1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.31
3 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
4 correctly when starting from an executable core without saved runtime
5 options (reported by Faré Rideau, thanks to Zach Beane)
7 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
8 * improvement: stack allocation is should now be possible in all nested
9 inlining cases: failure to stack allocate when equivalent code is manually
10 open coded is now considered a bug.
11 * improvements related to Unicode:
12 ** the Unicode character database has been upgraded to the
13 Unicode 5.1 standard, giving names and properties to a number of new
14 characters, and providing a few extra characters with case
16 ** the system now recognizes and produces names for Unicode Hangul
18 ** the EBCDIC-US external-format is now supported for octet operations
19 (as well as for stream operations).
20 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
21 be used to output toplevel compile-time effects into a separate .CFASL
23 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
24 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
26 * optimization: TRUNCATE on known single- and double-floats is upto 25%
28 * optimization: division of floating point numbers by constants uses
29 multiplication by reciprocal when an exact reciprocal exists.
30 * optimization: multiplication of single- and double-floats floats by
31 constant two has been optimized.
32 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
33 sufficient type information is available. (thanks to Leslie Polzer)
34 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
35 known structure objects are as efficient as defstruct generated accessors.
36 * optimization: unused vector creation can now be optimized away.
37 * improvement: ASDF systems can now depends on SB-INTROSPECT.
38 * improvement: a STYLE-WARNING is signalled when a generic function
39 clobbers an earlier FTYPE proclamation.
40 * improvement: the compiler is able to track the effective type of
41 generic function across method addition and removal even in the
42 absence of an explicit DEFGENERIC.
43 * improvement: DESCRIBE now reports on symbols naming undefined
44 but assumed or declared function as well.
45 * improvement: recompilation of systems using SB-GROVEL now works
46 (thanks to Leslie Polzer)
47 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
48 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
50 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
51 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
52 well as user defined declaration names.
53 ** VARIABLE-INFORMATION is now aware of alien variables.
54 * improvement: improved address space layout on OpenBSD (thanks to Josh
56 * improvement: pretty-printing of various Lisp forms has been improved
57 (thanks to Tobias Rittweiler)
58 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
59 unused were deleted in safe code. (reported by John Fremlin)
60 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
62 * bug fix: some out-of-line array predicates were missing (reported by
64 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
66 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
67 (thanks to Larry D'Anna)
68 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
69 as well. (reported by Josh Elsasser)
70 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
71 leading to possible attempts to delete the same file twice. See docstring
72 on DELETE-FILE for details. (reported by John Fremlin)
73 * bug fix: DELETE-FILE once again deletes the file named by the pathname
74 designator argument, rather than its truename. (reported by Luis
76 * bug fix: the low-level debugger had 32-bit assumptions and was missing
77 information about some array types. (thanks to Luis Oliveira)
78 * bug fix: moderately complex combinations of inline expansions could
79 be miscompiled if the result was declared to be dynamic extent.
80 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
81 form (+ <variable> <integer>) were miscompiled under certain
83 * bug fix: in some cases no compiler note about failure to stack allocate
84 was emitted, even if the objects were in fact heap allocated.
85 * bug fix: minor violation of "otherwise inaccessible" rule for stack
86 allocation could cause objects users might reasonably expect to
87 be heap allocated to be stack allocated.
88 * bug fix: DESCRIBE signalled an error for generic functions under
89 certain circumstances. (thanks to Leslie Polzer)
90 * bug fix: Fixed spelling of an error message.
92 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
93 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
94 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
95 of SB-THREAD:THREAD-ERROR-THREAD.
96 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
97 * new feature: docstrings for local and anonymous functions are no longer
98 discarded. (thanks to Leslie Polzer)
99 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
100 values in other threads.
101 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
102 about object allocation.
103 * optimization: division of a real float by a complex float is implemented
104 with a specialised code sequence.
105 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
106 keywords is an order of magnitude faster.
107 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
108 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
109 methods, and similarly for non-standard metaclass classes as long as there
110 are no methods additional on MAKE-INSTANCE.
111 * optimization: more efficient type-checks for FIXNUMs when the value
112 is known to be a signed word on x86 and x86-64.
113 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
114 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
116 * optimization: compiler is smarter about delegating argument type checks to
118 * optimization: several character functions are now compiled somewhat more
119 efficiently. (reported by Lynn Quam)
120 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
121 * improvement: less unsafe constant folding in floating point arithmetic,
122 especially for mixed complex/real -float operations.
123 * optimization: constant double and single floats are stored in native
124 unboxed format on x86[-64].
125 * optimization: smarter code for arithmetic operations with constant floats,
126 complex floats, or integers on x86[-64].
127 * optimization: smarter code for conjugate/multiplication of float complexes
128 and abs/negate of floats on x86-64.
129 * optimization: more efficient complex float and real float operations on
131 * improvement: complex float division is slightly more stable.
132 * improvement: DESCRIBE output has been reworked to be easier to read and
133 contains more pertinent information.
134 * improvement: failure to provide requested stack allocation compiler notes
135 provided in all cases (requested stack allocation not happening without a
136 note being issued is now considered a bug.)
137 * bug fix: SB-POSIX exports the documented types and functions
138 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
139 types. (reported by "abhi")
140 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
141 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
142 (thanks to Paul Khuong)
143 * bug fix: looping around HANDLER-CASE could silently consume stack space
144 on each iteration. (reported by "foobar")
145 * bug fix: better error signalling when calls to functions seeking elements
146 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
147 (reported by Tobias Rittweiler)
148 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
149 directory components now works as it used to. (various prolems reported by
150 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
151 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
152 (reported by Elliot Slaughter, thanks to Stas Boukarev)
153 * bug fix: bogus undefined variable warnings from fopcompiled references to
154 global variables. (thanks to Lars Rune Nøstdal)
155 * bug fix: foreign function names should now appear in backtraces on
156 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
157 * bug fix: SETF compiler macro documentation strings are not discarded
159 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
160 (thanks to Alex Plotnick)
161 * bug fix: SLEEP accepts large integer arguments, truncating them to
162 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
163 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
164 * bug fix: compiler notes for expensive slot type checks could be emitted
165 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
167 changes in sbcl-1.0.29 relative to 1.0.28:
168 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
169 https://bugs.launchpad.net/sbcl
170 Bugs can be reported directly there, or by sending email to
171 sbcl-bugs@lists.sourceforge.net
172 (no subscription required.)
173 * minor incompatible change: under weak type checking policy integer
174 types are weakened less aggressively.
175 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
176 allowed to return, which causes SBCL to quit with exit status 0. Previously
177 if the function returned with a small integer return value, that value
178 was accidentally reused as the exit status.
179 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
180 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
181 :HASH-FUNCTION argument. Refer to user manual for details.
182 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
184 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
185 microseconds since the Unix epoch on all platforms.
186 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
187 allows the compiler to safely elide boundedness checks for special
189 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
190 the symbol, prohibits both lexical and dynamic binding. This is mainly an
191 efficiency measure for threaded platforms, but also valueable in
193 * new feature: UNC pathnames are now understood by the system on Windows.
194 * optimization: the compiler uses a specialized version of FILL when the
195 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
197 * optimization: accesses to potentially non-simple arrays where element type
198 is known are 50% faster.
199 * optimization: compiler now generates faster array typechecking code.
200 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
202 * optimization: multidimensional array accesses in the absence of type
203 information regarding array rank are approximately 10% faster due to
204 open coding of ARRAY-RANK.
205 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
206 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
208 * optimization: result of call to VECTOR can now be stack allocated.
209 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
210 as long as the resulting array is one-dimensional and has a known
211 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
212 length of the list matches the known length of the vector does not
213 allocate the list as an intermediate step. Ditto for VECTOR and simple
215 * optimization: MAKE-ARRAY can now stack allocate in the presence of
216 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
217 known element type, and is known to be simple and one dimensional.
218 * improvement: SBCL now emits a compiler note where stack allocation was
219 requested but could not be provided (not in all cases, unfortunately)
220 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
221 * improvement: pretty-printing loop has been implemented properly. (thanks
222 to Tobias Rittweiler)
223 * documentation: CLOS slot typechecing policy has been documented.
224 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
225 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
226 pointer, leading to memory faults. (thanks to Bart Botta)
227 * bug fix: better floating point exception handling on x86/OpenBSD.
228 (thanks to Josh Elsasser)
229 * bug fix: exit status from QUIT when called under --script was lost
230 (reported by Hubert Kauker)
231 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
232 same implementation of FILL to initialize the array, even if a more
233 efficient one was available (reported by Stas Boukarev, thanks to
235 * bug fix: potential miscompilation of array stack allocation on x86 and
236 x86-64. (reported by Time Tossavainen)
237 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
238 result in their subforms being treated as top level forms. (reported by
240 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
241 than a machine register could leave garbage in the high bits of the
242 result register (bug 316325).
243 * bug fix: disable address space randomization Linux/x86-64 as well,
244 not just x86-64. (reported by Ken Olum)
245 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
246 generate incorrect code.
247 * bug fix: #201; type inference for CONS and ARRAY types could derive
248 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
249 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
250 could not be assigned to or bound with PROGV. (reported by Lorenz
252 * bug fix: the value of CL:- in the inspector was the previous expression
253 evaluated rather than the expression being evaluated.
254 * bug fix: constants can no longer be locally declared special.
255 * bug fix: signals delivered to threads started from foreign land (read:
256 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
257 thread by blocking all signals and resignalling.
258 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
259 from :INITFORM, if any.
261 changes in sbcl-1.0.28 relative to 1.0.27:
262 * a number of bugs in cross-compilation have been fixed, with the ultimate
263 result that building under (at least) clisp should be much more reliable.
264 * minor incompatible changes: echo-streams now propagate unread-char to the
265 underlying input stream, and no longer permit unreading more than one
267 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
268 frames, allowing for instance more reliable backtraces.
269 * improvement: the debugger REPL can now reference lexical variables
270 by name directly for code compiled with (DEBUG 3).
271 * improvement: errors from malformed declarations now have better source
272 paths associated with them. (thanks to Tobias Rittweiler)
273 * optimization: faster local calls on x86/x86-64
274 * bug fix: some error messages for out-of-bound array indexes confused the
275 index and the bound. (thanks to Stas Boukarev)
276 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
278 * bug fix: running regressions tests in shells without OSTYPE set now works.
279 (reported by Harald Hanche-Olsen)
280 * bug fix: more robust static space exhaustion signalling from
281 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
282 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
283 docstring away instead of storing it under names such as (LAMBDA (X)).
284 (reported by Leslie Polzer)
285 * bug fix: timers could go off in the wrong order, be delayed indefinitely
286 (thanks to Ole Arndt for the patch)
287 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
288 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
289 potentially-invalid effective methods in its cache.
290 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
291 instances as well (thanks to Paul Khuong)
292 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
293 SB-POSIX:WAITPID and their C equivalents.
294 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
296 changes in sbcl-1.0.27 relative to 1.0.26:
297 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
298 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
299 * improvement: the system either recovers from stack exhaustion or dies
300 properly as opposed to leaving the user uncertain of whether the handler
301 trampled on some random memory next to the stack or having to rely on
302 --lose-on-corruption (which is still a good idea to use in production
303 because stack exhaustion can happen in signal handlers which will likely
305 * bug fix: fix gc related interrupt handling bug on ppc (regression from
306 1.0.25.37, reported by Harald Hanche-Olsen)
307 * bug fix: work around signal delivery bug in darwin (regression from
308 1.0.25.44, reported by Sidney Markowitz)
309 * bug fix: fix ERROR leaking memory (reported by David Thompson)
311 changes in sbcl-1.0.26 relative to 1.0.25:
312 * incompatible change: an interruption (be it a function passed to
313 INTERRUPT-THREAD or a timer function) runs in an environment where
314 interrupts can be enabled. The interruption can use
315 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
316 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
317 potentially running out of stack. Keep in mind that in the absence
318 of WITHOUT-INTERRUPTS some potentially blocking operation such as
319 acquiring a lock can enable interrupts.
320 * incompatible change: GC-OFF and GC-ON are removed, as they were
321 always unsafe. Use WITHOUT-GCING instead.
322 * new feature: runtime option --disable-ldb
323 * new feature: runtime option --lose-on-corruption to die at the
324 slightest hint of possibly non-recoverable errors: running out of
325 memory, stack, alien stack, binding stack, encountering a memory
326 fault, etc. In the absence of --lose-on-corruption a warning is
328 * enhancement: detect binding stack exhaustion
329 * enhancement: detect alien stack exhaustion on x86/x86-64
330 * improvement: generally more stable and reliable interrupt handling
331 * improvement: there is a per thread interruption queue,
332 interruptions are executed in order of arrival
333 * improvement: a repeating timer reschedules itself when the it has
334 finished, but expiration times are spaced equally. If an
335 expiration time is in the past it will trigger after a short grace
336 period that may give a chance to other things to run.
337 * optimization: slightly faster gc on multithreaded builds
338 * optimization: faster WITHOUT-GCING
339 * bug fix: when JOIN-THREAD signals an error, do it when not holding
340 important locks so that the debugger/handler doesn't produce
341 recursive errors or deadlock.
342 * bug fix: real-time signals are not used anymore, so no more
343 hanging when the system wide real-time signal queue gets full.
344 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
346 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
347 * bug fix: fix random memory faults related to interrupts on alpha
348 * bug fix: fix random memory faults related to interrupts on sparc
349 * bug fix: fix deadlocks related to starting threads
350 * bug fix: fix deadlines on locks on futex platforms
351 * bug fix: restore errno in signal handlers
352 * bug fix: fix deadlocks related to hash tables
353 * bug fix: fix deadlocks in pcl
355 changes in sbcl-1.0.25 relative to 1.0.24:
356 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
357 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
358 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
359 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
360 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
361 better name and does not return values so stale on multiprocessor systems.
362 Also, HOLDING-MUTEX-P was added for about the only sane usage of
364 * improvement: unithread builds keep track of MUTEX-VALUE.
365 * improvement: reading from a TWO-WAY-STREAM does not touch the output
366 stream anymore making it thread safe to have a concurrent reader and
367 a writer, for instance, in a pipe.
368 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
369 arguments, making compiler-macros for SETF-functions able to inspect
370 their constant arguments.
371 * improvement: COMPILE-FILE reports times with millisecond accuracy
372 (thanks to Luis Oliveira)
373 * optimization: CHAR-CODE type derivation has been improved, making
374 TYPEP elimination on subtypes of CHARACTER work better. (reported
375 by Tobias Rittweiler, patch by Paul Khuong)
376 * bug fix: setting alien structure fields of type struct by value now
377 computes the right offset for the memory copy.
378 * bug fix: compilation problem involving inlined calls to aliens with
379 result type VOID. (reported by Ken Olum)
380 * bug fix: #235a; sequential inline expasion in different policies no
381 longer reuses the functional from the previous expansion site.
382 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
383 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
384 * bug fix: named ENUMs in multiply-referenced alien record types no longer
385 cause an implied type redefinition. Regression from 1.0.21.29.
386 * bug fix: sign-extension of small signed return values now works with C
387 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
388 * improvements to the Windows port:
389 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
390 Westfold, thanks to Rudi Schlatte)
392 changes in sbcl-1.0.24 relative to 1.0.23:
393 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
394 vector of a multidimensional SIMPLE-ARRAY.
395 * new feature: the system now signals a continuable error if standard
396 readtable modification is attempted. (thanks to Tobias Rittweiler)
397 * new feature: DIRECTORY has been extended with a non-standard keyword
398 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
399 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
400 has been robustified and documented better. (thanks to Robert Goldman)
401 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
402 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
403 * tradeoff: constant FORMAT control strings are now compiled unless
404 SPACE > SPEED (previously only when SPEED > SPACE.)
405 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
407 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
409 * bug fix: lexical type declarations are now correctly reported by
410 SB-CLTL2. (reported by Larry D'Anna)
411 * bug fix: STRING-TO-OCTETS did not handle :START properly when
412 using UTF-8 as external format. (thanks to Luis Oliveira)
413 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
414 are signalled correctly. (thanks to Stas Boukarev)
415 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
416 designator. (thanks to Tobias Rittweiler)
417 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
418 designator, and returns T instead of the function. (thanks to
420 * bug fix: direct superclasses of STANDARD-CLASS and
421 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
422 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
423 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
424 when no class with the named slot yet exists no longer causes a
425 compile-time style-warning.
426 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
427 in safe code. (reported by Didier Verna)
428 * bug fix: #430; nested structure constructors can stack allocate.
429 * bug fix: on some 64-bit platforms dynamic space size was truncated
430 to #xffff0000 bytes. (reported by Benjamin Lambert)
431 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
432 REPL unusable. (reported by Daniel Herring)
433 * bug fix: return values of READ-SEQUENCE did not take :START into
434 account on file streams, regressions since 1.0.12.22. (reported by
435 Thomas Russ, patch by Paul Khuong)
436 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
437 method specializer used to confuse permuation vector optimization.
438 * bug fix: system inserted bogus implicit type declarations for local
439 special variables in DEFMETHOD bodies.
440 * bug fix: #354; duplicated frames in backtraces due to
441 non-tail-call-optimized XEPs to functions with return type NIL
443 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
444 initializes structure object slots according to DEFSTRUCT initforms,
445 and DEFSTRUCT forms :INCLUDEind structure classes defined using
446 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
447 (reported by Bruno Haible and Stephen Wilson)
448 * bug fix: #395; fill-pointer output streams used now support
449 element-type BASE-CHAR as well.
450 * bug fix: compiler error when attempting to derive return value of
451 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
453 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
455 * bug fix: Mac OS X binaries should now be portable between Leopard
458 changes in sbcl-1.0.23 relative to 1.0.22:
459 * enhancement: when disassembling method functions, disassembly
460 for the associated fast function is also produced.
461 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
463 * optimization: printing with *PRINT-PRETTY* true is now more
464 efficient as long as the object being printed doesn't require
465 special handling by the pretty printer.
466 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
467 now interact correctly with type declarations.
468 * partial bug fix: PCL detects infinite recursion during wrapper
469 validation. (thanks to Attila Lendvai)
470 * bug fix: #426; nested function calls are inlined properly.
471 Previously if FOO was an inline function, in calls of the form
472 (FOO (FOO ...)) the outer call was not inlined.
473 * bug fix: long long arguments passed in registers to alien
474 functions on PowerPC Linux and NetBSD are now handled correctly
475 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
477 changes in sbcl-1.0.22 relative to 1.0.21:
478 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
479 for the shared object in the current directory, but passes the native
480 namestring of the designated pathname to the operation system's shared
481 object loading function as-it.
482 * minor incompatible change: --disable-debugger toplevel option now takes
483 effect before processing of initialization files and --eval or --load
485 * new feature: new commandline argument: --script, which supports
486 shebang lines. See documentation for details. (based on work by
488 * new feature: SAVE-LISP-AND-DIE can save current values of
489 --dynamic-space-size and --control-stack-size in the executable core,
490 causing it to skip normal runtime option processing. See documentation
491 for details. (thanks to Zach Beane)
492 * enhancement: inoccous calls to EVAL or generic functions dispatching
493 on subclasses of eg. STREAM no longer cause compiler notes to appear.
494 * enhancement: the system no longer resignals errors from --load and
495 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
496 associated with the original error to be lost. (thanks to Ariel
498 * enhancement: :DONT-SAVE keyword argument has been added to
499 LOAD-SHARED-OBJECT for controlling interaction with
500 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
501 the effects of an earlier LOAD-SHARED-OBJECT call.
502 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
503 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
504 provided. (reported by Cedric St-Jean)
505 * bug fix: circularity handling in the reader did not treat raw
506 structure slots correctly. (reported by Cedric St-Jean)
507 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
508 file descriptors when there were none.
509 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
510 was broken. (reporteed by Willem Broekema)
511 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
512 pathnames without a directory.
513 * bug fix: COMPILE-FILE did not warn about undefined variable
514 references at toplevel, and LOAD of the resulting fasl did
516 * bug fix: functions with non-required arguments used to end up with
517 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
518 * bug fix: redefining a function with non-required arguments didn't
519 update the system's knowledge about its call signature properly.
520 * bug fix: fixed #431; incompatible alien record type redefinitions
521 are detected and handled. (reported by Neil Haven)
522 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
523 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
525 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
526 after alien stack frames.
527 * bug fix: strings passed to mk{s,d}temp lacked null termination
529 changes in sbcl-1.0.21 relative to 1.0.20:
530 * new feature: the compiler is able to track the effective type of a
531 generic function across method addition and removal.
532 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
533 appropriately typed structure slots without locking.
534 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
535 information like those gathered by TIME using a programming-friendly
537 * new feature: TIME reports time taken even if the form performs a
538 non-local transfer of control.
539 * enhancement: reduced conservativism on GENCGC platforms: on
540 average 45% less pages pinned (measured from SBCL self build).
541 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
542 mutate constant symbols or violate declaimed type of the symbol.
543 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
544 sleeping on the semaphore in heavily contested semaphores.
545 * bug fix: semaphores and condition variables were not interrupt
547 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
548 owned by other threads anymore.
549 * bug fix: FIND on lists called KEY outside the specified
550 subsequence. (reported by budden)
551 * bug fix: LOG doesn't use single-float intermediate results when
552 given mixed integer and double-float arguments, leading to better
553 precision. (reported by Bob Felts)
554 * bug fix: LOG with base zero returned values of inconsistent type.
556 changes in sbcl-1.0.20 relative to 1.0.19:
557 * minor incompatible change: OPTIMIZE qualities
558 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
559 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
560 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
561 * documentation: some slot access efficiency guidelines have been
562 added to the user manual.
563 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
564 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
565 as ASSOC and MEMEBER.
566 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
567 to more efficient EQ-comparison versions more often.
568 * optimization: enhanced derivation of DOLIST iteration variable type
570 * optimization: constant folding of simple (LIST ...) forms as DOLIST
572 * optimization: runtime lookup of function definitions can be
573 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
574 * optimization: compiler is able to derive the return type of
575 (AREF (THE STRING X) Y) as being CHARACTER.
576 * optimization: CLRHASH on empty hash-tables no longer does pointless
577 work. (thanks to Alec Berryman)
578 * optimization: REPLACE deftransforms don't punt when :START1 or
580 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
581 no longer emits a code deletion note. (reported by Andrew
583 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
584 functions with an odd number of &OPTIONAL arguments, a &REST
585 argument, and one or more &KEY arguments at the call site.
586 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
587 arguments appeared at call sites as well.
588 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
589 READ-LINE &co can no longer read from them afterwards. (reported
591 * bug fix: fixed #427: unused local aliens no longer cause compiler
592 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
594 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
595 alien-stack leakage. (reported by Andy Hefner)
596 * bug fix: PROGV signals an error when an attempt to violate declared
597 type of a variable or bind a constant is made.
598 * bug fix: SET signals an error when an attempt to violate declared
599 type of a variable is made.
600 * bug fix: restart computation during the execution of a restart
601 test function no longer causes infinite recursion. (reported by
603 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
604 signals an error. (thanks to Pierre Mai)
605 * bug fix: EXPORT left symbol unexported in conflict situations.
606 (thanks to Michael Weber)
607 * bug fix: correctly handle name conflicts involving CL:NIL.
608 (thanks to Michael Weber)
609 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
610 conflicts arising from USEing package with conflicting symbols
611 correctly. (thanks to Michael Weber)
613 changes in sbcl-1.0.19 relative to 1.0.18:
614 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
615 warnings that go otherwise unhandled will be muffled if they are
616 of the type that's the value of this variable.
617 * optimization: stack allocation is slightly more efficient on x86
619 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
620 where a raw slot always is initialized using the initform whose
621 type is not know sufficiently well a compile-time are now compiled
622 correctly. (reported by John Morrison)
623 * bug fix: compiler no longer makes erronous assumptions in the
624 presence of non-foldable SATISFIES types.
625 * bug fix: stack analysis missed cleanups of dynamic-extent
626 arguments in non-let-converted calls to local functions.
627 * improvements to the Windows port:
628 ** adjusted address spaces for building on both Win32 and
629 Win64. (thanks for John Connors)
630 * fixed some bugs revealed by Paul Dietz' test suite:
631 ** interval arithmetic during type derivation used inexact integer
632 to single-float coercions.
633 ** arithmetic operations involving large integers and single
634 floats give the same results in compiled and interpreted code.
635 ** deriving the result type of COERCE no longer signals an error
636 if the derived type of the second argument is a MEMBER type
637 containing invalid type specifiers.
638 ** ADJOIN with constant NIL as second argument works correctly.
639 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
641 changes in sbcl-1.0.18 relative to 1.0.17:
642 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
643 profiles only the current thread.
644 * minor incompatible change: changes to SYMBOL-VALUE of constants
645 defined with DEFCONSTANT now signal an error.
646 * enhancement: SB-SPROF now has support for wallclock profiling,
647 and is also able to profile specific threads. REPORT output
648 has also additional sorting options.
649 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
651 * optimization: structure allocation has been improved
652 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
653 ** out of line constructors are ~10% faster.
654 ** inline constructors are ~15% faster.
655 ** inline constructors are capable of dynamic extent allocation
656 (generally on x86 and x86-64, in some cases on other platforms
658 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
660 * optimization: file compiler is now able to coalesce non-circular
661 lists, non-base strings, and bit-vectors. Additionally, constants
662 are never referenced through SYMBOL-VALUE at runtime.
663 * optimization: code defining methods on PRINT-OBJECT (and other
664 generic functions in the COMMON-LISP package) now loads faster.
665 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
667 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
668 fasl is now deleted. (reported by Attila Lendvai)
669 * bug fix: READ-LINE always returned NIL for the last line in files.
670 (reported by Yoshinori Tahara)
671 * bug fix: more accurate disassembly annotations of foreign function
672 calls. (thanks to Andy Hefner)
673 * bug fix: trimming non-simple strings and non-string string
674 designators when the there is nothing to trim works properly.
675 (thanks to James Knight)
676 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
677 (thanks to Travis Cross)
678 * fixed some bugs revealed by Paul Dietz' test suite:
679 ** NIL is a valid function name (regression at 1.0.13.38)
680 ** FILL on lists was missing its return value (regression at 1.0.12.27)
681 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
682 fill pointers properly (regression at 1.0.12.23)
683 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
684 displacement indices properly (regression at 1.0.12.23)
686 changes in sbcl-1.0.17 relative to 1.0.16:
687 * temporary regression: user code can no longer allocate closure
688 variable storage on stack, due to bug 419 without explicitly
689 requesting it. Please consult sbcl-devel for advice if you need to
690 use this feature in the meanwhile.
691 * new feature: runtime argument --control-stack-size can be used to
692 adjust thread default control stack size.
693 * enhancement: improved TIME output
694 ** all times are reported using the measured accuracy (milliseconds
695 for real and GC times, microseconds for everything else.)
696 ** processor cycle counts on x86 and x86-64.
697 ** interpreted forms are counted for both evaluator modes.
698 ** number of lambdas converted by the compiler is reported.
699 ** CPU percentage report (computed from real and total run time.)
700 ** more comprehensive run time reporting, using a condenced format
701 ** interperted form, lambda, and page fault counts are omitted
703 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
705 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
706 * optimization: two argument forms of LAST are upto ~10% faster
707 in normal SPEED policies.
708 * optimization: NCONC no longer needs to heap cons its &REST list
709 in normal SPEED policies.
710 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
712 * bug fix: UNION and NUNION work with :TEST-NOT once more,
713 regression since 1.0.9.1. (thanks to Eric Marsden)
714 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
715 since 1.0.15.36. (thanks to Paul Khuong)
716 * bug fix: LAST when always returned the whole list when given a bignum
717 as the second argument.
718 * bug fix: dynamic extent allocation of nested lists and vectors
719 could leak to otherwise accessible parts.
720 * bug fix: invalid optimization of heap-allocated alien variable
722 * bug fix: fasl header checking is less vulnerable to different
723 platform word lengths.
724 * bug fix: more correct assembler syntax for GNU binutils
725 2.18.50.0.4 support. (thanks to Marijn Schouten)
726 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
728 * bug fix: the fopcompiler can handle LOCALLY forms (with no
729 declarations) successfully. (reported by Attila Lendvai)
731 changes in sbcl-1.0.16 relative to 1.0.15:
732 * minor incompatible change: revert the changes to sb-posix's error
733 signaling added in 1.0.14.
734 * minor incompatible change: change PROBE-FILE back to returning
735 NIL whenever we can't get a truename, as was the case before 1.0.14.
736 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
737 inherits from ERROR instead of just CONDITION.
738 * new feature: SB-INTROSPECT can provide source locations for instances
739 as well. (thanks to Tobias Rittweiler)
740 * optimization: binding special variables now generates smaller code
741 on threaded platforms.
742 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
743 and cases where no :TEST is given but the compiler can infer that
744 the element to search is of type (OR FIXNUM (NOT NUMBER)).
745 * optimization: better LOGNOT on fixnums.
746 * optimization: modular arithmetic for a particular requested width
747 is implemented using a tagged representation unless a better
748 representation is available.
749 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
750 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
751 for wellformedness and returns a specialized vector. (reported by
752 Francois-Rene Rideau)
753 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
754 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
755 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
756 unscheduling timer at the same time as another timer fires.
757 * bug fix: don't reschedule timers for dead threads.
758 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
759 * bug fix: copying output from RUN-PROGRAM to a stream signalled
760 bogus errors if select() was interrupted.
761 * enhancement: add support for fcntl's struct flock to SB-POSIX.
763 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
764 * enhancement: cleaner backtraces for interactive interrupts, as
765 well as other cases where the interesting frames used to be
766 obscured by interrupt handling frames.
767 * enhancement: untracing a whole package using (UNTRACE "FOO") is
768 now supported, and tracing a whole package using (TRACE "FOO") now
769 traces SETF-functions as well.
770 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
771 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
772 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
773 * unreadably printed representation of hash-tables now includes
775 * bug fix: partially fixed #188: type propagation from assignments
776 is now more efficient.
777 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
778 'DOUBLE-FLOAT) are not flushable.
779 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
780 full address of the object, and none of the tag bits.
781 * bug fix: readably printing hash-tables now respects other printer
782 control variables. (reported by Cedric St-Jean)
783 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
784 keyword with MAKE-HASH-TABLE.
785 * bug fix: export SB-POSIX:MKSTEMP.
786 * bug fix: SORT was not interrupt safe.
787 * bug fix: XREF accounts for the last node of each basic-block as
789 * bug fix: MAKE-INSTANCE optimizations interacted badly with
790 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
791 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
792 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
793 create obsolete instances in the case of redefinition or
794 obsoletion of a superclass. (thanks to Andy Hefner)
795 * bug fix: Support for the Alpha architecture has been revived; it had
796 suffered somewhat from lack of maintenance since sbcl-1.0.
797 * improvements to the Windows port:
798 ** The system detects the codepage to use at startup, instead of
799 using the value from the saved core. (thanks to Kei Suzuki)
801 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
802 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
803 (see documentation for details.)
804 * revived support for OpenBSD (contributed by Josh Elsasser)
805 * partially fixed bug #108: ROOM no longer suffers from occasional
806 (AVER (SAP= CURRENT END)) failures.
807 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
808 bodies no longer cause a WARNING to be signalled. (reported by
810 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
811 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
812 the bug in TRUNCATE.) (reported by Michael Weber)
813 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
814 no samples. (reported by Andy Hefner)
815 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
816 no longer appear as (NIL ...) frames in backtraces.
817 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
818 is now actually exported from SB-EXT as documented. (reported by
820 * bug fix: sb-aclrepl now correctly understands how to inspect
821 single-floats on 64-bit platforms where single-floats are not boxed.
822 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
823 yet been finalized. (reported by Levente Meszaros)
824 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
825 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
826 SBCL-specific optimize qualities.
828 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
829 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
830 an executable in the search path, and does so in the child
831 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
832 been removed; it can be found in the CVS history, for somebody who
833 needs that search behavior (see the manual).
834 * minor incompatible change: compiler policy re. weakening type
835 checks has changed: now type checks are weakened only if SAFETY < 2
837 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
838 unparsing of directory pathnames as files. Analogously,
839 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
840 filename to parse into a directory pathname.
841 * enhancement: implicit generic function creation now signals a
842 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
843 users can bind handlers for and muffle around calls to LOAD.
844 * enhancement: RUN-PROGRAM allows unicode arguments and environments
845 to be used (using the default stream external format), and allows
846 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
847 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
848 strings and vectors whose element-type or simplicity is not fully
849 known at compile-time.
850 * optimization: STRING-TRIM and related functions no longer allocate
851 a new string when no trimming needs to be performed. These functions
852 are also faster than before when the input string has been declared
854 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
855 * optimization: READ-LINE is significantly faster for files containing
857 * optimization: non-open coded uses of character comparison operators
858 (e.g. char=) no longer cons when called with more than one parameter
859 on platforms supporting dynamic-extent allocation.
860 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
861 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
862 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
864 * bug fix: some sequence functions elided bounds checking when
866 * bug fix: too liberal weakening of union-type checks when SPEED >
868 * bug fix: more bogus fixnum declarations in ROOM implementation
871 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
872 * new feature: MAKE-HASH-TABLE now experimentally accepts a
873 :SYNCHRONIZED argument, which makes the hash-table safe for
874 concurrent accesses (but not iteration.) See also:
875 SB-EXT:WITH-LOCKED-HASH-TABLE, and
876 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
877 * optimization: CONCATENATE on strings is an order of magnitude faster
878 in code compiled with (> SPEED SPACE).
879 * optimization: SUBSEQ is ~50% faster on lists.
880 * bug fix: bug 417 fixed -- source location reporting is now more robust.
881 * bug fix: SUBSEQ on a list will now correctly signal an error if if
882 END is smaller then START.
883 * bug fix: SB-PROFILE will no longer report extra consing for nested
884 calls to profiled functions.
885 * bug fix: ROOM implementation had bogus fixnum declarations which
886 could cause type-errors when calling ROOM on large images.
887 * bug fix: if file compilation is aborted, the partial fasl is now
888 deleted, and COMPILE-FILE returns NIL as the primary value.
889 * bug fix: number of thread safety issues relating to SBCL's internal
890 hash-table usage have been fixed.
891 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
892 be returned from its body when the values were being returned
893 using unknown-values return convection and the W-P-O was wrapped
894 inside an UNWIND-PROTECT.
895 * bug fix: sb-posix should now compile again under Windows, enabling
898 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
899 * incompatible change: hash-table accessor functions are no longer
900 automatically protected by locks. Concurrent accesses on the same hash-table
901 from multiple threads can give inconsistent results or even corrupt the
902 hash-table completely. Multi-threaded applications should do their own
903 locking at the correct granularity. In the current implementation it is
904 still safe to have multiple readers access the same table, but it's not
905 guaranteed that this property will be maintained in future releases.
906 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
907 and will signal an error at runtime.
908 * enhancement: SB-THREAD package now exports a semaphore interface.
909 * enhancement: CONS can now stack-allocate on x86 and
910 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
912 * enhancement: nested lists can now be stack allocated on
913 platforms providing stack allocation support.
914 * enhancement: dynamic-extent support has been extended to support
915 cases where there are multiple possible sources for the stack
917 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
918 if the mutex is uncontested on Linux.
919 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
920 as specified by the CLHS. (thanks to Tobias Rittweiler)
921 * bug fix: NaN comparison now works on x86-64.
922 * bug fix: CLOSE :ABORT T on a stream with pending output now
924 * bug fix: instances of non-standard metaclasses using standard
925 instance structure protocol sometimes missed the slot type checks
927 * bug fix: known functions can be inlined in high-debug code.
929 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
930 * minor incompatible change: the MSI installer on Windows no longer
931 associates .lisp and .fasl files with the installed SBCL.
932 * minor incompatible change: :UNIX is no longer present in *FEATURES*
933 on Windows. (thanks to Luis Oliviera)
934 * new feature: SB-CLTL2 contrib module now implements
935 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
936 * optimization: scavenging weak pointers is now more efficient,
937 requiring O(1) instead of O(N) per weak pointer to identify
938 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
939 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
940 method bodies using constant slot-names when the first argument is
941 a specializer parameter for the method.
942 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
943 names, when the class of the instance is a direct instance
944 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
945 as slow as the constant slot-name case.)
946 * optimization: member type construction is now O(N) instead
948 * optimization: UNION and NUNION are now O(N+M) for large
949 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
951 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
952 now more readable in environments like Slime which display it.
953 (thanks to Tobias C. Rittweiler)
954 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
955 was able to infer the correct argument type for the object on which
956 the CAS operation was being performed.
957 * bug fix: copy propagation interfered with parallel assignment
958 semantics in local calls. (reported by Paul Khuong)
959 * bug fix: the signed modular fixnum shift compiled to wrong code on
960 x86 and x86-64. (spotted by a slight modification to some of
963 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
964 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
965 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
966 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
968 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
969 and generic function now print the object identity for anonymous
970 instances. (thanks to Attila Lendvai)
971 * enhancement: as an extension to MOP, SBCL now supports SETF of
972 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
973 (thanks to Attila Lendvai)
974 * enhancement: sb-cover has an alternate annotation mode which puts
975 the form annotations at the car of the form, instead of annotating
976 it completely. The benefit of this mode is that it shows better
977 which forms were instrumented by the compiler.
978 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
979 by printer control variables. (reported by Dan Corkill)
980 * bug fix: system leaked memory when delayed output was performed by
981 the OS in smaller chunks then expected. (thanks to David Smith)
982 * bug fix: system leaked memory when file streams were not closed
984 * bug fix: large objects written to slow streams that were modified
985 after the write could end up with the modified state written to
986 the underlying file descriptor.
987 * bug fix: multiple threads operating in parallel on the same stream
988 could cause buffer-overflows.
989 * bug fix: source location information is stored correctly
990 (broken since 1.0.6). This bug would generally show up as the
991 Slime debugger highlighting the wrong form when the sldb-show-source
993 * bug fix: Branch forms are again annotated as branches in the sb-cover
995 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
996 on x86-64. (reported by Gregory Vanuxem)
997 * bug fix: EQUALP could return wrong results for structures with raw
998 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
999 word). (reported by Vjacheslav Fyodorov)
1000 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1003 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1004 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1005 atomic compare-and-swap operations on threaded platforms.
1006 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1007 allows assigning a global minimum value to optimization qualities
1008 (overriding proclamations and declarations).
1009 * enhancement: closed over variables can be stack-allocated on x86
1011 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1013 * optimization: slot definition lookup is now O(1). This speeds up
1014 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1015 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1016 * optimization: ASSOC and MEMBER can now be open-coded for all
1017 combinations of keyword arguments when second argument is constant
1018 and SPEED >= SPACE. In other cases a specialized version is
1020 * bug fix: using obsoleted structure instances with TYPEP and
1021 generic functions now signals a sensible error.
1022 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1023 (reported by Kristoffer Kvello)
1024 * bug fix: backtrace construction is now more careful when making
1025 lisp-objects from pointers on the stack, to avoid creating bogus
1026 objects that can be seen by the GC.
1027 * bug fix: defaulting of values in contexts expecting more than 7
1028 variables now works on x86-64. (reported by Christopher Laux)
1029 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1031 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1032 as the property-list of a symbol.
1033 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1034 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1035 situations requested, are once again file-compileable. (reported
1038 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1039 * MOP improvement: support for user-defined subclasses of
1040 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1041 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1042 the expansion of DEFMETHOD, is responsible for generating a form
1043 which creates a list of specializers when evaluated. Additional
1044 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1045 debugging and introspective support.
1046 * minor incompatible change: the (unsupported) spinlock interface
1047 has changed: free spinlock now has the value NIL, and a held spinlock
1048 has the owning thread as its value.
1049 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1050 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1052 * enhancement: name of a socket-stream is now "a socket" instead of
1053 "a constant string".
1054 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1055 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1056 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1057 for generic functions. (Thanks to Tobias C. Rittweiler)
1058 * optimization: bignum printing speed has been improved by 20-40%
1059 (depending on the bignum size.)
1060 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1062 * bug fix: the cache used by the CLOS to store precomputed effective
1063 methods, slot offsets, and constant return values is now thread and
1065 * bug fix: generic function dispatch function updating is now thread
1066 and interrupt safe (in the sense that the known issues have been
1068 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1069 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1070 * bug fix: asdf systems with dependencies to the SB-POSIX or
1071 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1072 * bug fix: interrupt safety of applicable method computation has been
1075 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1076 * new contrib: sb-cover, an experimental code coverage tool, is included
1077 as a contrib module.
1078 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1079 significantly faster.
1080 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1081 produce more efficient code on x86-64 if the compiler can determine
1082 that (+ INDEX <constant>) does not require a bounds check and FOO
1083 has an element type at least 8 bits wide.
1084 * enhancement: a new, experimental synchronous timeout facility is
1085 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1086 * enhancement: when a symbol name conflict error arises, the
1087 conflicting symbols are always printed with a package prefix.
1088 (thanks to Kevin Reid)
1089 * enhancement: stepping is now once again supported on the SPARC and
1090 MIPS platforms. (It is also now more likely to work on CheneyGC
1092 * enhancement: sb-sprof can now also track and report accurate call
1094 * bug fixes: the treatment of non-standard subclasses of
1095 SB-MOP:SPECIALIZER is more correct.
1096 * incompatible change: PURIFY no longer copies the data from the
1097 dynamic space into the static and read-only spaces on platforms
1098 that use the generational garbage collector
1099 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1101 * bug fix: GC race condition occasionally resulting in crashes with
1102 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1104 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1106 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1107 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1108 * bug fix: an asynchronous interrupt could previously leave the
1109 system running with GC inhibited.
1110 * bug fix: a DECLARE form evaluated at top-level now causes an error
1111 rather than silently (or verbosely) returning NIL.
1112 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1113 result in a error being signalled due to source form lookup errors.
1114 (reported by Peter Graves)
1116 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1117 * incompatible change: removed writer methods for host-ent-name,
1118 host-ent-addresses -- changing the values did not update the DNS
1120 * minor incompatible change: changed experimental JOIN-THREAD interface
1121 * documentation: the manual now lists reader and writer methods
1122 in class slot documentation sections. (thanks to Richard M Kreuter)
1123 * documentation: unwinding from asyncronous events has been
1124 documented as unsafe.
1125 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1126 in multithreaded application code.
1127 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1128 platforms. (thanks to James Anderson for the optimization hint)
1129 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1131 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1132 variants no longer cons.
1133 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1134 their NOT- variants no longer cons.
1135 * optimization: EQUAL hash tables no longer use SXHASH for objects
1136 of all data types, but instead use an EQL hash for types for which
1137 EQUAL is the same as EQL.
1138 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1139 are significantly faster.
1140 * optimization: new STRING-OUTPUT-STREAM implementation is much
1141 faster for large outputs and conses 30% less on average.
1142 * enhancement: XREF information is now collected for references made
1143 to global variables using SYMBOL-VALUE and a constant argument.
1144 * enhancement: SIGINT now causes a specific condition
1145 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1146 * bug fix: FILE-POSITION used to signal an error in some cases where
1147 ANSI requires it to return NIL.
1148 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1149 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1150 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1152 * bug fix: bad type declaration in the CLOS implementation has
1153 been fixed. (reported by James Anderson)
1154 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1155 (thanks to Lutz Euler)
1156 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1157 required by the CLHS. (reported by Samium Gromoff)
1158 * bug fix: dead unbound variable references now signal an error.
1159 (reported by Marco Monteiro)
1160 * bug fix: / with an unused value was being deleted in safe code.
1161 (thanks to Marco Monteiro and Kevin Reid)
1162 * bug fix: number of characters that can be written onto a single
1163 line in a file is unlimited.
1164 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1165 been fixed by inhibiting interrupts for when GC is disabled.
1166 * bug fix: some interrupt safety issues with GETHASH, (SETF
1167 GETHASH), CLRHASH and REMHASH have been fixed.
1168 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1169 specifier no longer causes infinite recursion.
1170 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1171 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1172 * bug fix: an &environment argument with the correct variable information
1173 is passed to macros that are expanded during byte compilation.
1174 (reported by Samium Gromoff)
1175 * bug fix: a logic error was causing the hash function for bignums to
1176 have excessive amounts of collisions. (reported by Faré Rideau)
1177 * bug fix: modifying the contents of an array could change the return
1178 value of SXHASH on that array, which is only allowed for strings
1179 and bit vectors. (bug introduced in 0.9.16)
1180 * improvement: the x86-64/darwin port now passes all tests (except
1181 for the debugger tests) but should still be considered
1182 experimental until this is fixed.
1183 * improvement: a style-warning is signaled for CASE (etc) clauses with
1184 duplicate keys. (thanks to Kevin Reid)
1185 * improvement: macos/x86 and macos/x86-64 now use mach exception
1186 handlers for dealing with illegal instructions (for trapping and
1187 error handling) and memory protection violations (for GC).
1189 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1190 * new platform: experimental support for x86-64/darwin (MacOS).
1191 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1192 and getnameinfo sockets functions are used instead of gethostbyaddr
1193 and gethostbyname, on platforms where the newer functions are available.
1194 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1196 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1197 don't print the startup banner, but behave as if --noinform was passed
1198 as a command line argument. (thanks to Kevin Reid)
1199 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1200 * optimization: code using alien values with undeclared types is much faster.
1201 * optimization: the compiler is now able to open code SEARCH in more cases.
1202 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1203 * bug fix: using standardized COMMON-LISP special variables as loop
1204 variables no longer signals bogus package lock violations. (reported
1206 * bug fix: declaring local loop variables to be of a range-limited type
1207 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1208 (reported by Andras Simon)
1209 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1210 bugs remain on x86-64.)
1211 * bug fix: the #= and ## reader macros now interact reasonably with
1212 funcallable instances.
1213 * bug fix: type-checks for function arguments were compiled using the
1214 compiler policy settings of the wrong lexical environment (in 1.0.2
1216 * bug fix: SHADOW accepts characters as string designators, as required
1217 by the spec (thanks to Eric Marsden)
1218 * bug fix: fixed GC safety issues when foreign functions are called with
1219 non-base strings as arguments
1220 * bug fix: more consistent error output for fatal-compiler-warnings, like
1222 * bug fix: functions with proper names were showing up as NIL in
1223 backtraces (reported by Edi Weitz, regression in 1.0.2)
1225 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1226 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1227 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1228 produce more efficient code on the x86 if the compiler can determine
1229 that (+ INDEX <constant>) does not require a bounds check and FOO
1230 has an element type at least 8 bits wide.
1231 * bug fix: references to undefined variables are handled the same way
1232 in toplevel forms as in the normal compiler
1233 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1235 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1236 (thanks to Jon Buller)
1237 * improvement: faster compilation times for complex functions
1238 * improvement: added readlink support to SB-POSIX (thanks to Richard
1241 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1242 * improvement: experimental support for mach exception handling on
1243 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1245 * improvement: support for GBK external format.
1246 (thanks to Chun Tian (binghe))
1247 * improvement: the debugger now displays variables that have been closed
1248 over, in code compiled with (DEBUG 2) or higher
1249 * improvement: support for executable cores on NetBSD (thanks to
1251 * new feature: added a RESTART-FRAME debugger command
1252 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1253 be used to provide an implementation for FILE-POSITION on Gray streams
1254 (thanks to Eric Marsden)
1255 * new feature: add syslog, openlog and closelog support to SB-POSIX
1256 (thanks to Richard Kreuter)
1257 * optimization: the function call overhead in code compiled with
1258 a high DEBUG optimization setting is significantly
1259 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1260 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1261 (thanks to Tony Martinez)
1262 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1263 evaluated once (reported by Kevin Reid)
1264 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1265 works again (thanks to Kilian Sprotte)
1266 * bug fix: an error is signaled for tagbodies with duplicate tags
1267 (thanks to Stephen Wilson)
1268 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1269 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1270 stack frames from alien callbacks.
1271 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1272 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1273 65k pages (thanks to David Woodhouse)
1274 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1276 changes in sbcl-1.0.1 relative to sbcl-1.0:
1277 * new platform: FreeBSD/x86-64, including support for threading.
1278 * new feature: the compiler stores cross-referencing information
1279 about function calls (who-calls), macroexpansion (who-macroexpands)
1280 and special variables (who-binds, who-sets, who-references) for code
1281 compiled with (< SPACE 3). This information is available through the
1282 sb-introspect contrib.
1283 * new feature: users may subclass SEQUENCE, and have instances of
1284 these classes interoperate with standard Common Lisp functions if
1285 a number of methods are defined. (This feature is experimental
1286 and the interface subject to change based on feedback from SBCL
1287 users and the general community)
1288 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1289 x86/x86-64, rather than the previous fixed depth of 8
1290 * improvement: another pthread back-end of mutex "pthread-futex".
1291 * bug fix: non-ascii command-line arguments are processed correctly
1292 (thanks to Yaroslav Kavenchuk)
1293 * bug fix: non-required arguments were not passed correctly when a method
1294 defined using DEFMETHOD was called from a mop-generated method using
1295 CALL-NEXT-METHOD (reported by Pascal Costanza)
1296 * bug fix: recursion is now permitted in accessors through
1297 SLOT-UNBOUND. (reported by Pascal Costanza)
1298 * bug fix: an error was signaled at startup if the HOME environment
1299 variable was defined, but had an empty value (reported by Peter Van Eynde)
1300 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1301 signal a PROGRAM-ERROR, not a BUG.
1302 * bug fix: SB-POSIX:READDIR works when built with large file support.
1303 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1305 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1306 for better automatic indentation support. (thanks to Matt Pillsbury)
1307 * optimization: loading generic functions no longer takes O(n^2) time,
1308 proportional to the amount of methods in the generic function
1309 (reported by Todd Sabin and Jeremy Brown)
1310 * optimization: the FIND and POSITION family of sequence functions
1311 are significantly faster on arrays whose element types have been
1313 * improvements to the Windows port:
1314 ** Intermittent heap corruption problems have been fixed. (thanks
1315 to Alastair Bridgewater)
1316 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1318 ** Lisp is able to unwind foreign exception frames from alien
1319 callbacks. (thanks to Alastair Bridgewater)
1321 changes in sbcl-1.0 relative to sbcl-0.9.18:
1322 * improvement: experimental support for threading on FreeBSD/x86.
1323 (thanks to NIIMI Satoshi)
1324 * improvement: runtime option --dynamic-space-size can be used
1325 to set the size of the dynamic space reserved on startup.
1326 * improvement: floating point modes in effect are now saved in
1327 core, and restored on startup.
1328 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1329 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1330 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1331 threads are not running after *SAVE-HOOKS* have run.
1332 * improvement: writes to CLOS instance slots are type-checked in code
1333 compiled with (SAFETY 3)
1334 * improvement: floating-point exception handling on FreeBSD (thanks to
1336 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1337 (thanks to Zach Beane)
1338 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1340 * improvement: added support for the Shift-JIS external format.
1341 (contributed by NIIMI Satoshi)
1342 * improvement: callbacks are supported on Linux/PPC. (thanks to
1344 * bug fix: compiler bug triggered by a (non-standard) VALUES
1345 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1346 * bug fix: file compiler no longer confuses validated and already
1347 dumped structurres. (reported by Kaersten Poeck)
1348 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1349 fill-pointer signals a type-error as required. (thanks to
1351 * bug fix: disassemly of funcallable instances works.
1352 * bug fix: single stepping on PPC.
1353 * bug fix: fix thread-safety problems in the type system (generally
1354 manifesting as nonsensical errors like "STRING is a bad type specifier
1355 for sequences" or "The value 1 is not of type FIXNUM")
1356 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1357 (reported by Josip Gracin)
1358 * bug fix: an error is signaled for attempts to displace arrays with
1359 incompatible element types (thanks to Mario Mommer)
1360 * bug fix: more correct handling of wide characters in debug info
1361 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1362 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1363 and don't cause extra consing
1364 * optimization: MAP and MAP-INTO are significantly faster on vectors
1365 whose elements types have been declared.
1366 * Improvements to SB-SPROF:
1367 ** Support for allocation profiling
1368 ** Reduced profiling overhead, especially for long profiling runs
1369 * Improvements to the Windows port:
1370 ** floating point exceptions are now reported correctly.
1371 ** stack exhaustion detection works partially.
1372 ** more accurate GET-INTERNAL-REAL-TIME.
1373 ** better RUN-PROGRAM behaviour in case of errors in the child
1375 ** PROBE-FILE now simplifies pathnames correctly.
1376 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1377 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1378 1st 1970 (although time timezone data will be unreliable).
1379 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1381 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1382 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1383 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1385 * bug fix: two potential GC deadlocks affecting threaded builds.
1386 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1387 returns T (reported by Anton Kazennikov)
1388 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1389 with non-variable places
1390 * bug fix: remove a race condition in the setting of
1391 funcallable-instance functions, this should make threaded CLOS
1392 code more stable against memory faults.
1393 * bug fix: corruption of specials when unbinding is interrupted by an
1394 asynchronous unwind (reported by Hannu Koivisto)
1395 * improvement: the debugger will now also display local variables that
1396 are only used once, for code compiled with a DEBUG optimization quality
1399 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1400 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1401 * incompatible change: External-format support for FFI calls. The
1402 SB-ALIEN:C-STRING no longer implies an ASCII
1403 external-format. Instead the string is subject to external-format
1404 conversion. Additionally return values of type SB-ALIEN:C-STRING
1405 are by default of type (SIMPLE-ARRAY CHARACTER), not
1406 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1407 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1408 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1409 * incompatible change: SB-EXT package no longer contains the
1410 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1411 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1413 * incompatible change: the single-stepper is no longer available
1414 on Alpha, Mips and Sparc platforms.
1415 * minor incompatible change: the direct superclasses of
1416 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1417 not (STANDARD-OBJECT FUNCTION). This makes the
1418 class-precedence-lists of GENERIC-FUNCTION and
1419 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1421 * minor incompatible change: the default stream external format on
1422 non-unicode SBCL is no longer detected from the locale, but is always
1424 * new feature: Add a version of evaluator that uses an interpreter instead
1425 of the compiler. EVAL still uses the compiler by default, to switch it
1426 to use the interpreter, set the value of the variable
1427 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1428 * minor incompatible change: the single-stepper REPL has been merged
1429 with the normal debugger (see the "Stepping" heading of the debugger help
1430 for more details). The debugger command STEP will no longer switch
1431 to the single-stepper REPL.
1432 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1433 for a type now works.
1434 * bug fix: loading of default sysinit file works. (thanks to Leonid
1436 * bug fix: better detection of circularities in the file-compiler.
1437 (reported by Marco Monteiro)
1438 * bug fix: the CL pathname functions now work with files that have
1439 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1440 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1441 systems with Unix98 pty semantics.
1442 * bug fix: ASDF-INSTALL will now work with bsd tar.
1443 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1445 * bug fix: timers expiring in dead threads no longer cause a
1446 type-error (reported by Paul "Nonny Mouse").
1447 * bug fix: thanks to more lightweight single-stepper instrumentation,
1448 code compiled with (DEBUG 3) will compile and execute significantly faster,
1449 and will have more accurate type-inferencing than before
1450 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1451 whose bindings are modified
1452 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1453 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1454 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1455 CL:SOFTWARE-VERSION with proper version
1457 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1458 * feature: implemented the READER-METHOD-CLASS and
1459 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1460 as specified by AMOP.
1461 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1463 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1464 (thanks to Lutz Euler)
1465 * optimization: hashing of general arrays and vectors has been
1466 improved. (reported by Any Fingerhut)
1467 * enhancement: SB-INTROSPECT is now able to find definitions of
1468 profiled functions. (thanks to Troels Henriksen)
1469 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1470 as well, allowing compiler-macros for SETF-functions to expand.
1471 * enhancement: step-instrumentation no longer wraps known
1472 single-value functions with multiple-value context, allowing
1473 better type inference.
1474 * fixed bug #337: use of MAKE-METHOD in method combination now works
1475 even in the presence of user-defined method classes. (reported by
1476 Bruno Haible and Pascal Costanza)
1477 * fixed bug #339(c): if there are applicable methods not part of any
1478 long-form method-combination group, call INVALID-METHOD-ERROR.
1479 (reported by Bruno Haible)
1480 * fixed bug #361: the :FUNCTION initarg in the protocol for
1481 initialization of methods can now be used to override
1482 internally-produced optimized functions. (reported by Bruno
1484 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1485 system-provided lambda expression no longer cause warnings about
1486 unbound #:|pv-table| symbols.
1487 * bug fix: improved the handling of type declarations and the
1488 detection of violations for keyword arguments with non-constant
1490 * bug fix: potentially erronous calls to PATHNAME and
1491 MERGE-PATHNAMES were being flushed in some cases.
1492 (reported by Richard Kreuter)
1493 * bug fix: compiled calls to TYPEP were mishandling obsolete
1494 instances. (reported by James Bielman and Attila Lendvai)
1495 * bug fix: format strings with ~> without matching ~< no longer
1496 trigger an AVER, but signal an understandable error instead.
1497 (reported by Antonio Martinez)
1498 * bug fix: specifying an output-file without a pathname-type for
1499 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1500 of input-file instead of "fasl". (reported by Robert Dodier)
1501 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1502 (reported by James Y Knight).
1503 * bug fix: compiler-macros-function did not consider the environment
1504 argument for shadowing by local functions.
1505 * bug fix: compiler-macros expansion was inhibited by local INLINE
1507 * bug fix: inline expansions of known functions were subject to
1508 step-instrumentation in high debug policies, leading to problems
1509 with type-inference.
1510 * bug fix: compiler failed to differentiate between different CONS
1511 types in some cases.
1512 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1513 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1514 * bug fix: #368: incorrect use of expressed vs. upgraded array
1516 * bug fix: #306a: more precise unions of array types.
1517 * thread-safety improvements:
1518 ** CONDITION-WAIT could return early on Linux, if the thread was
1519 interrupted and subsequently continued with SIGCONT.
1520 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1522 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1523 * added support for the ucs-2 external format. (contributed by Ivan
1525 * minor incompatible change: pretty printing of objects of type
1526 (cons symbol) is, in the default pprint-dispatch-table, now
1527 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1529 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1530 called later in a class's lifetime, possibly as late as when the
1531 first instance of the class is created. Previously,
1532 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1533 class became finalizeable.
1534 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1535 for multibyte external-format streams. (thanks to "vbzoli")
1536 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1537 with :ALLOCATION :CLASS inherited from superclasses of the
1539 * fixed bug: anonymous classes can now be created using the :NAME
1540 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1541 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1542 * fixed bug: core-files saved with :EXECUTABLE T can again be
1543 executed when SBCL_HOME isn't set. (reported by James Knight)
1544 * fixed bug: toplevel LOCALLY forms with declarations could
1545 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1546 * fixed bug: printing from several different threads using different
1547 values of *print-case* could cause invalid output, due to
1548 some internal special variables of the printer not being bound
1549 thread-locally (reported by Max Mikhanosha)
1550 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1551 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1552 (reported by Pascal Costanza)
1553 * fixed bug: FINALIZE-INHERITANCE is called from
1554 REINITIALIZE-INSTANCE on classes when the class has previously
1555 been finalized, as required by AMOP.
1556 * minor code generation optimizations:
1557 ** better register allocation in CLOS dispatching functions
1558 ** overflow detection when coercing signed bytes to fixnums on x86-64
1559 ** is now implemented with one IMUL instruction instead of three shifts
1560 ** more efficient bit-vector access on x86 and x86-64
1561 ** more efficient access to raw structure slots on x86 and x86-64
1562 * fixed some bugs revealed by Paul Dietz' test suite:
1563 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1564 return its argument.
1566 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1567 * feature: thread support on Solaris/x86, and experimental thread support
1569 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1571 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1572 default method for SLOT-UNBOUND.
1573 * minor incompatible change: prevent the user from specializing the
1574 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1575 somewhat counter to the intent of the protocol, I (CSR) think, and
1576 additionally it just doesn't work in SBCL as currently
1577 implemented, thanks to optimizations (that are always valid for
1578 the other three SLOT-VALUEish functions, but not for the setter).
1579 * minor incompatible change: the :SB-LDB feature is now enabled by
1580 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1581 the low-level debugger.
1582 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1583 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1584 down to an SB-SYS:FD-STREAM, allowing direct communication in
1585 more cases. Temporary files and pipes are still used as a fallback
1587 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1588 on the non-reentrant C functions localtime(3) and gmtime(3).
1589 * bug fix: global optimization policy was not visible in LOCALLY and
1591 * bug fix: class objects can be used as specializers in methods.
1592 (reported by Pascal Costanza)
1593 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1594 with a type error. (reported by blitz_ on #lisp)
1595 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1596 failed with a type error. (reported by Pascal Bourguignon)
1597 * bug fix: merging pathnames against defaults with :DIRECTORY
1598 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1599 (reported by James Y Knight)
1600 * bug fix: saving large (>2GB) cores on x86-64 now works
1601 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1602 constant index and a (simple-array (signed-byte 32)) array
1603 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1604 error (patch by Robert J. Macomber)
1605 * feature: TIME now displays the amount of run-time spent in GC
1606 * bug fix: The debugger now does a better job of respecting
1607 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1608 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1609 workaround for bug 403.)
1610 * bug fix: floating point exception handling now works on FreeBSD
1611 (thanks to NIIMI Satoshi)
1612 * fixed some bugs revealed by Paul Dietz' test suite:
1613 ** MISC.641: LET-conversion were not supposed to work in late
1615 * improvements to the Win32/x86 port:
1616 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1617 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1619 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1620 * new feature: source path information is generated for macro-expansion
1621 errors for use in IDE's like Slime (thanks to Helmut Eller)
1622 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1623 * bug fix: compiler does not loop forever on an invalid type in
1625 * improvement: compilation of most CLOS applications is significantly
1627 * optimization: added a limited bytecode compiler for simple toplevel
1628 forms, speeding up compilation and FASL loading
1629 * bug fix: the statistical profiler now properly distinguishes anonymous
1632 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1633 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1634 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1635 into subclasses of the finalized class. Now user calls to
1636 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1637 system return before any subclasses are finalized.
1638 * minor incompatible change: The reader no longer ignores errors
1639 regarding non-existent packages in #+ and #- feature tests.
1640 * new feature: command line options --no-sysinit, --no-userinit to
1641 inhibit loading the corresponding init files
1642 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1643 for sending data through UDP sockets (thanks to François-René Rideau)
1644 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1645 error is signalled instead (thanks to François-René Rideau)
1646 * minor incompatible change: Error signalling behaviour of lexical
1647 operations violating package locks has changed slightly. Refer to
1648 documentation on package locks for details.
1649 * enhancement: EVAL can process IF-expressions without resorting to the
1651 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1652 constant-folded properly due to missing out-of-line functions.
1653 (reported by Mika Pihlajamäki)
1654 * bug fix: LISTEN sometimes returned T even in cases where no data was
1655 immediately available from the stream
1656 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1657 were reversed. (reported by Levente Mészáros)
1658 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1659 when given a vector displaced to an adjustable array. (reported
1661 * bug fix: derivation of float boundaries from numbers outside the
1662 appropriate float range (reported by John Wiseman)
1663 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1665 * bug fix: precomputing cache entries for generic functions with
1666 some subclasses of specializers as yet invalid does not attempt to
1667 fill a cache line with a negative offset. (reported by Levente
1669 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1670 allow condition class objects as arguments to DOCUMENTATION and
1671 (SETF DOCUMENTATION); only find and set documentation for
1672 structure names for the STRUCTURE doc-type. (suggested by Gary
1674 * improvements to the Win32/x86 port:
1675 ** (user-homedir-pathname) and default initialization file
1676 locations now know about the user's "Documents and Settings"
1677 directory (thanks to Yaroslav Kavenchuk)
1678 ** run-program is implemented (thanks to Mike Thomas)
1679 ** sockets support (thanks to Timothy Ritchey)
1680 ** better backtrace support (thanks to Alastair Bridgewater)
1681 ** sb-grovel supported
1682 ** asdf-install and sb-posix work somewhat
1683 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1684 * improvements to the Solaris/x86 port:
1685 ** works on Solaris 11/Solaris Express
1686 ** floating-point exception handling support
1687 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1688 * fixed some bugs revealed by Paul Dietz' test suite:
1689 ** REMOVE-METHOD returns its generic function argument even when
1690 the method is not one of the generic functions' methods.
1691 ** objects declared as MEMBER types can be admissible arguments to
1692 structure accessors.
1693 ** printing characters should simply be printed by the FORMAT ~:C
1695 ** compiler failure when compiling functions with hairy constant
1696 defaults for optional parameters.
1697 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1698 function, which is already optimized.
1700 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1701 * new platform: experimental support for SBCL x86/Darwin, including
1702 MacOS X 10.4.5 on Intel.
1703 * new feature: Unicode character names are now known to the system
1704 (through CHAR-NAME and NAME-CHAR).
1705 * new feature: the filesystem location of SBCL's core file is
1706 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1707 * minor incompatible change: the contrib modules SB-POSIX and
1708 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1709 this change is to make it easier to distribute
1710 location-independent binaries.
1711 * bug fix: as implied by AMOP, standardized classes no longer have
1712 slots named by external symbols of public packages. (reported by
1714 * optimization: calling functions via constant symbols -- as in
1715 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1716 via the function object as in (FUNCALL #'FOO).
1717 * optimization: on x86 and x86-64, the calling convention for the
1718 case of dealing with an unknown number of values has been altered
1719 to be friendlier to the prediction heuristics implemented,
1720 particularly with reference to CALL and RET pairing. (thanks to
1721 Alastair Bridgewater)
1722 * optimization: on x86, the code for access to thread-local symbol
1723 values and binding/unbinding of thread-local symbols is smaller.
1724 (thanks to Alastair Bridgewater)
1725 * enhancement: CONSTANTP is now able to determine constantness of
1726 more complex forms, including calls to constant-foldable standardized
1727 functions and some special forms beyond QUOTE.
1728 * fixed bug: occasional GC crashes on Solaris/x86
1729 * optimization: x86-64 supports stack allocation of results of simple
1730 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1731 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1732 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1733 (thanks to James Knight)
1734 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1735 by the standard (thanks to Stephen Compall)
1737 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1738 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1739 be used for bundling the runtime and the core file into one
1740 executable binary. This feature is not currently supported on all SBCL
1741 platforms. (thanks to James Bielman and NIIMI Satoshi)
1742 * new feature: a generational or ephemeral garbage collector is now
1743 the default on the PowerPC platform (both Linux and Darwin). The
1744 old Cheney (stop and copy) collector is a build-time option.
1745 (thanks to Cyrus Harmon, after Raymond Toy)
1746 * minor incompatible change: the method by which SBCL finds its
1747 contributed modules has changed; it no longer relies on symbolic
1748 links from an $SBCL_HOME/systems directory, but searches directly
1749 in the subdirectories of $SBCL_HOME.
1750 * enhancement: the dynamic heap size on the Linux/PPC platform is
1751 markedly larger, even using the older Cheney garbage collector.
1752 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1753 certain complicated string types. (reported by Gary King)
1754 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1755 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1756 * fixed bug: DOCUMENTATION on structures no longer signals an
1757 error if no structure type of the right name exists. (reported by
1759 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1760 applicable non-standard primary or :AROUND method on
1761 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1762 no longer cause unbound variable errors. (reported by Kevin Reid)
1763 * fixed bug: metacircle resolution in cases where methods have slots
1764 added before the slots from STANDARD-METHOD. (reported by Jean
1766 * fixed bug: the Power PC assembly code for calling into lisp
1767 sometimes computed its return address wrongly (depending on the
1768 15th bit of the address, fixed at link time). This used to
1769 manifest itself in a segmentation violation while building PCL.
1770 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1771 many others over the years)
1772 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1773 the stack pointer (treated as a signed integer) is negative.
1774 (thanks to Peter van Eynde)
1776 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1777 * new platform: experimental support for the Windows operating
1778 system has been added. (thanks to Alastair Bridgewater)
1779 * fixed several bugs in and robustified the PPC FFI (including
1780 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1781 * bug fix: allow non-simple string symbol names (reported by Paul
1783 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1785 * bug fix: saving a core corrupted callbacks on x86/x86-64
1786 * bug fix: closed a loophole in metacircularity detection and
1787 grounding in the PCL implementation of CLOS.
1788 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1789 (reported by tomppa on #lisp)
1790 * bug fix: clear the direction flag on Lisp -> C transitions, as
1791 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1792 (reported by Andrej Grozin and Hendrik Maryns)
1793 * optimization: major improvements to GC efficiency on GENCGC platforms
1794 * optimization: faster implementation of EQUAL
1795 * optimization: emit more efficient opcodes for some common
1796 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1797 * optimization: several other minor code-generation improvements on x86-64
1798 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1800 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1801 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1802 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1803 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1804 by ANSI as a generic function, and for consistency (SETF
1805 GENERIC-FUNCTION-NAME) is treated likewise.
1806 * fixed bug #233.b: make constraint propagation notice when a variable
1807 value is changed after it is referenced but before it is used
1808 * fixed bug #296: no more arbitrary behaviour from filenames with
1809 odd characters as --load arguments. (reported by Adam Warner)
1810 * fixed bug #390: :CHARACTER-SET pathname components now work as
1811 expected. (reported by Tim Daly Jr)
1812 * fixed bug #391: complicated :TYPE intersections in slot
1813 definitions no longer cause an error in PCL internals.
1814 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1815 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1816 returning the number of octets which would be written to the
1817 file-stream. (thanks to Robert J. Macomber)
1818 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1819 arguments to the internal stream functions. (thanks to David
1821 * bug fix: stack exhaustion is now handled on the x86/SunOS
1822 platform. (thanks to Daisuke Homma)
1823 * bug fix: more accurate ROOM results on GENCGC platforms
1824 * optimization: improved type inference for arithmetic-for
1825 index variables in LOOP
1826 * optimization: faster floating-point SQRT on x86-64
1827 * fixed some bugs revealed by Paul Dietz' test suite:
1828 ** DOCUMENTATION returns NIL instead of "" for method combinations
1829 that don't have a docstring
1831 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1832 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1833 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1834 therefore are not customizeable by user code (as seems to be at
1835 least permitted and maybe required by AMOP). As a consolation,
1836 however, the SBCL implementation of these functions now calls
1837 REINITIALIZE-INSTANCE as specified by AMOP.
1838 * bug fix: slot-definition documentation is propagated as per ANSI
1839 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1840 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1841 argument, as do eslotd initialization methods. (from Pascal
1842 Costanza's "Closer" project)
1843 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1844 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1846 * bug fix: it is now possible to have more than one subclass of
1847 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1848 (reported by Bruno Haible, Pascal Costanza and others)
1849 * bug fix: the dependent update protocol now works for generic
1850 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1851 and Pascal Costanza)
1852 * bug fix: condition-class instances corresponding to
1853 DEFINE-CONDITION forms are now created eagerly. (reported by
1854 Kalle Olavi Niemitalo on comp.lang.lisp)
1855 * bug fix: floating point printing is more accurate in some
1856 circumstances. (thanks to Simon Alexander)
1857 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1858 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1859 * bug fix: callbacks on OS X now preserve stack-alignment.
1860 (thanks to Cyrus Harmon)
1861 * enhancement: the x86-64 disassembler is much better at
1862 disassembling SSE instructions. (thanks to Lutz Euler)
1863 * enhancement: CHECK-TYPE on a variable now allows type-inference
1864 (thanks to Vincent Arkesteijn)
1865 * optimization: improved performance of EUC-JP external format.
1866 (thanks to NIIMI Satoshi)
1867 * optimization: performance improvements to IO on file streams of
1868 :ELEMENT-TYPE CHARACTER
1869 * optimization: much faster memory allocation on x86-64
1870 * optimization: faster garbage collections (latency and throughput)
1872 * optimization: faster bignum subtraction and division on x86 and x86-64
1873 (thanks to Lutz Euler)
1874 * optimization: more accurate type-inference for loops that use a
1875 floating point index variable or a negative step.
1877 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1878 * bug fix: add a workaround to SBCL looping infinitely at startup on
1879 Linux kernels with apparently buggy implementations of personality().
1880 (thanks to Svein Ove Aas)
1881 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1882 (thanks to David Lichteblau)
1883 * bug fix: local bindings shadow global symbol macros for
1884 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1885 * optimization: non-open coded uses of numeric comparison operators
1886 (e.g. >) no longer cons when called with more than one parameter
1887 on platforms supporting dynamic-extent allocation.
1888 * enhancement: saving cores with foreign code loaded is now supported
1889 on MIPS/Linux in addition to the previously supported platforms.
1890 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1891 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1892 * bug fix: division by zero in sb-sprof when no samples were collected
1893 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1894 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1895 (thanks to Alexander Kjeldaas)
1896 * new feature: ignoring the return values of destructive functions
1897 like NREVERSE signals a compile-time style-warning.
1898 (thanks to Kevin Reid)
1899 * new feature: the alignment of alien structure fields can be
1900 explicitly specified. (thanks to Cyrus Harmon)
1901 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1902 and dump core on SIGQUIT
1904 ** incompatible change: threads do not inherit values of specials
1905 from their parents (see manual)
1906 ** bug fix: threads stacks belonging to dead threads are freed by the
1907 next exiting thread, no need to gc to collect thread stacks anymore
1908 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1909 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1910 ** bug fix: dynamic variable and thread start related gc lossage
1911 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1913 * fixed some bugs revealed by Paul Dietz' test suite:
1914 ** SUBTYPEP is slightly more accurate on heinously complicated
1915 CONS types where some of the members have uncertain (in the
1916 NIL, NIL sense) type relationships to each other.
1918 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1919 no longer purified unless :PURIFY T is explicitly specified.
1920 ** Non-purified cores are significantly smaller than before
1922 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1923 * new feature: timers based on Zach Beane's excellent timer package
1924 * added support for the following external formats: koi8-u,
1925 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1926 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1927 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1928 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1929 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1930 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1931 * incompatible change: a threaded SBCL will no longer revert to
1932 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1933 * bug fix: interrupts are disabled until startup is complete; no
1934 more sigsegvs when receiving a signal to soon
1935 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1937 * bug fix: add a workaround for the memory randomization features in
1938 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1939 workaround will only be in effect on systems with the proc filesystem
1941 * bug fix: printing objects of type HASH-TABLE signals a
1942 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1944 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1945 have been running for over 50 days. (reported by Gilbert Baumann)
1946 * bug fix: the logic for getting names of functions gets less
1947 confused when confronded with alternate-metaclass
1948 funcallable-instances. (reported by Cyrus Harmon)
1949 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1950 consistent, even on internal alternate-metaclass objects.
1951 * bug fix: flush closure information collected by physical
1952 environment analysis prepass before the main pass. (bug reported
1954 * bug fix: compiler pack phase does not modify a hashtable, which is
1955 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1956 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1957 may be expanded. (reported by Alexander <malishev> on c.l.l)
1958 * bug fix: no more style-warnings when compiling code using LAST
1959 under high-SPEED low-SPACE settings. (reported by David Wallin
1961 * fixed some incompatibilities between SBCL's MOP and the MOP
1963 ** the METAOBJECT class is now implemented;
1964 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1965 STANDARD-OBJECT, as required;
1966 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1967 now compatible (as required by VALIDATE-SUPERCLASS); there
1968 remains a consistency requirement over the presence or absence
1969 of the FUNCTION class in the superclass list of finalized
1970 classes; see the manual for more details;
1971 ** the :AROUND method for COMPUTE-SLOTS on
1972 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1973 requested slot ordering.
1975 ** bug fix: parent thread now can be gc'ed even with a live
1977 ** bug fix: binding a special with PROGV to no value is not
1978 the same as that symbol not having been bound (thanks to
1980 ** bug fix: binding specials is thread safe (thanks to
1982 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1983 and SB-SPROF do not die with 'no handler for signal XX in
1984 interrupt_handle_now(..)' anymore
1985 ** bug fix: WITH-TIMEOUT works with multiple running threads
1986 * fixed some bugs revealed by Paul Dietz' test suite:
1987 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1988 the :method-class keyword argument.
1990 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1991 * new port: the Solaris operating system on x86 processors is now
1992 mostly supported, though some rough edges in the environment
1993 remain. (thanks to Daisuke Homma)
1994 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1995 space for its heap. (thanks to Thiemo Seufer)
1996 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1997 closures. (thanks to Thiemo Seufer)
1998 * minor incompatible change: eof selects abort in the debugger.
1999 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2000 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2002 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2003 deprecated, and will go away in a future revision of SBCL.
2004 * minor incompatible change: GC-ON and GC-OFF are no longer
2005 implemented with a counter, it does not matter how many times gc
2006 is switched on or off
2007 * bug fix: discriminating functions for generic function classes
2008 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2009 make invalid assumptions about method precedence order. (reported
2011 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2012 platforms. (thanks to Thiemo Seufer)
2013 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2014 * bug fix: correct pathname printing with printer escaping is on.
2015 (thanks to Kevin Reid)
2016 * bug fix: complex VOP definitions in "user-space" no longer trigger
2017 package locks. (reported by Zach Beane)
2018 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2019 for funcallable-instance functions, and is no different from
2021 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2022 characters in the current readtable. (reported by Nicholas Neuss)
2023 * bug fix: SUBTYPEP on various CONS types returns more a more
2024 accurate acknowledgment of its certainty.
2025 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2026 lists in some cases. This partially fixes bug 384.
2027 * flush all standard streams before prompting in the REPL and the
2029 * bug fix: signal handling and triggering gc do not conflict
2030 directly anymore, in particular a high frequency sb-sprof does
2031 not prevent gc from running
2032 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2033 approximation for timezone and DST information between the
2034 universal time epoch and the smallest negative 32-bit time_t.
2035 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2036 year 1899 so long as the encoded time is non-negative.
2037 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2038 the correct answer for non-constant rotate amounts when performing
2039 an inline 32-bit rotation.
2041 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2042 there is only one thread in the session
2043 ** bug fix: memory leak for streams created in one thread and
2044 written to in another
2045 ** bug fix: lockup when compiled with gcc4
2046 ** bug fix: race that allows the gc to be triggered when gc is
2048 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2049 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2051 ** bug fix: finished threads are gc'ed properly
2052 * fixed some bugs revealed by Paul Dietz' test suite:
2053 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2054 has arguments with a different set of applicable methods from
2055 the orignal arguments.
2056 ** The type error thrown by MAP now has a correct expected-type
2058 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2059 name a compiled function.
2060 ** Three MISC tests where a large bignum was improperly coerced to
2061 a float that couldn't represent that bignum during type
2062 derivation were fixed.
2063 ** SUBTYPEP can now handle types involving the negation of a
2064 list-form FUNCTION type.
2065 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2066 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2067 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2069 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2070 * New feature: Experimental support for bivalent streams: streams
2071 opened with :element-type :default now allow character and binary
2072 (unsigned-byte 8) I/O
2073 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2074 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2076 * bug fix: no more highly sporadic "couldn't check whether ~S is
2077 readable" when reading a stream and an interrupt hits in the middle
2078 of a select system call
2079 * compiler better recognizes complex arrays (reported by Eduardo
2081 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2082 for variables on SBCL built with linkage-tables. (reported by Luis
2084 * various error reporting improvements.
2085 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2086 (Thanks to Thiemo Seufer)
2087 * bug fix: nested reader invokations work correctly
2088 * bug fix: it is possible to have simultaneous references to foreign
2089 code and foreign data with the same name.
2091 ** added x86-64 support
2092 ** incompatible change: the threading api now works with thread
2093 objects instead of thread ids
2094 ** bug fix: threads are protected from signals and interruption when
2095 starting up or going down
2096 ** bug fix: a race where an exiting thread could lose its stack to gc
2097 ** bug fix: don't halt on infinite error in threads if possible
2098 ** fixed numerous gc deadlocks introduced in the pthread merge
2099 ** bug fix: fixed thread safety issues in read and print
2100 ** bug fix: debugger doesn't hang on session lock if interrupted at
2101 an inappropriate moment
2102 ** bug fix: run-program is now thread safe(r)
2103 ** bug fix: inner with-recursive-lock no longer releases the mutex
2104 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2105 * fixed some bugs revealed by Paul Dietz' test suite:
2106 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2107 EXPECTED-TYPE slots filled.
2108 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2110 ** MAKE-CONDITION accepts classes as type-designators.
2111 ** COMPILE may never return NIL.
2112 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2113 range before calling Unix time functions
2115 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2116 * numerous signal handling fixes to increase stability
2117 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2118 * minor incompatible change: we now correctly canonize default
2119 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2120 as per the MOP, rather than the historical (INITARG INITFUNCTION
2121 INITFORM). (reported by Bruno Haible)
2122 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2123 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2124 for more information.
2125 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2126 pathname is a directory pathname.
2127 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2128 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2130 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2131 :METACLASS argument in addition to a class name. (reported by
2132 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2133 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2134 (reported by Bruno Haible; patch from Gerd Moellmann)
2135 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2137 * bug fix: more cleanups to the floating point exception handling on
2138 x86-64 (thanks to James Knight)
2139 * bug fix: the compiler does not try to constant fold calls of
2140 COERCE and BIT-* functions when they return freshly constructed
2141 objects. (reported by Nikodemus Siivola and Paul Dietz)
2142 * optimization: improved the MIPS versions of generic (in the
2143 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2144 * optimization: direct conversion of (unsigned-byte 32) to floats on
2145 the PowerPC platform.
2146 * optimization: structure instances with raw slots now use less
2147 memory, and probably show better memory locality. (thanks to
2149 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2150 are treated as requests for stack allocation on the x86-64,
2151 Alpha-32, PPC and SPARC platforms.
2152 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2153 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2154 (thanks to Tony Martinez)
2156 ** gcing a dead thread can no longer lead to lockups
2157 ** threads block signals until they are set up properly
2158 ** errno is no longer shared by threads
2159 ** interrupt-thread restores the eflags register on x86
2160 ** fixed some lockups due to gc/thread interaction
2161 * fixed some bugs revealed by Paul Dietz' test suite:
2162 ** invalid dotted lists no longer raise a read error when
2163 *READ-SUPPRESS* is T
2164 ** signal an error if a symbol that names a declaration is used
2165 as the name of a type, or vice versa
2166 ** allow using the (declare (typespec var*)) abbreviation for
2167 (declare (type typespec var*)) with all type specifiers
2168 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2169 ** always return NIL from PPRINT-POP when OBJECT is NIL
2170 ** don't signal errors when pretty-printing malformed LABELS,
2171 FLET or MACROLET forms
2172 ** declarations in a DOLIST body are also in scope for the
2174 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2176 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2179 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2180 * fixed cross-compiler leakages that prevented building a 32-bit
2181 target with a 64-bit host compiler.
2182 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2183 opened with :IF-EXISTS :OVERWRITE.
2184 * fixed bug 281: error for an invalid qualifier in a short-form method
2185 combination method is not signalled until the faulty method is called.
2186 * bug fix: iteration variable type inferrer failed to deal with open
2187 intervals. (reported by Alan Shields)
2188 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2189 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2190 or more runtime options were provided to the sbcl binary.
2191 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2192 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2193 * optimization: there's now a fast-path for fixnum arguments in the
2194 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2195 * optimization: the code generated on x86-64 is more compact thanks
2196 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2197 * bug fix: floating-point exception handling now partly works on
2198 x86-64. (Thanks to James Knight)
2199 * improvement to the MIPS backend from Thiemo Seufer: C-style
2200 64-bit long long arguments and return values to alien functions
2202 * fixed some bugs revealed by Paul Dietz' test suite:
2203 ** the type-error signalled from WARN has a filled-in DATUM slot.
2204 ** the type-error required when a stream is not associated with
2205 a file has the stream as its datum.
2206 ** type-errors on single-floats on x86-64 no longer have
2207 :INVALID-OBJECT as the datum
2208 ** the type-errors signalled for invalid function names now have
2209 a correct expected type
2210 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2211 for structures defined with a :TYPE. Documentation strings for
2212 typed structures are no longer immediately discarded
2213 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2214 broadcast streams and synonym streams. FILE-LENGTH now also works
2215 on broadcast streams.
2217 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2218 * incompatible change: the --noprogrammer option, deprecated since
2219 version 0.7.5, has been removed. Please use the equivalent
2220 --disable-debugger option instead.
2221 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2223 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2224 inoperational for a while now) has been completely removed.
2225 * null lexical environments are now printed as #<NULL-LEXENV>,
2226 significantly reducing the amount of clutter in typical backtraces.
2227 * documentation on weak pointers, finalization, and after GC hooks
2228 has been added to the manual.
2229 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2230 as other specialized array types, is much faster. SUBSEQ and
2231 COPY-SEQ on such arrays have also been sped up.
2232 * optimization: EQL is now more efficient when at least other argument
2233 is known to be of type (OR FIXNUM (NOT NUMBER)).
2234 * fixed bug: the runtime is now less vulnerable to changes in the
2235 size of the SBCL object on OS X, and virtual memory is reserved for
2236 all spaces that need to be at a fixed address.
2237 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2238 * fixed bug: finalizers and after GC hooks that cause consing are now
2240 * fixed bug: compiler error messages and summaries are now printed to
2241 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2242 * fixed inference of the upper bound of an iteration variable.
2243 (reported by Rajat Datta).
2244 * fixed bug 211e: calling local functions with duplicated constant
2245 keyword argument no longer causes a bogus style warning about an
2247 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2248 ftype declaration to be disregarded. (reported by Dave Roberts)
2249 * fixed bug 373: caused by erronous compilation of references to alien
2250 variables in the runtime on ppc/darwin.
2251 * fixed bug 376: CONJUGATE type deriver.
2252 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2253 (reported by Baughn on #lisp)
2254 * a cross-compiler bug on non-x86 platforms has been identified and
2255 fixed. (thanks to Bruno Haible)
2256 * improvements to the MIPS runtime code for increased stability.
2257 (thanks to Thiemo Seufer)
2258 * increased the maximimum compact environment size to allow
2259 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2260 * partial workaround for bug 135: don't name the function we're
2261 calling for hairy cases of EVAL, so as not to accumulate one environment
2262 entry per call to EVAL. (reported by Kevin Reid)
2263 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2264 * optimization: type testing for non-vector arrays should be faster.
2265 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2267 * bug fix: setting 31st element of a bit vector to zero did not work
2269 * bug fix: redefining a class definition which failed due to a
2270 previous accessor / function clash now works (but see BUGS entry
2271 #380 for more problems in this area). (thanks to Zach Beane)
2272 * the long form of DEFINE-METHOD-COMBINATION disables method group
2273 checking when given a single method group with pattern *. (thanks
2275 * on x86 compiler supports stack allocation of results of simple
2276 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2277 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2278 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2279 * fixed some bugs related to Unicode integration:
2280 ** the restarts for recovering from input and output encoding
2281 errors only appear when there is in fact such an error to
2283 * fixed some bugs revealed by Paul Dietz' test suite:
2284 ** MISC.549 and similar: late transformation of unsafe type
2285 assertions into derived types caused unexpected code
2287 ** SCALE-FLOAT type deriver is less wrong.
2288 ** type derivers for EXP, LOG and similar functions compute result
2289 types for complex arguments better.
2290 ** (MISC.563) CONJUGATE type deriver works for very restricted
2292 ** out-of-line type testers for character strings are available.
2293 ** EQUAL compiler transform understands specialness of objects
2295 ** accessing double-floats stored on the stack now works on x86-64.
2296 ** debugger internals could sometimes create invalid lispobjs,
2297 resulting in GC crashes.
2298 ** MISC.548: type check weakening can convert required type into
2300 ** initialization forms for bindings are not in scope of free special
2303 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2304 * incompatible change: thread support for non-NPTL systems has
2305 been removed - locking is buggy and unreliable. A threaded
2306 SBCL build will now warn at startup and refuse to create
2307 new threads, unless futex support is detected in the kernel
2308 * incompatible change: the top level REPL now has only an ABORT
2309 restart associated with it, not TOPLEVEL and ABORT as it used to.
2310 TOP and TOPLEVEL are now available as debugger commands for
2311 returning to the top level.
2312 * incompatible change: forms evaluated in the REPL now use the
2313 global optimization policy.
2314 * incompatible change: user- and system-initialization files are
2315 no longer processed with LOAD, but by READ and EVAL; hence the
2316 global optimization policy, startup package, readtable, etc,
2318 * The .fasl file format number has been incremented because of
2319 various incompatible changes.
2320 * internal entry point details and argument counts no longer appear
2321 in backtraces unless explicitly requested by setting
2322 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2323 * built-in and standard functions no longer have names like "top
2324 level local call to FOO".
2325 * fixed bug 32: functions defined in non-null lexical environments
2326 now have more legible printed representation
2327 * fixed bug 33: functions defined in non-null lexical environemnts
2328 are now more amenable to inspection by INSPECT.
2329 * workaround for bug 354: XEPs no longer appear in backtraces unless
2330 explicitly requested.
2331 * fixed bug: receiving the signal which results from attempting to
2332 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2333 SIGBUS on other *BSDs) on architectures where the C stack is also
2334 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2335 to debugger confusion or wild instability. (reported by Cheuksan
2337 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2338 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2339 (reported by Lutz Euler)
2340 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2341 compiled code. (reported by Paul Dietz)
2342 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2343 specialized parameter to a method to something that is not TYPEP
2344 the specializer is now possible.
2345 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2346 face of package deletion.
2347 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2348 pathname. (reported by David Tolpin on c.l.l)
2349 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2350 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2351 STRING-STREAM and FILE-STREAM, respectively.
2352 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2353 than previously; in addition, its test suite is now run on build.
2354 (thanks to Luke Gorrie)
2355 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2356 * optimization: added a immediate representation for single-floats
2358 * fixed some bugs revealed by Paul Dietz' test suite:
2359 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2360 ** attempting to create a package with a colliding nickname causes
2361 correctable errors to be signalled.
2362 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2363 ** several x86-64 backend bugs related to sign-extension of immediate
2366 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2367 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2368 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2370 * fixed loading of multiply forward-referenced layouts.
2371 (thanks to Cheuksan Wang)
2372 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2373 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2374 (see COMPILE-FILE documentation for details of :PRINT option)
2375 * fixed bugs 19 and 317: fixed-format floating point printing is
2376 more accurate. This also fixes a bug reported by Adam Warner
2377 related to the ~@F format directive.
2378 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2380 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2381 dispatch table if the from-char is a dispatch macro character.
2382 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2383 by the wordsize no longer ignore the last word. (reported by Lutz
2385 * fixed bug in type checking of dynamic-extent variables. (reported
2387 * optimization: sequence traversal functions use their freedom to
2388 coerce function designators to functions.
2389 * optimization: code with many calls to CLOS methods specialized on
2390 CLOS classes has had redundant type checks removed.
2391 * optimization: added declarations to speed up operations that access
2392 the internal character database (for example STRING-UPCASE)
2393 * optimization: comparison operations between floats and sufficiently small
2394 fixnums no longer create extra rationals
2395 * fixed some bugs related to Unicode integration:
2396 ** portions of multibyte characters at the end of buffers for
2397 character-based file input are correctly transferred to the
2398 start of the buffer at the next read.
2399 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2400 passing it through to OPEN.
2401 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2402 argument given to internal calls to OPEN.
2403 ** the built-in comment readers (introduced by character sequences
2404 ";" and "#|") are more forgiving to encoding errors; they will
2405 STYLE-WARN and then attempt to resync the stream at a character
2406 boundary. (thanks to Teemu Kalvas)
2407 * fixed some bugs in the x86-64 port:
2408 ** Negative short int return values from c-calls are sign-extended
2410 ** The stack is aligned to 16-bytes for c-calls, as required by
2411 the ABI. (thanks to Cheuksan Wang)
2412 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2413 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2414 for enums. (thanks to Vincent Arkesteijn)
2415 ** Multiple small optimizations and bugfixes for floating point
2417 * fixed some bugs revealed by Paul Dietz' test suite:
2418 ** Space, Tab, Linefeed, Return and Page have the invalid
2419 secondary constituent character trait.
2420 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2422 ** WITH-INPUT-FROM-STRING should only update the index place on
2424 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2425 works more reliably.
2426 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2427 with one-dimensional arrays with fill pointers.
2428 ** TYPE-OF failed on a complex with an integer realpart and a
2430 ** compiler failure during type inference for the code of form
2431 (IF (EQL X (THE ...)) ...) (MISC.535).
2433 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2434 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2435 platform. The port supports 61-bit fixnums, large memory spaces
2436 and reloading shared object files.
2437 * enhancement: saving cores with foreign code loaded is now
2438 supported on ppc/Darwin in addition to the previously supported
2440 * enhancement: the statistical profiler now walks deeper into the
2441 call stack for more meaningful call-graphs and accrued time
2442 reports (x86/x86-64 only). It also now reports time spent in
2444 * enhancement: it is now possible to trace most individual methods
2445 of a generic function in addition to tracing the generic function
2447 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2449 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2450 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2451 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2452 produces an error. (thanks to Vincent Arkesteijn)
2453 * bug fix: NAMESTRING on pathnames with :WILD components in their
2454 directories works correctly. (thanks to Artem V. Andreev)
2455 * fixed bug 125: compiler preserves identity of closures. (reported
2457 * bug fixed: functions with &REST arguments sometimes failed with
2458 "Undefined function" when compiled with (DEBUG 3). (reported by
2460 * bug fix: overflow during compiling of setting element of a bit
2461 vector with constant index and value. (reported by Timmy Douglas)
2462 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2463 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2464 * on x86 compiler partially supports stack allocation of dynamic-extent
2466 * GO and RETURN-FROM do not check the extent of their exit points
2467 when compiled with SAFETY 0.
2468 * fixed some bugs related to Unicode integration:
2469 ** encoding and decoding errors are now much more robustly
2470 handled; it should now be possible to recover even from invalid
2471 input or output to the terminal. (thanks to Teemu Kalvas)
2472 ** provided a first cut at implementing STRING-TO-OCTETS and
2473 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2474 ** altered the SB-MD5 contributed module slightly, changing the
2475 interface just enough for it to be supportable for builds where
2476 lisp characters are not eight bits.
2477 * fixed some bugs revealed by Paul Dietz' test suite:
2478 ** the FORMATTER-generated functions for ~V[ conditionals require
2479 the correct number of arguments.
2480 ** READ-FROM-STRING returns the mandated second value when applied
2481 to displaced strings.
2482 ** the #\Rubout and #\Backspace characters are treated as invalid
2483 constituent characters by the tokenizer.
2485 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2486 * new feature: reloading changed shared object files with
2487 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2488 * new feature: references to foreign variables and functions
2489 can now be compiled and loaded before the corresponding shared
2490 object file is loaded, as long as the foreign definitions are
2491 available at runtime.
2492 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2493 supported. (thanks to Dan Debertin)
2494 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2495 just keywords. (thanks to Vincent Arkesteijn)
2496 * fixed bug #331: structure-class instances corresponding to
2497 DEFSTRUCT forms are now created eagerly.
2498 * fixed bug #345: backtraces from calls to undefined functions work
2499 on x86 as well. Related bug #61 is now also partially fixed on x86
2500 (backtraces from throws to unknown catch tags.)
2501 * bug fix: lambda-list parsing is now stricter vrt. order and number
2502 of lambda-list keywords.
2503 * bug fix: as specified by AMOP, an error is signalled if a
2504 class-option appears multiple times in a DEFCLASS form. (reported
2506 * bug fix: RANDOM can be compiled when the compiler derives the type
2507 of its numeric argument as a disjoint set of small integers.
2508 (reported by Paul Dietz)
2509 * bug fix: starting a core saved with shared objects loaded when
2510 those objects are not available no longer causes threaded SBCL to
2511 hang. (reported by Sean Ross)
2512 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2514 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2515 argument, which must always be NIL. (reported by Kalle Niemitalo)
2516 * bug fix: printing 1.0d+23 no longer results in an error.
2517 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2518 * bug fix: structure slot setters preserve evaluation order. (thanks
2520 * fixed some bugs related to Unicode integration:
2521 ** RUN-PROGRAM can allow its child to take input from a Lisp
2522 stream. (reported by Stefan Scholl)
2523 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2524 locales. (reported by Ken Causey)
2525 * fixed some bugs revealed by Paul Dietz' test suite:
2526 ** INCF, DECF and REMF evaluate their place form as specified in
2528 ** FORMATTER expands ~{ ~} iteration directives with V or #
2529 parameters correctly.
2530 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2531 consequent uses no arguments correctly.
2532 ** the system has a partial understanding of the (COMPLEX RATIO)
2534 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2537 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2538 * new feature: a build-time option (controlled by the :SB-UNICODE
2539 keyword feature, enabled by default) for building the system with
2540 support for the entire 21-bit character space defined by the
2542 * new feature: the system now has rudimentary external-format
2543 support; the primary user-visible change at this time is that
2544 characters with the high bit set (such as lower-case-e-acute) will
2545 print correctly to a terminal in a UTF-8 environment.
2546 * minor incompatible change: BASE-CHAR no longer names a class;
2547 however, CHARACTER continues to do so, as required by ANSI.
2548 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2549 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2550 has been moved to the SB-EXT package (temporarily re-exported from
2552 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2553 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2555 * fixed bug #351: better error-handlind and reporting for malformed
2557 * fixed bug #350: bignum-printing is now more memory-efficient,
2558 allowing printing of very large bignums, eg. (expt 2 10000000).
2559 (reported by Bruno Haible)
2560 * fixed bug #302: better primitive-type selection for intersection
2562 * fixed bug #308: non-graphic characters now all have names, as
2563 required. (reported by Bruno Haible)
2564 * bug fix: redefining a class with different superclasses now correctly
2565 removes it from the direct-subclasses of its previous superclasses.
2566 (reported by David Morse)
2567 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2568 new value now works. (reported by Bruno Haible)
2569 * bug fix: correct canonicalization of multiple non-standard slot
2570 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2571 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2572 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2573 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2574 now exists, an signals an error.
2575 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2576 during macroexpansion for non-iteration variables as well. (reported
2577 by Bruno Haible for CMUCL)
2578 * bug fix: Cyclic structures and unprintable objects in compiler
2579 messages no longer cause errors. (reported by Bruno Haible)
2580 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2581 and READ-FROM-STRING all now return a primary value of NIL if
2582 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2583 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2584 (reported by Bruno Haible for CMUCL)
2585 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2586 do not designate a condition. (reported by Bruno Haible for
2588 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2589 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2590 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2591 permitting resolution in favour of any of the conflicting symbols.
2592 (reported by Bruno Haible for CMUCL)
2593 * bug fix: EQUAL compiler optimizations is less aggressive on
2594 strings which can potentially compare true despite having distinct
2595 specialized array element types.
2596 * bug fix: unit enumerations can be defined without dividing by
2597 zero. (thanks to Vincent Arkesteijn)
2598 * FORMAT compile-time argument count checking has been enhanced.
2599 (report from Bruno Haible for CMUCL)
2600 * a partial workaround for the bug 262: the compiler does not try to
2601 inline-expand a local function doing RETURN-FROM from a deleted
2602 BLOCK. (thanks to Peter Denno for the bug report and to David
2603 Wragg for the simple test case)
2604 * fixed some bugs revealed by Paul Dietz' test suite:
2605 ** RENAME-PACKAGE allows all package designators as new package
2607 ** constraint propagation and lambda variable substitution are
2608 more cautious in dealing with partially deleted code.
2609 ** compiler sometimes lost reoptimization passes.
2610 ** CERROR, given a condition as condition designator, passes its
2611 remaining arguments to the continue format control without
2613 ** Case-altering FORMAT directives work correctly on non-ASCII
2615 ** The REAL type specifier handles bounds outside the floating
2616 point ranges without signalling FLOATING-POINT-OVERFLOW.
2617 ** Functions with IR1-transformations can create intercomponent
2618 references to global functions.
2619 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2621 ** FORMAT ~R treats a nil value for its first parameter correctly.
2623 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2624 * enhancement: saving cores with foreign code loaded is now
2625 supported on x86/NetBSD and sparc/Linux in addition to the previously
2626 supported platforms.
2627 * bug fix: on some platforms repeated installations caused multiple
2628 copies of HTML documentation to be installed -- should not happen
2629 any more. (reported by Stefan Scholl)
2630 * bug fix: parsing self-recursive alien record types multiple times
2631 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2632 original patch by Helmut Eller for CMUCL)
2633 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2634 (thanks to Richard Kreuter)
2635 * bug fix: defining classes whose accessors are methods on existing
2636 generic functions in other (locked) packages no longer signals
2637 bogus package lock violations. (reported by François-René Rideau)
2638 * bug fix: special variables as DEFMETHOD parameters no longer have
2639 associated bogus type declarations. (reported by David Wragg and
2641 * bug fix: read-write consistency on streams of element-type
2642 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2643 * bug fix: redefiniton of the only method of a generic function with
2644 no DEFGENERIC no longer emits a full WARNING. In addition,
2645 redefinition of generic functions with no DEFGENERIC to an
2646 incompatible lambda list now signals an error. (thanks to Zach
2648 * bug fix: DEFGENERIC now works even when there's a function of the
2649 same name in an enclosing lexical environment. (thanks to Zach
2651 * fixed compiler failure, caused by instrumenting code during
2652 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2653 * optimization: added loop analysis and improved register allocation
2654 * fixed some bugs revealed by Paul Dietz' test suite:
2655 ** POSITION on displaced vectors with non-zero displacement
2656 returns the right answer.
2657 ** (SIMPLE-STRING) is a valid type specifier for sequence
2659 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2661 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2662 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2664 ** The justification version of the FORMAT ~< directive treats
2665 non-zero minpad parameter correctly.
2667 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2668 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2669 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2670 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2671 the supported interface.
2672 * new feature: Single-stepping of code compiled with DEBUG 2 or
2673 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2674 * new feature: saving cores with foreign code loaded is now
2675 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2676 Timothy Moore's work for CMUCL)
2677 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2678 parameters to * instead of NIL if no initform is supplied.
2679 (reported by Johan Bockgaard)
2680 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2681 correctly when FUNCALL appears as the car of the form. Note:
2682 despite this FUNCALL forms are not currently subject to
2683 compiler-macro expansion. (port of Raymond Toy's fix for the
2684 same from CMUCL, reported by Johan Bockgaard)
2685 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2686 (thanks for Teemu Kalvas)
2687 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2688 case instead of terminating the iteration (thanks for Julian
2689 Squires, Sean Champ and Raymond Toy)
2690 * bug fix: incorrect expansion of defgeneric that caused a style
2691 warning. (thanks for Zach Beane)
2692 * bug fix: slot accessor effective method computation works properly
2693 for classes with multiple non-standard applicable methods on
2694 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2695 * on x86 compiler supports stack allocation of results of LIST and
2696 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2697 CMUCL implementation by Gerd Moellmann)
2698 * fixed some bugs revealed by Paul Dietz' test suite:
2699 ** FORMAT strings with both the ~<~:;~> form of the justification
2700 directive and pretty-printing directives cause an error.
2702 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2703 * incompatible change: the internal functions
2704 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2705 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2706 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2707 instead of the old functions.
2708 * new feature: on platforms where "dladdr" is available foreign
2709 function names now appear in backtraces. (based on Helmut Eller's
2711 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2712 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2714 * documentation: ASDF manual is now distributed with SBCL.
2715 * bug fix: SBCL can now load its contributed modules with REQUIRE
2716 even if the system-provided entries have been removed from
2717 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2719 * bug fix: backtraces involving undefined functions or assembly
2720 routines are more informative. (thanks to Brian Downing)
2721 * bug fix: mutually referent alien structures now work correctly.
2722 (reported by Rick Taube)
2723 * bug fix: structures defined by WITH-ALIEN can be referred to
2724 within other definitions in the same WITH-ALIEN.
2725 * bug fix: division operators (MOD, TRUNCATE and the like) with
2726 constant zero divisors and integer dividends no longer generate
2728 * bug fix: provide default methods for INPUT-STREAM-P and
2729 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2730 * bug fix: improve the detection and resolution of MOP metacycles
2731 (where effective method computation depends on the generic function
2732 having its effective method computed). (reported by Bruno Haible)
2733 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2734 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2735 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2736 * bug fix: pathnames with relative directory components can be
2737 represented relative to default pathnames.
2738 * optimization: in taking the GCD of bignums, reduce the two bignums
2739 to approximately the same size (using Euclid's algorithm) before
2740 applying the more sophisticated binary GCD. (thanks to Juho
2742 * optimization: COUNT on bitvectors now operates word-at-a-time.
2743 * optimization: ASH with a positive, but not necessarily constant,
2744 (leftwards) shift, when in a modular context, is compiled to a
2746 * fixed some bugs revealed by Paul Dietz' test suite:
2747 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2748 if the corresponding argument is NIL.
2749 ** FORMAT directives accepting a minpad parameter treat negative
2751 ** literal commas as character parameters to FORMAT directives are
2753 ** literal spaces directly after ~<Newline> directives within a
2754 format-logical-block (~:< ~@:>) do not induce :FILL-style
2755 conditional newlines.
2756 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2757 as specified: it no longer includes conditional newlines).
2758 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2760 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2761 :PER-LINE-PREFIX argument does not evaluate to a string.
2763 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2764 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2765 the manual for details; for now, package locks can be disabled by
2766 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2767 if no major problems are found then it is likely that they will be
2768 compiled in unconditionally.
2769 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2770 unsupported operators on all platforms. To load a shared library
2771 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2772 object file, link it into a shared library outside of SBCL and
2773 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2775 * bug workaround: ROOM T and the GC were not working together
2776 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2777 reporting facility aren't preserved. That reporting has been
2778 disabled, so now until and unless someone figures out how to make it
2779 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2780 * minor incompatible change: as threatened around sbcl-0.8.0, the
2781 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2782 The symbols are also exported from SB-PCL for backwards
2783 compatibility, but more so than before SB-PCL should be treated as
2784 an implementation-internal package.
2785 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2787 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2788 It is known as of this release not to work on the Alpha, however.
2789 * fixed bug #167: errors signalled due to illegal syntax in method
2790 bodies are now more legible.
2791 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2792 designators and can hence be used with TYPEP.
2793 * fixed bug #333: CHECK-TYPE now ensures that the type error
2794 signalled, if any, has the right object to be accessed by
2795 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2796 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2797 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2799 * fixed bug #334: programmatic addition of slots using specialized
2800 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2801 and :ALLOCATION :CLASS slots.
2802 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2803 float exponents. (rereported by Peter Seibel)
2804 * fixed a bug: #\Space (and other whitespace characters) are no
2805 longer considered to be macro characters in standard syntax by
2806 GET-MACRO-CHARACTER.
2807 * fixed bug: initialization of condition class metaobjects no longer
2808 causes an instance of the condition to be created. (reported by
2810 * fixed bug: it is now possible to have slots such that
2811 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2812 description is neither :INSTANCE nor :CLASS.
2813 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2814 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2815 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2816 non-standard SLOT-DEFINITION-ALLOCATION values.
2817 * fixed bugs: various race conditions handling exiting threads.
2818 CL-PPCRE's thread torture test now passes.
2819 * fixed arguably-a-bug: GC time proportional to number of threads in
2820 system even when most of them are idle
2821 * optimization: improved performance of BIT and SBIT on bit-vectors.
2822 * .fasl file incompatibility: The fasl file version number has
2823 been incremented because of changes associated with package locks.
2825 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2826 * minor incompatible change: the system no longer provides
2827 optimization hints (conditions which are TYPEP
2828 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2829 mode; these hints are still emitted when higher SPEED optimization
2831 * new contrib module: a sampling profiler (profiling by statistical
2832 sampling, rather than by instrumenting functions) is available as
2833 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2834 * the behaviour of the standard function ED is now customizeable by
2835 third parties through a hook variable: see ED's documentation
2836 string for information on the protocol.
2837 * the compiler no longer emits efficiency notes for (FUNCALL X)
2838 when the type of X is uncertain under default optimization
2840 * fixed bug 276: mutating a binding of a specialized parameter to a
2841 method to something that is not TYPEP the specializer is now
2843 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2844 exhibit the required behaviour on the x86 platform. (thanks to
2845 Peter van Eynde, Eric Marsden and Bruno Haible)
2846 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2847 even for difficult arguments. (reported by Peter Graves)
2848 * fixed bug 141a: the backquote printer now descends quoted
2850 * fixed another bug in backquote printing: no more destructive
2851 modification of the form's list structure. (reported by Brian
2853 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2854 move between its address being taken and the call to
2855 interrupt_thread, fixing a crashing race condition.
2856 * the SB-POSIX contrib implementation has been adjusted so that it
2857 no longer exhibits ridiculously poor performance when constructing
2858 instances corresponding to C structs.
2860 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2861 * minor incompatible change: the sb-grovel contrib now treats C
2862 structures as alien (in the sense of SB-ALIEN) objects rather than
2863 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2864 has implications for memory management of client code
2865 (sb-grovel-returned objects must now be manually managed) and for
2866 type safety (alien objects now have full types).
2867 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2868 used to control emission of compiler diagnostics, rather than the
2869 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2870 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2871 quality should be considered deprecated.
2872 * install.sh now installs the user manual as well
2873 * (not quite a new documentable feature, but worth considering in
2874 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2875 beginnings of a semantically meaningful condition hierarchy is
2876 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2878 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2879 designator as the defaults argument.
2880 * fixed bug: Displaced arrays whose displaced-to array has become
2881 too small now cause ARRAY-DIMENSION to signal an error, providing
2882 for safer bounds-checking. (reported by Bruno Haible)
2883 * fixed bug: DEFCLASS slot definitions with identical :READER and
2884 :WRITER names now signal a reasonable error. (reported by Thomas
2886 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2888 * fixed bug: Invalid slot specification errors now print correctly.
2889 (thanks to Zach Beane)
2890 * fixed bug 320: Shared to local slot value transfers in class
2891 redefinitions now happen corrently from superclasses as
2892 well. (reported by Bruno Haible)
2893 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2895 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2896 improper lists correctly. (reported by Bruno Haible)
2897 * fixed bug 313: source-transform for <fun-name> was erroneously
2898 applied to a call of a value of a variable with name <fun-name>.
2899 (reported by Antonio Menezes Leitao)
2900 * fixed bug 307: The obsolete instance protocol ensures that
2901 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2902 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2903 remove dead unknown-values globs from the middle of the stack.
2904 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2905 easier to resume long computations after using *BREAK-ON-SIGNALS*
2906 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2907 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2908 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2909 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2910 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2911 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2913 * fixed a (fairly theoretical) bug in string printing: if
2914 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2915 does not have array-element-type equal to the most general string
2917 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2918 function name. (thanks to Nikodemus Siivola)
2919 * fixed bug: compile-time format string checker failed on
2920 non-closed ~{. (reported by Thomas F Burdick)
2921 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2922 don't warn on legal loop code involving more than one aggregate
2923 boolean. (thanks to Nikodemus Siivola)
2924 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2925 in keyword position to MAKE-PACKAGE was not being reported as
2927 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2928 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2930 * fixed bugs 280 and 312: the checking for multiple definitions in a
2931 file is less likely to become confused by uses of inline
2933 * fixed bug: the #S reader macro performs the keyword coercion
2934 specified for slot names. (reported by Kalle Niemitalo)
2935 * fixed bug: lambda lists may contain symbols whose names start with
2936 & but are not lambda-list-keywords; their occurrence triggers a
2938 * fixed bug 321: define-method-combination argument lambda lists do
2939 not cause invalid code to be generated when &optional or &aux
2940 variables have default values. (reported by Bruno Haible)
2941 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2942 have CLOS classes; this appears also to have fixed reported
2943 instability in stack exhaustion detection.
2944 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2945 MUFFLE-WARNING when no associated restart is present is now
2947 * optimization: rearranged the expansion of various defining macros
2948 so that each expands into only one top-level form in a
2949 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2951 * optimization: used a previously little-used slot in symbols to
2952 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2954 * fixed some bugs revealed by Paul Dietz' test suite:
2955 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2957 ** Fixed an optimization bug related to inheritance of initforms
2958 from local to shared slots.
2959 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2960 ** CAST optimizer forgot to flush argument derived type.
2961 ** print/read consistency on floats is now orders of magnitude
2962 more likely. (thanks also to Bruno Haible for a similar report
2964 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2965 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2966 for objects of type REAL. Make it so.
2967 ** SXHASH is specified (infelicitously) to respect similarity,
2968 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2969 it so. (thanks to Markus Ziegler)
2970 ** on the Alpha, the compiler succeeds in compiling functions
2971 returning a known number of arguments greater than 63.
2972 ** fixed handling of invalid NIL arguments in keyword position
2974 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2976 ** provided a readably-printable representation for RANDOM-STATE
2978 ** ensured that pathnames, where they have a namestring, always
2979 print using #P"..." syntax.
2981 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2982 * Support for the forthcoming 2.0 version of the NetBSD kernel
2983 running on x86 hardware has been added. (thanks to Perry
2984 E. Metzger most immediately, and others for their past work)
2985 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2986 current release version; SBCL's OpenBSD support had been broken
2987 since about the time of OpenBSD's switch to ELF binary format.)
2988 * [placeholder for DX summary]
2989 ** user code with &REST lists declared dynamic-extent, under high
2990 speed or space and low safety and debug optimization policy.
2991 * The manual has been converted to Texinfo format and the debugger
2992 chapter from the cmucl manual has been added.
2993 * A facility has been added to extract documentation strings from
2994 sbcl and store them as Texinfo-formatted snippets for inclusion in
2995 the manual (via Texinfo's @include directive)
2996 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2997 the test case to Dave Roberts)
2998 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2999 pointers. (reported by Sean Ross)
3000 * bug fix: PROFILE output is printed nicely even for large numerical
3001 values. (thanks to Zach Beane)
3002 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3003 greater than 32 handle EOF correctly.
3004 * bug fix: on X86 an immediate argument of the IMUL instruction is
3005 correctly printed in disassembly. (thanks to Lutz Euler)
3006 * bug fix: class slots in redefined classes preserve their old
3007 values. (thanks to Bruno Haible and Nikodemus Siivola)
3008 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3009 succeeds. (reported by Marco Baringer)
3010 * fixed some bugs revealed by Paul Dietz' test suite:
3011 ** READ-SEQUENCE now works on ECHO-STREAMs.
3012 ** RATIONALIZE works more according to its specification. (thanks
3015 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3016 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3017 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3018 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3019 should matter to you only if you rebind the printer control
3020 variables and then find you want different bindings in the
3021 debugger than in the ordinary execution of your program.)
3022 * The runtime build system has been tweaked to support building
3023 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3024 assembler and linker. (thanks to Nikodemus Siivola)
3025 * Unbound, undefined, undeclared variables now trigger full
3026 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3027 more often programmer error than deliberate exploitation of undefined
3029 * optimization: the hash algorithm for strings has changed to one
3030 that is less vulnerable to spurious collisions. (thanks to Juho
3032 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3033 needless bounds checking. (thanks to Juho Snellman)
3034 * optimization: implemented multiplication as a modular
3035 (UNSIGNED-BYTE 32) operation on the PPC backend.
3036 * fixed some bugs revealed by Paul Dietz' test suite:
3037 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3039 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3040 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3041 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3043 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3045 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3047 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3048 their output stream on EOF from read.
3049 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3050 have been read to end-of-file.
3051 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3053 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3054 description of determination of which consecutive characters
3056 ** Printing the "Space" character with escaping on now yields "#\\ ",
3057 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3058 ** Reading floating-point numbers with *READ-BASE* set to a number
3059 less than 10 works correctly.
3060 ** Reading floating-point numbers with *READ-BASE* set to a number
3061 more than 10 works correctly.
3062 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3063 the readtable currently in effect.
3065 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3066 * minor incompatible change: parsing of namestrings on a physical
3067 (Unix) host has changed; numbers after the final #\. in a
3068 namestring are no longer interpreted as a version field. This is
3069 intented to be largely invisible to the user, except that the
3070 meaning of the namestring "*.*.*" has changed: it now refers to a
3071 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3072 should usually be replaced by
3073 (make-pathname :name :wild :type :wild :version :wild)
3074 with the added benefit that this is more likely to be portable.
3075 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3076 option to OPEN now signals an error if the file being opened
3077 exists; this may have an impact on existing code.
3078 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3079 signals received, on the PowerPC platforms (both Linux and
3080 Darwin). (thanks to Pierre Mai for pointing out the location of
3082 * several fixes on OS X: The system now builds and runs cleanly on
3083 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3084 (thanks to Brian Mastenbrook)
3085 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3086 second-resolution: integer multiples of 1/3600 between -24 and 24.
3087 (thanks to Vincent Arkesteijn)
3088 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3089 type when called with 1 argument; PEEK-CHAR checked type of
3090 PEEK-TYPE only after having read first character from a
3091 stream. (reported by Peter Graves)
3092 * bug fix: the garbage collector now has much better locality
3093 behaviour, and in particular no longer treats all memory as being
3094 exhausted when many small objects point to each other in a deeply
3096 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3097 recognized as being TYPEP their class.
3098 * bug fix: the PUSHNEW documentation string has been corrected.
3099 (thanks to Vincent Arkesteijn)
3100 * bug fix: defaulting of the value for the last of an atypically
3101 large number of multiple values being bound was not being
3102 performed correctly on the Alpha or PPC platforms
3103 * optimization: implemented multiplication as a modular
3104 (UNSIGNED-BYTE 32) operation on the x86 backend.
3105 * optimization: SEARCH on simple-base-strings can now be open-coded.
3106 (see also contrib/compiler-extras.lisp for inspiration for
3107 teaching the compiler about the Boyer-Moore algorithm).
3108 * value, returned by MAX (and MIN) called with several EQUALP, but
3109 not EQL, arguments now does not depend on compiler settings.
3110 * fixed some bugs revealed by Paul Dietz' test suite:
3111 ** in stack analysis liveness information is propagated from
3112 non-local entry points.
3113 ** pathwise CAST removing failed when the CAST node did not start
3115 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3116 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3118 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3119 host is already defined.
3120 ** RENAME-FILE works on streams instead of signalling an internal
3122 ** PEEK-CHAR uses the current readtable when determining whether
3123 or not a character is whitespace.
3124 ** MERGE-PATHNAMES handles the case when the pathname does not
3125 specify a name while the default-pathname specifies a version.
3126 ** Pathnames now stand a better chance of respecting print/read
3128 ** Attempting to use standardized file system operators with a
3129 pathname with invalid :DIRECTORY components signals a
3131 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3133 ** DIRECTORY on logical pathnames is more correct.
3134 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3135 signal a TYPE-ERROR if their argument is not a stream.
3136 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3137 designator argument does not designate a stream.
3138 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3139 examining the synonym.
3140 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3142 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3143 element-type larger than ([UN]SIGNED-BYTE 32).
3145 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3146 * When built with the :SB-FUTEX feature, threaded builds now take
3147 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3148 for faster/more reliable mutex and condition variable support.
3149 * Incompatible change (but one you probably shouldn't have been using
3150 anyway): the interface and code for arbitrating between multiple
3151 threads in the same user session has been redesigned.
3152 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3153 error when called without an explicit environment argument.
3154 (thanks to Nikodemus Siivola)
3155 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3156 confused about their position. (thanks to Adam Warner and Gerd
3158 * bug fix: Pretty printing backquoted forms with unquotations in the
3159 argument list position of various code constructs such as LAMBDA
3160 now works correctly. (reported by Paul Dietz)
3161 * bug fix: Pretty printing unquotations no longer loses all
3162 stream position information.
3163 * optimization: performance of string output streams is now less
3164 poor for multiple small sequence writes.
3165 * optimization: performance of CSUBTYPEP in the presence of complex
3166 expressions involving CONS and NOT many times has been improved.
3167 (reported by Paul Dietz)
3168 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3170 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3171 streams for the REPL, for the debugger, and so on. (thanks to
3173 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3174 * fixed some bugs revealed by Paul Dietz' test suite:
3175 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3176 is ignored if it is too small, rather than propagating through
3177 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3178 ** extremely complex negations of CONS types were not being
3179 sufficiently canonicalized, leading to inconsistencies in
3181 ** VALUES tranformer lost derived type.
3183 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3184 * fixed a bootstrapping bug: the build process no longer assumes
3185 that the various BOOLE-related constants have the same value in
3186 host and target lisps. (noted by Paul Dietz' test suite on an
3187 SBCL binary built from CLISP)
3188 * The system can now be dynamically linked on the MIPS platform,
3189 which enables dynamic loading of foreign code from Lisp. (thanks
3190 to Ralf Baechle for discussions on the MIPS ABI)
3191 * The system now records debugging information for its own source
3192 files in a filesystem-position-independent manner, relative to
3193 the "SYS" logical host.
3194 * fixed a compiler bug: MV-LET convertion did not check references
3195 to the "max args" entry point. (reported by Brian Downing)
3196 * tweaked disassembly notes to be less confident about proclaiming
3197 some instruction as an LRA. (thanks to Brian Downing)
3198 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3199 now each have their own history, command character, and other
3200 characteristics. (thanks to David Lichteblau)
3201 * fixed some bugs revealed by Paul Dietz' test suite:
3202 ** compiler failure in compiling LOGAND expressions including a
3204 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3205 shift greater than 32.
3206 ** FLUSH-DEST did not mark blocks for type check regeneration.
3207 ** HANDLER-CASE failed to accept declarations in handler clauses
3208 in some circumstances.
3210 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3211 * New code in contrib/sb-introspect (still probably not entirely
3212 stable yet) provides some support for smart Lisp development
3213 environments like SLIME.
3214 * The conditions signalled for errors occurring when loading .fasl
3215 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3216 in a way which should help ASDF recover gracefully.
3217 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3218 stuff has been cleaned up. If you code contrib/ stuff, this might
3219 affect you, and you can look at contrib/README, contrib/STANDARDS,
3220 and/or the 0.8.4.27 diff to check.
3221 * In full calls the compiler now does not generate checks for declared
3222 argument types for all arguments.
3223 * various threading fixes
3224 ** and some experimental patches which didn't make it into
3225 the main tree for this release, but which are shipped in
3226 contrib/experimental-thread.patch as a possible fix for some
3227 failures (deadlock, spinning...) in GC-intensive multithreaded
3229 * fixed PPC build problem (source code incompatibility of different
3230 library versions): added offsetof() hackery which attempts to divine
3231 where glibc maintainers put uc_mcontext today
3232 * fixed bug 282: compiler does not trust type assertions while passing
3233 arguments to a full call.
3234 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3235 &OPTIONAL VALUES type parameter.
3236 * fix bug 214: algorithm for noting rejected templates is now more
3237 similar to that of template seletion. (also reported by rydis on
3239 * fixed bug 141b: printing backquoted information readably and prettily
3240 inserts a space where necessary.
3241 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3242 (CHARACTER 10) are now reported as errors, rather than propagated
3243 as unknown types. (reported by piso on #lisp)
3244 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3245 with values NIL and :ERROR. (thanks to Milan Zamazal)
3246 * fixed bug 191c: CLOS now does proper keyword argument checking as
3247 described in CLHS 7.6.5 and 7.6.5.1.
3248 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3249 longer raise an error; further, using a list as a for-as-arithmetic
3250 counter now raises a meaningful error.
3251 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3252 now understood by sequence creation functions such as MAKE-SEQUENCE
3254 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3255 a STRING-INPUT-STREAM.
3256 * compiler enhancement: SIGNUM is now better able to derive the type
3258 * type declarations inside WITH-SLOTS are checked. (reported by
3260 * fixed some bugs revealed by Paul Dietz' test suite:
3261 ** incorrect optimization of TRUNCATE for a positive first
3262 argument and negative second.
3263 ** compiler failure in let-convertion during flushing dead code.
3264 ** compiler failure while deriving type of TRUNCATE on an
3265 interval, containing 0.
3266 ** ASH of a negative bignum by a negative bignum count now returns
3268 ** intersection of CONS types now canonicalizes properly, fixing
3269 inconsistencies in SUBTYPEP.
3271 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3272 * incompatible change: The --disable-debugger command line
3273 option now clobbers the debugger at a more fundamental
3274 level, by redefining #'INVOKE-DEBUGGER instead of by
3275 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3276 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3277 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3278 enter the debugger REPL and then suffer recursive errors
3279 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3280 while under the new system, BREAK in --disable-debugger mode
3281 terminates the system just as an unhandled error would.
3282 * fixed compiler performance when processing loops with a step >1;
3283 * bug fix: DOCUMENTATION now retrieves generic function
3284 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3285 support has been systematized, and now supports the methods
3286 specified by ANSI, along with a default method and a method for
3287 slot documentation. (reported by Nathan Froyd)
3288 * bug fix: effective methods associated with a generic function are
3289 no longer cached over a change of that generic function's method
3290 combination. (reported by Andreas Fuchs)
3291 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3292 names a non-existent directory. (thanks to Andreas Fuchs)
3293 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3294 the PPC platform, lead to stack corruption; this has been fixed.
3295 (reported by Rainer Joswig)
3296 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3297 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3298 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3299 arithmetic in general, is now much more reliable on the PPC
3301 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3302 platform now returns the right answer.
3303 * optimization: restored some effective method precomputation in
3304 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3305 precomputation is now tunable.
3306 * optimization: compiler-internal data structure use has been
3307 reviewed, and changes have been made that should improve the
3308 performance of the compiler by about 20%.
3309 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3310 simple-base-strings and simple-bit-vectors is improved.
3311 * optimization: the optimization of 32-bit logical and arithmetic
3312 functions introduced in version 0.8.3 on the x86 has been
3313 implemented on the mips, ppc and sparc platforms; an
3314 implementation of the same facility, but for 64-bit arithmetic,
3315 has been added for the alpha.
3316 * microoptimization: the compiler is better able to make use of the
3317 x86 LEA instruction for multiplication by constants.
3318 * bug fix: in some situations compiler did not report usage of
3319 generic arithmetic in (SPEED 3) policy.
3320 * bug 145b fix: compiler used wrong type specifier while converting
3321 MEMBER-types to numeric.
3322 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3324 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3325 index argument now works properly on the Alpha platform.
3326 * bug fix: floating point exception treatment on the Alpha platform
3328 * bug fix: FILE-POSITION works much better on string input and
3329 output streams. (thanks to Nikodemus Siivola)
3330 * bug fix: many threading/garbage collection symptoms sorted.
3331 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3332 might be pseudo-atomic.
3333 * internal change: Stopping for GC is now done with signals not
3334 ptrace. GC is now done in whichever thread wanted it, instead of
3336 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3338 * bug fix: result form in DO is not contained in the implicit
3340 * incompatible change: ICR structure is changed; the value part of
3341 CONTINUATION is now called LVAR; corresponding functions are
3342 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3343 * added type deriver for ISQRT (thanks to Robert E. Brown).
3344 * bug fix: better support for loading from the command line when an
3345 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3347 * fixed some bugs revealed by Paul Dietz' test suite:
3348 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3349 ** ROUND and FROUND now give the right answer when given very
3350 small float arguments.
3351 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3353 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3354 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3355 ** LCM should return a non-negative integer.
3356 ** PARSE-INTEGER returned the index of a terminator instead of the
3357 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3358 ** PARSE-INTEGER returned an incorrect index being applied to a
3360 ** LCM with two arguments of 0 returns 0 rather than signalling
3362 ** unsigned addition of a 32-bit constant with the high bit set no
3363 longer causes an internal compiler error on the x86.
3364 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3365 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3366 with negative last argument.
3367 ** byte specifiers with zero size and position no longer cause
3368 an error during type derivation.
3369 ** bignum multiplication on the Alpha platform now returns the
3371 * porting: The system now builds on SuSE AMD64, although it still
3372 generates a 32-bit binary.
3373 * .fasl file incompatibility: The fasl file version number has
3374 been incremented (because of the changes to internal compiler
3375 data structures referred to above).
3377 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3378 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3379 more accurately, on the Darwin kernel running on PowerPC hardware.
3380 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3381 * Compiler code deletion notes now signal a condition of type
3382 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3383 an associated MUFFLE-WARNING restart.
3384 * The compiler now performs limited argument count validation of
3385 constant format strings in FORMAT, and where appropriate in ERROR,
3386 CERROR and WARN. (thanks to Gerd Moellmann)
3387 * New ASDF-INSTALL contrib can be used for automatic download and
3388 installation of third-party Lisp code from CCLAN or other sites
3390 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3391 which forces another thread to execute a function supplied by the
3393 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3394 now accept and act upon their :ELEMENT-TYPE keyword argument.
3395 (reported by Martin Atzmueller, Edi Weitz)
3396 * bug fix: FILE-POSITION now accepts position designators up to
3397 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3398 is the greater. (thanks to Patrik Nordebo)
3399 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3400 Kalle Olavi Niemitalo)
3401 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3402 printable. (reported by Eric Marsden)
3403 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3404 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3405 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3406 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3407 (thanks to Stig Sandoe)
3408 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3409 UNREAD-CHAR now correctly includes the unread character in the
3410 target sequence. (thanks to Gerd Moellmann)
3411 * bug fix in threaded builds: the system can now be suspended and
3412 resumed by shell job control with minimal disruption.
3413 * bug fixes in times and timezones >2038AD
3414 * better handling of "where is GNU make?" problem in build scripts
3415 (thanks to Nikodemus Siivola)
3416 * new optimization: inside a named function any reference to a
3417 function with the same name is considered to be a self-reference;
3418 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3419 optimization quality.
3420 * new optimization on x86: logical functions and + now have
3421 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3422 used when the result is truncated to 32 bits.
3423 * VALUES declaration is partially enabled.
3424 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3425 * fixed some bugs revealed by Paul Dietz' test suite:
3426 ** The system now obeys the constraint imposed by
3427 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3428 types form a lattice under type intersection.
3429 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3430 ** ASSOC now ignores NIL elements in an alist.
3431 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3432 and (1+ MOST-POSITIVE-FIXNUM) answers.
3433 ** The addition of a method with invalid qualifiers to a generic
3434 function does not cause an error to be signalled immediately;
3435 a warning is signalled, and the error is generated only on
3436 calling the generic function.
3437 * changed .fasl file version number, in part to add type codes for
3438 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3439 obscure ANSI requirements
3441 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3442 * fixed bug 148: failure to inline-expand a local function left
3443 garbage, confusing the compiler.
3444 * fixed bugs 3cd: structure slot readers perform type check if the
3445 slot can have an invalid value (i.e. it is either not initialized
3446 or can be written with a less specific slot writer).
3447 * bug fix: the compiler now traps array references to elements off
3448 the end of an array; previously, the bounds checking in some
3449 circumstances could go off-by-one.
3450 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3452 * type declarations for array element types now obey the description
3453 on the CLHS page "Declaration TYPE", as per discussions on
3454 sbcl-help around 2003-05-08. This means that a declaration
3455 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3456 declaration, all references to BAR will be asserted or assumed
3457 (with THE, so dependent on compiler policy) to involve objects of
3458 type FOO. Note that no such declaration is implied in
3459 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3460 * declared types of functions from the "Conditions"
3461 chapter. (reported by Paul Dietz)
3462 * bug fix: CERROR accepts a function as its first argument.
3463 * bug fix: NTH an NTHCDR accept a bignum as index
3464 arguments. (reported by Adam Warner)
3465 * optimization: character compare routines now optimize comparing
3466 against a constant character. (reported by Gilbert Baumann)
3467 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3468 argument now works properly on the MIPS platform.
3469 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3470 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3471 declared to have a functional type, does not cause an error
3473 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3474 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3475 * fixed bug: if last continuation of a deleted block has a
3476 destination, this destination should be deleted too. (reported by
3478 * fixed a bug in the bootstrap process: the host compiler's values
3479 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3480 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3481 test case from Patrik Nordebo)
3482 * improved the ability of the disassembler on the PPC platform to
3483 provide helpful disassembly notes.
3484 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3485 the class in more cases than previously.
3486 * bug fix: FILE-POSITION now understands :START and :END for
3487 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3488 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3489 8) data. (thanks to David Lichteblau)
3490 * bug fix: it is possible to add a method to a generic function
3491 without lambda list.
3492 * bug fix: reader failed to signal END-OF-FILE inside an
3493 object representation. (reported by Nikodemus Siivola)
3494 * fixed some bugs revealed by Paul Dietz' test suite:
3495 ** LAST and [N]BUTLAST should accept a bignum.
3496 ** condition slot accessors are methods.
3497 ** (VECTOR NIL) is a subtype of STRING.
3499 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3500 * minor incompatible change: some nonsensical specialized lambda
3501 lists (used in DEFMETHOD) which were previously ignored now signal
3503 * minor incompatible change: the system is now aware of the types of
3504 variables in the COMMON-LISP package, and will signal errors for
3505 most violations of these type constraints (where previously they
3506 were silently accepted).
3507 * minor incompatible change: COMPILE-FILE now uses the freedom
3508 afforded (ANSI 3.2.2.3) to use derived function types for
3509 functions defined in the same file. This also permits the system
3510 to warn on static type mismatches and function
3511 redefinition. (Currently it does not work with high DEBUG level.)
3512 * minor incompatible change: VALUES declaration is disabled.
3513 * When issuing notes, the compiler now signals a condition of type
3514 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3515 restart for use in user handlers. It is expected that the
3516 COMPILER-NOTE condition will eventually become a condition
3517 supertype to a hierarchy of note types, which will then be
3518 handleable in a similar fashion. However, at the moment, no such
3519 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3520 but it's an implementation detail, not a classification for the
3522 * Changes in type checking closed the following bugs:
3523 ** type checking of unused values (192b, 194d, 203);
3524 ** template selection based on unsafe type assertions (192c, 236);
3525 ** type checking in branches (194bc).
3526 * A short form of VALUES type specifier has ANSI meaning (it has
3527 increased the number of situations when SBCL cannot perform type
3529 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3530 keywords or constants is permissible.
3531 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3532 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3533 classes. (thanks to Antonio Martinez)
3534 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3535 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3536 argument to a pretty-print stream. Instead, it leaves any such
3537 operations to DESCRIBE-OBJECT methods.
3538 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3540 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3541 lambda lists. (thanks to David Lichteblau)
3542 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3543 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3544 (thanks to Gerd Moellmann)
3545 * fixed bug 246: increased compilation speed of long
3546 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3548 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3550 * DEFCONSTANT now throws a condition of type
3551 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3552 constant to a non-EQL value; CONTINUE and ABORT restarts
3553 respectively change and preserve the value.
3554 * fixed bug 63: The code walker, part of the implementation of CLOS,
3555 is now better at handling symbol macros.
3556 * bug fix: There is no longer an internal implementation type named
3557 CL:LENGTH. (reported by Raymond Toy)
3558 * bug fix: In macro-like defining macros/special operators the
3559 implicit block does not enclose the lambda list.
3560 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3561 enclosed in parentheses) are not suitable as type specifiers, and
3562 their use properly signals an error now.
3563 * bug fix: An argument count mismatch for a type specifier in code
3564 being compiled no longer causes an unhandled error at compile
3565 time, but signals a compile-time warning.
3566 * fixed simple vector readable printing
3567 * bug fix: DESCRIBE takes more care over whether the class
3568 precedence list slot of a class is bound before accessing it.
3569 (reported by Markus Krummenacker)
3570 * bug fix: FORMATTER can successfully compile pretty-printer format
3571 strings which use variants of the ~* directive inside.
3572 * bug fix: SEARCH now applies its TEST predicate to the elements of
3573 the arguments in the correct order. (thanks to Wolfhard Buss)
3574 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3575 in type inference. (thanks to Robert E. Brown)
3576 * bug fix: Reading in symbols with an explicit package name of ""
3577 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3578 * fixed some bugs revealed by Paul Dietz' test suite:
3579 ** NIL is now allowed as a structure slot name.
3580 ** Arbitrary numbers, not just REALs, are allowed in certain
3581 circumstances in LOOP for-as-arithmetic clauses.
3582 ** Multiple class redefinitions before slot access no longer
3583 causes a type error.
3584 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3585 association between the name and a class.
3586 ** Generic functions with non-standard method-combination and over
3587 five methods all of which return constants no longer return NIL
3588 after the first few invocations. (thanks to Gerd Moellmann)
3589 ** CALL-NEXT-METHOD with no arguments now passes the original
3590 values of the arguments, even in the presence of assignment.
3591 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3593 ** DISASSEMBLE works with closures and funcallable instances.
3594 ** ADD-METHOD now returns the generic function, not the new method.
3595 ** FIND-METHOD signals an error if the lengths of the specializers
3596 is incompatible with the generic function, even if the ERRORP
3598 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3599 which its argument is a member.
3600 ** DEFCLASS only redefines the class named by its class-name
3601 argument if that name is the proper name of the class;
3602 otherwise, it creates a new class.
3603 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3604 of the UNBOUND-SLOT condition to the name of the slot.
3605 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3606 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3607 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3608 SLOT-MAKUNBOUND in the specified fashion.
3610 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3611 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3612 cross-compilation host. As a consequence, we can now bootstrap our
3613 way up to SBCL starting with a bare gcc toolchain and human-readable
3614 source code (first the source to CLISP, then the source to SBCL).
3615 * A contributed module containing a partial implementation of the
3616 simple-streams interface has been included. (thanks to Rudi
3618 * A contributed module implementing the RFC1321 Message Digest
3619 Algorithm, known as MD5, has been included.
3620 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3621 no longer has any effect, as the code controlled by this feature
3622 has been deleted. (As far as we know, no-one has ever built using
3623 this feature, and its semantics were confused in any case).
3624 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3625 work on conditions (as required by the ANSI specification),
3626 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3627 expected behaviour on conditions. Users should note, however,
3628 that such behaviour is not required by the ANSI specification,
3629 and so use of this behaviour may render their code unportable.
3630 * fixed some bugs revealed by Paul Dietz' test suite:
3631 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3633 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3634 ** SXHASH on condition objects no longer returns NIL.
3635 ** :ALLOCATION :CLASS slots are better treated; their values are
3636 updated on class redefinition, and initforms inherited from
3637 superclasses are applied.
3638 ** REMOVE-METHOD returns its generic function argument even when
3639 no method was removed.
3640 ** SHARED-INITIALIZE now initializes the values of the requested
3641 slots, including those with :ALLOCATION :CLASS.
3642 ** ALLOCATE-INSTANCE now works on structure classes defined via
3643 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3645 ** SLOT-EXISTS-P now works on conditions, as well as structures
3647 ** MAKE-LOAD-FORM now has the required methods on
3648 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3649 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3650 keyword, and now implements the SLOT-NAMES argument.
3651 ** methods with &OPTIONAL arguments no longer allow too many
3652 arguments to be passed in the call without error.
3653 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3654 option is consistent with the required arguments of the generic
3655 function lambda list.
3656 * bug fix: REQUIRE accepts a string designator. (Thanks to
3658 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3659 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3660 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3661 * bug fix: The compiler now checks for duplicated variables in macro
3663 * bug fix: SETQ on globals returns the correct value.
3664 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3665 not a COMPILER-ERROR (followed by some other strange error on
3666 choosing the CONTINUE restart).
3667 * bug fix: make.sh and friends are now more consistent in the way that
3668 they look for GNU "make".
3670 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3671 * experimental native threads support (on x86 Linux >=2.4 only).
3672 This is not compiled in by default: you need to add :SB-THREAD to
3673 the target features. See the "Beyond ANSI" chapter of the manual
3675 * fix for longstanding nonANSIism: The old distinction between
3676 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3677 The return value from CL:FIND-CLASS is now a CLOS class, and
3678 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3679 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3680 * An interface to the MetaObject Protocol, as described in Kiczales,
3681 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3682 MIT Press, 1991, is available from the SB-MOP package.
3683 * incompatible change: the SB-PCL package should now be considered
3684 a private implementation detail, and no longer a semi-private MOP
3686 * minor incompatible change: due to rearrangement for threads, the
3687 control stack and binding stack are now allocated at arbitrary
3688 addresses instead of being hardcoded per-port. Users affected by
3689 this probably have to be doing advanced things with shared
3690 libraries, and will know who they are.
3691 * minor incompatible change: Previously, all --eval forms used were
3692 processed with READ before any of them were processed with EVAL.
3693 Now each --eval form is processed with both READ and EVAL before
3694 the next --eval form is processed. (Thus package operations like
3695 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3696 work as the user might reasonably expect.)
3697 * minor incompatible change: *STANDARD-INPUT* is now only an
3698 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3700 * minor incompatible change: Y-OR-N-P is now character-oriented,
3701 not line oriented. Also, YES-OR-NO-P now works without errors.
3702 (thanks to Antonio Martinez)
3703 * sb-aclrepl module improvements: an integrated inspector, added
3704 repl features, and a bug fix to :trace command.
3705 * Known functions, which cannot be open coded by the backend, are
3706 considered to be able to check types of their arguments. (fixing
3707 a bug report by Nathan J. Froyd)
3708 * fixed a bug in computing method discriminating functions: It is
3709 now possible to define methods specialized on classes which have
3710 forward-referenced superclasses. (thanks to Gerd Moellmann)
3711 * fixed evaluation order in optional entries (reported by Gilbert
3713 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3714 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3715 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3716 required-by-AMOP NAME argument, as well as CLASS and
3717 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3718 * fixed bug 20: DEFMETHOD can define methods using names that are
3719 not the proper names of classes to designate class specializers.
3720 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3721 Unix file descriptors, instead of blowing up. (thanks to Antonio
3723 * Garbage collection refactoring: user-visible change is that a
3724 call to the GC function during WITHOUT-GCING will not do garbage
3725 collection until the end of the WITHOUT-GCING. If you were doing
3726 this you were probably losing anyway.
3727 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3728 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3729 TYPEP the latter but not the former.
3730 * The compiler issues a full WARNING for calls to undefined functions
3731 with names from the CL package.
3732 * MAP-INTO for a vector destination is open coded. (reported by
3733 Brian Downing on c.l.l)
3734 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3735 documentation string.
3736 * fixed some bugs revealed by Paul Dietz' test suite:
3737 ** COPY-ALIST now signals an error if its argument is a dotted
3739 ** Condition slots are now accessed more correctly in the presence
3740 of multiple initargs for a given slot.
3741 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3742 exclude restarts of the same name associated with a different
3744 ** DEFCLASS of forward-referenced classes with another
3745 forward-referenced class in the superclasses list no longer
3747 ** Condition slots are now initialized once each, not multiple
3748 times. (thanks to Gerd Moellmann)
3749 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3751 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3752 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3753 arguments contain duplicated elements.
3754 ** RESTART-CASE understands local macros.
3755 ** RESTART-CASE associates exactly its own restarts with a condition.
3756 ** ENDP in safe mode checks its argument to be of type LIST.
3757 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3758 in question is unbound.
3759 ** Optimized MAKE-INSTANCE functions no longer cause internal
3760 assertion failures in the presence of duplicate initargs.
3761 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3762 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3763 propagated even in the ctor optimized implementation of
3765 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3767 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3768 * a better implementation of SXHASH on (simple) bit vectors,
3769 measured both in execution speed and in distribution of results
3770 over the positive fixnums, has been installed. Likewise, a better
3771 implementation of EQUAL for simple bit vectors is now available.
3772 * fixed CEILING optimization for a divisor of form 2^k.
3773 * fixed bug 240 (emitting extra style warnings "using the lexical
3774 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3775 by Antonio Martinez)
3776 * fixed SXHASH, giving different results for NIL depending on type
3777 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3778 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3779 variable. (found by Rolf Wester)
3780 * SBCL does not ignore type declarations for special
3781 variables. (reported by rif on c.l.l 2003-03-05)
3782 * some bug fixes in contrib/sb-aclrepl/
3783 * fixed some bugs revealed by Paul Dietz' test suite:
3784 ** a bug in the CONS type specifier, whereby the CAR and CDR
3785 types got intertwined, has been fixed;
3786 ** the type system is now able to reason about the interaction
3787 between INTEGER and RATIO types more completely;
3788 ** APPEND, [N]REVERSE and NRECONC check that those their
3789 arguments, which must be proper lists, are really so;
3790 ** An array specialized to be unable to hold elements has been
3791 implemented, as required -- yes, really -- by ANSI;
3792 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3793 on malformed property lists;
3795 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3796 * incompatible packaging change: in line with Unix convention,
3797 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3798 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3799 * REQUIRE and PROVIDE are now optionally capable of doing something
3800 useful. See the documentation string for REQUIRE.
3801 * infrastructure for a managed SBCL contrib system: contributed
3802 modules in this release include:
3803 ** the ASDF system definition facility;
3804 ** an interface to the BSD Sockets API;
3805 ** an ACL-like convenience interface to the repl;
3806 (thanks to Kevin Rosenberg)
3807 ** an implementation of ROTATE-BYTE, with efficient implementation
3809 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3810 gives a closer approximation to the right answer than previously.
3811 (thanks to Raymond Toy)
3812 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3813 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3814 optional environment arguments, as required by ANSI.
3815 * fixed bugs in other functions taking environment objects, allowing
3816 calls with an explicit NIL environment argument to be compiled
3818 * fixed bug 228: primary return values from
3819 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3820 COMPILE or FUNCTION.
3821 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3822 :TYPE will no longer signal errors on innocuous objects.
3823 * fixed bug 231b: SETQ is better at respecting type declarations in
3824 the lexical environment.
3825 * fixed a bug in DEFCLASS: classes named by symbols with no or
3826 unprintable packages can now be defined.
3827 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3828 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3829 * fixed compiler failure related to checking types of functions.
3830 (reported by Robert E. Brown)
3831 * the compiler is now much more consistent in its error-checking
3832 treatment of bounding index arguments to sequence functions: in
3833 (SAFETY 3) code, errors will be signalled in almost all cases if
3834 invalid sequence bounding indices are passed to functions defined
3835 by ANSI to operate on sequences.
3836 * fixed a bug in the build procedure: documentation of SBCL-specific
3837 packages is now preserved and available in the final Lisp image.
3838 * lifted FDEFINITION lookup out of loops in the implementation of
3839 many list operations. (thanks to Robert E. Brown)
3840 * fixed a bug in the reader: the #n# reader macro now works for
3841 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3842 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3843 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3844 E. Brown and Tony Martinez respectively)
3845 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3846 SLOT-BOUNDP: in particular, it is now able to optimize them much
3847 better, and is now not vulnerable to having packages renamed.
3848 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3849 always called when a slot is not present in an instance. (thanks
3851 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3852 longer signal an error on unreading a character following EOF on
3853 the previous constituent stream. (thanks to Tony Martinez)
3854 * fixed some bugs revealed by Paul Dietz' test suite:
3855 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3856 not just nonnegative fixnums;
3857 ** the logical bit-array operators such as BIT-AND now accept an
3858 explicit NIL for their "opt-arg" argument (to indicate a
3859 freshly-consed result bit-array);
3860 ** ELT now signals an error on an invalid sequence index in safe
3862 ** the type system is now cleverer about negations of numeric
3863 types, and consequently understands the BIGNUM and RATIO types
3865 ** the type system is now cleverer about the interaction between
3866 INTEGER and RATIO types: while bugs still remain, many more
3867 cases are accurately computed;
3868 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3869 if it is in the last clause;
3870 ** CONSTANTLY now correctly returns a side-effect-free function in
3872 ** DECLARE is no longer treated as a special-operator; in
3873 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3874 * incremented fasl file version number due to the change in the
3875 DEFSTRUCT-SLOT-DESCRIPTION structure.
3877 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3878 * minor incompatible change: code processed by the "interpreter" or
3879 EVAL now has a compilation optimization policy of (DEBUG 2)
3880 (changed from (DEBUG 1)) to improve debuggability of interactive
3881 development, and to allow the use of the debug RETURN command in
3883 * an experimental implementation of the RETURN command for the
3884 debugger has been included. (thanks to Frederik Kuivinen)
3885 * fixed bug 62: constraints were not propagated into a loop.
3886 * fixed bug in embedded calls of SORT (reported and investigated by
3888 * fixed some bugs revealed by Paul Dietz' test suite:
3889 ** printing and reading of arrays with some dimensions having
3890 length 0 (thanks to Gerd Moellmann);
3891 ** BOA constructor with &AUX argument without a default value does
3892 not cause a type error;
3893 ** CONSTANTP now returns true for all self-evaluating objects.
3895 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3896 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3897 accessors that are related by inheritance, as specified in the
3898 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3899 Valtteri Vuorikoski)
3900 * The compiler is now able to inline functions that were defined in
3901 a complex lexical environment (e.g. inside a MACROLET).
3902 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3904 * Support for the upcoming FreeBSD-5.0 release has been included.
3905 (thanks to Dag-Erling Smorgrav)
3906 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3907 effect when it is not in a toplevel context.
3908 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3909 stand a better chance of being correct. (thanks to Gerd
3911 * fixed bug in COERCE, which now signals an error on coercing a
3912 rational to a bounded real type which excludes the expected
3914 * The compiler is now able to derive types more accurately from the
3915 COERCE and COMPILE functions.
3916 * fixed bug 223: functional binding is considered to be constant
3917 only for symbols in the CL package.
3918 * fixed bug 231: SETQ did not check the type of a variable being set
3919 (reported by Robert E. Brown)
3920 * A new optimization for MAKE-INSTANCE has been included, fixing
3921 various bugs (including relating to :ALLOCATION :CLASS slots and
3922 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3924 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3925 ** As required by ANSI, LOOP now disallows anonymous collection
3926 clauses such as COLLECT I in conjunction with aggregate boolean
3927 clauses such as THEREIS (= I 1);
3928 ** LOOP now signals an error when any variable is reused in the
3929 same loop (including the potentially useful construct analogous
3930 to WITH A = 1 WITH A = (1+ A);
3931 ** IT is only a special loop symbol within the first clause of a
3932 conditional loop clause;
3933 ** LOOP with a typed iteration variable over a hashtable now
3934 signals a type error iff it should.
3935 * fixed some other bugs revealed by Paul Dietz' test suite:
3936 ** FILE-STREAM now names the class previously known as FD-STREAM;
3937 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3938 argument) no longer signals an error;
3939 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3940 of the slot symbol, rather than using the current package
3941 ((:CONC-NAME "") continues to intern the slot's name in the
3943 * incremented fasl file version number, because of the incompatible
3944 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3945 of the new implementation of DEFINE-COMPILER-MACRO.
3947 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3948 * Support for building SBCL for MIPS platforms running in
3949 little-endian mode has now been checked in, and basic
3950 functionality on said platforms verified.
3951 * minor incompatible change: PCL now records the pathname of a file
3952 in which methods and the like are defined, rather than its
3954 * minor incompatible change: TRUENAME now considers the truename of
3955 a file naming a directory to be the pathname with :DIRECTORY
3956 component indicating that directory.
3957 * minor incompatible change: a NAMED clause in the extended form of
3958 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3959 reason for the previous behaviour is unclear.
3960 * more systematization and improvement of CLOS and MOP conformance
3961 in PCL (thanks to Gerd Moellman and Pierre Mai):
3962 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3964 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3965 primary methods with no specializers;
3966 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3968 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3969 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3970 FORWARD-REFERENCED-CLASSes; error reporting on
3971 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3973 ** SXHASH on CLOS instances now uses a slot internal to the
3974 instance to return different numbers on distinct instances,
3975 while preserving the same return value through invocations of
3977 ** DEFMETHOD signals errors when methods with longer incongruent
3978 lambda lists are added to generic functions;
3979 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3980 CLASS, as specified in AMOP;
3981 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3982 on the order returned by the primary method for classes of
3983 class STANDARD-CLASS;
3984 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3985 * fixed some bugs shown by Paul Dietz' test suite:
3986 ** DOLIST puts its body in TAGBODY;
3987 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3989 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3990 value producing form;
3991 ** if more variables are given to PROGV than values, extra
3992 variables are bound and made to have no value;
3993 ** NSUBSTITUTE on list arguments gets the right answer with
3995 ** ELT signals an error of type TYPE-ERROR when the index argument
3996 is not a valid sequence index;
3997 ** LOOP signals (at macroexpansion time) an error of type
3998 PROGRAM-ERROR when duplicate variable names are found;
3999 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4000 ** FUNCALL of special-operators now cause an error of type
4002 ** PSETQ now works as required in the presence of side-effecting
4003 symbol-macro places;
4004 ** NCONC accepts any object as its last argument;
4005 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4007 ** loop-for-as-package does not require a package to be explicitely
4009 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4011 * fixed bug 166: compiler preserves "there is a way to go"
4012 invariant when deleting code.
4013 * fixed bug 172: macro lambda lists with required arguments after
4014 &REST arguments now cause an error to be signalled. (thanks to
4016 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4017 bug. (thanks to Matthew Danish)
4018 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4020 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4021 arguments are lexically rebound. (thanks to Gerd Moellmann and
4023 * fixed bug 194: error messages are now more informative when there
4024 is no primary method applicable in a call to a generic
4025 function. (thanks to Gerd Moellmann)
4026 * fixed bug in command line argument checking (thanks to Julian
4028 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4029 (thanks to Matthew Danish)
4030 * incremented fasl file version number, because of the
4031 SXHASH-related changes in the layout of CLOS data structures
4033 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4034 * minor incompatible change: The runtime (the Unix executable named
4035 "sbcl") is now much pickier about the .core files it will load.
4036 Essentially it now requires .core files to descend from the same
4037 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4038 as the runtime does. (The intent is to prevent the crashes which
4039 can occur, and which can even be reported as mysterious failures,
4040 when people patch the sources or change the build parameters
4041 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4042 sbcl and .core files.)
4043 * fixed bug: VALUES-LIST is no longer optimized away.
4044 * fixed bug 142: The FFI conversion of C string values to Lisp
4045 string values no longer conses excessively. (thanks to Nathan
4046 Froyd porting Raymond Toy's fix to CMU CL)
4047 * began to systematize and improve MOP conformance in PCL (thanks to
4048 Nathan Froyd, Gerd Moellman and Pierre Mai):
4049 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4051 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4052 ** FINALIZE-INHERITANCE is now called on class finalization;
4053 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4054 argument precedence order.
4055 * fixed bug 202: The compiler no longer fails on functions whose
4056 derived types contradict their declared type.
4057 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4058 so it can be non-toplevel.
4059 * The fasl file version number has changed (because of the new
4060 implementation of DEFMACRO).
4061 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4062 safe code, that any length requirement by their type-specifier
4063 argument is valid. The exceptions to this are described in bug
4065 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4066 functions now check the types of their inputs as required by ANSI.
4067 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4068 introduced symbol is DECLAREd to be SPECIAL.
4069 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4070 * fixed bug: :COUNT argument to sequence functions may be negative
4071 * fixed bug: body of DO-SYMBOLS may contain declarations
4072 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4073 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4074 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4075 symbol macro only once
4076 * fixed printing of call frame when argument list is unavailable
4077 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4078 * compiler no longer signals WARNING on unknown keyword
4081 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4082 * A beta-quality port to the mips architecture running Linux,
4083 based on the old CMUCL backend, has been made. It has been tested
4084 on a big-endian kernel, and works sufficiently well to be able to
4085 rebuild itself; it has not been tested in little-endian mode.
4086 * fixed an inconsistency between gencgc.c and purify.c which made
4087 dumping/loading .core files unreliable
4088 * fixed bug 120a: The compiler now deals correctly with IFs where
4089 the consequent is the same as the alternative, instead of
4090 misderiving the return type. (thanks to Alexey Dejneka)
4091 * fixed bug 113: Logical pathnames are now dumpable (the logical
4092 host is resolved at load-time, throwing an error if it is not
4094 * fixed bug 174: FORMAT's error message is slightly clearer when a
4095 non-printing character is used in a format directive.
4096 * fixed several bugs in compiler checking of type declarations, i.e.
4097 violations of the Python "declarations are assertions" principle
4098 (thanks to Alexey Dejneka)
4099 * fixed several bugs in PCL's error checking (thanks to Gerd
4101 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4103 * fixed bug in compilation of functions as first class values
4104 (thanks to Antonio Martinez-Shotton)
4105 * The compiler's handling TYPE-ERRORs which it can prove will
4106 inevitably happen at runtime has been cleaned up and corrected
4107 in several ways. (thanks to Alexey Dejneka)
4108 * improved argument type checking for various basic arithmetic
4109 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4110 lavished on them in the past that they can be compiled in many
4111 ways in different special cases
4112 * fixed bug 181: compiler checks validity of user supplied type
4114 * cleaned up code flushing in optimization: Function calls which
4115 should signal errors for safety purposes (e.g. which ANSI says
4116 should signal errors when their arguments are of incorrect type)
4117 are no longer optimized away.
4118 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4119 * incremented fasl file version number, because changes in the
4120 implementation of sequence functions like COERCE caused
4121 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4122 in old inline expansions) to become undefined. (Actually these
4123 changes were later undone, so we might very well be binary
4124 compatible with 0.7.7 after all, but leaving the version number
4125 incremented seemed like the simplest and most conservative
4128 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4129 * An alpha-quality port to the parisc architecture running Linux,
4130 based on the old CMUCL backend, has been made. This, even more so
4131 than the other backends, should be considered still a work in
4132 progress; known problems include that the Linux kernel in 64-bit
4133 mode does not propagate the correct sigcontext structure to
4134 userspace, and consequently SBCL on a parisc64 kernel will not
4136 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4137 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4138 suppressed.) Also now that the compiler is looking at declarations
4139 in the environment, it checks optimization declarations as well,
4140 and suppresses inlining when (> DEBUG SPEED).
4141 * More fixes have been made to treatment of floating point exception
4142 treatment and other Unix signals. In particular, floating point
4143 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4144 * The detection and handling of control stack exhaustion (infinite
4145 or very deeply nested recursion) has changed. Stack exhaustion
4146 detection is now done by write-protecting pages at the OS level
4147 and applies at all optimization settings; when found, a
4148 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4149 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4150 be caught using IGNORE-ERRORS.
4151 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4152 correctly when transforming recursive LABELS functions to LETs.
4153 (thanks to Alexey Dejneka)
4154 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4155 that are names of constants or global variables.
4156 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4157 alien routines with docstrings.
4158 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4159 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4161 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4162 (thanks to Eric Marsden)
4163 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4164 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4165 * Bug fix: The SPARC backend can now compile functions involving
4166 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4167 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4168 to a functions expecting a PATHNAME-DESIGNATOR.
4169 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4170 lambda lists. (thanks to Alexey Dejneka)
4171 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4172 functions so that EXPORTing the name of the class doesn't cause
4173 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4174 to Antonio Martinez for reporting this)
4175 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4176 constant-folded without failing an assertion. (thanks to Einar
4177 Floystad Dorum for reporting this)
4178 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4179 types are now dealt with more correctly by the compiler.
4180 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4181 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4182 behaviour analogous to RENAME-FILE. This puts its behaviour more
4183 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4185 * The fasl file version number has changed again. (because of the
4186 bug fix involving the names of PCL MAKE-INSTANCE functions)
4188 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4189 * bug fix: Floating point exceptions are treated much more
4190 consistently on the x86/Linux and PPC/Linux platforms.
4191 * Array initialization with :INITIAL-ELEMENT is now much faster for
4192 cases when the compiler cannot open code the array creation, but
4193 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4194 array accesses have also seen a speed increase.
4195 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4196 specified. (This was at the root of some bad interactions between
4197 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4199 * bug fix: Internal error arguments for undefined functions are now
4200 computed correctly on the PPC/Linux platform.
4201 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4202 Raymond Toy's patch for CMU CL)
4203 * Support for the Solaris 9 operating environment has been included
4204 (thanks to Daniel Merritt)
4205 * A very ugly but hopefully complete draft of the missing FFI chapter
4206 of the manual has been created by reformatting the corresponding
4207 CMU CL manual chapter into (currently very ugly and incoherent)
4208 DocBook and bringing it up to date for SBCL behavior. Thus, the
4209 manual is now essentially complete, at least by my extreme
4210 once-and-only-once standards, whereby it's acceptable to refer to
4211 the doc strings of SB-EXT functions as the primary documentation.
4212 * The fasl file version number has changed again, due to cleanup of
4213 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4214 is no longer a static symbol.)
4216 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4217 * SBCL now builds with OpenMCL (version 0.12) as the
4218 cross-compilation host; also, more progress has been made toward
4219 bootstrapping under CLISP.
4220 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4222 * bug 158 fixed: The compiler can now deal with integer loop
4223 increments different from 1; fixing this turned out also to fix
4225 * bug 169 fixed: no more bogus warnings about using lexical bindings
4226 despite the presence of perfectly good SPECIAL declarations (thanks
4227 to David Lichteblau)
4228 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4229 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4230 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4232 * bug 180 fixed: Method combination specifications no longer ignore
4233 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4234 * bug fix: Structure type predicate functions now check their argument
4235 count as they should.
4236 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4237 correctly. (thanks to Pierre Mai)
4238 * minor incompatible change: The --noprogrammer option is deprecated
4239 in favor of the new --disable-debugger option, which is very similar.
4240 (The major difference is that it takes effect at a slightly different
4241 time at startup, causing handling of errors in --sysinit and
4242 --userinit files will be affected differently.) The
4243 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4244 been added to allow this functionality to be controlled from ordinary
4245 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4246 maintainers, who might want to run non-interactive scripts to
4247 build SBCL cores which will later be used interactively.)
4248 * minor incompatible change: The LOAD function no longer, when given
4249 a wild pathname to load, loads all files matching that pathname.
4250 Instead, an error of type FILE-ERROR is signalled.
4252 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4253 * bug 147 fixed: The compiler preserves its block link/count
4254 invariants more correctly now so that it doesn't crash. (thanks
4256 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4258 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4259 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4260 no-value-for-this-character as NIL (as specified by ANSI).
4261 * HOST-NAMESTRING on physical pathnames now returns a string that is
4262 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4263 (thanks to Christophe Rhodes)
4264 * The Alpha port handles icache flushing more correctly. (thanks to
4266 * More progress has been made toward bootstrapping under CLISP. (thanks
4267 to Christophe Rhodes)
4268 * The fasl file format has changed again, because dynamic loading
4269 on OpenBSD (which has non-ELF object files) motivated some cleanups
4270 in the way that foreign symbols are transformed and passed around.
4271 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4272 is no longer treated as whitespace by the reader, but instead as
4273 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4274 |A
\7fB|, instead of A as it used to.
4276 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4277 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4278 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4279 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4280 this as of 0.7.1.45, but was left out of the previous news section
4281 (thanks to Dan Barlow)
4282 * SBCL now runs on the Solaris operating system on SPARC architectures
4283 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4284 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4285 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4286 * SPARC backend cleanups, allowing builds of cores optimized for V8
4287 and V9 SPARCS, and also emission of code targeted to a particular
4288 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4290 * SBCL is closer to bootstrapping under CLISP, thanks to various
4291 fixes by Christophe Rhodes.
4292 * The fasl file format has changed again, to allow the compiler's
4293 INFO database to support symbol macros.
4294 * The user manual (in doc/) is formatted into HTML more nicely.
4295 (thanks to coreythomas)
4296 * The system is smarter about SUBTYPEP relationships, especially
4297 those involving NOT types (including types such as ATOM which are
4298 represented internally using NOT types). Thus SUBTYPEP is less
4299 likely to return (VALUES NIL NIL) in general, and in particular
4300 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4302 * The fasl file format has changed again, because the internal
4303 representation of types now includes a new slot to support the new
4304 SUBTYPEP-of-NOT-types logic.
4305 * (not a change in the main branch of SBCL, but a related prototype
4306 which can hopefully be merged into the main branch of SBCL in the
4307 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4308 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4309 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4310 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4311 dispatch macro character combinations. (thanks to Alexey Dejneka)
4312 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4313 that superficially look like logical namestrings correctly.
4314 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4316 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4317 default supplied-p) for &optional and &key arguments. (thanks to
4320 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4321 * incompatible change: The compiler is now less aggressive about
4322 tail call optimization, doing it only when (> SPACE DEBUG) or
4323 (> SPEED DEBUG). (This is an incompatible change because there are
4324 programs which relied on the old CMU-CL-style behavior to optimize
4325 away their unbounded recursion which will now die of stack overflow.)
4326 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4327 for non-GENCGC systems has been increased to 20M (since that
4328 seems much closer to the likely performance optimum for modern
4329 systems than the old 4M value was)
4330 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4331 and *DEBUG-PRINT-LEVEL*
4332 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4333 of CMU CL's support for SPARC, and various endianness and other
4334 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4335 * new syntactic sugar for the Unix command line: --load foo.bar is now
4336 an alternate notation for --eval '(load "foo.bar")'.
4338 ** The system now detects stack overflow and handles it gracefully,
4339 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4340 optimization settings. (This is a good thing in general, and
4341 its introduction in this version should be particularly timely
4342 for anyone whose code fails because of suppression of tail
4344 ** The system now hunts for the C variable "environ" in a more
4345 devious way, to avoid segfaults when the C library version differs
4346 between compile time and run time. (thanks to Christophe Rhodes)
4347 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4348 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4349 ** The compiler no longer issues bogus style warnings for undefined
4350 classes in the same source file as the DEFCLASSes which defined
4351 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4353 ** fixes in CONDITION class precedence list for undefined function
4354 errors (thanks to Alexei Dejneka)
4355 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4356 correctly. (thanks to Dan Barlow)
4357 ** portability fixes aiming at bootstrapping under CLISP (thanks
4358 to Dave McDonald and Christophe Rhodes)
4359 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4360 ** fixes in type translation and and type inference (thanks to
4362 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4363 ** various fixes in the new ports (thanks to Dan Barlow)
4364 * several changes related to debugging:
4365 ** suppression of tail recursion, as noted above
4366 ** stack overflow detection, as noted above
4367 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4368 is now the default. (For some time encapsulation has been more
4369 reliable than the breakpoint-based :ENCAPSULATE NIL
4370 implementation, at least on X86 systems; and I just noticed that
4371 encapsulation also seems closer to the spirit of the ANSI
4374 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4376 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4377 up properly again. (There was a packaging bug in 0.7.0 which
4378 left their definitions in SB-SYS::LOAD-FOREIGN and
4379 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4380 vital for most things which interface to C-level interfaces,
4381 like extensions working with sockets or databases or
4382 Perl-compatible regexes or whatever, and the need to fix
4383 this bug is the main reason that 0.7.1 was released so
4385 ** DEFGENERIC is now choosier about the methods it redefines, so that
4386 reLOADing a previously-LOADed file containing DEFGENERICs does
4387 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4388 cycle now works as it should. (thanks to Alexey Dejneka)
4389 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4390 fixed by Christophe Rhodes. (He actually submitted this patch
4391 months ago, and I delayed until after 0.7.0.)
4392 ** Bug 111 (internal compiler confusion about runtime checks on
4393 FUNCTION types) was fixed by Alexey Dejneka.
4394 * Some internal cleanups (getting rid of variables which aren't
4395 needed now that the byte interpreter is gone) caused the fasl
4396 file format number to change again.
4398 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4399 * major incompatible change: The default fasl file extension, i.e. the
4400 default extension for files produced by COMPILE-FILE, has changed
4401 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4403 ** There are many changes in the implementation of the compiler.
4404 SBCL is now essentially a compiler-only implementation of ANSI
4405 Common Lisp. EVAL still "interprets" a few special cases, but
4406 almost all the interesting cases are handled by creating
4407 a LAMBDA expression, calling COMPILE on it, then calling
4408 FUNCALL on the result.
4409 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4410 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4411 Since the code is newer, there might still be some new bugs
4412 (though not as many as before Martin Atzmueller's fixes:-). But
4413 the new code is substantially simpler and clearer, and hopefully
4414 any remaining bugs will be simpler, less fundamental, and more
4415 fixable then the bugs in the old code.
4416 ** The revised compiler is still a little unsteady on its feet.
4418 *** The debugging information it produces (particularly the names
4419 of FUNCTION objects) is sometimes much less useful than what
4420 the old compiler produced.
4421 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4422 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4423 within a MACROLET) has been temporarily weakened.
4424 ** There are new compiler optimizations for various functions:
4425 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4426 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4427 *** the math functions TRUNCATE, FLOOR, and CEILING
4428 *** the function-of-all-trades COERCE
4429 Mostly these should be transparent, but there's one
4430 potentially-annoying problem (bug 117): when the compiler
4431 inline-expands a function and does type analysis on the result,
4432 it can create control paths which have type mismatches, and
4433 when it can't prove that those control paths aren't taken,
4434 it will issue WARNINGs about the type mismatches. This is
4435 a particular problem in practice for the new sequence functions.
4436 It's not clear how this should be fixed, and for now, a
4437 workaround is given in the entry for 117 in the BUGS file.
4438 ** (Because of the interaction between the two previous items --
4439 occasional inlining problems and new inline expansions -- some
4440 of the new sequence function optimizations won't really kick in
4441 completely until debugging information, and then inlining, are
4442 straightened out in some future version.)
4443 * minor incompatible changes:
4444 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4445 DIRECTORY no longer implicitly promotes NIL slots of its
4446 pathname argument to :WILD. In particular, when you ask for the
4447 contents of a directory (which you used to be able to do without
4448 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4449 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4450 ** changes in behavior that ANSI explicitly defines to be
4451 implementation dependent:
4452 *** The new compiler-only implementation still conforms with ANSI,
4453 but acts a little different than before. Besides the obvious
4454 changes in performance tradeoffs (that the cost per form passed
4455 to EVAL has gone up, and the cost per form executed by EVAL
4456 has gone down), the behavior of the system changes a little
4457 because there are no longer any interpreted function objects.
4458 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4459 e.g. doing COMPILE on the output of interactive DEFUN is
4461 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4463 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4464 has changed from (:CL) to NIL.
4465 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4466 e.g. #\Newline and #\Tab, don't have names specified in the
4467 ANSI Common Lisp standard, is now based on their ASCII symbolic
4468 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4469 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4470 are no longer used for output.
4471 ** changes in internal implementation constants:
4472 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4473 4 million. (If your application spends a lot of time GCing and
4474 you have a lot of RAM, you might want to experiment with
4475 increasing it even more.)
4476 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4477 However, almost all old code should still continue to work without
4478 immediate update, as SB-C-CALL is now a (deprecated) nickname
4480 ** Old operator names in the style DEF-FOO are now deprecated in
4481 favor of new corresponding names DEFINE-FOO, for consistency with
4482 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4483 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4484 internal symbols, but a few supported extensions like
4485 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4486 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4487 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4488 etc. as you get deeper into recursive calls to the debugger
4489 command loop, instead of the old "5]", "5]]", "5]]]"
4490 sequence. (I was motivated to do this when squabbles between
4491 ILISP and SBCL left me very deeply nested in the debugger. In the
4492 short term, this change will probably provoke more ILISP/SBCL
4493 squabbles, but hopefully it will be an improvement in the long run.)
4494 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4495 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4496 function, since declaiming return types involving aliens is
4497 (1) annoyingly messy to do by hand and (2) vital to efficient
4498 compilation of code which calls such functions.
4499 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4500 longer reexported by the SB-EXT package. They're solely useful
4501 for alien code, so it seems more logical that you should get
4502 them from the SB-ALIEN package, not in SB-EXT.
4503 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4504 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4505 features. Instead, the code that they used to control is always
4506 built into the system.
4507 * many other bug fixes
4508 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4509 advantage of the new EVAL-WHEN stuff and to clean them up in
4510 general, and they are now more ANSI-compliant in a number of
4511 ways. Martin Atzmueller is responsible for a lot of this.
4512 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4514 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4515 *** correct ERROR type for various file operations
4516 *** some fixes for Lisp streams
4517 *** DEFMETHOD syntax checking
4518 *** changing old weird representation of debug information as
4519 strings (which, among their other deficiencies, don't transform
4520 correctly when you rename packages, and don't change their
4521 print representation when you change things like *PACKAGE*
4522 and *PRINT-LENGTH*) to symbols and lists of symbols
4523 He also made several improvements and fixed several bugs in DESCRIBE.
4524 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4526 *** misbehavior of WRITE-STRING/WRITE-LINE
4527 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4528 and several other LOOP problems as well
4529 *** DIRECTORY when similar filenames are present
4530 *** DEFGENERIC with :METHOD options
4531 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4532 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4533 *** argument ordering in FIND with :TEST option
4534 *** mishandled package designator argument in APROPOS-LIST
4535 *** various problems in the backquote readmacro
4536 *** a bug in APROPOS
4537 *** probably some others that I'm not describing very well here,
4538 since the CVS log documents them by reference to sbcl-devel
4539 messages, and the SourceForge archives aren't working well.:-(
4540 ** Dan Barlow improved the Alpha port (and is making progress on the
4541 PPC port, for those of you who think different).
4542 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4543 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4544 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4545 continues to work on the SPARC port (for those of you in a position
4546 to look down upon our little PC-compatible boxes from a great height).
4547 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4548 and uses that copy, rather than the current dynamic value, when
4549 it's trying to decide whether to truncate output. Thus e.g.
4550 (let ((*print-lines* 50))
4551 (pprint-logical-block (stream nil)
4553 (let ((*print-lines* 8))
4554 (print (aref possiblybigthings i) stream)))))
4555 should now truncate the logical block only at 50 lines, instead of
4556 often truncating it at 8 lines, as it did before.
4557 * The doc/cmucl/ directory, containing old CMU CL documentation
4558 from the time of the fork, is no longer part of the base system.
4559 SourceForge has shut down its anonymous FTP service, and with it
4560 my original plan for distributing the old CMU CL documentation
4561 there. For now, if you need these files you can download an old
4562 SBCL source release and extract them from it.
4563 * The fasl file version number changed again, for dozens of reasons,
4564 some of which are apparent above.
4566 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4567 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4568 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4569 patch, so that DISASSEMBLE output is much nicer.
4570 * The code in the SB-PROFILE package now seems reasonably stable.
4571 I still haven't decided what the final interface should look like
4572 (I'd like PROFILE to interact cleanly with TRACE, since both
4573 facilities use function encapsulation) but if you have a need
4574 for profiling now, you can probably use it successfully with
4575 the current CMU-CL-style interface.
4576 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4577 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4578 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4579 link now returns the dangling link itself, and for similar
4580 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4581 link itself. (In these cases the old code signalled an error and
4582 looped endlessly, respectively.) Thus, DIRECTORY now works even
4583 in the presence of dangling and cyclic symbolic links.
4584 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4585 is now a supported extension again, since the consensus on
4586 sbcl-devel was that it can be useful for ordinary development
4587 work, not just for debugging SBCL itself.
4588 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4589 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4590 that currently-defined functions might be redefined later with
4591 different return types.
4592 * Hash tables can be printed readably, as inspired by CMU CL code
4593 of Eric Marsden and SBCL code of Martin Atzmueller.
4594 * better error handling in CLOS method combination, thanks to
4595 Martin Atzmueller porting Pierre Mai's CMU CL patches
4596 * more overflow fixes for >16Mbyte I/O buffers
4597 * A bug in READ has been fixed, so that now a single Ctrl-D
4598 character suffices to cause end-of-file on character streams.
4599 In particular, now you only need one Ctrl-D at the command
4600 line (not two) to exit SBCL.
4601 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4603 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4604 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4605 does the right thing.
4606 * The implementation of some type tests, especially for CONDITION
4607 types, is now tidier and maybe faster, due to CMU CL code
4608 originally by Douglas Crosher, ported by Martin Atzmueller.
4609 * Some math functions have been fixed, and there are new
4610 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4611 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4612 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4613 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4614 likely to be built into sbcl-0.7.0.)
4615 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4616 CL, ported to SBCL by Martin Atzmueller)
4617 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4618 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4619 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4620 * There's a new slam.sh hack to shorten the edit/compile/debug
4621 cycle for low-level changes to SBCL itself, and a new
4622 :SB-AFTER-XC-CORE target feature to control the generation of
4623 the after-xc.core file needed by slam.sh.
4624 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4625 COMPILE-FILE is no longer supported, so that now every function
4626 gets an entry point, so that block compilation looks a little
4627 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4628 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4629 returns the number of bytes consed since the system started,
4630 rather than the number consed since the first time the function
4631 was called. (The new definition parallels ANSI functions like
4632 CL:GET-INTERNAL-RUN-TIME.)
4633 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4634 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4635 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4636 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4637 * Fasl file version numbers are now independent of the target CPU,
4638 since historically most system changes which required version
4639 number changes have affected all CPUs equally. Similarly,
4640 the byte fasl file version is now equal to the ordinary
4643 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4644 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4645 is no longer recognized. I apologize for this, because it was
4646 listed in SB-EXT as a supported extension, but I found that
4647 its existing behavior was poorly specified, as well as incorrectly
4648 specified, and it looked like too much of a mess to straighten it
4649 out. I have enough on my hands trying to get ANSI stuff to work..
4650 * many patches ported from CMU CL by Martin Atzmueller, with
4651 half a dozen bug fixes in pretty-printing and the debugger, and
4652 half a dozen others elsewhere
4653 * fixed bug 13: Floating point infinities are now supported again.
4654 They might still be a little bit flaky, but thanks to bug reports
4655 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4656 as flaky as they were.
4657 * The --noprogrammer command line option is now supported. (Its
4658 behavior is slightly different in detail from what the old man
4659 page claimed it would do, but it's still appropriate under the
4660 same circumstances that the man page talks about.)
4661 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4662 are now supported, and enabled by default. Thus, the compiler can
4663 handle many floating point and complex operations much less
4664 inefficiently. (Thus e.g. you can implement a complex FFT
4666 * The compiler now detects type mismatches between DECLAIM FTYPE
4667 and DEFUN better, and implements CHECK-TYPE more correctly, and
4668 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4669 thanks to patches from Martin Atzmueller.
4670 * various fixes to make the cross-compiler more portable to
4671 ANSI-conforming-but-different cross-compilation hosts (notably
4672 Lispworks for Windows, following bug reports from Arthur Lemmens)
4673 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4674 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4675 fixed thanks to Pierre Mai's CMU CL patches.
4676 * fixes to keep the system from overflowing internal counters when
4677 it tries to use i/o buffers larger than 16M bytes
4678 * fixed bug 45a: Various internal functions required to support
4679 complex special functions have been merged from CMU CL sources.
4680 (When I was first setting up SBCL, I misunderstood a compile-time
4681 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4682 * improved support for type intersection and union, fixing bug 12
4683 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4684 more obscure bugs as well
4685 * some steps toward byte-compiling non-performance-critical
4686 parts of the system, courtesy of patches from Martin Atzmueller
4687 * Christophe Rhodes has made some debian packages of sbcl at
4688 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4689 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4690 stable, but are nonetheless usable. When he's ready, I'd be happy
4691 to add them to the SourceForge "File Releases" section. (And if
4692 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4693 * new fasl file format version number (because of changes in
4694 internal representation of (OR ..) types to accommodate the new
4695 support for (AND ..) types, among other things)
4697 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4698 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4700 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4702 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4703 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4704 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4705 * DESCRIBE now works on structure objects again.
4706 * Most function call argument type mismatches are now handled as
4707 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4708 know whether the function will be redefined before the call is
4709 executed. (The compiler could flag local calls with full WARNINGs,
4710 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4711 it doesn't keep track of enough information to know whether calls
4712 are local in this sense.)
4713 * Compiler output is now more verbose, with messages truncated
4714 later than before. (There should be some supported way for users
4715 to override the default verbosity, but I haven't decided how to
4716 provide it yet, so this behavior is still controlled by the internal
4717 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4718 src/compiler/ir1util.lisp.)
4719 * Fasl file format version numbers have increased again, because
4720 support for the Gray streams extension changes the layout of the
4721 system's STREAM objects.
4722 * The Gray subclassable streams extension now works, thanks to a
4723 patch from Martin Atzmueller.
4724 * The full LOAD-FOREIGN extension (not just the primitive
4725 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4726 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4727 but like most other programs, it defaults to copying the Unix
4728 environment from the original process instead of starting the
4729 new process in an empty environment.
4730 * Extensions which manipulate the Unix environment now support
4731 an :ENVIRONMENT keyword option which doesn't smash case or
4732 do other bad things. The CMU-CL-style :ENV option is retained
4733 for porting convenience.
4734 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4735 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4737 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4739 * A patch from Martin Atzmueller seems to have solved the SIGINT
4740 problem, and as far as we know, signal-handling now works cleanly.
4741 (If you find any new bugs, please report them!)
4742 * The system no longer defaults Lisp source file names to types
4743 ".l", ".cl", or ".lsp", but only to ".lisp".
4744 * The compiler no longer uses special default file extensions for
4745 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4746 seems to expect a single default extension for all compiled code,
4747 and there's no compelling reason to try to stretch the standard
4748 to allow two different extensions.) Instead, byte-compiled files
4749 default to the same extension as native-compiled files.
4750 * Fasl file format version numbers have increased again, because
4751 a rearrangement of internal implementation packages made some
4752 dumped symbols in old fasl files unreadable in new cores.
4753 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4754 many fewer weird special cases.
4755 * Bug #17 (differing COMPILE-FILE behavior between logical and
4756 physical pathnames) has been fixed, and some related misbehavior too,
4757 thanks to a patch from Martin Atzmueller.
4758 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4759 by Tim Moore, ported to SBCL by Martin Atzmueller.
4760 * Martin Atzmueller fixed several filesystem-related problems,
4761 including bug #36, in part by porting CMU CL patches, which were
4762 written in part by Paul Werkowski.
4763 * More compiler warnings in src/runtime/ are gone, thanks to
4764 more patches from Martin Atzmueller.
4765 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4768 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4770 * DESCRIBE now works on CONDITION objects.
4771 * The debugger now handles errors which arise when trying to print
4772 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4774 * The build system now uses an additional file, customize-target-features.lisp,
4775 to allow local modifications to the target *FEATURES* list. (The point of
4776 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4777 debugging features enabled, without having to worry about propagating it
4778 into everyone's system when I do a "cvs update".) When no
4779 customize-target-features.lisp file exists, the target *FEATURES* list
4780 should be constructed the same way as before.
4781 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4782 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4783 warn about behavior which is undefined under the ANSI spec. Note: This
4784 is specified by ANSI, but it's not very popular with programmers.
4785 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4786 macro in the SBCL sources for an example of a workaround which you
4787 might use to make portable ANSI-standard code which does what you want.
4788 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4789 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4790 when it's used as a non-toplevel form. (This is required in order
4791 to implement the DEFCONSTANT-EQX macro.)
4792 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4793 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4794 funny things, due to bugs in the implementation of EVAL-WHEN
4795 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4796 non-toplevel DEFCONSTANTs are uncommon.)
4797 * The core file version number and fasl file version number have been
4798 incremented, because the old noncompliant DEFCONSTANT behavior involved
4799 calling functions which no longer exist, and because I also took the
4800 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4801 * fixed bug 1 (error handling before read-eval-print loop starts), and
4802 redid debugger restarts and related debugger commands somewhat while
4804 ** The QUIT debugger command is gone, since it did something
4805 rather different than the SB-EXT:QUIT command, and since it never
4806 worked properly outside the main toplevel read/eval/print loop.
4807 Invoking the new TOPLEVEL restart provides the same functionality.
4808 ** The GO debugger command is also gone, since you can just invoke
4809 the CONTINUE restart directly instead.
4810 ** The TOP debugger command is also gone, since it's redundant with the
4811 FRAME 0 command, and since it interfered with abbreviations for the
4813 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4815 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4816 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4817 some porting work by Martin Atzmueller)
4818 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4819 with a boatload of patches which he ported to SBCL. Now that those
4821 ** The system tries to make sure that its low-priority messages
4822 are prefixed by semicolons, to help people who like to use
4823 syntax highlighting in their ILISP buffer. (This patch
4824 was originally due to Raymond Toy.)
4825 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4826 patches originally written by Raymond Toy.
4827 ** The compiler understands coercion between single-value and
4828 multiple-VALUES type expressions better, getting rid of some very
4829 weird behavior, thanks to patches originally by Robert MacLachlan
4830 and Douglas Crosher.
4831 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4832 lambda lists, thanks to a patch originally by Pierre Mai.
4833 ** The system no longer bogusly warns about "abbreviated type
4835 ** The compiler gets less confused by inlining and RETURN-FROM,
4836 thanks to some patches originally by Tim Moore.
4837 ** The system no longer hangs when dumping circular lists to fasl
4838 files, thanks to a patch originally from Douglas Crosher.
4839 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4840 undefined function error.
4841 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4842 in structure slot initforms) for now, documented workaround instead:-|
4843 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4844 * fixed bug 5: added stubs for various Gray stream functions called
4845 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4846 installed, at least appropriate type errors are generated
4847 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4848 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4849 consistently in DEFMETHOD forms.
4850 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4851 it doesn't seem to affect SBCL after all
4852 * The C runtime system now builds with better optimization and many
4853 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4855 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4857 * The system is now under CVS at SourceForge (instead of the
4858 CVS repository on my home machine).
4859 * The new signal handling code has been tweaked to treat register
4860 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4861 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4862 downstream, e.g. in debug-int.lisp, has implicit dependencies
4863 on the unsignedness of integer representation of machine words,
4864 and that caused the system to bomb out with infinite regress
4865 when trying to recover from type errors involving signed values,
4866 e.g. (BUTLAST '(1 2 3) -1).)
4867 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4868 (This was one of the bugs Peter Van Eynde reported back in July.)
4869 * The system now uses code inspired by Colin Walters' O(N)
4870 implementation of MAP (from the cmucl-imp@cons.org mailing
4871 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4872 inline the MAP operation, and there is more than one
4873 sequence argument to the MAP call (so that it can't just
4874 do ETYPECASE once and for all based on the type of the
4875 single sequence argument). (The old non-inline implementation
4876 of the general M-argument sequence-of-length-N case required
4877 O(M*N*N) time when any of the sequence arguments were LISTs.)
4878 * The QUIT :UNIX-CODE keyword argument has been renamed to
4879 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4880 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4882 * Raymond Wiker's patches to port dynamic loading from Linux to
4883 FreeBSD have been added.
4884 * The BUGS file is now more nearly up to date, thanks in large part
4885 to Martin Atzmueller's review of it.
4886 * The debugger now flushes standard output streams before it begins
4887 its output ("debugger invoked" and so forth).
4888 * The core version number and fasl file version number have both
4889 been incremented, because of incompatible changes in the layout
4891 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4892 used to not be called for a saved Lisp image.)
4893 * Martin Atzmueller's version of a patch to fix a compiler crash,
4894 as posted on sbcl-devel 13 September 2000, has been installed.
4895 * Instead of installing Martin Atzmueller's patch for the
4896 compiler transform for SUBSEQ, I deleted the compiler transform,
4897 and transforms for some similar consing operations.
4898 * A bug in signal handling which kept TRACE from working on OpenBSD
4900 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4901 away by constant folding
4902 * The system now defines its address space constants in one place
4903 (in the Lisp sources), and propagates them automatically elsewhere
4904 (through GENESIS and the sbcl.h file). Therefore, patching the
4905 address map is less unnecessarily tedious and error-prone. The
4906 Lisp names of address space constants have also been systematized.
4907 * CVS tags like dollar-Header-dollar have been removed from
4908 the sources, because they have never saved me trouble and
4909 they've been source of trouble working with patches and other
4910 diff-related operations.
4911 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4912 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4914 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4916 * The system has been ported to OpenBSD.
4917 * The system now compiles with a simple "sh make.sh" on the systems
4918 that it's supported on. I.e., now you no longer need to tweak
4919 text in the target-features.lisp-expr and symlinks in src/runtime/
4920 by hand, the make.sh takes care of it for you.
4921 * The system is no longer so grossly inefficient when compiling code
4922 involving vectors implemented as general (not simple) vectors (VECTOR T),
4923 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4924 which dares to use the various sequence functions on non-simple
4925 vectors, takes less of a performance hit.
4926 * There is now a primitive type predicate VECTOR-T-P
4927 to test for the (VECTOR T) type, so that e.g.
4928 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4929 can now be compiled with some semblance of efficiency. (The old code
4930 turned the type declaration into a full call to %TYPEP at runtime!)
4931 * AREF on (VECTOR T) is still not fast, since it's still compiled
4932 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4933 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4934 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4935 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4936 without making full calls to SUBTYPEP at runtime.
4937 (Some analogous efficiency issues for non-simple vectors specialized to
4938 element types other than T, or for non-simple multidimensional arrays,
4939 have not been addressed. They could almost certainly be handled the
4940 same way if anyone is motivated to do so.)
4941 * The changes in array handling break binary compatibility, so
4942 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4943 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4944 instead of (VALUES T T).
4945 * By following the instructions that Dan Barlow posted to sbcl-devel
4946 on 2 July 2000, I was able to enable primitive dynamic object
4947 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4948 functionality is not implemented (since it calls ld to resolve
4949 library references automatically, requiring RUN-PROGRAM for its
4950 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4951 try to resolve library references) is now supported.
4952 * The system now flushes the standard output streams when it terminates,
4953 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4954 them at several other probably-convenient times, e.g. in each pass of
4955 the toplevel read-eval-print loop, and after evaluating a form given
4956 as an "--eval" command-line option. (These changes were motivated by a
4957 discussion of stream flushing issues on cmucl-imp in August 2000.)
4958 * The source transform for TYPEP of array types no longer assumes
4959 that an array whose element type is a not-yet-defined type
4960 is implemented as an array of T, but instead punts, so that the
4961 type will be interpreted at runtime.
4962 * There is now some support for cross-compiling in make.sh: each of
4963 the phases of make.sh has its own script. (This should be transparent
4964 to people doing ordinary, non-cross-compile builds.)
4965 * Since my laptop doesn't have hundreds of megabytes of memory like
4966 my desktop machine, I became more motivated to do some items on
4967 my to-do list in order to reduce the size of the system a little:
4968 ** Arrange for various needed-only-at-cold-init things to be
4969 uninterned after cold init. To support this, those things have
4970 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4971 symbols with such names are now uninterned after cold init).
4972 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4973 fasl files for cold load.
4974 ** Remove the old compiler structure pooling code (which used to
4975 be conditional on the target feature :SB-ALLOC) completely.
4976 ** Redo the representation of some data in cold init to be more compact.
4977 (I also looked into supporting byte compiled code at bootstrap time,
4978 which would probably reduce the size of the system a lot, but that
4979 looked too complicated, so I punted for now.)
4980 * The maximum signal nesting depth in the src/runtime/ support code has
4981 been reduced from 4096 to 256. (I don't know any reason for the very
4982 large old value. If the new smaller value turns out to break something,
4983 I'll probably just bump it back up.)
4984 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4986 * Many, many bugs reported by Peter Van Eynde have been added to
4987 the BUGS list; some have even been fixed.
4988 * While enabling dynamic object file loading, I tried to make the
4989 code easier to understand, renaming various functions and variables
4990 with less ambiguous names, and changing some function calling
4991 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4992 * While trying to figure out how to do the OpenBSD port, I tried to
4993 clean up some of the code in src/runtime/. In particular, I dropped
4994 support for non-POSIX signal handling, added various comments,
4995 tweaked the code to reduce the number of compilation warnings, and
4996 renamed some files to increase consistency.
4997 * To support the new automatic configuration functionality in make.sh,
4998 the source file target-features.lisp-expr has been replaced with the
4999 source file base-target-features.lisp-expr and the machine-generated
5000 file local-target-features.lisp-expr.
5001 * fixed a stupid quoting error in make.sh so that using CMU CL
5002 "lisp -batch" as cross-compilation host works again
5004 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5006 * DESCRIBE no longer tries to call itself recursively to describe
5007 bound/fbound values, so that it no longer fails on symbols which are
5008 bound to themselves (like keywords, T, and NIL).
5009 * DESCRIBE now works on generic functions.
5010 * The printer now prints less-screwed-up representations of closures
5011 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5012 * A private symbol is used instead of the :EMPTY keyword previously
5013 used to mark empty slots in hash tables. Thus
5014 (DEFVAR *HT* (MAKE-HASH-TABLE))
5015 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5016 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5017 now does what ANSI says that it should. (You can still get
5018 similar noncompliant behavior if bang on the hash table
5019 implementation with all the symbols you get back from
5020 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5021 This breaks binary compatibility, since tests for equality to
5022 :EMPTY are wired into things like the macroexpansion of
5023 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5025 * There's now a minimal placeholder implementation for CL:STEP,
5026 as required by ANSI.
5027 * An obscure bug in the interaction of the normal compiler, the byte
5028 compiler, inlining, and structure predicates has been patched
5029 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5030 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5032 * Missing ordinary arguments in a macro call are now detected even
5033 when the macro lambda list contains &KEY or &REST.
5034 * The debugger no longer complains about encountering the top of the
5035 stack when you type "FRAME 0" to explicitly instruct it to go to
5036 the top of the stack. And it now prints the frame you request even
5037 if it's the current frame (instead of saying "You are here.").
5038 * As specified by ANSI, the system now always prints keywords
5039 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5041 * The default initial SIZE of HASH-TABLEs is now smaller.
5042 * Type information from CLOS class dispatch is now propagated
5043 into DEFMETHOD bodies, so that e.g.
5044 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5046 is now basically equivalent to
5047 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5048 (DECLARE (TYPE SINGLE-FLOAT X))
5050 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5051 operation, without having to do run-time type dispatch.
5052 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5053 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5054 * Since I don't seem to be making big file reorganizations very often
5055 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5056 is overflowing my ability to conveniently back them up), I've finally
5057 checked the system into CVS. (The CVS repository is on my home system,
5058 not at SourceForge -- putting it on SourceForge might come later.)
5059 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5060 high-level GC-NOTIFY-FOO functions send their output. (There's
5061 still very little control of where low-level verbose GC functions
5062 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5063 less than it used to -- the GC-NOTIFY-FOO functions are now under
5064 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5065 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5066 in only one place in the source code, and propagates it automatically
5067 everywhere that it's needed. Thus e.g. when I bump the version from
5068 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5069 * The C source files now include boilerplate legalese and documentation
5070 at the head of each file (just as the Lisp source files already did).
5071 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5072 to his page will be replaced with a link to his new CLiki service.
5074 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5076 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5077 * The build process now looks for GNU make under the default name "gmake",
5078 instead of "make" as it used to. If GNU make is not available as "gmake"
5079 on your system, you can change this default behavior by setting the
5080 GNUMAKE environment variable.
5081 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5082 can build without error under CMU CL.
5084 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5086 * There is now a partial SBCL user manual (with some new text and some
5087 text cribbed from the CMU CL manual).
5088 * The beginnings of a profiler have been added (starting with the
5089 CMU CL profiler and simplifying and cleaning up). Eventually the
5090 main interface should be through the TRACE macro, but for now,
5091 it's still accessed through vaguely CMU-CL-style functions and macros
5092 exported from the package SB-PROFILE.
5093 * Some problems left over from porting CMU CL to the new
5094 cross-compilation bootstrap process have been cleaned up:
5095 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5096 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5097 part when getting rid of the compiler *BACKEND* stuff.)
5098 ** The value of *NULL-TYPE* was screwed up, because it was
5099 being initialized before the type system knew the final
5100 definition of the 'NULL type. This screwed up several key
5101 optimizations in the compiler, causing inefficiency in all sorts
5102 of places. (I found it because I wanted to understand why
5103 GET-INTERNAL-RUN-TIME was consing.)
5104 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5105 PROCLAIM FTYPE information. Unfortunately this broke binary
5106 compatibility again, since now the forms output by DEFGENERIC
5107 to refer to functions which didn't exist in 0.6.3.
5108 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5109 can use the new (as of 0.6.3) transform for SOME into MAP into
5111 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5112 values to (INTEGER 0 1000000), so that the time code will no longer
5113 occasionally get blown up by Linux returning 1000000 microseconds
5114 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5115 its output conform to the ANSI spec. (Alas, this makes its output
5116 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5117 * A full call to MAP NIL with a single sequence argument no longer conses.
5118 * fixes to problems pointed out by Martin Atzmueller:
5119 * The manual page no longer talks about multiprocessing as though
5120 it were currently supported.
5121 * The ILISP support patches have been removed from the distribution,
5122 because as of version 5.10.1, ILISP now supports SBCL without us
5123 having to maintain patches.
5124 * added a modified version of Raymond Toy's recent CMU CL patch for
5125 EQUALP comparison of HASH-TABLE
5127 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5129 * The system still can't cross-compile itself with
5130 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5131 entails), but at least it can compile more of itself that way
5132 than it used to be able to, and various buglets which were uncovered
5133 by trying to cross-compile itself that way have now been fixed.
5134 * This release breaks binary compatibility again. This time
5135 at least I've incremented the FASL file format version to 2, so that the
5136 problem can be detected reliably instead of just causing weird errors.
5137 * various new style warnings:
5138 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5139 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5140 ** using the lexical binding of a variable named in the *FOO* style
5141 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5142 as specified by ANSI.
5143 * *RANDOM-STATE* is no longer automatically initialized from
5144 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5145 default behavior of the system is to repeat its behavior every time
5146 it's run. If you'd like to change this behavior, you can always
5147 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5148 old convention there was no comparably easy way to get the system to
5149 repeat its behavior every time it was run.
5150 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5151 FTYPE declarations has been removed, in favor of their ANSI
5152 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5153 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5154 the types of their sequence arguments can be determined at compile time.
5155 This is done through a new open code expansion for MAP which eliminates
5156 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5157 argument types can be determined at compile time.
5158 * The optimizer now transforms COERCE into an identity operation when it
5159 can prove that the coerced object is already of the correct type. (This
5160 can be a win for machine generated code, including the output of other
5161 optimization transforms, such as the MAP transform above.)
5162 * Credit information has been moved from source file headers into CREDITS.
5163 * Source file headers have been made more standard.
5164 * The CASE macro now compiles without complaining even when it has
5167 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5169 * (Note that the way that the PCL macroexpansions were rewritten
5170 to accommodate the change in DEFGENERIC below breaks binary
5171 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5172 not run under sbcl-0.6.2. Once we get out of alpha releases,
5173 i.e. hit release 1.0.0, we'll probably try to maintain binary
5174 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5175 and sbcl-1.4.4. Until then, however, it might be fairly common
5176 for maintenance releases to break binary compatibility.)
5177 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5179 * The reporting of unhandled signals has been changed to print some
5180 explanatory text as well as the report form. (Previously only
5181 the report form was printed.)
5182 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5183 it defines, so that the compiler no longer issues undefined function
5184 warnings for compiled-but-not-yet-loaded generic functions.
5185 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5186 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5187 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5188 section of the ANSI spec are supported.
5189 * The "" nickname for the "KEYWORD" package has been removed.
5190 The reader still handles symbol tokens which begin with a package marker
5191 as keywords, but it doesn't expose its mechanism for doing so in the
5192 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5193 * The system now issues STYLE-WARNINGs for contradictory TYPE
5194 proclamations. (Warnings for contradictory FTYPE proclamations would
5195 be nice too, but those can't be done usefully unless the type system
5196 is made smarter about FUNCTION types.)
5197 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5198 systematized, so that "*target-*.lisp is supposed to exist only on the
5199 target and imply that there's a related file which exists on the
5200 host, and *host-*.lisp is supposed to exist only on the host and imply
5201 that there's a related file which exists on the target. This involves a
5202 lot of renaming. Hopefully the acute confusion caused by the renaming
5203 will be justified by the reduction in chronic confusion..
5204 ** runtime-type.lisp -> early-target-type.lisp
5205 ** target-type.lisp -> late-target-type.lisp
5206 ** early-host-format.lisp -> early-format.lisp
5207 ** late-host-format.lisp -> late-format.lisp
5208 ** host-error.lisp -> misc-error.lisp
5209 ** early-error.lisp -> early-target-error.lisp
5210 ** late-error.lisp -> late-target-error.lisp
5211 ** host-defboot.lisp -> early-defboot.lisp
5212 ** code/misc.lisp -> code/target-misc.lisp
5213 ** code/host-misc.lisp -> code/misc.lisp
5214 ** code/numbers.lisp -> code/target-numbers.lisp
5215 ** code/early-numbers.lisp -> numbers.lisp
5216 ** early-host-type.lisp -> early-type.lisp
5217 ** late-host-type.lisp -> late-type.lisp
5218 ** host-typep.lisp -> typep.lisp
5219 ** load.lisp -> target-load.lisp
5220 ** host-load.lisp -> load.lisp
5221 ** host-disassem.lisp -> disassem.lisp
5222 ** host-insts.lisp -> insts.lisp
5223 ** byte-comp.lisp -> target-byte-comp.lisp
5224 ** host-byte-comp.lisp -> byte-comp.lisp
5225 ** host-signal.lisp -> signal.lisp
5226 ** host-defstruct.lisp -> defstruct.lisp
5227 ** late-target-type.lisp -> deftypes-for-target.lisp
5228 Furthermore, several other previously target-only files foo.lisp (e.g.
5229 hash-table.lisp and random.lisp) have been split into a target-and-host
5230 foo.lisp file and a target-only target-foo.lisp file, with their key type
5231 definitions in the target-and-host part, so that the cross-compiler will
5232 know more about target types.
5233 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5234 gone away. In their place are various *BACKEND-FOO* variables
5235 corresponding to the slots of the old structure.
5236 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5237 into the target SBCL has been fixed.
5238 * The chill.lisp system for loading cold code into a running SBCL
5240 * Support for the CMU CL "scavenger hook" extension has been removed.
5241 (It was undocumented and unused in the CMU CL sources that SBCL was
5242 derived from, and stale in sbcl-0.6.1.)
5243 * Various errors in the cross-compiler type system were detected
5244 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5245 (enabling various consistency checks). Many of them were fixed,
5246 but some hard problems remain, so the compiler is back to
5247 running without *TYPE-SYSTEM-INITIALIZED* for now.
5248 * As part of the cross-compiler type system cleanup, I implemented
5249 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5250 * I have started adding UNCROSS calls throughout the type system
5251 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5252 on cross-compiler input files will be able to go away, and various
5254 * CONSTANTP now returns true for quoted forms (as explicitly required
5257 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5259 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5260 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5261 (MAKE-LIST -1). In the longer term, it ought to become true
5262 that declarations are assertions even at SAFETY 1. For now, it's not
5263 quite true even at SAFETY 3, but it's at least more nearly true..
5264 (Note that this change seems to increases the size of the system by
5265 O(5%) and to decrease the speed of the compiler by 20% or more.)
5266 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5267 for the problem of printing dozens of lines of distracting information
5268 about low-level system machinery as part of the top stack frame
5269 on entry to the debugger when an undefined function was called.
5270 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5271 is not reset to COMMON-LISP-USER.
5272 * Compilation of stuff related to dyncount.lisp has been made conditional
5273 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5274 smaller. The various dyncount-related symbols have been moved into
5275 a new "SB-DYNCOUNT" package.
5276 * tty-inspect.lisp has been renamed to inspect.lisp.
5277 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5278 feature has gone away. (When we eventually port to other flavors of
5279 libc and/or Unix, we'll try to make the differences between flavors
5280 invisible at the user level.)
5281 * Various other *FEATURES* tags, and/or their associated conditionals,
5282 have been removed if obsolescent, or given better documentation, or
5283 sometimes given more-mnemonic names.
5285 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5287 * tidied up "make.sh" script
5288 * tidied up system directory structure
5289 * better "clean.sh" behavior
5290 * added doc/FOR-CMUCL-DEVELOPERS
5291 * many many small tweaks to output format, e.g. removing possibly-confusing
5292 trailing #\. character in DESCRIBE-INSTANCE
5293 * (EQUALP #\A 'A) no longer signals an error.
5294 * new hashing code, including EQUALP hashing
5295 * tidied up Lisp initialization and toplevel
5296 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5297 * command line argument processing
5298 * added POSIX-GETENV function to deal with Unix-ish environment variables
5299 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5300 terminating SBCL on EOF
5301 * non-verbose GC by default
5302 * There is no more "sbcl" shell script; the sbcl file is now the C
5303 runtime executable (just like CMU CL).
5304 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5306 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5307 symbol and package information as Lisp native symbol and package objects
5308 instead of strings naming symbols and strings naming packages. This way,
5309 whenever packages are renamed (as in warm init), debug information is
5310 transformed along with everything else.
5311 * tweaked the optimization policy declarations which control the building
5312 of SBCL itself. Now, among other things, the system no longer saves
5313 source location debugging information. (This helps two problems at once
5314 by reducing SBCL size and by keeping SBCL from trying to look for its
5315 sources -- which may not exist -- when reporting errors.)
5316 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5317 debugging and testing purposes
5318 * cleaned up printing, making the printer call PRINT-OBJECT for
5319 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5320 methods, giving nearly-ANSI behavior
5321 * converted almost all special variables to use *FOO* naming convention
5322 * deleted PARSE-TIME functionality, since it can be done portably
5323 * moved some files out of cold init into warm init
5324 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5326 * regularized formatting of source files
5327 * added an install.sh script
5328 * fixed ridiculous memory usage of cross-compiler by making
5329 compiler/alloc.lisp not try to do pooling unless it can hook
5330 itself into the GC of the cross-compilation host. Now the system
5331 builds nicely on my old laptop.
5332 * added :SB-ALLOC in target-features.lisp-expr
5333 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5334 was not implemented)
5335 * re-did condition handling and note reporting in the compiler. Notes
5336 are no longer handled by signalling conditions. Style warnings
5337 and warnings are handled more correctly and reported in such a way
5338 that it's easy to find one or the other in your output (so that you
5339 can e.g. figure out which of many problems caused COMPILE-FILE to
5341 * changed the severity of several compiler warnings from full WARNING
5342 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5343 compiler note reporting so that it doesn't use the condition system
5344 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5345 COMPILE-FILE command)
5346 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5347 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5348 no longer supported, since their implementation was deeply intertwingled
5349 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5350 * removed bogus "support" for compiler macros named (SETF FOO), and
5351 removed the compiler macro for SETF INFO (but only after making a fool
5352 of myself on the cmucl-imp mailing list by posting a bogus patch for
5353 DEFINE-COMPILER-MACRO..)
5354 * Compiled files containing forms which have side effects on the Lisp
5355 reader (such as DEFPACKAGE forms) are now handled more correctly.
5356 (Compiler queuing of top level lambdas has been suppressed by setting
5357 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5358 * deleted various currently-unused source files, e.g. gengc.lisp. They
5359 may be added back at some point e.g. when porting to other architectures,
5360 but until they are it's distracting to distribute them and to try to
5362 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5363 there were so many of them they're just distractions, and UNCROSS is
5364 known to be able to handle the current sources
5365 * moved PROFILE functionality into TRACE, so that it will be clear
5366 how the wrapping and unwrapping of functions when you profile them
5367 interacts with the wrapping and unwrapping of functions when you
5368 trace them. (Actually, the functionality isn't there yet, but at least
5369 the interface specification is there. Hopefully, the functionality will
5370 arrive with some future maintenance release.)
5371 * removed host-oops.lisp
5372 * changed signature of QUIT function to allow UNIX-CODE argument
5373 * fixed READ-SEQUENCE bug
5374 * tweaked verbose GC output so that it looks more like the progress
5375 output that ANSI specifies for functions like LOAD
5376 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5377 * added <http://sbcl.sourceforge.com> to the banner information printed by