1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.30:
3 * improvement: stack allocation is should now be possible in all nested
4 inlining cases: failure to stack allocate when equivalent code is manually
5 open coded is now considered a bug.
6 * improvements related to Unicode:
7 ** the Unicode character database has been upgraded to the
8 Unicode 5.1 standard, giving names and properties to a number of new
9 characters, and providing a few extra characters with case
11 ** the system now recognizes and produces names for Unicode Hangul
13 ** the EBCDIC-US external-format is now supported for octet operations
14 (as well as for stream operations).
15 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
16 be used to output toplevel compile-time effects into a separate .CFASL
18 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
19 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
21 * optimization: TRUNCATE on known single- and double-floats is upto 25%
23 * optimization: division of floating point numbers by constants uses
24 multiplication by reciprocal when an exact reciprocal exists.
25 * optimization: multiplication of single- and double-floats floats by
26 constant two has been optimized.
27 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
28 sufficient type information is available. (thanks to Leslie Polzer)
29 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
30 known structure objects are as efficient as defstruct generated accessors.
31 * optimization: unused vector creation can now be optimized away.
32 * improvement: ASDF systems can now depends on SB-INTROSPECT.
33 * improvement: a STYLE-WARNING is signalled when a generic function
34 clobbers an earlier FTYPE proclamation.
35 * improvement: the compiler is able to track the effective type of
36 generic function across method addition and removal even in the
37 absence of an explicit DEFGENERIC.
38 * improvement: DESCRIBE now reports on symbols naming undefined
39 but assumed or declared function as well.
40 * improvement: recompilation of systems using SB-GROVEL now works
41 (thanks to Leslie Polzer)
42 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
43 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
45 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
46 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
47 well as user defined declaration names.
48 ** VARIABLE-INFORMATION is now aware of alien variables.
49 * improvement: improved address space layout on OpenBSD (thanks to Josh
51 * improvement: pretty-printing of various Lisp forms has been improved
52 (thanks to Tobias Rittweiler)
53 * bug fix: some out-of-line array predicates were missing (reported by
55 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
57 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
58 (thanks to Larry D'Anna)
59 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
60 as well. (reported by Josh Elsasser)
61 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
62 leading to possible attempts to delete the same file twice. See docstring
63 on DELETE-FILE for details. (reported by John Fremlin)
64 * bug fix: the low-level debugger had 32-bit assumptions and was missing
65 information about some array types. (thanks to Luis Oliveira)
66 * bug fix: moderately complex combinations of inline expansions could
67 be miscompiled if the result was declared to be dynamic extent.
68 * bug fix: in some cases no compiler note about failure to stack allocate
69 was emitted, even if the objects were in fact heap allocated.
70 * bug fix: minor violation of "otherwise inaccessible" rule for stack
71 allocation could cause objects users might reasonably expect to
72 be heap allocated to be stack allocated.
73 * bug fix: DESCRIBE signalled an error for generic functions under
74 certain circumstances. (thanks to Leslie Polzer)
75 * bug fix: Fixed spelling of an error message.
77 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
78 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
79 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
80 of SB-THREAD:THREAD-ERROR-THREAD.
81 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
82 * new feature: docstrings for local and anonymous functions are no longer
83 discarded. (thanks to Leslie Polzer)
84 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
85 values in other threads.
86 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
87 about object allocation.
88 * optimization: division of a real float by a complex float is implemented
89 with a specialised code sequence.
90 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
91 keywords is an order of magnitude faster.
92 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
93 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
94 methods, and similarly for non-standard metaclass classes as long as there
95 are no methods additional on MAKE-INSTANCE.
96 * optimization: more efficient type-checks for FIXNUMs when the value
97 is known to be a signed word on x86 and x86-64.
98 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
99 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
101 * optimization: compiler is smarter about delegating argument type checks to
103 * optimization: several character functions are now compiled somewhat more
104 efficiently. (reported by Lynn Quam)
105 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
106 * improvement: less unsafe constant folding in floating point arithmetic,
107 especially for mixed complex/real -float operations.
108 * optimization: constant double and single floats are stored in native
109 unboxed format on x86[-64].
110 * optimization: smarter code for arithmetic operations with constant floats,
111 complex floats, or integers on x86[-64].
112 * optimization: smarter code for conjugate/multiplication of float complexes
113 and abs/negate of floats on x86-64.
114 * optimization: more efficient complex float and real float operations on
116 * improvement: complex float division is slightly more stable.
117 * improvement: DESCRIBE output has been reworked to be easier to read and
118 contains more pertinent information.
119 * improvement: failure to provide requested stack allocation compiler notes
120 provided in all cases (requested stack allocation not happening without a
121 note being issued is now considered a bug.)
122 * bug fix: SB-POSIX exports the documented types and functions
123 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
124 types. (reported by "abhi")
125 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
126 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
127 (thanks to Paul Khuong)
128 * bug fix: looping around HANDLER-CASE could silently consume stack space
129 on each iteration. (reported by "foobar")
130 * bug fix: better error signalling when calls to functions seeking elements
131 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
132 (reported by Tobias Rittweiler)
133 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
134 directory components now works as it used to. (various prolems reported by
135 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
136 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
137 (reported by Elliot Slaughter, thanks to Stas Boukarev)
138 * bug fix: bogus undefined variable warnings from fopcompiled references to
139 global variables. (thanks to Lars Rune Nøstdal)
140 * bug fix: foreign function names should now appear in backtraces on
141 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
142 * bug fix: SETF compiler macro documentation strings are not discarded
144 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
145 (thanks to Alex Plotnick)
146 * bug fix: SLEEP accepts large integer arguments, truncating them to
147 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
148 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
149 * bug fix: compiler notes for expensive slot type checks could be emitted
150 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
152 changes in sbcl-1.0.29 relative to 1.0.28:
153 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
154 https://bugs.launchpad.net/sbcl
155 Bugs can be reported directly there, or by sending email to
156 sbcl-bugs@lists.sourceforge.net
157 (no subscription required.)
158 * minor incompatible change: under weak type checking policy integer
159 types are weakened less aggressively.
160 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
161 allowed to return, which causes SBCL to quit with exit status 0. Previously
162 if the function returned with a small integer return value, that value
163 was accidentally reused as the exit status.
164 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
165 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
166 :HASH-FUNCTION argument. Refer to user manual for details.
167 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
169 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
170 microseconds since the Unix epoch on all platforms.
171 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
172 allows the compiler to safely elide boundedness checks for special
174 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
175 the symbol, prohibits both lexical and dynamic binding. This is mainly an
176 efficiency measure for threaded platforms, but also valueable in
178 * new feature: UNC pathnames are now understood by the system on Windows.
179 * optimization: the compiler uses a specialized version of FILL when the
180 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
182 * optimization: accesses to potentially non-simple arrays where element type
183 is known are 50% faster.
184 * optimization: compiler now generates faster array typechecking code.
185 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
187 * optimization: multidimensional array accesses in the absence of type
188 information regarding array rank are approximately 10% faster due to
189 open coding of ARRAY-RANK.
190 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
191 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
193 * optimization: result of call to VECTOR can now be stack allocated.
194 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
195 as long as the resulting array is one-dimensional and has a known
196 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
197 length of the list matches the known length of the vector does not
198 allocate the list as an intermediate step. Ditto for VECTOR and simple
200 * optimization: MAKE-ARRAY can now stack allocate in the presence of
201 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
202 known element type, and is known to be simple and one dimensional.
203 * improvement: SBCL now emits a compiler note where stack allocation was
204 requested but could not be provided (not in all cases, unfortunately)
205 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
206 * improvement: pretty-printing loop has been implemented properly. (thanks
207 to Tobias Rittweiler)
208 * documentation: CLOS slot typechecing policy has been documented.
209 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
210 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
211 pointer, leading to memory faults. (thanks to Bart Botta)
212 * bug fix: better floating point exception handling on x86/OpenBSD.
213 (thanks to Josh Elsasser)
214 * bug fix: exit status from QUIT when called under --script was lost
215 (reported by Hubert Kauker)
216 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
217 same implementation of FILL to initialize the array, even if a more
218 efficient one was available (reported by Stas Boukarev, thanks to
220 * bug fix: potential miscompilation of array stack allocation on x86 and
221 x86-64. (reported by Time Tossavainen)
222 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
223 result in their subforms being treated as top level forms. (reported by
225 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
226 than a machine register could leave garbage in the high bits of the
227 result register (bug 316325).
228 * bug fix: disable address space randomization Linux/x86-64 as well,
229 not just x86-64. (reported by Ken Olum)
230 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
231 generate incorrect code.
232 * bug fix: #201; type inference for CONS and ARRAY types could derive
233 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
234 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
235 could not be assigned to or bound with PROGV. (reported by Lorenz
237 * bug fix: the value of CL:- in the inspector was the previous expression
238 evaluated rather than the expression being evaluated.
239 * bug fix: constants can no longer be locally declared special.
240 * bug fix: signals delivered to threads started from foreign land (read:
241 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
242 thread by blocking all signals and resignalling.
243 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
244 from :INITFORM, if any.
246 changes in sbcl-1.0.28 relative to 1.0.27:
247 * a number of bugs in cross-compilation have been fixed, with the ultimate
248 result that building under (at least) clisp should be much more reliable.
249 * minor incompatible changes: echo-streams now propagate unread-char to the
250 underlying input stream, and no longer permit unreading more than one
252 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
253 frames, allowing for instance more reliable backtraces.
254 * improvement: the debugger REPL can now reference lexical variables
255 by name directly for code compiled with (DEBUG 3).
256 * improvement: errors from malformed declarations now have better source
257 paths associated with them. (thanks to Tobias Rittweiler)
258 * optimization: faster local calls on x86/x86-64
259 * bug fix: some error messages for out-of-bound array indexes confused the
260 index and the bound. (thanks to Stas Boukarev)
261 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
263 * bug fix: running regressions tests in shells without OSTYPE set now works.
264 (reported by Harald Hanche-Olsen)
265 * bug fix: more robust static space exhaustion signalling from
266 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
267 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
268 docstring away instead of storing it under names such as (LAMBDA (X)).
269 (reported by Leslie Polzer)
270 * bug fix: timers could go off in the wrong order, be delayed indefinitely
271 (thanks to Ole Arndt for the patch)
272 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
273 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
274 potentially-invalid effective methods in its cache.
275 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
276 instances as well (thanks to Paul Khuong)
277 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
278 SB-POSIX:WAITPID and their C equivalents.
279 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
281 changes in sbcl-1.0.27 relative to 1.0.26:
282 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
283 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
284 * improvement: the system either recovers from stack exhaustion or dies
285 properly as opposed to leaving the user uncertain of whether the handler
286 trampled on some random memory next to the stack or having to rely on
287 --lose-on-corruption (which is still a good idea to use in production
288 because stack exhaustion can happen in signal handlers which will likely
290 * bug fix: fix gc related interrupt handling bug on ppc (regression from
291 1.0.25.37, reported by Harald Hanche-Olsen)
292 * bug fix: work around signal delivery bug in darwin (regression from
293 1.0.25.44, reported by Sidney Markowitz)
294 * bug fix: fix ERROR leaking memory (reported by David Thompson)
296 changes in sbcl-1.0.26 relative to 1.0.25:
297 * incompatible change: an interruption (be it a function passed to
298 INTERRUPT-THREAD or a timer function) runs in an environment where
299 interrupts can be enabled. The interruption can use
300 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
301 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
302 potentially running out of stack. Keep in mind that in the absence
303 of WITHOUT-INTERRUPTS some potentially blocking operation such as
304 acquiring a lock can enable interrupts.
305 * incompatible change: GC-OFF and GC-ON are removed, as they were
306 always unsafe. Use WITHOUT-GCING instead.
307 * new feature: runtime option --disable-ldb
308 * new feature: runtime option --lose-on-corruption to die at the
309 slightest hint of possibly non-recoverable errors: running out of
310 memory, stack, alien stack, binding stack, encountering a memory
311 fault, etc. In the absence of --lose-on-corruption a warning is
313 * enhancement: detect binding stack exhaustion
314 * enhancement: detect alien stack exhaustion on x86/x86-64
315 * improvement: generally more stable and reliable interrupt handling
316 * improvement: there is a per thread interruption queue,
317 interruptions are executed in order of arrival
318 * improvement: a repeating timer reschedules itself when the it has
319 finished, but expiration times are spaced equally. If an
320 expiration time is in the past it will trigger after a short grace
321 period that may give a chance to other things to run.
322 * optimization: slightly faster gc on multithreaded builds
323 * optimization: faster WITHOUT-GCING
324 * bug fix: when JOIN-THREAD signals an error, do it when not holding
325 important locks so that the debugger/handler doesn't produce
326 recursive errors or deadlock.
327 * bug fix: real-time signals are not used anymore, so no more
328 hanging when the system wide real-time signal queue gets full.
329 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
331 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
332 * bug fix: fix random memory faults related to interrupts on alpha
333 * bug fix: fix random memory faults related to interrupts on sparc
334 * bug fix: fix deadlocks related to starting threads
335 * bug fix: fix deadlines on locks on futex platforms
336 * bug fix: restore errno in signal handlers
337 * bug fix: fix deadlocks related to hash tables
338 * bug fix: fix deadlocks in pcl
340 changes in sbcl-1.0.25 relative to 1.0.24:
341 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
342 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
343 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
344 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
345 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
346 better name and does not return values so stale on multiprocessor systems.
347 Also, HOLDING-MUTEX-P was added for about the only sane usage of
349 * improvement: unithread builds keep track of MUTEX-VALUE.
350 * improvement: reading from a TWO-WAY-STREAM does not touch the output
351 stream anymore making it thread safe to have a concurrent reader and
352 a writer, for instance, in a pipe.
353 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
354 arguments, making compiler-macros for SETF-functions able to inspect
355 their constant arguments.
356 * improvement: COMPILE-FILE reports times with millisecond accuracy
357 (thanks to Luis Oliveira)
358 * optimization: CHAR-CODE type derivation has been improved, making
359 TYPEP elimination on subtypes of CHARACTER work better. (reported
360 by Tobias Rittweiler, patch by Paul Khuong)
361 * bug fix: setting alien structure fields of type struct by value now
362 computes the right offset for the memory copy.
363 * bug fix: compilation problem involving inlined calls to aliens with
364 result type VOID. (reported by Ken Olum)
365 * bug fix: #235a; sequential inline expasion in different policies no
366 longer reuses the functional from the previous expansion site.
367 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
368 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
369 * bug fix: named ENUMs in multiply-referenced alien record types no longer
370 cause an implied type redefinition. Regression from 1.0.21.29.
371 * bug fix: sign-extension of small signed return values now works with C
372 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
373 * improvements to the Windows port:
374 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
375 Westfold, thanks to Rudi Schlatte)
377 changes in sbcl-1.0.24 relative to 1.0.23:
378 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
379 vector of a multidimensional SIMPLE-ARRAY.
380 * new feature: the system now signals a continuable error if standard
381 readtable modification is attempted. (thanks to Tobias Rittweiler)
382 * new feature: DIRECTORY has been extended with a non-standard keyword
383 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
384 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
385 has been robustified and documented better. (thanks to Robert Goldman)
386 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
387 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
388 * tradeoff: constant FORMAT control strings are now compiled unless
389 SPACE > SPEED (previously only when SPEED > SPACE.)
390 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
392 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
394 * bug fix: lexical type declarations are now correctly reported by
395 SB-CLTL2. (reported by Larry D'Anna)
396 * bug fix: STRING-TO-OCTETS did not handle :START properly when
397 using UTF-8 as external format. (thanks to Luis Oliveira)
398 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
399 are signalled correctly. (thanks to Stas Boukarev)
400 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
401 designator. (thanks to Tobias Rittweiler)
402 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
403 designator, and returns T instead of the function. (thanks to
405 * bug fix: direct superclasses of STANDARD-CLASS and
406 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
407 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
408 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
409 when no class with the named slot yet exists no longer causes a
410 compile-time style-warning.
411 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
412 in safe code. (reported by Didier Verna)
413 * bug fix: #430; nested structure constructors can stack allocate.
414 * bug fix: on some 64-bit platforms dynamic space size was truncated
415 to #xffff0000 bytes. (reported by Benjamin Lambert)
416 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
417 REPL unusable. (reported by Daniel Herring)
418 * bug fix: return values of READ-SEQUENCE did not take :START into
419 account on file streams, regressions since 1.0.12.22. (reported by
420 Thomas Russ, patch by Paul Khuong)
421 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
422 method specializer used to confuse permuation vector optimization.
423 * bug fix: system inserted bogus implicit type declarations for local
424 special variables in DEFMETHOD bodies.
425 * bug fix: #354; duplicated frames in backtraces due to
426 non-tail-call-optimized XEPs to functions with return type NIL
428 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
429 initializes structure object slots according to DEFSTRUCT initforms,
430 and DEFSTRUCT forms :INCLUDEind structure classes defined using
431 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
432 (reported by Bruno Haible and Stephen Wilson)
433 * bug fix: #395; fill-pointer output streams used now support
434 element-type BASE-CHAR as well.
435 * bug fix: compiler error when attempting to derive return value of
436 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
438 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
440 * bug fix: Mac OS X binaries should now be portable between Leopard
443 changes in sbcl-1.0.23 relative to 1.0.22:
444 * enhancement: when disassembling method functions, disassembly
445 for the associated fast function is also produced.
446 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
448 * optimization: printing with *PRINT-PRETTY* true is now more
449 efficient as long as the object being printed doesn't require
450 special handling by the pretty printer.
451 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
452 now interact correctly with type declarations.
453 * partial bug fix: PCL detects infinite recursion during wrapper
454 validation. (thanks to Attila Lendvai)
455 * bug fix: #426; nested function calls are inlined properly.
456 Previously if FOO was an inline function, in calls of the form
457 (FOO (FOO ...)) the outer call was not inlined.
458 * bug fix: long long arguments passed in registers to alien
459 functions on PowerPC Linux and NetBSD are now handled correctly
460 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
462 changes in sbcl-1.0.22 relative to 1.0.21:
463 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
464 for the shared object in the current directory, but passes the native
465 namestring of the designated pathname to the operation system's shared
466 object loading function as-it.
467 * minor incompatible change: --disable-debugger toplevel option now takes
468 effect before processing of initialization files and --eval or --load
470 * new feature: new commandline argument: --script, which supports
471 shebang lines. See documentation for details. (based on work by
473 * new feature: SAVE-LISP-AND-DIE can save current values of
474 --dynamic-space-size and --control-stack-size in the executable core,
475 causing it to skip normal runtime option processing. See documentation
476 for details. (thanks to Zach Beane)
477 * enhancement: inoccous calls to EVAL or generic functions dispatching
478 on subclasses of eg. STREAM no longer cause compiler notes to appear.
479 * enhancement: the system no longer resignals errors from --load and
480 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
481 associated with the original error to be lost. (thanks to Ariel
483 * enhancement: :DONT-SAVE keyword argument has been added to
484 LOAD-SHARED-OBJECT for controlling interaction with
485 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
486 the effects of an earlier LOAD-SHARED-OBJECT call.
487 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
488 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
489 provided. (reported by Cedric St-Jean)
490 * bug fix: circularity handling in the reader did not treat raw
491 structure slots correctly. (reported by Cedric St-Jean)
492 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
493 file descriptors when there were none.
494 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
495 was broken. (reporteed by Willem Broekema)
496 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
497 pathnames without a directory.
498 * bug fix: COMPILE-FILE did not warn about undefined variable
499 references at toplevel, and LOAD of the resulting fasl did
501 * bug fix: functions with non-required arguments used to end up with
502 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
503 * bug fix: redefining a function with non-required arguments didn't
504 update the system's knowledge about its call signature properly.
505 * bug fix: fixed #431; incompatible alien record type redefinitions
506 are detected and handled. (reported by Neil Haven)
507 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
508 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
510 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
511 after alien stack frames.
512 * bug fix: strings passed to mk{s,d}temp lacked null termination
514 changes in sbcl-1.0.21 relative to 1.0.20:
515 * new feature: the compiler is able to track the effective type of a
516 generic function across method addition and removal.
517 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
518 appropriately typed structure slots without locking.
519 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
520 information like those gathered by TIME using a programming-friendly
522 * new feature: TIME reports time taken even if the form performs a
523 non-local transfer of control.
524 * enhancement: reduced conservativism on GENCGC platforms: on
525 average 45% less pages pinned (measured from SBCL self build).
526 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
527 mutate constant symbols or violate declaimed type of the symbol.
528 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
529 sleeping on the semaphore in heavily contested semaphores.
530 * bug fix: semaphores and condition variables were not interrupt
532 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
533 owned by other threads anymore.
534 * bug fix: FIND on lists called KEY outside the specified
535 subsequence. (reported by budden)
536 * bug fix: LOG doesn't use single-float intermediate results when
537 given mixed integer and double-float arguments, leading to better
538 precision. (reported by Bob Felts)
539 * bug fix: LOG with base zero returned values of inconsistent type.
541 changes in sbcl-1.0.20 relative to 1.0.19:
542 * minor incompatible change: OPTIMIZE qualities
543 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
544 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
545 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
546 * documentation: some slot access efficiency guidelines have been
547 added to the user manual.
548 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
549 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
550 as ASSOC and MEMEBER.
551 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
552 to more efficient EQ-comparison versions more often.
553 * optimization: enhanced derivation of DOLIST iteration variable type
555 * optimization: constant folding of simple (LIST ...) forms as DOLIST
557 * optimization: runtime lookup of function definitions can be
558 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
559 * optimization: compiler is able to derive the return type of
560 (AREF (THE STRING X) Y) as being CHARACTER.
561 * optimization: CLRHASH on empty hash-tables no longer does pointless
562 work. (thanks to Alec Berryman)
563 * optimization: REPLACE deftransforms don't punt when :START1 or
565 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
566 no longer emits a code deletion note. (reported by Andrew
568 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
569 functions with an odd number of &OPTIONAL arguments, a &REST
570 argument, and one or more &KEY arguments at the call site.
571 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
572 arguments appeared at call sites as well.
573 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
574 READ-LINE &co can no longer read from them afterwards. (reported
576 * bug fix: fixed #427: unused local aliens no longer cause compiler
577 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
579 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
580 alien-stack leakage. (reported by Andy Hefner)
581 * bug fix: PROGV signals an error when an attempt to violate declared
582 type of a variable or bind a constant is made.
583 * bug fix: SET signals an error when an attempt to violate declared
584 type of a variable is made.
585 * bug fix: restart computation during the execution of a restart
586 test function no longer causes infinite recursion. (reported by
588 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
589 signals an error. (thanks to Pierre Mai)
590 * bug fix: EXPORT left symbol unexported in conflict situations.
591 (thanks to Michael Weber)
592 * bug fix: correctly handle name conflicts involving CL:NIL.
593 (thanks to Michael Weber)
594 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
595 conflicts arising from USEing package with conflicting symbols
596 correctly. (thanks to Michael Weber)
598 changes in sbcl-1.0.19 relative to 1.0.18:
599 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
600 warnings that go otherwise unhandled will be muffled if they are
601 of the type that's the value of this variable.
602 * optimization: stack allocation is slightly more efficient on x86
604 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
605 where a raw slot always is initialized using the initform whose
606 type is not know sufficiently well a compile-time are now compiled
607 correctly. (reported by John Morrison)
608 * bug fix: compiler no longer makes erronous assumptions in the
609 presence of non-foldable SATISFIES types.
610 * bug fix: stack analysis missed cleanups of dynamic-extent
611 arguments in non-let-converted calls to local functions.
612 * improvements to the Windows port:
613 ** adjusted address spaces for building on both Win32 and
614 Win64. (thanks for John Connors)
615 * fixed some bugs revealed by Paul Dietz' test suite:
616 ** interval arithmetic during type derivation used inexact integer
617 to single-float coercions.
618 ** arithmetic operations involving large integers and single
619 floats give the same results in compiled and interpreted code.
620 ** deriving the result type of COERCE no longer signals an error
621 if the derived type of the second argument is a MEMBER type
622 containing invalid type specifiers.
623 ** ADJOIN with constant NIL as second argument works correctly.
624 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
626 changes in sbcl-1.0.18 relative to 1.0.17:
627 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
628 profiles only the current thread.
629 * minor incompatible change: changes to SYMBOL-VALUE of constants
630 defined with DEFCONSTANT now signal an error.
631 * enhancement: SB-SPROF now has support for wallclock profiling,
632 and is also able to profile specific threads. REPORT output
633 has also additional sorting options.
634 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
636 * optimization: structure allocation has been improved
637 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
638 ** out of line constructors are ~10% faster.
639 ** inline constructors are ~15% faster.
640 ** inline constructors are capable of dynamic extent allocation
641 (generally on x86 and x86-64, in some cases on other platforms
643 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
645 * optimization: file compiler is now able to coalesce non-circular
646 lists, non-base strings, and bit-vectors. Additionally, constants
647 are never referenced through SYMBOL-VALUE at runtime.
648 * optimization: code defining methods on PRINT-OBJECT (and other
649 generic functions in the COMMON-LISP package) now loads faster.
650 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
652 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
653 fasl is now deleted. (reported by Attila Lendvai)
654 * bug fix: READ-LINE always returned NIL for the last line in files.
655 (reported by Yoshinori Tahara)
656 * bug fix: more accurate disassembly annotations of foreign function
657 calls. (thanks to Andy Hefner)
658 * bug fix: trimming non-simple strings and non-string string
659 designators when the there is nothing to trim works properly.
660 (thanks to James Knight)
661 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
662 (thanks to Travis Cross)
663 * fixed some bugs revealed by Paul Dietz' test suite:
664 ** NIL is a valid function name (regression at 1.0.13.38)
665 ** FILL on lists was missing its return value (regression at 1.0.12.27)
666 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
667 fill pointers properly (regression at 1.0.12.23)
668 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
669 displacement indices properly (regression at 1.0.12.23)
671 changes in sbcl-1.0.17 relative to 1.0.16:
672 * temporary regression: user code can no longer allocate closure
673 variable storage on stack, due to bug 419 without explicitly
674 requesting it. Please consult sbcl-devel for advice if you need to
675 use this feature in the meanwhile.
676 * new feature: runtime argument --control-stack-size can be used to
677 adjust thread default control stack size.
678 * enhancement: improved TIME output
679 ** all times are reported using the measured accuracy (milliseconds
680 for real and GC times, microseconds for everything else.)
681 ** processor cycle counts on x86 and x86-64.
682 ** interpreted forms are counted for both evaluator modes.
683 ** number of lambdas converted by the compiler is reported.
684 ** CPU percentage report (computed from real and total run time.)
685 ** more comprehensive run time reporting, using a condenced format
686 ** interperted form, lambda, and page fault counts are omitted
688 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
690 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
691 * optimization: two argument forms of LAST are upto ~10% faster
692 in normal SPEED policies.
693 * optimization: NCONC no longer needs to heap cons its &REST list
694 in normal SPEED policies.
695 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
697 * bug fix: UNION and NUNION work with :TEST-NOT once more,
698 regression since 1.0.9.1. (thanks to Eric Marsden)
699 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
700 since 1.0.15.36. (thanks to Paul Khuong)
701 * bug fix: LAST when always returned the whole list when given a bignum
702 as the second argument.
703 * bug fix: dynamic extent allocation of nested lists and vectors
704 could leak to otherwise accessible parts.
705 * bug fix: invalid optimization of heap-allocated alien variable
707 * bug fix: fasl header checking is less vulnerable to different
708 platform word lengths.
709 * bug fix: more correct assembler syntax for GNU binutils
710 2.18.50.0.4 support. (thanks to Marijn Schouten)
711 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
713 * bug fix: the fopcompiler can handle LOCALLY forms (with no
714 declarations) successfully. (reported by Attila Lendvai)
716 changes in sbcl-1.0.16 relative to 1.0.15:
717 * minor incompatible change: revert the changes to sb-posix's error
718 signaling added in 1.0.14.
719 * minor incompatible change: change PROBE-FILE back to returning
720 NIL whenever we can't get a truename, as was the case before 1.0.14.
721 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
722 inherits from ERROR instead of just CONDITION.
723 * new feature: SB-INTROSPECT can provide source locations for instances
724 as well. (thanks to Tobias Rittweiler)
725 * optimization: binding special variables now generates smaller code
726 on threaded platforms.
727 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
728 and cases where no :TEST is given but the compiler can infer that
729 the element to search is of type (OR FIXNUM (NOT NUMBER)).
730 * optimization: better LOGNOT on fixnums.
731 * optimization: modular arithmetic for a particular requested width
732 is implemented using a tagged representation unless a better
733 representation is available.
734 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
735 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
736 for wellformedness and returns a specialized vector. (reported by
737 Francois-Rene Rideau)
738 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
739 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
740 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
741 unscheduling timer at the same time as another timer fires.
742 * bug fix: don't reschedule timers for dead threads.
743 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
744 * bug fix: copying output from RUN-PROGRAM to a stream signalled
745 bogus errors if select() was interrupted.
746 * enhancement: add support for fcntl's struct flock to SB-POSIX.
748 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
749 * enhancement: cleaner backtraces for interactive interrupts, as
750 well as other cases where the interesting frames used to be
751 obscured by interrupt handling frames.
752 * enhancement: untracing a whole package using (UNTRACE "FOO") is
753 now supported, and tracing a whole package using (TRACE "FOO") now
754 traces SETF-functions as well.
755 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
756 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
757 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
758 * unreadably printed representation of hash-tables now includes
760 * bug fix: partially fixed #188: type propagation from assignments
761 is now more efficient.
762 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
763 'DOUBLE-FLOAT) are not flushable.
764 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
765 full address of the object, and none of the tag bits.
766 * bug fix: readably printing hash-tables now respects other printer
767 control variables. (reported by Cedric St-Jean)
768 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
769 keyword with MAKE-HASH-TABLE.
770 * bug fix: export SB-POSIX:MKSTEMP.
771 * bug fix: SORT was not interrupt safe.
772 * bug fix: XREF accounts for the last node of each basic-block as
774 * bug fix: MAKE-INSTANCE optimizations interacted badly with
775 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
776 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
777 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
778 create obsolete instances in the case of redefinition or
779 obsoletion of a superclass. (thanks to Andy Hefner)
780 * bug fix: Support for the Alpha architecture has been revived; it had
781 suffered somewhat from lack of maintenance since sbcl-1.0.
782 * improvements to the Windows port:
783 ** The system detects the codepage to use at startup, instead of
784 using the value from the saved core. (thanks to Kei Suzuki)
786 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
787 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
788 (see documentation for details.)
789 * revived support for OpenBSD (contributed by Josh Elsasser)
790 * partially fixed bug #108: ROOM no longer suffers from occasional
791 (AVER (SAP= CURRENT END)) failures.
792 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
793 bodies no longer cause a WARNING to be signalled. (reported by
795 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
796 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
797 the bug in TRUNCATE.) (reported by Michael Weber)
798 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
799 no samples. (reported by Andy Hefner)
800 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
801 no longer appear as (NIL ...) frames in backtraces.
802 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
803 is now actually exported from SB-EXT as documented. (reported by
805 * bug fix: sb-aclrepl now correctly understands how to inspect
806 single-floats on 64-bit platforms where single-floats are not boxed.
807 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
808 yet been finalized. (reported by Levente Meszaros)
809 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
810 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
811 SBCL-specific optimize qualities.
813 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
814 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
815 an executable in the search path, and does so in the child
816 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
817 been removed; it can be found in the CVS history, for somebody who
818 needs that search behavior (see the manual).
819 * minor incompatible change: compiler policy re. weakening type
820 checks has changed: now type checks are weakened only if SAFETY < 2
822 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
823 unparsing of directory pathnames as files. Analogously,
824 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
825 filename to parse into a directory pathname.
826 * enhancement: implicit generic function creation now signals a
827 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
828 users can bind handlers for and muffle around calls to LOAD.
829 * enhancement: RUN-PROGRAM allows unicode arguments and environments
830 to be used (using the default stream external format), and allows
831 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
832 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
833 strings and vectors whose element-type or simplicity is not fully
834 known at compile-time.
835 * optimization: STRING-TRIM and related functions no longer allocate
836 a new string when no trimming needs to be performed. These functions
837 are also faster than before when the input string has been declared
839 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
840 * optimization: READ-LINE is significantly faster for files containing
842 * optimization: non-open coded uses of character comparison operators
843 (e.g. char=) no longer cons when called with more than one parameter
844 on platforms supporting dynamic-extent allocation.
845 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
846 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
847 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
849 * bug fix: some sequence functions elided bounds checking when
851 * bug fix: too liberal weakening of union-type checks when SPEED >
853 * bug fix: more bogus fixnum declarations in ROOM implementation
856 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
857 * new feature: MAKE-HASH-TABLE now experimentally accepts a
858 :SYNCHRONIZED argument, which makes the hash-table safe for
859 concurrent accesses (but not iteration.) See also:
860 SB-EXT:WITH-LOCKED-HASH-TABLE, and
861 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
862 * optimization: CONCATENATE on strings is an order of magnitude faster
863 in code compiled with (> SPEED SPACE).
864 * optimization: SUBSEQ is ~50% faster on lists.
865 * bug fix: bug 417 fixed -- source location reporting is now more robust.
866 * bug fix: SUBSEQ on a list will now correctly signal an error if if
867 END is smaller then START.
868 * bug fix: SB-PROFILE will no longer report extra consing for nested
869 calls to profiled functions.
870 * bug fix: ROOM implementation had bogus fixnum declarations which
871 could cause type-errors when calling ROOM on large images.
872 * bug fix: if file compilation is aborted, the partial fasl is now
873 deleted, and COMPILE-FILE returns NIL as the primary value.
874 * bug fix: number of thread safety issues relating to SBCL's internal
875 hash-table usage have been fixed.
876 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
877 be returned from its body when the values were being returned
878 using unknown-values return convection and the W-P-O was wrapped
879 inside an UNWIND-PROTECT.
880 * bug fix: sb-posix should now compile again under Windows, enabling
883 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
884 * incompatible change: hash-table accessor functions are no longer
885 automatically protected by locks. Concurrent accesses on the same hash-table
886 from multiple threads can give inconsistent results or even corrupt the
887 hash-table completely. Multi-threaded applications should do their own
888 locking at the correct granularity. In the current implementation it is
889 still safe to have multiple readers access the same table, but it's not
890 guaranteed that this property will be maintained in future releases.
891 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
892 and will signal an error at runtime.
893 * enhancement: SB-THREAD package now exports a semaphore interface.
894 * enhancement: CONS can now stack-allocate on x86 and
895 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
897 * enhancement: nested lists can now be stack allocated on
898 platforms providing stack allocation support.
899 * enhancement: dynamic-extent support has been extended to support
900 cases where there are multiple possible sources for the stack
902 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
903 if the mutex is uncontested on Linux.
904 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
905 as specified by the CLHS. (thanks to Tobias Rittweiler)
906 * bug fix: NaN comparison now works on x86-64.
907 * bug fix: CLOSE :ABORT T on a stream with pending output now
909 * bug fix: instances of non-standard metaclasses using standard
910 instance structure protocol sometimes missed the slot type checks
912 * bug fix: known functions can be inlined in high-debug code.
914 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
915 * minor incompatible change: the MSI installer on Windows no longer
916 associates .lisp and .fasl files with the installed SBCL.
917 * minor incompatible change: :UNIX is no longer present in *FEATURES*
918 on Windows. (thanks to Luis Oliviera)
919 * new feature: SB-CLTL2 contrib module now implements
920 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
921 * optimization: scavenging weak pointers is now more efficient,
922 requiring O(1) instead of O(N) per weak pointer to identify
923 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
924 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
925 method bodies using constant slot-names when the first argument is
926 a specializer parameter for the method.
927 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
928 names, when the class of the instance is a direct instance
929 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
930 as slow as the constant slot-name case.)
931 * optimization: member type construction is now O(N) instead
933 * optimization: UNION and NUNION are now O(N+M) for large
934 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
936 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
937 now more readable in environments like Slime which display it.
938 (thanks to Tobias C. Rittweiler)
939 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
940 was able to infer the correct argument type for the object on which
941 the CAS operation was being performed.
942 * bug fix: copy propagation interfered with parallel assignment
943 semantics in local calls. (reported by Paul Khuong)
944 * bug fix: the signed modular fixnum shift compiled to wrong code on
945 x86 and x86-64. (spotted by a slight modification to some of
948 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
949 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
950 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
951 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
953 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
954 and generic function now print the object identity for anonymous
955 instances. (thanks to Attila Lendvai)
956 * enhancement: as an extension to MOP, SBCL now supports SETF of
957 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
958 (thanks to Attila Lendvai)
959 * enhancement: sb-cover has an alternate annotation mode which puts
960 the form annotations at the car of the form, instead of annotating
961 it completely. The benefit of this mode is that it shows better
962 which forms were instrumented by the compiler.
963 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
964 by printer control variables. (reported by Dan Corkill)
965 * bug fix: system leaked memory when delayed output was performed by
966 the OS in smaller chunks then expected. (thanks to David Smith)
967 * bug fix: system leaked memory when file streams were not closed
969 * bug fix: large objects written to slow streams that were modified
970 after the write could end up with the modified state written to
971 the underlying file descriptor.
972 * bug fix: multiple threads operating in parallel on the same stream
973 could cause buffer-overflows.
974 * bug fix: source location information is stored correctly
975 (broken since 1.0.6). This bug would generally show up as the
976 Slime debugger highlighting the wrong form when the sldb-show-source
978 * bug fix: Branch forms are again annotated as branches in the sb-cover
980 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
981 on x86-64. (reported by Gregory Vanuxem)
982 * bug fix: EQUALP could return wrong results for structures with raw
983 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
984 word). (reported by Vjacheslav Fyodorov)
985 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
988 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
989 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
990 atomic compare-and-swap operations on threaded platforms.
991 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
992 allows assigning a global minimum value to optimization qualities
993 (overriding proclamations and declarations).
994 * enhancement: closed over variables can be stack-allocated on x86
996 * performance bug fix: GETHASH and (SETF GETHASH) are once again
998 * optimization: slot definition lookup is now O(1). This speeds up
999 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1000 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1001 * optimization: ASSOC and MEMBER can now be open-coded for all
1002 combinations of keyword arguments when second argument is constant
1003 and SPEED >= SPACE. In other cases a specialized version is
1005 * bug fix: using obsoleted structure instances with TYPEP and
1006 generic functions now signals a sensible error.
1007 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1008 (reported by Kristoffer Kvello)
1009 * bug fix: backtrace construction is now more careful when making
1010 lisp-objects from pointers on the stack, to avoid creating bogus
1011 objects that can be seen by the GC.
1012 * bug fix: defaulting of values in contexts expecting more than 7
1013 variables now works on x86-64. (reported by Christopher Laux)
1014 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1016 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1017 as the property-list of a symbol.
1018 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1019 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1020 situations requested, are once again file-compileable. (reported
1023 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1024 * MOP improvement: support for user-defined subclasses of
1025 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1026 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1027 the expansion of DEFMETHOD, is responsible for generating a form
1028 which creates a list of specializers when evaluated. Additional
1029 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1030 debugging and introspective support.
1031 * minor incompatible change: the (unsupported) spinlock interface
1032 has changed: free spinlock now has the value NIL, and a held spinlock
1033 has the owning thread as its value.
1034 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1035 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1037 * enhancement: name of a socket-stream is now "a socket" instead of
1038 "a constant string".
1039 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1040 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1041 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1042 for generic functions. (Thanks to Tobias C. Rittweiler)
1043 * optimization: bignum printing speed has been improved by 20-40%
1044 (depending on the bignum size.)
1045 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1047 * bug fix: the cache used by the CLOS to store precomputed effective
1048 methods, slot offsets, and constant return values is now thread and
1050 * bug fix: generic function dispatch function updating is now thread
1051 and interrupt safe (in the sense that the known issues have been
1053 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1054 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1055 * bug fix: asdf systems with dependencies to the SB-POSIX or
1056 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1057 * bug fix: interrupt safety of applicable method computation has been
1060 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1061 * new contrib: sb-cover, an experimental code coverage tool, is included
1062 as a contrib module.
1063 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1064 significantly faster.
1065 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1066 produce more efficient code on x86-64 if the compiler can determine
1067 that (+ INDEX <constant>) does not require a bounds check and FOO
1068 has an element type at least 8 bits wide.
1069 * enhancement: a new, experimental synchronous timeout facility is
1070 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1071 * enhancement: when a symbol name conflict error arises, the
1072 conflicting symbols are always printed with a package prefix.
1073 (thanks to Kevin Reid)
1074 * enhancement: stepping is now once again supported on the SPARC and
1075 MIPS platforms. (It is also now more likely to work on CheneyGC
1077 * enhancement: sb-sprof can now also track and report accurate call
1079 * bug fixes: the treatment of non-standard subclasses of
1080 SB-MOP:SPECIALIZER is more correct.
1081 * incompatible change: PURIFY no longer copies the data from the
1082 dynamic space into the static and read-only spaces on platforms
1083 that use the generational garbage collector
1084 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1086 * bug fix: GC race condition occasionally resulting in crashes with
1087 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1089 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1091 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1092 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1093 * bug fix: an asynchronous interrupt could previously leave the
1094 system running with GC inhibited.
1095 * bug fix: a DECLARE form evaluated at top-level now causes an error
1096 rather than silently (or verbosely) returning NIL.
1097 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1098 result in a error being signalled due to source form lookup errors.
1099 (reported by Peter Graves)
1101 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1102 * incompatible change: removed writer methods for host-ent-name,
1103 host-ent-addresses -- changing the values did not update the DNS
1105 * minor incompatible change: changed experimental JOIN-THREAD interface
1106 * documentation: the manual now lists reader and writer methods
1107 in class slot documentation sections. (thanks to Richard M Kreuter)
1108 * documentation: unwinding from asyncronous events has been
1109 documented as unsafe.
1110 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1111 in multithreaded application code.
1112 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1113 platforms. (thanks to James Anderson for the optimization hint)
1114 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1116 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1117 variants no longer cons.
1118 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1119 their NOT- variants no longer cons.
1120 * optimization: EQUAL hash tables no longer use SXHASH for objects
1121 of all data types, but instead use an EQL hash for types for which
1122 EQUAL is the same as EQL.
1123 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1124 are significantly faster.
1125 * optimization: new STRING-OUTPUT-STREAM implementation is much
1126 faster for large outputs and conses 30% less on average.
1127 * enhancement: XREF information is now collected for references made
1128 to global variables using SYMBOL-VALUE and a constant argument.
1129 * enhancement: SIGINT now causes a specific condition
1130 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1131 * bug fix: FILE-POSITION used to signal an error in some cases where
1132 ANSI requires it to return NIL.
1133 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1134 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1135 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1137 * bug fix: bad type declaration in the CLOS implementation has
1138 been fixed. (reported by James Anderson)
1139 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1140 (thanks to Lutz Euler)
1141 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1142 required by the CLHS. (reported by Samium Gromoff)
1143 * bug fix: dead unbound variable references now signal an error.
1144 (reported by Marco Monteiro)
1145 * bug fix: / with an unused value was being deleted in safe code.
1146 (thanks to Marco Monteiro and Kevin Reid)
1147 * bug fix: number of characters that can be written onto a single
1148 line in a file is unlimited.
1149 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1150 been fixed by inhibiting interrupts for when GC is disabled.
1151 * bug fix: some interrupt safety issues with GETHASH, (SETF
1152 GETHASH), CLRHASH and REMHASH have been fixed.
1153 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1154 specifier no longer causes infinite recursion.
1155 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1156 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1157 * bug fix: an &environment argument with the correct variable information
1158 is passed to macros that are expanded during byte compilation.
1159 (reported by Samium Gromoff)
1160 * bug fix: a logic error was causing the hash function for bignums to
1161 have excessive amounts of collisions. (reported by Faré Rideau)
1162 * bug fix: modifying the contents of an array could change the return
1163 value of SXHASH on that array, which is only allowed for strings
1164 and bit vectors. (bug introduced in 0.9.16)
1165 * improvement: the x86-64/darwin port now passes all tests (except
1166 for the debugger tests) but should still be considered
1167 experimental until this is fixed.
1168 * improvement: a style-warning is signaled for CASE (etc) clauses with
1169 duplicate keys. (thanks to Kevin Reid)
1170 * improvement: macos/x86 and macos/x86-64 now use mach exception
1171 handlers for dealing with illegal instructions (for trapping and
1172 error handling) and memory protection violations (for GC).
1174 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1175 * new platform: experimental support for x86-64/darwin (MacOS).
1176 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1177 and getnameinfo sockets functions are used instead of gethostbyaddr
1178 and gethostbyname, on platforms where the newer functions are available.
1179 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1181 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1182 don't print the startup banner, but behave as if --noinform was passed
1183 as a command line argument. (thanks to Kevin Reid)
1184 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1185 * optimization: code using alien values with undeclared types is much faster.
1186 * optimization: the compiler is now able to open code SEARCH in more cases.
1187 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1188 * bug fix: using standardized COMMON-LISP special variables as loop
1189 variables no longer signals bogus package lock violations. (reported
1191 * bug fix: declaring local loop variables to be of a range-limited type
1192 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1193 (reported by Andras Simon)
1194 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1195 bugs remain on x86-64.)
1196 * bug fix: the #= and ## reader macros now interact reasonably with
1197 funcallable instances.
1198 * bug fix: type-checks for function arguments were compiled using the
1199 compiler policy settings of the wrong lexical environment (in 1.0.2
1201 * bug fix: SHADOW accepts characters as string designators, as required
1202 by the spec (thanks to Eric Marsden)
1203 * bug fix: fixed GC safety issues when foreign functions are called with
1204 non-base strings as arguments
1205 * bug fix: more consistent error output for fatal-compiler-warnings, like
1207 * bug fix: functions with proper names were showing up as NIL in
1208 backtraces (reported by Edi Weitz, regression in 1.0.2)
1210 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1211 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1212 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1213 produce more efficient code on the x86 if the compiler can determine
1214 that (+ INDEX <constant>) does not require a bounds check and FOO
1215 has an element type at least 8 bits wide.
1216 * bug fix: references to undefined variables are handled the same way
1217 in toplevel forms as in the normal compiler
1218 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1220 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1221 (thanks to Jon Buller)
1222 * improvement: faster compilation times for complex functions
1223 * improvement: added readlink support to SB-POSIX (thanks to Richard
1226 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1227 * improvement: experimental support for mach exception handling on
1228 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1230 * improvement: support for GBK external format.
1231 (thanks to Chun Tian (binghe))
1232 * improvement: the debugger now displays variables that have been closed
1233 over, in code compiled with (DEBUG 2) or higher
1234 * improvement: support for executable cores on NetBSD (thanks to
1236 * new feature: added a RESTART-FRAME debugger command
1237 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1238 be used to provide an implementation for FILE-POSITION on Gray streams
1239 (thanks to Eric Marsden)
1240 * new feature: add syslog, openlog and closelog support to SB-POSIX
1241 (thanks to Richard Kreuter)
1242 * optimization: the function call overhead in code compiled with
1243 a high DEBUG optimization setting is significantly
1244 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1245 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1246 (thanks to Tony Martinez)
1247 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1248 evaluated once (reported by Kevin Reid)
1249 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1250 works again (thanks to Kilian Sprotte)
1251 * bug fix: an error is signaled for tagbodies with duplicate tags
1252 (thanks to Stephen Wilson)
1253 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1254 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1255 stack frames from alien callbacks.
1256 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1257 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1258 65k pages (thanks to David Woodhouse)
1259 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1261 changes in sbcl-1.0.1 relative to sbcl-1.0:
1262 * new platform: FreeBSD/x86-64, including support for threading.
1263 * new feature: the compiler stores cross-referencing information
1264 about function calls (who-calls), macroexpansion (who-macroexpands)
1265 and special variables (who-binds, who-sets, who-references) for code
1266 compiled with (< SPACE 3). This information is available through the
1267 sb-introspect contrib.
1268 * new feature: users may subclass SEQUENCE, and have instances of
1269 these classes interoperate with standard Common Lisp functions if
1270 a number of methods are defined. (This feature is experimental
1271 and the interface subject to change based on feedback from SBCL
1272 users and the general community)
1273 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1274 x86/x86-64, rather than the previous fixed depth of 8
1275 * improvement: another pthread back-end of mutex "pthread-futex".
1276 * bug fix: non-ascii command-line arguments are processed correctly
1277 (thanks to Yaroslav Kavenchuk)
1278 * bug fix: non-required arguments were not passed correctly when a method
1279 defined using DEFMETHOD was called from a mop-generated method using
1280 CALL-NEXT-METHOD (reported by Pascal Costanza)
1281 * bug fix: recursion is now permitted in accessors through
1282 SLOT-UNBOUND. (reported by Pascal Costanza)
1283 * bug fix: an error was signaled at startup if the HOME environment
1284 variable was defined, but had an empty value (reported by Peter Van Eynde)
1285 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1286 signal a PROGRAM-ERROR, not a BUG.
1287 * bug fix: SB-POSIX:READDIR works when built with large file support.
1288 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1290 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1291 for better automatic indentation support. (thanks to Matt Pillsbury)
1292 * optimization: loading generic functions no longer takes O(n^2) time,
1293 proportional to the amount of methods in the generic function
1294 (reported by Todd Sabin and Jeremy Brown)
1295 * optimization: the FIND and POSITION family of sequence functions
1296 are significantly faster on arrays whose element types have been
1298 * improvements to the Windows port:
1299 ** Intermittent heap corruption problems have been fixed. (thanks
1300 to Alastair Bridgewater)
1301 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1303 ** Lisp is able to unwind foreign exception frames from alien
1304 callbacks. (thanks to Alastair Bridgewater)
1306 changes in sbcl-1.0 relative to sbcl-0.9.18:
1307 * improvement: experimental support for threading on FreeBSD/x86.
1308 (thanks to NIIMI Satoshi)
1309 * improvement: runtime option --dynamic-space-size can be used
1310 to set the size of the dynamic space reserved on startup.
1311 * improvement: floating point modes in effect are now saved in
1312 core, and restored on startup.
1313 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1314 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1315 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1316 threads are not running after *SAVE-HOOKS* have run.
1317 * improvement: writes to CLOS instance slots are type-checked in code
1318 compiled with (SAFETY 3)
1319 * improvement: floating-point exception handling on FreeBSD (thanks to
1321 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1322 (thanks to Zach Beane)
1323 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1325 * improvement: added support for the Shift-JIS external format.
1326 (contributed by NIIMI Satoshi)
1327 * improvement: callbacks are supported on Linux/PPC. (thanks to
1329 * bug fix: compiler bug triggered by a (non-standard) VALUES
1330 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1331 * bug fix: file compiler no longer confuses validated and already
1332 dumped structurres. (reported by Kaersten Poeck)
1333 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1334 fill-pointer signals a type-error as required. (thanks to
1336 * bug fix: disassemly of funcallable instances works.
1337 * bug fix: single stepping on PPC.
1338 * bug fix: fix thread-safety problems in the type system (generally
1339 manifesting as nonsensical errors like "STRING is a bad type specifier
1340 for sequences" or "The value 1 is not of type FIXNUM")
1341 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1342 (reported by Josip Gracin)
1343 * bug fix: an error is signaled for attempts to displace arrays with
1344 incompatible element types (thanks to Mario Mommer)
1345 * bug fix: more correct handling of wide characters in debug info
1346 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1347 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1348 and don't cause extra consing
1349 * optimization: MAP and MAP-INTO are significantly faster on vectors
1350 whose elements types have been declared.
1351 * Improvements to SB-SPROF:
1352 ** Support for allocation profiling
1353 ** Reduced profiling overhead, especially for long profiling runs
1354 * Improvements to the Windows port:
1355 ** floating point exceptions are now reported correctly.
1356 ** stack exhaustion detection works partially.
1357 ** more accurate GET-INTERNAL-REAL-TIME.
1358 ** better RUN-PROGRAM behaviour in case of errors in the child
1360 ** PROBE-FILE now simplifies pathnames correctly.
1361 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1362 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1363 1st 1970 (although time timezone data will be unreliable).
1364 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1366 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1367 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1368 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1370 * bug fix: two potential GC deadlocks affecting threaded builds.
1371 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1372 returns T (reported by Anton Kazennikov)
1373 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1374 with non-variable places
1375 * bug fix: remove a race condition in the setting of
1376 funcallable-instance functions, this should make threaded CLOS
1377 code more stable against memory faults.
1378 * bug fix: corruption of specials when unbinding is interrupted by an
1379 asynchronous unwind (reported by Hannu Koivisto)
1380 * improvement: the debugger will now also display local variables that
1381 are only used once, for code compiled with a DEBUG optimization quality
1384 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1385 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1386 * incompatible change: External-format support for FFI calls. The
1387 SB-ALIEN:C-STRING no longer implies an ASCII
1388 external-format. Instead the string is subject to external-format
1389 conversion. Additionally return values of type SB-ALIEN:C-STRING
1390 are by default of type (SIMPLE-ARRAY CHARACTER), not
1391 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1392 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1393 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1394 * incompatible change: SB-EXT package no longer contains the
1395 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1396 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1398 * incompatible change: the single-stepper is no longer available
1399 on Alpha, Mips and Sparc platforms.
1400 * minor incompatible change: the direct superclasses of
1401 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1402 not (STANDARD-OBJECT FUNCTION). This makes the
1403 class-precedence-lists of GENERIC-FUNCTION and
1404 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1406 * minor incompatible change: the default stream external format on
1407 non-unicode SBCL is no longer detected from the locale, but is always
1409 * new feature: Add a version of evaluator that uses an interpreter instead
1410 of the compiler. EVAL still uses the compiler by default, to switch it
1411 to use the interpreter, set the value of the variable
1412 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1413 * minor incompatible change: the single-stepper REPL has been merged
1414 with the normal debugger (see the "Stepping" heading of the debugger help
1415 for more details). The debugger command STEP will no longer switch
1416 to the single-stepper REPL.
1417 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1418 for a type now works.
1419 * bug fix: loading of default sysinit file works. (thanks to Leonid
1421 * bug fix: better detection of circularities in the file-compiler.
1422 (reported by Marco Monteiro)
1423 * bug fix: the CL pathname functions now work with files that have
1424 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1425 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1426 systems with Unix98 pty semantics.
1427 * bug fix: ASDF-INSTALL will now work with bsd tar.
1428 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1430 * bug fix: timers expiring in dead threads no longer cause a
1431 type-error (reported by Paul "Nonny Mouse").
1432 * bug fix: thanks to more lightweight single-stepper instrumentation,
1433 code compiled with (DEBUG 3) will compile and execute significantly faster,
1434 and will have more accurate type-inferencing than before
1435 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1436 whose bindings are modified
1437 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1438 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1439 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1440 CL:SOFTWARE-VERSION with proper version
1442 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1443 * feature: implemented the READER-METHOD-CLASS and
1444 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1445 as specified by AMOP.
1446 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1448 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1449 (thanks to Lutz Euler)
1450 * optimization: hashing of general arrays and vectors has been
1451 improved. (reported by Any Fingerhut)
1452 * enhancement: SB-INTROSPECT is now able to find definitions of
1453 profiled functions. (thanks to Troels Henriksen)
1454 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1455 as well, allowing compiler-macros for SETF-functions to expand.
1456 * enhancement: step-instrumentation no longer wraps known
1457 single-value functions with multiple-value context, allowing
1458 better type inference.
1459 * fixed bug #337: use of MAKE-METHOD in method combination now works
1460 even in the presence of user-defined method classes. (reported by
1461 Bruno Haible and Pascal Costanza)
1462 * fixed bug #339(c): if there are applicable methods not part of any
1463 long-form method-combination group, call INVALID-METHOD-ERROR.
1464 (reported by Bruno Haible)
1465 * fixed bug #361: the :FUNCTION initarg in the protocol for
1466 initialization of methods can now be used to override
1467 internally-produced optimized functions. (reported by Bruno
1469 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1470 system-provided lambda expression no longer cause warnings about
1471 unbound #:|pv-table| symbols.
1472 * bug fix: improved the handling of type declarations and the
1473 detection of violations for keyword arguments with non-constant
1475 * bug fix: potentially erronous calls to PATHNAME and
1476 MERGE-PATHNAMES were being flushed in some cases.
1477 (reported by Richard Kreuter)
1478 * bug fix: compiled calls to TYPEP were mishandling obsolete
1479 instances. (reported by James Bielman and Attila Lendvai)
1480 * bug fix: format strings with ~> without matching ~< no longer
1481 trigger an AVER, but signal an understandable error instead.
1482 (reported by Antonio Martinez)
1483 * bug fix: specifying an output-file without a pathname-type for
1484 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1485 of input-file instead of "fasl". (reported by Robert Dodier)
1486 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1487 (reported by James Y Knight).
1488 * bug fix: compiler-macros-function did not consider the environment
1489 argument for shadowing by local functions.
1490 * bug fix: compiler-macros expansion was inhibited by local INLINE
1492 * bug fix: inline expansions of known functions were subject to
1493 step-instrumentation in high debug policies, leading to problems
1494 with type-inference.
1495 * bug fix: compiler failed to differentiate between different CONS
1496 types in some cases.
1497 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1498 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1499 * bug fix: #368: incorrect use of expressed vs. upgraded array
1501 * bug fix: #306a: more precise unions of array types.
1502 * thread-safety improvements:
1503 ** CONDITION-WAIT could return early on Linux, if the thread was
1504 interrupted and subsequently continued with SIGCONT.
1505 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1507 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1508 * added support for the ucs-2 external format. (contributed by Ivan
1510 * minor incompatible change: pretty printing of objects of type
1511 (cons symbol) is, in the default pprint-dispatch-table, now
1512 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1514 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1515 called later in a class's lifetime, possibly as late as when the
1516 first instance of the class is created. Previously,
1517 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1518 class became finalizeable.
1519 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1520 for multibyte external-format streams. (thanks to "vbzoli")
1521 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1522 with :ALLOCATION :CLASS inherited from superclasses of the
1524 * fixed bug: anonymous classes can now be created using the :NAME
1525 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1526 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1527 * fixed bug: core-files saved with :EXECUTABLE T can again be
1528 executed when SBCL_HOME isn't set. (reported by James Knight)
1529 * fixed bug: toplevel LOCALLY forms with declarations could
1530 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1531 * fixed bug: printing from several different threads using different
1532 values of *print-case* could cause invalid output, due to
1533 some internal special variables of the printer not being bound
1534 thread-locally (reported by Max Mikhanosha)
1535 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1536 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1537 (reported by Pascal Costanza)
1538 * fixed bug: FINALIZE-INHERITANCE is called from
1539 REINITIALIZE-INSTANCE on classes when the class has previously
1540 been finalized, as required by AMOP.
1541 * minor code generation optimizations:
1542 ** better register allocation in CLOS dispatching functions
1543 ** overflow detection when coercing signed bytes to fixnums on x86-64
1544 ** is now implemented with one IMUL instruction instead of three shifts
1545 ** more efficient bit-vector access on x86 and x86-64
1546 ** more efficient access to raw structure slots on x86 and x86-64
1547 * fixed some bugs revealed by Paul Dietz' test suite:
1548 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1549 return its argument.
1551 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1552 * feature: thread support on Solaris/x86, and experimental thread support
1554 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1556 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1557 default method for SLOT-UNBOUND.
1558 * minor incompatible change: prevent the user from specializing the
1559 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1560 somewhat counter to the intent of the protocol, I (CSR) think, and
1561 additionally it just doesn't work in SBCL as currently
1562 implemented, thanks to optimizations (that are always valid for
1563 the other three SLOT-VALUEish functions, but not for the setter).
1564 * minor incompatible change: the :SB-LDB feature is now enabled by
1565 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1566 the low-level debugger.
1567 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1568 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1569 down to an SB-SYS:FD-STREAM, allowing direct communication in
1570 more cases. Temporary files and pipes are still used as a fallback
1572 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1573 on the non-reentrant C functions localtime(3) and gmtime(3).
1574 * bug fix: global optimization policy was not visible in LOCALLY and
1576 * bug fix: class objects can be used as specializers in methods.
1577 (reported by Pascal Costanza)
1578 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1579 with a type error. (reported by blitz_ on #lisp)
1580 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1581 failed with a type error. (reported by Pascal Bourguignon)
1582 * bug fix: merging pathnames against defaults with :DIRECTORY
1583 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1584 (reported by James Y Knight)
1585 * bug fix: saving large (>2GB) cores on x86-64 now works
1586 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1587 constant index and a (simple-array (signed-byte 32)) array
1588 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1589 error (patch by Robert J. Macomber)
1590 * feature: TIME now displays the amount of run-time spent in GC
1591 * bug fix: The debugger now does a better job of respecting
1592 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1593 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1594 workaround for bug 403.)
1595 * bug fix: floating point exception handling now works on FreeBSD
1596 (thanks to NIIMI Satoshi)
1597 * fixed some bugs revealed by Paul Dietz' test suite:
1598 ** MISC.641: LET-conversion were not supposed to work in late
1600 * improvements to the Win32/x86 port:
1601 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1602 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1604 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1605 * new feature: source path information is generated for macro-expansion
1606 errors for use in IDE's like Slime (thanks to Helmut Eller)
1607 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1608 * bug fix: compiler does not loop forever on an invalid type in
1610 * improvement: compilation of most CLOS applications is significantly
1612 * optimization: added a limited bytecode compiler for simple toplevel
1613 forms, speeding up compilation and FASL loading
1614 * bug fix: the statistical profiler now properly distinguishes anonymous
1617 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1618 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1619 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1620 into subclasses of the finalized class. Now user calls to
1621 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1622 system return before any subclasses are finalized.
1623 * minor incompatible change: The reader no longer ignores errors
1624 regarding non-existent packages in #+ and #- feature tests.
1625 * new feature: command line options --no-sysinit, --no-userinit to
1626 inhibit loading the corresponding init files
1627 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1628 for sending data through UDP sockets (thanks to François-René Rideau)
1629 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1630 error is signalled instead (thanks to François-René Rideau)
1631 * minor incompatible change: Error signalling behaviour of lexical
1632 operations violating package locks has changed slightly. Refer to
1633 documentation on package locks for details.
1634 * enhancement: EVAL can process IF-expressions without resorting to the
1636 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1637 constant-folded properly due to missing out-of-line functions.
1638 (reported by Mika Pihlajamäki)
1639 * bug fix: LISTEN sometimes returned T even in cases where no data was
1640 immediately available from the stream
1641 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1642 were reversed. (reported by Levente Mészáros)
1643 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1644 when given a vector displaced to an adjustable array. (reported
1646 * bug fix: derivation of float boundaries from numbers outside the
1647 appropriate float range (reported by John Wiseman)
1648 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1650 * bug fix: precomputing cache entries for generic functions with
1651 some subclasses of specializers as yet invalid does not attempt to
1652 fill a cache line with a negative offset. (reported by Levente
1654 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1655 allow condition class objects as arguments to DOCUMENTATION and
1656 (SETF DOCUMENTATION); only find and set documentation for
1657 structure names for the STRUCTURE doc-type. (suggested by Gary
1659 * improvements to the Win32/x86 port:
1660 ** (user-homedir-pathname) and default initialization file
1661 locations now know about the user's "Documents and Settings"
1662 directory (thanks to Yaroslav Kavenchuk)
1663 ** run-program is implemented (thanks to Mike Thomas)
1664 ** sockets support (thanks to Timothy Ritchey)
1665 ** better backtrace support (thanks to Alastair Bridgewater)
1666 ** sb-grovel supported
1667 ** asdf-install and sb-posix work somewhat
1668 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1669 * improvements to the Solaris/x86 port:
1670 ** works on Solaris 11/Solaris Express
1671 ** floating-point exception handling support
1672 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1673 * fixed some bugs revealed by Paul Dietz' test suite:
1674 ** REMOVE-METHOD returns its generic function argument even when
1675 the method is not one of the generic functions' methods.
1676 ** objects declared as MEMBER types can be admissible arguments to
1677 structure accessors.
1678 ** printing characters should simply be printed by the FORMAT ~:C
1680 ** compiler failure when compiling functions with hairy constant
1681 defaults for optional parameters.
1682 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1683 function, which is already optimized.
1685 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1686 * new platform: experimental support for SBCL x86/Darwin, including
1687 MacOS X 10.4.5 on Intel.
1688 * new feature: Unicode character names are now known to the system
1689 (through CHAR-NAME and NAME-CHAR).
1690 * new feature: the filesystem location of SBCL's core file is
1691 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1692 * minor incompatible change: the contrib modules SB-POSIX and
1693 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1694 this change is to make it easier to distribute
1695 location-independent binaries.
1696 * bug fix: as implied by AMOP, standardized classes no longer have
1697 slots named by external symbols of public packages. (reported by
1699 * optimization: calling functions via constant symbols -- as in
1700 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1701 via the function object as in (FUNCALL #'FOO).
1702 * optimization: on x86 and x86-64, the calling convention for the
1703 case of dealing with an unknown number of values has been altered
1704 to be friendlier to the prediction heuristics implemented,
1705 particularly with reference to CALL and RET pairing. (thanks to
1706 Alastair Bridgewater)
1707 * optimization: on x86, the code for access to thread-local symbol
1708 values and binding/unbinding of thread-local symbols is smaller.
1709 (thanks to Alastair Bridgewater)
1710 * enhancement: CONSTANTP is now able to determine constantness of
1711 more complex forms, including calls to constant-foldable standardized
1712 functions and some special forms beyond QUOTE.
1713 * fixed bug: occasional GC crashes on Solaris/x86
1714 * optimization: x86-64 supports stack allocation of results of simple
1715 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1716 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1717 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1718 (thanks to James Knight)
1719 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1720 by the standard (thanks to Stephen Compall)
1722 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1723 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1724 be used for bundling the runtime and the core file into one
1725 executable binary. This feature is not currently supported on all SBCL
1726 platforms. (thanks to James Bielman and NIIMI Satoshi)
1727 * new feature: a generational or ephemeral garbage collector is now
1728 the default on the PowerPC platform (both Linux and Darwin). The
1729 old Cheney (stop and copy) collector is a build-time option.
1730 (thanks to Cyrus Harmon, after Raymond Toy)
1731 * minor incompatible change: the method by which SBCL finds its
1732 contributed modules has changed; it no longer relies on symbolic
1733 links from an $SBCL_HOME/systems directory, but searches directly
1734 in the subdirectories of $SBCL_HOME.
1735 * enhancement: the dynamic heap size on the Linux/PPC platform is
1736 markedly larger, even using the older Cheney garbage collector.
1737 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1738 certain complicated string types. (reported by Gary King)
1739 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1740 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1741 * fixed bug: DOCUMENTATION on structures no longer signals an
1742 error if no structure type of the right name exists. (reported by
1744 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1745 applicable non-standard primary or :AROUND method on
1746 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1747 no longer cause unbound variable errors. (reported by Kevin Reid)
1748 * fixed bug: metacircle resolution in cases where methods have slots
1749 added before the slots from STANDARD-METHOD. (reported by Jean
1751 * fixed bug: the Power PC assembly code for calling into lisp
1752 sometimes computed its return address wrongly (depending on the
1753 15th bit of the address, fixed at link time). This used to
1754 manifest itself in a segmentation violation while building PCL.
1755 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1756 many others over the years)
1757 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1758 the stack pointer (treated as a signed integer) is negative.
1759 (thanks to Peter van Eynde)
1761 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1762 * new platform: experimental support for the Windows operating
1763 system has been added. (thanks to Alastair Bridgewater)
1764 * fixed several bugs in and robustified the PPC FFI (including
1765 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1766 * bug fix: allow non-simple string symbol names (reported by Paul
1768 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1770 * bug fix: saving a core corrupted callbacks on x86/x86-64
1771 * bug fix: closed a loophole in metacircularity detection and
1772 grounding in the PCL implementation of CLOS.
1773 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1774 (reported by tomppa on #lisp)
1775 * bug fix: clear the direction flag on Lisp -> C transitions, as
1776 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1777 (reported by Andrej Grozin and Hendrik Maryns)
1778 * optimization: major improvements to GC efficiency on GENCGC platforms
1779 * optimization: faster implementation of EQUAL
1780 * optimization: emit more efficient opcodes for some common
1781 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1782 * optimization: several other minor code-generation improvements on x86-64
1783 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1785 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1786 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1787 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1788 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1789 by ANSI as a generic function, and for consistency (SETF
1790 GENERIC-FUNCTION-NAME) is treated likewise.
1791 * fixed bug #233.b: make constraint propagation notice when a variable
1792 value is changed after it is referenced but before it is used
1793 * fixed bug #296: no more arbitrary behaviour from filenames with
1794 odd characters as --load arguments. (reported by Adam Warner)
1795 * fixed bug #390: :CHARACTER-SET pathname components now work as
1796 expected. (reported by Tim Daly Jr)
1797 * fixed bug #391: complicated :TYPE intersections in slot
1798 definitions no longer cause an error in PCL internals.
1799 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1800 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1801 returning the number of octets which would be written to the
1802 file-stream. (thanks to Robert J. Macomber)
1803 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1804 arguments to the internal stream functions. (thanks to David
1806 * bug fix: stack exhaustion is now handled on the x86/SunOS
1807 platform. (thanks to Daisuke Homma)
1808 * bug fix: more accurate ROOM results on GENCGC platforms
1809 * optimization: improved type inference for arithmetic-for
1810 index variables in LOOP
1811 * optimization: faster floating-point SQRT on x86-64
1812 * fixed some bugs revealed by Paul Dietz' test suite:
1813 ** DOCUMENTATION returns NIL instead of "" for method combinations
1814 that don't have a docstring
1816 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1817 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1818 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1819 therefore are not customizeable by user code (as seems to be at
1820 least permitted and maybe required by AMOP). As a consolation,
1821 however, the SBCL implementation of these functions now calls
1822 REINITIALIZE-INSTANCE as specified by AMOP.
1823 * bug fix: slot-definition documentation is propagated as per ANSI
1824 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1825 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1826 argument, as do eslotd initialization methods. (from Pascal
1827 Costanza's "Closer" project)
1828 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1829 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1831 * bug fix: it is now possible to have more than one subclass of
1832 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1833 (reported by Bruno Haible, Pascal Costanza and others)
1834 * bug fix: the dependent update protocol now works for generic
1835 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1836 and Pascal Costanza)
1837 * bug fix: condition-class instances corresponding to
1838 DEFINE-CONDITION forms are now created eagerly. (reported by
1839 Kalle Olavi Niemitalo on comp.lang.lisp)
1840 * bug fix: floating point printing is more accurate in some
1841 circumstances. (thanks to Simon Alexander)
1842 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1843 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1844 * bug fix: callbacks on OS X now preserve stack-alignment.
1845 (thanks to Cyrus Harmon)
1846 * enhancement: the x86-64 disassembler is much better at
1847 disassembling SSE instructions. (thanks to Lutz Euler)
1848 * enhancement: CHECK-TYPE on a variable now allows type-inference
1849 (thanks to Vincent Arkesteijn)
1850 * optimization: improved performance of EUC-JP external format.
1851 (thanks to NIIMI Satoshi)
1852 * optimization: performance improvements to IO on file streams of
1853 :ELEMENT-TYPE CHARACTER
1854 * optimization: much faster memory allocation on x86-64
1855 * optimization: faster garbage collections (latency and throughput)
1857 * optimization: faster bignum subtraction and division on x86 and x86-64
1858 (thanks to Lutz Euler)
1859 * optimization: more accurate type-inference for loops that use a
1860 floating point index variable or a negative step.
1862 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1863 * bug fix: add a workaround to SBCL looping infinitely at startup on
1864 Linux kernels with apparently buggy implementations of personality().
1865 (thanks to Svein Ove Aas)
1866 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1867 (thanks to David Lichteblau)
1868 * bug fix: local bindings shadow global symbol macros for
1869 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1870 * optimization: non-open coded uses of numeric comparison operators
1871 (e.g. >) no longer cons when called with more than one parameter
1872 on platforms supporting dynamic-extent allocation.
1873 * enhancement: saving cores with foreign code loaded is now supported
1874 on MIPS/Linux in addition to the previously supported platforms.
1875 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1876 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1877 * bug fix: division by zero in sb-sprof when no samples were collected
1878 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1879 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1880 (thanks to Alexander Kjeldaas)
1881 * new feature: ignoring the return values of destructive functions
1882 like NREVERSE signals a compile-time style-warning.
1883 (thanks to Kevin Reid)
1884 * new feature: the alignment of alien structure fields can be
1885 explicitly specified. (thanks to Cyrus Harmon)
1886 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1887 and dump core on SIGQUIT
1889 ** incompatible change: threads do not inherit values of specials
1890 from their parents (see manual)
1891 ** bug fix: threads stacks belonging to dead threads are freed by the
1892 next exiting thread, no need to gc to collect thread stacks anymore
1893 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1894 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1895 ** bug fix: dynamic variable and thread start related gc lossage
1896 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1898 * fixed some bugs revealed by Paul Dietz' test suite:
1899 ** SUBTYPEP is slightly more accurate on heinously complicated
1900 CONS types where some of the members have uncertain (in the
1901 NIL, NIL sense) type relationships to each other.
1903 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1904 no longer purified unless :PURIFY T is explicitly specified.
1905 ** Non-purified cores are significantly smaller than before
1907 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1908 * new feature: timers based on Zach Beane's excellent timer package
1909 * added support for the following external formats: koi8-u,
1910 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1911 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1912 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1913 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1914 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1915 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1916 * incompatible change: a threaded SBCL will no longer revert to
1917 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1918 * bug fix: interrupts are disabled until startup is complete; no
1919 more sigsegvs when receiving a signal to soon
1920 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1922 * bug fix: add a workaround for the memory randomization features in
1923 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1924 workaround will only be in effect on systems with the proc filesystem
1926 * bug fix: printing objects of type HASH-TABLE signals a
1927 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1929 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1930 have been running for over 50 days. (reported by Gilbert Baumann)
1931 * bug fix: the logic for getting names of functions gets less
1932 confused when confronded with alternate-metaclass
1933 funcallable-instances. (reported by Cyrus Harmon)
1934 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1935 consistent, even on internal alternate-metaclass objects.
1936 * bug fix: flush closure information collected by physical
1937 environment analysis prepass before the main pass. (bug reported
1939 * bug fix: compiler pack phase does not modify a hashtable, which is
1940 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1941 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1942 may be expanded. (reported by Alexander <malishev> on c.l.l)
1943 * bug fix: no more style-warnings when compiling code using LAST
1944 under high-SPEED low-SPACE settings. (reported by David Wallin
1946 * fixed some incompatibilities between SBCL's MOP and the MOP
1948 ** the METAOBJECT class is now implemented;
1949 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1950 STANDARD-OBJECT, as required;
1951 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1952 now compatible (as required by VALIDATE-SUPERCLASS); there
1953 remains a consistency requirement over the presence or absence
1954 of the FUNCTION class in the superclass list of finalized
1955 classes; see the manual for more details;
1956 ** the :AROUND method for COMPUTE-SLOTS on
1957 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1958 requested slot ordering.
1960 ** bug fix: parent thread now can be gc'ed even with a live
1962 ** bug fix: binding a special with PROGV to no value is not
1963 the same as that symbol not having been bound (thanks to
1965 ** bug fix: binding specials is thread safe (thanks to
1967 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1968 and SB-SPROF do not die with 'no handler for signal XX in
1969 interrupt_handle_now(..)' anymore
1970 ** bug fix: WITH-TIMEOUT works with multiple running threads
1971 * fixed some bugs revealed by Paul Dietz' test suite:
1972 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1973 the :method-class keyword argument.
1975 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1976 * new port: the Solaris operating system on x86 processors is now
1977 mostly supported, though some rough edges in the environment
1978 remain. (thanks to Daisuke Homma)
1979 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1980 space for its heap. (thanks to Thiemo Seufer)
1981 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1982 closures. (thanks to Thiemo Seufer)
1983 * minor incompatible change: eof selects abort in the debugger.
1984 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1985 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1987 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1988 deprecated, and will go away in a future revision of SBCL.
1989 * minor incompatible change: GC-ON and GC-OFF are no longer
1990 implemented with a counter, it does not matter how many times gc
1991 is switched on or off
1992 * bug fix: discriminating functions for generic function classes
1993 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1994 make invalid assumptions about method precedence order. (reported
1996 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1997 platforms. (thanks to Thiemo Seufer)
1998 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1999 * bug fix: correct pathname printing with printer escaping is on.
2000 (thanks to Kevin Reid)
2001 * bug fix: complex VOP definitions in "user-space" no longer trigger
2002 package locks. (reported by Zach Beane)
2003 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2004 for funcallable-instance functions, and is no different from
2006 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2007 characters in the current readtable. (reported by Nicholas Neuss)
2008 * bug fix: SUBTYPEP on various CONS types returns more a more
2009 accurate acknowledgment of its certainty.
2010 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2011 lists in some cases. This partially fixes bug 384.
2012 * flush all standard streams before prompting in the REPL and the
2014 * bug fix: signal handling and triggering gc do not conflict
2015 directly anymore, in particular a high frequency sb-sprof does
2016 not prevent gc from running
2017 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2018 approximation for timezone and DST information between the
2019 universal time epoch and the smallest negative 32-bit time_t.
2020 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2021 year 1899 so long as the encoded time is non-negative.
2022 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2023 the correct answer for non-constant rotate amounts when performing
2024 an inline 32-bit rotation.
2026 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2027 there is only one thread in the session
2028 ** bug fix: memory leak for streams created in one thread and
2029 written to in another
2030 ** bug fix: lockup when compiled with gcc4
2031 ** bug fix: race that allows the gc to be triggered when gc is
2033 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2034 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2036 ** bug fix: finished threads are gc'ed properly
2037 * fixed some bugs revealed by Paul Dietz' test suite:
2038 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2039 has arguments with a different set of applicable methods from
2040 the orignal arguments.
2041 ** The type error thrown by MAP now has a correct expected-type
2043 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2044 name a compiled function.
2045 ** Three MISC tests where a large bignum was improperly coerced to
2046 a float that couldn't represent that bignum during type
2047 derivation were fixed.
2048 ** SUBTYPEP can now handle types involving the negation of a
2049 list-form FUNCTION type.
2050 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2051 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2052 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2054 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2055 * New feature: Experimental support for bivalent streams: streams
2056 opened with :element-type :default now allow character and binary
2057 (unsigned-byte 8) I/O
2058 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2059 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2061 * bug fix: no more highly sporadic "couldn't check whether ~S is
2062 readable" when reading a stream and an interrupt hits in the middle
2063 of a select system call
2064 * compiler better recognizes complex arrays (reported by Eduardo
2066 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2067 for variables on SBCL built with linkage-tables. (reported by Luis
2069 * various error reporting improvements.
2070 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2071 (Thanks to Thiemo Seufer)
2072 * bug fix: nested reader invokations work correctly
2073 * bug fix: it is possible to have simultaneous references to foreign
2074 code and foreign data with the same name.
2076 ** added x86-64 support
2077 ** incompatible change: the threading api now works with thread
2078 objects instead of thread ids
2079 ** bug fix: threads are protected from signals and interruption when
2080 starting up or going down
2081 ** bug fix: a race where an exiting thread could lose its stack to gc
2082 ** bug fix: don't halt on infinite error in threads if possible
2083 ** fixed numerous gc deadlocks introduced in the pthread merge
2084 ** bug fix: fixed thread safety issues in read and print
2085 ** bug fix: debugger doesn't hang on session lock if interrupted at
2086 an inappropriate moment
2087 ** bug fix: run-program is now thread safe(r)
2088 ** bug fix: inner with-recursive-lock no longer releases the mutex
2089 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2090 * fixed some bugs revealed by Paul Dietz' test suite:
2091 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2092 EXPECTED-TYPE slots filled.
2093 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2095 ** MAKE-CONDITION accepts classes as type-designators.
2096 ** COMPILE may never return NIL.
2097 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2098 range before calling Unix time functions
2100 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2101 * numerous signal handling fixes to increase stability
2102 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2103 * minor incompatible change: we now correctly canonize default
2104 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2105 as per the MOP, rather than the historical (INITARG INITFUNCTION
2106 INITFORM). (reported by Bruno Haible)
2107 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2108 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2109 for more information.
2110 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2111 pathname is a directory pathname.
2112 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2113 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2115 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2116 :METACLASS argument in addition to a class name. (reported by
2117 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2118 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2119 (reported by Bruno Haible; patch from Gerd Moellmann)
2120 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2122 * bug fix: more cleanups to the floating point exception handling on
2123 x86-64 (thanks to James Knight)
2124 * bug fix: the compiler does not try to constant fold calls of
2125 COERCE and BIT-* functions when they return freshly constructed
2126 objects. (reported by Nikodemus Siivola and Paul Dietz)
2127 * optimization: improved the MIPS versions of generic (in the
2128 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2129 * optimization: direct conversion of (unsigned-byte 32) to floats on
2130 the PowerPC platform.
2131 * optimization: structure instances with raw slots now use less
2132 memory, and probably show better memory locality. (thanks to
2134 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2135 are treated as requests for stack allocation on the x86-64,
2136 Alpha-32, PPC and SPARC platforms.
2137 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2138 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2139 (thanks to Tony Martinez)
2141 ** gcing a dead thread can no longer lead to lockups
2142 ** threads block signals until they are set up properly
2143 ** errno is no longer shared by threads
2144 ** interrupt-thread restores the eflags register on x86
2145 ** fixed some lockups due to gc/thread interaction
2146 * fixed some bugs revealed by Paul Dietz' test suite:
2147 ** invalid dotted lists no longer raise a read error when
2148 *READ-SUPPRESS* is T
2149 ** signal an error if a symbol that names a declaration is used
2150 as the name of a type, or vice versa
2151 ** allow using the (declare (typespec var*)) abbreviation for
2152 (declare (type typespec var*)) with all type specifiers
2153 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2154 ** always return NIL from PPRINT-POP when OBJECT is NIL
2155 ** don't signal errors when pretty-printing malformed LABELS,
2156 FLET or MACROLET forms
2157 ** declarations in a DOLIST body are also in scope for the
2159 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2161 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2164 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2165 * fixed cross-compiler leakages that prevented building a 32-bit
2166 target with a 64-bit host compiler.
2167 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2168 opened with :IF-EXISTS :OVERWRITE.
2169 * fixed bug 281: error for an invalid qualifier in a short-form method
2170 combination method is not signalled until the faulty method is called.
2171 * bug fix: iteration variable type inferrer failed to deal with open
2172 intervals. (reported by Alan Shields)
2173 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2174 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2175 or more runtime options were provided to the sbcl binary.
2176 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2177 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2178 * optimization: there's now a fast-path for fixnum arguments in the
2179 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2180 * optimization: the code generated on x86-64 is more compact thanks
2181 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2182 * bug fix: floating-point exception handling now partly works on
2183 x86-64. (Thanks to James Knight)
2184 * improvement to the MIPS backend from Thiemo Seufer: C-style
2185 64-bit long long arguments and return values to alien functions
2187 * fixed some bugs revealed by Paul Dietz' test suite:
2188 ** the type-error signalled from WARN has a filled-in DATUM slot.
2189 ** the type-error required when a stream is not associated with
2190 a file has the stream as its datum.
2191 ** type-errors on single-floats on x86-64 no longer have
2192 :INVALID-OBJECT as the datum
2193 ** the type-errors signalled for invalid function names now have
2194 a correct expected type
2195 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2196 for structures defined with a :TYPE. Documentation strings for
2197 typed structures are no longer immediately discarded
2198 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2199 broadcast streams and synonym streams. FILE-LENGTH now also works
2200 on broadcast streams.
2202 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2203 * incompatible change: the --noprogrammer option, deprecated since
2204 version 0.7.5, has been removed. Please use the equivalent
2205 --disable-debugger option instead.
2206 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2208 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2209 inoperational for a while now) has been completely removed.
2210 * null lexical environments are now printed as #<NULL-LEXENV>,
2211 significantly reducing the amount of clutter in typical backtraces.
2212 * documentation on weak pointers, finalization, and after GC hooks
2213 has been added to the manual.
2214 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2215 as other specialized array types, is much faster. SUBSEQ and
2216 COPY-SEQ on such arrays have also been sped up.
2217 * optimization: EQL is now more efficient when at least other argument
2218 is known to be of type (OR FIXNUM (NOT NUMBER)).
2219 * fixed bug: the runtime is now less vulnerable to changes in the
2220 size of the SBCL object on OS X, and virtual memory is reserved for
2221 all spaces that need to be at a fixed address.
2222 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2223 * fixed bug: finalizers and after GC hooks that cause consing are now
2225 * fixed bug: compiler error messages and summaries are now printed to
2226 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2227 * fixed inference of the upper bound of an iteration variable.
2228 (reported by Rajat Datta).
2229 * fixed bug 211e: calling local functions with duplicated constant
2230 keyword argument no longer causes a bogus style warning about an
2232 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2233 ftype declaration to be disregarded. (reported by Dave Roberts)
2234 * fixed bug 373: caused by erronous compilation of references to alien
2235 variables in the runtime on ppc/darwin.
2236 * fixed bug 376: CONJUGATE type deriver.
2237 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2238 (reported by Baughn on #lisp)
2239 * a cross-compiler bug on non-x86 platforms has been identified and
2240 fixed. (thanks to Bruno Haible)
2241 * improvements to the MIPS runtime code for increased stability.
2242 (thanks to Thiemo Seufer)
2243 * increased the maximimum compact environment size to allow
2244 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2245 * partial workaround for bug 135: don't name the function we're
2246 calling for hairy cases of EVAL, so as not to accumulate one environment
2247 entry per call to EVAL. (reported by Kevin Reid)
2248 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2249 * optimization: type testing for non-vector arrays should be faster.
2250 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2252 * bug fix: setting 31st element of a bit vector to zero did not work
2254 * bug fix: redefining a class definition which failed due to a
2255 previous accessor / function clash now works (but see BUGS entry
2256 #380 for more problems in this area). (thanks to Zach Beane)
2257 * the long form of DEFINE-METHOD-COMBINATION disables method group
2258 checking when given a single method group with pattern *. (thanks
2260 * on x86 compiler supports stack allocation of results of simple
2261 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2262 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2263 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2264 * fixed some bugs related to Unicode integration:
2265 ** the restarts for recovering from input and output encoding
2266 errors only appear when there is in fact such an error to
2268 * fixed some bugs revealed by Paul Dietz' test suite:
2269 ** MISC.549 and similar: late transformation of unsafe type
2270 assertions into derived types caused unexpected code
2272 ** SCALE-FLOAT type deriver is less wrong.
2273 ** type derivers for EXP, LOG and similar functions compute result
2274 types for complex arguments better.
2275 ** (MISC.563) CONJUGATE type deriver works for very restricted
2277 ** out-of-line type testers for character strings are available.
2278 ** EQUAL compiler transform understands specialness of objects
2280 ** accessing double-floats stored on the stack now works on x86-64.
2281 ** debugger internals could sometimes create invalid lispobjs,
2282 resulting in GC crashes.
2283 ** MISC.548: type check weakening can convert required type into
2285 ** initialization forms for bindings are not in scope of free special
2288 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2289 * incompatible change: thread support for non-NPTL systems has
2290 been removed - locking is buggy and unreliable. A threaded
2291 SBCL build will now warn at startup and refuse to create
2292 new threads, unless futex support is detected in the kernel
2293 * incompatible change: the top level REPL now has only an ABORT
2294 restart associated with it, not TOPLEVEL and ABORT as it used to.
2295 TOP and TOPLEVEL are now available as debugger commands for
2296 returning to the top level.
2297 * incompatible change: forms evaluated in the REPL now use the
2298 global optimization policy.
2299 * incompatible change: user- and system-initialization files are
2300 no longer processed with LOAD, but by READ and EVAL; hence the
2301 global optimization policy, startup package, readtable, etc,
2303 * The .fasl file format number has been incremented because of
2304 various incompatible changes.
2305 * internal entry point details and argument counts no longer appear
2306 in backtraces unless explicitly requested by setting
2307 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2308 * built-in and standard functions no longer have names like "top
2309 level local call to FOO".
2310 * fixed bug 32: functions defined in non-null lexical environments
2311 now have more legible printed representation
2312 * fixed bug 33: functions defined in non-null lexical environemnts
2313 are now more amenable to inspection by INSPECT.
2314 * workaround for bug 354: XEPs no longer appear in backtraces unless
2315 explicitly requested.
2316 * fixed bug: receiving the signal which results from attempting to
2317 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2318 SIGBUS on other *BSDs) on architectures where the C stack is also
2319 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2320 to debugger confusion or wild instability. (reported by Cheuksan
2322 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2323 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2324 (reported by Lutz Euler)
2325 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2326 compiled code. (reported by Paul Dietz)
2327 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2328 specialized parameter to a method to something that is not TYPEP
2329 the specializer is now possible.
2330 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2331 face of package deletion.
2332 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2333 pathname. (reported by David Tolpin on c.l.l)
2334 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2335 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2336 STRING-STREAM and FILE-STREAM, respectively.
2337 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2338 than previously; in addition, its test suite is now run on build.
2339 (thanks to Luke Gorrie)
2340 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2341 * optimization: added a immediate representation for single-floats
2343 * fixed some bugs revealed by Paul Dietz' test suite:
2344 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2345 ** attempting to create a package with a colliding nickname causes
2346 correctable errors to be signalled.
2347 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2348 ** several x86-64 backend bugs related to sign-extension of immediate
2351 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2352 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2353 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2355 * fixed loading of multiply forward-referenced layouts.
2356 (thanks to Cheuksan Wang)
2357 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2358 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2359 (see COMPILE-FILE documentation for details of :PRINT option)
2360 * fixed bugs 19 and 317: fixed-format floating point printing is
2361 more accurate. This also fixes a bug reported by Adam Warner
2362 related to the ~@F format directive.
2363 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2365 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2366 dispatch table if the from-char is a dispatch macro character.
2367 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2368 by the wordsize no longer ignore the last word. (reported by Lutz
2370 * fixed bug in type checking of dynamic-extent variables. (reported
2372 * optimization: sequence traversal functions use their freedom to
2373 coerce function designators to functions.
2374 * optimization: code with many calls to CLOS methods specialized on
2375 CLOS classes has had redundant type checks removed.
2376 * optimization: added declarations to speed up operations that access
2377 the internal character database (for example STRING-UPCASE)
2378 * optimization: comparison operations between floats and sufficiently small
2379 fixnums no longer create extra rationals
2380 * fixed some bugs related to Unicode integration:
2381 ** portions of multibyte characters at the end of buffers for
2382 character-based file input are correctly transferred to the
2383 start of the buffer at the next read.
2384 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2385 passing it through to OPEN.
2386 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2387 argument given to internal calls to OPEN.
2388 ** the built-in comment readers (introduced by character sequences
2389 ";" and "#|") are more forgiving to encoding errors; they will
2390 STYLE-WARN and then attempt to resync the stream at a character
2391 boundary. (thanks to Teemu Kalvas)
2392 * fixed some bugs in the x86-64 port:
2393 ** Negative short int return values from c-calls are sign-extended
2395 ** The stack is aligned to 16-bytes for c-calls, as required by
2396 the ABI. (thanks to Cheuksan Wang)
2397 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2398 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2399 for enums. (thanks to Vincent Arkesteijn)
2400 ** Multiple small optimizations and bugfixes for floating point
2402 * fixed some bugs revealed by Paul Dietz' test suite:
2403 ** Space, Tab, Linefeed, Return and Page have the invalid
2404 secondary constituent character trait.
2405 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2407 ** WITH-INPUT-FROM-STRING should only update the index place on
2409 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2410 works more reliably.
2411 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2412 with one-dimensional arrays with fill pointers.
2413 ** TYPE-OF failed on a complex with an integer realpart and a
2415 ** compiler failure during type inference for the code of form
2416 (IF (EQL X (THE ...)) ...) (MISC.535).
2418 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2419 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2420 platform. The port supports 61-bit fixnums, large memory spaces
2421 and reloading shared object files.
2422 * enhancement: saving cores with foreign code loaded is now
2423 supported on ppc/Darwin in addition to the previously supported
2425 * enhancement: the statistical profiler now walks deeper into the
2426 call stack for more meaningful call-graphs and accrued time
2427 reports (x86/x86-64 only). It also now reports time spent in
2429 * enhancement: it is now possible to trace most individual methods
2430 of a generic function in addition to tracing the generic function
2432 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2434 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2435 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2436 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2437 produces an error. (thanks to Vincent Arkesteijn)
2438 * bug fix: NAMESTRING on pathnames with :WILD components in their
2439 directories works correctly. (thanks to Artem V. Andreev)
2440 * fixed bug 125: compiler preserves identity of closures. (reported
2442 * bug fixed: functions with &REST arguments sometimes failed with
2443 "Undefined function" when compiled with (DEBUG 3). (reported by
2445 * bug fix: overflow during compiling of setting element of a bit
2446 vector with constant index and value. (reported by Timmy Douglas)
2447 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2448 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2449 * on x86 compiler partially supports stack allocation of dynamic-extent
2451 * GO and RETURN-FROM do not check the extent of their exit points
2452 when compiled with SAFETY 0.
2453 * fixed some bugs related to Unicode integration:
2454 ** encoding and decoding errors are now much more robustly
2455 handled; it should now be possible to recover even from invalid
2456 input or output to the terminal. (thanks to Teemu Kalvas)
2457 ** provided a first cut at implementing STRING-TO-OCTETS and
2458 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2459 ** altered the SB-MD5 contributed module slightly, changing the
2460 interface just enough for it to be supportable for builds where
2461 lisp characters are not eight bits.
2462 * fixed some bugs revealed by Paul Dietz' test suite:
2463 ** the FORMATTER-generated functions for ~V[ conditionals require
2464 the correct number of arguments.
2465 ** READ-FROM-STRING returns the mandated second value when applied
2466 to displaced strings.
2467 ** the #\Rubout and #\Backspace characters are treated as invalid
2468 constituent characters by the tokenizer.
2470 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2471 * new feature: reloading changed shared object files with
2472 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2473 * new feature: references to foreign variables and functions
2474 can now be compiled and loaded before the corresponding shared
2475 object file is loaded, as long as the foreign definitions are
2476 available at runtime.
2477 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2478 supported. (thanks to Dan Debertin)
2479 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2480 just keywords. (thanks to Vincent Arkesteijn)
2481 * fixed bug #331: structure-class instances corresponding to
2482 DEFSTRUCT forms are now created eagerly.
2483 * fixed bug #345: backtraces from calls to undefined functions work
2484 on x86 as well. Related bug #61 is now also partially fixed on x86
2485 (backtraces from throws to unknown catch tags.)
2486 * bug fix: lambda-list parsing is now stricter vrt. order and number
2487 of lambda-list keywords.
2488 * bug fix: as specified by AMOP, an error is signalled if a
2489 class-option appears multiple times in a DEFCLASS form. (reported
2491 * bug fix: RANDOM can be compiled when the compiler derives the type
2492 of its numeric argument as a disjoint set of small integers.
2493 (reported by Paul Dietz)
2494 * bug fix: starting a core saved with shared objects loaded when
2495 those objects are not available no longer causes threaded SBCL to
2496 hang. (reported by Sean Ross)
2497 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2499 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2500 argument, which must always be NIL. (reported by Kalle Niemitalo)
2501 * bug fix: printing 1.0d+23 no longer results in an error.
2502 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2503 * bug fix: structure slot setters preserve evaluation order. (thanks
2505 * fixed some bugs related to Unicode integration:
2506 ** RUN-PROGRAM can allow its child to take input from a Lisp
2507 stream. (reported by Stefan Scholl)
2508 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2509 locales. (reported by Ken Causey)
2510 * fixed some bugs revealed by Paul Dietz' test suite:
2511 ** INCF, DECF and REMF evaluate their place form as specified in
2513 ** FORMATTER expands ~{ ~} iteration directives with V or #
2514 parameters correctly.
2515 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2516 consequent uses no arguments correctly.
2517 ** the system has a partial understanding of the (COMPLEX RATIO)
2519 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2522 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2523 * new feature: a build-time option (controlled by the :SB-UNICODE
2524 keyword feature, enabled by default) for building the system with
2525 support for the entire 21-bit character space defined by the
2527 * new feature: the system now has rudimentary external-format
2528 support; the primary user-visible change at this time is that
2529 characters with the high bit set (such as lower-case-e-acute) will
2530 print correctly to a terminal in a UTF-8 environment.
2531 * minor incompatible change: BASE-CHAR no longer names a class;
2532 however, CHARACTER continues to do so, as required by ANSI.
2533 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2534 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2535 has been moved to the SB-EXT package (temporarily re-exported from
2537 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2538 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2540 * fixed bug #351: better error-handlind and reporting for malformed
2542 * fixed bug #350: bignum-printing is now more memory-efficient,
2543 allowing printing of very large bignums, eg. (expt 2 10000000).
2544 (reported by Bruno Haible)
2545 * fixed bug #302: better primitive-type selection for intersection
2547 * fixed bug #308: non-graphic characters now all have names, as
2548 required. (reported by Bruno Haible)
2549 * bug fix: redefining a class with different superclasses now correctly
2550 removes it from the direct-subclasses of its previous superclasses.
2551 (reported by David Morse)
2552 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2553 new value now works. (reported by Bruno Haible)
2554 * bug fix: correct canonicalization of multiple non-standard slot
2555 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2556 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2557 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2558 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2559 now exists, an signals an error.
2560 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2561 during macroexpansion for non-iteration variables as well. (reported
2562 by Bruno Haible for CMUCL)
2563 * bug fix: Cyclic structures and unprintable objects in compiler
2564 messages no longer cause errors. (reported by Bruno Haible)
2565 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2566 and READ-FROM-STRING all now return a primary value of NIL if
2567 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2568 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2569 (reported by Bruno Haible for CMUCL)
2570 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2571 do not designate a condition. (reported by Bruno Haible for
2573 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2574 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2575 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2576 permitting resolution in favour of any of the conflicting symbols.
2577 (reported by Bruno Haible for CMUCL)
2578 * bug fix: EQUAL compiler optimizations is less aggressive on
2579 strings which can potentially compare true despite having distinct
2580 specialized array element types.
2581 * bug fix: unit enumerations can be defined without dividing by
2582 zero. (thanks to Vincent Arkesteijn)
2583 * FORMAT compile-time argument count checking has been enhanced.
2584 (report from Bruno Haible for CMUCL)
2585 * a partial workaround for the bug 262: the compiler does not try to
2586 inline-expand a local function doing RETURN-FROM from a deleted
2587 BLOCK. (thanks to Peter Denno for the bug report and to David
2588 Wragg for the simple test case)
2589 * fixed some bugs revealed by Paul Dietz' test suite:
2590 ** RENAME-PACKAGE allows all package designators as new package
2592 ** constraint propagation and lambda variable substitution are
2593 more cautious in dealing with partially deleted code.
2594 ** compiler sometimes lost reoptimization passes.
2595 ** CERROR, given a condition as condition designator, passes its
2596 remaining arguments to the continue format control without
2598 ** Case-altering FORMAT directives work correctly on non-ASCII
2600 ** The REAL type specifier handles bounds outside the floating
2601 point ranges without signalling FLOATING-POINT-OVERFLOW.
2602 ** Functions with IR1-transformations can create intercomponent
2603 references to global functions.
2604 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2606 ** FORMAT ~R treats a nil value for its first parameter correctly.
2608 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2609 * enhancement: saving cores with foreign code loaded is now
2610 supported on x86/NetBSD and sparc/Linux in addition to the previously
2611 supported platforms.
2612 * bug fix: on some platforms repeated installations caused multiple
2613 copies of HTML documentation to be installed -- should not happen
2614 any more. (reported by Stefan Scholl)
2615 * bug fix: parsing self-recursive alien record types multiple times
2616 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2617 original patch by Helmut Eller for CMUCL)
2618 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2619 (thanks to Richard Kreuter)
2620 * bug fix: defining classes whose accessors are methods on existing
2621 generic functions in other (locked) packages no longer signals
2622 bogus package lock violations. (reported by François-René Rideau)
2623 * bug fix: special variables as DEFMETHOD parameters no longer have
2624 associated bogus type declarations. (reported by David Wragg and
2626 * bug fix: read-write consistency on streams of element-type
2627 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2628 * bug fix: redefiniton of the only method of a generic function with
2629 no DEFGENERIC no longer emits a full WARNING. In addition,
2630 redefinition of generic functions with no DEFGENERIC to an
2631 incompatible lambda list now signals an error. (thanks to Zach
2633 * bug fix: DEFGENERIC now works even when there's a function of the
2634 same name in an enclosing lexical environment. (thanks to Zach
2636 * fixed compiler failure, caused by instrumenting code during
2637 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2638 * optimization: added loop analysis and improved register allocation
2639 * fixed some bugs revealed by Paul Dietz' test suite:
2640 ** POSITION on displaced vectors with non-zero displacement
2641 returns the right answer.
2642 ** (SIMPLE-STRING) is a valid type specifier for sequence
2644 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2646 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2647 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2649 ** The justification version of the FORMAT ~< directive treats
2650 non-zero minpad parameter correctly.
2652 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2653 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2654 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2655 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2656 the supported interface.
2657 * new feature: Single-stepping of code compiled with DEBUG 2 or
2658 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2659 * new feature: saving cores with foreign code loaded is now
2660 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2661 Timothy Moore's work for CMUCL)
2662 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2663 parameters to * instead of NIL if no initform is supplied.
2664 (reported by Johan Bockgaard)
2665 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2666 correctly when FUNCALL appears as the car of the form. Note:
2667 despite this FUNCALL forms are not currently subject to
2668 compiler-macro expansion. (port of Raymond Toy's fix for the
2669 same from CMUCL, reported by Johan Bockgaard)
2670 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2671 (thanks for Teemu Kalvas)
2672 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2673 case instead of terminating the iteration (thanks for Julian
2674 Squires, Sean Champ and Raymond Toy)
2675 * bug fix: incorrect expansion of defgeneric that caused a style
2676 warning. (thanks for Zach Beane)
2677 * bug fix: slot accessor effective method computation works properly
2678 for classes with multiple non-standard applicable methods on
2679 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2680 * on x86 compiler supports stack allocation of results of LIST and
2681 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2682 CMUCL implementation by Gerd Moellmann)
2683 * fixed some bugs revealed by Paul Dietz' test suite:
2684 ** FORMAT strings with both the ~<~:;~> form of the justification
2685 directive and pretty-printing directives cause an error.
2687 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2688 * incompatible change: the internal functions
2689 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2690 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2691 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2692 instead of the old functions.
2693 * new feature: on platforms where "dladdr" is available foreign
2694 function names now appear in backtraces. (based on Helmut Eller's
2696 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2697 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2699 * documentation: ASDF manual is now distributed with SBCL.
2700 * bug fix: SBCL can now load its contributed modules with REQUIRE
2701 even if the system-provided entries have been removed from
2702 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2704 * bug fix: backtraces involving undefined functions or assembly
2705 routines are more informative. (thanks to Brian Downing)
2706 * bug fix: mutually referent alien structures now work correctly.
2707 (reported by Rick Taube)
2708 * bug fix: structures defined by WITH-ALIEN can be referred to
2709 within other definitions in the same WITH-ALIEN.
2710 * bug fix: division operators (MOD, TRUNCATE and the like) with
2711 constant zero divisors and integer dividends no longer generate
2713 * bug fix: provide default methods for INPUT-STREAM-P and
2714 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2715 * bug fix: improve the detection and resolution of MOP metacycles
2716 (where effective method computation depends on the generic function
2717 having its effective method computed). (reported by Bruno Haible)
2718 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2719 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2720 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2721 * bug fix: pathnames with relative directory components can be
2722 represented relative to default pathnames.
2723 * optimization: in taking the GCD of bignums, reduce the two bignums
2724 to approximately the same size (using Euclid's algorithm) before
2725 applying the more sophisticated binary GCD. (thanks to Juho
2727 * optimization: COUNT on bitvectors now operates word-at-a-time.
2728 * optimization: ASH with a positive, but not necessarily constant,
2729 (leftwards) shift, when in a modular context, is compiled to a
2731 * fixed some bugs revealed by Paul Dietz' test suite:
2732 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2733 if the corresponding argument is NIL.
2734 ** FORMAT directives accepting a minpad parameter treat negative
2736 ** literal commas as character parameters to FORMAT directives are
2738 ** literal spaces directly after ~<Newline> directives within a
2739 format-logical-block (~:< ~@:>) do not induce :FILL-style
2740 conditional newlines.
2741 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2742 as specified: it no longer includes conditional newlines).
2743 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2745 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2746 :PER-LINE-PREFIX argument does not evaluate to a string.
2748 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2749 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2750 the manual for details; for now, package locks can be disabled by
2751 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2752 if no major problems are found then it is likely that they will be
2753 compiled in unconditionally.
2754 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2755 unsupported operators on all platforms. To load a shared library
2756 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2757 object file, link it into a shared library outside of SBCL and
2758 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2760 * bug workaround: ROOM T and the GC were not working together
2761 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2762 reporting facility aren't preserved. That reporting has been
2763 disabled, so now until and unless someone figures out how to make it
2764 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2765 * minor incompatible change: as threatened around sbcl-0.8.0, the
2766 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2767 The symbols are also exported from SB-PCL for backwards
2768 compatibility, but more so than before SB-PCL should be treated as
2769 an implementation-internal package.
2770 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2772 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2773 It is known as of this release not to work on the Alpha, however.
2774 * fixed bug #167: errors signalled due to illegal syntax in method
2775 bodies are now more legible.
2776 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2777 designators and can hence be used with TYPEP.
2778 * fixed bug #333: CHECK-TYPE now ensures that the type error
2779 signalled, if any, has the right object to be accessed by
2780 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2781 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2782 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2784 * fixed bug #334: programmatic addition of slots using specialized
2785 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2786 and :ALLOCATION :CLASS slots.
2787 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2788 float exponents. (rereported by Peter Seibel)
2789 * fixed a bug: #\Space (and other whitespace characters) are no
2790 longer considered to be macro characters in standard syntax by
2791 GET-MACRO-CHARACTER.
2792 * fixed bug: initialization of condition class metaobjects no longer
2793 causes an instance of the condition to be created. (reported by
2795 * fixed bug: it is now possible to have slots such that
2796 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2797 description is neither :INSTANCE nor :CLASS.
2798 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2799 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2800 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2801 non-standard SLOT-DEFINITION-ALLOCATION values.
2802 * fixed bugs: various race conditions handling exiting threads.
2803 CL-PPCRE's thread torture test now passes.
2804 * fixed arguably-a-bug: GC time proportional to number of threads in
2805 system even when most of them are idle
2806 * optimization: improved performance of BIT and SBIT on bit-vectors.
2807 * .fasl file incompatibility: The fasl file version number has
2808 been incremented because of changes associated with package locks.
2810 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2811 * minor incompatible change: the system no longer provides
2812 optimization hints (conditions which are TYPEP
2813 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2814 mode; these hints are still emitted when higher SPEED optimization
2816 * new contrib module: a sampling profiler (profiling by statistical
2817 sampling, rather than by instrumenting functions) is available as
2818 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2819 * the behaviour of the standard function ED is now customizeable by
2820 third parties through a hook variable: see ED's documentation
2821 string for information on the protocol.
2822 * the compiler no longer emits efficiency notes for (FUNCALL X)
2823 when the type of X is uncertain under default optimization
2825 * fixed bug 276: mutating a binding of a specialized parameter to a
2826 method to something that is not TYPEP the specializer is now
2828 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2829 exhibit the required behaviour on the x86 platform. (thanks to
2830 Peter van Eynde, Eric Marsden and Bruno Haible)
2831 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2832 even for difficult arguments. (reported by Peter Graves)
2833 * fixed bug 141a: the backquote printer now descends quoted
2835 * fixed another bug in backquote printing: no more destructive
2836 modification of the form's list structure. (reported by Brian
2838 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2839 move between its address being taken and the call to
2840 interrupt_thread, fixing a crashing race condition.
2841 * the SB-POSIX contrib implementation has been adjusted so that it
2842 no longer exhibits ridiculously poor performance when constructing
2843 instances corresponding to C structs.
2845 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2846 * minor incompatible change: the sb-grovel contrib now treats C
2847 structures as alien (in the sense of SB-ALIEN) objects rather than
2848 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2849 has implications for memory management of client code
2850 (sb-grovel-returned objects must now be manually managed) and for
2851 type safety (alien objects now have full types).
2852 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2853 used to control emission of compiler diagnostics, rather than the
2854 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2855 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2856 quality should be considered deprecated.
2857 * install.sh now installs the user manual as well
2858 * (not quite a new documentable feature, but worth considering in
2859 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2860 beginnings of a semantically meaningful condition hierarchy is
2861 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2863 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2864 designator as the defaults argument.
2865 * fixed bug: Displaced arrays whose displaced-to array has become
2866 too small now cause ARRAY-DIMENSION to signal an error, providing
2867 for safer bounds-checking. (reported by Bruno Haible)
2868 * fixed bug: DEFCLASS slot definitions with identical :READER and
2869 :WRITER names now signal a reasonable error. (reported by Thomas
2871 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2873 * fixed bug: Invalid slot specification errors now print correctly.
2874 (thanks to Zach Beane)
2875 * fixed bug 320: Shared to local slot value transfers in class
2876 redefinitions now happen corrently from superclasses as
2877 well. (reported by Bruno Haible)
2878 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2880 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2881 improper lists correctly. (reported by Bruno Haible)
2882 * fixed bug 313: source-transform for <fun-name> was erroneously
2883 applied to a call of a value of a variable with name <fun-name>.
2884 (reported by Antonio Menezes Leitao)
2885 * fixed bug 307: The obsolete instance protocol ensures that
2886 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2887 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2888 remove dead unknown-values globs from the middle of the stack.
2889 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2890 easier to resume long computations after using *BREAK-ON-SIGNALS*
2891 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2892 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2893 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2894 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2895 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2896 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2898 * fixed a (fairly theoretical) bug in string printing: if
2899 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2900 does not have array-element-type equal to the most general string
2902 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2903 function name. (thanks to Nikodemus Siivola)
2904 * fixed bug: compile-time format string checker failed on
2905 non-closed ~{. (reported by Thomas F Burdick)
2906 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2907 don't warn on legal loop code involving more than one aggregate
2908 boolean. (thanks to Nikodemus Siivola)
2909 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2910 in keyword position to MAKE-PACKAGE was not being reported as
2912 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2913 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2915 * fixed bugs 280 and 312: the checking for multiple definitions in a
2916 file is less likely to become confused by uses of inline
2918 * fixed bug: the #S reader macro performs the keyword coercion
2919 specified for slot names. (reported by Kalle Niemitalo)
2920 * fixed bug: lambda lists may contain symbols whose names start with
2921 & but are not lambda-list-keywords; their occurrence triggers a
2923 * fixed bug 321: define-method-combination argument lambda lists do
2924 not cause invalid code to be generated when &optional or &aux
2925 variables have default values. (reported by Bruno Haible)
2926 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2927 have CLOS classes; this appears also to have fixed reported
2928 instability in stack exhaustion detection.
2929 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2930 MUFFLE-WARNING when no associated restart is present is now
2932 * optimization: rearranged the expansion of various defining macros
2933 so that each expands into only one top-level form in a
2934 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2936 * optimization: used a previously little-used slot in symbols to
2937 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2939 * fixed some bugs revealed by Paul Dietz' test suite:
2940 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2942 ** Fixed an optimization bug related to inheritance of initforms
2943 from local to shared slots.
2944 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2945 ** CAST optimizer forgot to flush argument derived type.
2946 ** print/read consistency on floats is now orders of magnitude
2947 more likely. (thanks also to Bruno Haible for a similar report
2949 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2950 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2951 for objects of type REAL. Make it so.
2952 ** SXHASH is specified (infelicitously) to respect similarity,
2953 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2954 it so. (thanks to Markus Ziegler)
2955 ** on the Alpha, the compiler succeeds in compiling functions
2956 returning a known number of arguments greater than 63.
2957 ** fixed handling of invalid NIL arguments in keyword position
2959 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2961 ** provided a readably-printable representation for RANDOM-STATE
2963 ** ensured that pathnames, where they have a namestring, always
2964 print using #P"..." syntax.
2966 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2967 * Support for the forthcoming 2.0 version of the NetBSD kernel
2968 running on x86 hardware has been added. (thanks to Perry
2969 E. Metzger most immediately, and others for their past work)
2970 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2971 current release version; SBCL's OpenBSD support had been broken
2972 since about the time of OpenBSD's switch to ELF binary format.)
2973 * [placeholder for DX summary]
2974 ** user code with &REST lists declared dynamic-extent, under high
2975 speed or space and low safety and debug optimization policy.
2976 * The manual has been converted to Texinfo format and the debugger
2977 chapter from the cmucl manual has been added.
2978 * A facility has been added to extract documentation strings from
2979 sbcl and store them as Texinfo-formatted snippets for inclusion in
2980 the manual (via Texinfo's @include directive)
2981 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2982 the test case to Dave Roberts)
2983 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2984 pointers. (reported by Sean Ross)
2985 * bug fix: PROFILE output is printed nicely even for large numerical
2986 values. (thanks to Zach Beane)
2987 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2988 greater than 32 handle EOF correctly.
2989 * bug fix: on X86 an immediate argument of the IMUL instruction is
2990 correctly printed in disassembly. (thanks to Lutz Euler)
2991 * bug fix: class slots in redefined classes preserve their old
2992 values. (thanks to Bruno Haible and Nikodemus Siivola)
2993 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2994 succeeds. (reported by Marco Baringer)
2995 * fixed some bugs revealed by Paul Dietz' test suite:
2996 ** READ-SEQUENCE now works on ECHO-STREAMs.
2997 ** RATIONALIZE works more according to its specification. (thanks
3000 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3001 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3002 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3003 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3004 should matter to you only if you rebind the printer control
3005 variables and then find you want different bindings in the
3006 debugger than in the ordinary execution of your program.)
3007 * The runtime build system has been tweaked to support building
3008 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3009 assembler and linker. (thanks to Nikodemus Siivola)
3010 * Unbound, undefined, undeclared variables now trigger full
3011 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3012 more often programmer error than deliberate exploitation of undefined
3014 * optimization: the hash algorithm for strings has changed to one
3015 that is less vulnerable to spurious collisions. (thanks to Juho
3017 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3018 needless bounds checking. (thanks to Juho Snellman)
3019 * optimization: implemented multiplication as a modular
3020 (UNSIGNED-BYTE 32) operation on the PPC backend.
3021 * fixed some bugs revealed by Paul Dietz' test suite:
3022 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3024 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3025 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3026 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3028 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3030 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3032 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3033 their output stream on EOF from read.
3034 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3035 have been read to end-of-file.
3036 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3038 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3039 description of determination of which consecutive characters
3041 ** Printing the "Space" character with escaping on now yields "#\\ ",
3042 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3043 ** Reading floating-point numbers with *READ-BASE* set to a number
3044 less than 10 works correctly.
3045 ** Reading floating-point numbers with *READ-BASE* set to a number
3046 more than 10 works correctly.
3047 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3048 the readtable currently in effect.
3050 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3051 * minor incompatible change: parsing of namestrings on a physical
3052 (Unix) host has changed; numbers after the final #\. in a
3053 namestring are no longer interpreted as a version field. This is
3054 intented to be largely invisible to the user, except that the
3055 meaning of the namestring "*.*.*" has changed: it now refers to a
3056 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3057 should usually be replaced by
3058 (make-pathname :name :wild :type :wild :version :wild)
3059 with the added benefit that this is more likely to be portable.
3060 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3061 option to OPEN now signals an error if the file being opened
3062 exists; this may have an impact on existing code.
3063 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3064 signals received, on the PowerPC platforms (both Linux and
3065 Darwin). (thanks to Pierre Mai for pointing out the location of
3067 * several fixes on OS X: The system now builds and runs cleanly on
3068 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3069 (thanks to Brian Mastenbrook)
3070 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3071 second-resolution: integer multiples of 1/3600 between -24 and 24.
3072 (thanks to Vincent Arkesteijn)
3073 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3074 type when called with 1 argument; PEEK-CHAR checked type of
3075 PEEK-TYPE only after having read first character from a
3076 stream. (reported by Peter Graves)
3077 * bug fix: the garbage collector now has much better locality
3078 behaviour, and in particular no longer treats all memory as being
3079 exhausted when many small objects point to each other in a deeply
3081 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3082 recognized as being TYPEP their class.
3083 * bug fix: the PUSHNEW documentation string has been corrected.
3084 (thanks to Vincent Arkesteijn)
3085 * bug fix: defaulting of the value for the last of an atypically
3086 large number of multiple values being bound was not being
3087 performed correctly on the Alpha or PPC platforms
3088 * optimization: implemented multiplication as a modular
3089 (UNSIGNED-BYTE 32) operation on the x86 backend.
3090 * optimization: SEARCH on simple-base-strings can now be open-coded.
3091 (see also contrib/compiler-extras.lisp for inspiration for
3092 teaching the compiler about the Boyer-Moore algorithm).
3093 * value, returned by MAX (and MIN) called with several EQUALP, but
3094 not EQL, arguments now does not depend on compiler settings.
3095 * fixed some bugs revealed by Paul Dietz' test suite:
3096 ** in stack analysis liveness information is propagated from
3097 non-local entry points.
3098 ** pathwise CAST removing failed when the CAST node did not start
3100 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3101 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3103 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3104 host is already defined.
3105 ** RENAME-FILE works on streams instead of signalling an internal
3107 ** PEEK-CHAR uses the current readtable when determining whether
3108 or not a character is whitespace.
3109 ** MERGE-PATHNAMES handles the case when the pathname does not
3110 specify a name while the default-pathname specifies a version.
3111 ** Pathnames now stand a better chance of respecting print/read
3113 ** Attempting to use standardized file system operators with a
3114 pathname with invalid :DIRECTORY components signals a
3116 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3118 ** DIRECTORY on logical pathnames is more correct.
3119 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3120 signal a TYPE-ERROR if their argument is not a stream.
3121 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3122 designator argument does not designate a stream.
3123 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3124 examining the synonym.
3125 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3127 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3128 element-type larger than ([UN]SIGNED-BYTE 32).
3130 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3131 * When built with the :SB-FUTEX feature, threaded builds now take
3132 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3133 for faster/more reliable mutex and condition variable support.
3134 * Incompatible change (but one you probably shouldn't have been using
3135 anyway): the interface and code for arbitrating between multiple
3136 threads in the same user session has been redesigned.
3137 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3138 error when called without an explicit environment argument.
3139 (thanks to Nikodemus Siivola)
3140 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3141 confused about their position. (thanks to Adam Warner and Gerd
3143 * bug fix: Pretty printing backquoted forms with unquotations in the
3144 argument list position of various code constructs such as LAMBDA
3145 now works correctly. (reported by Paul Dietz)
3146 * bug fix: Pretty printing unquotations no longer loses all
3147 stream position information.
3148 * optimization: performance of string output streams is now less
3149 poor for multiple small sequence writes.
3150 * optimization: performance of CSUBTYPEP in the presence of complex
3151 expressions involving CONS and NOT many times has been improved.
3152 (reported by Paul Dietz)
3153 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3155 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3156 streams for the REPL, for the debugger, and so on. (thanks to
3158 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3159 * fixed some bugs revealed by Paul Dietz' test suite:
3160 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3161 is ignored if it is too small, rather than propagating through
3162 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3163 ** extremely complex negations of CONS types were not being
3164 sufficiently canonicalized, leading to inconsistencies in
3166 ** VALUES tranformer lost derived type.
3168 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3169 * fixed a bootstrapping bug: the build process no longer assumes
3170 that the various BOOLE-related constants have the same value in
3171 host and target lisps. (noted by Paul Dietz' test suite on an
3172 SBCL binary built from CLISP)
3173 * The system can now be dynamically linked on the MIPS platform,
3174 which enables dynamic loading of foreign code from Lisp. (thanks
3175 to Ralf Baechle for discussions on the MIPS ABI)
3176 * The system now records debugging information for its own source
3177 files in a filesystem-position-independent manner, relative to
3178 the "SYS" logical host.
3179 * fixed a compiler bug: MV-LET convertion did not check references
3180 to the "max args" entry point. (reported by Brian Downing)
3181 * tweaked disassembly notes to be less confident about proclaiming
3182 some instruction as an LRA. (thanks to Brian Downing)
3183 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3184 now each have their own history, command character, and other
3185 characteristics. (thanks to David Lichteblau)
3186 * fixed some bugs revealed by Paul Dietz' test suite:
3187 ** compiler failure in compiling LOGAND expressions including a
3189 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3190 shift greater than 32.
3191 ** FLUSH-DEST did not mark blocks for type check regeneration.
3192 ** HANDLER-CASE failed to accept declarations in handler clauses
3193 in some circumstances.
3195 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3196 * New code in contrib/sb-introspect (still probably not entirely
3197 stable yet) provides some support for smart Lisp development
3198 environments like SLIME.
3199 * The conditions signalled for errors occurring when loading .fasl
3200 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3201 in a way which should help ASDF recover gracefully.
3202 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3203 stuff has been cleaned up. If you code contrib/ stuff, this might
3204 affect you, and you can look at contrib/README, contrib/STANDARDS,
3205 and/or the 0.8.4.27 diff to check.
3206 * In full calls the compiler now does not generate checks for declared
3207 argument types for all arguments.
3208 * various threading fixes
3209 ** and some experimental patches which didn't make it into
3210 the main tree for this release, but which are shipped in
3211 contrib/experimental-thread.patch as a possible fix for some
3212 failures (deadlock, spinning...) in GC-intensive multithreaded
3214 * fixed PPC build problem (source code incompatibility of different
3215 library versions): added offsetof() hackery which attempts to divine
3216 where glibc maintainers put uc_mcontext today
3217 * fixed bug 282: compiler does not trust type assertions while passing
3218 arguments to a full call.
3219 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3220 &OPTIONAL VALUES type parameter.
3221 * fix bug 214: algorithm for noting rejected templates is now more
3222 similar to that of template seletion. (also reported by rydis on
3224 * fixed bug 141b: printing backquoted information readably and prettily
3225 inserts a space where necessary.
3226 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3227 (CHARACTER 10) are now reported as errors, rather than propagated
3228 as unknown types. (reported by piso on #lisp)
3229 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3230 with values NIL and :ERROR. (thanks to Milan Zamazal)
3231 * fixed bug 191c: CLOS now does proper keyword argument checking as
3232 described in CLHS 7.6.5 and 7.6.5.1.
3233 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3234 longer raise an error; further, using a list as a for-as-arithmetic
3235 counter now raises a meaningful error.
3236 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3237 now understood by sequence creation functions such as MAKE-SEQUENCE
3239 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3240 a STRING-INPUT-STREAM.
3241 * compiler enhancement: SIGNUM is now better able to derive the type
3243 * type declarations inside WITH-SLOTS are checked. (reported by
3245 * fixed some bugs revealed by Paul Dietz' test suite:
3246 ** incorrect optimization of TRUNCATE for a positive first
3247 argument and negative second.
3248 ** compiler failure in let-convertion during flushing dead code.
3249 ** compiler failure while deriving type of TRUNCATE on an
3250 interval, containing 0.
3251 ** ASH of a negative bignum by a negative bignum count now returns
3253 ** intersection of CONS types now canonicalizes properly, fixing
3254 inconsistencies in SUBTYPEP.
3256 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3257 * incompatible change: The --disable-debugger command line
3258 option now clobbers the debugger at a more fundamental
3259 level, by redefining #'INVOKE-DEBUGGER instead of by
3260 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3261 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3262 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3263 enter the debugger REPL and then suffer recursive errors
3264 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3265 while under the new system, BREAK in --disable-debugger mode
3266 terminates the system just as an unhandled error would.
3267 * fixed compiler performance when processing loops with a step >1;
3268 * bug fix: DOCUMENTATION now retrieves generic function
3269 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3270 support has been systematized, and now supports the methods
3271 specified by ANSI, along with a default method and a method for
3272 slot documentation. (reported by Nathan Froyd)
3273 * bug fix: effective methods associated with a generic function are
3274 no longer cached over a change of that generic function's method
3275 combination. (reported by Andreas Fuchs)
3276 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3277 names a non-existent directory. (thanks to Andreas Fuchs)
3278 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3279 the PPC platform, lead to stack corruption; this has been fixed.
3280 (reported by Rainer Joswig)
3281 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3282 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3283 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3284 arithmetic in general, is now much more reliable on the PPC
3286 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3287 platform now returns the right answer.
3288 * optimization: restored some effective method precomputation in
3289 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3290 precomputation is now tunable.
3291 * optimization: compiler-internal data structure use has been
3292 reviewed, and changes have been made that should improve the
3293 performance of the compiler by about 20%.
3294 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3295 simple-base-strings and simple-bit-vectors is improved.
3296 * optimization: the optimization of 32-bit logical and arithmetic
3297 functions introduced in version 0.8.3 on the x86 has been
3298 implemented on the mips, ppc and sparc platforms; an
3299 implementation of the same facility, but for 64-bit arithmetic,
3300 has been added for the alpha.
3301 * microoptimization: the compiler is better able to make use of the
3302 x86 LEA instruction for multiplication by constants.
3303 * bug fix: in some situations compiler did not report usage of
3304 generic arithmetic in (SPEED 3) policy.
3305 * bug 145b fix: compiler used wrong type specifier while converting
3306 MEMBER-types to numeric.
3307 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3309 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3310 index argument now works properly on the Alpha platform.
3311 * bug fix: floating point exception treatment on the Alpha platform
3313 * bug fix: FILE-POSITION works much better on string input and
3314 output streams. (thanks to Nikodemus Siivola)
3315 * bug fix: many threading/garbage collection symptoms sorted.
3316 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3317 might be pseudo-atomic.
3318 * internal change: Stopping for GC is now done with signals not
3319 ptrace. GC is now done in whichever thread wanted it, instead of
3321 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3323 * bug fix: result form in DO is not contained in the implicit
3325 * incompatible change: ICR structure is changed; the value part of
3326 CONTINUATION is now called LVAR; corresponding functions are
3327 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3328 * added type deriver for ISQRT (thanks to Robert E. Brown).
3329 * bug fix: better support for loading from the command line when an
3330 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3332 * fixed some bugs revealed by Paul Dietz' test suite:
3333 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3334 ** ROUND and FROUND now give the right answer when given very
3335 small float arguments.
3336 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3338 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3339 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3340 ** LCM should return a non-negative integer.
3341 ** PARSE-INTEGER returned the index of a terminator instead of the
3342 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3343 ** PARSE-INTEGER returned an incorrect index being applied to a
3345 ** LCM with two arguments of 0 returns 0 rather than signalling
3347 ** unsigned addition of a 32-bit constant with the high bit set no
3348 longer causes an internal compiler error on the x86.
3349 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3350 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3351 with negative last argument.
3352 ** byte specifiers with zero size and position no longer cause
3353 an error during type derivation.
3354 ** bignum multiplication on the Alpha platform now returns the
3356 * porting: The system now builds on SuSE AMD64, although it still
3357 generates a 32-bit binary.
3358 * .fasl file incompatibility: The fasl file version number has
3359 been incremented (because of the changes to internal compiler
3360 data structures referred to above).
3362 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3363 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3364 more accurately, on the Darwin kernel running on PowerPC hardware.
3365 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3366 * Compiler code deletion notes now signal a condition of type
3367 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3368 an associated MUFFLE-WARNING restart.
3369 * The compiler now performs limited argument count validation of
3370 constant format strings in FORMAT, and where appropriate in ERROR,
3371 CERROR and WARN. (thanks to Gerd Moellmann)
3372 * New ASDF-INSTALL contrib can be used for automatic download and
3373 installation of third-party Lisp code from CCLAN or other sites
3375 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3376 which forces another thread to execute a function supplied by the
3378 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3379 now accept and act upon their :ELEMENT-TYPE keyword argument.
3380 (reported by Martin Atzmueller, Edi Weitz)
3381 * bug fix: FILE-POSITION now accepts position designators up to
3382 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3383 is the greater. (thanks to Patrik Nordebo)
3384 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3385 Kalle Olavi Niemitalo)
3386 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3387 printable. (reported by Eric Marsden)
3388 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3389 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3390 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3391 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3392 (thanks to Stig Sandoe)
3393 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3394 UNREAD-CHAR now correctly includes the unread character in the
3395 target sequence. (thanks to Gerd Moellmann)
3396 * bug fix in threaded builds: the system can now be suspended and
3397 resumed by shell job control with minimal disruption.
3398 * bug fixes in times and timezones >2038AD
3399 * better handling of "where is GNU make?" problem in build scripts
3400 (thanks to Nikodemus Siivola)
3401 * new optimization: inside a named function any reference to a
3402 function with the same name is considered to be a self-reference;
3403 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3404 optimization quality.
3405 * new optimization on x86: logical functions and + now have
3406 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3407 used when the result is truncated to 32 bits.
3408 * VALUES declaration is partially enabled.
3409 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3410 * fixed some bugs revealed by Paul Dietz' test suite:
3411 ** The system now obeys the constraint imposed by
3412 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3413 types form a lattice under type intersection.
3414 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3415 ** ASSOC now ignores NIL elements in an alist.
3416 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3417 and (1+ MOST-POSITIVE-FIXNUM) answers.
3418 ** The addition of a method with invalid qualifiers to a generic
3419 function does not cause an error to be signalled immediately;
3420 a warning is signalled, and the error is generated only on
3421 calling the generic function.
3422 * changed .fasl file version number, in part to add type codes for
3423 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3424 obscure ANSI requirements
3426 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3427 * fixed bug 148: failure to inline-expand a local function left
3428 garbage, confusing the compiler.
3429 * fixed bugs 3cd: structure slot readers perform type check if the
3430 slot can have an invalid value (i.e. it is either not initialized
3431 or can be written with a less specific slot writer).
3432 * bug fix: the compiler now traps array references to elements off
3433 the end of an array; previously, the bounds checking in some
3434 circumstances could go off-by-one.
3435 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3437 * type declarations for array element types now obey the description
3438 on the CLHS page "Declaration TYPE", as per discussions on
3439 sbcl-help around 2003-05-08. This means that a declaration
3440 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3441 declaration, all references to BAR will be asserted or assumed
3442 (with THE, so dependent on compiler policy) to involve objects of
3443 type FOO. Note that no such declaration is implied in
3444 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3445 * declared types of functions from the "Conditions"
3446 chapter. (reported by Paul Dietz)
3447 * bug fix: CERROR accepts a function as its first argument.
3448 * bug fix: NTH an NTHCDR accept a bignum as index
3449 arguments. (reported by Adam Warner)
3450 * optimization: character compare routines now optimize comparing
3451 against a constant character. (reported by Gilbert Baumann)
3452 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3453 argument now works properly on the MIPS platform.
3454 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3455 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3456 declared to have a functional type, does not cause an error
3458 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3459 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3460 * fixed bug: if last continuation of a deleted block has a
3461 destination, this destination should be deleted too. (reported by
3463 * fixed a bug in the bootstrap process: the host compiler's values
3464 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3465 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3466 test case from Patrik Nordebo)
3467 * improved the ability of the disassembler on the PPC platform to
3468 provide helpful disassembly notes.
3469 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3470 the class in more cases than previously.
3471 * bug fix: FILE-POSITION now understands :START and :END for
3472 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3473 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3474 8) data. (thanks to David Lichteblau)
3475 * bug fix: it is possible to add a method to a generic function
3476 without lambda list.
3477 * bug fix: reader failed to signal END-OF-FILE inside an
3478 object representation. (reported by Nikodemus Siivola)
3479 * fixed some bugs revealed by Paul Dietz' test suite:
3480 ** LAST and [N]BUTLAST should accept a bignum.
3481 ** condition slot accessors are methods.
3482 ** (VECTOR NIL) is a subtype of STRING.
3484 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3485 * minor incompatible change: some nonsensical specialized lambda
3486 lists (used in DEFMETHOD) which were previously ignored now signal
3488 * minor incompatible change: the system is now aware of the types of
3489 variables in the COMMON-LISP package, and will signal errors for
3490 most violations of these type constraints (where previously they
3491 were silently accepted).
3492 * minor incompatible change: COMPILE-FILE now uses the freedom
3493 afforded (ANSI 3.2.2.3) to use derived function types for
3494 functions defined in the same file. This also permits the system
3495 to warn on static type mismatches and function
3496 redefinition. (Currently it does not work with high DEBUG level.)
3497 * minor incompatible change: VALUES declaration is disabled.
3498 * When issuing notes, the compiler now signals a condition of type
3499 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3500 restart for use in user handlers. It is expected that the
3501 COMPILER-NOTE condition will eventually become a condition
3502 supertype to a hierarchy of note types, which will then be
3503 handleable in a similar fashion. However, at the moment, no such
3504 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3505 but it's an implementation detail, not a classification for the
3507 * Changes in type checking closed the following bugs:
3508 ** type checking of unused values (192b, 194d, 203);
3509 ** template selection based on unsafe type assertions (192c, 236);
3510 ** type checking in branches (194bc).
3511 * A short form of VALUES type specifier has ANSI meaning (it has
3512 increased the number of situations when SBCL cannot perform type
3514 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3515 keywords or constants is permissible.
3516 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3517 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3518 classes. (thanks to Antonio Martinez)
3519 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3520 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3521 argument to a pretty-print stream. Instead, it leaves any such
3522 operations to DESCRIBE-OBJECT methods.
3523 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3525 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3526 lambda lists. (thanks to David Lichteblau)
3527 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3528 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3529 (thanks to Gerd Moellmann)
3530 * fixed bug 246: increased compilation speed of long
3531 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3533 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3535 * DEFCONSTANT now throws a condition of type
3536 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3537 constant to a non-EQL value; CONTINUE and ABORT restarts
3538 respectively change and preserve the value.
3539 * fixed bug 63: The code walker, part of the implementation of CLOS,
3540 is now better at handling symbol macros.
3541 * bug fix: There is no longer an internal implementation type named
3542 CL:LENGTH. (reported by Raymond Toy)
3543 * bug fix: In macro-like defining macros/special operators the
3544 implicit block does not enclose the lambda list.
3545 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3546 enclosed in parentheses) are not suitable as type specifiers, and
3547 their use properly signals an error now.
3548 * bug fix: An argument count mismatch for a type specifier in code
3549 being compiled no longer causes an unhandled error at compile
3550 time, but signals a compile-time warning.
3551 * fixed simple vector readable printing
3552 * bug fix: DESCRIBE takes more care over whether the class
3553 precedence list slot of a class is bound before accessing it.
3554 (reported by Markus Krummenacker)
3555 * bug fix: FORMATTER can successfully compile pretty-printer format
3556 strings which use variants of the ~* directive inside.
3557 * bug fix: SEARCH now applies its TEST predicate to the elements of
3558 the arguments in the correct order. (thanks to Wolfhard Buss)
3559 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3560 in type inference. (thanks to Robert E. Brown)
3561 * bug fix: Reading in symbols with an explicit package name of ""
3562 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3563 * fixed some bugs revealed by Paul Dietz' test suite:
3564 ** NIL is now allowed as a structure slot name.
3565 ** Arbitrary numbers, not just REALs, are allowed in certain
3566 circumstances in LOOP for-as-arithmetic clauses.
3567 ** Multiple class redefinitions before slot access no longer
3568 causes a type error.
3569 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3570 association between the name and a class.
3571 ** Generic functions with non-standard method-combination and over
3572 five methods all of which return constants no longer return NIL
3573 after the first few invocations. (thanks to Gerd Moellmann)
3574 ** CALL-NEXT-METHOD with no arguments now passes the original
3575 values of the arguments, even in the presence of assignment.
3576 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3578 ** DISASSEMBLE works with closures and funcallable instances.
3579 ** ADD-METHOD now returns the generic function, not the new method.
3580 ** FIND-METHOD signals an error if the lengths of the specializers
3581 is incompatible with the generic function, even if the ERRORP
3583 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3584 which its argument is a member.
3585 ** DEFCLASS only redefines the class named by its class-name
3586 argument if that name is the proper name of the class;
3587 otherwise, it creates a new class.
3588 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3589 of the UNBOUND-SLOT condition to the name of the slot.
3590 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3591 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3592 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3593 SLOT-MAKUNBOUND in the specified fashion.
3595 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3596 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3597 cross-compilation host. As a consequence, we can now bootstrap our
3598 way up to SBCL starting with a bare gcc toolchain and human-readable
3599 source code (first the source to CLISP, then the source to SBCL).
3600 * A contributed module containing a partial implementation of the
3601 simple-streams interface has been included. (thanks to Rudi
3603 * A contributed module implementing the RFC1321 Message Digest
3604 Algorithm, known as MD5, has been included.
3605 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3606 no longer has any effect, as the code controlled by this feature
3607 has been deleted. (As far as we know, no-one has ever built using
3608 this feature, and its semantics were confused in any case).
3609 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3610 work on conditions (as required by the ANSI specification),
3611 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3612 expected behaviour on conditions. Users should note, however,
3613 that such behaviour is not required by the ANSI specification,
3614 and so use of this behaviour may render their code unportable.
3615 * fixed some bugs revealed by Paul Dietz' test suite:
3616 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3618 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3619 ** SXHASH on condition objects no longer returns NIL.
3620 ** :ALLOCATION :CLASS slots are better treated; their values are
3621 updated on class redefinition, and initforms inherited from
3622 superclasses are applied.
3623 ** REMOVE-METHOD returns its generic function argument even when
3624 no method was removed.
3625 ** SHARED-INITIALIZE now initializes the values of the requested
3626 slots, including those with :ALLOCATION :CLASS.
3627 ** ALLOCATE-INSTANCE now works on structure classes defined via
3628 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3630 ** SLOT-EXISTS-P now works on conditions, as well as structures
3632 ** MAKE-LOAD-FORM now has the required methods on
3633 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3634 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3635 keyword, and now implements the SLOT-NAMES argument.
3636 ** methods with &OPTIONAL arguments no longer allow too many
3637 arguments to be passed in the call without error.
3638 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3639 option is consistent with the required arguments of the generic
3640 function lambda list.
3641 * bug fix: REQUIRE accepts a string designator. (Thanks to
3643 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3644 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3645 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3646 * bug fix: The compiler now checks for duplicated variables in macro
3648 * bug fix: SETQ on globals returns the correct value.
3649 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3650 not a COMPILER-ERROR (followed by some other strange error on
3651 choosing the CONTINUE restart).
3652 * bug fix: make.sh and friends are now more consistent in the way that
3653 they look for GNU "make".
3655 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3656 * experimental native threads support (on x86 Linux >=2.4 only).
3657 This is not compiled in by default: you need to add :SB-THREAD to
3658 the target features. See the "Beyond ANSI" chapter of the manual
3660 * fix for longstanding nonANSIism: The old distinction between
3661 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3662 The return value from CL:FIND-CLASS is now a CLOS class, and
3663 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3664 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3665 * An interface to the MetaObject Protocol, as described in Kiczales,
3666 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3667 MIT Press, 1991, is available from the SB-MOP package.
3668 * incompatible change: the SB-PCL package should now be considered
3669 a private implementation detail, and no longer a semi-private MOP
3671 * minor incompatible change: due to rearrangement for threads, the
3672 control stack and binding stack are now allocated at arbitrary
3673 addresses instead of being hardcoded per-port. Users affected by
3674 this probably have to be doing advanced things with shared
3675 libraries, and will know who they are.
3676 * minor incompatible change: Previously, all --eval forms used were
3677 processed with READ before any of them were processed with EVAL.
3678 Now each --eval form is processed with both READ and EVAL before
3679 the next --eval form is processed. (Thus package operations like
3680 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3681 work as the user might reasonably expect.)
3682 * minor incompatible change: *STANDARD-INPUT* is now only an
3683 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3685 * minor incompatible change: Y-OR-N-P is now character-oriented,
3686 not line oriented. Also, YES-OR-NO-P now works without errors.
3687 (thanks to Antonio Martinez)
3688 * sb-aclrepl module improvements: an integrated inspector, added
3689 repl features, and a bug fix to :trace command.
3690 * Known functions, which cannot be open coded by the backend, are
3691 considered to be able to check types of their arguments. (fixing
3692 a bug report by Nathan J. Froyd)
3693 * fixed a bug in computing method discriminating functions: It is
3694 now possible to define methods specialized on classes which have
3695 forward-referenced superclasses. (thanks to Gerd Moellmann)
3696 * fixed evaluation order in optional entries (reported by Gilbert
3698 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3699 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3700 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3701 required-by-AMOP NAME argument, as well as CLASS and
3702 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3703 * fixed bug 20: DEFMETHOD can define methods using names that are
3704 not the proper names of classes to designate class specializers.
3705 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3706 Unix file descriptors, instead of blowing up. (thanks to Antonio
3708 * Garbage collection refactoring: user-visible change is that a
3709 call to the GC function during WITHOUT-GCING will not do garbage
3710 collection until the end of the WITHOUT-GCING. If you were doing
3711 this you were probably losing anyway.
3712 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3713 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3714 TYPEP the latter but not the former.
3715 * The compiler issues a full WARNING for calls to undefined functions
3716 with names from the CL package.
3717 * MAP-INTO for a vector destination is open coded. (reported by
3718 Brian Downing on c.l.l)
3719 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3720 documentation string.
3721 * fixed some bugs revealed by Paul Dietz' test suite:
3722 ** COPY-ALIST now signals an error if its argument is a dotted
3724 ** Condition slots are now accessed more correctly in the presence
3725 of multiple initargs for a given slot.
3726 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3727 exclude restarts of the same name associated with a different
3729 ** DEFCLASS of forward-referenced classes with another
3730 forward-referenced class in the superclasses list no longer
3732 ** Condition slots are now initialized once each, not multiple
3733 times. (thanks to Gerd Moellmann)
3734 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3736 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3737 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3738 arguments contain duplicated elements.
3739 ** RESTART-CASE understands local macros.
3740 ** RESTART-CASE associates exactly its own restarts with a condition.
3741 ** ENDP in safe mode checks its argument to be of type LIST.
3742 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3743 in question is unbound.
3744 ** Optimized MAKE-INSTANCE functions no longer cause internal
3745 assertion failures in the presence of duplicate initargs.
3746 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3747 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3748 propagated even in the ctor optimized implementation of
3750 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3752 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3753 * a better implementation of SXHASH on (simple) bit vectors,
3754 measured both in execution speed and in distribution of results
3755 over the positive fixnums, has been installed. Likewise, a better
3756 implementation of EQUAL for simple bit vectors is now available.
3757 * fixed CEILING optimization for a divisor of form 2^k.
3758 * fixed bug 240 (emitting extra style warnings "using the lexical
3759 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3760 by Antonio Martinez)
3761 * fixed SXHASH, giving different results for NIL depending on type
3762 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3763 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3764 variable. (found by Rolf Wester)
3765 * SBCL does not ignore type declarations for special
3766 variables. (reported by rif on c.l.l 2003-03-05)
3767 * some bug fixes in contrib/sb-aclrepl/
3768 * fixed some bugs revealed by Paul Dietz' test suite:
3769 ** a bug in the CONS type specifier, whereby the CAR and CDR
3770 types got intertwined, has been fixed;
3771 ** the type system is now able to reason about the interaction
3772 between INTEGER and RATIO types more completely;
3773 ** APPEND, [N]REVERSE and NRECONC check that those their
3774 arguments, which must be proper lists, are really so;
3775 ** An array specialized to be unable to hold elements has been
3776 implemented, as required -- yes, really -- by ANSI;
3777 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3778 on malformed property lists;
3780 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3781 * incompatible packaging change: in line with Unix convention,
3782 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3783 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3784 * REQUIRE and PROVIDE are now optionally capable of doing something
3785 useful. See the documentation string for REQUIRE.
3786 * infrastructure for a managed SBCL contrib system: contributed
3787 modules in this release include:
3788 ** the ASDF system definition facility;
3789 ** an interface to the BSD Sockets API;
3790 ** an ACL-like convenience interface to the repl;
3791 (thanks to Kevin Rosenberg)
3792 ** an implementation of ROTATE-BYTE, with efficient implementation
3794 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3795 gives a closer approximation to the right answer than previously.
3796 (thanks to Raymond Toy)
3797 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3798 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3799 optional environment arguments, as required by ANSI.
3800 * fixed bugs in other functions taking environment objects, allowing
3801 calls with an explicit NIL environment argument to be compiled
3803 * fixed bug 228: primary return values from
3804 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3805 COMPILE or FUNCTION.
3806 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3807 :TYPE will no longer signal errors on innocuous objects.
3808 * fixed bug 231b: SETQ is better at respecting type declarations in
3809 the lexical environment.
3810 * fixed a bug in DEFCLASS: classes named by symbols with no or
3811 unprintable packages can now be defined.
3812 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3813 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3814 * fixed compiler failure related to checking types of functions.
3815 (reported by Robert E. Brown)
3816 * the compiler is now much more consistent in its error-checking
3817 treatment of bounding index arguments to sequence functions: in
3818 (SAFETY 3) code, errors will be signalled in almost all cases if
3819 invalid sequence bounding indices are passed to functions defined
3820 by ANSI to operate on sequences.
3821 * fixed a bug in the build procedure: documentation of SBCL-specific
3822 packages is now preserved and available in the final Lisp image.
3823 * lifted FDEFINITION lookup out of loops in the implementation of
3824 many list operations. (thanks to Robert E. Brown)
3825 * fixed a bug in the reader: the #n# reader macro now works for
3826 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3827 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3828 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3829 E. Brown and Tony Martinez respectively)
3830 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3831 SLOT-BOUNDP: in particular, it is now able to optimize them much
3832 better, and is now not vulnerable to having packages renamed.
3833 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3834 always called when a slot is not present in an instance. (thanks
3836 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3837 longer signal an error on unreading a character following EOF on
3838 the previous constituent stream. (thanks to Tony Martinez)
3839 * fixed some bugs revealed by Paul Dietz' test suite:
3840 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3841 not just nonnegative fixnums;
3842 ** the logical bit-array operators such as BIT-AND now accept an
3843 explicit NIL for their "opt-arg" argument (to indicate a
3844 freshly-consed result bit-array);
3845 ** ELT now signals an error on an invalid sequence index in safe
3847 ** the type system is now cleverer about negations of numeric
3848 types, and consequently understands the BIGNUM and RATIO types
3850 ** the type system is now cleverer about the interaction between
3851 INTEGER and RATIO types: while bugs still remain, many more
3852 cases are accurately computed;
3853 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3854 if it is in the last clause;
3855 ** CONSTANTLY now correctly returns a side-effect-free function in
3857 ** DECLARE is no longer treated as a special-operator; in
3858 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3859 * incremented fasl file version number due to the change in the
3860 DEFSTRUCT-SLOT-DESCRIPTION structure.
3862 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3863 * minor incompatible change: code processed by the "interpreter" or
3864 EVAL now has a compilation optimization policy of (DEBUG 2)
3865 (changed from (DEBUG 1)) to improve debuggability of interactive
3866 development, and to allow the use of the debug RETURN command in
3868 * an experimental implementation of the RETURN command for the
3869 debugger has been included. (thanks to Frederik Kuivinen)
3870 * fixed bug 62: constraints were not propagated into a loop.
3871 * fixed bug in embedded calls of SORT (reported and investigated by
3873 * fixed some bugs revealed by Paul Dietz' test suite:
3874 ** printing and reading of arrays with some dimensions having
3875 length 0 (thanks to Gerd Moellmann);
3876 ** BOA constructor with &AUX argument without a default value does
3877 not cause a type error;
3878 ** CONSTANTP now returns true for all self-evaluating objects.
3880 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3881 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3882 accessors that are related by inheritance, as specified in the
3883 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3884 Valtteri Vuorikoski)
3885 * The compiler is now able to inline functions that were defined in
3886 a complex lexical environment (e.g. inside a MACROLET).
3887 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3889 * Support for the upcoming FreeBSD-5.0 release has been included.
3890 (thanks to Dag-Erling Smorgrav)
3891 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3892 effect when it is not in a toplevel context.
3893 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3894 stand a better chance of being correct. (thanks to Gerd
3896 * fixed bug in COERCE, which now signals an error on coercing a
3897 rational to a bounded real type which excludes the expected
3899 * The compiler is now able to derive types more accurately from the
3900 COERCE and COMPILE functions.
3901 * fixed bug 223: functional binding is considered to be constant
3902 only for symbols in the CL package.
3903 * fixed bug 231: SETQ did not check the type of a variable being set
3904 (reported by Robert E. Brown)
3905 * A new optimization for MAKE-INSTANCE has been included, fixing
3906 various bugs (including relating to :ALLOCATION :CLASS slots and
3907 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3909 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3910 ** As required by ANSI, LOOP now disallows anonymous collection
3911 clauses such as COLLECT I in conjunction with aggregate boolean
3912 clauses such as THEREIS (= I 1);
3913 ** LOOP now signals an error when any variable is reused in the
3914 same loop (including the potentially useful construct analogous
3915 to WITH A = 1 WITH A = (1+ A);
3916 ** IT is only a special loop symbol within the first clause of a
3917 conditional loop clause;
3918 ** LOOP with a typed iteration variable over a hashtable now
3919 signals a type error iff it should.
3920 * fixed some other bugs revealed by Paul Dietz' test suite:
3921 ** FILE-STREAM now names the class previously known as FD-STREAM;
3922 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3923 argument) no longer signals an error;
3924 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3925 of the slot symbol, rather than using the current package
3926 ((:CONC-NAME "") continues to intern the slot's name in the
3928 * incremented fasl file version number, because of the incompatible
3929 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3930 of the new implementation of DEFINE-COMPILER-MACRO.
3932 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3933 * Support for building SBCL for MIPS platforms running in
3934 little-endian mode has now been checked in, and basic
3935 functionality on said platforms verified.
3936 * minor incompatible change: PCL now records the pathname of a file
3937 in which methods and the like are defined, rather than its
3939 * minor incompatible change: TRUENAME now considers the truename of
3940 a file naming a directory to be the pathname with :DIRECTORY
3941 component indicating that directory.
3942 * minor incompatible change: a NAMED clause in the extended form of
3943 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3944 reason for the previous behaviour is unclear.
3945 * more systematization and improvement of CLOS and MOP conformance
3946 in PCL (thanks to Gerd Moellman and Pierre Mai):
3947 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3949 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3950 primary methods with no specializers;
3951 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3953 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3954 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3955 FORWARD-REFERENCED-CLASSes; error reporting on
3956 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3958 ** SXHASH on CLOS instances now uses a slot internal to the
3959 instance to return different numbers on distinct instances,
3960 while preserving the same return value through invocations of
3962 ** DEFMETHOD signals errors when methods with longer incongruent
3963 lambda lists are added to generic functions;
3964 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3965 CLASS, as specified in AMOP;
3966 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3967 on the order returned by the primary method for classes of
3968 class STANDARD-CLASS;
3969 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3970 * fixed some bugs shown by Paul Dietz' test suite:
3971 ** DOLIST puts its body in TAGBODY;
3972 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3974 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3975 value producing form;
3976 ** if more variables are given to PROGV than values, extra
3977 variables are bound and made to have no value;
3978 ** NSUBSTITUTE on list arguments gets the right answer with
3980 ** ELT signals an error of type TYPE-ERROR when the index argument
3981 is not a valid sequence index;
3982 ** LOOP signals (at macroexpansion time) an error of type
3983 PROGRAM-ERROR when duplicate variable names are found;
3984 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3985 ** FUNCALL of special-operators now cause an error of type
3987 ** PSETQ now works as required in the presence of side-effecting
3988 symbol-macro places;
3989 ** NCONC accepts any object as its last argument;
3990 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3992 ** loop-for-as-package does not require a package to be explicitely
3994 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3996 * fixed bug 166: compiler preserves "there is a way to go"
3997 invariant when deleting code.
3998 * fixed bug 172: macro lambda lists with required arguments after
3999 &REST arguments now cause an error to be signalled. (thanks to
4001 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4002 bug. (thanks to Matthew Danish)
4003 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4005 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4006 arguments are lexically rebound. (thanks to Gerd Moellmann and
4008 * fixed bug 194: error messages are now more informative when there
4009 is no primary method applicable in a call to a generic
4010 function. (thanks to Gerd Moellmann)
4011 * fixed bug in command line argument checking (thanks to Julian
4013 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4014 (thanks to Matthew Danish)
4015 * incremented fasl file version number, because of the
4016 SXHASH-related changes in the layout of CLOS data structures
4018 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4019 * minor incompatible change: The runtime (the Unix executable named
4020 "sbcl") is now much pickier about the .core files it will load.
4021 Essentially it now requires .core files to descend from the same
4022 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4023 as the runtime does. (The intent is to prevent the crashes which
4024 can occur, and which can even be reported as mysterious failures,
4025 when people patch the sources or change the build parameters
4026 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4027 sbcl and .core files.)
4028 * fixed bug: VALUES-LIST is no longer optimized away.
4029 * fixed bug 142: The FFI conversion of C string values to Lisp
4030 string values no longer conses excessively. (thanks to Nathan
4031 Froyd porting Raymond Toy's fix to CMU CL)
4032 * began to systematize and improve MOP conformance in PCL (thanks to
4033 Nathan Froyd, Gerd Moellman and Pierre Mai):
4034 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4036 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4037 ** FINALIZE-INHERITANCE is now called on class finalization;
4038 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4039 argument precedence order.
4040 * fixed bug 202: The compiler no longer fails on functions whose
4041 derived types contradict their declared type.
4042 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4043 so it can be non-toplevel.
4044 * The fasl file version number has changed (because of the new
4045 implementation of DEFMACRO).
4046 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4047 safe code, that any length requirement by their type-specifier
4048 argument is valid. The exceptions to this are described in bug
4050 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4051 functions now check the types of their inputs as required by ANSI.
4052 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4053 introduced symbol is DECLAREd to be SPECIAL.
4054 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4055 * fixed bug: :COUNT argument to sequence functions may be negative
4056 * fixed bug: body of DO-SYMBOLS may contain declarations
4057 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4058 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4059 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4060 symbol macro only once
4061 * fixed printing of call frame when argument list is unavailable
4062 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4063 * compiler no longer signals WARNING on unknown keyword
4066 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4067 * A beta-quality port to the mips architecture running Linux,
4068 based on the old CMUCL backend, has been made. It has been tested
4069 on a big-endian kernel, and works sufficiently well to be able to
4070 rebuild itself; it has not been tested in little-endian mode.
4071 * fixed an inconsistency between gencgc.c and purify.c which made
4072 dumping/loading .core files unreliable
4073 * fixed bug 120a: The compiler now deals correctly with IFs where
4074 the consequent is the same as the alternative, instead of
4075 misderiving the return type. (thanks to Alexey Dejneka)
4076 * fixed bug 113: Logical pathnames are now dumpable (the logical
4077 host is resolved at load-time, throwing an error if it is not
4079 * fixed bug 174: FORMAT's error message is slightly clearer when a
4080 non-printing character is used in a format directive.
4081 * fixed several bugs in compiler checking of type declarations, i.e.
4082 violations of the Python "declarations are assertions" principle
4083 (thanks to Alexey Dejneka)
4084 * fixed several bugs in PCL's error checking (thanks to Gerd
4086 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4088 * fixed bug in compilation of functions as first class values
4089 (thanks to Antonio Martinez-Shotton)
4090 * The compiler's handling TYPE-ERRORs which it can prove will
4091 inevitably happen at runtime has been cleaned up and corrected
4092 in several ways. (thanks to Alexey Dejneka)
4093 * improved argument type checking for various basic arithmetic
4094 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4095 lavished on them in the past that they can be compiled in many
4096 ways in different special cases
4097 * fixed bug 181: compiler checks validity of user supplied type
4099 * cleaned up code flushing in optimization: Function calls which
4100 should signal errors for safety purposes (e.g. which ANSI says
4101 should signal errors when their arguments are of incorrect type)
4102 are no longer optimized away.
4103 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4104 * incremented fasl file version number, because changes in the
4105 implementation of sequence functions like COERCE caused
4106 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4107 in old inline expansions) to become undefined. (Actually these
4108 changes were later undone, so we might very well be binary
4109 compatible with 0.7.7 after all, but leaving the version number
4110 incremented seemed like the simplest and most conservative
4113 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4114 * An alpha-quality port to the parisc architecture running Linux,
4115 based on the old CMUCL backend, has been made. This, even more so
4116 than the other backends, should be considered still a work in
4117 progress; known problems include that the Linux kernel in 64-bit
4118 mode does not propagate the correct sigcontext structure to
4119 userspace, and consequently SBCL on a parisc64 kernel will not
4121 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4122 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4123 suppressed.) Also now that the compiler is looking at declarations
4124 in the environment, it checks optimization declarations as well,
4125 and suppresses inlining when (> DEBUG SPEED).
4126 * More fixes have been made to treatment of floating point exception
4127 treatment and other Unix signals. In particular, floating point
4128 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4129 * The detection and handling of control stack exhaustion (infinite
4130 or very deeply nested recursion) has changed. Stack exhaustion
4131 detection is now done by write-protecting pages at the OS level
4132 and applies at all optimization settings; when found, a
4133 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4134 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4135 be caught using IGNORE-ERRORS.
4136 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4137 correctly when transforming recursive LABELS functions to LETs.
4138 (thanks to Alexey Dejneka)
4139 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4140 that are names of constants or global variables.
4141 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4142 alien routines with docstrings.
4143 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4144 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4146 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4147 (thanks to Eric Marsden)
4148 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4149 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4150 * Bug fix: The SPARC backend can now compile functions involving
4151 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4152 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4153 to a functions expecting a PATHNAME-DESIGNATOR.
4154 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4155 lambda lists. (thanks to Alexey Dejneka)
4156 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4157 functions so that EXPORTing the name of the class doesn't cause
4158 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4159 to Antonio Martinez for reporting this)
4160 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4161 constant-folded without failing an assertion. (thanks to Einar
4162 Floystad Dorum for reporting this)
4163 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4164 types are now dealt with more correctly by the compiler.
4165 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4166 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4167 behaviour analogous to RENAME-FILE. This puts its behaviour more
4168 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4170 * The fasl file version number has changed again. (because of the
4171 bug fix involving the names of PCL MAKE-INSTANCE functions)
4173 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4174 * bug fix: Floating point exceptions are treated much more
4175 consistently on the x86/Linux and PPC/Linux platforms.
4176 * Array initialization with :INITIAL-ELEMENT is now much faster for
4177 cases when the compiler cannot open code the array creation, but
4178 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4179 array accesses have also seen a speed increase.
4180 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4181 specified. (This was at the root of some bad interactions between
4182 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4184 * bug fix: Internal error arguments for undefined functions are now
4185 computed correctly on the PPC/Linux platform.
4186 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4187 Raymond Toy's patch for CMU CL)
4188 * Support for the Solaris 9 operating environment has been included
4189 (thanks to Daniel Merritt)
4190 * A very ugly but hopefully complete draft of the missing FFI chapter
4191 of the manual has been created by reformatting the corresponding
4192 CMU CL manual chapter into (currently very ugly and incoherent)
4193 DocBook and bringing it up to date for SBCL behavior. Thus, the
4194 manual is now essentially complete, at least by my extreme
4195 once-and-only-once standards, whereby it's acceptable to refer to
4196 the doc strings of SB-EXT functions as the primary documentation.
4197 * The fasl file version number has changed again, due to cleanup of
4198 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4199 is no longer a static symbol.)
4201 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4202 * SBCL now builds with OpenMCL (version 0.12) as the
4203 cross-compilation host; also, more progress has been made toward
4204 bootstrapping under CLISP.
4205 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4207 * bug 158 fixed: The compiler can now deal with integer loop
4208 increments different from 1; fixing this turned out also to fix
4210 * bug 169 fixed: no more bogus warnings about using lexical bindings
4211 despite the presence of perfectly good SPECIAL declarations (thanks
4212 to David Lichteblau)
4213 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4214 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4215 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4217 * bug 180 fixed: Method combination specifications no longer ignore
4218 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4219 * bug fix: Structure type predicate functions now check their argument
4220 count as they should.
4221 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4222 correctly. (thanks to Pierre Mai)
4223 * minor incompatible change: The --noprogrammer option is deprecated
4224 in favor of the new --disable-debugger option, which is very similar.
4225 (The major difference is that it takes effect at a slightly different
4226 time at startup, causing handling of errors in --sysinit and
4227 --userinit files will be affected differently.) The
4228 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4229 been added to allow this functionality to be controlled from ordinary
4230 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4231 maintainers, who might want to run non-interactive scripts to
4232 build SBCL cores which will later be used interactively.)
4233 * minor incompatible change: The LOAD function no longer, when given
4234 a wild pathname to load, loads all files matching that pathname.
4235 Instead, an error of type FILE-ERROR is signalled.
4237 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4238 * bug 147 fixed: The compiler preserves its block link/count
4239 invariants more correctly now so that it doesn't crash. (thanks
4241 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4243 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4244 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4245 no-value-for-this-character as NIL (as specified by ANSI).
4246 * HOST-NAMESTRING on physical pathnames now returns a string that is
4247 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4248 (thanks to Christophe Rhodes)
4249 * The Alpha port handles icache flushing more correctly. (thanks to
4251 * More progress has been made toward bootstrapping under CLISP. (thanks
4252 to Christophe Rhodes)
4253 * The fasl file format has changed again, because dynamic loading
4254 on OpenBSD (which has non-ELF object files) motivated some cleanups
4255 in the way that foreign symbols are transformed and passed around.
4256 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4257 is no longer treated as whitespace by the reader, but instead as
4258 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4259 |A
\7fB|, instead of A as it used to.
4261 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4262 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4263 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4264 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4265 this as of 0.7.1.45, but was left out of the previous news section
4266 (thanks to Dan Barlow)
4267 * SBCL now runs on the Solaris operating system on SPARC architectures
4268 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4269 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4270 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4271 * SPARC backend cleanups, allowing builds of cores optimized for V8
4272 and V9 SPARCS, and also emission of code targeted to a particular
4273 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4275 * SBCL is closer to bootstrapping under CLISP, thanks to various
4276 fixes by Christophe Rhodes.
4277 * The fasl file format has changed again, to allow the compiler's
4278 INFO database to support symbol macros.
4279 * The user manual (in doc/) is formatted into HTML more nicely.
4280 (thanks to coreythomas)
4281 * The system is smarter about SUBTYPEP relationships, especially
4282 those involving NOT types (including types such as ATOM which are
4283 represented internally using NOT types). Thus SUBTYPEP is less
4284 likely to return (VALUES NIL NIL) in general, and in particular
4285 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4287 * The fasl file format has changed again, because the internal
4288 representation of types now includes a new slot to support the new
4289 SUBTYPEP-of-NOT-types logic.
4290 * (not a change in the main branch of SBCL, but a related prototype
4291 which can hopefully be merged into the main branch of SBCL in the
4292 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4293 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4294 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4295 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4296 dispatch macro character combinations. (thanks to Alexey Dejneka)
4297 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4298 that superficially look like logical namestrings correctly.
4299 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4301 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4302 default supplied-p) for &optional and &key arguments. (thanks to
4305 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4306 * incompatible change: The compiler is now less aggressive about
4307 tail call optimization, doing it only when (> SPACE DEBUG) or
4308 (> SPEED DEBUG). (This is an incompatible change because there are
4309 programs which relied on the old CMU-CL-style behavior to optimize
4310 away their unbounded recursion which will now die of stack overflow.)
4311 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4312 for non-GENCGC systems has been increased to 20M (since that
4313 seems much closer to the likely performance optimum for modern
4314 systems than the old 4M value was)
4315 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4316 and *DEBUG-PRINT-LEVEL*
4317 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4318 of CMU CL's support for SPARC, and various endianness and other
4319 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4320 * new syntactic sugar for the Unix command line: --load foo.bar is now
4321 an alternate notation for --eval '(load "foo.bar")'.
4323 ** The system now detects stack overflow and handles it gracefully,
4324 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4325 optimization settings. (This is a good thing in general, and
4326 its introduction in this version should be particularly timely
4327 for anyone whose code fails because of suppression of tail
4329 ** The system now hunts for the C variable "environ" in a more
4330 devious way, to avoid segfaults when the C library version differs
4331 between compile time and run time. (thanks to Christophe Rhodes)
4332 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4333 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4334 ** The compiler no longer issues bogus style warnings for undefined
4335 classes in the same source file as the DEFCLASSes which defined
4336 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4338 ** fixes in CONDITION class precedence list for undefined function
4339 errors (thanks to Alexei Dejneka)
4340 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4341 correctly. (thanks to Dan Barlow)
4342 ** portability fixes aiming at bootstrapping under CLISP (thanks
4343 to Dave McDonald and Christophe Rhodes)
4344 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4345 ** fixes in type translation and and type inference (thanks to
4347 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4348 ** various fixes in the new ports (thanks to Dan Barlow)
4349 * several changes related to debugging:
4350 ** suppression of tail recursion, as noted above
4351 ** stack overflow detection, as noted above
4352 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4353 is now the default. (For some time encapsulation has been more
4354 reliable than the breakpoint-based :ENCAPSULATE NIL
4355 implementation, at least on X86 systems; and I just noticed that
4356 encapsulation also seems closer to the spirit of the ANSI
4359 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4361 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4362 up properly again. (There was a packaging bug in 0.7.0 which
4363 left their definitions in SB-SYS::LOAD-FOREIGN and
4364 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4365 vital for most things which interface to C-level interfaces,
4366 like extensions working with sockets or databases or
4367 Perl-compatible regexes or whatever, and the need to fix
4368 this bug is the main reason that 0.7.1 was released so
4370 ** DEFGENERIC is now choosier about the methods it redefines, so that
4371 reLOADing a previously-LOADed file containing DEFGENERICs does
4372 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4373 cycle now works as it should. (thanks to Alexey Dejneka)
4374 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4375 fixed by Christophe Rhodes. (He actually submitted this patch
4376 months ago, and I delayed until after 0.7.0.)
4377 ** Bug 111 (internal compiler confusion about runtime checks on
4378 FUNCTION types) was fixed by Alexey Dejneka.
4379 * Some internal cleanups (getting rid of variables which aren't
4380 needed now that the byte interpreter is gone) caused the fasl
4381 file format number to change again.
4383 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4384 * major incompatible change: The default fasl file extension, i.e. the
4385 default extension for files produced by COMPILE-FILE, has changed
4386 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4388 ** There are many changes in the implementation of the compiler.
4389 SBCL is now essentially a compiler-only implementation of ANSI
4390 Common Lisp. EVAL still "interprets" a few special cases, but
4391 almost all the interesting cases are handled by creating
4392 a LAMBDA expression, calling COMPILE on it, then calling
4393 FUNCALL on the result.
4394 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4395 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4396 Since the code is newer, there might still be some new bugs
4397 (though not as many as before Martin Atzmueller's fixes:-). But
4398 the new code is substantially simpler and clearer, and hopefully
4399 any remaining bugs will be simpler, less fundamental, and more
4400 fixable then the bugs in the old code.
4401 ** The revised compiler is still a little unsteady on its feet.
4403 *** The debugging information it produces (particularly the names
4404 of FUNCTION objects) is sometimes much less useful than what
4405 the old compiler produced.
4406 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4407 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4408 within a MACROLET) has been temporarily weakened.
4409 ** There are new compiler optimizations for various functions:
4410 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4411 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4412 *** the math functions TRUNCATE, FLOOR, and CEILING
4413 *** the function-of-all-trades COERCE
4414 Mostly these should be transparent, but there's one
4415 potentially-annoying problem (bug 117): when the compiler
4416 inline-expands a function and does type analysis on the result,
4417 it can create control paths which have type mismatches, and
4418 when it can't prove that those control paths aren't taken,
4419 it will issue WARNINGs about the type mismatches. This is
4420 a particular problem in practice for the new sequence functions.
4421 It's not clear how this should be fixed, and for now, a
4422 workaround is given in the entry for 117 in the BUGS file.
4423 ** (Because of the interaction between the two previous items --
4424 occasional inlining problems and new inline expansions -- some
4425 of the new sequence function optimizations won't really kick in
4426 completely until debugging information, and then inlining, are
4427 straightened out in some future version.)
4428 * minor incompatible changes:
4429 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4430 DIRECTORY no longer implicitly promotes NIL slots of its
4431 pathname argument to :WILD. In particular, when you ask for the
4432 contents of a directory (which you used to be able to do without
4433 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4434 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4435 ** changes in behavior that ANSI explicitly defines to be
4436 implementation dependent:
4437 *** The new compiler-only implementation still conforms with ANSI,
4438 but acts a little different than before. Besides the obvious
4439 changes in performance tradeoffs (that the cost per form passed
4440 to EVAL has gone up, and the cost per form executed by EVAL
4441 has gone down), the behavior of the system changes a little
4442 because there are no longer any interpreted function objects.
4443 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4444 e.g. doing COMPILE on the output of interactive DEFUN is
4446 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4448 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4449 has changed from (:CL) to NIL.
4450 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4451 e.g. #\Newline and #\Tab, don't have names specified in the
4452 ANSI Common Lisp standard, is now based on their ASCII symbolic
4453 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4454 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4455 are no longer used for output.
4456 ** changes in internal implementation constants:
4457 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4458 4 million. (If your application spends a lot of time GCing and
4459 you have a lot of RAM, you might want to experiment with
4460 increasing it even more.)
4461 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4462 However, almost all old code should still continue to work without
4463 immediate update, as SB-C-CALL is now a (deprecated) nickname
4465 ** Old operator names in the style DEF-FOO are now deprecated in
4466 favor of new corresponding names DEFINE-FOO, for consistency with
4467 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4468 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4469 internal symbols, but a few supported extensions like
4470 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4471 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4472 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4473 etc. as you get deeper into recursive calls to the debugger
4474 command loop, instead of the old "5]", "5]]", "5]]]"
4475 sequence. (I was motivated to do this when squabbles between
4476 ILISP and SBCL left me very deeply nested in the debugger. In the
4477 short term, this change will probably provoke more ILISP/SBCL
4478 squabbles, but hopefully it will be an improvement in the long run.)
4479 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4480 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4481 function, since declaiming return types involving aliens is
4482 (1) annoyingly messy to do by hand and (2) vital to efficient
4483 compilation of code which calls such functions.
4484 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4485 longer reexported by the SB-EXT package. They're solely useful
4486 for alien code, so it seems more logical that you should get
4487 them from the SB-ALIEN package, not in SB-EXT.
4488 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4489 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4490 features. Instead, the code that they used to control is always
4491 built into the system.
4492 * many other bug fixes
4493 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4494 advantage of the new EVAL-WHEN stuff and to clean them up in
4495 general, and they are now more ANSI-compliant in a number of
4496 ways. Martin Atzmueller is responsible for a lot of this.
4497 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4499 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4500 *** correct ERROR type for various file operations
4501 *** some fixes for Lisp streams
4502 *** DEFMETHOD syntax checking
4503 *** changing old weird representation of debug information as
4504 strings (which, among their other deficiencies, don't transform
4505 correctly when you rename packages, and don't change their
4506 print representation when you change things like *PACKAGE*
4507 and *PRINT-LENGTH*) to symbols and lists of symbols
4508 He also made several improvements and fixed several bugs in DESCRIBE.
4509 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4511 *** misbehavior of WRITE-STRING/WRITE-LINE
4512 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4513 and several other LOOP problems as well
4514 *** DIRECTORY when similar filenames are present
4515 *** DEFGENERIC with :METHOD options
4516 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4517 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4518 *** argument ordering in FIND with :TEST option
4519 *** mishandled package designator argument in APROPOS-LIST
4520 *** various problems in the backquote readmacro
4521 *** a bug in APROPOS
4522 *** probably some others that I'm not describing very well here,
4523 since the CVS log documents them by reference to sbcl-devel
4524 messages, and the SourceForge archives aren't working well.:-(
4525 ** Dan Barlow improved the Alpha port (and is making progress on the
4526 PPC port, for those of you who think different).
4527 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4528 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4529 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4530 continues to work on the SPARC port (for those of you in a position
4531 to look down upon our little PC-compatible boxes from a great height).
4532 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4533 and uses that copy, rather than the current dynamic value, when
4534 it's trying to decide whether to truncate output. Thus e.g.
4535 (let ((*print-lines* 50))
4536 (pprint-logical-block (stream nil)
4538 (let ((*print-lines* 8))
4539 (print (aref possiblybigthings i) stream)))))
4540 should now truncate the logical block only at 50 lines, instead of
4541 often truncating it at 8 lines, as it did before.
4542 * The doc/cmucl/ directory, containing old CMU CL documentation
4543 from the time of the fork, is no longer part of the base system.
4544 SourceForge has shut down its anonymous FTP service, and with it
4545 my original plan for distributing the old CMU CL documentation
4546 there. For now, if you need these files you can download an old
4547 SBCL source release and extract them from it.
4548 * The fasl file version number changed again, for dozens of reasons,
4549 some of which are apparent above.
4551 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4552 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4553 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4554 patch, so that DISASSEMBLE output is much nicer.
4555 * The code in the SB-PROFILE package now seems reasonably stable.
4556 I still haven't decided what the final interface should look like
4557 (I'd like PROFILE to interact cleanly with TRACE, since both
4558 facilities use function encapsulation) but if you have a need
4559 for profiling now, you can probably use it successfully with
4560 the current CMU-CL-style interface.
4561 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4562 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4563 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4564 link now returns the dangling link itself, and for similar
4565 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4566 link itself. (In these cases the old code signalled an error and
4567 looped endlessly, respectively.) Thus, DIRECTORY now works even
4568 in the presence of dangling and cyclic symbolic links.
4569 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4570 is now a supported extension again, since the consensus on
4571 sbcl-devel was that it can be useful for ordinary development
4572 work, not just for debugging SBCL itself.
4573 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4574 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4575 that currently-defined functions might be redefined later with
4576 different return types.
4577 * Hash tables can be printed readably, as inspired by CMU CL code
4578 of Eric Marsden and SBCL code of Martin Atzmueller.
4579 * better error handling in CLOS method combination, thanks to
4580 Martin Atzmueller porting Pierre Mai's CMU CL patches
4581 * more overflow fixes for >16Mbyte I/O buffers
4582 * A bug in READ has been fixed, so that now a single Ctrl-D
4583 character suffices to cause end-of-file on character streams.
4584 In particular, now you only need one Ctrl-D at the command
4585 line (not two) to exit SBCL.
4586 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4588 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4589 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4590 does the right thing.
4591 * The implementation of some type tests, especially for CONDITION
4592 types, is now tidier and maybe faster, due to CMU CL code
4593 originally by Douglas Crosher, ported by Martin Atzmueller.
4594 * Some math functions have been fixed, and there are new
4595 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4596 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4597 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4598 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4599 likely to be built into sbcl-0.7.0.)
4600 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4601 CL, ported to SBCL by Martin Atzmueller)
4602 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4603 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4604 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4605 * There's a new slam.sh hack to shorten the edit/compile/debug
4606 cycle for low-level changes to SBCL itself, and a new
4607 :SB-AFTER-XC-CORE target feature to control the generation of
4608 the after-xc.core file needed by slam.sh.
4609 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4610 COMPILE-FILE is no longer supported, so that now every function
4611 gets an entry point, so that block compilation looks a little
4612 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4613 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4614 returns the number of bytes consed since the system started,
4615 rather than the number consed since the first time the function
4616 was called. (The new definition parallels ANSI functions like
4617 CL:GET-INTERNAL-RUN-TIME.)
4618 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4619 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4620 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4621 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4622 * Fasl file version numbers are now independent of the target CPU,
4623 since historically most system changes which required version
4624 number changes have affected all CPUs equally. Similarly,
4625 the byte fasl file version is now equal to the ordinary
4628 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4629 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4630 is no longer recognized. I apologize for this, because it was
4631 listed in SB-EXT as a supported extension, but I found that
4632 its existing behavior was poorly specified, as well as incorrectly
4633 specified, and it looked like too much of a mess to straighten it
4634 out. I have enough on my hands trying to get ANSI stuff to work..
4635 * many patches ported from CMU CL by Martin Atzmueller, with
4636 half a dozen bug fixes in pretty-printing and the debugger, and
4637 half a dozen others elsewhere
4638 * fixed bug 13: Floating point infinities are now supported again.
4639 They might still be a little bit flaky, but thanks to bug reports
4640 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4641 as flaky as they were.
4642 * The --noprogrammer command line option is now supported. (Its
4643 behavior is slightly different in detail from what the old man
4644 page claimed it would do, but it's still appropriate under the
4645 same circumstances that the man page talks about.)
4646 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4647 are now supported, and enabled by default. Thus, the compiler can
4648 handle many floating point and complex operations much less
4649 inefficiently. (Thus e.g. you can implement a complex FFT
4651 * The compiler now detects type mismatches between DECLAIM FTYPE
4652 and DEFUN better, and implements CHECK-TYPE more correctly, and
4653 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4654 thanks to patches from Martin Atzmueller.
4655 * various fixes to make the cross-compiler more portable to
4656 ANSI-conforming-but-different cross-compilation hosts (notably
4657 Lispworks for Windows, following bug reports from Arthur Lemmens)
4658 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4659 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4660 fixed thanks to Pierre Mai's CMU CL patches.
4661 * fixes to keep the system from overflowing internal counters when
4662 it tries to use i/o buffers larger than 16M bytes
4663 * fixed bug 45a: Various internal functions required to support
4664 complex special functions have been merged from CMU CL sources.
4665 (When I was first setting up SBCL, I misunderstood a compile-time
4666 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4667 * improved support for type intersection and union, fixing bug 12
4668 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4669 more obscure bugs as well
4670 * some steps toward byte-compiling non-performance-critical
4671 parts of the system, courtesy of patches from Martin Atzmueller
4672 * Christophe Rhodes has made some debian packages of sbcl at
4673 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4674 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4675 stable, but are nonetheless usable. When he's ready, I'd be happy
4676 to add them to the SourceForge "File Releases" section. (And if
4677 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4678 * new fasl file format version number (because of changes in
4679 internal representation of (OR ..) types to accommodate the new
4680 support for (AND ..) types, among other things)
4682 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4683 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4685 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4687 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4688 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4689 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4690 * DESCRIBE now works on structure objects again.
4691 * Most function call argument type mismatches are now handled as
4692 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4693 know whether the function will be redefined before the call is
4694 executed. (The compiler could flag local calls with full WARNINGs,
4695 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4696 it doesn't keep track of enough information to know whether calls
4697 are local in this sense.)
4698 * Compiler output is now more verbose, with messages truncated
4699 later than before. (There should be some supported way for users
4700 to override the default verbosity, but I haven't decided how to
4701 provide it yet, so this behavior is still controlled by the internal
4702 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4703 src/compiler/ir1util.lisp.)
4704 * Fasl file format version numbers have increased again, because
4705 support for the Gray streams extension changes the layout of the
4706 system's STREAM objects.
4707 * The Gray subclassable streams extension now works, thanks to a
4708 patch from Martin Atzmueller.
4709 * The full LOAD-FOREIGN extension (not just the primitive
4710 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4711 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4712 but like most other programs, it defaults to copying the Unix
4713 environment from the original process instead of starting the
4714 new process in an empty environment.
4715 * Extensions which manipulate the Unix environment now support
4716 an :ENVIRONMENT keyword option which doesn't smash case or
4717 do other bad things. The CMU-CL-style :ENV option is retained
4718 for porting convenience.
4719 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4720 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4722 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4724 * A patch from Martin Atzmueller seems to have solved the SIGINT
4725 problem, and as far as we know, signal-handling now works cleanly.
4726 (If you find any new bugs, please report them!)
4727 * The system no longer defaults Lisp source file names to types
4728 ".l", ".cl", or ".lsp", but only to ".lisp".
4729 * The compiler no longer uses special default file extensions for
4730 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4731 seems to expect a single default extension for all compiled code,
4732 and there's no compelling reason to try to stretch the standard
4733 to allow two different extensions.) Instead, byte-compiled files
4734 default to the same extension as native-compiled files.
4735 * Fasl file format version numbers have increased again, because
4736 a rearrangement of internal implementation packages made some
4737 dumped symbols in old fasl files unreadable in new cores.
4738 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4739 many fewer weird special cases.
4740 * Bug #17 (differing COMPILE-FILE behavior between logical and
4741 physical pathnames) has been fixed, and some related misbehavior too,
4742 thanks to a patch from Martin Atzmueller.
4743 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4744 by Tim Moore, ported to SBCL by Martin Atzmueller.
4745 * Martin Atzmueller fixed several filesystem-related problems,
4746 including bug #36, in part by porting CMU CL patches, which were
4747 written in part by Paul Werkowski.
4748 * More compiler warnings in src/runtime/ are gone, thanks to
4749 more patches from Martin Atzmueller.
4750 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4753 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4755 * DESCRIBE now works on CONDITION objects.
4756 * The debugger now handles errors which arise when trying to print
4757 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4759 * The build system now uses an additional file, customize-target-features.lisp,
4760 to allow local modifications to the target *FEATURES* list. (The point of
4761 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4762 debugging features enabled, without having to worry about propagating it
4763 into everyone's system when I do a "cvs update".) When no
4764 customize-target-features.lisp file exists, the target *FEATURES* list
4765 should be constructed the same way as before.
4766 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4767 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4768 warn about behavior which is undefined under the ANSI spec. Note: This
4769 is specified by ANSI, but it's not very popular with programmers.
4770 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4771 macro in the SBCL sources for an example of a workaround which you
4772 might use to make portable ANSI-standard code which does what you want.
4773 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4774 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4775 when it's used as a non-toplevel form. (This is required in order
4776 to implement the DEFCONSTANT-EQX macro.)
4777 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4778 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4779 funny things, due to bugs in the implementation of EVAL-WHEN
4780 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4781 non-toplevel DEFCONSTANTs are uncommon.)
4782 * The core file version number and fasl file version number have been
4783 incremented, because the old noncompliant DEFCONSTANT behavior involved
4784 calling functions which no longer exist, and because I also took the
4785 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4786 * fixed bug 1 (error handling before read-eval-print loop starts), and
4787 redid debugger restarts and related debugger commands somewhat while
4789 ** The QUIT debugger command is gone, since it did something
4790 rather different than the SB-EXT:QUIT command, and since it never
4791 worked properly outside the main toplevel read/eval/print loop.
4792 Invoking the new TOPLEVEL restart provides the same functionality.
4793 ** The GO debugger command is also gone, since you can just invoke
4794 the CONTINUE restart directly instead.
4795 ** The TOP debugger command is also gone, since it's redundant with the
4796 FRAME 0 command, and since it interfered with abbreviations for the
4798 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4800 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4801 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4802 some porting work by Martin Atzmueller)
4803 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4804 with a boatload of patches which he ported to SBCL. Now that those
4806 ** The system tries to make sure that its low-priority messages
4807 are prefixed by semicolons, to help people who like to use
4808 syntax highlighting in their ILISP buffer. (This patch
4809 was originally due to Raymond Toy.)
4810 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4811 patches originally written by Raymond Toy.
4812 ** The compiler understands coercion between single-value and
4813 multiple-VALUES type expressions better, getting rid of some very
4814 weird behavior, thanks to patches originally by Robert MacLachlan
4815 and Douglas Crosher.
4816 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4817 lambda lists, thanks to a patch originally by Pierre Mai.
4818 ** The system no longer bogusly warns about "abbreviated type
4820 ** The compiler gets less confused by inlining and RETURN-FROM,
4821 thanks to some patches originally by Tim Moore.
4822 ** The system no longer hangs when dumping circular lists to fasl
4823 files, thanks to a patch originally from Douglas Crosher.
4824 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4825 undefined function error.
4826 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4827 in structure slot initforms) for now, documented workaround instead:-|
4828 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4829 * fixed bug 5: added stubs for various Gray stream functions called
4830 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4831 installed, at least appropriate type errors are generated
4832 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4833 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4834 consistently in DEFMETHOD forms.
4835 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4836 it doesn't seem to affect SBCL after all
4837 * The C runtime system now builds with better optimization and many
4838 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4840 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4842 * The system is now under CVS at SourceForge (instead of the
4843 CVS repository on my home machine).
4844 * The new signal handling code has been tweaked to treat register
4845 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4846 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4847 downstream, e.g. in debug-int.lisp, has implicit dependencies
4848 on the unsignedness of integer representation of machine words,
4849 and that caused the system to bomb out with infinite regress
4850 when trying to recover from type errors involving signed values,
4851 e.g. (BUTLAST '(1 2 3) -1).)
4852 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4853 (This was one of the bugs Peter Van Eynde reported back in July.)
4854 * The system now uses code inspired by Colin Walters' O(N)
4855 implementation of MAP (from the cmucl-imp@cons.org mailing
4856 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4857 inline the MAP operation, and there is more than one
4858 sequence argument to the MAP call (so that it can't just
4859 do ETYPECASE once and for all based on the type of the
4860 single sequence argument). (The old non-inline implementation
4861 of the general M-argument sequence-of-length-N case required
4862 O(M*N*N) time when any of the sequence arguments were LISTs.)
4863 * The QUIT :UNIX-CODE keyword argument has been renamed to
4864 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4865 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4867 * Raymond Wiker's patches to port dynamic loading from Linux to
4868 FreeBSD have been added.
4869 * The BUGS file is now more nearly up to date, thanks in large part
4870 to Martin Atzmueller's review of it.
4871 * The debugger now flushes standard output streams before it begins
4872 its output ("debugger invoked" and so forth).
4873 * The core version number and fasl file version number have both
4874 been incremented, because of incompatible changes in the layout
4876 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4877 used to not be called for a saved Lisp image.)
4878 * Martin Atzmueller's version of a patch to fix a compiler crash,
4879 as posted on sbcl-devel 13 September 2000, has been installed.
4880 * Instead of installing Martin Atzmueller's patch for the
4881 compiler transform for SUBSEQ, I deleted the compiler transform,
4882 and transforms for some similar consing operations.
4883 * A bug in signal handling which kept TRACE from working on OpenBSD
4885 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4886 away by constant folding
4887 * The system now defines its address space constants in one place
4888 (in the Lisp sources), and propagates them automatically elsewhere
4889 (through GENESIS and the sbcl.h file). Therefore, patching the
4890 address map is less unnecessarily tedious and error-prone. The
4891 Lisp names of address space constants have also been systematized.
4892 * CVS tags like dollar-Header-dollar have been removed from
4893 the sources, because they have never saved me trouble and
4894 they've been source of trouble working with patches and other
4895 diff-related operations.
4896 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4897 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4899 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4901 * The system has been ported to OpenBSD.
4902 * The system now compiles with a simple "sh make.sh" on the systems
4903 that it's supported on. I.e., now you no longer need to tweak
4904 text in the target-features.lisp-expr and symlinks in src/runtime/
4905 by hand, the make.sh takes care of it for you.
4906 * The system is no longer so grossly inefficient when compiling code
4907 involving vectors implemented as general (not simple) vectors (VECTOR T),
4908 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4909 which dares to use the various sequence functions on non-simple
4910 vectors, takes less of a performance hit.
4911 * There is now a primitive type predicate VECTOR-T-P
4912 to test for the (VECTOR T) type, so that e.g.
4913 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4914 can now be compiled with some semblance of efficiency. (The old code
4915 turned the type declaration into a full call to %TYPEP at runtime!)
4916 * AREF on (VECTOR T) is still not fast, since it's still compiled
4917 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4918 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4919 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4920 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4921 without making full calls to SUBTYPEP at runtime.
4922 (Some analogous efficiency issues for non-simple vectors specialized to
4923 element types other than T, or for non-simple multidimensional arrays,
4924 have not been addressed. They could almost certainly be handled the
4925 same way if anyone is motivated to do so.)
4926 * The changes in array handling break binary compatibility, so
4927 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4928 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4929 instead of (VALUES T T).
4930 * By following the instructions that Dan Barlow posted to sbcl-devel
4931 on 2 July 2000, I was able to enable primitive dynamic object
4932 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4933 functionality is not implemented (since it calls ld to resolve
4934 library references automatically, requiring RUN-PROGRAM for its
4935 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4936 try to resolve library references) is now supported.
4937 * The system now flushes the standard output streams when it terminates,
4938 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4939 them at several other probably-convenient times, e.g. in each pass of
4940 the toplevel read-eval-print loop, and after evaluating a form given
4941 as an "--eval" command-line option. (These changes were motivated by a
4942 discussion of stream flushing issues on cmucl-imp in August 2000.)
4943 * The source transform for TYPEP of array types no longer assumes
4944 that an array whose element type is a not-yet-defined type
4945 is implemented as an array of T, but instead punts, so that the
4946 type will be interpreted at runtime.
4947 * There is now some support for cross-compiling in make.sh: each of
4948 the phases of make.sh has its own script. (This should be transparent
4949 to people doing ordinary, non-cross-compile builds.)
4950 * Since my laptop doesn't have hundreds of megabytes of memory like
4951 my desktop machine, I became more motivated to do some items on
4952 my to-do list in order to reduce the size of the system a little:
4953 ** Arrange for various needed-only-at-cold-init things to be
4954 uninterned after cold init. To support this, those things have
4955 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4956 symbols with such names are now uninterned after cold init).
4957 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4958 fasl files for cold load.
4959 ** Remove the old compiler structure pooling code (which used to
4960 be conditional on the target feature :SB-ALLOC) completely.
4961 ** Redo the representation of some data in cold init to be more compact.
4962 (I also looked into supporting byte compiled code at bootstrap time,
4963 which would probably reduce the size of the system a lot, but that
4964 looked too complicated, so I punted for now.)
4965 * The maximum signal nesting depth in the src/runtime/ support code has
4966 been reduced from 4096 to 256. (I don't know any reason for the very
4967 large old value. If the new smaller value turns out to break something,
4968 I'll probably just bump it back up.)
4969 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4971 * Many, many bugs reported by Peter Van Eynde have been added to
4972 the BUGS list; some have even been fixed.
4973 * While enabling dynamic object file loading, I tried to make the
4974 code easier to understand, renaming various functions and variables
4975 with less ambiguous names, and changing some function calling
4976 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4977 * While trying to figure out how to do the OpenBSD port, I tried to
4978 clean up some of the code in src/runtime/. In particular, I dropped
4979 support for non-POSIX signal handling, added various comments,
4980 tweaked the code to reduce the number of compilation warnings, and
4981 renamed some files to increase consistency.
4982 * To support the new automatic configuration functionality in make.sh,
4983 the source file target-features.lisp-expr has been replaced with the
4984 source file base-target-features.lisp-expr and the machine-generated
4985 file local-target-features.lisp-expr.
4986 * fixed a stupid quoting error in make.sh so that using CMU CL
4987 "lisp -batch" as cross-compilation host works again
4989 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4991 * DESCRIBE no longer tries to call itself recursively to describe
4992 bound/fbound values, so that it no longer fails on symbols which are
4993 bound to themselves (like keywords, T, and NIL).
4994 * DESCRIBE now works on generic functions.
4995 * The printer now prints less-screwed-up representations of closures
4996 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4997 * A private symbol is used instead of the :EMPTY keyword previously
4998 used to mark empty slots in hash tables. Thus
4999 (DEFVAR *HT* (MAKE-HASH-TABLE))
5000 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5001 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5002 now does what ANSI says that it should. (You can still get
5003 similar noncompliant behavior if bang on the hash table
5004 implementation with all the symbols you get back from
5005 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5006 This breaks binary compatibility, since tests for equality to
5007 :EMPTY are wired into things like the macroexpansion of
5008 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5010 * There's now a minimal placeholder implementation for CL:STEP,
5011 as required by ANSI.
5012 * An obscure bug in the interaction of the normal compiler, the byte
5013 compiler, inlining, and structure predicates has been patched
5014 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5015 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5017 * Missing ordinary arguments in a macro call are now detected even
5018 when the macro lambda list contains &KEY or &REST.
5019 * The debugger no longer complains about encountering the top of the
5020 stack when you type "FRAME 0" to explicitly instruct it to go to
5021 the top of the stack. And it now prints the frame you request even
5022 if it's the current frame (instead of saying "You are here.").
5023 * As specified by ANSI, the system now always prints keywords
5024 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5026 * The default initial SIZE of HASH-TABLEs is now smaller.
5027 * Type information from CLOS class dispatch is now propagated
5028 into DEFMETHOD bodies, so that e.g.
5029 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5031 is now basically equivalent to
5032 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5033 (DECLARE (TYPE SINGLE-FLOAT X))
5035 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5036 operation, without having to do run-time type dispatch.
5037 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5038 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5039 * Since I don't seem to be making big file reorganizations very often
5040 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5041 is overflowing my ability to conveniently back them up), I've finally
5042 checked the system into CVS. (The CVS repository is on my home system,
5043 not at SourceForge -- putting it on SourceForge might come later.)
5044 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5045 high-level GC-NOTIFY-FOO functions send their output. (There's
5046 still very little control of where low-level verbose GC functions
5047 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5048 less than it used to -- the GC-NOTIFY-FOO functions are now under
5049 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5050 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5051 in only one place in the source code, and propagates it automatically
5052 everywhere that it's needed. Thus e.g. when I bump the version from
5053 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5054 * The C source files now include boilerplate legalese and documentation
5055 at the head of each file (just as the Lisp source files already did).
5056 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5057 to his page will be replaced with a link to his new CLiki service.
5059 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5061 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5062 * The build process now looks for GNU make under the default name "gmake",
5063 instead of "make" as it used to. If GNU make is not available as "gmake"
5064 on your system, you can change this default behavior by setting the
5065 GNUMAKE environment variable.
5066 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5067 can build without error under CMU CL.
5069 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5071 * There is now a partial SBCL user manual (with some new text and some
5072 text cribbed from the CMU CL manual).
5073 * The beginnings of a profiler have been added (starting with the
5074 CMU CL profiler and simplifying and cleaning up). Eventually the
5075 main interface should be through the TRACE macro, but for now,
5076 it's still accessed through vaguely CMU-CL-style functions and macros
5077 exported from the package SB-PROFILE.
5078 * Some problems left over from porting CMU CL to the new
5079 cross-compilation bootstrap process have been cleaned up:
5080 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5081 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5082 part when getting rid of the compiler *BACKEND* stuff.)
5083 ** The value of *NULL-TYPE* was screwed up, because it was
5084 being initialized before the type system knew the final
5085 definition of the 'NULL type. This screwed up several key
5086 optimizations in the compiler, causing inefficiency in all sorts
5087 of places. (I found it because I wanted to understand why
5088 GET-INTERNAL-RUN-TIME was consing.)
5089 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5090 PROCLAIM FTYPE information. Unfortunately this broke binary
5091 compatibility again, since now the forms output by DEFGENERIC
5092 to refer to functions which didn't exist in 0.6.3.
5093 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5094 can use the new (as of 0.6.3) transform for SOME into MAP into
5096 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5097 values to (INTEGER 0 1000000), so that the time code will no longer
5098 occasionally get blown up by Linux returning 1000000 microseconds
5099 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5100 its output conform to the ANSI spec. (Alas, this makes its output
5101 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5102 * A full call to MAP NIL with a single sequence argument no longer conses.
5103 * fixes to problems pointed out by Martin Atzmueller:
5104 * The manual page no longer talks about multiprocessing as though
5105 it were currently supported.
5106 * The ILISP support patches have been removed from the distribution,
5107 because as of version 5.10.1, ILISP now supports SBCL without us
5108 having to maintain patches.
5109 * added a modified version of Raymond Toy's recent CMU CL patch for
5110 EQUALP comparison of HASH-TABLE
5112 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5114 * The system still can't cross-compile itself with
5115 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5116 entails), but at least it can compile more of itself that way
5117 than it used to be able to, and various buglets which were uncovered
5118 by trying to cross-compile itself that way have now been fixed.
5119 * This release breaks binary compatibility again. This time
5120 at least I've incremented the FASL file format version to 2, so that the
5121 problem can be detected reliably instead of just causing weird errors.
5122 * various new style warnings:
5123 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5124 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5125 ** using the lexical binding of a variable named in the *FOO* style
5126 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5127 as specified by ANSI.
5128 * *RANDOM-STATE* is no longer automatically initialized from
5129 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5130 default behavior of the system is to repeat its behavior every time
5131 it's run. If you'd like to change this behavior, you can always
5132 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5133 old convention there was no comparably easy way to get the system to
5134 repeat its behavior every time it was run.
5135 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5136 FTYPE declarations has been removed, in favor of their ANSI
5137 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5138 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5139 the types of their sequence arguments can be determined at compile time.
5140 This is done through a new open code expansion for MAP which eliminates
5141 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5142 argument types can be determined at compile time.
5143 * The optimizer now transforms COERCE into an identity operation when it
5144 can prove that the coerced object is already of the correct type. (This
5145 can be a win for machine generated code, including the output of other
5146 optimization transforms, such as the MAP transform above.)
5147 * Credit information has been moved from source file headers into CREDITS.
5148 * Source file headers have been made more standard.
5149 * The CASE macro now compiles without complaining even when it has
5152 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5154 * (Note that the way that the PCL macroexpansions were rewritten
5155 to accommodate the change in DEFGENERIC below breaks binary
5156 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5157 not run under sbcl-0.6.2. Once we get out of alpha releases,
5158 i.e. hit release 1.0.0, we'll probably try to maintain binary
5159 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5160 and sbcl-1.4.4. Until then, however, it might be fairly common
5161 for maintenance releases to break binary compatibility.)
5162 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5164 * The reporting of unhandled signals has been changed to print some
5165 explanatory text as well as the report form. (Previously only
5166 the report form was printed.)
5167 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5168 it defines, so that the compiler no longer issues undefined function
5169 warnings for compiled-but-not-yet-loaded generic functions.
5170 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5171 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5172 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5173 section of the ANSI spec are supported.
5174 * The "" nickname for the "KEYWORD" package has been removed.
5175 The reader still handles symbol tokens which begin with a package marker
5176 as keywords, but it doesn't expose its mechanism for doing so in the
5177 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5178 * The system now issues STYLE-WARNINGs for contradictory TYPE
5179 proclamations. (Warnings for contradictory FTYPE proclamations would
5180 be nice too, but those can't be done usefully unless the type system
5181 is made smarter about FUNCTION types.)
5182 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5183 systematized, so that "*target-*.lisp is supposed to exist only on the
5184 target and imply that there's a related file which exists on the
5185 host, and *host-*.lisp is supposed to exist only on the host and imply
5186 that there's a related file which exists on the target. This involves a
5187 lot of renaming. Hopefully the acute confusion caused by the renaming
5188 will be justified by the reduction in chronic confusion..
5189 ** runtime-type.lisp -> early-target-type.lisp
5190 ** target-type.lisp -> late-target-type.lisp
5191 ** early-host-format.lisp -> early-format.lisp
5192 ** late-host-format.lisp -> late-format.lisp
5193 ** host-error.lisp -> misc-error.lisp
5194 ** early-error.lisp -> early-target-error.lisp
5195 ** late-error.lisp -> late-target-error.lisp
5196 ** host-defboot.lisp -> early-defboot.lisp
5197 ** code/misc.lisp -> code/target-misc.lisp
5198 ** code/host-misc.lisp -> code/misc.lisp
5199 ** code/numbers.lisp -> code/target-numbers.lisp
5200 ** code/early-numbers.lisp -> numbers.lisp
5201 ** early-host-type.lisp -> early-type.lisp
5202 ** late-host-type.lisp -> late-type.lisp
5203 ** host-typep.lisp -> typep.lisp
5204 ** load.lisp -> target-load.lisp
5205 ** host-load.lisp -> load.lisp
5206 ** host-disassem.lisp -> disassem.lisp
5207 ** host-insts.lisp -> insts.lisp
5208 ** byte-comp.lisp -> target-byte-comp.lisp
5209 ** host-byte-comp.lisp -> byte-comp.lisp
5210 ** host-signal.lisp -> signal.lisp
5211 ** host-defstruct.lisp -> defstruct.lisp
5212 ** late-target-type.lisp -> deftypes-for-target.lisp
5213 Furthermore, several other previously target-only files foo.lisp (e.g.
5214 hash-table.lisp and random.lisp) have been split into a target-and-host
5215 foo.lisp file and a target-only target-foo.lisp file, with their key type
5216 definitions in the target-and-host part, so that the cross-compiler will
5217 know more about target types.
5218 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5219 gone away. In their place are various *BACKEND-FOO* variables
5220 corresponding to the slots of the old structure.
5221 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5222 into the target SBCL has been fixed.
5223 * The chill.lisp system for loading cold code into a running SBCL
5225 * Support for the CMU CL "scavenger hook" extension has been removed.
5226 (It was undocumented and unused in the CMU CL sources that SBCL was
5227 derived from, and stale in sbcl-0.6.1.)
5228 * Various errors in the cross-compiler type system were detected
5229 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5230 (enabling various consistency checks). Many of them were fixed,
5231 but some hard problems remain, so the compiler is back to
5232 running without *TYPE-SYSTEM-INITIALIZED* for now.
5233 * As part of the cross-compiler type system cleanup, I implemented
5234 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5235 * I have started adding UNCROSS calls throughout the type system
5236 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5237 on cross-compiler input files will be able to go away, and various
5239 * CONSTANTP now returns true for quoted forms (as explicitly required
5242 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5244 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5245 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5246 (MAKE-LIST -1). In the longer term, it ought to become true
5247 that declarations are assertions even at SAFETY 1. For now, it's not
5248 quite true even at SAFETY 3, but it's at least more nearly true..
5249 (Note that this change seems to increases the size of the system by
5250 O(5%) and to decrease the speed of the compiler by 20% or more.)
5251 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5252 for the problem of printing dozens of lines of distracting information
5253 about low-level system machinery as part of the top stack frame
5254 on entry to the debugger when an undefined function was called.
5255 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5256 is not reset to COMMON-LISP-USER.
5257 * Compilation of stuff related to dyncount.lisp has been made conditional
5258 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5259 smaller. The various dyncount-related symbols have been moved into
5260 a new "SB-DYNCOUNT" package.
5261 * tty-inspect.lisp has been renamed to inspect.lisp.
5262 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5263 feature has gone away. (When we eventually port to other flavors of
5264 libc and/or Unix, we'll try to make the differences between flavors
5265 invisible at the user level.)
5266 * Various other *FEATURES* tags, and/or their associated conditionals,
5267 have been removed if obsolescent, or given better documentation, or
5268 sometimes given more-mnemonic names.
5270 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5272 * tidied up "make.sh" script
5273 * tidied up system directory structure
5274 * better "clean.sh" behavior
5275 * added doc/FOR-CMUCL-DEVELOPERS
5276 * many many small tweaks to output format, e.g. removing possibly-confusing
5277 trailing #\. character in DESCRIBE-INSTANCE
5278 * (EQUALP #\A 'A) no longer signals an error.
5279 * new hashing code, including EQUALP hashing
5280 * tidied up Lisp initialization and toplevel
5281 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5282 * command line argument processing
5283 * added POSIX-GETENV function to deal with Unix-ish environment variables
5284 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5285 terminating SBCL on EOF
5286 * non-verbose GC by default
5287 * There is no more "sbcl" shell script; the sbcl file is now the C
5288 runtime executable (just like CMU CL).
5289 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5291 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5292 symbol and package information as Lisp native symbol and package objects
5293 instead of strings naming symbols and strings naming packages. This way,
5294 whenever packages are renamed (as in warm init), debug information is
5295 transformed along with everything else.
5296 * tweaked the optimization policy declarations which control the building
5297 of SBCL itself. Now, among other things, the system no longer saves
5298 source location debugging information. (This helps two problems at once
5299 by reducing SBCL size and by keeping SBCL from trying to look for its
5300 sources -- which may not exist -- when reporting errors.)
5301 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5302 debugging and testing purposes
5303 * cleaned up printing, making the printer call PRINT-OBJECT for
5304 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5305 methods, giving nearly-ANSI behavior
5306 * converted almost all special variables to use *FOO* naming convention
5307 * deleted PARSE-TIME functionality, since it can be done portably
5308 * moved some files out of cold init into warm init
5309 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5311 * regularized formatting of source files
5312 * added an install.sh script
5313 * fixed ridiculous memory usage of cross-compiler by making
5314 compiler/alloc.lisp not try to do pooling unless it can hook
5315 itself into the GC of the cross-compilation host. Now the system
5316 builds nicely on my old laptop.
5317 * added :SB-ALLOC in target-features.lisp-expr
5318 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5319 was not implemented)
5320 * re-did condition handling and note reporting in the compiler. Notes
5321 are no longer handled by signalling conditions. Style warnings
5322 and warnings are handled more correctly and reported in such a way
5323 that it's easy to find one or the other in your output (so that you
5324 can e.g. figure out which of many problems caused COMPILE-FILE to
5326 * changed the severity of several compiler warnings from full WARNING
5327 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5328 compiler note reporting so that it doesn't use the condition system
5329 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5330 COMPILE-FILE command)
5331 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5332 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5333 no longer supported, since their implementation was deeply intertwingled
5334 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5335 * removed bogus "support" for compiler macros named (SETF FOO), and
5336 removed the compiler macro for SETF INFO (but only after making a fool
5337 of myself on the cmucl-imp mailing list by posting a bogus patch for
5338 DEFINE-COMPILER-MACRO..)
5339 * Compiled files containing forms which have side effects on the Lisp
5340 reader (such as DEFPACKAGE forms) are now handled more correctly.
5341 (Compiler queuing of top level lambdas has been suppressed by setting
5342 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5343 * deleted various currently-unused source files, e.g. gengc.lisp. They
5344 may be added back at some point e.g. when porting to other architectures,
5345 but until they are it's distracting to distribute them and to try to
5347 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5348 there were so many of them they're just distractions, and UNCROSS is
5349 known to be able to handle the current sources
5350 * moved PROFILE functionality into TRACE, so that it will be clear
5351 how the wrapping and unwrapping of functions when you profile them
5352 interacts with the wrapping and unwrapping of functions when you
5353 trace them. (Actually, the functionality isn't there yet, but at least
5354 the interface specification is there. Hopefully, the functionality will
5355 arrive with some future maintenance release.)
5356 * removed host-oops.lisp
5357 * changed signature of QUIT function to allow UNIX-CODE argument
5358 * fixed READ-SEQUENCE bug
5359 * tweaked verbose GC output so that it looks more like the progress
5360 output that ANSI specifies for functions like LOAD
5361 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5362 * added <http://sbcl.sourceforge.com> to the banner information printed by