz' test suite:
607 ** interval arithmetic during type derivation used inexact integer
608 to single-float coercions.
609 ** arithmetic operations involving large integers and single
610 floats give the same results in compiled and interpreted code.
611 ** deriving the result type of COERCE no longer signals an error
612 if the derived type of the second argument is a MEMBER type
613 containing invalid type specifiers.
614 ** ADJOIN with constant NIL as second argument works correctly.
615 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
617 changes in sbcl-1.0.18 relative to 1.0.17:
618 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
619 profiles only the current thread.
620 * minor incompatible change: changes to SYMBOL-VALUE of constants
621 defined with DEFCONSTANT now signal an error.
622 * enhancement: SB-SPROF now has support for wallclock profiling,
623 and is also able to profile specific threads. REPORT output
624 has also additional sorting options.
625 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
627 * optimization: structure allocation has been improved
628 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
629 ** out of line constructors are ~10% faster.
630 ** inline constructors are ~15% faster.
631 ** inline constructors are capable of dynamic extent allocation
632 (generally on x86 and x86-64, in some cases on other platforms
634 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
636 * optimization: file compiler is now able to coalesce non-circular
637 lists, non-base strings, and bit-vectors. Additionally, constants
638 are never referenced through SYMBOL-VALUE at runtime.
639 * optimization: code defining methods on PRINT-OBJECT (and other
640 generic functions in the COMMON-LISP package) now loads faster.
641 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
643 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
644 fasl is now deleted. (reported by Attila Lendvai)
645 * bug fix: READ-LINE always returned NIL for the last line in files.
646 (reported by Yoshinori Tahara)
647 * bug fix: more accurate disassembly annotations of foreign function
648 calls. (thanks to Andy Hefner)
649 * bug fix: trimming non-simple strings and non-string string
650 designators when the there is nothing to trim works properly.
651 (thanks to James Knight)
652 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
653 (thanks to Travis Cross)
654 * fixed some bugs revealed by Paul Dietz' test suite:
655 ** NIL is a valid function name (regression at 1.0.13.38)
656 ** FILL on lists was missing its return value (regression at 1.0.12.27)
657 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
658 fill pointers properly (regression at 1.0.12.23)
659 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
660 displacement indices properly (regression at 1.0.12.23)
662 changes in sbcl-1.0.17 relative to 1.0.16:
663 * temporary regression: user code can no longer allocate closure
664 variable storage on stack, due to bug 419 without explicitly
665 requesting it. Please consult sbcl-devel for advice if you need to
666 use this feature in the meanwhile.
667 * new feature: runtime argument --control-stack-size can be used to
668 adjust thread default control stack size.
669 * enhancement: improved TIME output
670 ** all times are reported using the measured accuracy (milliseconds
671 for real and GC times, microseconds for everything else.)
672 ** processor cycle counts on x86 and x86-64.
673 ** interpreted forms are counted for both evaluator modes.
674 ** number of lambdas converted by the compiler is reported.
675 ** CPU percentage report (computed from real and total run time.)
676 ** more comprehensive run time reporting, using a condenced format
677 ** interperted form, lambda, and page fault counts are omitted
679 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
681 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
682 * optimization: two argument forms of LAST are upto ~10% faster
683 in normal SPEED policies.
684 * optimization: NCONC no longer needs to heap cons its &REST list
685 in normal SPEED policies.
686 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
688 * bug fix: UNION and NUNION work with :TEST-NOT once more,
689 regression since 1.0.9.1. (thanks to Eric Marsden)
690 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
691 since 1.0.15.36. (thanks to Paul Khuong)
692 * bug fix: LAST when always returned the whole list when given a bignum
693 as the second argument.
694 * bug fix: dynamic extent allocation of nested lists and vectors
695 could leak to otherwise accessible parts.
696 * bug fix: invalid optimization of heap-allocated alien variable
698 * bug fix: fasl header checking is less vulnerable to different
699 platform word lengths.
700 * bug fix: more correct assembler syntax for GNU binutils
701 2.18.50.0.4 support. (thanks to Marijn Schouten)
702 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
704 * bug fix: the fopcompiler can handle LOCALLY forms (with no
705 declarations) successfully. (reported by Attila Lendvai)
707 changes in sbcl-1.0.16 relative to 1.0.15:
708 * minor incompatible change: revert the changes to sb-posix's error
709 signaling added in 1.0.14.
710 * minor incompatible change: change PROBE-FILE back to returning
711 NIL whenever we can't get a truename, as was the case before 1.0.14.
712 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
713 inherits from ERROR instead of just CONDITION.
714 * new feature: SB-INTROSPECT can provide source locations for instances
715 as well. (thanks to Tobias Rittweiler)
716 * optimization: binding special variables now generates smaller code
717 on threaded platforms.
718 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
719 and cases where no :TEST is given but the compiler can infer that
720 the element to search is of type (OR FIXNUM (NOT NUMBER)).
721 * optimization: better LOGNOT on fixnums.
722 * optimization: modular arithmetic for a particular requested width
723 is implemented using a tagged representation unless a better
724 representation is available.
725 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
726 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
727 for wellformedness and returns a specialized vector. (reported by
728 Francois-Rene Rideau)
729 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
730 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
731 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
732 unscheduling timer at the same time as another timer fires.
733 * bug fix: don't reschedule timers for dead threads.
734 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
735 * bug fix: copying output from RUN-PROGRAM to a stream signalled
736 bogus errors if select() was interrupted.
737 * enhancement: add support for fcntl's struct flock to SB-POSIX.
739 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
740 * enhancement: cleaner backtraces for interactive interrupts, as
741 well as other cases where the interesting frames used to be
742 obscured by interrupt handling frames.
743 * enhancement: untracing a whole package using (UNTRACE "FOO") is
744 now supported, and tracing a whole package using (TRACE "FOO") now
745 traces SETF-functions as well.
746 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
747 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
748 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
749 * unreadably printed representation of hash-tables now includes
751 * bug fix: partially fixed #188: type propagation from assignments
752 is now more efficient.
753 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
754 'DOUBLE-FLOAT) are not flushable.
755 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
756 full address of the object, and none of the tag bits.
757 * bug fix: readably printing hash-tables now respects other printer
758 control variables. (reported by Cedric St-Jean)
759 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
760 keyword with MAKE-HASH-TABLE.
761 * bug fix: export SB-POSIX:MKSTEMP.
762 * bug fix: SORT was not interrupt safe.
763 * bug fix: XREF accounts for the last node of each basic-block as
765 * bug fix: MAKE-INSTANCE optimizations interacted badly with
766 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
767 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
768 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
769 create obsolete instances in the case of redefinition or
770 obsoletion of a superclass. (thanks to Andy Hefner)
771 * bug fix: Support for the Alpha architecture has been revived; it had
772 suffered somewhat from lack of maintenance since sbcl-1.0.
773 * improvements to the Windows port:
774 ** The system detects the codepage to use at startup, instead of
775 using the value from the saved core. (thanks to Kei Suzuki)
777 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
778 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
779 (see documentation for details.)
780 * revived support for OpenBSD (contributed by Josh Elsasser)
781 * partially fixed bug #108: ROOM no longer suffers from occasional
782 (AVER (SAP= CURRENT END)) failures.
783 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
784 bodies no longer cause a WARNING to be signalled. (reported by
786 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
787 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
788 the bug in TRUNCATE.) (reported by Michael Weber)
789 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
790 no samples. (reported by Andy Hefner)
791 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
792 no longer appear as (NIL ...) frames in backtraces.
793 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
794 is now actually exported from SB-EXT as documented. (reported by
796 * bug fix: sb-aclrepl now correctly understands how to inspect
797 single-floats on 64-bit platforms where single-floats are not boxed.
798 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
799 yet been finalized. (reported by Levente Meszaros)
800 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
801 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
802 SBCL-specific optimize qualities.
804 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
805 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
806 an executable in the search path, and does so in the child
807 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
808 been removed; it can be found in the CVS history, for somebody who
809 needs that search behavior (see the manual).
810 * minor incompatible change: compiler policy re. weakening type
811 checks has changed: now type checks are weakened only if SAFETY < 2
813 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
814 unparsing of directory pathnames as files. Analogously,
815 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
816 filename to parse into a directory pathname.
817 * enhancement: implicit generic function creation now signals a
818 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
819 users can bind handlers for and muffle around calls to LOAD.
820 * enhancement: RUN-PROGRAM allows unicode arguments and environments
821 to be used (using the default stream external format), and allows
822 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
823 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
824 strings and vectors whose element-type or simplicity is not fully
825 known at compile-time.
826 * optimization: STRING-TRIM and related functions no longer allocate
827 a new string when no trimming needs to be performed. These functions
828 are also faster than before when the input string has been declared
830 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
831 * optimization: READ-LINE is significantly faster for files containing
833 * optimization: non-open coded uses of character comparison operators
834 (e.g. char=) no longer cons when called with more than one parameter
835 on platforms supporting dynamic-extent allocation.
836 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
837 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
838 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
840 * bug fix: some sequence functions elided bounds checking when
842 * bug fix: too liberal weakening of union-type checks when SPEED >
844 * bug fix: more bogus fixnum declarations in ROOM implementation
847 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
848 * new feature: MAKE-HASH-TABLE now experimentally accepts a
849 :SYNCHRONIZED argument, which makes the hash-table safe for
850 concurrent accesses (but not iteration.) See also:
851 SB-EXT:WITH-LOCKED-HASH-TABLE, and
852 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
853 * optimization: CONCATENATE on strings is an order of magnitude faster
854 in code compiled with (> SPEED SPACE).
855 * optimization: SUBSEQ is ~50% faster on lists.
856 * bug fix: bug 417 fixed -- source location reporting is now more robust.
857 * bug fix: SUBSEQ on a list will now correctly signal an error if if
858 END is smaller then START.
859 * bug fix: SB-PROFILE will no longer report extra consing for nested
860 calls to profiled functions.
861 * bug fix: ROOM implementation had bogus fixnum declarations which
862 could cause type-errors when calling ROOM on large images.
863 * bug fix: if file compilation is aborted, the partial fasl is now
864 deleted, and COMPILE-FILE returns NIL as the primary value.
865 * bug fix: number of thread safety issues relating to SBCL's internal
866 hash-table usage have been fixed.
867 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
868 be returned from its body when the values were being returned
869 using unknown-values return convection and the W-P-O was wrapped
870 inside an UNWIND-PROTECT.
871 * bug fix: sb-posix should now compile again under Windows, enabling
874 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
875 * incompatible change: hash-table accessor functions are no longer
876 automatically protected by locks. Concurrent accesses on the same hash-table
877 from multiple threads can give inconsistent results or even corrupt the
878 hash-table completely. Multi-threaded applications should do their own
879 locking at the correct granularity. In the current implementation it is
880 still safe to have multiple readers access the same table, but it's not
881 guaranteed that this property will be maintained in future releases.
882 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
883 and will signal an error at runtime.
884 * enhancement: SB-THREAD package now exports a semaphore interface.
885 * enhancement: CONS can now stack-allocate on x86 and
886 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
888 * enhancement: nested lists can now be stack allocated on
889 platforms providing stack allocation support.
890 * enhancement: dynamic-extent support has been extended to support
891 cases where there are multiple possible sources for the stack
893 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
894 if the mutex is uncontested on Linux.
895 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
896 as specified by the CLHS. (thanks to Tobias Rittweiler)
897 * bug fix: NaN comparison now works on x86-64.
898 * bug fix: CLOSE :ABORT T on a stream with pending output now
900 * bug fix: instances of non-standard metaclasses using standard
901 instance structure protocol sometimes missed the slot type checks
903 * bug fix: known functions can be inlined in high-debug code.
905 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
906 * minor incompatible change: the MSI installer on Windows no longer
907 associates .lisp and .fasl files with the installed SBCL.
908 * minor incompatible change: :UNIX is no longer present in *FEATURES*
909 on Windows. (thanks to Luis Oliviera)
910 * new feature: SB-CLTL2 contrib module now implements
911 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
912 * optimization: scavenging weak pointers is now more efficient,
913 requiring O(1) instead of O(N) per weak pointer to identify
914 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
915 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
916 method bodies using constant slot-names when the first argument is
917 a specializer parameter for the method.
918 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
919 names, when the class of the instance is a direct instance
920 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
921 as slow as the constant slot-name case.)
922 * optimization: member type construction is now O(N) instead
924 * optimization: UNION and NUNION are now O(N+M) for large
925 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
927 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
928 now more readable in environments like Slime which display it.
929 (thanks to Tobias C. Rittweiler)
930 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
931 was able to infer the correct argument type for the object on which
932 the CAS operation was being performed.
933 * bug fix: copy propagation interfered with parallel assignment
934 semantics in local calls. (reported by Paul Khuong)
935 * bug fix: the signed modular fixnum shift compiled to wrong code on
936 x86 and x86-64. (spotted by a slight modification to some of
939 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
940 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
941 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
942 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
944 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
945 and generic function now print the object identity for anonymous
946 instances. (thanks to Attila Lendvai)
947 * enhancement: as an extension to MOP, SBCL now supports SETF of
948 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
949 (thanks to Attila Lendvai)
950 * enhancement: sb-cover has an alternate annotation mode which puts
951 the form annotations at the car of the form, instead of annotating
952 it completely. The benefit of this mode is that it shows better
953 which forms were instrumented by the compiler.
954 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
955 by printer control variables. (reported by Dan Corkill)
956 * bug fix: system leaked memory when delayed output was performed by
957 the OS in smaller chunks then expected. (thanks to David Smith)
958 * bug fix: system leaked memory when file streams were not closed
960 * bug fix: large objects written to slow streams that were modified
961 after the write could end up with the modified state written to
962 the underlying file descriptor.
963 * bug fix: multiple threads operating in parallel on the same stream
964 could cause buffer-overflows.
965 * bug fix: source location information is stored correctly
966 (broken since 1.0.6). This bug would generally show up as the
967 Slime debugger highlighting the wrong form when the sldb-show-source
969 * bug fix: Branch forms are again annotated as branches in the sb-cover
971 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
972 on x86-64. (reported by Gregory Vanuxem)
973 * bug fix: EQUALP could return wrong results for structures with raw
974 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
975 word). (reported by Vjacheslav Fyodorov)
976 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
979 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
980 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
981 atomic compare-and-swap operations on threaded platforms.
982 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
983 allows assigning a global minimum value to optimization qualities
984 (overriding proclamations and declarations).
985 * enhancement: closed over variables can be stack-allocated on x86
987 * performance bug fix: GETHASH and (SETF GETHASH) are once again
989 * optimization: slot definition lookup is now O(1). This speeds up
990 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
991 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
992 * optimization: ASSOC and MEMBER can now be open-coded for all
993 combinations of keyword arguments when second argument is constant
994 and SPEED >= SPACE. In other cases a specialized version is
996 * bug fix: using obsoleted structure instances with TYPEP and
997 generic functions now signals a sensible error.
998 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
999 (reported by Kristoffer Kvello)
1000 * bug fix: backtrace construction is now more careful when making
1001 lisp-objects from pointers on the stack, to avoid creating bogus
1002 objects that can be seen by the GC.
1003 * bug fix: defaulting of values in contexts expecting more than 7
1004 variables now works on x86-64. (reported by Christopher Laux)
1005 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1007 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1008 as the property-list of a symbol.
1009 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1010 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1011 situations requested, are once again file-compileable. (reported
1014 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1015 * MOP improvement: support for user-defined subclasses of
1016 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1017 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1018 the expansion of DEFMETHOD, is responsible for generating a form
1019 which creates a list of specializers when evaluated. Additional
1020 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1021 debugging and introspective support.
1022 * minor incompatible change: the (unsupported) spinlock interface
1023 has changed: free spinlock now has the value NIL, and a held spinlock
1024 has the owning thread as its value.
1025 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1026 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1028 * enhancement: name of a socket-stream is now "a socket" instead of
1029 "a constant string".
1030 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1031 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1032 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1033 for generic functions. (Thanks to Tobias C. Rittweiler)
1034 * optimization: bignum printing speed has been improved by 20-40%
1035 (depending on the bignum size.)
1036 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1038 * bug fix: the cache used by the CLOS to store precomputed effective
1039 methods, slot offsets, and constant return values is now thread and
1041 * bug fix: generic function dispatch function updating is now thread
1042 and interrupt safe (in the sense that the known issues have been
1044 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1045 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1046 * bug fix: asdf systems with dependencies to the SB-POSIX or
1047 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1048 * bug fix: interrupt safety of applicable method computation has been
1051 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1052 * new contrib: sb-cover, an experimental code coverage tool, is included
1053 as a contrib module.
1054 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1055 significantly faster.
1056 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1057 produce more efficient code on x86-64 if the compiler can determine
1058 that (+ INDEX <constant>) does not require a bounds check and FOO
1059 has an element type at least 8 bits wide.
1060 * enhancement: a new, experimental synchronous timeout facility is
1061 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1062 * enhancement: when a symbol name conflict error arises, the
1063 conflicting symbols are always printed with a package prefix.
1064 (thanks to Kevin Reid)
1065 * enhancement: stepping is now once again supported on the SPARC and
1066 MIPS platforms. (It is also now more likely to work on CheneyGC
1068 * enhancement: sb-sprof can now also track and report accurate call
1070 * bug fixes: the treatment of non-standard subclasses of
1071 SB-MOP:SPECIALIZER is more correct.
1072 * incompatible change: PURIFY no longer copies the data from the
1073 dynamic space into the static and read-only spaces on platforms
1074 that use the generational garbage collector
1075 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1077 * bug fix: GC race condition occasionally resulting in crashes with
1078 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1080 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1082 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1083 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1084 * bug fix: an asynchronous interrupt could previously leave the
1085 system running with GC inhibited.
1086 * bug fix: a DECLARE form evaluated at top-level now causes an error
1087 rather than silently (or verbosely) returning NIL.
1088 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1089 result in a error being signalled due to source form lookup errors.
1090 (reported by Peter Graves)
1092 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1093 * incompatible change: removed writer methods for host-ent-name,
1094 host-ent-addresses -- changing the values did not update the DNS
1096 * minor incompatible change: changed experimental JOIN-THREAD interface
1097 * documentation: the manual now lists reader and writer methods
1098 in class slot documentation sections. (thanks to Richard M Kreuter)
1099 * documentation: unwinding from asyncronous events has been
1100 documented as unsafe.
1101 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1102 in multithreaded application code.
1103 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1104 platforms. (thanks to James Anderson for the optimization hint)
1105 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1107 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1108 variants no longer cons.
1109 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1110 their NOT- variants no longer cons.
1111 * optimization: EQUAL hash tables no longer use SXHASH for objects
1112 of all data types, but instead use an EQL hash for types for which
1113 EQUAL is the same as EQL.
1114 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1115 are significantly faster.
1116 * optimization: new STRING-OUTPUT-STREAM implementation is much
1117 faster for large outputs and conses 30% less on average.
1118 * enhancement: XREF information is now collected for references made
1119 to global variables using SYMBOL-VALUE and a constant argument.
1120 * enhancement: SIGINT now causes a specific condition
1121 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1122 * bug fix: FILE-POSITION used to signal an error in some cases where
1123 ANSI requires it to return NIL.
1124 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1125 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1126 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1128 * bug fix: bad type declaration in the CLOS implementation has
1129 been fixed. (reported by James Anderson)
1130 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1131 (thanks to Lutz Euler)
1132 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1133 required by the CLHS. (reported by Samium Gromoff)
1134 * bug fix: dead unbound variable references now signal an error.
1135 (reported by Marco Monteiro)
1136 * bug fix: / with an unused value was being deleted in safe code.
1137 (thanks to Marco Monteiro and Kevin Reid)
1138 * bug fix: number of characters that can be written onto a single
1139 line in a file is unlimited.
1140 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1141 been fixed by inhibiting interrupts for when GC is disabled.
1142 * bug fix: some interrupt safety issues with GETHASH, (SETF
1143 GETHASH), CLRHASH and REMHASH have been fixed.
1144 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1145 specifier no longer causes infinite recursion.
1146 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1147 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1148 * bug fix: an &environment argument with the correct variable information
1149 is passed to macros that are expanded during byte compilation.
1150 (reported by Samium Gromoff)
1151 * bug fix: a logic error was causing the hash function for bignums to
1152 have excessive amounts of collisions. (reported by Faré Rideau)
1153 * bug fix: modifying the contents of an array could change the return
1154 value of SXHASH on that array, which is only allowed for strings
1155 and bit vectors. (bug introduced in 0.9.16)
1156 * improvement: the x86-64/darwin port now passes all tests (except
1157 for the debugger tests) but should still be considered
1158 experimental until this is fixed.
1159 * improvement: a style-warning is signaled for CASE (etc) clauses with
1160 duplicate keys. (thanks to Kevin Reid)
1161 * improvement: macos/x86 and macos/x86-64 now use mach exception
1162 handlers for dealing with illegal instructions (for trapping and
1163 error handling) and memory protection violations (for GC).
1165 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1166 * new platform: experimental support for x86-64/darwin (MacOS).
1167 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1168 and getnameinfo sockets functions are used instead of gethostbyaddr
1169 and gethostbyname, on platforms where the newer functions are available.
1170 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1172 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1173 don't print the startup banner, but behave as if --noinform was passed
1174 as a command line argument. (thanks to Kevin Reid)
1175 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1176 * optimization: code using alien values with undeclared types is much faster.
1177 * optimization: the compiler is now able to open code SEARCH in more cases.
1178 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1179 * bug fix: using standardized COMMON-LISP special variables as loop
1180 variables no longer signals bogus package lock violations. (reported
1182 * bug fix: declaring local loop variables to be of a range-limited type
1183 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1184 (reported by Andras Simon)
1185 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1186 bugs remain on x86-64.)
1187 * bug fix: the #= and ## reader macros now interact reasonably with
1188 funcallable instances.
1189 * bug fix: type-checks for function arguments were compiled using the
1190 compiler policy settings of the wrong lexical environment (in 1.0.2
1192 * bug fix: SHADOW accepts characters as string designators, as required
1193 by the spec (thanks to Eric Marsden)
1194 * bug fix: fixed GC safety issues when foreign functions are called with
1195 non-base strings as arguments
1196 * bug fix: more consistent error output for fatal-compiler-warnings, like
1198 * bug fix: functions with proper names were showing up as NIL in
1199 backtraces (reported by Edi Weitz, regression in 1.0.2)
1201 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1202 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1203 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1204 produce more efficient code on the x86 if the compiler can determine
1205 that (+ INDEX <constant>) does not require a bounds check and FOO
1206 has an element type at least 8 bits wide.
1207 * bug fix: references to undefined variables are handled the same way
1208 in toplevel forms as in the normal compiler
1209 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1211 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1212 (thanks to Jon Buller)
1213 * improvement: faster compilation times for complex functions
1214 * improvement: added readlink support to SB-POSIX (thanks to Richard
1217 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1218 * improvement: experimental support for mach exception handling on
1219 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1221 * improvement: support for GBK external format.
1222 (thanks to Chun Tian (binghe))
1223 * improvement: the debugger now displays variables that have been closed
1224 over, in code compiled with (DEBUG 2) or higher
1225 * improvement: support for executable cores on NetBSD (thanks to
1227 * new feature: added a RESTART-FRAME debugger command
1228 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1229 be used to provide an implementation for FILE-POSITION on Gray streams
1230 (thanks to Eric Marsden)
1231 * new feature: add syslog, openlog and closelog support to SB-POSIX
1232 (thanks to Richard Kreuter)
1233 * optimization: the function call overhead in code compiled with
1234 a high DEBUG optimization setting is significantly
1235 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1236 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1237 (thanks to Tony Martinez)
1238 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1239 evaluated once (reported by Kevin Reid)
1240 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1241 works again (thanks to Kilian Sprotte)
1242 * bug fix: an error is signaled for tagbodies with duplicate tags
1243 (thanks to Stephen Wilson)
1244 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1245 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1246 stack frames from alien callbacks.
1247 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1248 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1249 65k pages (thanks to David Woodhouse)
1250 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1252 changes in sbcl-1.0.1 relative to sbcl-1.0:
1253 * new platform: FreeBSD/x86-64, including support for threading.
1254 * new feature: the compiler stores cross-referencing information
1255 about function calls (who-calls), macroexpansion (who-macroexpands)
1256 and special variables (who-binds, who-sets, who-references) for code
1257 compiled with (< SPACE 3). This information is available through the
1258 sb-introspect contrib.
1259 * new feature: users may subclass SEQUENCE, and have instances of
1260 these classes interoperate with standard Common Lisp functions if
1261 a number of methods are defined. (This feature is experimental
1262 and the interface subject to change based on feedback from SBCL
1263 users and the general community)
1264 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1265 x86/x86-64, rather than the previous fixed depth of 8
1266 * improvement: another pthread back-end of mutex "pthread-futex".
1267 * bug fix: non-ascii command-line arguments are processed correctly
1268 (thanks to Yaroslav Kavenchuk)
1269 * bug fix: non-required arguments were not passed correctly when a method
1270 defined using DEFMETHOD was called from a mop-generated method using
1271 CALL-NEXT-METHOD (reported by Pascal Costanza)
1272 * bug fix: recursion is now permitted in accessors through
1273 SLOT-UNBOUND. (reported by Pascal Costanza)
1274 * bug fix: an error was signaled at startup if the HOME environment
1275 variable was defined, but had an empty value (reported by Peter Van Eynde)
1276 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1277 signal a PROGRAM-ERROR, not a BUG.
1278 * bug fix: SB-POSIX:READDIR works when built with large file support.
1279 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1281 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1282 for better automatic indentation support. (thanks to Matt Pillsbury)
1283 * optimization: loading generic functions no longer takes O(n^2) time,
1284 proportional to the amount of methods in the generic function
1285 (reported by Todd Sabin and Jeremy Brown)
1286 * optimization: the FIND and POSITION family of sequence functions
1287 are significantly faster on arrays whose element types have been
1289 * improvements to the Windows port:
1290 ** Intermittent heap corruption problems have been fixed. (thanks
1291 to Alastair Bridgewater)
1292 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1294 ** Lisp is able to unwind foreign exception frames from alien
1295 callbacks. (thanks to Alastair Bridgewater)
1297 changes in sbcl-1.0 relative to sbcl-0.9.18:
1298 * improvement: experimental support for threading on FreeBSD/x86.
1299 (thanks to NIIMI Satoshi)
1300 * improvement: runtime option --dynamic-space-size can be used
1301 to set the size of the dynamic space reserved on startup.
1302 * improvement: floating point modes in effect are now saved in
1303 core, and restored on startup.
1304 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1305 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1306 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1307 threads are not running after *SAVE-HOOKS* have run.
1308 * improvement: writes to CLOS instance slots are type-checked in code
1309 compiled with (SAFETY 3)
1310 * improvement: floating-point exception handling on FreeBSD (thanks to
1312 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1313 (thanks to Zach Beane)
1314 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1316 * improvement: added support for the Shift-JIS external format.
1317 (contributed by NIIMI Satoshi)
1318 * improvement: callbacks are supported on Linux/PPC. (thanks to
1320 * bug fix: compiler bug triggered by a (non-standard) VALUES
1321 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1322 * bug fix: file compiler no longer confuses validated and already
1323 dumped structurres. (reported by Kaersten Poeck)
1324 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1325 fill-pointer signals a type-error as required. (thanks to
1327 * bug fix: disassemly of funcallable instances works.
1328 * bug fix: single stepping on PPC.
1329 * bug fix: fix thread-safety problems in the type system (generally
1330 manifesting as nonsensical errors like "STRING is a bad type specifier
1331 for sequences" or "The value 1 is not of type FIXNUM")
1332 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1333 (reported by Josip Gracin)
1334 * bug fix: an error is signaled for attempts to displace arrays with
1335 incompatible element types (thanks to Mario Mommer)
1336 * bug fix: more correct handling of wide characters in debug info
1337 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1338 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1339 and don't cause extra consing
1340 * optimization: MAP and MAP-INTO are significantly faster on vectors
1341 whose elements types have been declared.
1342 * Improvements to SB-SPROF:
1343 ** Support for allocation profiling
1344 ** Reduced profiling overhead, especially for long profiling runs
1345 * Improvements to the Windows port:
1346 ** floating point exceptions are now reported correctly.
1347 ** stack exhaustion detection works partially.
1348 ** more accurate GET-INTERNAL-REAL-TIME.
1349 ** better RUN-PROGRAM behaviour in case of errors in the child
1351 ** PROBE-FILE now simplifies pathnames correctly.
1352 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1353 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1354 1st 1970 (although time timezone data will be unreliable).
1355 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1357 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1358 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1359 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1361 * bug fix: two potential GC deadlocks affecting threaded builds.
1362 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1363 returns T (reported by Anton Kazennikov)
1364 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1365 with non-variable places
1366 * bug fix: remove a race condition in the setting of
1367 funcallable-instance functions, this should make threaded CLOS
1368 code more stable against memory faults.
1369 * bug fix: corruption of specials when unbinding is interrupted by an
1370 asynchronous unwind (reported by Hannu Koivisto)
1371 * improvement: the debugger will now also display local variables that
1372 are only used once, for code compiled with a DEBUG optimization quality
1375 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1376 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1377 * incompatible change: External-format support for FFI calls. The
1378 SB-ALIEN:C-STRING no longer implies an ASCII
1379 external-format. Instead the string is subject to external-format
1380 conversion. Additionally return values of type SB-ALIEN:C-STRING
1381 are by default of type (SIMPLE-ARRAY CHARACTER), not
1382 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1383 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1384 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1385 * incompatible change: SB-EXT package no longer contains the
1386 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1387 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1389 * incompatible change: the single-stepper is no longer available
1390 on Alpha, Mips and Sparc platforms.
1391 * minor incompatible change: the direct superclasses of
1392 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1393 not (STANDARD-OBJECT FUNCTION). This makes the
1394 class-precedence-lists of GENERIC-FUNCTION and
1395 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1397 * minor incompatible change: the default stream external format on
1398 non-unicode SBCL is no longer detected from the locale, but is always
1400 * new feature: Add a version of evaluator that uses an interpreter instead
1401 of the compiler. EVAL still uses the compiler by default, to switch it
1402 to use the interpreter, set the value of the variable
1403 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1404 * minor incompatible change: the single-stepper REPL has been merged
1405 with the normal debugger (see the "Stepping" heading of the debugger help
1406 for more details). The debugger command STEP will no longer switch
1407 to the single-stepper REPL.
1408 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1409 for a type now works.
1410 * bug fix: loading of default sysinit file works. (thanks to Leonid
1412 * bug fix: better detection of circularities in the file-compiler.
1413 (reported by Marco Monteiro)
1414 * bug fix: the CL pathname functions now work with files that have
1415 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1416 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1417 systems with Unix98 pty semantics.
1418 * bug fix: ASDF-INSTALL will now work with bsd tar.
1419 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1421 * bug fix: timers expiring in dead threads no longer cause a
1422 type-error (reported by Paul "Nonny Mouse").
1423 * bug fix: thanks to more lightweight single-stepper instrumentation,
1424 code compiled with (DEBUG 3) will compile and execute significantly faster,
1425 and will have more accurate type-inferencing than before
1426 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1427 whose bindings are modified
1428 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1429 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1430 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1431 CL:SOFTWARE-VERSION with proper version
1433 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1434 * feature: implemented the READER-METHOD-CLASS and
1435 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1436 as specified by AMOP.
1437 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1439 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1440 (thanks to Lutz Euler)
1441 * optimization: hashing of general arrays and vectors has been
1442 improved. (reported by Any Fingerhut)
1443 * enhancement: SB-INTROSPECT is now able to find definitions of
1444 profiled functions. (thanks to Troels Henriksen)
1445 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1446 as well, allowing compiler-macros for SETF-functions to expand.
1447 * enhancement: step-instrumentation no longer wraps known
1448 single-value functions with multiple-value context, allowing
1449 better type inference.
1450 * fixed bug #337: use of MAKE-METHOD in method combination now works
1451 even in the presence of user-defined method classes. (reported by
1452 Bruno Haible and Pascal Costanza)
1453 * fixed bug #339(c): if there are applicable methods not part of any
1454 long-form method-combination group, call INVALID-METHOD-ERROR.
1455 (reported by Bruno Haible)
1456 * fixed bug #361: the :FUNCTION initarg in the protocol for
1457 initialization of methods can now be used to override
1458 internally-produced optimized functions. (reported by Bruno
1460 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1461 system-provided lambda expression no longer cause warnings about
1462 unbound #:|pv-table| symbols.
1463 * bug fix: improved the handling of type declarations and the
1464 detection of violations for keyword arguments with non-constant
1466 * bug fix: potentially erronous calls to PATHNAME and
1467 MERGE-PATHNAMES were being flushed in some cases.
1468 (reported by Richard Kreuter)
1469 * bug fix: compiled calls to TYPEP were mishandling obsolete
1470 instances. (reported by James Bielman and Attila Lendvai)
1471 * bug fix: format strings with ~> without matching ~< no longer
1472 trigger an AVER, but signal an understandable error instead.
1473 (reported by Antonio Martinez)
1474 * bug fix: specifying an output-file without a pathname-type for
1475 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1476 of input-file instead of "fasl". (reported by Robert Dodier)
1477 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1478 (reported by James Y Knight).
1479 * bug fix: compiler-macros-function did not consider the environment
1480 argument for shadowing by local functions.
1481 * bug fix: compiler-macros expansion was inhibited by local INLINE
1483 * bug fix: inline expansions of known functions were subject to
1484 step-instrumentation in high debug policies, leading to problems
1485 with type-inference.
1486 * bug fix: compiler failed to differentiate between different CONS
1487 types in some cases.
1488 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1489 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1490 * bug fix: #368: incorrect use of expressed vs. upgraded array
1492 * bug fix: #306a: more precise unions of array types.
1493 * thread-safety improvements:
1494 ** CONDITION-WAIT could return early on Linux, if the thread was
1495 interrupted and subsequently continued with SIGCONT.
1496 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1498 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1499 * added support for the ucs-2 external format. (contributed by Ivan
1501 * minor incompatible change: pretty printing of objects of type
1502 (cons symbol) is, in the default pprint-dispatch-table, now
1503 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1505 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1506 called later in a class's lifetime, possibly as late as when the
1507 first instance of the class is created. Previously,
1508 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1509 class became finalizeable.
1510 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1511 for multibyte external-format streams. (thanks to "vbzoli")
1512 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1513 with :ALLOCATION :CLASS inherited from superclasses of the
1515 * fixed bug: anonymous classes can now be created using the :NAME
1516 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1517 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1518 * fixed bug: core-files saved with :EXECUTABLE T can again be
1519 executed when SBCL_HOME isn't set. (reported by James Knight)
1520 * fixed bug: toplevel LOCALLY forms with declarations could
1521 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1522 * fixed bug: printing from several different threads using different
1523 values of *print-case* could cause invalid output, due to
1524 some internal special variables of the printer not being bound
1525 thread-locally (reported by Max Mikhanosha)
1526 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1527 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1528 (reported by Pascal Costanza)
1529 * fixed bug: FINALIZE-INHERITANCE is called from
1530 REINITIALIZE-INSTANCE on classes when the class has previously
1531 been finalized, as required by AMOP.
1532 * minor code generation optimizations:
1533 ** better register allocation in CLOS dispatching functions
1534 ** overflow detection when coercing signed bytes to fixnums on x86-64
1535 ** is now implemented with one IMUL instruction instead of three shifts
1536 ** more efficient bit-vector access on x86 and x86-64
1537 ** more efficient access to raw structure slots on x86 and x86-64
1538 * fixed some bugs revealed by Paul Dietz' test suite:
1539 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1540 return its argument.
1542 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1543 * feature: thread support on Solaris/x86, and experimental thread support
1545 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1547 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1548 default method for SLOT-UNBOUND.
1549 * minor incompatible change: prevent the user from specializing the
1550 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1551 somewhat counter to the intent of the protocol, I (CSR) think, and
1552 additionally it just doesn't work in SBCL as currently
1553 implemented, thanks to optimizations (that are always valid for
1554 the other three SLOT-VALUEish functions, but not for the setter).
1555 * minor incompatible change: the :SB-LDB feature is now enabled by
1556 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1557 the low-level debugger.
1558 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1559 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1560 down to an SB-SYS:FD-STREAM, allowing direct communication in
1561 more cases. Temporary files and pipes are still used as a fallback
1563 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1564 on the non-reentrant C functions localtime(3) and gmtime(3).
1565 * bug fix: global optimization policy was not visible in LOCALLY and
1567 * bug fix: class objects can be used as specializers in methods.
1568 (reported by Pascal Costanza)
1569 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1570 with a type error. (reported by blitz_ on #lisp)
1571 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1572 failed with a type error. (reported by Pascal Bourguignon)
1573 * bug fix: merging pathnames against defaults with :DIRECTORY
1574 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1575 (reported by James Y Knight)
1576 * bug fix: saving large (>2GB) cores on x86-64 now works
1577 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1578 constant index and a (simple-array (signed-byte 32)) array
1579 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1580 error (patch by Robert J. Macomber)
1581 * feature: TIME now displays the amount of run-time spent in GC
1582 * bug fix: The debugger now does a better job of respecting
1583 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1584 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1585 workaround for bug 403.)
1586 * bug fix: floating point exception handling now works on FreeBSD
1587 (thanks to NIIMI Satoshi)
1588 * fixed some bugs revealed by Paul Dietz' test suite:
1589 ** MISC.641: LET-conversion were not supposed to work in late
1591 * improvements to the Win32/x86 port:
1592 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1593 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1595 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1596 * new feature: source path information is generated for macro-expansion
1597 errors for use in IDE's like Slime (thanks to Helmut Eller)
1598 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1599 * bug fix: compiler does not loop forever on an invalid type in
1601 * improvement: compilation of most CLOS applications is significantly
1603 * optimization: added a limited bytecode compiler for simple toplevel
1604 forms, speeding up compilation and FASL loading
1605 * bug fix: the statistical profiler now properly distinguishes anonymous
1608 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1609 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1610 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1611 into subclasses of the finalized class. Now user calls to
1612 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1613 system return before any subclasses are finalized.
1614 * minor incompatible change: The reader no longer ignores errors
1615 regarding non-existent packages in #+ and #- feature tests.
1616 * new feature: command line options --no-sysinit, --no-userinit to
1617 inhibit loading the corresponding init files
1618 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1619 for sending data through UDP sockets (thanks to François-René Rideau)
1620 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1621 error is signalled instead (thanks to François-René Rideau)
1622 * minor incompatible change: Error signalling behaviour of lexical
1623 operations violating package locks has changed slightly. Refer to
1624 documentation on package locks for details.
1625 * enhancement: EVAL can process IF-expressions without resorting to the
1627 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1628 constant-folded properly due to missing out-of-line functions.
1629 (reported by Mika Pihlajamäki)
1630 * bug fix: LISTEN sometimes returned T even in cases where no data was
1631 immediately available from the stream
1632 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1633 were reversed. (reported by Levente Mészáros)
1634 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1635 when given a vector displaced to an adjustable array. (reported
1637 * bug fix: derivation of float boundaries from numbers outside the
1638 appropriate float range (reported by John Wiseman)
1639 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1641 * bug fix: precomputing cache entries for generic functions with
1642 some subclasses of specializers as yet invalid does not attempt to
1643 fill a cache line with a negative offset. (reported by Levente
1645 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1646 allow condition class objects as arguments to DOCUMENTATION and
1647 (SETF DOCUMENTATION); only find and set documentation for
1648 structure names for the STRUCTURE doc-type. (suggested by Gary
1650 * improvements to the Win32/x86 port:
1651 ** (user-homedir-pathname) and default initialization file
1652 locations now know about the user's "Documents and Settings"
1653 directory (thanks to Yaroslav Kavenchuk)
1654 ** run-program is implemented (thanks to Mike Thomas)
1655 ** sockets support (thanks to Timothy Ritchey)
1656 ** better backtrace support (thanks to Alastair Bridgewater)
1657 ** sb-grovel supported
1658 ** asdf-install and sb-posix work somewhat
1659 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1660 * improvements to the Solaris/x86 port:
1661 ** works on Solaris 11/Solaris Express
1662 ** floating-point exception handling support
1663 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1664 * fixed some bugs revealed by Paul Dietz' test suite:
1665 ** REMOVE-METHOD returns its generic function argument even when
1666 the method is not one of the generic functions' methods.
1667 ** objects declared as MEMBER types can be admissible arguments to
1668 structure accessors.
1669 ** printing characters should simply be printed by the FORMAT ~:C
1671 ** compiler failure when compiling functions with hairy constant
1672 defaults for optional parameters.
1673 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1674 function, which is already optimized.
1676 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1677 * new platform: experimental support for SBCL x86/Darwin, including
1678 MacOS X 10.4.5 on Intel.
1679 * new feature: Unicode character names are now known to the system
1680 (through CHAR-NAME and NAME-CHAR).
1681 * new feature: the filesystem location of SBCL's core file is
1682 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1683 * minor incompatible change: the contrib modules SB-POSIX and
1684 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1685 this change is to make it easier to distribute
1686 location-independent binaries.
1687 * bug fix: as implied by AMOP, standardized classes no longer have
1688 slots named by external symbols of public packages. (reported by
1690 * optimization: calling functions via constant symbols -- as in
1691 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1692 via the function object as in (FUNCALL #'FOO).
1693 * optimization: on x86 and x86-64, the calling convention for the
1694 case of dealing with an unknown number of values has been altered
1695 to be friendlier to the prediction heuristics implemented,
1696 particularly with reference to CALL and RET pairing. (thanks to
1697 Alastair Bridgewater)
1698 * optimization: on x86, the code for access to thread-local symbol
1699 values and binding/unbinding of thread-local symbols is smaller.
1700 (thanks to Alastair Bridgewater)
1701 * enhancement: CONSTANTP is now able to determine constantness of
1702 more complex forms, including calls to constant-foldable standardized
1703 functions and some special forms beyond QUOTE.
1704 * fixed bug: occasional GC crashes on Solaris/x86
1705 * optimization: x86-64 supports stack allocation of results of simple
1706 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1707 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1708 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1709 (thanks to James Knight)
1710 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1711 by the standard (thanks to Stephen Compall)
1713 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1714 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1715 be used for bundling the runtime and the core file into one
1716 executable binary. This feature is not currently supported on all SBCL
1717 platforms. (thanks to James Bielman and NIIMI Satoshi)
1718 * new feature: a generational or ephemeral garbage collector is now
1719 the default on the PowerPC platform (both Linux and Darwin). The
1720 old Cheney (stop and copy) collector is a build-time option.
1721 (thanks to Cyrus Harmon, after Raymond Toy)
1722 * minor incompatible change: the method by which SBCL finds its
1723 contributed modules has changed; it no longer relies on symbolic
1724 links from an $SBCL_HOME/systems directory, but searches directly
1725 in the subdirectories of $SBCL_HOME.
1726 * enhancement: the dynamic heap size on the Linux/PPC platform is
1727 markedly larger, even using the older Cheney garbage collector.
1728 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1729 certain complicated string types. (reported by Gary King)
1730 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1731 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1732 * fixed bug: DOCUMENTATION on structures no longer signals an
1733 error if no structure type of the right name exists. (reported by
1735 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1736 applicable non-standard primary or :AROUND method on
1737 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1738 no longer cause unbound variable errors. (reported by Kevin Reid)
1739 * fixed bug: metacircle resolution in cases where methods have slots
1740 added before the slots from STANDARD-METHOD. (reported by Jean
1742 * fixed bug: the Power PC assembly code for calling into lisp
1743 sometimes computed its return address wrongly (depending on the
1744 15th bit of the address, fixed at link time). This used to
1745 manifest itself in a segmentation violation while building PCL.
1746 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1747 many others over the years)
1748 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1749 the stack pointer (treated as a signed integer) is negative.
1750 (thanks to Peter van Eynde)
1752 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1753 * new platform: experimental support for the Windows operating
1754 system has been added. (thanks to Alastair Bridgewater)
1755 * fixed several bugs in and robustified the PPC FFI (including
1756 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1757 * bug fix: allow non-simple string symbol names (reported by Paul
1759 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1761 * bug fix: saving a core corrupted callbacks on x86/x86-64
1762 * bug fix: closed a loophole in metacircularity detection and
1763 grounding in the PCL implementation of CLOS.
1764 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1765 (reported by tomppa on #lisp)
1766 * bug fix: clear the direction flag on Lisp -> C transitions, as
1767 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1768 (reported by Andrej Grozin and Hendrik Maryns)
1769 * optimization: major improvements to GC efficiency on GENCGC platforms
1770 * optimization: faster implementation of EQUAL
1771 * optimization: emit more efficient opcodes for some common
1772 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1773 * optimization: several other minor code-generation improvements on x86-64
1774 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1776 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1777 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1778 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1779 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1780 by ANSI as a generic function, and for consistency (SETF
1781 GENERIC-FUNCTION-NAME) is treated likewise.
1782 * fixed bug #233.b: make constraint propagation notice when a variable
1783 value is changed after it is referenced but before it is used
1784 * fixed bug #296: no more arbitrary behaviour from filenames with
1785 odd characters as --load arguments. (reported by Adam Warner)
1786 * fixed bug #390: :CHARACTER-SET pathname components now work as
1787 expected. (reported by Tim Daly Jr)
1788 * fixed bug #391: complicated :TYPE intersections in slot
1789 definitions no longer cause an error in PCL internals.
1790 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1791 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1792 returning the number of octets which would be written to the
1793 file-stream. (thanks to Robert J. Macomber)
1794 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1795 arguments to the internal stream functions. (thanks to David
1797 * bug fix: stack exhaustion is now handled on the x86/SunOS
1798 platform. (thanks to Daisuke Homma)
1799 * bug fix: more accurate ROOM results on GENCGC platforms
1800 * optimization: improved type inference for arithmetic-for
1801 index variables in LOOP
1802 * optimization: faster floating-point SQRT on x86-64
1803 * fixed some bugs revealed by Paul Dietz' test suite:
1804 ** DOCUMENTATION returns NIL instead of "" for method combinations
1805 that don't have a docstring
1807 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1808 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1809 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1810 therefore are not customizeable by user code (as seems to be at
1811 least permitted and maybe required by AMOP). As a consolation,
1812 however, the SBCL implementation of these functions now calls
1813 REINITIALIZE-INSTANCE as specified by AMOP.
1814 * bug fix: slot-definition documentation is propagated as per ANSI
1815 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1816 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1817 argument, as do eslotd initialization methods. (from Pascal
1818 Costanza's "Closer" project)
1819 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1820 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1822 * bug fix: it is now possible to have more than one subclass of
1823 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1824 (reported by Bruno Haible, Pascal Costanza and others)
1825 * bug fix: the dependent update protocol now works for generic
1826 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1827 and Pascal Costanza)
1828 * bug fix: condition-class instances corresponding to
1829 DEFINE-CONDITION forms are now created eagerly. (reported by
1830 Kalle Olavi Niemitalo on comp.lang.lisp)
1831 * bug fix: floating point printing is more accurate in some
1832 circumstances. (thanks to Simon Alexander)
1833 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1834 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1835 * bug fix: callbacks on OS X now preserve stack-alignment.
1836 (thanks to Cyrus Harmon)
1837 * enhancement: the x86-64 disassembler is much better at
1838 disassembling SSE instructions. (thanks to Lutz Euler)
1839 * enhancement: CHECK-TYPE on a variable now allows type-inference
1840 (thanks to Vincent Arkesteijn)
1841 * optimization: improved performance of EUC-JP external format.
1842 (thanks to NIIMI Satoshi)
1843 * optimization: performance improvements to IO on file streams of
1844 :ELEMENT-TYPE CHARACTER
1845 * optimization: much faster memory allocation on x86-64
1846 * optimization: faster garbage collections (latency and throughput)
1848 * optimization: faster bignum subtraction and division on x86 and x86-64
1849 (thanks to Lutz Euler)
1850 * optimization: more accurate type-inference for loops that use a
1851 floating point index variable or a negative step.
1853 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1854 * bug fix: add a workaround to SBCL looping infinitely at startup on
1855 Linux kernels with apparently buggy implementations of personality().
1856 (thanks to Svein Ove Aas)
1857 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1858 (thanks to David Lichteblau)
1859 * bug fix: local bindings shadow global symbol macros for
1860 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1861 * optimization: non-open coded uses of numeric comparison operators
1862 (e.g. >) no longer cons when called with more than one parameter
1863 on platforms supporting dynamic-extent allocation.
1864 * enhancement: saving cores with foreign code loaded is now supported
1865 on MIPS/Linux in addition to the previously supported platforms.
1866 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1867 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1868 * bug fix: division by zero in sb-sprof when no samples were collected
1869 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1870 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1871 (thanks to Alexander Kjeldaas)
1872 * new feature: ignoring the return values of destructive functions
1873 like NREVERSE signals a compile-time style-warning.
1874 (thanks to Kevin Reid)
1875 * new feature: the alignment of alien structure fields can be
1876 explicitly specified. (thanks to Cyrus Harmon)
1877 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1878 and dump core on SIGQUIT
1880 ** incompatible change: threads do not inherit values of specials
1881 from their parents (see manual)
1882 ** bug fix: threads stacks belonging to dead threads are freed by the
1883 next exiting thread, no need to gc to collect thread stacks anymore
1884 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1885 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1886 ** bug fix: dynamic variable and thread start related gc lossage
1887 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1889 * fixed some bugs revealed by Paul Dietz' test suite:
1890 ** SUBTYPEP is slightly more accurate on heinously complicated
1891 CONS types where some of the members have uncertain (in the
1892 NIL, NIL sense) type relationships to each other.
1894 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1895 no longer purified unless :PURIFY T is explicitly specified.
1896 ** Non-purified cores are significantly smaller than before
1898 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1899 * new feature: timers based on Zach Beane's excellent timer package
1900 * added support for the following external formats: koi8-u,
1901 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1902 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1903 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1904 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1905 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1906 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1907 * incompatible change: a threaded SBCL will no longer revert to
1908 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1909 * bug fix: interrupts are disabled until startup is complete; no
1910 more sigsegvs when receiving a signal to soon
1911 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1913 * bug fix: add a workaround for the memory randomization features in
1914 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1915 workaround will only be in effect on systems with the proc filesystem
1917 * bug fix: printing objects of type HASH-TABLE signals a
1918 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1920 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1921 have been running for over 50 days. (reported by Gilbert Baumann)
1922 * bug fix: the logic for getting names of functions gets less
1923 confused when confronded with alternate-metaclass
1924 funcallable-instances. (reported by Cyrus Harmon)
1925 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1926 consistent, even on internal alternate-metaclass objects.
1927 * bug fix: flush closure information collected by physical
1928 environment analysis prepass before the main pass. (bug reported
1930 * bug fix: compiler pack phase does not modify a hashtable, which is
1931 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1932 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1933 may be expanded. (reported by Alexander <malishev> on c.l.l)
1934 * bug fix: no more style-warnings when compiling code using LAST
1935 under high-SPEED low-SPACE settings. (reported by David Wallin
1937 * fixed some incompatibilities between SBCL's MOP and the MOP
1939 ** the METAOBJECT class is now implemented;
1940 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1941 STANDARD-OBJECT, as required;
1942 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1943 now compatible (as required by VALIDATE-SUPERCLASS); there
1944 remains a consistency requirement over the presence or absence
1945 of the FUNCTION class in the superclass list of finalized
1946 classes; see the manual for more details;
1947 ** the :AROUND method for COMPUTE-SLOTS on
1948 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1949 requested slot ordering.
1951 ** bug fix: parent thread now can be gc'ed even with a live
1953 ** bug fix: binding a special with PROGV to no value is not
1954 the same as that symbol not having been bound (thanks to
1956 ** bug fix: binding specials is thread safe (thanks to
1958 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1959 and SB-SPROF do not die with 'no handler for signal XX in
1960 interrupt_handle_now(..)' anymore
1961 ** bug fix: WITH-TIMEOUT works with multiple running threads
1962 * fixed some bugs revealed by Paul Dietz' test suite:
1963 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1964 the :method-class keyword argument.
1966 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1967 * new port: the Solaris operating system on x86 processors is now
1968 mostly supported, though some rough edges in the environment
1969 remain. (thanks to Daisuke Homma)
1970 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1971 space for its heap. (thanks to Thiemo Seufer)
1972 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1973 closures. (thanks to Thiemo Seufer)
1974 * minor incompatible change: eof selects abort in the debugger.
1975 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1976 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1978 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1979 deprecated, and will go away in a future revision of SBCL.
1980 * minor incompatible change: GC-ON and GC-OFF are no longer
1981 implemented with a counter, it does not matter how many times gc
1982 is switched on or off
1983 * bug fix: discriminating functions for generic function classes
1984 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1985 make invalid assumptions about method precedence order. (reported
1987 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1988 platforms. (thanks to Thiemo Seufer)
1989 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1990 * bug fix: correct pathname printing with printer escaping is on.
1991 (thanks to Kevin Reid)
1992 * bug fix: complex VOP definitions in "user-space" no longer trigger
1993 package locks. (reported by Zach Beane)
1994 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1995 for funcallable-instance functions, and is no different from
1997 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1998 characters in the current readtable. (reported by Nicholas Neuss)
1999 * bug fix: SUBTYPEP on various CONS types returns more a more
2000 accurate acknowledgment of its certainty.
2001 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2002 lists in some cases. This partially fixes bug 384.
2003 * flush all standard streams before prompting in the REPL and the
2005 * bug fix: signal handling and triggering gc do not conflict
2006 directly anymore, in particular a high frequency sb-sprof does
2007 not prevent gc from running
2008 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2009 approximation for timezone and DST information between the
2010 universal time epoch and the smallest negative 32-bit time_t.
2011 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2012 year 1899 so long as the encoded time is non-negative.
2013 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2014 the correct answer for non-constant rotate amounts when performing
2015 an inline 32-bit rotation.
2017 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2018 there is only one thread in the session
2019 ** bug fix: memory leak for streams created in one thread and
2020 written to in another
2021 ** bug fix: lockup when compiled with gcc4
2022 ** bug fix: race that allows the gc to be triggered when gc is
2024 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2025 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2027 ** bug fix: finished threads are gc'ed properly
2028 * fixed some bugs revealed by Paul Dietz' test suite:
2029 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2030 has arguments with a different set of applicable methods from
2031 the orignal arguments.
2032 ** The type error thrown by MAP now has a correct expected-type
2034 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2035 name a compiled function.
2036 ** Three MISC tests where a large bignum was improperly coerced to
2037 a float that couldn't represent that bignum during type
2038 derivation were fixed.
2039 ** SUBTYPEP can now handle types involving the negation of a
2040 list-form FUNCTION type.
2041 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2042 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2043 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2045 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2046 * New feature: Experimental support for bivalent streams: streams
2047 opened with :element-type :default now allow character and binary
2048 (unsigned-byte 8) I/O
2049 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2050 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2052 * bug fix: no more highly sporadic "couldn't check whether ~S is
2053 readable" when reading a stream and an interrupt hits in the middle
2054 of a select system call
2055 * compiler better recognizes complex arrays (reported by Eduardo
2057 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2058 for variables on SBCL built with linkage-tables. (reported by Luis
2060 * various error reporting improvements.
2061 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2062 (Thanks to Thiemo Seufer)
2063 * bug fix: nested reader invokations work correctly
2064 * bug fix: it is possible to have simultaneous references to foreign
2065 code and foreign data with the same name.
2067 ** added x86-64 support
2068 ** incompatible change: the threading api now works with thread
2069 objects instead of thread ids
2070 ** bug fix: threads are protected from signals and interruption when
2071 starting up or going down
2072 ** bug fix: a race where an exiting thread could lose its stack to gc
2073 ** bug fix: don't halt on infinite error in threads if possible
2074 ** fixed numerous gc deadlocks introduced in the pthread merge
2075 ** bug fix: fixed thread safety issues in read and print
2076 ** bug fix: debugger doesn't hang on session lock if interrupted at
2077 an inappropriate moment
2078 ** bug fix: run-program is now thread safe(r)
2079 ** bug fix: inner with-recursive-lock no longer releases the mutex
2080 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2081 * fixed some bugs revealed by Paul Dietz' test suite:
2082 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2083 EXPECTED-TYPE slots filled.
2084 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2086 ** MAKE-CONDITION accepts classes as type-designators.
2087 ** COMPILE may never return NIL.
2088 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2089 range before calling Unix time functions
2091 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2092 * numerous signal handling fixes to increase stability
2093 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2094 * minor incompatible change: we now correctly canonize default
2095 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2096 as per the MOP, rather than the historical (INITARG INITFUNCTION
2097 INITFORM). (reported by Bruno Haible)
2098 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2099 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2100 for more information.
2101 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2102 pathname is a directory pathname.
2103 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2104 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2106 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2107 :METACLASS argument in addition to a class name. (reported by
2108 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2109 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2110 (reported by Bruno Haible; patch from Gerd Moellmann)
2111 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2113 * bug fix: more cleanups to the floating point exception handling on
2114 x86-64 (thanks to James Knight)
2115 * bug fix: the compiler does not try to constant fold calls of
2116 COERCE and BIT-* functions when they return freshly constructed
2117 objects. (reported by Nikodemus Siivola and Paul Dietz)
2118 * optimization: improved the MIPS versions of generic (in the
2119 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2120 * optimization: direct conversion of (unsigned-byte 32) to floats on
2121 the PowerPC platform.
2122 * optimization: structure instances with raw slots now use less
2123 memory, and probably show better memory locality. (thanks to
2125 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2126 are treated as requests for stack allocation on the x86-64,
2127 Alpha-32, PPC and SPARC platforms.
2128 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2129 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2130 (thanks to Tony Martinez)
2132 ** gcing a dead thread can no longer lead to lockups
2133 ** threads block signals until they are set up properly
2134 ** errno is no longer shared by threads
2135 ** interrupt-thread restores the eflags register on x86
2136 ** fixed some lockups due to gc/thread interaction
2137 * fixed some bugs revealed by Paul Dietz' test suite:
2138 ** invalid dotted lists no longer raise a read error when
2139 *READ-SUPPRESS* is T
2140 ** signal an error if a symbol that names a declaration is used
2141 as the name of a type, or vice versa
2142 ** allow using the (declare (typespec var*)) abbreviation for
2143 (declare (type typespec var*)) with all type specifiers
2144 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2145 ** always return NIL from PPRINT-POP when OBJECT is NIL
2146 ** don't signal errors when pretty-printing malformed LABELS,
2147 FLET or MACROLET forms
2148 ** declarations in a DOLIST body are also in scope for the
2150 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2152 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2155 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2156 * fixed cross-compiler leakages that prevented building a 32-bit
2157 target with a 64-bit host compiler.
2158 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2159 opened with :IF-EXISTS :OVERWRITE.
2160 * fixed bug 281: error for an invalid qualifier in a short-form method
2161 combination method is not signalled until the faulty method is called.
2162 * bug fix: iteration variable type inferrer failed to deal with open
2163 intervals. (reported by Alan Shields)
2164 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2165 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2166 or more runtime options were provided to the sbcl binary.
2167 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2168 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2169 * optimization: there's now a fast-path for fixnum arguments in the
2170 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2171 * optimization: the code generated on x86-64 is more compact thanks
2172 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2173 * bug fix: floating-point exception handling now partly works on
2174 x86-64. (Thanks to James Knight)
2175 * improvement to the MIPS backend from Thiemo Seufer: C-style
2176 64-bit long long arguments and return values to alien functions
2178 * fixed some bugs revealed by Paul Dietz' test suite:
2179 ** the type-error signalled from WARN has a filled-in DATUM slot.
2180 ** the type-error required when a stream is not associated with
2181 a file has the stream as its datum.
2182 ** type-errors on single-floats on x86-64 no longer have
2183 :INVALID-OBJECT as the datum
2184 ** the type-errors signalled for invalid function names now have
2185 a correct expected type
2186 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2187 for structures defined with a :TYPE. Documentation strings for
2188 typed structures are no longer immediately discarded
2189 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2190 broadcast streams and synonym streams. FILE-LENGTH now also works
2191 on broadcast streams.
2193 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2194 * incompatible change: the --noprogrammer option, deprecated since
2195 version 0.7.5, has been removed. Please use the equivalent
2196 --disable-debugger option instead.
2197 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2199 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2200 inoperational for a while now) has been completely removed.
2201 * null lexical environments are now printed as #<NULL-LEXENV>,
2202 significantly reducing the amount of clutter in typical backtraces.
2203 * documentation on weak pointers, finalization, and after GC hooks
2204 has been added to the manual.
2205 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2206 as other specialized array types, is much faster. SUBSEQ and
2207 COPY-SEQ on such arrays have also been sped up.
2208 * optimization: EQL is now more efficient when at least other argument
2209 is known to be of type (OR FIXNUM (NOT NUMBER)).
2210 * fixed bug: the runtime is now less vulnerable to changes in the
2211 size of the SBCL object on OS X, and virtual memory is reserved for
2212 all spaces that need to be at a fixed address.
2213 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2214 * fixed bug: finalizers and after GC hooks that cause consing are now
2216 * fixed bug: compiler error messages and summaries are now printed to
2217 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2218 * fixed inference of the upper bound of an iteration variable.
2219 (reported by Rajat Datta).
2220 * fixed bug 211e: calling local functions with duplicated constant
2221 keyword argument no longer causes a bogus style warning about an
2223 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2224 ftype declaration to be disregarded. (reported by Dave Roberts)
2225 * fixed bug 373: caused by erronous compilation of references to alien
2226 variables in the runtime on ppc/darwin.
2227 * fixed bug 376: CONJUGATE type deriver.
2228 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2229 (reported by Baughn on #lisp)
2230 * a cross-compiler bug on non-x86 platforms has been identified and
2231 fixed. (thanks to Bruno Haible)
2232 * improvements to the MIPS runtime code for increased stability.
2233 (thanks to Thiemo Seufer)
2234 * increased the maximimum compact environment size to allow
2235 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2236 * partial workaround for bug 135: don't name the function we're
2237 calling for hairy cases of EVAL, so as not to accumulate one environment
2238 entry per call to EVAL. (reported by Kevin Reid)
2239 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2240 * optimization: type testing for non-vector arrays should be faster.
2241 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2243 * bug fix: setting 31st element of a bit vector to zero did not work
2245 * bug fix: redefining a class definition which failed due to a
2246 previous accessor / function clash now works (but see BUGS entry
2247 #380 for more problems in this area). (thanks to Zach Beane)
2248 * the long form of DEFINE-METHOD-COMBINATION disables method group
2249 checking when given a single method group with pattern *. (thanks
2251 * on x86 compiler supports stack allocation of results of simple
2252 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2253 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2254 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2255 * fixed some bugs related to Unicode integration:
2256 ** the restarts for recovering from input and output encoding
2257 errors only appear when there is in fact such an error to
2259 * fixed some bugs revealed by Paul Dietz' test suite:
2260 ** MISC.549 and similar: late transformation of unsafe type
2261 assertions into derived types caused unexpected code
2263 ** SCALE-FLOAT type deriver is less wrong.
2264 ** type derivers for EXP, LOG and similar functions compute result
2265 types for complex arguments better.
2266 ** (MISC.563) CONJUGATE type deriver works for very restricted
2268 ** out-of-line type testers for character strings are available.
2269 ** EQUAL compiler transform understands specialness of objects
2271 ** accessing double-floats stored on the stack now works on x86-64.
2272 ** debugger internals could sometimes create invalid lispobjs,
2273 resulting in GC crashes.
2274 ** MISC.548: type check weakening can convert required type into
2276 ** initialization forms for bindings are not in scope of free special
2279 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2280 * incompatible change: thread support for non-NPTL systems has
2281 been removed - locking is buggy and unreliable. A threaded
2282 SBCL build will now warn at startup and refuse to create
2283 new threads, unless futex support is detected in the kernel
2284 * incompatible change: the top level REPL now has only an ABORT
2285 restart associated with it, not TOPLEVEL and ABORT as it used to.
2286 TOP and TOPLEVEL are now available as debugger commands for
2287 returning to the top level.
2288 * incompatible change: forms evaluated in the REPL now use the
2289 global optimization policy.
2290 * incompatible change: user- and system-initialization files are
2291 no longer processed with LOAD, but by READ and EVAL; hence the
2292 global optimization policy, startup package, readtable, etc,
2294 * The .fasl file format number has been incremented because of
2295 various incompatible changes.
2296 * internal entry point details and argument counts no longer appear
2297 in backtraces unless explicitly requested by setting
2298 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2299 * built-in and standard functions no longer have names like "top
2300 level local call to FOO".
2301 * fixed bug 32: functions defined in non-null lexical environments
2302 now have more legible printed representation
2303 * fixed bug 33: functions defined in non-null lexical environemnts
2304 are now more amenable to inspection by INSPECT.
2305 * workaround for bug 354: XEPs no longer appear in backtraces unless
2306 explicitly requested.
2307 * fixed bug: receiving the signal which results from attempting to
2308 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2309 SIGBUS on other *BSDs) on architectures where the C stack is also
2310 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2311 to debugger confusion or wild instability. (reported by Cheuksan
2313 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2314 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2315 (reported by Lutz Euler)
2316 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2317 compiled code. (reported by Paul Dietz)
2318 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2319 specialized parameter to a method to something that is not TYPEP
2320 the specializer is now possible.
2321 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2322 face of package deletion.
2323 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2324 pathname. (reported by David Tolpin on c.l.l)
2325 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2326 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2327 STRING-STREAM and FILE-STREAM, respectively.
2328 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2329 than previously; in addition, its test suite is now run on build.
2330 (thanks to Luke Gorrie)
2331 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2332 * optimization: added a immediate representation for single-floats
2334 * fixed some bugs revealed by Paul Dietz' test suite:
2335 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2336 ** attempting to create a package with a colliding nickname causes
2337 correctable errors to be signalled.
2338 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2339 ** several x86-64 backend bugs related to sign-extension of immediate
2342 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2343 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2344 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2346 * fixed loading of multiply forward-referenced layouts.
2347 (thanks to Cheuksan Wang)
2348 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2349 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2350 (see COMPILE-FILE documentation for details of :PRINT option)
2351 * fixed bugs 19 and 317: fixed-format floating point printing is
2352 more accurate. This also fixes a bug reported by Adam Warner
2353 related to the ~@F format directive.
2354 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2356 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2357 dispatch table if the from-char is a dispatch macro character.
2358 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2359 by the wordsize no longer ignore the last word. (reported by Lutz
2361 * fixed bug in type checking of dynamic-extent variables. (reported
2363 * optimization: sequence traversal functions use their freedom to
2364 coerce function designators to functions.
2365 * optimization: code with many calls to CLOS methods specialized on
2366 CLOS classes has had redundant type checks removed.
2367 * optimization: added declarations to speed up operations that access
2368 the internal character database (for example STRING-UPCASE)
2369 * optimization: comparison operations between floats and sufficiently small
2370 fixnums no longer create extra rationals
2371 * fixed some bugs related to Unicode integration:
2372 ** portions of multibyte characters at the end of buffers for
2373 character-based file input are correctly transferred to the
2374 start of the buffer at the next read.
2375 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2376 passing it through to OPEN.
2377 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2378 argument given to internal calls to OPEN.
2379 ** the built-in comment readers (introduced by character sequences
2380 ";" and "#|") are more forgiving to encoding errors; they will
2381 STYLE-WARN and then attempt to resync the stream at a character
2382 boundary. (thanks to Teemu Kalvas)
2383 * fixed some bugs in the x86-64 port:
2384 ** Negative short int return values from c-calls are sign-extended
2386 ** The stack is aligned to 16-bytes for c-calls, as required by
2387 the ABI. (thanks to Cheuksan Wang)
2388 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2389 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2390 for enums. (thanks to Vincent Arkesteijn)
2391 ** Multiple small optimizations and bugfixes for floating point
2393 * fixed some bugs revealed by Paul Dietz' test suite:
2394 ** Space, Tab, Linefeed, Return and Page have the invalid
2395 secondary constituent character trait.
2396 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2398 ** WITH-INPUT-FROM-STRING should only update the index place on
2400 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2401 works more reliably.
2402 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2403 with one-dimensional arrays with fill pointers.
2404 ** TYPE-OF failed on a complex with an integer realpart and a
2406 ** compiler failure during type inference for the code of form
2407 (IF (EQL X (THE ...)) ...) (MISC.535).
2409 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2410 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2411 platform. The port supports 61-bit fixnums, large memory spaces
2412 and reloading shared object files.
2413 * enhancement: saving cores with foreign code loaded is now
2414 supported on ppc/Darwin in addition to the previously supported
2416 * enhancement: the statistical profiler now walks deeper into the
2417 call stack for more meaningful call-graphs and accrued time
2418 reports (x86/x86-64 only). It also now reports time spent in
2420 * enhancement: it is now possible to trace most individual methods
2421 of a generic function in addition to tracing the generic function
2423 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2425 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2426 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2427 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2428 produces an error. (thanks to Vincent Arkesteijn)
2429 * bug fix: NAMESTRING on pathnames with :WILD components in their
2430 directories works correctly. (thanks to Artem V. Andreev)
2431 * fixed bug 125: compiler preserves identity of closures. (reported
2433 * bug fixed: functions with &REST arguments sometimes failed with
2434 "Undefined function" when compiled with (DEBUG 3). (reported by
2436 * bug fix: overflow during compiling of setting element of a bit
2437 vector with constant index and value. (reported by Timmy Douglas)
2438 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2439 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2440 * on x86 compiler partially supports stack allocation of dynamic-extent
2442 * GO and RETURN-FROM do not check the extent of their exit points
2443 when compiled with SAFETY 0.
2444 * fixed some bugs related to Unicode integration:
2445 ** encoding and decoding errors are now much more robustly
2446 handled; it should now be possible to recover even from invalid
2447 input or output to the terminal. (thanks to Teemu Kalvas)
2448 ** provided a first cut at implementing STRING-TO-OCTETS and
2449 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2450 ** altered the SB-MD5 contributed module slightly, changing the
2451 interface just enough for it to be supportable for builds where
2452 lisp characters are not eight bits.
2453 * fixed some bugs revealed by Paul Dietz' test suite:
2454 ** the FORMATTER-generated functions for ~V[ conditionals require
2455 the correct number of arguments.
2456 ** READ-FROM-STRING returns the mandated second value when applied
2457 to displaced strings.
2458 ** the #\Rubout and #\Backspace characters are treated as invalid
2459 constituent characters by the tokenizer.
2461 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2462 * new feature: reloading changed shared object files with
2463 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2464 * new feature: references to foreign variables and functions
2465 can now be compiled and loaded before the corresponding shared
2466 object file is loaded, as long as the foreign definitions are
2467 available at runtime.
2468 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2469 supported. (thanks to Dan Debertin)
2470 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2471 just keywords. (thanks to Vincent Arkesteijn)
2472 * fixed bug #331: structure-class instances corresponding to
2473 DEFSTRUCT forms are now created eagerly.
2474 * fixed bug #345: backtraces from calls to undefined functions work
2475 on x86 as well. Related bug #61 is now also partially fixed on x86
2476 (backtraces from throws to unknown catch tags.)
2477 * bug fix: lambda-list parsing is now stricter vrt. order and number
2478 of lambda-list keywords.
2479 * bug fix: as specified by AMOP, an error is signalled if a
2480 class-option appears multiple times in a DEFCLASS form. (reported
2482 * bug fix: RANDOM can be compiled when the compiler derives the type
2483 of its numeric argument as a disjoint set of small integers.
2484 (reported by Paul Dietz)
2485 * bug fix: starting a core saved with shared objects loaded when
2486 those objects are not available no longer causes threaded SBCL to
2487 hang. (reported by Sean Ross)
2488 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2490 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2491 argument, which must always be NIL. (reported by Kalle Niemitalo)
2492 * bug fix: printing 1.0d+23 no longer results in an error.
2493 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2494 * bug fix: structure slot setters preserve evaluation order. (thanks
2496 * fixed some bugs related to Unicode integration:
2497 ** RUN-PROGRAM can allow its child to take input from a Lisp
2498 stream. (reported by Stefan Scholl)
2499 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2500 locales. (reported by Ken Causey)
2501 * fixed some bugs revealed by Paul Dietz' test suite:
2502 ** INCF, DECF and REMF evaluate their place form as specified in
2504 ** FORMATTER expands ~{ ~} iteration directives with V or #
2505 parameters correctly.
2506 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2507 consequent uses no arguments correctly.
2508 ** the system has a partial understanding of the (COMPLEX RATIO)
2510 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2513 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2514 * new feature: a build-time option (controlled by the :SB-UNICODE
2515 keyword feature, enabled by default) for building the system with
2516 support for the entire 21-bit character space defined by the
2518 * new feature: the system now has rudimentary external-format
2519 support; the primary user-visible change at this time is that
2520 characters with the high bit set (such as lower-case-e-acute) will
2521 print correctly to a terminal in a UTF-8 environment.
2522 * minor incompatible change: BASE-CHAR no longer names a class;
2523 however, CHARACTER continues to do so, as required by ANSI.
2524 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2525 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2526 has been moved to the SB-EXT package (temporarily re-exported from
2528 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2529 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2531 * fixed bug #351: better error-handlind and reporting for malformed
2533 * fixed bug #350: bignum-printing is now more memory-efficient,
2534 allowing printing of very large bignums, eg. (expt 2 10000000).
2535 (reported by Bruno Haible)
2536 * fixed bug #302: better primitive-type selection for intersection
2538 * fixed bug #308: non-graphic characters now all have names, as
2539 required. (reported by Bruno Haible)
2540 * bug fix: redefining a class with different superclasses now correctly
2541 removes it from the direct-subclasses of its previous superclasses.
2542 (reported by David Morse)
2543 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2544 new value now works. (reported by Bruno Haible)
2545 * bug fix: correct canonicalization of multiple non-standard slot
2546 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2547 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2548 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2549 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2550 now exists, an signals an error.
2551 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2552 during macroexpansion for non-iteration variables as well. (reported
2553 by Bruno Haible for CMUCL)
2554 * bug fix: Cyclic structures and unprintable objects in compiler
2555 messages no longer cause errors. (reported by Bruno Haible)
2556 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2557 and READ-FROM-STRING all now return a primary value of NIL if
2558 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2559 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2560 (reported by Bruno Haible for CMUCL)
2561 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2562 do not designate a condition. (reported by Bruno Haible for
2564 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2565 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2566 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2567 permitting resolution in favour of any of the conflicting symbols.
2568 (reported by Bruno Haible for CMUCL)
2569 * bug fix: EQUAL compiler optimizations is less aggressive on
2570 strings which can potentially compare true despite having distinct
2571 specialized array element types.
2572 * bug fix: unit enumerations can be defined without dividing by
2573 zero. (thanks to Vincent Arkesteijn)
2574 * FORMAT compile-time argument count checking has been enhanced.
2575 (report from Bruno Haible for CMUCL)
2576 * a partial workaround for the bug 262: the compiler does not try to
2577 inline-expand a local function doing RETURN-FROM from a deleted
2578 BLOCK. (thanks to Peter Denno for the bug report and to David
2579 Wragg for the simple test case)
2580 * fixed some bugs revealed by Paul Dietz' test suite:
2581 ** RENAME-PACKAGE allows all package designators as new package
2583 ** constraint propagation and lambda variable substitution are
2584 more cautious in dealing with partially deleted code.
2585 ** compiler sometimes lost reoptimization passes.
2586 ** CERROR, given a condition as condition designator, passes its
2587 remaining arguments to the continue format control without
2589 ** Case-altering FORMAT directives work correctly on non-ASCII
2591 ** The REAL type specifier handles bounds outside the floating
2592 point ranges without signalling FLOATING-POINT-OVERFLOW.
2593 ** Functions with IR1-transformations can create intercomponent
2594 references to global functions.
2595 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2597 ** FORMAT ~R treats a nil value for its first parameter correctly.
2599 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2600 * enhancement: saving cores with foreign code loaded is now
2601 supported on x86/NetBSD and sparc/Linux in addition to the previously
2602 supported platforms.
2603 * bug fix: on some platforms repeated installations caused multiple
2604 copies of HTML documentation to be installed -- should not happen
2605 any more. (reported by Stefan Scholl)
2606 * bug fix: parsing self-recursive alien record types multiple times
2607 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2608 original patch by Helmut Eller for CMUCL)
2609 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2610 (thanks to Richard Kreuter)
2611 * bug fix: defining classes whose accessors are methods on existing
2612 generic functions in other (locked) packages no longer signals
2613 bogus package lock violations. (reported by François-René Rideau)
2614 * bug fix: special variables as DEFMETHOD parameters no longer have
2615 associated bogus type declarations. (reported by David Wragg and
2617 * bug fix: read-write consistency on streams of element-type
2618 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2619 * bug fix: redefiniton of the only method of a generic function with
2620 no DEFGENERIC no longer emits a full WARNING. In addition,
2621 redefinition of generic functions with no DEFGENERIC to an
2622 incompatible lambda list now signals an error. (thanks to Zach
2624 * bug fix: DEFGENERIC now works even when there's a function of the
2625 same name in an enclosing lexical environment. (thanks to Zach
2627 * fixed compiler failure, caused by instrumenting code during
2628 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2629 * optimization: added loop analysis and improved register allocation
2630 * fixed some bugs revealed by Paul Dietz' test suite:
2631 ** POSITION on displaced vectors with non-zero displacement
2632 returns the right answer.
2633 ** (SIMPLE-STRING) is a valid type specifier for sequence
2635 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2637 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2638 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2640 ** The justification version of the FORMAT ~< directive treats
2641 non-zero minpad parameter correctly.
2643 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2644 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2645 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2646 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2647 the supported interface.
2648 * new feature: Single-stepping of code compiled with DEBUG 2 or
2649 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2650 * new feature: saving cores with foreign code loaded is now
2651 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2652 Timothy Moore's work for CMUCL)
2653 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2654 parameters to * instead of NIL if no initform is supplied.
2655 (reported by Johan Bockgaard)
2656 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2657 correctly when FUNCALL appears as the car of the form. Note:
2658 despite this FUNCALL forms are not currently subject to
2659 compiler-macro expansion. (port of Raymond Toy's fix for the
2660 same from CMUCL, reported by Johan Bockgaard)
2661 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2662 (thanks for Teemu Kalvas)
2663 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2664 case instead of terminating the iteration (thanks for Julian
2665 Squires, Sean Champ and Raymond Toy)
2666 * bug fix: incorrect expansion of defgeneric that caused a style
2667 warning. (thanks for Zach Beane)
2668 * bug fix: slot accessor effective method computation works properly
2669 for classes with multiple non-standard applicable methods on
2670 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2671 * on x86 compiler supports stack allocation of results of LIST and
2672 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2673 CMUCL implementation by Gerd Moellmann)
2674 * fixed some bugs revealed by Paul Dietz' test suite:
2675 ** FORMAT strings with both the ~<~:;~> form of the justification
2676 directive and pretty-printing directives cause an error.
2678 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2679 * incompatible change: the internal functions
2680 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2681 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2682 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2683 instead of the old functions.
2684 * new feature: on platforms where "dladdr" is available foreign
2685 function names now appear in backtraces. (based on Helmut Eller's
2687 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2688 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2690 * documentation: ASDF manual is now distributed with SBCL.
2691 * bug fix: SBCL can now load its contributed modules with REQUIRE
2692 even if the system-provided entries have been removed from
2693 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2695 * bug fix: backtraces involving undefined functions or assembly
2696 routines are more informative. (thanks to Brian Downing)
2697 * bug fix: mutually referent alien structures now work correctly.
2698 (reported by Rick Taube)
2699 * bug fix: structures defined by WITH-ALIEN can be referred to
2700 within other definitions in the same WITH-ALIEN.
2701 * bug fix: division operators (MOD, TRUNCATE and the like) with
2702 constant zero divisors and integer dividends no longer generate
2704 * bug fix: provide default methods for INPUT-STREAM-P and
2705 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2706 * bug fix: improve the detection and resolution of MOP metacycles
2707 (where effective method computation depends on the generic function
2708 having its effective method computed). (reported by Bruno Haible)
2709 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2710 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2711 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2712 * bug fix: pathnames with relative directory components can be
2713 represented relative to default pathnames.
2714 * optimization: in taking the GCD of bignums, reduce the two bignums
2715 to approximately the same size (using Euclid's algorithm) before
2716 applying the more sophisticated binary GCD. (thanks to Juho
2718 * optimization: COUNT on bitvectors now operates word-at-a-time.
2719 * optimization: ASH with a positive, but not necessarily constant,
2720 (leftwards) shift, when in a modular context, is compiled to a
2722 * fixed some bugs revealed by Paul Dietz' test suite:
2723 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2724 if the corresponding argument is NIL.
2725 ** FORMAT directives accepting a minpad parameter treat negative
2727 ** literal commas as character parameters to FORMAT directives are
2729 ** literal spaces directly after ~<Newline> directives within a
2730 format-logical-block (~:< ~@:>) do not induce :FILL-style
2731 conditional newlines.
2732 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2733 as specified: it no longer includes conditional newlines).
2734 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2736 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2737 :PER-LINE-PREFIX argument does not evaluate to a string.
2739 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2740 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2741 the manual for details; for now, package locks can be disabled by
2742 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2743 if no major problems are found then it is likely that they will be
2744 compiled in unconditionally.
2745 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2746 unsupported operators on all platforms. To load a shared library
2747 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2748 object file, link it into a shared library outside of SBCL and
2749 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2751 * bug workaround: ROOM T and the GC were not working together
2752 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2753 reporting facility aren't preserved. That reporting has been
2754 disabled, so now until and unless someone figures out how to make it
2755 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2756 * minor incompatible change: as threatened around sbcl-0.8.0, the
2757 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2758 The symbols are also exported from SB-PCL for backwards
2759 compatibility, but more so than before SB-PCL should be treated as
2760 an implementation-internal package.
2761 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2763 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2764 It is known as of this release not to work on the Alpha, however.
2765 * fixed bug #167: errors signalled due to illegal syntax in method
2766 bodies are now more legible.
2767 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2768 designators and can hence be used with TYPEP.
2769 * fixed bug #333: CHECK-TYPE now ensures that the type error
2770 signalled, if any, has the right object to be accessed by
2771 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2772 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2773 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2775 * fixed bug #334: programmatic addition of slots using specialized
2776 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2777 and :ALLOCATION :CLASS slots.
2778 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2779 float exponents. (rereported by Peter Seibel)
2780 * fixed a bug: #\Space (and other whitespace characters) are no
2781 longer considered to be macro characters in standard syntax by
2782 GET-MACRO-CHARACTER.
2783 * fixed bug: initialization of condition class metaobjects no longer
2784 causes an instance of the condition to be created. (reported by
2786 * fixed bug: it is now possible to have slots such that
2787 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2788 description is neither :INSTANCE nor :CLASS.
2789 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2790 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2791 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2792 non-standard SLOT-DEFINITION-ALLOCATION values.
2793 * fixed bugs: various race conditions handling exiting threads.
2794 CL-PPCRE's thread torture test now passes.
2795 * fixed arguably-a-bug: GC time proportional to number of threads in
2796 system even when most of them are idle
2797 * optimization: improved performance of BIT and SBIT on bit-vectors.
2798 * .fasl file incompatibility: The fasl file version number has
2799 been incremented because of changes associated with package locks.
2801 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2802 * minor incompatible change: the system no longer provides
2803 optimization hints (conditions which are TYPEP
2804 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2805 mode; these hints are still emitted when higher SPEED optimization
2807 * new contrib module: a sampling profiler (profiling by statistical
2808 sampling, rather than by instrumenting functions) is available as
2809 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2810 * the behaviour of the standard function ED is now customizeable by
2811 third parties through a hook variable: see ED's documentation
2812 string for information on the protocol.
2813 * the compiler no longer emits efficiency notes for (FUNCALL X)
2814 when the type of X is uncertain under default optimization
2816 * fixed bug 276: mutating a binding of a specialized parameter to a
2817 method to something that is not TYPEP the specializer is now
2819 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2820 exhibit the required behaviour on the x86 platform. (thanks to
2821 Peter van Eynde, Eric Marsden and Bruno Haible)
2822 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2823 even for difficult arguments. (reported by Peter Graves)
2824 * fixed bug 141a: the backquote printer now descends quoted
2826 * fixed another bug in backquote printing: no more destructive
2827 modification of the form's list structure. (reported by Brian
2829 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2830 move between its address being taken and the call to
2831 interrupt_thread, fixing a crashing race condition.
2832 * the SB-POSIX contrib implementation has been adjusted so that it
2833 no longer exhibits ridiculously poor performance when constructing
2834 instances corresponding to C structs.
2836 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2837 * minor incompatible change: the sb-grovel contrib now treats C
2838 structures as alien (in the sense of SB-ALIEN) objects rather than
2839 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2840 has implications for memory management of client code
2841 (sb-grovel-returned objects must now be manually managed) and for
2842 type safety (alien objects now have full types).
2843 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2844 used to control emission of compiler diagnostics, rather than the
2845 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2846 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2847 quality should be considered deprecated.
2848 * install.sh now installs the user manual as well
2849 * (not quite a new documentable feature, but worth considering in
2850 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2851 beginnings of a semantically meaningful condition hierarchy is
2852 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2854 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2855 designator as the defaults argument.
2856 * fixed bug: Displaced arrays whose displaced-to array has become
2857 too small now cause ARRAY-DIMENSION to signal an error, providing
2858 for safer bounds-checking. (reported by Bruno Haible)
2859 * fixed bug: DEFCLASS slot definitions with identical :READER and
2860 :WRITER names now signal a reasonable error. (reported by Thomas
2862 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2864 * fixed bug: Invalid slot specification errors now print correctly.
2865 (thanks to Zach Beane)
2866 * fixed bug 320: Shared to local slot value transfers in class
2867 redefinitions now happen corrently from superclasses as
2868 well. (reported by Bruno Haible)
2869 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2871 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2872 improper lists correctly. (reported by Bruno Haible)
2873 * fixed bug 313: source-transform for <fun-name> was erroneously
2874 applied to a call of a value of a variable with name <fun-name>.
2875 (reported by Antonio Menezes Leitao)
2876 * fixed bug 307: The obsolete instance protocol ensures that
2877 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2878 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2879 remove dead unknown-values globs from the middle of the stack.
2880 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2881 easier to resume long computations after using *BREAK-ON-SIGNALS*
2882 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2883 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2884 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2885 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2886 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2887 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2889 * fixed a (fairly theoretical) bug in string printing: if
2890 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2891 does not have array-element-type equal to the most general string
2893 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2894 function name. (thanks to Nikodemus Siivola)
2895 * fixed bug: compile-time format string checker failed on
2896 non-closed ~{. (reported by Thomas F Burdick)
2897 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2898 don't warn on legal loop code involving more than one aggregate
2899 boolean. (thanks to Nikodemus Siivola)
2900 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2901 in keyword position to MAKE-PACKAGE was not being reported as
2903 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2904 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2906 * fixed bugs 280 and 312: the checking for multiple definitions in a
2907 file is less likely to become confused by uses of inline
2909 * fixed bug: the #S reader macro performs the keyword coercion
2910 specified for slot names. (reported by Kalle Niemitalo)
2911 * fixed bug: lambda lists may contain symbols whose names start with
2912 & but are not lambda-list-keywords; their occurrence triggers a
2914 * fixed bug 321: define-method-combination argument lambda lists do
2915 not cause invalid code to be generated when &optional or &aux
2916 variables have default values. (reported by Bruno Haible)
2917 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2918 have CLOS classes; this appears also to have fixed reported
2919 instability in stack exhaustion detection.
2920 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2921 MUFFLE-WARNING when no associated restart is present is now
2923 * optimization: rearranged the expansion of various defining macros
2924 so that each expands into only one top-level form in a
2925 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2927 * optimization: used a previously little-used slot in symbols to
2928 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2930 * fixed some bugs revealed by Paul Dietz' test suite:
2931 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2933 ** Fixed an optimization bug related to inheritance of initforms
2934 from local to shared slots.
2935 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2936 ** CAST optimizer forgot to flush argument derived type.
2937 ** print/read consistency on floats is now orders of magnitude
2938 more likely. (thanks also to Bruno Haible for a similar report
2940 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2941 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2942 for objects of type REAL. Make it so.
2943 ** SXHASH is specified (infelicitously) to respect similarity,
2944 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2945 it so. (thanks to Markus Ziegler)
2946 ** on the Alpha, the compiler succeeds in compiling functions
2947 returning a known number of arguments greater than 63.
2948 ** fixed handling of invalid NIL arguments in keyword position
2950 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2952 ** provided a readably-printable representation for RANDOM-STATE
2954 ** ensured that pathnames, where they have a namestring, always
2955 print using #P"..." syntax.
2957 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2958 * Support for the forthcoming 2.0 version of the NetBSD kernel
2959 running on x86 hardware has been added. (thanks to Perry
2960 E. Metzger most immediately, and others for their past work)
2961 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2962 current release version; SBCL's OpenBSD support had been broken
2963 since about the time of OpenBSD's switch to ELF binary format.)
2964 * [placeholder for DX summary]
2965 ** user code with &REST lists declared dynamic-extent, under high
2966 speed or space and low safety and debug optimization policy.
2967 * The manual has been converted to Texinfo format and the debugger
2968 chapter from the cmucl manual has been added.
2969 * A facility has been added to extract documentation strings from
2970 sbcl and store them as Texinfo-formatted snippets for inclusion in
2971 the manual (via Texinfo's @include directive)
2972 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2973 the test case to Dave Roberts)
2974 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2975 pointers. (reported by Sean Ross)
2976 * bug fix: PROFILE output is printed nicely even for large numerical
2977 values. (thanks to Zach Beane)
2978 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2979 greater than 32 handle EOF correctly.
2980 * bug fix: on X86 an immediate argument of the IMUL instruction is
2981 correctly printed in disassembly. (thanks to Lutz Euler)
2982 * bug fix: class slots in redefined classes preserve their old
2983 values. (thanks to Bruno Haible and Nikodemus Siivola)
2984 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2985 succeeds. (reported by Marco Baringer)
2986 * fixed some bugs revealed by Paul Dietz' test suite:
2987 ** READ-SEQUENCE now works on ECHO-STREAMs.
2988 ** RATIONALIZE works more according to its specification. (thanks
2991 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2992 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2993 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2994 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2995 should matter to you only if you rebind the printer control
2996 variables and then find you want different bindings in the
2997 debugger than in the ordinary execution of your program.)
2998 * The runtime build system has been tweaked to support building
2999 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3000 assembler and linker. (thanks to Nikodemus Siivola)
3001 * Unbound, undefined, undeclared variables now trigger full
3002 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3003 more often programmer error than deliberate exploitation of undefined
3005 * optimization: the hash algorithm for strings has changed to one
3006 that is less vulnerable to spurious collisions. (thanks to Juho
3008 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3009 needless bounds checking. (thanks to Juho Snellman)
3010 * optimization: implemented multiplication as a modular
3011 (UNSIGNED-BYTE 32) operation on the PPC backend.
3012 * fixed some bugs revealed by Paul Dietz' test suite:
3013 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3015 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3016 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3017 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3019 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3021 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3023 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3024 their output stream on EOF from read.
3025 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3026 have been read to end-of-file.
3027 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3029 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3030 description of determination of which consecutive characters
3032 ** Printing the "Space" character with escaping on now yields "#\\ ",
3033 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3034 ** Reading floating-point numbers with *READ-BASE* set to a number
3035 less than 10 works correctly.
3036 ** Reading floating-point numbers with *READ-BASE* set to a number
3037 more than 10 works correctly.
3038 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3039 the readtable currently in effect.
3041 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3042 * minor incompatible change: parsing of namestrings on a physical
3043 (Unix) host has changed; numbers after the final #\. in a
3044 namestring are no longer interpreted as a version field. This is
3045 intented to be largely invisible to the user, except that the
3046 meaning of the namestring "*.*.*" has changed: it now refers to a
3047 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3048 should usually be replaced by
3049 (make-pathname :name :wild :type :wild :version :wild)
3050 with the added benefit that this is more likely to be portable.
3051 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3052 option to OPEN now signals an error if the file being opened
3053 exists; this may have an impact on existing code.
3054 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3055 signals received, on the PowerPC platforms (both Linux and
3056 Darwin). (thanks to Pierre Mai for pointing out the location of
3058 * several fixes on OS X: The system now builds and runs cleanly on
3059 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3060 (thanks to Brian Mastenbrook)
3061 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3062 second-resolution: integer multiples of 1/3600 between -24 and 24.
3063 (thanks to Vincent Arkesteijn)
3064 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3065 type when called with 1 argument; PEEK-CHAR checked type of
3066 PEEK-TYPE only after having read first character from a
3067 stream. (reported by Peter Graves)
3068 * bug fix: the garbage collector now has much better locality
3069 behaviour, and in particular no longer treats all memory as being
3070 exhausted when many small objects point to each other in a deeply
3072 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3073 recognized as being TYPEP their class.
3074 * bug fix: the PUSHNEW documentation string has been corrected.
3075 (thanks to Vincent Arkesteijn)
3076 * bug fix: defaulting of the value for the last of an atypically
3077 large number of multiple values being bound was not being
3078 performed correctly on the Alpha or PPC platforms
3079 * optimization: implemented multiplication as a modular
3080 (UNSIGNED-BYTE 32) operation on the x86 backend.
3081 * optimization: SEARCH on simple-base-strings can now be open-coded.
3082 (see also contrib/compiler-extras.lisp for inspiration for
3083 teaching the compiler about the Boyer-Moore algorithm).
3084 * value, returned by MAX (and MIN) called with several EQUALP, but
3085 not EQL, arguments now does not depend on compiler settings.
3086 * fixed some bugs revealed by Paul Dietz' test suite:
3087 ** in stack analysis liveness information is propagated from
3088 non-local entry points.
3089 ** pathwise CAST removing failed when the CAST node did not start
3091 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3092 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3094 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3095 host is already defined.
3096 ** RENAME-FILE works on streams instead of signalling an internal
3098 ** PEEK-CHAR uses the current readtable when determining whether
3099 or not a character is whitespace.
3100 ** MERGE-PATHNAMES handles the case when the pathname does not
3101 specify a name while the default-pathname specifies a version.
3102 ** Pathnames now stand a better chance of respecting print/read
3104 ** Attempting to use standardized file system operators with a
3105 pathname with invalid :DIRECTORY components signals a
3107 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3109 ** DIRECTORY on logical pathnames is more correct.
3110 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3111 signal a TYPE-ERROR if their argument is not a stream.
3112 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3113 designator argument does not designate a stream.
3114 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3115 examining the synonym.
3116 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3118 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3119 element-type larger than ([UN]SIGNED-BYTE 32).
3121 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3122 * When built with the :SB-FUTEX feature, threaded builds now take
3123 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3124 for faster/more reliable mutex and condition variable support.
3125 * Incompatible change (but one you probably shouldn't have been using
3126 anyway): the interface and code for arbitrating between multiple
3127 threads in the same user session has been redesigned.
3128 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3129 error when called without an explicit environment argument.
3130 (thanks to Nikodemus Siivola)
3131 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3132 confused about their position. (thanks to Adam Warner and Gerd
3134 * bug fix: Pretty printing backquoted forms with unquotations in the
3135 argument list position of various code constructs such as LAMBDA
3136 now works correctly. (reported by Paul Dietz)
3137 * bug fix: Pretty printing unquotations no longer loses all
3138 stream position information.
3139 * optimization: performance of string output streams is now less
3140 poor for multiple small sequence writes.
3141 * optimization: performance of CSUBTYPEP in the presence of complex
3142 expressions involving CONS and NOT many times has been improved.
3143 (reported by Paul Dietz)
3144 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3146 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3147 streams for the REPL, for the debugger, and so on. (thanks to
3149 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3150 * fixed some bugs revealed by Paul Dietz' test suite:
3151 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3152 is ignored if it is too small, rather than propagating through
3153 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3154 ** extremely complex negations of CONS types were not being
3155 sufficiently canonicalized, leading to inconsistencies in
3157 ** VALUES tranformer lost derived type.
3159 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3160 * fixed a bootstrapping bug: the build process no longer assumes
3161 that the various BOOLE-related constants have the same value in
3162 host and target lisps. (noted by Paul Dietz' test suite on an
3163 SBCL binary built from CLISP)
3164 * The system can now be dynamically linked on the MIPS platform,
3165 which enables dynamic loading of foreign code from Lisp. (thanks
3166 to Ralf Baechle for discussions on the MIPS ABI)
3167 * The system now records debugging information for its own source
3168 files in a filesystem-position-independent manner, relative to
3169 the "SYS" logical host.
3170 * fixed a compiler bug: MV-LET convertion did not check references
3171 to the "max args" entry point. (reported by Brian Downing)
3172 * tweaked disassembly notes to be less confident about proclaiming
3173 some instruction as an LRA. (thanks to Brian Downing)
3174 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3175 now each have their own history, command character, and other
3176 characteristics. (thanks to David Lichteblau)
3177 * fixed some bugs revealed by Paul Dietz' test suite:
3178 ** compiler failure in compiling LOGAND expressions including a
3180 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3181 shift greater than 32.
3182 ** FLUSH-DEST did not mark blocks for type check regeneration.
3183 ** HANDLER-CASE failed to accept declarations in handler clauses
3184 in some circumstances.
3186 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3187 * New code in contrib/sb-introspect (still probably not entirely
3188 stable yet) provides some support for smart Lisp development
3189 environments like SLIME.
3190 * The conditions signalled for errors occurring when loading .fasl
3191 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3192 in a way which should help ASDF recover gracefully.
3193 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3194 stuff has been cleaned up. If you code contrib/ stuff, this might
3195 affect you, and you can look at contrib/README, contrib/STANDARDS,
3196 and/or the 0.8.4.27 diff to check.
3197 * In full calls the compiler now does not generate checks for declared
3198 argument types for all arguments.
3199 * various threading fixes
3200 ** and some experimental patches which didn't make it into
3201 the main tree for this release, but which are shipped in
3202 contrib/experimental-thread.patch as a possible fix for some
3203 failures (deadlock, spinning...) in GC-intensive multithreaded
3205 * fixed PPC build problem (source code incompatibility of different
3206 library versions): added offsetof() hackery which attempts to divine
3207 where glibc maintainers put uc_mcontext today
3208 * fixed bug 282: compiler does not trust type assertions while passing
3209 arguments to a full call.
3210 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3211 &OPTIONAL VALUES type parameter.
3212 * fix bug 214: algorithm for noting rejected templates is now more
3213 similar to that of template seletion. (also reported by rydis on
3215 * fixed bug 141b: printing backquoted information readably and prettily
3216 inserts a space where necessary.
3217 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3218 (CHARACTER 10) are now reported as errors, rather than propagated
3219 as unknown types. (reported by piso on #lisp)
3220 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3221 with values NIL and :ERROR. (thanks to Milan Zamazal)
3222 * fixed bug 191c: CLOS now does proper keyword argument checking as
3223 described in CLHS 7.6.5 and 7.6.5.1.
3224 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3225 longer raise an error; further, using a list as a for-as-arithmetic
3226 counter now raises a meaningful error.
3227 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3228 now understood by sequence creation functions such as MAKE-SEQUENCE
3230 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3231 a STRING-INPUT-STREAM.
3232 * compiler enhancement: SIGNUM is now better able to derive the type
3234 * type declarations inside WITH-SLOTS are checked. (reported by
3236 * fixed some bugs revealed by Paul Dietz' test suite:
3237 ** incorrect optimization of TRUNCATE for a positive first
3238 argument and negative second.
3239 ** compiler failure in let-convertion during flushing dead code.
3240 ** compiler failure while deriving type of TRUNCATE on an
3241 interval, containing 0.
3242 ** ASH of a negative bignum by a negative bignum count now returns
3244 ** intersection of CONS types now canonicalizes properly, fixing
3245 inconsistencies in SUBTYPEP.
3247 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3248 * incompatible change: The --disable-debugger command line
3249 option now clobbers the debugger at a more fundamental
3250 level, by redefining #'INVOKE-DEBUGGER instead of by
3251 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3252 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3253 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3254 enter the debugger REPL and then suffer recursive errors
3255 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3256 while under the new system, BREAK in --disable-debugger mode
3257 terminates the system just as an unhandled error would.
3258 * fixed compiler performance when processing loops with a step >1;
3259 * bug fix: DOCUMENTATION now retrieves generic function
3260 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3261 support has been systematized, and now supports the methods
3262 specified by ANSI, along with a default method and a method for
3263 slot documentation. (reported by Nathan Froyd)
3264 * bug fix: effective methods associated with a generic function are
3265 no longer cached over a change of that generic function's method
3266 combination. (reported by Andreas Fuchs)
3267 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3268 names a non-existent directory. (thanks to Andreas Fuchs)
3269 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3270 the PPC platform, lead to stack corruption; this has been fixed.
3271 (reported by Rainer Joswig)
3272 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3273 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3274 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3275 arithmetic in general, is now much more reliable on the PPC
3277 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3278 platform now returns the right answer.
3279 * optimization: restored some effective method precomputation in
3280 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3281 precomputation is now tunable.
3282 * optimization: compiler-internal data structure use has been
3283 reviewed, and changes have been made that should improve the
3284 performance of the compiler by about 20%.
3285 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3286 simple-base-strings and simple-bit-vectors is improved.
3287 * optimization: the optimization of 32-bit logical and arithmetic
3288 functions introduced in version 0.8.3 on the x86 has been
3289 implemented on the mips, ppc and sparc platforms; an
3290 implementation of the same facility, but for 64-bit arithmetic,
3291 has been added for the alpha.
3292 * microoptimization: the compiler is better able to make use of the
3293 x86 LEA instruction for multiplication by constants.
3294 * bug fix: in some situations compiler did not report usage of
3295 generic arithmetic in (SPEED 3) policy.
3296 * bug 145b fix: compiler used wrong type specifier while converting
3297 MEMBER-types to numeric.
3298 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3300 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3301 index argument now works properly on the Alpha platform.
3302 * bug fix: floating point exception treatment on the Alpha platform
3304 * bug fix: FILE-POSITION works much better on string input and
3305 output streams. (thanks to Nikodemus Siivola)
3306 * bug fix: many threading/garbage collection symptoms sorted.
3307 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3308 might be pseudo-atomic.
3309 * internal change: Stopping for GC is now done with signals not
3310 ptrace. GC is now done in whichever thread wanted it, instead of
3312 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3314 * bug fix: result form in DO is not contained in the implicit
3316 * incompatible change: ICR structure is changed; the value part of
3317 CONTINUATION is now called LVAR; corresponding functions are
3318 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3319 * added type deriver for ISQRT (thanks to Robert E. Brown).
3320 * bug fix: better support for loading from the command line when an
3321 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3323 * fixed some bugs revealed by Paul Dietz' test suite:
3324 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3325 ** ROUND and FROUND now give the right answer when given very
3326 small float arguments.
3327 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3329 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3330 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3331 ** LCM should return a non-negative integer.
3332 ** PARSE-INTEGER returned the index of a terminator instead of the
3333 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3334 ** PARSE-INTEGER returned an incorrect index being applied to a
3336 ** LCM with two arguments of 0 returns 0 rather than signalling
3338 ** unsigned addition of a 32-bit constant with the high bit set no
3339 longer causes an internal compiler error on the x86.
3340 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3341 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3342 with negative last argument.
3343 ** byte specifiers with zero size and position no longer cause
3344 an error during type derivation.
3345 ** bignum multiplication on the Alpha platform now returns the
3347 * porting: The system now builds on SuSE AMD64, although it still
3348 generates a 32-bit binary.
3349 * .fasl file incompatibility: The fasl file version number has
3350 been incremented (because of the changes to internal compiler
3351 data structures referred to above).
3353 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3354 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3355 more accurately, on the Darwin kernel running on PowerPC hardware.
3356 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3357 * Compiler code deletion notes now signal a condition of type
3358 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3359 an associated MUFFLE-WARNING restart.
3360 * The compiler now performs limited argument count validation of
3361 constant format strings in FORMAT, and where appropriate in ERROR,
3362 CERROR and WARN. (thanks to Gerd Moellmann)
3363 * New ASDF-INSTALL contrib can be used for automatic download and
3364 installation of third-party Lisp code from CCLAN or other sites
3366 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3367 which forces another thread to execute a function supplied by the
3369 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3370 now accept and act upon their :ELEMENT-TYPE keyword argument.
3371 (reported by Martin Atzmueller, Edi Weitz)
3372 * bug fix: FILE-POSITION now accepts position designators up to
3373 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3374 is the greater. (thanks to Patrik Nordebo)
3375 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3376 Kalle Olavi Niemitalo)
3377 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3378 printable. (reported by Eric Marsden)
3379 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3380 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3381 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3382 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3383 (thanks to Stig Sandoe)
3384 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3385 UNREAD-CHAR now correctly includes the unread character in the
3386 target sequence. (thanks to Gerd Moellmann)
3387 * bug fix in threaded builds: the system can now be suspended and
3388 resumed by shell job control with minimal disruption.
3389 * bug fixes in times and timezones >2038AD
3390 * better handling of "where is GNU make?" problem in build scripts
3391 (thanks to Nikodemus Siivola)
3392 * new optimization: inside a named function any reference to a
3393 function with the same name is considered to be a self-reference;
3394 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3395 optimization quality.
3396 * new optimization on x86: logical functions and + now have
3397 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3398 used when the result is truncated to 32 bits.
3399 * VALUES declaration is partially enabled.
3400 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3401 * fixed some bugs revealed by Paul Dietz' test suite:
3402 ** The system now obeys the constraint imposed by
3403 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3404 types form a lattice under type intersection.
3405 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3406 ** ASSOC now ignores NIL elements in an alist.
3407 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3408 and (1+ MOST-POSITIVE-FIXNUM) answers.
3409 ** The addition of a method with invalid qualifiers to a generic
3410 function does not cause an error to be signalled immediately;
3411 a warning is signalled, and the error is generated only on
3412 calling the generic function.
3413 * changed .fasl file version number, in part to add type codes for
3414 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3415 obscure ANSI requirements
3417 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3418 * fixed bug 148: failure to inline-expand a local function left
3419 garbage, confusing the compiler.
3420 * fixed bugs 3cd: structure slot readers perform type check if the
3421 slot can have an invalid value (i.e. it is either not initialized
3422 or can be written with a less specific slot writer).
3423 * bug fix: the compiler now traps array references to elements off
3424 the end of an array; previously, the bounds checking in some
3425 circumstances could go off-by-one.
3426 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3428 * type declarations for array element types now obey the description
3429 on the CLHS page "Declaration TYPE", as per discussions on
3430 sbcl-help around 2003-05-08. This means that a declaration
3431 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3432 declaration, all references to BAR will be asserted or assumed
3433 (with THE, so dependent on compiler policy) to involve objects of
3434 type FOO. Note that no such declaration is implied in
3435 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3436 * declared types of functions from the "Conditions"
3437 chapter. (reported by Paul Dietz)
3438 * bug fix: CERROR accepts a function as its first argument.
3439 * bug fix: NTH an NTHCDR accept a bignum as index
3440 arguments. (reported by Adam Warner)
3441 * optimization: character compare routines now optimize comparing
3442 against a constant character. (reported by Gilbert Baumann)
3443 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3444 argument now works properly on the MIPS platform.
3445 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3446 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3447 declared to have a functional type, does not cause an error
3449 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3450 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3451 * fixed bug: if last continuation of a deleted block has a
3452 destination, this destination should be deleted too. (reported by
3454 * fixed a bug in the bootstrap process: the host compiler's values
3455 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3456 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3457 test case from Patrik Nordebo)
3458 * improved the ability of the disassembler on the PPC platform to
3459 provide helpful disassembly notes.
3460 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3461 the class in more cases than previously.
3462 * bug fix: FILE-POSITION now understands :START and :END for
3463 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3464 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3465 8) data. (thanks to David Lichteblau)
3466 * bug fix: it is possible to add a method to a generic function
3467 without lambda list.
3468 * bug fix: reader failed to signal END-OF-FILE inside an
3469 object representation. (reported by Nikodemus Siivola)
3470 * fixed some bugs revealed by Paul Dietz' test suite:
3471 ** LAST and [N]BUTLAST should accept a bignum.
3472 ** condition slot accessors are methods.
3473 ** (VECTOR NIL) is a subtype of STRING.
3475 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3476 * minor incompatible change: some nonsensical specialized lambda
3477 lists (used in DEFMETHOD) which were previously ignored now signal
3479 * minor incompatible change: the system is now aware of the types of
3480 variables in the COMMON-LISP package, and will signal errors for
3481 most violations of these type constraints (where previously they
3482 were silently accepted).
3483 * minor incompatible change: COMPILE-FILE now uses the freedom
3484 afforded (ANSI 3.2.2.3) to use derived function types for
3485 functions defined in the same file. This also permits the system
3486 to warn on static type mismatches and function
3487 redefinition. (Currently it does not work with high DEBUG level.)
3488 * minor incompatible change: VALUES declaration is disabled.
3489 * When issuing notes, the compiler now signals a condition of type
3490 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3491 restart for use in user handlers. It is expected that the
3492 COMPILER-NOTE condition will eventually become a condition
3493 supertype to a hierarchy of note types, which will then be
3494 handleable in a similar fashion. However, at the moment, no such
3495 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3496 but it's an implementation detail, not a classification for the
3498 * Changes in type checking closed the following bugs:
3499 ** type checking of unused values (192b, 194d, 203);
3500 ** template selection based on unsafe type assertions (192c, 236);
3501 ** type checking in branches (194bc).
3502 * A short form of VALUES type specifier has ANSI meaning (it has
3503 increased the number of situations when SBCL cannot perform type
3505 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3506 keywords or constants is permissible.
3507 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3508 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3509 classes. (thanks to Antonio Martinez)
3510 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3511 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3512 argument to a pretty-print stream. Instead, it leaves any such
3513 operations to DESCRIBE-OBJECT methods.
3514 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3516 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3517 lambda lists. (thanks to David Lichteblau)
3518 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3519 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3520 (thanks to Gerd Moellmann)
3521 * fixed bug 246: increased compilation speed of long
3522 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3524 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3526 * DEFCONSTANT now throws a condition of type
3527 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3528 constant to a non-EQL value; CONTINUE and ABORT restarts
3529 respectively change and preserve the value.
3530 * fixed bug 63: The code walker, part of the implementation of CLOS,
3531 is now better at handling symbol macros.
3532 * bug fix: There is no longer an internal implementation type named
3533 CL:LENGTH. (reported by Raymond Toy)
3534 * bug fix: In macro-like defining macros/special operators the
3535 implicit block does not enclose the lambda list.
3536 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3537 enclosed in parentheses) are not suitable as type specifiers, and
3538 their use properly signals an error now.
3539 * bug fix: An argument count mismatch for a type specifier in code
3540 being compiled no longer causes an unhandled error at compile
3541 time, but signals a compile-time warning.
3542 * fixed simple vector readable printing
3543 * bug fix: DESCRIBE takes more care over whether the class
3544 precedence list slot of a class is bound before accessing it.
3545 (reported by Markus Krummenacker)
3546 * bug fix: FORMATTER can successfully compile pretty-printer format
3547 strings which use variants of the ~* directive inside.
3548 * bug fix: SEARCH now applies its TEST predicate to the elements of
3549 the arguments in the correct order. (thanks to Wolfhard Buss)
3550 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3551 in type inference. (thanks to Robert E. Brown)
3552 * bug fix: Reading in symbols with an explicit package name of ""
3553 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3554 * fixed some bugs revealed by Paul Dietz' test suite:
3555 ** NIL is now allowed as a structure slot name.
3556 ** Arbitrary numbers, not just REALs, are allowed in certain
3557 circumstances in LOOP for-as-arithmetic clauses.
3558 ** Multiple class redefinitions before slot access no longer
3559 causes a type error.
3560 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3561 association between the name and a class.
3562 ** Generic functions with non-standard method-combination and over
3563 five methods all of which return constants no longer return NIL
3564 after the first few invocations. (thanks to Gerd Moellmann)
3565 ** CALL-NEXT-METHOD with no arguments now passes the original
3566 values of the arguments, even in the presence of assignment.
3567 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3569 ** DISASSEMBLE works with closures and funcallable instances.
3570 ** ADD-METHOD now returns the generic function, not the new method.
3571 ** FIND-METHOD signals an error if the lengths of the specializers
3572 is incompatible with the generic function, even if the ERRORP
3574 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3575 which its argument is a member.
3576 ** DEFCLASS only redefines the class named by its class-name
3577 argument if that name is the proper name of the class;
3578 otherwise, it creates a new class.
3579 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3580 of the UNBOUND-SLOT condition to the name of the slot.
3581 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3582 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3583 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3584 SLOT-MAKUNBOUND in the specified fashion.
3586 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3587 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3588 cross-compilation host. As a consequence, we can now bootstrap our
3589 way up to SBCL starting with a bare gcc toolchain and human-readable
3590 source code (first the source to CLISP, then the source to SBCL).
3591 * A contributed module containing a partial implementation of the
3592 simple-streams interface has been included. (thanks to Rudi
3594 * A contributed module implementing the RFC1321 Message Digest
3595 Algorithm, known as MD5, has been included.
3596 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3597 no longer has any effect, as the code controlled by this feature
3598 has been deleted. (As far as we know, no-one has ever built using
3599 this feature, and its semantics were confused in any case).
3600 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3601 work on conditions (as required by the ANSI specification),
3602 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3603 expected behaviour on conditions. Users should note, however,
3604 that such behaviour is not required by the ANSI specification,
3605 and so use of this behaviour may render their code unportable.
3606 * fixed some bugs revealed by Paul Dietz' test suite:
3607 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3609 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3610 ** SXHASH on condition objects no longer returns NIL.
3611 ** :ALLOCATION :CLASS slots are better treated; their values are
3612 updated on class redefinition, and initforms inherited from
3613 superclasses are applied.
3614 ** REMOVE-METHOD returns its generic function argument even when
3615 no method was removed.
3616 ** SHARED-INITIALIZE now initializes the values of the requested
3617 slots, including those with :ALLOCATION :CLASS.
3618 ** ALLOCATE-INSTANCE now works on structure classes defined via
3619 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3621 ** SLOT-EXISTS-P now works on conditions, as well as structures
3623 ** MAKE-LOAD-FORM now has the required methods on
3624 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3625 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3626 keyword, and now implements the SLOT-NAMES argument.
3627 ** methods with &OPTIONAL arguments no longer allow too many
3628 arguments to be passed in the call without error.
3629 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3630 option is consistent with the required arguments of the generic
3631 function lambda list.
3632 * bug fix: REQUIRE accepts a string designator. (Thanks to
3634 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3635 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3636 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3637 * bug fix: The compiler now checks for duplicated variables in macro
3639 * bug fix: SETQ on globals returns the correct value.
3640 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3641 not a COMPILER-ERROR (followed by some other strange error on
3642 choosing the CONTINUE restart).
3643 * bug fix: make.sh and friends are now more consistent in the way that
3644 they look for GNU "make".
3646 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3647 * experimental native threads support (on x86 Linux >=2.4 only).
3648 This is not compiled in by default: you need to add :SB-THREAD to
3649 the target features. See the "Beyond ANSI" chapter of the manual
3651 * fix for longstanding nonANSIism: The old distinction between
3652 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3653 The return value from CL:FIND-CLASS is now a CLOS class, and
3654 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3655 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3656 * An interface to the MetaObject Protocol, as described in Kiczales,
3657 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3658 MIT Press, 1991, is available from the SB-MOP package.
3659 * incompatible change: the SB-PCL package should now be considered
3660 a private implementation detail, and no longer a semi-private MOP
3662 * minor incompatible change: due to rearrangement for threads, the
3663 control stack and binding stack are now allocated at arbitrary
3664 addresses instead of being hardcoded per-port. Users affected by
3665 this probably have to be doing advanced things with shared
3666 libraries, and will know who they are.
3667 * minor incompatible change: Previously, all --eval forms used were
3668 processed with READ before any of them were processed with EVAL.
3669 Now each --eval form is processed with both READ and EVAL before
3670 the next --eval form is processed. (Thus package operations like
3671 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3672 work as the user might reasonably expect.)
3673 * minor incompatible change: *STANDARD-INPUT* is now only an
3674 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3676 * minor incompatible change: Y-OR-N-P is now character-oriented,
3677 not line oriented. Also, YES-OR-NO-P now works without errors.
3678 (thanks to Antonio Martinez)
3679 * sb-aclrepl module improvements: an integrated inspector, added
3680 repl features, and a bug fix to :trace command.
3681 * Known functions, which cannot be open coded by the backend, are
3682 considered to be able to check types of their arguments. (fixing
3683 a bug report by Nathan J. Froyd)
3684 * fixed a bug in computing method discriminating functions: It is
3685 now possible to define methods specialized on classes which have
3686 forward-referenced superclasses. (thanks to Gerd Moellmann)
3687 * fixed evaluation order in optional entries (reported by Gilbert
3689 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3690 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3691 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3692 required-by-AMOP NAME argument, as well as CLASS and
3693 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3694 * fixed bug 20: DEFMETHOD can define methods using names that are
3695 not the proper names of classes to designate class specializers.
3696 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3697 Unix file descriptors, instead of blowing up. (thanks to Antonio
3699 * Garbage collection refactoring: user-visible change is that a
3700 call to the GC function during WITHOUT-GCING will not do garbage
3701 collection until the end of the WITHOUT-GCING. If you were doing
3702 this you were probably losing anyway.
3703 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3704 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3705 TYPEP the latter but not the former.
3706 * The compiler issues a full WARNING for calls to undefined functions
3707 with names from the CL package.
3708 * MAP-INTO for a vector destination is open coded. (reported by
3709 Brian Downing on c.l.l)
3710 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3711 documentation string.
3712 * fixed some bugs revealed by Paul Dietz' test suite:
3713 ** COPY-ALIST now signals an error if its argument is a dotted
3715 ** Condition slots are now accessed more correctly in the presence
3716 of multiple initargs for a given slot.
3717 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3718 exclude restarts of the same name associated with a different
3720 ** DEFCLASS of forward-referenced classes with another
3721 forward-referenced class in the superclasses list no longer
3723 ** Condition slots are now initialized once each, not multiple
3724 times. (thanks to Gerd Moellmann)
3725 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3727 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3728 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3729 arguments contain duplicated elements.
3730 ** RESTART-CASE understands local macros.
3731 ** RESTART-CASE associates exactly its own restarts with a condition.
3732 ** ENDP in safe mode checks its argument to be of type LIST.
3733 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3734 in question is unbound.
3735 ** Optimized MAKE-INSTANCE functions no longer cause internal
3736 assertion failures in the presence of duplicate initargs.
3737 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3738 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3739 propagated even in the ctor optimized implementation of
3741 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3743 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3744 * a better implementation of SXHASH on (simple) bit vectors,
3745 measured both in execution speed and in distribution of results
3746 over the positive fixnums, has been installed. Likewise, a better
3747 implementation of EQUAL for simple bit vectors is now available.
3748 * fixed CEILING optimization for a divisor of form 2^k.
3749 * fixed bug 240 (emitting extra style warnings "using the lexical
3750 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3751 by Antonio Martinez)
3752 * fixed SXHASH, giving different results for NIL depending on type
3753 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3754 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3755 variable. (found by Rolf Wester)
3756 * SBCL does not ignore type declarations for special
3757 variables. (reported by rif on c.l.l 2003-03-05)
3758 * some bug fixes in contrib/sb-aclrepl/
3759 * fixed some bugs revealed by Paul Dietz' test suite:
3760 ** a bug in the CONS type specifier, whereby the CAR and CDR
3761 types got intertwined, has been fixed;
3762 ** the type system is now able to reason about the interaction
3763 between INTEGER and RATIO types more completely;
3764 ** APPEND, [N]REVERSE and NRECONC check that those their
3765 arguments, which must be proper lists, are really so;
3766 ** An array specialized to be unable to hold elements has been
3767 implemented, as required -- yes, really -- by ANSI;
3768 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3769 on malformed property lists;
3771 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3772 * incompatible packaging change: in line with Unix convention,
3773 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3774 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3775 * REQUIRE and PROVIDE are now optionally capable of doing something
3776 useful. See the documentation string for REQUIRE.
3777 * infrastructure for a managed SBCL contrib system: contributed
3778 modules in this release include:
3779 ** the ASDF system definition facility;
3780 ** an interface to the BSD Sockets API;
3781 ** an ACL-like convenience interface to the repl;
3782 (thanks to Kevin Rosenberg)
3783 ** an implementation of ROTATE-BYTE, with efficient implementation
3785 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3786 gives a closer approximation to the right answer than previously.
3787 (thanks to Raymond Toy)
3788 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3789 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3790 optional environment arguments, as required by ANSI.
3791 * fixed bugs in other functions taking environment objects, allowing
3792 calls with an explicit NIL environment argument to be compiled
3794 * fixed bug 228: primary return values from
3795 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3796 COMPILE or FUNCTION.
3797 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3798 :TYPE will no longer signal errors on innocuous objects.
3799 * fixed bug 231b: SETQ is better at respecting type declarations in
3800 the lexical environment.
3801 * fixed a bug in DEFCLASS: classes named by symbols with no or
3802 unprintable packages can now be defined.
3803 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3804 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3805 * fixed compiler failure related to checking types of functions.
3806 (reported by Robert E. Brown)
3807 * the compiler is now much more consistent in its error-checking
3808 treatment of bounding index arguments to sequence functions: in
3809 (SAFETY 3) code, errors will be signalled in almost all cases if
3810 invalid sequence bounding indices are passed to functions defined
3811 by ANSI to operate on sequences.
3812 * fixed a bug in the build procedure: documentation of SBCL-specific
3813 packages is now preserved and available in the final Lisp image.
3814 * lifted FDEFINITION lookup out of loops in the implementation of
3815 many list operations. (thanks to Robert E. Brown)
3816 * fixed a bug in the reader: the #n# reader macro now works for
3817 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3818 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3819 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3820 E. Brown and Tony Martinez respectively)
3821 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3822 SLOT-BOUNDP: in particular, it is now able to optimize them much
3823 better, and is now not vulnerable to having packages renamed.
3824 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3825 always called when a slot is not present in an instance. (thanks
3827 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3828 longer signal an error on unreading a character following EOF on
3829 the previous constituent stream. (thanks to Tony Martinez)
3830 * fixed some bugs revealed by Paul Dietz' test suite:
3831 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3832 not just nonnegative fixnums;
3833 ** the logical bit-array operators such as BIT-AND now accept an
3834 explicit NIL for their "opt-arg" argument (to indicate a
3835 freshly-consed result bit-array);
3836 ** ELT now signals an error on an invalid sequence index in safe
3838 ** the type system is now cleverer about negations of numeric
3839 types, and consequently understands the BIGNUM and RATIO types
3841 ** the type system is now cleverer about the interaction between
3842 INTEGER and RATIO types: while bugs still remain, many more
3843 cases are accurately computed;
3844 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3845 if it is in the last clause;
3846 ** CONSTANTLY now correctly returns a side-effect-free function in
3848 ** DECLARE is no longer treated as a special-operator; in
3849 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3850 * incremented fasl file version number due to the change in the
3851 DEFSTRUCT-SLOT-DESCRIPTION structure.
3853 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3854 * minor incompatible change: code processed by the "interpreter" or
3855 EVAL now has a compilation optimization policy of (DEBUG 2)
3856 (changed from (DEBUG 1)) to improve debuggability of interactive
3857 development, and to allow the use of the debug RETURN command in
3859 * an experimental implementation of the RETURN command for the
3860 debugger has been included. (thanks to Frederik Kuivinen)
3861 * fixed bug 62: constraints were not propagated into a loop.
3862 * fixed bug in embedded calls of SORT (reported and investigated by
3864 * fixed some bugs revealed by Paul Dietz' test suite:
3865 ** printing and reading of arrays with some dimensions having
3866 length 0 (thanks to Gerd Moellmann);
3867 ** BOA constructor with &AUX argument without a default value does
3868 not cause a type error;
3869 ** CONSTANTP now returns true for all self-evaluating objects.
3871 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3872 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3873 accessors that are related by inheritance, as specified in the
3874 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3875 Valtteri Vuorikoski)
3876 * The compiler is now able to inline functions that were defined in
3877 a complex lexical environment (e.g. inside a MACROLET).
3878 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3880 * Support for the upcoming FreeBSD-5.0 release has been included.
3881 (thanks to Dag-Erling Smorgrav)
3882 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3883 effect when it is not in a toplevel context.
3884 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3885 stand a better chance of being correct. (thanks to Gerd
3887 * fixed bug in COERCE, which now signals an error on coercing a
3888 rational to a bounded real type which excludes the expected
3890 * The compiler is now able to derive types more accurately from the
3891 COERCE and COMPILE functions.
3892 * fixed bug 223: functional binding is considered to be constant
3893 only for symbols in the CL package.
3894 * fixed bug 231: SETQ did not check the type of a variable being set
3895 (reported by Robert E. Brown)
3896 * A new optimization for MAKE-INSTANCE has been included, fixing
3897 various bugs (including relating to :ALLOCATION :CLASS slots and
3898 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3900 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3901 ** As required by ANSI, LOOP now disallows anonymous collection
3902 clauses such as COLLECT I in conjunction with aggregate boolean
3903 clauses such as THEREIS (= I 1);
3904 ** LOOP now signals an error when any variable is reused in the
3905 same loop (including the potentially useful construct analogous
3906 to WITH A = 1 WITH A = (1+ A);
3907 ** IT is only a special loop symbol within the first clause of a
3908 conditional loop clause;
3909 ** LOOP with a typed iteration variable over a hashtable now
3910 signals a type error iff it should.
3911 * fixed some other bugs revealed by Paul Dietz' test suite:
3912 ** FILE-STREAM now names the class previously known as FD-STREAM;
3913 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3914 argument) no longer signals an error;
3915 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3916 of the slot symbol, rather than using the current package
3917 ((:CONC-NAME "") continues to intern the slot's name in the
3919 * incremented fasl file version number, because of the incompatible
3920 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3921 of the new implementation of DEFINE-COMPILER-MACRO.
3923 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3924 * Support for building SBCL for MIPS platforms running in
3925 little-endian mode has now been checked in, and basic
3926 functionality on said platforms verified.
3927 * minor incompatible change: PCL now records the pathname of a file
3928 in which methods and the like are defined, rather than its
3930 * minor incompatible change: TRUENAME now considers the truename of
3931 a file naming a directory to be the pathname with :DIRECTORY
3932 component indicating that directory.
3933 * minor incompatible change: a NAMED clause in the extended form of
3934 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3935 reason for the previous behaviour is unclear.
3936 * more systematization and improvement of CLOS and MOP conformance
3937 in PCL (thanks to Gerd Moellman and Pierre Mai):
3938 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3940 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3941 primary methods with no specializers;
3942 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3944 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3945 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3946 FORWARD-REFERENCED-CLASSes; error reporting on
3947 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3949 ** SXHASH on CLOS instances now uses a slot internal to the
3950 instance to return different numbers on distinct instances,
3951 while preserving the same return value through invocations of
3953 ** DEFMETHOD signals errors when methods with longer incongruent
3954 lambda lists are added to generic functions;
3955 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3956 CLASS, as specified in AMOP;
3957 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3958 on the order returned by the primary method for classes of
3959 class STANDARD-CLASS;
3960 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3961 * fixed some bugs shown by Paul Dietz' test suite:
3962 ** DOLIST puts its body in TAGBODY;
3963 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3965 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3966 value producing form;
3967 ** if more variables are given to PROGV than values, extra
3968 variables are bound and made to have no value;
3969 ** NSUBSTITUTE on list arguments gets the right answer with
3971 ** ELT signals an error of type TYPE-ERROR when the index argument
3972 is not a valid sequence index;
3973 ** LOOP signals (at macroexpansion time) an error of type
3974 PROGRAM-ERROR when duplicate variable names are found;
3975 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3976 ** FUNCALL of special-operators now cause an error of type
3978 ** PSETQ now works as required in the presence of side-effecting
3979 symbol-macro places;
3980 ** NCONC accepts any object as its last argument;
3981 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3983 ** loop-for-as-package does not require a package to be explicitely
3985 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3987 * fixed bug 166: compiler preserves "there is a way to go"
3988 invariant when deleting code.
3989 * fixed bug 172: macro lambda lists with required arguments after
3990 &REST arguments now cause an error to be signalled. (thanks to
3992 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3993 bug. (thanks to Matthew Danish)
3994 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3996 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3997 arguments are lexically rebound. (thanks to Gerd Moellmann and
3999 * fixed bug 194: error messages are now more informative when there
4000 is no primary method applicable in a call to a generic
4001 function. (thanks to Gerd Moellmann)
4002 * fixed bug in command line argument checking (thanks to Julian
4004 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4005 (thanks to Matthew Danish)
4006 * incremented fasl file version number, because of the
4007 SXHASH-related changes in the layout of CLOS data structures
4009 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4010 * minor incompatible change: The runtime (the Unix executable named
4011 "sbcl") is now much pickier about the .core files it will load.
4012 Essentially it now requires .core files to descend from the same
4013 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4014 as the runtime does. (The intent is to prevent the crashes which
4015 can occur, and which can even be reported as mysterious failures,
4016 when people patch the sources or change the build parameters
4017 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4018 sbcl and .core files.)
4019 * fixed bug: VALUES-LIST is no longer optimized away.
4020 * fixed bug 142: The FFI conversion of C string values to Lisp
4021 string values no longer conses excessively. (thanks to Nathan
4022 Froyd porting Raymond Toy's fix to CMU CL)
4023 * began to systematize and improve MOP conformance in PCL (thanks to
4024 Nathan Froyd, Gerd Moellman and Pierre Mai):
4025 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4027 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4028 ** FINALIZE-INHERITANCE is now called on class finalization;
4029 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4030 argument precedence order.
4031 * fixed bug 202: The compiler no longer fails on functions whose
4032 derived types contradict their declared type.
4033 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4034 so it can be non-toplevel.
4035 * The fasl file version number has changed (because of the new
4036 implementation of DEFMACRO).
4037 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4038 safe code, that any length requirement by their type-specifier
4039 argument is valid. The exceptions to this are described in bug
4041 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4042 functions now check the types of their inputs as required by ANSI.
4043 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4044 introduced symbol is DECLAREd to be SPECIAL.
4045 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4046 * fixed bug: :COUNT argument to sequence functions may be negative
4047 * fixed bug: body of DO-SYMBOLS may contain declarations
4048 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4049 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4050 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4051 symbol macro only once
4052 * fixed printing of call frame when argument list is unavailable
4053 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4054 * compiler no longer signals WARNING on unknown keyword
4057 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4058 * A beta-quality port to the mips architecture running Linux,
4059 based on the old CMUCL backend, has been made. It has been tested
4060 on a big-endian kernel, and works sufficiently well to be able to
4061 rebuild itself; it has not been tested in little-endian mode.
4062 * fixed an inconsistency between gencgc.c and purify.c which made
4063 dumping/loading .core files unreliable
4064 * fixed bug 120a: The compiler now deals correctly with IFs where
4065 the consequent is the same as the alternative, instead of
4066 misderiving the return type. (thanks to Alexey Dejneka)
4067 * fixed bug 113: Logical pathnames are now dumpable (the logical
4068 host is resolved at load-time, throwing an error if it is not
4070 * fixed bug 174: FORMAT's error message is slightly clearer when a
4071 non-printing character is used in a format directive.
4072 * fixed several bugs in compiler checking of type declarations, i.e.
4073 violations of the Python "declarations are assertions" principle
4074 (thanks to Alexey Dejneka)
4075 * fixed several bugs in PCL's error checking (thanks to Gerd
4077 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4079 * fixed bug in compilation of functions as first class values
4080 (thanks to Antonio Martinez-Shotton)
4081 * The compiler's handling TYPE-ERRORs which it can prove will
4082 inevitably happen at runtime has been cleaned up and corrected
4083 in several ways. (thanks to Alexey Dejneka)
4084 * improved argument type checking for various basic arithmetic
4085 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4086 lavished on them in the past that they can be compiled in many
4087 ways in different special cases
4088 * fixed bug 181: compiler checks validity of user supplied type
4090 * cleaned up code flushing in optimization: Function calls which
4091 should signal errors for safety purposes (e.g. which ANSI says
4092 should signal errors when their arguments are of incorrect type)
4093 are no longer optimized away.
4094 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4095 * incremented fasl file version number, because changes in the
4096 implementation of sequence functions like COERCE caused
4097 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4098 in old inline expansions) to become undefined. (Actually these
4099 changes were later undone, so we might very well be binary
4100 compatible with 0.7.7 after all, but leaving the version number
4101 incremented seemed like the simplest and most conservative
4104 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4105 * An alpha-quality port to the parisc architecture running Linux,
4106 based on the old CMUCL backend, has been made. This, even more so
4107 than the other backends, should be considered still a work in
4108 progress; known problems include that the Linux kernel in 64-bit
4109 mode does not propagate the correct sigcontext structure to
4110 userspace, and consequently SBCL on a parisc64 kernel will not
4112 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4113 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4114 suppressed.) Also now that the compiler is looking at declarations
4115 in the environment, it checks optimization declarations as well,
4116 and suppresses inlining when (> DEBUG SPEED).
4117 * More fixes have been made to treatment of floating point exception
4118 treatment and other Unix signals. In particular, floating point
4119 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4120 * The detection and handling of control stack exhaustion (infinite
4121 or very deeply nested recursion) has changed. Stack exhaustion
4122 detection is now done by write-protecting pages at the OS level
4123 and applies at all optimization settings; when found, a
4124 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4125 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4126 be caught using IGNORE-ERRORS.
4127 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4128 correctly when transforming recursive LABELS functions to LETs.
4129 (thanks to Alexey Dejneka)
4130 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4131 that are names of constants or global variables.
4132 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4133 alien routines with docstrings.
4134 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4135 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4137 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4138 (thanks to Eric Marsden)
4139 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4140 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4141 * Bug fix: The SPARC backend can now compile functions involving
4142 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4143 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4144 to a functions expecting a PATHNAME-DESIGNATOR.
4145 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4146 lambda lists. (thanks to Alexey Dejneka)
4147 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4148 functions so that EXPORTing the name of the class doesn't cause
4149 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4150 to Antonio Martinez for reporting this)
4151 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4152 constant-folded without failing an assertion. (thanks to Einar
4153 Floystad Dorum for reporting this)
4154 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4155 types are now dealt with more correctly by the compiler.
4156 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4157 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4158 behaviour analogous to RENAME-FILE. This puts its behaviour more
4159 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4161 * The fasl file version number has changed again. (because of the
4162 bug fix involving the names of PCL MAKE-INSTANCE functions)
4164 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4165 * bug fix: Floating point exceptions are treated much more
4166 consistently on the x86/Linux and PPC/Linux platforms.
4167 * Array initialization with :INITIAL-ELEMENT is now much faster for
4168 cases when the compiler cannot open code the array creation, but
4169 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4170 array accesses have also seen a speed increase.
4171 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4172 specified. (This was at the root of some bad interactions between
4173 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4175 * bug fix: Internal error arguments for undefined functions are now
4176 computed correctly on the PPC/Linux platform.
4177 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4178 Raymond Toy's patch for CMU CL)
4179 * Support for the Solaris 9 operating environment has been included
4180 (thanks to Daniel Merritt)
4181 * A very ugly but hopefully complete draft of the missing FFI chapter
4182 of the manual has been created by reformatting the corresponding
4183 CMU CL manual chapter into (currently very ugly and incoherent)
4184 DocBook and bringing it up to date for SBCL behavior. Thus, the
4185 manual is now essentially complete, at least by my extreme
4186 once-and-only-once standards, whereby it's acceptable to refer to
4187 the doc strings of SB-EXT functions as the primary documentation.
4188 * The fasl file version number has changed again, due to cleanup of
4189 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4190 is no longer a static symbol.)
4192 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4193 * SBCL now builds with OpenMCL (version 0.12) as the
4194 cross-compilation host; also, more progress has been made toward
4195 bootstrapping under CLISP.
4196 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4198 * bug 158 fixed: The compiler can now deal with integer loop
4199 increments different from 1; fixing this turned out also to fix
4201 * bug 169 fixed: no more bogus warnings about using lexical bindings
4202 despite the presence of perfectly good SPECIAL declarations (thanks
4203 to David Lichteblau)
4204 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4205 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4206 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4208 * bug 180 fixed: Method combination specifications no longer ignore
4209 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4210 * bug fix: Structure type predicate functions now check their argument
4211 count as they should.
4212 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4213 correctly. (thanks to Pierre Mai)
4214 * minor incompatible change: The --noprogrammer option is deprecated
4215 in favor of the new --disable-debugger option, which is very similar.
4216 (The major difference is that it takes effect at a slightly different
4217 time at startup, causing handling of errors in --sysinit and
4218 --userinit files will be affected differently.) The
4219 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4220 been added to allow this functionality to be controlled from ordinary
4221 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4222 maintainers, who might want to run non-interactive scripts to
4223 build SBCL cores which will later be used interactively.)
4224 * minor incompatible change: The LOAD function no longer, when given
4225 a wild pathname to load, loads all files matching that pathname.
4226 Instead, an error of type FILE-ERROR is signalled.
4228 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4229 * bug 147 fixed: The compiler preserves its block link/count
4230 invariants more correctly now so that it doesn't crash. (thanks
4232 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4234 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4235 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4236 no-value-for-this-character as NIL (as specified by ANSI).
4237 * HOST-NAMESTRING on physical pathnames now returns a string that is
4238 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4239 (thanks to Christophe Rhodes)
4240 * The Alpha port handles icache flushing more correctly. (thanks to
4242 * More progress has been made toward bootstrapping under CLISP. (thanks
4243 to Christophe Rhodes)
4244 * The fasl file format has changed again, because dynamic loading
4245 on OpenBSD (which has non-ELF object files) motivated some cleanups
4246 in the way that foreign symbols are transformed and passed around.
4247 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4248 is no longer treated as whitespace by the reader, but instead as
4249 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4250 |A
\7fB|, instead of A as it used to.
4252 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4253 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4254 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4255 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4256 this as of 0.7.1.45, but was left out of the previous news section
4257 (thanks to Dan Barlow)
4258 * SBCL now runs on the Solaris operating system on SPARC architectures
4259 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4260 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4261 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4262 * SPARC backend cleanups, allowing builds of cores optimized for V8
4263 and V9 SPARCS, and also emission of code targeted to a particular
4264 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4266 * SBCL is closer to bootstrapping under CLISP, thanks to various
4267 fixes by Christophe Rhodes.
4268 * The fasl file format has changed again, to allow the compiler's
4269 INFO database to support symbol macros.
4270 * The user manual (in doc/) is formatted into HTML more nicely.
4271 (thanks to coreythomas)
4272 * The system is smarter about SUBTYPEP relationships, especially
4273 those involving NOT types (including types such as ATOM which are
4274 represented internally using NOT types). Thus SUBTYPEP is less
4275 likely to return (VALUES NIL NIL) in general, and in particular
4276 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4278 * The fasl file format has changed again, because the internal
4279 representation of types now includes a new slot to support the new
4280 SUBTYPEP-of-NOT-types logic.
4281 * (not a change in the main branch of SBCL, but a related prototype
4282 which can hopefully be merged into the main branch of SBCL in the
4283 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4284 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4285 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4286 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4287 dispatch macro character combinations. (thanks to Alexey Dejneka)
4288 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4289 that superficially look like logical namestrings correctly.
4290 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4292 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4293 default supplied-p) for &optional and &key arguments. (thanks to
4296 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4297 * incompatible change: The compiler is now less aggressive about
4298 tail call optimization, doing it only when (> SPACE DEBUG) or
4299 (> SPEED DEBUG). (This is an incompatible change because there are
4300 programs which relied on the old CMU-CL-style behavior to optimize
4301 away their unbounded recursion which will now die of stack overflow.)
4302 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4303 for non-GENCGC systems has been increased to 20M (since that
4304 seems much closer to the likely performance optimum for modern
4305 systems than the old 4M value was)
4306 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4307 and *DEBUG-PRINT-LEVEL*
4308 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4309 of CMU CL's support for SPARC, and various endianness and other
4310 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4311 * new syntactic sugar for the Unix command line: --load foo.bar is now
4312 an alternate notation for --eval '(load "foo.bar")'.
4314 ** The system now detects stack overflow and handles it gracefully,
4315 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4316 optimization settings. (This is a good thing in general, and
4317 its introduction in this version should be particularly timely
4318 for anyone whose code fails because of suppression of tail
4320 ** The system now hunts for the C variable "environ" in a more
4321 devious way, to avoid segfaults when the C library version differs
4322 between compile time and run time. (thanks to Christophe Rhodes)
4323 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4324 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4325 ** The compiler no longer issues bogus style warnings for undefined
4326 classes in the same source file as the DEFCLASSes which defined
4327 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4329 ** fixes in CONDITION class precedence list for undefined function
4330 errors (thanks to Alexei Dejneka)
4331 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4332 correctly. (thanks to Dan Barlow)
4333 ** portability fixes aiming at bootstrapping under CLISP (thanks
4334 to Dave McDonald and Christophe Rhodes)
4335 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4336 ** fixes in type translation and and type inference (thanks to
4338 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4339 ** various fixes in the new ports (thanks to Dan Barlow)
4340 * several changes related to debugging:
4341 ** suppression of tail recursion, as noted above
4342 ** stack overflow detection, as noted above
4343 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4344 is now the default. (For some time encapsulation has been more
4345 reliable than the breakpoint-based :ENCAPSULATE NIL
4346 implementation, at least on X86 systems; and I just noticed that
4347 encapsulation also seems closer to the spirit of the ANSI
4350 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4352 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4353 up properly again. (There was a packaging bug in 0.7.0 which
4354 left their definitions in SB-SYS::LOAD-FOREIGN and
4355 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4356 vital for most things which interface to C-level interfaces,
4357 like extensions working with sockets or databases or
4358 Perl-compatible regexes or whatever, and the need to fix
4359 this bug is the main reason that 0.7.1 was released so
4361 ** DEFGENERIC is now choosier about the methods it redefines, so that
4362 reLOADing a previously-LOADed file containing DEFGENERICs does
4363 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4364 cycle now works as it should. (thanks to Alexey Dejneka)
4365 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4366 fixed by Christophe Rhodes. (He actually submitted this patch
4367 months ago, and I delayed until after 0.7.0.)
4368 ** Bug 111 (internal compiler confusion about runtime checks on
4369 FUNCTION types) was fixed by Alexey Dejneka.
4370 * Some internal cleanups (getting rid of variables which aren't
4371 needed now that the byte interpreter is gone) caused the fasl
4372 file format number to change again.
4374 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4375 * major incompatible change: The default fasl file extension, i.e. the
4376 default extension for files produced by COMPILE-FILE, has changed
4377 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4379 ** There are many changes in the implementation of the compiler.
4380 SBCL is now essentially a compiler-only implementation of ANSI
4381 Common Lisp. EVAL still "interprets" a few special cases, but
4382 almost all the interesting cases are handled by creating
4383 a LAMBDA expression, calling COMPILE on it, then calling
4384 FUNCALL on the result.
4385 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4386 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4387 Since the code is newer, there might still be some new bugs
4388 (though not as many as before Martin Atzmueller's fixes:-). But
4389 the new code is substantially simpler and clearer, and hopefully
4390 any remaining bugs will be simpler, less fundamental, and more
4391 fixable then the bugs in the old code.
4392 ** The revised compiler is still a little unsteady on its feet.
4394 *** The debugging information it produces (particularly the names
4395 of FUNCTION objects) is sometimes much less useful than what
4396 the old compiler produced.
4397 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4398 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4399 within a MACROLET) has been temporarily weakened.
4400 ** There are new compiler optimizations for various functions:
4401 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4402 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4403 *** the math functions TRUNCATE, FLOOR, and CEILING
4404 *** the function-of-all-trades COERCE
4405 Mostly these should be transparent, but there's one
4406 potentially-annoying problem (bug 117): when the compiler
4407 inline-expands a function and does type analysis on the result,
4408 it can create control paths which have type mismatches, and
4409 when it can't prove that those control paths aren't taken,
4410 it will issue WARNINGs about the type mismatches. This is
4411 a particular problem in practice for the new sequence functions.
4412 It's not clear how this should be fixed, and for now, a
4413 workaround is given in the entry for 117 in the BUGS file.
4414 ** (Because of the interaction between the two previous items --
4415 occasional inlining problems and new inline expansions -- some
4416 of the new sequence function optimizations won't really kick in
4417 completely until debugging information, and then inlining, are
4418 straightened out in some future version.)
4419 * minor incompatible changes:
4420 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4421 DIRECTORY no longer implicitly promotes NIL slots of its
4422 pathname argument to :WILD. In particular, when you ask for the
4423 contents of a directory (which you used to be able to do without
4424 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4425 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4426 ** changes in behavior that ANSI explicitly defines to be
4427 implementation dependent:
4428 *** The new compiler-only implementation still conforms with ANSI,
4429 but acts a little different than before. Besides the obvious
4430 changes in performance tradeoffs (that the cost per form passed
4431 to EVAL has gone up, and the cost per form executed by EVAL
4432 has gone down), the behavior of the system changes a little
4433 because there are no longer any interpreted function objects.
4434 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4435 e.g. doing COMPILE on the output of interactive DEFUN is
4437 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4439 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4440 has changed from (:CL) to NIL.
4441 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4442 e.g. #\Newline and #\Tab, don't have names specified in the
4443 ANSI Common Lisp standard, is now based on their ASCII symbolic
4444 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4445 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4446 are no longer used for output.
4447 ** changes in internal implementation constants:
4448 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4449 4 million. (If your application spends a lot of time GCing and
4450 you have a lot of RAM, you might want to experiment with
4451 increasing it even more.)
4452 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4453 However, almost all old code should still continue to work without
4454 immediate update, as SB-C-CALL is now a (deprecated) nickname
4456 ** Old operator names in the style DEF-FOO are now deprecated in
4457 favor of new corresponding names DEFINE-FOO, for consistency with
4458 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4459 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4460 internal symbols, but a few supported extensions like
4461 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4462 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4463 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4464 etc. as you get deeper into recursive calls to the debugger
4465 command loop, instead of the old "5]", "5]]", "5]]]"
4466 sequence. (I was motivated to do this when squabbles between
4467 ILISP and SBCL left me very deeply nested in the debugger. In the
4468 short term, this change will probably provoke more ILISP/SBCL
4469 squabbles, but hopefully it will be an improvement in the long run.)
4470 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4471 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4472 function, since declaiming return types involving aliens is
4473 (1) annoyingly messy to do by hand and (2) vital to efficient
4474 compilation of code which calls such functions.
4475 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4476 longer reexported by the SB-EXT package. They're solely useful
4477 for alien code, so it seems more logical that you should get
4478 them from the SB-ALIEN package, not in SB-EXT.
4479 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4480 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4481 features. Instead, the code that they used to control is always
4482 built into the system.
4483 * many other bug fixes
4484 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4485 advantage of the new EVAL-WHEN stuff and to clean them up in
4486 general, and they are now more ANSI-compliant in a number of
4487 ways. Martin Atzmueller is responsible for a lot of this.
4488 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4490 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4491 *** correct ERROR type for various file operations
4492 *** some fixes for Lisp streams
4493 *** DEFMETHOD syntax checking
4494 *** changing old weird representation of debug information as
4495 strings (which, among their other deficiencies, don't transform
4496 correctly when you rename packages, and don't change their
4497 print representation when you change things like *PACKAGE*
4498 and *PRINT-LENGTH*) to symbols and lists of symbols
4499 He also made several improvements and fixed several bugs in DESCRIBE.
4500 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4502 *** misbehavior of WRITE-STRING/WRITE-LINE
4503 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4504 and several other LOOP problems as well
4505 *** DIRECTORY when similar filenames are present
4506 *** DEFGENERIC with :METHOD options
4507 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4508 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4509 *** argument ordering in FIND with :TEST option
4510 *** mishandled package designator argument in APROPOS-LIST
4511 *** various problems in the backquote readmacro
4512 *** a bug in APROPOS
4513 *** probably some others that I'm not describing very well here,
4514 since the CVS log documents them by reference to sbcl-devel
4515 messages, and the SourceForge archives aren't working well.:-(
4516 ** Dan Barlow improved the Alpha port (and is making progress on the
4517 PPC port, for those of you who think different).
4518 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4519 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4520 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4521 continues to work on the SPARC port (for those of you in a position
4522 to look down upon our little PC-compatible boxes from a great height).
4523 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4524 and uses that copy, rather than the current dynamic value, when
4525 it's trying to decide whether to truncate output. Thus e.g.
4526 (let ((*print-lines* 50))
4527 (pprint-logical-block (stream nil)
4529 (let ((*print-lines* 8))
4530 (print (aref possiblybigthings i) stream)))))
4531 should now truncate the logical block only at 50 lines, instead of
4532 often truncating it at 8 lines, as it did before.
4533 * The doc/cmucl/ directory, containing old CMU CL documentation
4534 from the time of the fork, is no longer part of the base system.
4535 SourceForge has shut down its anonymous FTP service, and with it
4536 my original plan for distributing the old CMU CL documentation
4537 there. For now, if you need these files you can download an old
4538 SBCL source release and extract them from it.
4539 * The fasl file version number changed again, for dozens of reasons,
4540 some of which are apparent above.
4542 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4543 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4544 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4545 patch, so that DISASSEMBLE output is much nicer.
4546 * The code in the SB-PROFILE package now seems reasonably stable.
4547 I still haven't decided what the final interface should look like
4548 (I'd like PROFILE to interact cleanly with TRACE, since both
4549 facilities use function encapsulation) but if you have a need
4550 for profiling now, you can probably use it successfully with
4551 the current CMU-CL-style interface.
4552 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4553 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4554 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4555 link now returns the dangling link itself, and for similar
4556 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4557 link itself. (In these cases the old code signalled an error and
4558 looped endlessly, respectively.) Thus, DIRECTORY now works even
4559 in the presence of dangling and cyclic symbolic links.
4560 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4561 is now a supported extension again, since the consensus on
4562 sbcl-devel was that it can be useful for ordinary development
4563 work, not just for debugging SBCL itself.
4564 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4565 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4566 that currently-defined functions might be redefined later with
4567 different return types.
4568 * Hash tables can be printed readably, as inspired by CMU CL code
4569 of Eric Marsden and SBCL code of Martin Atzmueller.
4570 * better error handling in CLOS method combination, thanks to
4571 Martin Atzmueller porting Pierre Mai's CMU CL patches
4572 * more overflow fixes for >16Mbyte I/O buffers
4573 * A bug in READ has been fixed, so that now a single Ctrl-D
4574 character suffices to cause end-of-file on character streams.
4575 In particular, now you only need one Ctrl-D at the command
4576 line (not two) to exit SBCL.
4577 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4579 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4580 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4581 does the right thing.
4582 * The implementation of some type tests, especially for CONDITION
4583 types, is now tidier and maybe faster, due to CMU CL code
4584 originally by Douglas Crosher, ported by Martin Atzmueller.
4585 * Some math functions have been fixed, and there are new
4586 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4587 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4588 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4589 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4590 likely to be built into sbcl-0.7.0.)
4591 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4592 CL, ported to SBCL by Martin Atzmueller)
4593 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4594 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4595 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4596 * There's a new slam.sh hack to shorten the edit/compile/debug
4597 cycle for low-level changes to SBCL itself, and a new
4598 :SB-AFTER-XC-CORE target feature to control the generation of
4599 the after-xc.core file needed by slam.sh.
4600 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4601 COMPILE-FILE is no longer supported, so that now every function
4602 gets an entry point, so that block compilation looks a little
4603 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4604 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4605 returns the number of bytes consed since the system started,
4606 rather than the number consed since the first time the function
4607 was called. (The new definition parallels ANSI functions like
4608 CL:GET-INTERNAL-RUN-TIME.)
4609 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4610 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4611 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4612 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4613 * Fasl file version numbers are now independent of the target CPU,
4614 since historically most system changes which required version
4615 number changes have affected all CPUs equally. Similarly,
4616 the byte fasl file version is now equal to the ordinary
4619 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4620 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4621 is no longer recognized. I apologize for this, because it was
4622 listed in SB-EXT as a supported extension, but I found that
4623 its existing behavior was poorly specified, as well as incorrectly
4624 specified, and it looked like too much of a mess to straighten it
4625 out. I have enough on my hands trying to get ANSI stuff to work..
4626 * many patches ported from CMU CL by Martin Atzmueller, with
4627 half a dozen bug fixes in pretty-printing and the debugger, and
4628 half a dozen others elsewhere
4629 * fixed bug 13: Floating point infinities are now supported again.
4630 They might still be a little bit flaky, but thanks to bug reports
4631 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4632 as flaky as they were.
4633 * The --noprogrammer command line option is now supported. (Its
4634 behavior is slightly different in detail from what the old man
4635 page claimed it would do, but it's still appropriate under the
4636 same circumstances that the man page talks about.)
4637 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4638 are now supported, and enabled by default. Thus, the compiler can
4639 handle many floating point and complex operations much less
4640 inefficiently. (Thus e.g. you can implement a complex FFT
4642 * The compiler now detects type mismatches between DECLAIM FTYPE
4643 and DEFUN better, and implements CHECK-TYPE more correctly, and
4644 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4645 thanks to patches from Martin Atzmueller.
4646 * various fixes to make the cross-compiler more portable to
4647 ANSI-conforming-but-different cross-compilation hosts (notably
4648 Lispworks for Windows, following bug reports from Arthur Lemmens)
4649 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4650 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4651 fixed thanks to Pierre Mai's CMU CL patches.
4652 * fixes to keep the system from overflowing internal counters when
4653 it tries to use i/o buffers larger than 16M bytes
4654 * fixed bug 45a: Various internal functions required to support
4655 complex special functions have been merged from CMU CL sources.
4656 (When I was first setting up SBCL, I misunderstood a compile-time
4657 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4658 * improved support for type intersection and union, fixing bug 12
4659 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4660 more obscure bugs as well
4661 * some steps toward byte-compiling non-performance-critical
4662 parts of the system, courtesy of patches from Martin Atzmueller
4663 * Christophe Rhodes has made some debian packages of sbcl at
4664 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4665 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4666 stable, but are nonetheless usable. When he's ready, I'd be happy
4667 to add them to the SourceForge "File Releases" section. (And if
4668 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4669 * new fasl file format version number (because of changes in
4670 internal representation of (OR ..) types to accommodate the new
4671 support for (AND ..) types, among other things)
4673 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4674 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4676 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4678 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4679 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4680 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4681 * DESCRIBE now works on structure objects again.
4682 * Most function call argument type mismatches are now handled as
4683 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4684 know whether the function will be redefined before the call is
4685 executed. (The compiler could flag local calls with full WARNINGs,
4686 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4687 it doesn't keep track of enough information to know whether calls
4688 are local in this sense.)
4689 * Compiler output is now more verbose, with messages truncated
4690 later than before. (There should be some supported way for users
4691 to override the default verbosity, but I haven't decided how to
4692 provide it yet, so this behavior is still controlled by the internal
4693 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4694 src/compiler/ir1util.lisp.)
4695 * Fasl file format version numbers have increased again, because
4696 support for the Gray streams extension changes the layout of the
4697 system's STREAM objects.
4698 * The Gray subclassable streams extension now works, thanks to a
4699 patch from Martin Atzmueller.
4700 * The full LOAD-FOREIGN extension (not just the primitive
4701 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4702 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4703 but like most other programs, it defaults to copying the Unix
4704 environment from the original process instead of starting the
4705 new process in an empty environment.
4706 * Extensions which manipulate the Unix environment now support
4707 an :ENVIRONMENT keyword option which doesn't smash case or
4708 do other bad things. The CMU-CL-style :ENV option is retained
4709 for porting convenience.
4710 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4711 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4713 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4715 * A patch from Martin Atzmueller seems to have solved the SIGINT
4716 problem, and as far as we know, signal-handling now works cleanly.
4717 (If you find any new bugs, please report them!)
4718 * The system no longer defaults Lisp source file names to types
4719 ".l", ".cl", or ".lsp", but only to ".lisp".
4720 * The compiler no longer uses special default file extensions for
4721 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4722 seems to expect a single default extension for all compiled code,
4723 and there's no compelling reason to try to stretch the standard
4724 to allow two different extensions.) Instead, byte-compiled files
4725 default to the same extension as native-compiled files.
4726 * Fasl file format version numbers have increased again, because
4727 a rearrangement of internal implementation packages made some
4728 dumped symbols in old fasl files unreadable in new cores.
4729 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4730 many fewer weird special cases.
4731 * Bug #17 (differing COMPILE-FILE behavior between logical and
4732 physical pathnames) has been fixed, and some related misbehavior too,
4733 thanks to a patch from Martin Atzmueller.
4734 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4735 by Tim Moore, ported to SBCL by Martin Atzmueller.
4736 * Martin Atzmueller fixed several filesystem-related problems,
4737 including bug #36, in part by porting CMU CL patches, which were
4738 written in part by Paul Werkowski.
4739 * More compiler warnings in src/runtime/ are gone, thanks to
4740 more patches from Martin Atzmueller.
4741 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4744 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4746 * DESCRIBE now works on CONDITION objects.
4747 * The debugger now handles errors which arise when trying to print
4748 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4750 * The build system now uses an additional file, customize-target-features.lisp,
4751 to allow local modifications to the target *FEATURES* list. (The point of
4752 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4753 debugging features enabled, without having to worry about propagating it
4754 into everyone's system when I do a "cvs update".) When no
4755 customize-target-features.lisp file exists, the target *FEATURES* list
4756 should be constructed the same way as before.
4757 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4758 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4759 warn about behavior which is undefined under the ANSI spec. Note: This
4760 is specified by ANSI, but it's not very popular with programmers.
4761 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4762 macro in the SBCL sources for an example of a workaround which you
4763 might use to make portable ANSI-standard code which does what you want.
4764 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4765 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4766 when it's used as a non-toplevel form. (This is required in order
4767 to implement the DEFCONSTANT-EQX macro.)
4768 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4769 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4770 funny things, due to bugs in the implementation of EVAL-WHEN
4771 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4772 non-toplevel DEFCONSTANTs are uncommon.)
4773 * The core file version number and fasl file version number have been
4774 incremented, because the old noncompliant DEFCONSTANT behavior involved
4775 calling functions which no longer exist, and because I also took the
4776 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4777 * fixed bug 1 (error handling before read-eval-print loop starts), and
4778 redid debugger restarts and related debugger commands somewhat while
4780 ** The QUIT debugger command is gone, since it did something
4781 rather different than the SB-EXT:QUIT command, and since it never
4782 worked properly outside the main toplevel read/eval/print loop.
4783 Invoking the new TOPLEVEL restart provides the same functionality.
4784 ** The GO debugger command is also gone, since you can just invoke
4785 the CONTINUE restart directly instead.
4786 ** The TOP debugger command is also gone, since it's redundant with the
4787 FRAME 0 command, and since it interfered with abbreviations for the
4789 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4791 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4792 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4793 some porting work by Martin Atzmueller)
4794 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4795 with a boatload of patches which he ported to SBCL. Now that those
4797 ** The system tries to make sure that its low-priority messages
4798 are prefixed by semicolons, to help people who like to use
4799 syntax highlighting in their ILISP buffer. (This patch
4800 was originally due to Raymond Toy.)
4801 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4802 patches originally written by Raymond Toy.
4803 ** The compiler understands coercion between single-value and
4804 multiple-VALUES type expressions better, getting rid of some very
4805 weird behavior, thanks to patches originally by Robert MacLachlan
4806 and Douglas Crosher.
4807 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4808 lambda lists, thanks to a patch originally by Pierre Mai.
4809 ** The system no longer bogusly warns about "abbreviated type
4811 ** The compiler gets less confused by inlining and RETURN-FROM,
4812 thanks to some patches originally by Tim Moore.
4813 ** The system no longer hangs when dumping circular lists to fasl
4814 files, thanks to a patch originally from Douglas Crosher.
4815 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4816 undefined function error.
4817 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4818 in structure slot initforms) for now, documented workaround instead:-|
4819 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4820 * fixed bug 5: added stubs for various Gray stream functions called
4821 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4822 installed, at least appropriate type errors are generated
4823 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4824 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4825 consistently in DEFMETHOD forms.
4826 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4827 it doesn't seem to affect SBCL after all
4828 * The C runtime system now builds with better optimization and many
4829 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4831 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4833 * The system is now under CVS at SourceForge (instead of the
4834 CVS repository on my home machine).
4835 * The new signal handling code has been tweaked to treat register
4836 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4837 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4838 downstream, e.g. in debug-int.lisp, has implicit dependencies
4839 on the unsignedness of integer representation of machine words,
4840 and that caused the system to bomb out with infinite regress
4841 when trying to recover from type errors involving signed values,
4842 e.g. (BUTLAST '(1 2 3) -1).)
4843 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4844 (This was one of the bugs Peter Van Eynde reported back in July.)
4845 * The system now uses code inspired by Colin Walters' O(N)
4846 implementation of MAP (from the cmucl-imp@cons.org mailing
4847 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4848 inline the MAP operation, and there is more than one
4849 sequence argument to the MAP call (so that it can't just
4850 do ETYPECASE once and for all based on the type of the
4851 single sequence argument). (The old non-inline implementation
4852 of the general M-argument sequence-of-length-N case required
4853 O(M*N*N) time when any of the sequence arguments were LISTs.)
4854 * The QUIT :UNIX-CODE keyword argument has been renamed to
4855 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4856 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4858 * Raymond Wiker's patches to port dynamic loading from Linux to
4859 FreeBSD have been added.
4860 * The BUGS file is now more nearly up to date, thanks in large part
4861 to Martin Atzmueller's review of it.
4862 * The debugger now flushes standard output streams before it begins
4863 its output ("debugger invoked" and so forth).
4864 * The core version number and fasl file version number have both
4865 been incremented, because of incompatible changes in the layout
4867 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4868 used to not be called for a saved Lisp image.)
4869 * Martin Atzmueller's version of a patch to fix a compiler crash,
4870 as posted on sbcl-devel 13 September 2000, has been installed.
4871 * Instead of installing Martin Atzmueller's patch for the
4872 compiler transform for SUBSEQ, I deleted the compiler transform,
4873 and transforms for some similar consing operations.
4874 * A bug in signal handling which kept TRACE from working on OpenBSD
4876 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4877 away by constant folding
4878 * The system now defines its address space constants in one place
4879 (in the Lisp sources), and propagates them automatically elsewhere
4880 (through GENESIS and the sbcl.h file). Therefore, patching the
4881 address map is less unnecessarily tedious and error-prone. The
4882 Lisp names of address space constants have also been systematized.
4883 * CVS tags like dollar-Header-dollar have been removed from
4884 the sources, because they have never saved me trouble and
4885 they've been source of trouble working with patches and other
4886 diff-related operations.
4887 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4888 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4890 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4892 * The system has been ported to OpenBSD.
4893 * The system now compiles with a simple "sh make.sh" on the systems
4894 that it's supported on. I.e., now you no longer need to tweak
4895 text in the target-features.lisp-expr and symlinks in src/runtime/
4896 by hand, the make.sh takes care of it for you.
4897 * The system is no longer so grossly inefficient when compiling code
4898 involving vectors implemented as general (not simple) vectors (VECTOR T),
4899 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4900 which dares to use the various sequence functions on non-simple
4901 vectors, takes less of a performance hit.
4902 * There is now a primitive type predicate VECTOR-T-P
4903 to test for the (VECTOR T) type, so that e.g.
4904 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4905 can now be compiled with some semblance of efficiency. (The old code
4906 turned the type declaration into a full call to %TYPEP at runtime!)
4907 * AREF on (VECTOR T) is still not fast, since it's still compiled
4908 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4909 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4910 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4911 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4912 without making full calls to SUBTYPEP at runtime.
4913 (Some analogous efficiency issues for non-simple vectors specialized to
4914 element types other than T, or for non-simple multidimensional arrays,
4915 have not been addressed. They could almost certainly be handled the
4916 same way if anyone is motivated to do so.)
4917 * The changes in array handling break binary compatibility, so
4918 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4919 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4920 instead of (VALUES T T).
4921 * By following the instructions that Dan Barlow posted to sbcl-devel
4922 on 2 July 2000, I was able to enable primitive dynamic object
4923 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4924 functionality is not implemented (since it calls ld to resolve
4925 library references automatically, requiring RUN-PROGRAM for its
4926 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4927 try to resolve library references) is now supported.
4928 * The system now flushes the standard output streams when it terminates,
4929 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4930 them at several other probably-convenient times, e.g. in each pass of
4931 the toplevel read-eval-print loop, and after evaluating a form given
4932 as an "--eval" command-line option. (These changes were motivated by a
4933 discussion of stream flushing issues on cmucl-imp in August 2000.)
4934 * The source transform for TYPEP of array types no longer assumes
4935 that an array whose element type is a not-yet-defined type
4936 is implemented as an array of T, but instead punts, so that the
4937 type will be interpreted at runtime.
4938 * There is now some support for cross-compiling in make.sh: each of
4939 the phases of make.sh has its own script. (This should be transparent
4940 to people doing ordinary, non-cross-compile builds.)
4941 * Since my laptop doesn't have hundreds of megabytes of memory like
4942 my desktop machine, I became more motivated to do some items on
4943 my to-do list in order to reduce the size of the system a little:
4944 ** Arrange for various needed-only-at-cold-init things to be
4945 uninterned after cold init. To support this, those things have
4946 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4947 symbols with such names are now uninterned after cold init).
4948 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4949 fasl files for cold load.
4950 ** Remove the old compiler structure pooling code (which used to
4951 be conditional on the target feature :SB-ALLOC) completely.
4952 ** Redo the representation of some data in cold init to be more compact.
4953 (I also looked into supporting byte compiled code at bootstrap time,
4954 which would probably reduce the size of the system a lot, but that
4955 looked too complicated, so I punted for now.)
4956 * The maximum signal nesting depth in the src/runtime/ support code has
4957 been reduced from 4096 to 256. (I don't know any reason for the very
4958 large old value. If the new smaller value turns out to break something,
4959 I'll probably just bump it back up.)
4960 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4962 * Many, many bugs reported by Peter Van Eynde have been added to
4963 the BUGS list; some have even been fixed.
4964 * While enabling dynamic object file loading, I tried to make the
4965 code easier to understand, renaming various functions and variables
4966 with less ambiguous names, and changing some function calling
4967 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4968 * While trying to figure out how to do the OpenBSD port, I tried to
4969 clean up some of the code in src/runtime/. In particular, I dropped
4970 support for non-POSIX signal handling, added various comments,
4971 tweaked the code to reduce the number of compilation warnings, and
4972 renamed some files to increase consistency.
4973 * To support the new automatic configuration functionality in make.sh,
4974 the source file target-features.lisp-expr has been replaced with the
4975 source file base-target-features.lisp-expr and the machine-generated
4976 file local-target-features.lisp-expr.
4977 * fixed a stupid quoting error in make.sh so that using CMU CL
4978 "lisp -batch" as cross-compilation host works again
4980 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4982 * DESCRIBE no longer tries to call itself recursively to describe
4983 bound/fbound values, so that it no longer fails on symbols which are
4984 bound to themselves (like keywords, T, and NIL).
4985 * DESCRIBE now works on generic functions.
4986 * The printer now prints less-screwed-up representations of closures
4987 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4988 * A private symbol is used instead of the :EMPTY keyword previously
4989 used to mark empty slots in hash tables. Thus
4990 (DEFVAR *HT* (MAKE-HASH-TABLE))
4991 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4992 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4993 now does what ANSI says that it should. (You can still get
4994 similar noncompliant behavior if bang on the hash table
4995 implementation with all the symbols you get back from
4996 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4997 This breaks binary compatibility, since tests for equality to
4998 :EMPTY are wired into things like the macroexpansion of
4999 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5001 * There's now a minimal placeholder implementation for CL:STEP,
5002 as required by ANSI.
5003 * An obscure bug in the interaction of the normal compiler, the byte
5004 compiler, inlining, and structure predicates has been patched
5005 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5006 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5008 * Missing ordinary arguments in a macro call are now detected even
5009 when the macro lambda list contains &KEY or &REST.
5010 * The debugger no longer complains about encountering the top of the
5011 stack when you type "FRAME 0" to explicitly instruct it to go to
5012 the top of the stack. And it now prints the frame you request even
5013 if it's the current frame (instead of saying "You are here.").
5014 * As specified by ANSI, the system now always prints keywords
5015 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5017 * The default initial SIZE of HASH-TABLEs is now smaller.
5018 * Type information from CLOS class dispatch is now propagated
5019 into DEFMETHOD bodies, so that e.g.
5020 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5022 is now basically equivalent to
5023 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5024 (DECLARE (TYPE SINGLE-FLOAT X))
5026 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5027 operation, without having to do run-time type dispatch.
5028 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5029 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5030 * Since I don't seem to be making big file reorganizations very often
5031 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5032 is overflowing my ability to conveniently back them up), I've finally
5033 checked the system into CVS. (The CVS repository is on my home system,
5034 not at SourceForge -- putting it on SourceForge might come later.)
5035 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5036 high-level GC-NOTIFY-FOO functions send their output. (There's
5037 still very little control of where low-level verbose GC functions
5038 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5039 less than it used to -- the GC-NOTIFY-FOO functions are now under
5040 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5041 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5042 in only one place in the source code, and propagates it automatically
5043 everywhere that it's needed. Thus e.g. when I bump the version from
5044 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5045 * The C source files now include boilerplate legalese and documentation
5046 at the head of each file (just as the Lisp source files already did).
5047 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5048 to his page will be replaced with a link to his new CLiki service.
5050 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5052 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5053 * The build process now looks for GNU make under the default name "gmake",
5054 instead of "make" as it used to. If GNU make is not available as "gmake"
5055 on your system, you can change this default behavior by setting the
5056 GNUMAKE environment variable.
5057 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5058 can build without error under CMU CL.
5060 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5062 * There is now a partial SBCL user manual (with some new text and some
5063 text cribbed from the CMU CL manual).
5064 * The beginnings of a profiler have been added (starting with the
5065 CMU CL profiler and simplifying and cleaning up). Eventually the
5066 main interface should be through the TRACE macro, but for now,
5067 it's still accessed through vaguely CMU-CL-style functions and macros
5068 exported from the package SB-PROFILE.
5069 * Some problems left over from porting CMU CL to the new
5070 cross-compilation bootstrap process have been cleaned up:
5071 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5072 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5073 part when getting rid of the compiler *BACKEND* stuff.)
5074 ** The value of *NULL-TYPE* was screwed up, because it was
5075 being initialized before the type system knew the final
5076 definition of the 'NULL type. This screwed up several key
5077 optimizations in the compiler, causing inefficiency in all sorts
5078 of places. (I found it because I wanted to understand why
5079 GET-INTERNAL-RUN-TIME was consing.)
5080 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5081 PROCLAIM FTYPE information. Unfortunately this broke binary
5082 compatibility again, since now the forms output by DEFGENERIC
5083 to refer to functions which didn't exist in 0.6.3.
5084 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5085 can use the new (as of 0.6.3) transform for SOME into MAP into
5087 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5088 values to (INTEGER 0 1000000), so that the time code will no longer
5089 occasionally get blown up by Linux returning 1000000 microseconds
5090 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5091 its output conform to the ANSI spec. (Alas, this makes its output
5092 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5093 * A full call to MAP NIL with a single sequence argument no longer conses.
5094 * fixes to problems pointed out by Martin Atzmueller:
5095 * The manual page no longer talks about multiprocessing as though
5096 it were currently supported.
5097 * The ILISP support patches have been removed from the distribution,
5098 because as of version 5.10.1, ILISP now supports SBCL without us
5099 having to maintain patches.
5100 * added a modified version of Raymond Toy's recent CMU CL patch for
5101 EQUALP comparison of HASH-TABLE
5103 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5105 * The system still can't cross-compile itself with
5106 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5107 entails), but at least it can compile more of itself that way
5108 than it used to be able to, and various buglets which were uncovered
5109 by trying to cross-compile itself that way have now been fixed.
5110 * This release breaks binary compatibility again. This time
5111 at least I've incremented the FASL file format version to 2, so that the
5112 problem can be detected reliably instead of just causing weird errors.
5113 * various new style warnings:
5114 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5115 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5116 ** using the lexical binding of a variable named in the *FOO* style
5117 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5118 as specified by ANSI.
5119 * *RANDOM-STATE* is no longer automatically initialized from
5120 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5121 default behavior of the system is to repeat its behavior every time
5122 it's run. If you'd like to change this behavior, you can always
5123 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5124 old convention there was no comparably easy way to get the system to
5125 repeat its behavior every time it was run.
5126 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5127 FTYPE declarations has been removed, in favor of their ANSI
5128 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5129 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5130 the types of their sequence arguments can be determined at compile time.
5131 This is done through a new open code expansion for MAP which eliminates
5132 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5133 argument types can be determined at compile time.
5134 * The optimizer now transforms COERCE into an identity operation when it
5135 can prove that the coerced object is already of the correct type. (This
5136 can be a win for machine generated code, including the output of other
5137 optimization transforms, such as the MAP transform above.)
5138 * Credit information has been moved from source file headers into CREDITS.
5139 * Source file headers have been made more standard.
5140 * The CASE macro now compiles without complaining even when it has
5143 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5145 * (Note that the way that the PCL macroexpansions were rewritten
5146 to accommodate the change in DEFGENERIC below breaks binary
5147 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5148 not run under sbcl-0.6.2. Once we get out of alpha releases,
5149 i.e. hit release 1.0.0, we'll probably try to maintain binary
5150 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5151 and sbcl-1.4.4. Until then, however, it might be fairly common
5152 for maintenance releases to break binary compatibility.)
5153 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5155 * The reporting of unhandled signals has been changed to print some
5156 explanatory text as well as the report form. (Previously only
5157 the report form was printed.)
5158 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5159 it defines, so that the compiler no longer issues undefined function
5160 warnings for compiled-but-not-yet-loaded generic functions.
5161 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5162 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5163 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5164 section of the ANSI spec are supported.
5165 * The "" nickname for the "KEYWORD" package has been removed.
5166 The reader still handles symbol tokens which begin with a package marker
5167 as keywords, but it doesn't expose its mechanism for doing so in the
5168 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5169 * The system now issues STYLE-WARNINGs for contradictory TYPE
5170 proclamations. (Warnings for contradictory FTYPE proclamations would
5171 be nice too, but those can't be done usefully unless the type system
5172 is made smarter about FUNCTION types.)
5173 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5174 systematized, so that "*target-*.lisp is supposed to exist only on the
5175 target and imply that there's a related file which exists on the
5176 host, and *host-*.lisp is supposed to exist only on the host and imply
5177 that there's a related file which exists on the target. This involves a
5178 lot of renaming. Hopefully the acute confusion caused by the renaming
5179 will be justified by the reduction in chronic confusion..
5180 ** runtime-type.lisp -> early-target-type.lisp
5181 ** target-type.lisp -> late-target-type.lisp
5182 ** early-host-format.lisp -> early-format.lisp
5183 ** late-host-format.lisp -> late-format.lisp
5184 ** host-error.lisp -> misc-error.lisp
5185 ** early-error.lisp -> early-target-error.lisp
5186 ** late-error.lisp -> late-target-error.lisp
5187 ** host-defboot.lisp -> early-defboot.lisp
5188 ** code/misc.lisp -> code/target-misc.lisp
5189 ** code/host-misc.lisp -> code/misc.lisp
5190 ** code/numbers.lisp -> code/target-numbers.lisp
5191 ** code/early-numbers.lisp -> numbers.lisp
5192 ** early-host-type.lisp -> early-type.lisp
5193 ** late-host-type.lisp -> late-type.lisp
5194 ** host-typep.lisp -> typep.lisp
5195 ** load.lisp -> target-load.lisp
5196 ** host-load.lisp -> load.lisp
5197 ** host-disassem.lisp -> disassem.lisp
5198 ** host-insts.lisp -> insts.lisp
5199 ** byte-comp.lisp -> target-byte-comp.lisp
5200 ** host-byte-comp.lisp -> byte-comp.lisp
5201 ** host-signal.lisp -> signal.lisp
5202 ** host-defstruct.lisp -> defstruct.lisp
5203 ** late-target-type.lisp -> deftypes-for-target.lisp
5204 Furthermore, several other previously target-only files foo.lisp (e.g.
5205 hash-table.lisp and random.lisp) have been split into a target-and-host
5206 foo.lisp file and a target-only target-foo.lisp file, with their key type
5207 definitions in the target-and-host part, so that the cross-compiler will
5208 know more about target types.
5209 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5210 gone away. In their place are various *BACKEND-FOO* variables
5211 corresponding to the slots of the old structure.
5212 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5213 into the target SBCL has been fixed.
5214 * The chill.lisp system for loading cold code into a running SBCL
5216 * Support for the CMU CL "scavenger hook" extension has been removed.
5217 (It was undocumented and unused in the CMU CL sources that SBCL was
5218 derived from, and stale in sbcl-0.6.1.)
5219 * Various errors in the cross-compiler type system were detected
5220 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5221 (enabling various consistency checks). Many of them were fixed,
5222 but some hard problems remain, so the compiler is back to
5223 running without *TYPE-SYSTEM-INITIALIZED* for now.
5224 * As part of the cross-compiler type system cleanup, I implemented
5225 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5226 * I have started adding UNCROSS calls throughout the type system
5227 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5228 on cross-compiler input files will be able to go away, and various
5230 * CONSTANTP now returns true for quoted forms (as explicitly required
5233 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5235 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5236 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5237 (MAKE-LIST -1). In the longer term, it ought to become true
5238 that declarations are assertions even at SAFETY 1. For now, it's not
5239 quite true even at SAFETY 3, but it's at least more nearly true..
5240 (Note that this change seems to increases the size of the system by
5241 O(5%) and to decrease the speed of the compiler by 20% or more.)
5242 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5243 for the problem of printing dozens of lines of distracting information
5244 about low-level system machinery as part of the top stack frame
5245 on entry to the debugger when an undefined function was called.
5246 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5247 is not reset to COMMON-LISP-USER.
5248 * Compilation of stuff related to dyncount.lisp has been made conditional
5249 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5250 smaller. The various dyncount-related symbols have been moved into
5251 a new "SB-DYNCOUNT" package.
5252 * tty-inspect.lisp has been renamed to inspect.lisp.
5253 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5254 feature has gone away. (When we eventually port to other flavors of
5255 libc and/or Unix, we'll try to make the differences between flavors
5256 invisible at the user level.)
5257 * Various other *FEATURES* tags, and/or their associated conditionals,
5258 have been removed if obsolescent, or given better documentation, or
5259 sometimes given more-mnemonic names.
5261 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5263 * tidied up "make.sh" script
5264 * tidied up system directory structure
5265 * better "clean.sh" behavior
5266 * added doc/FOR-CMUCL-DEVELOPERS
5267 * many many small tweaks to output format, e.g. removing possibly-confusing
5268 trailing #\. character in DESCRIBE-INSTANCE
5269 * (EQUALP #\A 'A) no longer signals an error.
5270 * new hashing code, including EQUALP hashing
5271 * tidied up Lisp initialization and toplevel
5272 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5273 * command line argument processing
5274 * added POSIX-GETENV function to deal with Unix-ish environment variables
5275 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5276 terminating SBCL on EOF
5277 * non-verbose GC by default
5278 * There is no more "sbcl" shell script; the sbcl file is now the C
5279 runtime executable (just like CMU CL).
5280 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5282 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5283 symbol and package information as Lisp native symbol and package objects
5284 instead of strings naming symbols and strings naming packages. This way,
5285 whenever packages are renamed (as in warm init), debug information is
5286 transformed along with everything else.
5287 * tweaked the optimization policy declarations which control the building
5288 of SBCL itself. Now, among other things, the system no longer saves
5289 source location debugging information. (This helps two problems at once
5290 by reducing SBCL size and by keeping SBCL from trying to look for its
5291 sources -- which may not exist -- when reporting errors.)
5292 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5293 debugging and testing purposes
5294 * cleaned up printing, making the printer call PRINT-OBJECT for
5295 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5296 methods, giving nearly-ANSI behavior
5297 * converted almost all special variables to use *FOO* naming convention
5298 * deleted PARSE-TIME functionality, since it can be done portably
5299 * moved some files out of cold init into warm init
5300 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5302 * regularized formatting of source files
5303 * added an install.sh script
5304 * fixed ridiculous memory usage of cross-compiler by making
5305 compiler/alloc.lisp not try to do pooling unless it can hook
5306 itself into the GC of the cross-compilation host. Now the system
5307 builds nicely on my old laptop.
5308 * added :SB-ALLOC in target-features.lisp-expr
5309 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5310 was not implemented)
5311 * re-did condition handling and note reporting in the compiler. Notes
5312 are no longer handled by signalling conditions. Style warnings
5313 and warnings are handled more correctly and reported in such a way
5314 that it's easy to find one or the other in your output (so that you
5315 can e.g. figure out which of many problems caused COMPILE-FILE to
5317 * changed the severity of several compiler warnings from full WARNING
5318 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5319 compiler note reporting so that it doesn't use the condition system
5320 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5321 COMPILE-FILE command)
5322 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5323 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5324 no longer supported, since their implementation was deeply intertwingled
5325 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5326 * removed bogus "support" for compiler macros named (SETF FOO), and
5327 removed the compiler macro for SETF INFO (but only after making a fool
5328 of myself on the cmucl-imp mailing list by posting a bogus patch for
5329 DEFINE-COMPILER-MACRO..)
5330 * Compiled files containing forms which have side effects on the Lisp
5331 reader (such as DEFPACKAGE forms) are now handled more correctly.
5332 (Compiler queuing of top level lambdas has been suppressed by setting
5333 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5334 * deleted various currently-unused source files, e.g. gengc.lisp. They
5335 may be added back at some point e.g. when porting to other architectures,
5336 but until they are it's distracting to distribute them and to try to
5338 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5339 there were so many of them they're just distractions, and UNCROSS is
5340 known to be able to handle the current sources
5341 * moved PROFILE functionality into TRACE, so that it will be clear
5342 how the wrapping and unwrapping of functions when you profile them
5343 interacts with the wrapping and unwrapping of functions when you
5344 trace them. (Actually, the functionality isn't there yet, but at least
5345 the interface specification is there. Hopefully, the functionality will
5346 arrive with some future maintenance release.)
5347 * removed host-oops.lisp
5348 * changed signature of QUIT function to allow UNIX-CODE argument
5349 * fixed READ-SEQUENCE bug
5350 * tweaked verbose GC output so that it looks more like the progress
5351 output that ANSI specifies for functions like LOAD
5352 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5353 * added <http://sbcl.sourceforge.com> to the banner information printed by