1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.31
3 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
4 correctly when starting from an executable core without saved runtime
5 options (reported by Faré Rideau, thanks to Zach Beane)
6 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
7 an optimization note instead. (reported by Martin Cracauer)
8 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
10 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
11 * improvement: stack allocation is should now be possible in all nested
12 inlining cases: failure to stack allocate when equivalent code is manually
13 open coded is now considered a bug.
14 * improvements related to Unicode:
15 ** the Unicode character database has been upgraded to the
16 Unicode 5.1 standard, giving names and properties to a number of new
17 characters, and providing a few extra characters with case
19 ** the system now recognizes and produces names for Unicode Hangul
21 ** the EBCDIC-US external-format is now supported for octet operations
22 (as well as for stream operations).
23 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
24 be used to output toplevel compile-time effects into a separate .CFASL
26 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
27 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
29 * optimization: TRUNCATE on known single- and double-floats is upto 25%
31 * optimization: division of floating point numbers by constants uses
32 multiplication by reciprocal when an exact reciprocal exists.
33 * optimization: multiplication of single- and double-floats floats by
34 constant two has been optimized.
35 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
36 sufficient type information is available. (thanks to Leslie Polzer)
37 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
38 known structure objects are as efficient as defstruct generated accessors.
39 * optimization: unused vector creation can now be optimized away.
40 * improvement: ASDF systems can now depends on SB-INTROSPECT.
41 * improvement: a STYLE-WARNING is signalled when a generic function
42 clobbers an earlier FTYPE proclamation.
43 * improvement: the compiler is able to track the effective type of
44 generic function across method addition and removal even in the
45 absence of an explicit DEFGENERIC.
46 * improvement: DESCRIBE now reports on symbols naming undefined
47 but assumed or declared function as well.
48 * improvement: recompilation of systems using SB-GROVEL now works
49 (thanks to Leslie Polzer)
50 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
51 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
53 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
54 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
55 well as user defined declaration names.
56 ** VARIABLE-INFORMATION is now aware of alien variables.
57 * improvement: improved address space layout on OpenBSD (thanks to Josh
59 * improvement: pretty-printing of various Lisp forms has been improved
60 (thanks to Tobias Rittweiler)
61 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
62 unused were deleted in safe code. (reported by John Fremlin)
63 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
65 * bug fix: some out-of-line array predicates were missing (reported by
67 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
69 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
70 (thanks to Larry D'Anna)
71 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
72 as well. (reported by Josh Elsasser)
73 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
74 leading to possible attempts to delete the same file twice. See docstring
75 on DELETE-FILE for details. (reported by John Fremlin)
76 * bug fix: DELETE-FILE once again deletes the file named by the pathname
77 designator argument, rather than its truename. (reported by Luis
79 * bug fix: the low-level debugger had 32-bit assumptions and was missing
80 information about some array types. (thanks to Luis Oliveira)
81 * bug fix: moderately complex combinations of inline expansions could
82 be miscompiled if the result was declared to be dynamic extent.
83 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
84 form (+ <variable> <integer>) were miscompiled under certain
86 * bug fix: in some cases no compiler note about failure to stack allocate
87 was emitted, even if the objects were in fact heap allocated.
88 * bug fix: minor violation of "otherwise inaccessible" rule for stack
89 allocation could cause objects users might reasonably expect to
90 be heap allocated to be stack allocated.
91 * bug fix: DESCRIBE signalled an error for generic functions under
92 certain circumstances. (thanks to Leslie Polzer)
93 * bug fix: Fixed spelling of an error message.
95 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
96 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
97 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
98 of SB-THREAD:THREAD-ERROR-THREAD.
99 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
100 * new feature: docstrings for local and anonymous functions are no longer
101 discarded. (thanks to Leslie Polzer)
102 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
103 values in other threads.
104 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
105 about object allocation.
106 * optimization: division of a real float by a complex float is implemented
107 with a specialised code sequence.
108 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
109 keywords is an order of magnitude faster.
110 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
111 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
112 methods, and similarly for non-standard metaclass classes as long as there
113 are no methods additional on MAKE-INSTANCE.
114 * optimization: more efficient type-checks for FIXNUMs when the value
115 is known to be a signed word on x86 and x86-64.
116 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
117 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
119 * optimization: compiler is smarter about delegating argument type checks to
121 * optimization: several character functions are now compiled somewhat more
122 efficiently. (reported by Lynn Quam)
123 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
124 * improvement: less unsafe constant folding in floating point arithmetic,
125 especially for mixed complex/real -float operations.
126 * optimization: constant double and single floats are stored in native
127 unboxed format on x86[-64].
128 * optimization: smarter code for arithmetic operations with constant floats,
129 complex floats, or integers on x86[-64].
130 * optimization: smarter code for conjugate/multiplication of float complexes
131 and abs/negate of floats on x86-64.
132 * optimization: more efficient complex float and real float operations on
134 * improvement: complex float division is slightly more stable.
135 * improvement: DESCRIBE output has been reworked to be easier to read and
136 contains more pertinent information.
137 * improvement: failure to provide requested stack allocation compiler notes
138 provided in all cases (requested stack allocation not happening without a
139 note being issued is now considered a bug.)
140 * bug fix: SB-POSIX exports the documented types and functions
141 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
142 types. (reported by "abhi")
143 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
144 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
145 (thanks to Paul Khuong)
146 * bug fix: looping around HANDLER-CASE could silently consume stack space
147 on each iteration. (reported by "foobar")
148 * bug fix: better error signalling when calls to functions seeking elements
149 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
150 (reported by Tobias Rittweiler)
151 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
152 directory components now works as it used to. (various prolems reported by
153 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
154 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
155 (reported by Elliot Slaughter, thanks to Stas Boukarev)
156 * bug fix: bogus undefined variable warnings from fopcompiled references to
157 global variables. (thanks to Lars Rune Nøstdal)
158 * bug fix: foreign function names should now appear in backtraces on
159 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
160 * bug fix: SETF compiler macro documentation strings are not discarded
162 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
163 (thanks to Alex Plotnick)
164 * bug fix: SLEEP accepts large integer arguments, truncating them to
165 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
166 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
167 * bug fix: compiler notes for expensive slot type checks could be emitted
168 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
170 changes in sbcl-1.0.29 relative to 1.0.28:
171 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
172 https://bugs.launchpad.net/sbcl
173 Bugs can be reported directly there, or by sending email to
174 sbcl-bugs@lists.sourceforge.net
175 (no subscription required.)
176 * minor incompatible change: under weak type checking policy integer
177 types are weakened less aggressively.
178 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
179 allowed to return, which causes SBCL to quit with exit status 0. Previously
180 if the function returned with a small integer return value, that value
181 was accidentally reused as the exit status.
182 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
183 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
184 :HASH-FUNCTION argument. Refer to user manual for details.
185 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
187 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
188 microseconds since the Unix epoch on all platforms.
189 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
190 allows the compiler to safely elide boundedness checks for special
192 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
193 the symbol, prohibits both lexical and dynamic binding. This is mainly an
194 efficiency measure for threaded platforms, but also valueable in
196 * new feature: UNC pathnames are now understood by the system on Windows.
197 * optimization: the compiler uses a specialized version of FILL when the
198 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
200 * optimization: accesses to potentially non-simple arrays where element type
201 is known are 50% faster.
202 * optimization: compiler now generates faster array typechecking code.
203 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
205 * optimization: multidimensional array accesses in the absence of type
206 information regarding array rank are approximately 10% faster due to
207 open coding of ARRAY-RANK.
208 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
209 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
211 * optimization: result of call to VECTOR can now be stack allocated.
212 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
213 as long as the resulting array is one-dimensional and has a known
214 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
215 length of the list matches the known length of the vector does not
216 allocate the list as an intermediate step. Ditto for VECTOR and simple
218 * optimization: MAKE-ARRAY can now stack allocate in the presence of
219 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
220 known element type, and is known to be simple and one dimensional.
221 * improvement: SBCL now emits a compiler note where stack allocation was
222 requested but could not be provided (not in all cases, unfortunately)
223 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
224 * improvement: pretty-printing loop has been implemented properly. (thanks
225 to Tobias Rittweiler)
226 * documentation: CLOS slot typechecing policy has been documented.
227 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
228 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
229 pointer, leading to memory faults. (thanks to Bart Botta)
230 * bug fix: better floating point exception handling on x86/OpenBSD.
231 (thanks to Josh Elsasser)
232 * bug fix: exit status from QUIT when called under --script was lost
233 (reported by Hubert Kauker)
234 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
235 same implementation of FILL to initialize the array, even if a more
236 efficient one was available (reported by Stas Boukarev, thanks to
238 * bug fix: potential miscompilation of array stack allocation on x86 and
239 x86-64. (reported by Time Tossavainen)
240 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
241 result in their subforms being treated as top level forms. (reported by
243 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
244 than a machine register could leave garbage in the high bits of the
245 result register (bug 316325).
246 * bug fix: disable address space randomization Linux/x86-64 as well,
247 not just x86-64. (reported by Ken Olum)
248 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
249 generate incorrect code.
250 * bug fix: #201; type inference for CONS and ARRAY types could derive
251 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
252 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
253 could not be assigned to or bound with PROGV. (reported by Lorenz
255 * bug fix: the value of CL:- in the inspector was the previous expression
256 evaluated rather than the expression being evaluated.
257 * bug fix: constants can no longer be locally declared special.
258 * bug fix: signals delivered to threads started from foreign land (read:
259 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
260 thread by blocking all signals and resignalling.
261 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
262 from :INITFORM, if any.
264 changes in sbcl-1.0.28 relative to 1.0.27:
265 * a number of bugs in cross-compilation have been fixed, with the ultimate
266 result that building under (at least) clisp should be much more reliable.
267 * minor incompatible changes: echo-streams now propagate unread-char to the
268 underlying input stream, and no longer permit unreading more than one
270 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
271 frames, allowing for instance more reliable backtraces.
272 * improvement: the debugger REPL can now reference lexical variables
273 by name directly for code compiled with (DEBUG 3).
274 * improvement: errors from malformed declarations now have better source
275 paths associated with them. (thanks to Tobias Rittweiler)
276 * optimization: faster local calls on x86/x86-64
277 * bug fix: some error messages for out-of-bound array indexes confused the
278 index and the bound. (thanks to Stas Boukarev)
279 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
281 * bug fix: running regressions tests in shells without OSTYPE set now works.
282 (reported by Harald Hanche-Olsen)
283 * bug fix: more robust static space exhaustion signalling from
284 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
285 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
286 docstring away instead of storing it under names such as (LAMBDA (X)).
287 (reported by Leslie Polzer)
288 * bug fix: timers could go off in the wrong order, be delayed indefinitely
289 (thanks to Ole Arndt for the patch)
290 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
291 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
292 potentially-invalid effective methods in its cache.
293 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
294 instances as well (thanks to Paul Khuong)
295 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
296 SB-POSIX:WAITPID and their C equivalents.
297 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
299 changes in sbcl-1.0.27 relative to 1.0.26:
300 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
301 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
302 * improvement: the system either recovers from stack exhaustion or dies
303 properly as opposed to leaving the user uncertain of whether the handler
304 trampled on some random memory next to the stack or having to rely on
305 --lose-on-corruption (which is still a good idea to use in production
306 because stack exhaustion can happen in signal handlers which will likely
308 * bug fix: fix gc related interrupt handling bug on ppc (regression from
309 1.0.25.37, reported by Harald Hanche-Olsen)
310 * bug fix: work around signal delivery bug in darwin (regression from
311 1.0.25.44, reported by Sidney Markowitz)
312 * bug fix: fix ERROR leaking memory (reported by David Thompson)
314 changes in sbcl-1.0.26 relative to 1.0.25:
315 * incompatible change: an interruption (be it a function passed to
316 INTERRUPT-THREAD or a timer function) runs in an environment where
317 interrupts can be enabled. The interruption can use
318 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
319 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
320 potentially running out of stack. Keep in mind that in the absence
321 of WITHOUT-INTERRUPTS some potentially blocking operation such as
322 acquiring a lock can enable interrupts.
323 * incompatible change: GC-OFF and GC-ON are removed, as they were
324 always unsafe. Use WITHOUT-GCING instead.
325 * new feature: runtime option --disable-ldb
326 * new feature: runtime option --lose-on-corruption to die at the
327 slightest hint of possibly non-recoverable errors: running out of
328 memory, stack, alien stack, binding stack, encountering a memory
329 fault, etc. In the absence of --lose-on-corruption a warning is
331 * enhancement: detect binding stack exhaustion
332 * enhancement: detect alien stack exhaustion on x86/x86-64
333 * improvement: generally more stable and reliable interrupt handling
334 * improvement: there is a per thread interruption queue,
335 interruptions are executed in order of arrival
336 * improvement: a repeating timer reschedules itself when the it has
337 finished, but expiration times are spaced equally. If an
338 expiration time is in the past it will trigger after a short grace
339 period that may give a chance to other things to run.
340 * optimization: slightly faster gc on multithreaded builds
341 * optimization: faster WITHOUT-GCING
342 * bug fix: when JOIN-THREAD signals an error, do it when not holding
343 important locks so that the debugger/handler doesn't produce
344 recursive errors or deadlock.
345 * bug fix: real-time signals are not used anymore, so no more
346 hanging when the system wide real-time signal queue gets full.
347 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
349 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
350 * bug fix: fix random memory faults related to interrupts on alpha
351 * bug fix: fix random memory faults related to interrupts on sparc
352 * bug fix: fix deadlocks related to starting threads
353 * bug fix: fix deadlines on locks on futex platforms
354 * bug fix: restore errno in signal handlers
355 * bug fix: fix deadlocks related to hash tables
356 * bug fix: fix deadlocks in pcl
358 changes in sbcl-1.0.25 relative to 1.0.24:
359 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
360 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
361 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
362 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
363 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
364 better name and does not return values so stale on multiprocessor systems.
365 Also, HOLDING-MUTEX-P was added for about the only sane usage of
367 * improvement: unithread builds keep track of MUTEX-VALUE.
368 * improvement: reading from a TWO-WAY-STREAM does not touch the output
369 stream anymore making it thread safe to have a concurrent reader and
370 a writer, for instance, in a pipe.
371 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
372 arguments, making compiler-macros for SETF-functions able to inspect
373 their constant arguments.
374 * improvement: COMPILE-FILE reports times with millisecond accuracy
375 (thanks to Luis Oliveira)
376 * optimization: CHAR-CODE type derivation has been improved, making
377 TYPEP elimination on subtypes of CHARACTER work better. (reported
378 by Tobias Rittweiler, patch by Paul Khuong)
379 * bug fix: setting alien structure fields of type struct by value now
380 computes the right offset for the memory copy.
381 * bug fix: compilation problem involving inlined calls to aliens with
382 result type VOID. (reported by Ken Olum)
383 * bug fix: #235a; sequential inline expasion in different policies no
384 longer reuses the functional from the previous expansion site.
385 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
386 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
387 * bug fix: named ENUMs in multiply-referenced alien record types no longer
388 cause an implied type redefinition. Regression from 1.0.21.29.
389 * bug fix: sign-extension of small signed return values now works with C
390 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
391 * improvements to the Windows port:
392 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
393 Westfold, thanks to Rudi Schlatte)
395 changes in sbcl-1.0.24 relative to 1.0.23:
396 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
397 vector of a multidimensional SIMPLE-ARRAY.
398 * new feature: the system now signals a continuable error if standard
399 readtable modification is attempted. (thanks to Tobias Rittweiler)
400 * new feature: DIRECTORY has been extended with a non-standard keyword
401 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
402 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
403 has been robustified and documented better. (thanks to Robert Goldman)
404 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
405 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
406 * tradeoff: constant FORMAT control strings are now compiled unless
407 SPACE > SPEED (previously only when SPEED > SPACE.)
408 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
410 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
412 * bug fix: lexical type declarations are now correctly reported by
413 SB-CLTL2. (reported by Larry D'Anna)
414 * bug fix: STRING-TO-OCTETS did not handle :START properly when
415 using UTF-8 as external format. (thanks to Luis Oliveira)
416 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
417 are signalled correctly. (thanks to Stas Boukarev)
418 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
419 designator. (thanks to Tobias Rittweiler)
420 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
421 designator, and returns T instead of the function. (thanks to
423 * bug fix: direct superclasses of STANDARD-CLASS and
424 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
425 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
426 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
427 when no class with the named slot yet exists no longer causes a
428 compile-time style-warning.
429 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
430 in safe code. (reported by Didier Verna)
431 * bug fix: #430; nested structure constructors can stack allocate.
432 * bug fix: on some 64-bit platforms dynamic space size was truncated
433 to #xffff0000 bytes. (reported by Benjamin Lambert)
434 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
435 REPL unusable. (reported by Daniel Herring)
436 * bug fix: return values of READ-SEQUENCE did not take :START into
437 account on file streams, regressions since 1.0.12.22. (reported by
438 Thomas Russ, patch by Paul Khuong)
439 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
440 method specializer used to confuse permuation vector optimization.
441 * bug fix: system inserted bogus implicit type declarations for local
442 special variables in DEFMETHOD bodies.
443 * bug fix: #354; duplicated frames in backtraces due to
444 non-tail-call-optimized XEPs to functions with return type NIL
446 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
447 initializes structure object slots according to DEFSTRUCT initforms,
448 and DEFSTRUCT forms :INCLUDEind structure classes defined using
449 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
450 (reported by Bruno Haible and Stephen Wilson)
451 * bug fix: #395; fill-pointer output streams used now support
452 element-type BASE-CHAR as well.
453 * bug fix: compiler error when attempting to derive return value of
454 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
456 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
458 * bug fix: Mac OS X binaries should now be portable between Leopard
461 changes in sbcl-1.0.23 relative to 1.0.22:
462 * enhancement: when disassembling method functions, disassembly
463 for the associated fast function is also produced.
464 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
466 * optimization: printing with *PRINT-PRETTY* true is now more
467 efficient as long as the object being printed doesn't require
468 special handling by the pretty printer.
469 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
470 now interact correctly with type declarations.
471 * partial bug fix: PCL detects infinite recursion during wrapper
472 validation. (thanks to Attila Lendvai)
473 * bug fix: #426; nested function calls are inlined properly.
474 Previously if FOO was an inline function, in calls of the form
475 (FOO (FOO ...)) the outer call was not inlined.
476 * bug fix: long long arguments passed in registers to alien
477 functions on PowerPC Linux and NetBSD are now handled correctly
478 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
480 changes in sbcl-1.0.22 relative to 1.0.21:
481 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
482 for the shared object in the current directory, but passes the native
483 namestring of the designated pathname to the operation system's shared
484 object loading function as-it.
485 * minor incompatible change: --disable-debugger toplevel option now takes
486 effect before processing of initialization files and --eval or --load
488 * new feature: new commandline argument: --script, which supports
489 shebang lines. See documentation for details. (based on work by
491 * new feature: SAVE-LISP-AND-DIE can save current values of
492 --dynamic-space-size and --control-stack-size in the executable core,
493 causing it to skip normal runtime option processing. See documentation
494 for details. (thanks to Zach Beane)
495 * enhancement: inoccous calls to EVAL or generic functions dispatching
496 on subclasses of eg. STREAM no longer cause compiler notes to appear.
497 * enhancement: the system no longer resignals errors from --load and
498 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
499 associated with the original error to be lost. (thanks to Ariel
501 * enhancement: :DONT-SAVE keyword argument has been added to
502 LOAD-SHARED-OBJECT for controlling interaction with
503 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
504 the effects of an earlier LOAD-SHARED-OBJECT call.
505 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
506 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
507 provided. (reported by Cedric St-Jean)
508 * bug fix: circularity handling in the reader did not treat raw
509 structure slots correctly. (reported by Cedric St-Jean)
510 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
511 file descriptors when there were none.
512 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
513 was broken. (reporteed by Willem Broekema)
514 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
515 pathnames without a directory.
516 * bug fix: COMPILE-FILE did not warn about undefined variable
517 references at toplevel, and LOAD of the resulting fasl did
519 * bug fix: functions with non-required arguments used to end up with
520 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
521 * bug fix: redefining a function with non-required arguments didn't
522 update the system's knowledge about its call signature properly.
523 * bug fix: fixed #431; incompatible alien record type redefinitions
524 are detected and handled. (reported by Neil Haven)
525 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
526 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
528 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
529 after alien stack frames.
530 * bug fix: strings passed to mk{s,d}temp lacked null termination
532 changes in sbcl-1.0.21 relative to 1.0.20:
533 * new feature: the compiler is able to track the effective type of a
534 generic function across method addition and removal.
535 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
536 appropriately typed structure slots without locking.
537 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
538 information like those gathered by TIME using a programming-friendly
540 * new feature: TIME reports time taken even if the form performs a
541 non-local transfer of control.
542 * enhancement: reduced conservativism on GENCGC platforms: on
543 average 45% less pages pinned (measured from SBCL self build).
544 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
545 mutate constant symbols or violate declaimed type of the symbol.
546 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
547 sleeping on the semaphore in heavily contested semaphores.
548 * bug fix: semaphores and condition variables were not interrupt
550 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
551 owned by other threads anymore.
552 * bug fix: FIND on lists called KEY outside the specified
553 subsequence. (reported by budden)
554 * bug fix: LOG doesn't use single-float intermediate results when
555 given mixed integer and double-float arguments, leading to better
556 precision. (reported by Bob Felts)
557 * bug fix: LOG with base zero returned values of inconsistent type.
559 changes in sbcl-1.0.20 relative to 1.0.19:
560 * minor incompatible change: OPTIMIZE qualities
561 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
562 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
563 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
564 * documentation: some slot access efficiency guidelines have been
565 added to the user manual.
566 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
567 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
568 as ASSOC and MEMEBER.
569 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
570 to more efficient EQ-comparison versions more often.
571 * optimization: enhanced derivation of DOLIST iteration variable type
573 * optimization: constant folding of simple (LIST ...) forms as DOLIST
575 * optimization: runtime lookup of function definitions can be
576 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
577 * optimization: compiler is able to derive the return type of
578 (AREF (THE STRING X) Y) as being CHARACTER.
579 * optimization: CLRHASH on empty hash-tables no longer does pointless
580 work. (thanks to Alec Berryman)
581 * optimization: REPLACE deftransforms don't punt when :START1 or
583 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
584 no longer emits a code deletion note. (reported by Andrew
586 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
587 functions with an odd number of &OPTIONAL arguments, a &REST
588 argument, and one or more &KEY arguments at the call site.
589 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
590 arguments appeared at call sites as well.
591 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
592 READ-LINE &co can no longer read from them afterwards. (reported
594 * bug fix: fixed #427: unused local aliens no longer cause compiler
595 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
597 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
598 alien-stack leakage. (reported by Andy Hefner)
599 * bug fix: PROGV signals an error when an attempt to violate declared
600 type of a variable or bind a constant is made.
601 * bug fix: SET signals an error when an attempt to violate declared
602 type of a variable is made.
603 * bug fix: restart computation during the execution of a restart
604 test function no longer causes infinite recursion. (reported by
606 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
607 signals an error. (thanks to Pierre Mai)
608 * bug fix: EXPORT left symbol unexported in conflict situations.
609 (thanks to Michael Weber)
610 * bug fix: correctly handle name conflicts involving CL:NIL.
611 (thanks to Michael Weber)
612 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
613 conflicts arising from USEing package with conflicting symbols
614 correctly. (thanks to Michael Weber)
616 changes in sbcl-1.0.19 relative to 1.0.18:
617 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
618 warnings that go otherwise unhandled will be muffled if they are
619 of the type that's the value of this variable.
620 * optimization: stack allocation is slightly more efficient on x86
622 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
623 where a raw slot always is initialized using the initform whose
624 type is not know sufficiently well a compile-time are now compiled
625 correctly. (reported by John Morrison)
626 * bug fix: compiler no longer makes erronous assumptions in the
627 presence of non-foldable SATISFIES types.
628 * bug fix: stack analysis missed cleanups of dynamic-extent
629 arguments in non-let-converted calls to local functions.
630 * improvements to the Windows port:
631 ** adjusted address spaces for building on both Win32 and
632 Win64. (thanks for John Connors)
633 * fixed some bugs revealed by Paul Dietz' test suite:
634 ** interval arithmetic during type derivation used inexact integer
635 to single-float coercions.
636 ** arithmetic operations involving large integers and single
637 floats give the same results in compiled and interpreted code.
638 ** deriving the result type of COERCE no longer signals an error
639 if the derived type of the second argument is a MEMBER type
640 containing invalid type specifiers.
641 ** ADJOIN with constant NIL as second argument works correctly.
642 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
644 changes in sbcl-1.0.18 relative to 1.0.17:
645 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
646 profiles only the current thread.
647 * minor incompatible change: changes to SYMBOL-VALUE of constants
648 defined with DEFCONSTANT now signal an error.
649 * enhancement: SB-SPROF now has support for wallclock profiling,
650 and is also able to profile specific threads. REPORT output
651 has also additional sorting options.
652 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
654 * optimization: structure allocation has been improved
655 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
656 ** out of line constructors are ~10% faster.
657 ** inline constructors are ~15% faster.
658 ** inline constructors are capable of dynamic extent allocation
659 (generally on x86 and x86-64, in some cases on other platforms
661 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
663 * optimization: file compiler is now able to coalesce non-circular
664 lists, non-base strings, and bit-vectors. Additionally, constants
665 are never referenced through SYMBOL-VALUE at runtime.
666 * optimization: code defining methods on PRINT-OBJECT (and other
667 generic functions in the COMMON-LISP package) now loads faster.
668 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
670 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
671 fasl is now deleted. (reported by Attila Lendvai)
672 * bug fix: READ-LINE always returned NIL for the last line in files.
673 (reported by Yoshinori Tahara)
674 * bug fix: more accurate disassembly annotations of foreign function
675 calls. (thanks to Andy Hefner)
676 * bug fix: trimming non-simple strings and non-string string
677 designators when the there is nothing to trim works properly.
678 (thanks to James Knight)
679 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
680 (thanks to Travis Cross)
681 * fixed some bugs revealed by Paul Dietz' test suite:
682 ** NIL is a valid function name (regression at 1.0.13.38)
683 ** FILL on lists was missing its return value (regression at 1.0.12.27)
684 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
685 fill pointers properly (regression at 1.0.12.23)
686 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
687 displacement indices properly (regression at 1.0.12.23)
689 changes in sbcl-1.0.17 relative to 1.0.16:
690 * temporary regression: user code can no longer allocate closure
691 variable storage on stack, due to bug 419 without explicitly
692 requesting it. Please consult sbcl-devel for advice if you need to
693 use this feature in the meanwhile.
694 * new feature: runtime argument --control-stack-size can be used to
695 adjust thread default control stack size.
696 * enhancement: improved TIME output
697 ** all times are reported using the measured accuracy (milliseconds
698 for real and GC times, microseconds for everything else.)
699 ** processor cycle counts on x86 and x86-64.
700 ** interpreted forms are counted for both evaluator modes.
701 ** number of lambdas converted by the compiler is reported.
702 ** CPU percentage report (computed from real and total run time.)
703 ** more comprehensive run time reporting, using a condenced format
704 ** interperted form, lambda, and page fault counts are omitted
706 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
708 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
709 * optimization: two argument forms of LAST are upto ~10% faster
710 in normal SPEED policies.
711 * optimization: NCONC no longer needs to heap cons its &REST list
712 in normal SPEED policies.
713 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
715 * bug fix: UNION and NUNION work with :TEST-NOT once more,
716 regression since 1.0.9.1. (thanks to Eric Marsden)
717 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
718 since 1.0.15.36. (thanks to Paul Khuong)
719 * bug fix: LAST when always returned the whole list when given a bignum
720 as the second argument.
721 * bug fix: dynamic extent allocation of nested lists and vectors
722 could leak to otherwise accessible parts.
723 * bug fix: invalid optimization of heap-allocated alien variable
725 * bug fix: fasl header checking is less vulnerable to different
726 platform word lengths.
727 * bug fix: more correct assembler syntax for GNU binutils
728 2.18.50.0.4 support. (thanks to Marijn Schouten)
729 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
731 * bug fix: the fopcompiler can handle LOCALLY forms (with no
732 declarations) successfully. (reported by Attila Lendvai)
734 changes in sbcl-1.0.16 relative to 1.0.15:
735 * minor incompatible change: revert the changes to sb-posix's error
736 signaling added in 1.0.14.
737 * minor incompatible change: change PROBE-FILE back to returning
738 NIL whenever we can't get a truename, as was the case before 1.0.14.
739 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
740 inherits from ERROR instead of just CONDITION.
741 * new feature: SB-INTROSPECT can provide source locations for instances
742 as well. (thanks to Tobias Rittweiler)
743 * optimization: binding special variables now generates smaller code
744 on threaded platforms.
745 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
746 and cases where no :TEST is given but the compiler can infer that
747 the element to search is of type (OR FIXNUM (NOT NUMBER)).
748 * optimization: better LOGNOT on fixnums.
749 * optimization: modular arithmetic for a particular requested width
750 is implemented using a tagged representation unless a better
751 representation is available.
752 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
753 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
754 for wellformedness and returns a specialized vector. (reported by
755 Francois-Rene Rideau)
756 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
757 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
758 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
759 unscheduling timer at the same time as another timer fires.
760 * bug fix: don't reschedule timers for dead threads.
761 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
762 * bug fix: copying output from RUN-PROGRAM to a stream signalled
763 bogus errors if select() was interrupted.
764 * enhancement: add support for fcntl's struct flock to SB-POSIX.
766 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
767 * enhancement: cleaner backtraces for interactive interrupts, as
768 well as other cases where the interesting frames used to be
769 obscured by interrupt handling frames.
770 * enhancement: untracing a whole package using (UNTRACE "FOO") is
771 now supported, and tracing a whole package using (TRACE "FOO") now
772 traces SETF-functions as well.
773 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
774 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
775 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
776 * unreadably printed representation of hash-tables now includes
778 * bug fix: partially fixed #188: type propagation from assignments
779 is now more efficient.
780 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
781 'DOUBLE-FLOAT) are not flushable.
782 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
783 full address of the object, and none of the tag bits.
784 * bug fix: readably printing hash-tables now respects other printer
785 control variables. (reported by Cedric St-Jean)
786 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
787 keyword with MAKE-HASH-TABLE.
788 * bug fix: export SB-POSIX:MKSTEMP.
789 * bug fix: SORT was not interrupt safe.
790 * bug fix: XREF accounts for the last node of each basic-block as
792 * bug fix: MAKE-INSTANCE optimizations interacted badly with
793 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
794 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
795 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
796 create obsolete instances in the case of redefinition or
797 obsoletion of a superclass. (thanks to Andy Hefner)
798 * bug fix: Support for the Alpha architecture has been revived; it had
799 suffered somewhat from lack of maintenance since sbcl-1.0.
800 * improvements to the Windows port:
801 ** The system detects the codepage to use at startup, instead of
802 using the value from the saved core. (thanks to Kei Suzuki)
804 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
805 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
806 (see documentation for details.)
807 * revived support for OpenBSD (contributed by Josh Elsasser)
808 * partially fixed bug #108: ROOM no longer suffers from occasional
809 (AVER (SAP= CURRENT END)) failures.
810 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
811 bodies no longer cause a WARNING to be signalled. (reported by
813 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
814 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
815 the bug in TRUNCATE.) (reported by Michael Weber)
816 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
817 no samples. (reported by Andy Hefner)
818 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
819 no longer appear as (NIL ...) frames in backtraces.
820 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
821 is now actually exported from SB-EXT as documented. (reported by
823 * bug fix: sb-aclrepl now correctly understands how to inspect
824 single-floats on 64-bit platforms where single-floats are not boxed.
825 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
826 yet been finalized. (reported by Levente Meszaros)
827 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
828 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
829 SBCL-specific optimize qualities.
831 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
832 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
833 an executable in the search path, and does so in the child
834 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
835 been removed; it can be found in the CVS history, for somebody who
836 needs that search behavior (see the manual).
837 * minor incompatible change: compiler policy re. weakening type
838 checks has changed: now type checks are weakened only if SAFETY < 2
840 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
841 unparsing of directory pathnames as files. Analogously,
842 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
843 filename to parse into a directory pathname.
844 * enhancement: implicit generic function creation now signals a
845 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
846 users can bind handlers for and muffle around calls to LOAD.
847 * enhancement: RUN-PROGRAM allows unicode arguments and environments
848 to be used (using the default stream external format), and allows
849 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
850 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
851 strings and vectors whose element-type or simplicity is not fully
852 known at compile-time.
853 * optimization: STRING-TRIM and related functions no longer allocate
854 a new string when no trimming needs to be performed. These functions
855 are also faster than before when the input string has been declared
857 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
858 * optimization: READ-LINE is significantly faster for files containing
860 * optimization: non-open coded uses of character comparison operators
861 (e.g. char=) no longer cons when called with more than one parameter
862 on platforms supporting dynamic-extent allocation.
863 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
864 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
865 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
867 * bug fix: some sequence functions elided bounds checking when
869 * bug fix: too liberal weakening of union-type checks when SPEED >
871 * bug fix: more bogus fixnum declarations in ROOM implementation
874 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
875 * new feature: MAKE-HASH-TABLE now experimentally accepts a
876 :SYNCHRONIZED argument, which makes the hash-table safe for
877 concurrent accesses (but not iteration.) See also:
878 SB-EXT:WITH-LOCKED-HASH-TABLE, and
879 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
880 * optimization: CONCATENATE on strings is an order of magnitude faster
881 in code compiled with (> SPEED SPACE).
882 * optimization: SUBSEQ is ~50% faster on lists.
883 * bug fix: bug 417 fixed -- source location reporting is now more robust.
884 * bug fix: SUBSEQ on a list will now correctly signal an error if if
885 END is smaller then START.
886 * bug fix: SB-PROFILE will no longer report extra consing for nested
887 calls to profiled functions.
888 * bug fix: ROOM implementation had bogus fixnum declarations which
889 could cause type-errors when calling ROOM on large images.
890 * bug fix: if file compilation is aborted, the partial fasl is now
891 deleted, and COMPILE-FILE returns NIL as the primary value.
892 * bug fix: number of thread safety issues relating to SBCL's internal
893 hash-table usage have been fixed.
894 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
895 be returned from its body when the values were being returned
896 using unknown-values return convection and the W-P-O was wrapped
897 inside an UNWIND-PROTECT.
898 * bug fix: sb-posix should now compile again under Windows, enabling
901 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
902 * incompatible change: hash-table accessor functions are no longer
903 automatically protected by locks. Concurrent accesses on the same hash-table
904 from multiple threads can give inconsistent results or even corrupt the
905 hash-table completely. Multi-threaded applications should do their own
906 locking at the correct granularity. In the current implementation it is
907 still safe to have multiple readers access the same table, but it's not
908 guaranteed that this property will be maintained in future releases.
909 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
910 and will signal an error at runtime.
911 * enhancement: SB-THREAD package now exports a semaphore interface.
912 * enhancement: CONS can now stack-allocate on x86 and
913 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
915 * enhancement: nested lists can now be stack allocated on
916 platforms providing stack allocation support.
917 * enhancement: dynamic-extent support has been extended to support
918 cases where there are multiple possible sources for the stack
920 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
921 if the mutex is uncontested on Linux.
922 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
923 as specified by the CLHS. (thanks to Tobias Rittweiler)
924 * bug fix: NaN comparison now works on x86-64.
925 * bug fix: CLOSE :ABORT T on a stream with pending output now
927 * bug fix: instances of non-standard metaclasses using standard
928 instance structure protocol sometimes missed the slot type checks
930 * bug fix: known functions can be inlined in high-debug code.
932 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
933 * minor incompatible change: the MSI installer on Windows no longer
934 associates .lisp and .fasl files with the installed SBCL.
935 * minor incompatible change: :UNIX is no longer present in *FEATURES*
936 on Windows. (thanks to Luis Oliviera)
937 * new feature: SB-CLTL2 contrib module now implements
938 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
939 * optimization: scavenging weak pointers is now more efficient,
940 requiring O(1) instead of O(N) per weak pointer to identify
941 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
942 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
943 method bodies using constant slot-names when the first argument is
944 a specializer parameter for the method.
945 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
946 names, when the class of the instance is a direct instance
947 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
948 as slow as the constant slot-name case.)
949 * optimization: member type construction is now O(N) instead
951 * optimization: UNION and NUNION are now O(N+M) for large
952 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
954 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
955 now more readable in environments like Slime which display it.
956 (thanks to Tobias C. Rittweiler)
957 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
958 was able to infer the correct argument type for the object on which
959 the CAS operation was being performed.
960 * bug fix: copy propagation interfered with parallel assignment
961 semantics in local calls. (reported by Paul Khuong)
962 * bug fix: the signed modular fixnum shift compiled to wrong code on
963 x86 and x86-64. (spotted by a slight modification to some of
966 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
967 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
968 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
969 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
971 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
972 and generic function now print the object identity for anonymous
973 instances. (thanks to Attila Lendvai)
974 * enhancement: as an extension to MOP, SBCL now supports SETF of
975 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
976 (thanks to Attila Lendvai)
977 * enhancement: sb-cover has an alternate annotation mode which puts
978 the form annotations at the car of the form, instead of annotating
979 it completely. The benefit of this mode is that it shows better
980 which forms were instrumented by the compiler.
981 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
982 by printer control variables. (reported by Dan Corkill)
983 * bug fix: system leaked memory when delayed output was performed by
984 the OS in smaller chunks then expected. (thanks to David Smith)
985 * bug fix: system leaked memory when file streams were not closed
987 * bug fix: large objects written to slow streams that were modified
988 after the write could end up with the modified state written to
989 the underlying file descriptor.
990 * bug fix: multiple threads operating in parallel on the same stream
991 could cause buffer-overflows.
992 * bug fix: source location information is stored correctly
993 (broken since 1.0.6). This bug would generally show up as the
994 Slime debugger highlighting the wrong form when the sldb-show-source
996 * bug fix: Branch forms are again annotated as branches in the sb-cover
998 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
999 on x86-64. (reported by Gregory Vanuxem)
1000 * bug fix: EQUALP could return wrong results for structures with raw
1001 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1002 word). (reported by Vjacheslav Fyodorov)
1003 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1006 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1007 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1008 atomic compare-and-swap operations on threaded platforms.
1009 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1010 allows assigning a global minimum value to optimization qualities
1011 (overriding proclamations and declarations).
1012 * enhancement: closed over variables can be stack-allocated on x86
1014 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1016 * optimization: slot definition lookup is now O(1). This speeds up
1017 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1018 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1019 * optimization: ASSOC and MEMBER can now be open-coded for all
1020 combinations of keyword arguments when second argument is constant
1021 and SPEED >= SPACE. In other cases a specialized version is
1023 * bug fix: using obsoleted structure instances with TYPEP and
1024 generic functions now signals a sensible error.
1025 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1026 (reported by Kristoffer Kvello)
1027 * bug fix: backtrace construction is now more careful when making
1028 lisp-objects from pointers on the stack, to avoid creating bogus
1029 objects that can be seen by the GC.
1030 * bug fix: defaulting of values in contexts expecting more than 7
1031 variables now works on x86-64. (reported by Christopher Laux)
1032 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1034 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1035 as the property-list of a symbol.
1036 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1037 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1038 situations requested, are once again file-compileable. (reported
1041 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1042 * MOP improvement: support for user-defined subclasses of
1043 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1044 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1045 the expansion of DEFMETHOD, is responsible for generating a form
1046 which creates a list of specializers when evaluated. Additional
1047 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1048 debugging and introspective support.
1049 * minor incompatible change: the (unsupported) spinlock interface
1050 has changed: free spinlock now has the value NIL, and a held spinlock
1051 has the owning thread as its value.
1052 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1053 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1055 * enhancement: name of a socket-stream is now "a socket" instead of
1056 "a constant string".
1057 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1058 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1059 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1060 for generic functions. (Thanks to Tobias C. Rittweiler)
1061 * optimization: bignum printing speed has been improved by 20-40%
1062 (depending on the bignum size.)
1063 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1065 * bug fix: the cache used by the CLOS to store precomputed effective
1066 methods, slot offsets, and constant return values is now thread and
1068 * bug fix: generic function dispatch function updating is now thread
1069 and interrupt safe (in the sense that the known issues have been
1071 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1072 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1073 * bug fix: asdf systems with dependencies to the SB-POSIX or
1074 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1075 * bug fix: interrupt safety of applicable method computation has been
1078 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1079 * new contrib: sb-cover, an experimental code coverage tool, is included
1080 as a contrib module.
1081 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1082 significantly faster.
1083 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1084 produce more efficient code on x86-64 if the compiler can determine
1085 that (+ INDEX <constant>) does not require a bounds check and FOO
1086 has an element type at least 8 bits wide.
1087 * enhancement: a new, experimental synchronous timeout facility is
1088 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1089 * enhancement: when a symbol name conflict error arises, the
1090 conflicting symbols are always printed with a package prefix.
1091 (thanks to Kevin Reid)
1092 * enhancement: stepping is now once again supported on the SPARC and
1093 MIPS platforms. (It is also now more likely to work on CheneyGC
1095 * enhancement: sb-sprof can now also track and report accurate call
1097 * bug fixes: the treatment of non-standard subclasses of
1098 SB-MOP:SPECIALIZER is more correct.
1099 * incompatible change: PURIFY no longer copies the data from the
1100 dynamic space into the static and read-only spaces on platforms
1101 that use the generational garbage collector
1102 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1104 * bug fix: GC race condition occasionally resulting in crashes with
1105 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1107 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1109 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1110 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1111 * bug fix: an asynchronous interrupt could previously leave the
1112 system running with GC inhibited.
1113 * bug fix: a DECLARE form evaluated at top-level now causes an error
1114 rather than silently (or verbosely) returning NIL.
1115 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1116 result in a error being signalled due to source form lookup errors.
1117 (reported by Peter Graves)
1119 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1120 * incompatible change: removed writer methods for host-ent-name,
1121 host-ent-addresses -- changing the values did not update the DNS
1123 * minor incompatible change: changed experimental JOIN-THREAD interface
1124 * documentation: the manual now lists reader and writer methods
1125 in class slot documentation sections. (thanks to Richard M Kreuter)
1126 * documentation: unwinding from asyncronous events has been
1127 documented as unsafe.
1128 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1129 in multithreaded application code.
1130 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1131 platforms. (thanks to James Anderson for the optimization hint)
1132 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1134 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1135 variants no longer cons.
1136 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1137 their NOT- variants no longer cons.
1138 * optimization: EQUAL hash tables no longer use SXHASH for objects
1139 of all data types, but instead use an EQL hash for types for which
1140 EQUAL is the same as EQL.
1141 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1142 are significantly faster.
1143 * optimization: new STRING-OUTPUT-STREAM implementation is much
1144 faster for large outputs and conses 30% less on average.
1145 * enhancement: XREF information is now collected for references made
1146 to global variables using SYMBOL-VALUE and a constant argument.
1147 * enhancement: SIGINT now causes a specific condition
1148 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1149 * bug fix: FILE-POSITION used to signal an error in some cases where
1150 ANSI requires it to return NIL.
1151 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1152 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1153 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1155 * bug fix: bad type declaration in the CLOS implementation has
1156 been fixed. (reported by James Anderson)
1157 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1158 (thanks to Lutz Euler)
1159 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1160 required by the CLHS. (reported by Samium Gromoff)
1161 * bug fix: dead unbound variable references now signal an error.
1162 (reported by Marco Monteiro)
1163 * bug fix: / with an unused value was being deleted in safe code.
1164 (thanks to Marco Monteiro and Kevin Reid)
1165 * bug fix: number of characters that can be written onto a single
1166 line in a file is unlimited.
1167 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1168 been fixed by inhibiting interrupts for when GC is disabled.
1169 * bug fix: some interrupt safety issues with GETHASH, (SETF
1170 GETHASH), CLRHASH and REMHASH have been fixed.
1171 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1172 specifier no longer causes infinite recursion.
1173 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1174 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1175 * bug fix: an &environment argument with the correct variable information
1176 is passed to macros that are expanded during byte compilation.
1177 (reported by Samium Gromoff)
1178 * bug fix: a logic error was causing the hash function for bignums to
1179 have excessive amounts of collisions. (reported by Faré Rideau)
1180 * bug fix: modifying the contents of an array could change the return
1181 value of SXHASH on that array, which is only allowed for strings
1182 and bit vectors. (bug introduced in 0.9.16)
1183 * improvement: the x86-64/darwin port now passes all tests (except
1184 for the debugger tests) but should still be considered
1185 experimental until this is fixed.
1186 * improvement: a style-warning is signaled for CASE (etc) clauses with
1187 duplicate keys. (thanks to Kevin Reid)
1188 * improvement: macos/x86 and macos/x86-64 now use mach exception
1189 handlers for dealing with illegal instructions (for trapping and
1190 error handling) and memory protection violations (for GC).
1192 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1193 * new platform: experimental support for x86-64/darwin (MacOS).
1194 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1195 and getnameinfo sockets functions are used instead of gethostbyaddr
1196 and gethostbyname, on platforms where the newer functions are available.
1197 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1199 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1200 don't print the startup banner, but behave as if --noinform was passed
1201 as a command line argument. (thanks to Kevin Reid)
1202 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1203 * optimization: code using alien values with undeclared types is much faster.
1204 * optimization: the compiler is now able to open code SEARCH in more cases.
1205 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1206 * bug fix: using standardized COMMON-LISP special variables as loop
1207 variables no longer signals bogus package lock violations. (reported
1209 * bug fix: declaring local loop variables to be of a range-limited type
1210 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1211 (reported by Andras Simon)
1212 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1213 bugs remain on x86-64.)
1214 * bug fix: the #= and ## reader macros now interact reasonably with
1215 funcallable instances.
1216 * bug fix: type-checks for function arguments were compiled using the
1217 compiler policy settings of the wrong lexical environment (in 1.0.2
1219 * bug fix: SHADOW accepts characters as string designators, as required
1220 by the spec (thanks to Eric Marsden)
1221 * bug fix: fixed GC safety issues when foreign functions are called with
1222 non-base strings as arguments
1223 * bug fix: more consistent error output for fatal-compiler-warnings, like
1225 * bug fix: functions with proper names were showing up as NIL in
1226 backtraces (reported by Edi Weitz, regression in 1.0.2)
1228 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1229 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1230 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1231 produce more efficient code on the x86 if the compiler can determine
1232 that (+ INDEX <constant>) does not require a bounds check and FOO
1233 has an element type at least 8 bits wide.
1234 * bug fix: references to undefined variables are handled the same way
1235 in toplevel forms as in the normal compiler
1236 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1238 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1239 (thanks to Jon Buller)
1240 * improvement: faster compilation times for complex functions
1241 * improvement: added readlink support to SB-POSIX (thanks to Richard
1244 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1245 * improvement: experimental support for mach exception handling on
1246 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1248 * improvement: support for GBK external format.
1249 (thanks to Chun Tian (binghe))
1250 * improvement: the debugger now displays variables that have been closed
1251 over, in code compiled with (DEBUG 2) or higher
1252 * improvement: support for executable cores on NetBSD (thanks to
1254 * new feature: added a RESTART-FRAME debugger command
1255 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1256 be used to provide an implementation for FILE-POSITION on Gray streams
1257 (thanks to Eric Marsden)
1258 * new feature: add syslog, openlog and closelog support to SB-POSIX
1259 (thanks to Richard Kreuter)
1260 * optimization: the function call overhead in code compiled with
1261 a high DEBUG optimization setting is significantly
1262 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1263 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1264 (thanks to Tony Martinez)
1265 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1266 evaluated once (reported by Kevin Reid)
1267 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1268 works again (thanks to Kilian Sprotte)
1269 * bug fix: an error is signaled for tagbodies with duplicate tags
1270 (thanks to Stephen Wilson)
1271 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1272 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1273 stack frames from alien callbacks.
1274 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1275 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1276 65k pages (thanks to David Woodhouse)
1277 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1279 changes in sbcl-1.0.1 relative to sbcl-1.0:
1280 * new platform: FreeBSD/x86-64, including support for threading.
1281 * new feature: the compiler stores cross-referencing information
1282 about function calls (who-calls), macroexpansion (who-macroexpands)
1283 and special variables (who-binds, who-sets, who-references) for code
1284 compiled with (< SPACE 3). This information is available through the
1285 sb-introspect contrib.
1286 * new feature: users may subclass SEQUENCE, and have instances of
1287 these classes interoperate with standard Common Lisp functions if
1288 a number of methods are defined. (This feature is experimental
1289 and the interface subject to change based on feedback from SBCL
1290 users and the general community)
1291 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1292 x86/x86-64, rather than the previous fixed depth of 8
1293 * improvement: another pthread back-end of mutex "pthread-futex".
1294 * bug fix: non-ascii command-line arguments are processed correctly
1295 (thanks to Yaroslav Kavenchuk)
1296 * bug fix: non-required arguments were not passed correctly when a method
1297 defined using DEFMETHOD was called from a mop-generated method using
1298 CALL-NEXT-METHOD (reported by Pascal Costanza)
1299 * bug fix: recursion is now permitted in accessors through
1300 SLOT-UNBOUND. (reported by Pascal Costanza)
1301 * bug fix: an error was signaled at startup if the HOME environment
1302 variable was defined, but had an empty value (reported by Peter Van Eynde)
1303 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1304 signal a PROGRAM-ERROR, not a BUG.
1305 * bug fix: SB-POSIX:READDIR works when built with large file support.
1306 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1308 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1309 for better automatic indentation support. (thanks to Matt Pillsbury)
1310 * optimization: loading generic functions no longer takes O(n^2) time,
1311 proportional to the amount of methods in the generic function
1312 (reported by Todd Sabin and Jeremy Brown)
1313 * optimization: the FIND and POSITION family of sequence functions
1314 are significantly faster on arrays whose element types have been
1316 * improvements to the Windows port:
1317 ** Intermittent heap corruption problems have been fixed. (thanks
1318 to Alastair Bridgewater)
1319 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1321 ** Lisp is able to unwind foreign exception frames from alien
1322 callbacks. (thanks to Alastair Bridgewater)
1324 changes in sbcl-1.0 relative to sbcl-0.9.18:
1325 * improvement: experimental support for threading on FreeBSD/x86.
1326 (thanks to NIIMI Satoshi)
1327 * improvement: runtime option --dynamic-space-size can be used
1328 to set the size of the dynamic space reserved on startup.
1329 * improvement: floating point modes in effect are now saved in
1330 core, and restored on startup.
1331 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1332 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1333 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1334 threads are not running after *SAVE-HOOKS* have run.
1335 * improvement: writes to CLOS instance slots are type-checked in code
1336 compiled with (SAFETY 3)
1337 * improvement: floating-point exception handling on FreeBSD (thanks to
1339 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1340 (thanks to Zach Beane)
1341 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1343 * improvement: added support for the Shift-JIS external format.
1344 (contributed by NIIMI Satoshi)
1345 * improvement: callbacks are supported on Linux/PPC. (thanks to
1347 * bug fix: compiler bug triggered by a (non-standard) VALUES
1348 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1349 * bug fix: file compiler no longer confuses validated and already
1350 dumped structurres. (reported by Kaersten Poeck)
1351 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1352 fill-pointer signals a type-error as required. (thanks to
1354 * bug fix: disassemly of funcallable instances works.
1355 * bug fix: single stepping on PPC.
1356 * bug fix: fix thread-safety problems in the type system (generally
1357 manifesting as nonsensical errors like "STRING is a bad type specifier
1358 for sequences" or "The value 1 is not of type FIXNUM")
1359 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1360 (reported by Josip Gracin)
1361 * bug fix: an error is signaled for attempts to displace arrays with
1362 incompatible element types (thanks to Mario Mommer)
1363 * bug fix: more correct handling of wide characters in debug info
1364 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1365 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1366 and don't cause extra consing
1367 * optimization: MAP and MAP-INTO are significantly faster on vectors
1368 whose elements types have been declared.
1369 * Improvements to SB-SPROF:
1370 ** Support for allocation profiling
1371 ** Reduced profiling overhead, especially for long profiling runs
1372 * Improvements to the Windows port:
1373 ** floating point exceptions are now reported correctly.
1374 ** stack exhaustion detection works partially.
1375 ** more accurate GET-INTERNAL-REAL-TIME.
1376 ** better RUN-PROGRAM behaviour in case of errors in the child
1378 ** PROBE-FILE now simplifies pathnames correctly.
1379 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1380 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1381 1st 1970 (although time timezone data will be unreliable).
1382 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1384 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1385 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1386 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1388 * bug fix: two potential GC deadlocks affecting threaded builds.
1389 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1390 returns T (reported by Anton Kazennikov)
1391 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1392 with non-variable places
1393 * bug fix: remove a race condition in the setting of
1394 funcallable-instance functions, this should make threaded CLOS
1395 code more stable against memory faults.
1396 * bug fix: corruption of specials when unbinding is interrupted by an
1397 asynchronous unwind (reported by Hannu Koivisto)
1398 * improvement: the debugger will now also display local variables that
1399 are only used once, for code compiled with a DEBUG optimization quality
1402 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1403 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1404 * incompatible change: External-format support for FFI calls. The
1405 SB-ALIEN:C-STRING no longer implies an ASCII
1406 external-format. Instead the string is subject to external-format
1407 conversion. Additionally return values of type SB-ALIEN:C-STRING
1408 are by default of type (SIMPLE-ARRAY CHARACTER), not
1409 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1410 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1411 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1412 * incompatible change: SB-EXT package no longer contains the
1413 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1414 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1416 * incompatible change: the single-stepper is no longer available
1417 on Alpha, Mips and Sparc platforms.
1418 * minor incompatible change: the direct superclasses of
1419 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1420 not (STANDARD-OBJECT FUNCTION). This makes the
1421 class-precedence-lists of GENERIC-FUNCTION and
1422 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1424 * minor incompatible change: the default stream external format on
1425 non-unicode SBCL is no longer detected from the locale, but is always
1427 * new feature: Add a version of evaluator that uses an interpreter instead
1428 of the compiler. EVAL still uses the compiler by default, to switch it
1429 to use the interpreter, set the value of the variable
1430 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1431 * minor incompatible change: the single-stepper REPL has been merged
1432 with the normal debugger (see the "Stepping" heading of the debugger help
1433 for more details). The debugger command STEP will no longer switch
1434 to the single-stepper REPL.
1435 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1436 for a type now works.
1437 * bug fix: loading of default sysinit file works. (thanks to Leonid
1439 * bug fix: better detection of circularities in the file-compiler.
1440 (reported by Marco Monteiro)
1441 * bug fix: the CL pathname functions now work with files that have
1442 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1443 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1444 systems with Unix98 pty semantics.
1445 * bug fix: ASDF-INSTALL will now work with bsd tar.
1446 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1448 * bug fix: timers expiring in dead threads no longer cause a
1449 type-error (reported by Paul "Nonny Mouse").
1450 * bug fix: thanks to more lightweight single-stepper instrumentation,
1451 code compiled with (DEBUG 3) will compile and execute significantly faster,
1452 and will have more accurate type-inferencing than before
1453 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1454 whose bindings are modified
1455 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1456 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1457 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1458 CL:SOFTWARE-VERSION with proper version
1460 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1461 * feature: implemented the READER-METHOD-CLASS and
1462 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1463 as specified by AMOP.
1464 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1466 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1467 (thanks to Lutz Euler)
1468 * optimization: hashing of general arrays and vectors has been
1469 improved. (reported by Any Fingerhut)
1470 * enhancement: SB-INTROSPECT is now able to find definitions of
1471 profiled functions. (thanks to Troels Henriksen)
1472 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1473 as well, allowing compiler-macros for SETF-functions to expand.
1474 * enhancement: step-instrumentation no longer wraps known
1475 single-value functions with multiple-value context, allowing
1476 better type inference.
1477 * fixed bug #337: use of MAKE-METHOD in method combination now works
1478 even in the presence of user-defined method classes. (reported by
1479 Bruno Haible and Pascal Costanza)
1480 * fixed bug #339(c): if there are applicable methods not part of any
1481 long-form method-combination group, call INVALID-METHOD-ERROR.
1482 (reported by Bruno Haible)
1483 * fixed bug #361: the :FUNCTION initarg in the protocol for
1484 initialization of methods can now be used to override
1485 internally-produced optimized functions. (reported by Bruno
1487 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1488 system-provided lambda expression no longer cause warnings about
1489 unbound #:|pv-table| symbols.
1490 * bug fix: improved the handling of type declarations and the
1491 detection of violations for keyword arguments with non-constant
1493 * bug fix: potentially erronous calls to PATHNAME and
1494 MERGE-PATHNAMES were being flushed in some cases.
1495 (reported by Richard Kreuter)
1496 * bug fix: compiled calls to TYPEP were mishandling obsolete
1497 instances. (reported by James Bielman and Attila Lendvai)
1498 * bug fix: format strings with ~> without matching ~< no longer
1499 trigger an AVER, but signal an understandable error instead.
1500 (reported by Antonio Martinez)
1501 * bug fix: specifying an output-file without a pathname-type for
1502 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1503 of input-file instead of "fasl". (reported by Robert Dodier)
1504 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1505 (reported by James Y Knight).
1506 * bug fix: compiler-macros-function did not consider the environment
1507 argument for shadowing by local functions.
1508 * bug fix: compiler-macros expansion was inhibited by local INLINE
1510 * bug fix: inline expansions of known functions were subject to
1511 step-instrumentation in high debug policies, leading to problems
1512 with type-inference.
1513 * bug fix: compiler failed to differentiate between different CONS
1514 types in some cases.
1515 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1516 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1517 * bug fix: #368: incorrect use of expressed vs. upgraded array
1519 * bug fix: #306a: more precise unions of array types.
1520 * thread-safety improvements:
1521 ** CONDITION-WAIT could return early on Linux, if the thread was
1522 interrupted and subsequently continued with SIGCONT.
1523 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1525 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1526 * added support for the ucs-2 external format. (contributed by Ivan
1528 * minor incompatible change: pretty printing of objects of type
1529 (cons symbol) is, in the default pprint-dispatch-table, now
1530 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1532 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1533 called later in a class's lifetime, possibly as late as when the
1534 first instance of the class is created. Previously,
1535 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1536 class became finalizeable.
1537 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1538 for multibyte external-format streams. (thanks to "vbzoli")
1539 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1540 with :ALLOCATION :CLASS inherited from superclasses of the
1542 * fixed bug: anonymous classes can now be created using the :NAME
1543 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1544 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1545 * fixed bug: core-files saved with :EXECUTABLE T can again be
1546 executed when SBCL_HOME isn't set. (reported by James Knight)
1547 * fixed bug: toplevel LOCALLY forms with declarations could
1548 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1549 * fixed bug: printing from several different threads using different
1550 values of *print-case* could cause invalid output, due to
1551 some internal special variables of the printer not being bound
1552 thread-locally (reported by Max Mikhanosha)
1553 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1554 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1555 (reported by Pascal Costanza)
1556 * fixed bug: FINALIZE-INHERITANCE is called from
1557 REINITIALIZE-INSTANCE on classes when the class has previously
1558 been finalized, as required by AMOP.
1559 * minor code generation optimizations:
1560 ** better register allocation in CLOS dispatching functions
1561 ** overflow detection when coercing signed bytes to fixnums on x86-64
1562 ** is now implemented with one IMUL instruction instead of three shifts
1563 ** more efficient bit-vector access on x86 and x86-64
1564 ** more efficient access to raw structure slots on x86 and x86-64
1565 * fixed some bugs revealed by Paul Dietz' test suite:
1566 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1567 return its argument.
1569 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1570 * feature: thread support on Solaris/x86, and experimental thread support
1572 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1574 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1575 default method for SLOT-UNBOUND.
1576 * minor incompatible change: prevent the user from specializing the
1577 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1578 somewhat counter to the intent of the protocol, I (CSR) think, and
1579 additionally it just doesn't work in SBCL as currently
1580 implemented, thanks to optimizations (that are always valid for
1581 the other three SLOT-VALUEish functions, but not for the setter).
1582 * minor incompatible change: the :SB-LDB feature is now enabled by
1583 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1584 the low-level debugger.
1585 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1586 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1587 down to an SB-SYS:FD-STREAM, allowing direct communication in
1588 more cases. Temporary files and pipes are still used as a fallback
1590 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1591 on the non-reentrant C functions localtime(3) and gmtime(3).
1592 * bug fix: global optimization policy was not visible in LOCALLY and
1594 * bug fix: class objects can be used as specializers in methods.
1595 (reported by Pascal Costanza)
1596 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1597 with a type error. (reported by blitz_ on #lisp)
1598 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1599 failed with a type error. (reported by Pascal Bourguignon)
1600 * bug fix: merging pathnames against defaults with :DIRECTORY
1601 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1602 (reported by James Y Knight)
1603 * bug fix: saving large (>2GB) cores on x86-64 now works
1604 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1605 constant index and a (simple-array (signed-byte 32)) array
1606 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1607 error (patch by Robert J. Macomber)
1608 * feature: TIME now displays the amount of run-time spent in GC
1609 * bug fix: The debugger now does a better job of respecting
1610 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1611 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1612 workaround for bug 403.)
1613 * bug fix: floating point exception handling now works on FreeBSD
1614 (thanks to NIIMI Satoshi)
1615 * fixed some bugs revealed by Paul Dietz' test suite:
1616 ** MISC.641: LET-conversion were not supposed to work in late
1618 * improvements to the Win32/x86 port:
1619 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1620 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1622 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1623 * new feature: source path information is generated for macro-expansion
1624 errors for use in IDE's like Slime (thanks to Helmut Eller)
1625 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1626 * bug fix: compiler does not loop forever on an invalid type in
1628 * improvement: compilation of most CLOS applications is significantly
1630 * optimization: added a limited bytecode compiler for simple toplevel
1631 forms, speeding up compilation and FASL loading
1632 * bug fix: the statistical profiler now properly distinguishes anonymous
1635 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1636 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1637 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1638 into subclasses of the finalized class. Now user calls to
1639 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1640 system return before any subclasses are finalized.
1641 * minor incompatible change: The reader no longer ignores errors
1642 regarding non-existent packages in #+ and #- feature tests.
1643 * new feature: command line options --no-sysinit, --no-userinit to
1644 inhibit loading the corresponding init files
1645 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1646 for sending data through UDP sockets (thanks to François-René Rideau)
1647 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1648 error is signalled instead (thanks to François-René Rideau)
1649 * minor incompatible change: Error signalling behaviour of lexical
1650 operations violating package locks has changed slightly. Refer to
1651 documentation on package locks for details.
1652 * enhancement: EVAL can process IF-expressions without resorting to the
1654 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1655 constant-folded properly due to missing out-of-line functions.
1656 (reported by Mika Pihlajamäki)
1657 * bug fix: LISTEN sometimes returned T even in cases where no data was
1658 immediately available from the stream
1659 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1660 were reversed. (reported by Levente Mészáros)
1661 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1662 when given a vector displaced to an adjustable array. (reported
1664 * bug fix: derivation of float boundaries from numbers outside the
1665 appropriate float range (reported by John Wiseman)
1666 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1668 * bug fix: precomputing cache entries for generic functions with
1669 some subclasses of specializers as yet invalid does not attempt to
1670 fill a cache line with a negative offset. (reported by Levente
1672 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1673 allow condition class objects as arguments to DOCUMENTATION and
1674 (SETF DOCUMENTATION); only find and set documentation for
1675 structure names for the STRUCTURE doc-type. (suggested by Gary
1677 * improvements to the Win32/x86 port:
1678 ** (user-homedir-pathname) and default initialization file
1679 locations now know about the user's "Documents and Settings"
1680 directory (thanks to Yaroslav Kavenchuk)
1681 ** run-program is implemented (thanks to Mike Thomas)
1682 ** sockets support (thanks to Timothy Ritchey)
1683 ** better backtrace support (thanks to Alastair Bridgewater)
1684 ** sb-grovel supported
1685 ** asdf-install and sb-posix work somewhat
1686 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1687 * improvements to the Solaris/x86 port:
1688 ** works on Solaris 11/Solaris Express
1689 ** floating-point exception handling support
1690 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1691 * fixed some bugs revealed by Paul Dietz' test suite:
1692 ** REMOVE-METHOD returns its generic function argument even when
1693 the method is not one of the generic functions' methods.
1694 ** objects declared as MEMBER types can be admissible arguments to
1695 structure accessors.
1696 ** printing characters should simply be printed by the FORMAT ~:C
1698 ** compiler failure when compiling functions with hairy constant
1699 defaults for optional parameters.
1700 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1701 function, which is already optimized.
1703 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1704 * new platform: experimental support for SBCL x86/Darwin, including
1705 MacOS X 10.4.5 on Intel.
1706 * new feature: Unicode character names are now known to the system
1707 (through CHAR-NAME and NAME-CHAR).
1708 * new feature: the filesystem location of SBCL's core file is
1709 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1710 * minor incompatible change: the contrib modules SB-POSIX and
1711 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1712 this change is to make it easier to distribute
1713 location-independent binaries.
1714 * bug fix: as implied by AMOP, standardized classes no longer have
1715 slots named by external symbols of public packages. (reported by
1717 * optimization: calling functions via constant symbols -- as in
1718 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1719 via the function object as in (FUNCALL #'FOO).
1720 * optimization: on x86 and x86-64, the calling convention for the
1721 case of dealing with an unknown number of values has been altered
1722 to be friendlier to the prediction heuristics implemented,
1723 particularly with reference to CALL and RET pairing. (thanks to
1724 Alastair Bridgewater)
1725 * optimization: on x86, the code for access to thread-local symbol
1726 values and binding/unbinding of thread-local symbols is smaller.
1727 (thanks to Alastair Bridgewater)
1728 * enhancement: CONSTANTP is now able to determine constantness of
1729 more complex forms, including calls to constant-foldable standardized
1730 functions and some special forms beyond QUOTE.
1731 * fixed bug: occasional GC crashes on Solaris/x86
1732 * optimization: x86-64 supports stack allocation of results of simple
1733 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1734 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1735 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1736 (thanks to James Knight)
1737 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1738 by the standard (thanks to Stephen Compall)
1740 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1741 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1742 be used for bundling the runtime and the core file into one
1743 executable binary. This feature is not currently supported on all SBCL
1744 platforms. (thanks to James Bielman and NIIMI Satoshi)
1745 * new feature: a generational or ephemeral garbage collector is now
1746 the default on the PowerPC platform (both Linux and Darwin). The
1747 old Cheney (stop and copy) collector is a build-time option.
1748 (thanks to Cyrus Harmon, after Raymond Toy)
1749 * minor incompatible change: the method by which SBCL finds its
1750 contributed modules has changed; it no longer relies on symbolic
1751 links from an $SBCL_HOME/systems directory, but searches directly
1752 in the subdirectories of $SBCL_HOME.
1753 * enhancement: the dynamic heap size on the Linux/PPC platform is
1754 markedly larger, even using the older Cheney garbage collector.
1755 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1756 certain complicated string types. (reported by Gary King)
1757 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1758 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1759 * fixed bug: DOCUMENTATION on structures no longer signals an
1760 error if no structure type of the right name exists. (reported by
1762 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1763 applicable non-standard primary or :AROUND method on
1764 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1765 no longer cause unbound variable errors. (reported by Kevin Reid)
1766 * fixed bug: metacircle resolution in cases where methods have slots
1767 added before the slots from STANDARD-METHOD. (reported by Jean
1769 * fixed bug: the Power PC assembly code for calling into lisp
1770 sometimes computed its return address wrongly (depending on the
1771 15th bit of the address, fixed at link time). This used to
1772 manifest itself in a segmentation violation while building PCL.
1773 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1774 many others over the years)
1775 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1776 the stack pointer (treated as a signed integer) is negative.
1777 (thanks to Peter van Eynde)
1779 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1780 * new platform: experimental support for the Windows operating
1781 system has been added. (thanks to Alastair Bridgewater)
1782 * fixed several bugs in and robustified the PPC FFI (including
1783 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1784 * bug fix: allow non-simple string symbol names (reported by Paul
1786 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1788 * bug fix: saving a core corrupted callbacks on x86/x86-64
1789 * bug fix: closed a loophole in metacircularity detection and
1790 grounding in the PCL implementation of CLOS.
1791 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1792 (reported by tomppa on #lisp)
1793 * bug fix: clear the direction flag on Lisp -> C transitions, as
1794 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1795 (reported by Andrej Grozin and Hendrik Maryns)
1796 * optimization: major improvements to GC efficiency on GENCGC platforms
1797 * optimization: faster implementation of EQUAL
1798 * optimization: emit more efficient opcodes for some common
1799 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1800 * optimization: several other minor code-generation improvements on x86-64
1801 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1803 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1804 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1805 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1806 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1807 by ANSI as a generic function, and for consistency (SETF
1808 GENERIC-FUNCTION-NAME) is treated likewise.
1809 * fixed bug #233.b: make constraint propagation notice when a variable
1810 value is changed after it is referenced but before it is used
1811 * fixed bug #296: no more arbitrary behaviour from filenames with
1812 odd characters as --load arguments. (reported by Adam Warner)
1813 * fixed bug #390: :CHARACTER-SET pathname components now work as
1814 expected. (reported by Tim Daly Jr)
1815 * fixed bug #391: complicated :TYPE intersections in slot
1816 definitions no longer cause an error in PCL internals.
1817 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1818 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1819 returning the number of octets which would be written to the
1820 file-stream. (thanks to Robert J. Macomber)
1821 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1822 arguments to the internal stream functions. (thanks to David
1824 * bug fix: stack exhaustion is now handled on the x86/SunOS
1825 platform. (thanks to Daisuke Homma)
1826 * bug fix: more accurate ROOM results on GENCGC platforms
1827 * optimization: improved type inference for arithmetic-for
1828 index variables in LOOP
1829 * optimization: faster floating-point SQRT on x86-64
1830 * fixed some bugs revealed by Paul Dietz' test suite:
1831 ** DOCUMENTATION returns NIL instead of "" for method combinations
1832 that don't have a docstring
1834 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1835 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1836 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1837 therefore are not customizeable by user code (as seems to be at
1838 least permitted and maybe required by AMOP). As a consolation,
1839 however, the SBCL implementation of these functions now calls
1840 REINITIALIZE-INSTANCE as specified by AMOP.
1841 * bug fix: slot-definition documentation is propagated as per ANSI
1842 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1843 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1844 argument, as do eslotd initialization methods. (from Pascal
1845 Costanza's "Closer" project)
1846 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1847 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1849 * bug fix: it is now possible to have more than one subclass of
1850 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1851 (reported by Bruno Haible, Pascal Costanza and others)
1852 * bug fix: the dependent update protocol now works for generic
1853 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1854 and Pascal Costanza)
1855 * bug fix: condition-class instances corresponding to
1856 DEFINE-CONDITION forms are now created eagerly. (reported by
1857 Kalle Olavi Niemitalo on comp.lang.lisp)
1858 * bug fix: floating point printing is more accurate in some
1859 circumstances. (thanks to Simon Alexander)
1860 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1861 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1862 * bug fix: callbacks on OS X now preserve stack-alignment.
1863 (thanks to Cyrus Harmon)
1864 * enhancement: the x86-64 disassembler is much better at
1865 disassembling SSE instructions. (thanks to Lutz Euler)
1866 * enhancement: CHECK-TYPE on a variable now allows type-inference
1867 (thanks to Vincent Arkesteijn)
1868 * optimization: improved performance of EUC-JP external format.
1869 (thanks to NIIMI Satoshi)
1870 * optimization: performance improvements to IO on file streams of
1871 :ELEMENT-TYPE CHARACTER
1872 * optimization: much faster memory allocation on x86-64
1873 * optimization: faster garbage collections (latency and throughput)
1875 * optimization: faster bignum subtraction and division on x86 and x86-64
1876 (thanks to Lutz Euler)
1877 * optimization: more accurate type-inference for loops that use a
1878 floating point index variable or a negative step.
1880 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1881 * bug fix: add a workaround to SBCL looping infinitely at startup on
1882 Linux kernels with apparently buggy implementations of personality().
1883 (thanks to Svein Ove Aas)
1884 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1885 (thanks to David Lichteblau)
1886 * bug fix: local bindings shadow global symbol macros for
1887 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1888 * optimization: non-open coded uses of numeric comparison operators
1889 (e.g. >) no longer cons when called with more than one parameter
1890 on platforms supporting dynamic-extent allocation.
1891 * enhancement: saving cores with foreign code loaded is now supported
1892 on MIPS/Linux in addition to the previously supported platforms.
1893 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1894 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1895 * bug fix: division by zero in sb-sprof when no samples were collected
1896 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1897 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1898 (thanks to Alexander Kjeldaas)
1899 * new feature: ignoring the return values of destructive functions
1900 like NREVERSE signals a compile-time style-warning.
1901 (thanks to Kevin Reid)
1902 * new feature: the alignment of alien structure fields can be
1903 explicitly specified. (thanks to Cyrus Harmon)
1904 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1905 and dump core on SIGQUIT
1907 ** incompatible change: threads do not inherit values of specials
1908 from their parents (see manual)
1909 ** bug fix: threads stacks belonging to dead threads are freed by the
1910 next exiting thread, no need to gc to collect thread stacks anymore
1911 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1912 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1913 ** bug fix: dynamic variable and thread start related gc lossage
1914 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1916 * fixed some bugs revealed by Paul Dietz' test suite:
1917 ** SUBTYPEP is slightly more accurate on heinously complicated
1918 CONS types where some of the members have uncertain (in the
1919 NIL, NIL sense) type relationships to each other.
1921 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1922 no longer purified unless :PURIFY T is explicitly specified.
1923 ** Non-purified cores are significantly smaller than before
1925 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1926 * new feature: timers based on Zach Beane's excellent timer package
1927 * added support for the following external formats: koi8-u,
1928 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1929 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1930 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1931 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1932 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1933 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1934 * incompatible change: a threaded SBCL will no longer revert to
1935 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1936 * bug fix: interrupts are disabled until startup is complete; no
1937 more sigsegvs when receiving a signal to soon
1938 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1940 * bug fix: add a workaround for the memory randomization features in
1941 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1942 workaround will only be in effect on systems with the proc filesystem
1944 * bug fix: printing objects of type HASH-TABLE signals a
1945 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1947 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1948 have been running for over 50 days. (reported by Gilbert Baumann)
1949 * bug fix: the logic for getting names of functions gets less
1950 confused when confronded with alternate-metaclass
1951 funcallable-instances. (reported by Cyrus Harmon)
1952 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1953 consistent, even on internal alternate-metaclass objects.
1954 * bug fix: flush closure information collected by physical
1955 environment analysis prepass before the main pass. (bug reported
1957 * bug fix: compiler pack phase does not modify a hashtable, which is
1958 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1959 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1960 may be expanded. (reported by Alexander <malishev> on c.l.l)
1961 * bug fix: no more style-warnings when compiling code using LAST
1962 under high-SPEED low-SPACE settings. (reported by David Wallin
1964 * fixed some incompatibilities between SBCL's MOP and the MOP
1966 ** the METAOBJECT class is now implemented;
1967 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1968 STANDARD-OBJECT, as required;
1969 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1970 now compatible (as required by VALIDATE-SUPERCLASS); there
1971 remains a consistency requirement over the presence or absence
1972 of the FUNCTION class in the superclass list of finalized
1973 classes; see the manual for more details;
1974 ** the :AROUND method for COMPUTE-SLOTS on
1975 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1976 requested slot ordering.
1978 ** bug fix: parent thread now can be gc'ed even with a live
1980 ** bug fix: binding a special with PROGV to no value is not
1981 the same as that symbol not having been bound (thanks to
1983 ** bug fix: binding specials is thread safe (thanks to
1985 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1986 and SB-SPROF do not die with 'no handler for signal XX in
1987 interrupt_handle_now(..)' anymore
1988 ** bug fix: WITH-TIMEOUT works with multiple running threads
1989 * fixed some bugs revealed by Paul Dietz' test suite:
1990 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1991 the :method-class keyword argument.
1993 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1994 * new port: the Solaris operating system on x86 processors is now
1995 mostly supported, though some rough edges in the environment
1996 remain. (thanks to Daisuke Homma)
1997 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1998 space for its heap. (thanks to Thiemo Seufer)
1999 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2000 closures. (thanks to Thiemo Seufer)
2001 * minor incompatible change: eof selects abort in the debugger.
2002 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2003 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2005 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2006 deprecated, and will go away in a future revision of SBCL.
2007 * minor incompatible change: GC-ON and GC-OFF are no longer
2008 implemented with a counter, it does not matter how many times gc
2009 is switched on or off
2010 * bug fix: discriminating functions for generic function classes
2011 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2012 make invalid assumptions about method precedence order. (reported
2014 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2015 platforms. (thanks to Thiemo Seufer)
2016 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2017 * bug fix: correct pathname printing with printer escaping is on.
2018 (thanks to Kevin Reid)
2019 * bug fix: complex VOP definitions in "user-space" no longer trigger
2020 package locks. (reported by Zach Beane)
2021 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2022 for funcallable-instance functions, and is no different from
2024 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2025 characters in the current readtable. (reported by Nicholas Neuss)
2026 * bug fix: SUBTYPEP on various CONS types returns more a more
2027 accurate acknowledgment of its certainty.
2028 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2029 lists in some cases. This partially fixes bug 384.
2030 * flush all standard streams before prompting in the REPL and the
2032 * bug fix: signal handling and triggering gc do not conflict
2033 directly anymore, in particular a high frequency sb-sprof does
2034 not prevent gc from running
2035 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2036 approximation for timezone and DST information between the
2037 universal time epoch and the smallest negative 32-bit time_t.
2038 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2039 year 1899 so long as the encoded time is non-negative.
2040 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2041 the correct answer for non-constant rotate amounts when performing
2042 an inline 32-bit rotation.
2044 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2045 there is only one thread in the session
2046 ** bug fix: memory leak for streams created in one thread and
2047 written to in another
2048 ** bug fix: lockup when compiled with gcc4
2049 ** bug fix: race that allows the gc to be triggered when gc is
2051 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2052 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2054 ** bug fix: finished threads are gc'ed properly
2055 * fixed some bugs revealed by Paul Dietz' test suite:
2056 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2057 has arguments with a different set of applicable methods from
2058 the orignal arguments.
2059 ** The type error thrown by MAP now has a correct expected-type
2061 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2062 name a compiled function.
2063 ** Three MISC tests where a large bignum was improperly coerced to
2064 a float that couldn't represent that bignum during type
2065 derivation were fixed.
2066 ** SUBTYPEP can now handle types involving the negation of a
2067 list-form FUNCTION type.
2068 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2069 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2070 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2072 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2073 * New feature: Experimental support for bivalent streams: streams
2074 opened with :element-type :default now allow character and binary
2075 (unsigned-byte 8) I/O
2076 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2077 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2079 * bug fix: no more highly sporadic "couldn't check whether ~S is
2080 readable" when reading a stream and an interrupt hits in the middle
2081 of a select system call
2082 * compiler better recognizes complex arrays (reported by Eduardo
2084 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2085 for variables on SBCL built with linkage-tables. (reported by Luis
2087 * various error reporting improvements.
2088 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2089 (Thanks to Thiemo Seufer)
2090 * bug fix: nested reader invokations work correctly
2091 * bug fix: it is possible to have simultaneous references to foreign
2092 code and foreign data with the same name.
2094 ** added x86-64 support
2095 ** incompatible change: the threading api now works with thread
2096 objects instead of thread ids
2097 ** bug fix: threads are protected from signals and interruption when
2098 starting up or going down
2099 ** bug fix: a race where an exiting thread could lose its stack to gc
2100 ** bug fix: don't halt on infinite error in threads if possible
2101 ** fixed numerous gc deadlocks introduced in the pthread merge
2102 ** bug fix: fixed thread safety issues in read and print
2103 ** bug fix: debugger doesn't hang on session lock if interrupted at
2104 an inappropriate moment
2105 ** bug fix: run-program is now thread safe(r)
2106 ** bug fix: inner with-recursive-lock no longer releases the mutex
2107 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2108 * fixed some bugs revealed by Paul Dietz' test suite:
2109 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2110 EXPECTED-TYPE slots filled.
2111 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2113 ** MAKE-CONDITION accepts classes as type-designators.
2114 ** COMPILE may never return NIL.
2115 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2116 range before calling Unix time functions
2118 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2119 * numerous signal handling fixes to increase stability
2120 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2121 * minor incompatible change: we now correctly canonize default
2122 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2123 as per the MOP, rather than the historical (INITARG INITFUNCTION
2124 INITFORM). (reported by Bruno Haible)
2125 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2126 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2127 for more information.
2128 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2129 pathname is a directory pathname.
2130 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2131 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2133 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2134 :METACLASS argument in addition to a class name. (reported by
2135 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2136 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2137 (reported by Bruno Haible; patch from Gerd Moellmann)
2138 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2140 * bug fix: more cleanups to the floating point exception handling on
2141 x86-64 (thanks to James Knight)
2142 * bug fix: the compiler does not try to constant fold calls of
2143 COERCE and BIT-* functions when they return freshly constructed
2144 objects. (reported by Nikodemus Siivola and Paul Dietz)
2145 * optimization: improved the MIPS versions of generic (in the
2146 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2147 * optimization: direct conversion of (unsigned-byte 32) to floats on
2148 the PowerPC platform.
2149 * optimization: structure instances with raw slots now use less
2150 memory, and probably show better memory locality. (thanks to
2152 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2153 are treated as requests for stack allocation on the x86-64,
2154 Alpha-32, PPC and SPARC platforms.
2155 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2156 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2157 (thanks to Tony Martinez)
2159 ** gcing a dead thread can no longer lead to lockups
2160 ** threads block signals until they are set up properly
2161 ** errno is no longer shared by threads
2162 ** interrupt-thread restores the eflags register on x86
2163 ** fixed some lockups due to gc/thread interaction
2164 * fixed some bugs revealed by Paul Dietz' test suite:
2165 ** invalid dotted lists no longer raise a read error when
2166 *READ-SUPPRESS* is T
2167 ** signal an error if a symbol that names a declaration is used
2168 as the name of a type, or vice versa
2169 ** allow using the (declare (typespec var*)) abbreviation for
2170 (declare (type typespec var*)) with all type specifiers
2171 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2172 ** always return NIL from PPRINT-POP when OBJECT is NIL
2173 ** don't signal errors when pretty-printing malformed LABELS,
2174 FLET or MACROLET forms
2175 ** declarations in a DOLIST body are also in scope for the
2177 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2179 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2182 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2183 * fixed cross-compiler leakages that prevented building a 32-bit
2184 target with a 64-bit host compiler.
2185 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2186 opened with :IF-EXISTS :OVERWRITE.
2187 * fixed bug 281: error for an invalid qualifier in a short-form method
2188 combination method is not signalled until the faulty method is called.
2189 * bug fix: iteration variable type inferrer failed to deal with open
2190 intervals. (reported by Alan Shields)
2191 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2192 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2193 or more runtime options were provided to the sbcl binary.
2194 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2195 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2196 * optimization: there's now a fast-path for fixnum arguments in the
2197 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2198 * optimization: the code generated on x86-64 is more compact thanks
2199 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2200 * bug fix: floating-point exception handling now partly works on
2201 x86-64. (Thanks to James Knight)
2202 * improvement to the MIPS backend from Thiemo Seufer: C-style
2203 64-bit long long arguments and return values to alien functions
2205 * fixed some bugs revealed by Paul Dietz' test suite:
2206 ** the type-error signalled from WARN has a filled-in DATUM slot.
2207 ** the type-error required when a stream is not associated with
2208 a file has the stream as its datum.
2209 ** type-errors on single-floats on x86-64 no longer have
2210 :INVALID-OBJECT as the datum
2211 ** the type-errors signalled for invalid function names now have
2212 a correct expected type
2213 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2214 for structures defined with a :TYPE. Documentation strings for
2215 typed structures are no longer immediately discarded
2216 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2217 broadcast streams and synonym streams. FILE-LENGTH now also works
2218 on broadcast streams.
2220 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2221 * incompatible change: the --noprogrammer option, deprecated since
2222 version 0.7.5, has been removed. Please use the equivalent
2223 --disable-debugger option instead.
2224 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2226 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2227 inoperational for a while now) has been completely removed.
2228 * null lexical environments are now printed as #<NULL-LEXENV>,
2229 significantly reducing the amount of clutter in typical backtraces.
2230 * documentation on weak pointers, finalization, and after GC hooks
2231 has been added to the manual.
2232 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2233 as other specialized array types, is much faster. SUBSEQ and
2234 COPY-SEQ on such arrays have also been sped up.
2235 * optimization: EQL is now more efficient when at least other argument
2236 is known to be of type (OR FIXNUM (NOT NUMBER)).
2237 * fixed bug: the runtime is now less vulnerable to changes in the
2238 size of the SBCL object on OS X, and virtual memory is reserved for
2239 all spaces that need to be at a fixed address.
2240 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2241 * fixed bug: finalizers and after GC hooks that cause consing are now
2243 * fixed bug: compiler error messages and summaries are now printed to
2244 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2245 * fixed inference of the upper bound of an iteration variable.
2246 (reported by Rajat Datta).
2247 * fixed bug 211e: calling local functions with duplicated constant
2248 keyword argument no longer causes a bogus style warning about an
2250 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2251 ftype declaration to be disregarded. (reported by Dave Roberts)
2252 * fixed bug 373: caused by erronous compilation of references to alien
2253 variables in the runtime on ppc/darwin.
2254 * fixed bug 376: CONJUGATE type deriver.
2255 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2256 (reported by Baughn on #lisp)
2257 * a cross-compiler bug on non-x86 platforms has been identified and
2258 fixed. (thanks to Bruno Haible)
2259 * improvements to the MIPS runtime code for increased stability.
2260 (thanks to Thiemo Seufer)
2261 * increased the maximimum compact environment size to allow
2262 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2263 * partial workaround for bug 135: don't name the function we're
2264 calling for hairy cases of EVAL, so as not to accumulate one environment
2265 entry per call to EVAL. (reported by Kevin Reid)
2266 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2267 * optimization: type testing for non-vector arrays should be faster.
2268 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2270 * bug fix: setting 31st element of a bit vector to zero did not work
2272 * bug fix: redefining a class definition which failed due to a
2273 previous accessor / function clash now works (but see BUGS entry
2274 #380 for more problems in this area). (thanks to Zach Beane)
2275 * the long form of DEFINE-METHOD-COMBINATION disables method group
2276 checking when given a single method group with pattern *. (thanks
2278 * on x86 compiler supports stack allocation of results of simple
2279 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2280 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2281 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2282 * fixed some bugs related to Unicode integration:
2283 ** the restarts for recovering from input and output encoding
2284 errors only appear when there is in fact such an error to
2286 * fixed some bugs revealed by Paul Dietz' test suite:
2287 ** MISC.549 and similar: late transformation of unsafe type
2288 assertions into derived types caused unexpected code
2290 ** SCALE-FLOAT type deriver is less wrong.
2291 ** type derivers for EXP, LOG and similar functions compute result
2292 types for complex arguments better.
2293 ** (MISC.563) CONJUGATE type deriver works for very restricted
2295 ** out-of-line type testers for character strings are available.
2296 ** EQUAL compiler transform understands specialness of objects
2298 ** accessing double-floats stored on the stack now works on x86-64.
2299 ** debugger internals could sometimes create invalid lispobjs,
2300 resulting in GC crashes.
2301 ** MISC.548: type check weakening can convert required type into
2303 ** initialization forms for bindings are not in scope of free special
2306 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2307 * incompatible change: thread support for non-NPTL systems has
2308 been removed - locking is buggy and unreliable. A threaded
2309 SBCL build will now warn at startup and refuse to create
2310 new threads, unless futex support is detected in the kernel
2311 * incompatible change: the top level REPL now has only an ABORT
2312 restart associated with it, not TOPLEVEL and ABORT as it used to.
2313 TOP and TOPLEVEL are now available as debugger commands for
2314 returning to the top level.
2315 * incompatible change: forms evaluated in the REPL now use the
2316 global optimization policy.
2317 * incompatible change: user- and system-initialization files are
2318 no longer processed with LOAD, but by READ and EVAL; hence the
2319 global optimization policy, startup package, readtable, etc,
2321 * The .fasl file format number has been incremented because of
2322 various incompatible changes.
2323 * internal entry point details and argument counts no longer appear
2324 in backtraces unless explicitly requested by setting
2325 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2326 * built-in and standard functions no longer have names like "top
2327 level local call to FOO".
2328 * fixed bug 32: functions defined in non-null lexical environments
2329 now have more legible printed representation
2330 * fixed bug 33: functions defined in non-null lexical environemnts
2331 are now more amenable to inspection by INSPECT.
2332 * workaround for bug 354: XEPs no longer appear in backtraces unless
2333 explicitly requested.
2334 * fixed bug: receiving the signal which results from attempting to
2335 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2336 SIGBUS on other *BSDs) on architectures where the C stack is also
2337 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2338 to debugger confusion or wild instability. (reported by Cheuksan
2340 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2341 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2342 (reported by Lutz Euler)
2343 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2344 compiled code. (reported by Paul Dietz)
2345 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2346 specialized parameter to a method to something that is not TYPEP
2347 the specializer is now possible.
2348 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2349 face of package deletion.
2350 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2351 pathname. (reported by David Tolpin on c.l.l)
2352 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2353 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2354 STRING-STREAM and FILE-STREAM, respectively.
2355 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2356 than previously; in addition, its test suite is now run on build.
2357 (thanks to Luke Gorrie)
2358 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2359 * optimization: added a immediate representation for single-floats
2361 * fixed some bugs revealed by Paul Dietz' test suite:
2362 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2363 ** attempting to create a package with a colliding nickname causes
2364 correctable errors to be signalled.
2365 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2366 ** several x86-64 backend bugs related to sign-extension of immediate
2369 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2370 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2371 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2373 * fixed loading of multiply forward-referenced layouts.
2374 (thanks to Cheuksan Wang)
2375 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2376 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2377 (see COMPILE-FILE documentation for details of :PRINT option)
2378 * fixed bugs 19 and 317: fixed-format floating point printing is
2379 more accurate. This also fixes a bug reported by Adam Warner
2380 related to the ~@F format directive.
2381 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2383 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2384 dispatch table if the from-char is a dispatch macro character.
2385 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2386 by the wordsize no longer ignore the last word. (reported by Lutz
2388 * fixed bug in type checking of dynamic-extent variables. (reported
2390 * optimization: sequence traversal functions use their freedom to
2391 coerce function designators to functions.
2392 * optimization: code with many calls to CLOS methods specialized on
2393 CLOS classes has had redundant type checks removed.
2394 * optimization: added declarations to speed up operations that access
2395 the internal character database (for example STRING-UPCASE)
2396 * optimization: comparison operations between floats and sufficiently small
2397 fixnums no longer create extra rationals
2398 * fixed some bugs related to Unicode integration:
2399 ** portions of multibyte characters at the end of buffers for
2400 character-based file input are correctly transferred to the
2401 start of the buffer at the next read.
2402 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2403 passing it through to OPEN.
2404 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2405 argument given to internal calls to OPEN.
2406 ** the built-in comment readers (introduced by character sequences
2407 ";" and "#|") are more forgiving to encoding errors; they will
2408 STYLE-WARN and then attempt to resync the stream at a character
2409 boundary. (thanks to Teemu Kalvas)
2410 * fixed some bugs in the x86-64 port:
2411 ** Negative short int return values from c-calls are sign-extended
2413 ** The stack is aligned to 16-bytes for c-calls, as required by
2414 the ABI. (thanks to Cheuksan Wang)
2415 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2416 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2417 for enums. (thanks to Vincent Arkesteijn)
2418 ** Multiple small optimizations and bugfixes for floating point
2420 * fixed some bugs revealed by Paul Dietz' test suite:
2421 ** Space, Tab, Linefeed, Return and Page have the invalid
2422 secondary constituent character trait.
2423 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2425 ** WITH-INPUT-FROM-STRING should only update the index place on
2427 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2428 works more reliably.
2429 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2430 with one-dimensional arrays with fill pointers.
2431 ** TYPE-OF failed on a complex with an integer realpart and a
2433 ** compiler failure during type inference for the code of form
2434 (IF (EQL X (THE ...)) ...) (MISC.535).
2436 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2437 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2438 platform. The port supports 61-bit fixnums, large memory spaces
2439 and reloading shared object files.
2440 * enhancement: saving cores with foreign code loaded is now
2441 supported on ppc/Darwin in addition to the previously supported
2443 * enhancement: the statistical profiler now walks deeper into the
2444 call stack for more meaningful call-graphs and accrued time
2445 reports (x86/x86-64 only). It also now reports time spent in
2447 * enhancement: it is now possible to trace most individual methods
2448 of a generic function in addition to tracing the generic function
2450 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2452 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2453 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2454 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2455 produces an error. (thanks to Vincent Arkesteijn)
2456 * bug fix: NAMESTRING on pathnames with :WILD components in their
2457 directories works correctly. (thanks to Artem V. Andreev)
2458 * fixed bug 125: compiler preserves identity of closures. (reported
2460 * bug fixed: functions with &REST arguments sometimes failed with
2461 "Undefined function" when compiled with (DEBUG 3). (reported by
2463 * bug fix: overflow during compiling of setting element of a bit
2464 vector with constant index and value. (reported by Timmy Douglas)
2465 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2466 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2467 * on x86 compiler partially supports stack allocation of dynamic-extent
2469 * GO and RETURN-FROM do not check the extent of their exit points
2470 when compiled with SAFETY 0.
2471 * fixed some bugs related to Unicode integration:
2472 ** encoding and decoding errors are now much more robustly
2473 handled; it should now be possible to recover even from invalid
2474 input or output to the terminal. (thanks to Teemu Kalvas)
2475 ** provided a first cut at implementing STRING-TO-OCTETS and
2476 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2477 ** altered the SB-MD5 contributed module slightly, changing the
2478 interface just enough for it to be supportable for builds where
2479 lisp characters are not eight bits.
2480 * fixed some bugs revealed by Paul Dietz' test suite:
2481 ** the FORMATTER-generated functions for ~V[ conditionals require
2482 the correct number of arguments.
2483 ** READ-FROM-STRING returns the mandated second value when applied
2484 to displaced strings.
2485 ** the #\Rubout and #\Backspace characters are treated as invalid
2486 constituent characters by the tokenizer.
2488 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2489 * new feature: reloading changed shared object files with
2490 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2491 * new feature: references to foreign variables and functions
2492 can now be compiled and loaded before the corresponding shared
2493 object file is loaded, as long as the foreign definitions are
2494 available at runtime.
2495 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2496 supported. (thanks to Dan Debertin)
2497 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2498 just keywords. (thanks to Vincent Arkesteijn)
2499 * fixed bug #331: structure-class instances corresponding to
2500 DEFSTRUCT forms are now created eagerly.
2501 * fixed bug #345: backtraces from calls to undefined functions work
2502 on x86 as well. Related bug #61 is now also partially fixed on x86
2503 (backtraces from throws to unknown catch tags.)
2504 * bug fix: lambda-list parsing is now stricter vrt. order and number
2505 of lambda-list keywords.
2506 * bug fix: as specified by AMOP, an error is signalled if a
2507 class-option appears multiple times in a DEFCLASS form. (reported
2509 * bug fix: RANDOM can be compiled when the compiler derives the type
2510 of its numeric argument as a disjoint set of small integers.
2511 (reported by Paul Dietz)
2512 * bug fix: starting a core saved with shared objects loaded when
2513 those objects are not available no longer causes threaded SBCL to
2514 hang. (reported by Sean Ross)
2515 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2517 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2518 argument, which must always be NIL. (reported by Kalle Niemitalo)
2519 * bug fix: printing 1.0d+23 no longer results in an error.
2520 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2521 * bug fix: structure slot setters preserve evaluation order. (thanks
2523 * fixed some bugs related to Unicode integration:
2524 ** RUN-PROGRAM can allow its child to take input from a Lisp
2525 stream. (reported by Stefan Scholl)
2526 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2527 locales. (reported by Ken Causey)
2528 * fixed some bugs revealed by Paul Dietz' test suite:
2529 ** INCF, DECF and REMF evaluate their place form as specified in
2531 ** FORMATTER expands ~{ ~} iteration directives with V or #
2532 parameters correctly.
2533 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2534 consequent uses no arguments correctly.
2535 ** the system has a partial understanding of the (COMPLEX RATIO)
2537 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2540 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2541 * new feature: a build-time option (controlled by the :SB-UNICODE
2542 keyword feature, enabled by default) for building the system with
2543 support for the entire 21-bit character space defined by the
2545 * new feature: the system now has rudimentary external-format
2546 support; the primary user-visible change at this time is that
2547 characters with the high bit set (such as lower-case-e-acute) will
2548 print correctly to a terminal in a UTF-8 environment.
2549 * minor incompatible change: BASE-CHAR no longer names a class;
2550 however, CHARACTER continues to do so, as required by ANSI.
2551 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2552 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2553 has been moved to the SB-EXT package (temporarily re-exported from
2555 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2556 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2558 * fixed bug #351: better error-handlind and reporting for malformed
2560 * fixed bug #350: bignum-printing is now more memory-efficient,
2561 allowing printing of very large bignums, eg. (expt 2 10000000).
2562 (reported by Bruno Haible)
2563 * fixed bug #302: better primitive-type selection for intersection
2565 * fixed bug #308: non-graphic characters now all have names, as
2566 required. (reported by Bruno Haible)
2567 * bug fix: redefining a class with different superclasses now correctly
2568 removes it from the direct-subclasses of its previous superclasses.
2569 (reported by David Morse)
2570 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2571 new value now works. (reported by Bruno Haible)
2572 * bug fix: correct canonicalization of multiple non-standard slot
2573 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2574 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2575 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2576 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2577 now exists, an signals an error.
2578 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2579 during macroexpansion for non-iteration variables as well. (reported
2580 by Bruno Haible for CMUCL)
2581 * bug fix: Cyclic structures and unprintable objects in compiler
2582 messages no longer cause errors. (reported by Bruno Haible)
2583 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2584 and READ-FROM-STRING all now return a primary value of NIL if
2585 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2586 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2587 (reported by Bruno Haible for CMUCL)
2588 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2589 do not designate a condition. (reported by Bruno Haible for
2591 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2592 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2593 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2594 permitting resolution in favour of any of the conflicting symbols.
2595 (reported by Bruno Haible for CMUCL)
2596 * bug fix: EQUAL compiler optimizations is less aggressive on
2597 strings which can potentially compare true despite having distinct
2598 specialized array element types.
2599 * bug fix: unit enumerations can be defined without dividing by
2600 zero. (thanks to Vincent Arkesteijn)
2601 * FORMAT compile-time argument count checking has been enhanced.
2602 (report from Bruno Haible for CMUCL)
2603 * a partial workaround for the bug 262: the compiler does not try to
2604 inline-expand a local function doing RETURN-FROM from a deleted
2605 BLOCK. (thanks to Peter Denno for the bug report and to David
2606 Wragg for the simple test case)
2607 * fixed some bugs revealed by Paul Dietz' test suite:
2608 ** RENAME-PACKAGE allows all package designators as new package
2610 ** constraint propagation and lambda variable substitution are
2611 more cautious in dealing with partially deleted code.
2612 ** compiler sometimes lost reoptimization passes.
2613 ** CERROR, given a condition as condition designator, passes its
2614 remaining arguments to the continue format control without
2616 ** Case-altering FORMAT directives work correctly on non-ASCII
2618 ** The REAL type specifier handles bounds outside the floating
2619 point ranges without signalling FLOATING-POINT-OVERFLOW.
2620 ** Functions with IR1-transformations can create intercomponent
2621 references to global functions.
2622 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2624 ** FORMAT ~R treats a nil value for its first parameter correctly.
2626 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2627 * enhancement: saving cores with foreign code loaded is now
2628 supported on x86/NetBSD and sparc/Linux in addition to the previously
2629 supported platforms.
2630 * bug fix: on some platforms repeated installations caused multiple
2631 copies of HTML documentation to be installed -- should not happen
2632 any more. (reported by Stefan Scholl)
2633 * bug fix: parsing self-recursive alien record types multiple times
2634 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2635 original patch by Helmut Eller for CMUCL)
2636 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2637 (thanks to Richard Kreuter)
2638 * bug fix: defining classes whose accessors are methods on existing
2639 generic functions in other (locked) packages no longer signals
2640 bogus package lock violations. (reported by François-René Rideau)
2641 * bug fix: special variables as DEFMETHOD parameters no longer have
2642 associated bogus type declarations. (reported by David Wragg and
2644 * bug fix: read-write consistency on streams of element-type
2645 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2646 * bug fix: redefiniton of the only method of a generic function with
2647 no DEFGENERIC no longer emits a full WARNING. In addition,
2648 redefinition of generic functions with no DEFGENERIC to an
2649 incompatible lambda list now signals an error. (thanks to Zach
2651 * bug fix: DEFGENERIC now works even when there's a function of the
2652 same name in an enclosing lexical environment. (thanks to Zach
2654 * fixed compiler failure, caused by instrumenting code during
2655 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2656 * optimization: added loop analysis and improved register allocation
2657 * fixed some bugs revealed by Paul Dietz' test suite:
2658 ** POSITION on displaced vectors with non-zero displacement
2659 returns the right answer.
2660 ** (SIMPLE-STRING) is a valid type specifier for sequence
2662 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2664 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2665 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2667 ** The justification version of the FORMAT ~< directive treats
2668 non-zero minpad parameter correctly.
2670 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2671 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2672 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2673 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2674 the supported interface.
2675 * new feature: Single-stepping of code compiled with DEBUG 2 or
2676 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2677 * new feature: saving cores with foreign code loaded is now
2678 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2679 Timothy Moore's work for CMUCL)
2680 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2681 parameters to * instead of NIL if no initform is supplied.
2682 (reported by Johan Bockgaard)
2683 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2684 correctly when FUNCALL appears as the car of the form. Note:
2685 despite this FUNCALL forms are not currently subject to
2686 compiler-macro expansion. (port of Raymond Toy's fix for the
2687 same from CMUCL, reported by Johan Bockgaard)
2688 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2689 (thanks for Teemu Kalvas)
2690 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2691 case instead of terminating the iteration (thanks for Julian
2692 Squires, Sean Champ and Raymond Toy)
2693 * bug fix: incorrect expansion of defgeneric that caused a style
2694 warning. (thanks for Zach Beane)
2695 * bug fix: slot accessor effective method computation works properly
2696 for classes with multiple non-standard applicable methods on
2697 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2698 * on x86 compiler supports stack allocation of results of LIST and
2699 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2700 CMUCL implementation by Gerd Moellmann)
2701 * fixed some bugs revealed by Paul Dietz' test suite:
2702 ** FORMAT strings with both the ~<~:;~> form of the justification
2703 directive and pretty-printing directives cause an error.
2705 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2706 * incompatible change: the internal functions
2707 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2708 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2709 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2710 instead of the old functions.
2711 * new feature: on platforms where "dladdr" is available foreign
2712 function names now appear in backtraces. (based on Helmut Eller's
2714 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2715 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2717 * documentation: ASDF manual is now distributed with SBCL.
2718 * bug fix: SBCL can now load its contributed modules with REQUIRE
2719 even if the system-provided entries have been removed from
2720 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2722 * bug fix: backtraces involving undefined functions or assembly
2723 routines are more informative. (thanks to Brian Downing)
2724 * bug fix: mutually referent alien structures now work correctly.
2725 (reported by Rick Taube)
2726 * bug fix: structures defined by WITH-ALIEN can be referred to
2727 within other definitions in the same WITH-ALIEN.
2728 * bug fix: division operators (MOD, TRUNCATE and the like) with
2729 constant zero divisors and integer dividends no longer generate
2731 * bug fix: provide default methods for INPUT-STREAM-P and
2732 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2733 * bug fix: improve the detection and resolution of MOP metacycles
2734 (where effective method computation depends on the generic function
2735 having its effective method computed). (reported by Bruno Haible)
2736 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2737 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2738 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2739 * bug fix: pathnames with relative directory components can be
2740 represented relative to default pathnames.
2741 * optimization: in taking the GCD of bignums, reduce the two bignums
2742 to approximately the same size (using Euclid's algorithm) before
2743 applying the more sophisticated binary GCD. (thanks to Juho
2745 * optimization: COUNT on bitvectors now operates word-at-a-time.
2746 * optimization: ASH with a positive, but not necessarily constant,
2747 (leftwards) shift, when in a modular context, is compiled to a
2749 * fixed some bugs revealed by Paul Dietz' test suite:
2750 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2751 if the corresponding argument is NIL.
2752 ** FORMAT directives accepting a minpad parameter treat negative
2754 ** literal commas as character parameters to FORMAT directives are
2756 ** literal spaces directly after ~<Newline> directives within a
2757 format-logical-block (~:< ~@:>) do not induce :FILL-style
2758 conditional newlines.
2759 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2760 as specified: it no longer includes conditional newlines).
2761 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2763 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2764 :PER-LINE-PREFIX argument does not evaluate to a string.
2766 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2767 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2768 the manual for details; for now, package locks can be disabled by
2769 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2770 if no major problems are found then it is likely that they will be
2771 compiled in unconditionally.
2772 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2773 unsupported operators on all platforms. To load a shared library
2774 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2775 object file, link it into a shared library outside of SBCL and
2776 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2778 * bug workaround: ROOM T and the GC were not working together
2779 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2780 reporting facility aren't preserved. That reporting has been
2781 disabled, so now until and unless someone figures out how to make it
2782 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2783 * minor incompatible change: as threatened around sbcl-0.8.0, the
2784 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2785 The symbols are also exported from SB-PCL for backwards
2786 compatibility, but more so than before SB-PCL should be treated as
2787 an implementation-internal package.
2788 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2790 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2791 It is known as of this release not to work on the Alpha, however.
2792 * fixed bug #167: errors signalled due to illegal syntax in method
2793 bodies are now more legible.
2794 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2795 designators and can hence be used with TYPEP.
2796 * fixed bug #333: CHECK-TYPE now ensures that the type error
2797 signalled, if any, has the right object to be accessed by
2798 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2799 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2800 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2802 * fixed bug #334: programmatic addition of slots using specialized
2803 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2804 and :ALLOCATION :CLASS slots.
2805 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2806 float exponents. (rereported by Peter Seibel)
2807 * fixed a bug: #\Space (and other whitespace characters) are no
2808 longer considered to be macro characters in standard syntax by
2809 GET-MACRO-CHARACTER.
2810 * fixed bug: initialization of condition class metaobjects no longer
2811 causes an instance of the condition to be created. (reported by
2813 * fixed bug: it is now possible to have slots such that
2814 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2815 description is neither :INSTANCE nor :CLASS.
2816 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2817 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2818 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2819 non-standard SLOT-DEFINITION-ALLOCATION values.
2820 * fixed bugs: various race conditions handling exiting threads.
2821 CL-PPCRE's thread torture test now passes.
2822 * fixed arguably-a-bug: GC time proportional to number of threads in
2823 system even when most of them are idle
2824 * optimization: improved performance of BIT and SBIT on bit-vectors.
2825 * .fasl file incompatibility: The fasl file version number has
2826 been incremented because of changes associated with package locks.
2828 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2829 * minor incompatible change: the system no longer provides
2830 optimization hints (conditions which are TYPEP
2831 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2832 mode; these hints are still emitted when higher SPEED optimization
2834 * new contrib module: a sampling profiler (profiling by statistical
2835 sampling, rather than by instrumenting functions) is available as
2836 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2837 * the behaviour of the standard function ED is now customizeable by
2838 third parties through a hook variable: see ED's documentation
2839 string for information on the protocol.
2840 * the compiler no longer emits efficiency notes for (FUNCALL X)
2841 when the type of X is uncertain under default optimization
2843 * fixed bug 276: mutating a binding of a specialized parameter to a
2844 method to something that is not TYPEP the specializer is now
2846 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2847 exhibit the required behaviour on the x86 platform. (thanks to
2848 Peter van Eynde, Eric Marsden and Bruno Haible)
2849 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2850 even for difficult arguments. (reported by Peter Graves)
2851 * fixed bug 141a: the backquote printer now descends quoted
2853 * fixed another bug in backquote printing: no more destructive
2854 modification of the form's list structure. (reported by Brian
2856 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2857 move between its address being taken and the call to
2858 interrupt_thread, fixing a crashing race condition.
2859 * the SB-POSIX contrib implementation has been adjusted so that it
2860 no longer exhibits ridiculously poor performance when constructing
2861 instances corresponding to C structs.
2863 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2864 * minor incompatible change: the sb-grovel contrib now treats C
2865 structures as alien (in the sense of SB-ALIEN) objects rather than
2866 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2867 has implications for memory management of client code
2868 (sb-grovel-returned objects must now be manually managed) and for
2869 type safety (alien objects now have full types).
2870 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2871 used to control emission of compiler diagnostics, rather than the
2872 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2873 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2874 quality should be considered deprecated.
2875 * install.sh now installs the user manual as well
2876 * (not quite a new documentable feature, but worth considering in
2877 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2878 beginnings of a semantically meaningful condition hierarchy is
2879 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2881 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2882 designator as the defaults argument.
2883 * fixed bug: Displaced arrays whose displaced-to array has become
2884 too small now cause ARRAY-DIMENSION to signal an error, providing
2885 for safer bounds-checking. (reported by Bruno Haible)
2886 * fixed bug: DEFCLASS slot definitions with identical :READER and
2887 :WRITER names now signal a reasonable error. (reported by Thomas
2889 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2891 * fixed bug: Invalid slot specification errors now print correctly.
2892 (thanks to Zach Beane)
2893 * fixed bug 320: Shared to local slot value transfers in class
2894 redefinitions now happen corrently from superclasses as
2895 well. (reported by Bruno Haible)
2896 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2898 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2899 improper lists correctly. (reported by Bruno Haible)
2900 * fixed bug 313: source-transform for <fun-name> was erroneously
2901 applied to a call of a value of a variable with name <fun-name>.
2902 (reported by Antonio Menezes Leitao)
2903 * fixed bug 307: The obsolete instance protocol ensures that
2904 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2905 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2906 remove dead unknown-values globs from the middle of the stack.
2907 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2908 easier to resume long computations after using *BREAK-ON-SIGNALS*
2909 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2910 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2911 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2912 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2913 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2914 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2916 * fixed a (fairly theoretical) bug in string printing: if
2917 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2918 does not have array-element-type equal to the most general string
2920 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2921 function name. (thanks to Nikodemus Siivola)
2922 * fixed bug: compile-time format string checker failed on
2923 non-closed ~{. (reported by Thomas F Burdick)
2924 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2925 don't warn on legal loop code involving more than one aggregate
2926 boolean. (thanks to Nikodemus Siivola)
2927 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2928 in keyword position to MAKE-PACKAGE was not being reported as
2930 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2931 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2933 * fixed bugs 280 and 312: the checking for multiple definitions in a
2934 file is less likely to become confused by uses of inline
2936 * fixed bug: the #S reader macro performs the keyword coercion
2937 specified for slot names. (reported by Kalle Niemitalo)
2938 * fixed bug: lambda lists may contain symbols whose names start with
2939 & but are not lambda-list-keywords; their occurrence triggers a
2941 * fixed bug 321: define-method-combination argument lambda lists do
2942 not cause invalid code to be generated when &optional or &aux
2943 variables have default values. (reported by Bruno Haible)
2944 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2945 have CLOS classes; this appears also to have fixed reported
2946 instability in stack exhaustion detection.
2947 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2948 MUFFLE-WARNING when no associated restart is present is now
2950 * optimization: rearranged the expansion of various defining macros
2951 so that each expands into only one top-level form in a
2952 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2954 * optimization: used a previously little-used slot in symbols to
2955 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2957 * fixed some bugs revealed by Paul Dietz' test suite:
2958 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2960 ** Fixed an optimization bug related to inheritance of initforms
2961 from local to shared slots.
2962 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2963 ** CAST optimizer forgot to flush argument derived type.
2964 ** print/read consistency on floats is now orders of magnitude
2965 more likely. (thanks also to Bruno Haible for a similar report
2967 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2968 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2969 for objects of type REAL. Make it so.
2970 ** SXHASH is specified (infelicitously) to respect similarity,
2971 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2972 it so. (thanks to Markus Ziegler)
2973 ** on the Alpha, the compiler succeeds in compiling functions
2974 returning a known number of arguments greater than 63.
2975 ** fixed handling of invalid NIL arguments in keyword position
2977 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2979 ** provided a readably-printable representation for RANDOM-STATE
2981 ** ensured that pathnames, where they have a namestring, always
2982 print using #P"..." syntax.
2984 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2985 * Support for the forthcoming 2.0 version of the NetBSD kernel
2986 running on x86 hardware has been added. (thanks to Perry
2987 E. Metzger most immediately, and others for their past work)
2988 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2989 current release version; SBCL's OpenBSD support had been broken
2990 since about the time of OpenBSD's switch to ELF binary format.)
2991 * [placeholder for DX summary]
2992 ** user code with &REST lists declared dynamic-extent, under high
2993 speed or space and low safety and debug optimization policy.
2994 * The manual has been converted to Texinfo format and the debugger
2995 chapter from the cmucl manual has been added.
2996 * A facility has been added to extract documentation strings from
2997 sbcl and store them as Texinfo-formatted snippets for inclusion in
2998 the manual (via Texinfo's @include directive)
2999 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3000 the test case to Dave Roberts)
3001 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3002 pointers. (reported by Sean Ross)
3003 * bug fix: PROFILE output is printed nicely even for large numerical
3004 values. (thanks to Zach Beane)
3005 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3006 greater than 32 handle EOF correctly.
3007 * bug fix: on X86 an immediate argument of the IMUL instruction is
3008 correctly printed in disassembly. (thanks to Lutz Euler)
3009 * bug fix: class slots in redefined classes preserve their old
3010 values. (thanks to Bruno Haible and Nikodemus Siivola)
3011 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3012 succeeds. (reported by Marco Baringer)
3013 * fixed some bugs revealed by Paul Dietz' test suite:
3014 ** READ-SEQUENCE now works on ECHO-STREAMs.
3015 ** RATIONALIZE works more according to its specification. (thanks
3018 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3019 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3020 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3021 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3022 should matter to you only if you rebind the printer control
3023 variables and then find you want different bindings in the
3024 debugger than in the ordinary execution of your program.)
3025 * The runtime build system has been tweaked to support building
3026 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3027 assembler and linker. (thanks to Nikodemus Siivola)
3028 * Unbound, undefined, undeclared variables now trigger full
3029 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3030 more often programmer error than deliberate exploitation of undefined
3032 * optimization: the hash algorithm for strings has changed to one
3033 that is less vulnerable to spurious collisions. (thanks to Juho
3035 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3036 needless bounds checking. (thanks to Juho Snellman)
3037 * optimization: implemented multiplication as a modular
3038 (UNSIGNED-BYTE 32) operation on the PPC backend.
3039 * fixed some bugs revealed by Paul Dietz' test suite:
3040 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3042 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3043 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3044 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3046 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3048 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3050 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3051 their output stream on EOF from read.
3052 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3053 have been read to end-of-file.
3054 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3056 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3057 description of determination of which consecutive characters
3059 ** Printing the "Space" character with escaping on now yields "#\\ ",
3060 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3061 ** Reading floating-point numbers with *READ-BASE* set to a number
3062 less than 10 works correctly.
3063 ** Reading floating-point numbers with *READ-BASE* set to a number
3064 more than 10 works correctly.
3065 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3066 the readtable currently in effect.
3068 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3069 * minor incompatible change: parsing of namestrings on a physical
3070 (Unix) host has changed; numbers after the final #\. in a
3071 namestring are no longer interpreted as a version field. This is
3072 intented to be largely invisible to the user, except that the
3073 meaning of the namestring "*.*.*" has changed: it now refers to a
3074 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3075 should usually be replaced by
3076 (make-pathname :name :wild :type :wild :version :wild)
3077 with the added benefit that this is more likely to be portable.
3078 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3079 option to OPEN now signals an error if the file being opened
3080 exists; this may have an impact on existing code.
3081 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3082 signals received, on the PowerPC platforms (both Linux and
3083 Darwin). (thanks to Pierre Mai for pointing out the location of
3085 * several fixes on OS X: The system now builds and runs cleanly on
3086 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3087 (thanks to Brian Mastenbrook)
3088 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3089 second-resolution: integer multiples of 1/3600 between -24 and 24.
3090 (thanks to Vincent Arkesteijn)
3091 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3092 type when called with 1 argument; PEEK-CHAR checked type of
3093 PEEK-TYPE only after having read first character from a
3094 stream. (reported by Peter Graves)
3095 * bug fix: the garbage collector now has much better locality
3096 behaviour, and in particular no longer treats all memory as being
3097 exhausted when many small objects point to each other in a deeply
3099 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3100 recognized as being TYPEP their class.
3101 * bug fix: the PUSHNEW documentation string has been corrected.
3102 (thanks to Vincent Arkesteijn)
3103 * bug fix: defaulting of the value for the last of an atypically
3104 large number of multiple values being bound was not being
3105 performed correctly on the Alpha or PPC platforms
3106 * optimization: implemented multiplication as a modular
3107 (UNSIGNED-BYTE 32) operation on the x86 backend.
3108 * optimization: SEARCH on simple-base-strings can now be open-coded.
3109 (see also contrib/compiler-extras.lisp for inspiration for
3110 teaching the compiler about the Boyer-Moore algorithm).
3111 * value, returned by MAX (and MIN) called with several EQUALP, but
3112 not EQL, arguments now does not depend on compiler settings.
3113 * fixed some bugs revealed by Paul Dietz' test suite:
3114 ** in stack analysis liveness information is propagated from
3115 non-local entry points.
3116 ** pathwise CAST removing failed when the CAST node did not start
3118 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3119 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3121 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3122 host is already defined.
3123 ** RENAME-FILE works on streams instead of signalling an internal
3125 ** PEEK-CHAR uses the current readtable when determining whether
3126 or not a character is whitespace.
3127 ** MERGE-PATHNAMES handles the case when the pathname does not
3128 specify a name while the default-pathname specifies a version.
3129 ** Pathnames now stand a better chance of respecting print/read
3131 ** Attempting to use standardized file system operators with a
3132 pathname with invalid :DIRECTORY components signals a
3134 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3136 ** DIRECTORY on logical pathnames is more correct.
3137 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3138 signal a TYPE-ERROR if their argument is not a stream.
3139 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3140 designator argument does not designate a stream.
3141 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3142 examining the synonym.
3143 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3145 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3146 element-type larger than ([UN]SIGNED-BYTE 32).
3148 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3149 * When built with the :SB-FUTEX feature, threaded builds now take
3150 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3151 for faster/more reliable mutex and condition variable support.
3152 * Incompatible change (but one you probably shouldn't have been using
3153 anyway): the interface and code for arbitrating between multiple
3154 threads in the same user session has been redesigned.
3155 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3156 error when called without an explicit environment argument.
3157 (thanks to Nikodemus Siivola)
3158 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3159 confused about their position. (thanks to Adam Warner and Gerd
3161 * bug fix: Pretty printing backquoted forms with unquotations in the
3162 argument list position of various code constructs such as LAMBDA
3163 now works correctly. (reported by Paul Dietz)
3164 * bug fix: Pretty printing unquotations no longer loses all
3165 stream position information.
3166 * optimization: performance of string output streams is now less
3167 poor for multiple small sequence writes.
3168 * optimization: performance of CSUBTYPEP in the presence of complex
3169 expressions involving CONS and NOT many times has been improved.
3170 (reported by Paul Dietz)
3171 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3173 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3174 streams for the REPL, for the debugger, and so on. (thanks to
3176 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3177 * fixed some bugs revealed by Paul Dietz' test suite:
3178 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3179 is ignored if it is too small, rather than propagating through
3180 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3181 ** extremely complex negations of CONS types were not being
3182 sufficiently canonicalized, leading to inconsistencies in
3184 ** VALUES tranformer lost derived type.
3186 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3187 * fixed a bootstrapping bug: the build process no longer assumes
3188 that the various BOOLE-related constants have the same value in
3189 host and target lisps. (noted by Paul Dietz' test suite on an
3190 SBCL binary built from CLISP)
3191 * The system can now be dynamically linked on the MIPS platform,
3192 which enables dynamic loading of foreign code from Lisp. (thanks
3193 to Ralf Baechle for discussions on the MIPS ABI)
3194 * The system now records debugging information for its own source
3195 files in a filesystem-position-independent manner, relative to
3196 the "SYS" logical host.
3197 * fixed a compiler bug: MV-LET convertion did not check references
3198 to the "max args" entry point. (reported by Brian Downing)
3199 * tweaked disassembly notes to be less confident about proclaiming
3200 some instruction as an LRA. (thanks to Brian Downing)
3201 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3202 now each have their own history, command character, and other
3203 characteristics. (thanks to David Lichteblau)
3204 * fixed some bugs revealed by Paul Dietz' test suite:
3205 ** compiler failure in compiling LOGAND expressions including a
3207 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3208 shift greater than 32.
3209 ** FLUSH-DEST did not mark blocks for type check regeneration.
3210 ** HANDLER-CASE failed to accept declarations in handler clauses
3211 in some circumstances.
3213 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3214 * New code in contrib/sb-introspect (still probably not entirely
3215 stable yet) provides some support for smart Lisp development
3216 environments like SLIME.
3217 * The conditions signalled for errors occurring when loading .fasl
3218 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3219 in a way which should help ASDF recover gracefully.
3220 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3221 stuff has been cleaned up. If you code contrib/ stuff, this might
3222 affect you, and you can look at contrib/README, contrib/STANDARDS,
3223 and/or the 0.8.4.27 diff to check.
3224 * In full calls the compiler now does not generate checks for declared
3225 argument types for all arguments.
3226 * various threading fixes
3227 ** and some experimental patches which didn't make it into
3228 the main tree for this release, but which are shipped in
3229 contrib/experimental-thread.patch as a possible fix for some
3230 failures (deadlock, spinning...) in GC-intensive multithreaded
3232 * fixed PPC build problem (source code incompatibility of different
3233 library versions): added offsetof() hackery which attempts to divine
3234 where glibc maintainers put uc_mcontext today
3235 * fixed bug 282: compiler does not trust type assertions while passing
3236 arguments to a full call.
3237 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3238 &OPTIONAL VALUES type parameter.
3239 * fix bug 214: algorithm for noting rejected templates is now more
3240 similar to that of template seletion. (also reported by rydis on
3242 * fixed bug 141b: printing backquoted information readably and prettily
3243 inserts a space where necessary.
3244 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3245 (CHARACTER 10) are now reported as errors, rather than propagated
3246 as unknown types. (reported by piso on #lisp)
3247 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3248 with values NIL and :ERROR. (thanks to Milan Zamazal)
3249 * fixed bug 191c: CLOS now does proper keyword argument checking as
3250 described in CLHS 7.6.5 and 7.6.5.1.
3251 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3252 longer raise an error; further, using a list as a for-as-arithmetic
3253 counter now raises a meaningful error.
3254 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3255 now understood by sequence creation functions such as MAKE-SEQUENCE
3257 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3258 a STRING-INPUT-STREAM.
3259 * compiler enhancement: SIGNUM is now better able to derive the type
3261 * type declarations inside WITH-SLOTS are checked. (reported by
3263 * fixed some bugs revealed by Paul Dietz' test suite:
3264 ** incorrect optimization of TRUNCATE for a positive first
3265 argument and negative second.
3266 ** compiler failure in let-convertion during flushing dead code.
3267 ** compiler failure while deriving type of TRUNCATE on an
3268 interval, containing 0.
3269 ** ASH of a negative bignum by a negative bignum count now returns
3271 ** intersection of CONS types now canonicalizes properly, fixing
3272 inconsistencies in SUBTYPEP.
3274 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3275 * incompatible change: The --disable-debugger command line
3276 option now clobbers the debugger at a more fundamental
3277 level, by redefining #'INVOKE-DEBUGGER instead of by
3278 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3279 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3280 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3281 enter the debugger REPL and then suffer recursive errors
3282 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3283 while under the new system, BREAK in --disable-debugger mode
3284 terminates the system just as an unhandled error would.
3285 * fixed compiler performance when processing loops with a step >1;
3286 * bug fix: DOCUMENTATION now retrieves generic function
3287 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3288 support has been systematized, and now supports the methods
3289 specified by ANSI, along with a default method and a method for
3290 slot documentation. (reported by Nathan Froyd)
3291 * bug fix: effective methods associated with a generic function are
3292 no longer cached over a change of that generic function's method
3293 combination. (reported by Andreas Fuchs)
3294 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3295 names a non-existent directory. (thanks to Andreas Fuchs)
3296 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3297 the PPC platform, lead to stack corruption; this has been fixed.
3298 (reported by Rainer Joswig)
3299 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3300 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3301 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3302 arithmetic in general, is now much more reliable on the PPC
3304 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3305 platform now returns the right answer.
3306 * optimization: restored some effective method precomputation in
3307 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3308 precomputation is now tunable.
3309 * optimization: compiler-internal data structure use has been
3310 reviewed, and changes have been made that should improve the
3311 performance of the compiler by about 20%.
3312 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3313 simple-base-strings and simple-bit-vectors is improved.
3314 * optimization: the optimization of 32-bit logical and arithmetic
3315 functions introduced in version 0.8.3 on the x86 has been
3316 implemented on the mips, ppc and sparc platforms; an
3317 implementation of the same facility, but for 64-bit arithmetic,
3318 has been added for the alpha.
3319 * microoptimization: the compiler is better able to make use of the
3320 x86 LEA instruction for multiplication by constants.
3321 * bug fix: in some situations compiler did not report usage of
3322 generic arithmetic in (SPEED 3) policy.
3323 * bug 145b fix: compiler used wrong type specifier while converting
3324 MEMBER-types to numeric.
3325 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3327 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3328 index argument now works properly on the Alpha platform.
3329 * bug fix: floating point exception treatment on the Alpha platform
3331 * bug fix: FILE-POSITION works much better on string input and
3332 output streams. (thanks to Nikodemus Siivola)
3333 * bug fix: many threading/garbage collection symptoms sorted.
3334 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3335 might be pseudo-atomic.
3336 * internal change: Stopping for GC is now done with signals not
3337 ptrace. GC is now done in whichever thread wanted it, instead of
3339 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3341 * bug fix: result form in DO is not contained in the implicit
3343 * incompatible change: ICR structure is changed; the value part of
3344 CONTINUATION is now called LVAR; corresponding functions are
3345 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3346 * added type deriver for ISQRT (thanks to Robert E. Brown).
3347 * bug fix: better support for loading from the command line when an
3348 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3350 * fixed some bugs revealed by Paul Dietz' test suite:
3351 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3352 ** ROUND and FROUND now give the right answer when given very
3353 small float arguments.
3354 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3356 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3357 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3358 ** LCM should return a non-negative integer.
3359 ** PARSE-INTEGER returned the index of a terminator instead of the
3360 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3361 ** PARSE-INTEGER returned an incorrect index being applied to a
3363 ** LCM with two arguments of 0 returns 0 rather than signalling
3365 ** unsigned addition of a 32-bit constant with the high bit set no
3366 longer causes an internal compiler error on the x86.
3367 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3368 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3369 with negative last argument.
3370 ** byte specifiers with zero size and position no longer cause
3371 an error during type derivation.
3372 ** bignum multiplication on the Alpha platform now returns the
3374 * porting: The system now builds on SuSE AMD64, although it still
3375 generates a 32-bit binary.
3376 * .fasl file incompatibility: The fasl file version number has
3377 been incremented (because of the changes to internal compiler
3378 data structures referred to above).
3380 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3381 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3382 more accurately, on the Darwin kernel running on PowerPC hardware.
3383 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3384 * Compiler code deletion notes now signal a condition of type
3385 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3386 an associated MUFFLE-WARNING restart.
3387 * The compiler now performs limited argument count validation of
3388 constant format strings in FORMAT, and where appropriate in ERROR,
3389 CERROR and WARN. (thanks to Gerd Moellmann)
3390 * New ASDF-INSTALL contrib can be used for automatic download and
3391 installation of third-party Lisp code from CCLAN or other sites
3393 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3394 which forces another thread to execute a function supplied by the
3396 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3397 now accept and act upon their :ELEMENT-TYPE keyword argument.
3398 (reported by Martin Atzmueller, Edi Weitz)
3399 * bug fix: FILE-POSITION now accepts position designators up to
3400 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3401 is the greater. (thanks to Patrik Nordebo)
3402 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3403 Kalle Olavi Niemitalo)
3404 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3405 printable. (reported by Eric Marsden)
3406 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3407 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3408 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3409 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3410 (thanks to Stig Sandoe)
3411 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3412 UNREAD-CHAR now correctly includes the unread character in the
3413 target sequence. (thanks to Gerd Moellmann)
3414 * bug fix in threaded builds: the system can now be suspended and
3415 resumed by shell job control with minimal disruption.
3416 * bug fixes in times and timezones >2038AD
3417 * better handling of "where is GNU make?" problem in build scripts
3418 (thanks to Nikodemus Siivola)
3419 * new optimization: inside a named function any reference to a
3420 function with the same name is considered to be a self-reference;
3421 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3422 optimization quality.
3423 * new optimization on x86: logical functions and + now have
3424 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3425 used when the result is truncated to 32 bits.
3426 * VALUES declaration is partially enabled.
3427 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3428 * fixed some bugs revealed by Paul Dietz' test suite:
3429 ** The system now obeys the constraint imposed by
3430 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3431 types form a lattice under type intersection.
3432 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3433 ** ASSOC now ignores NIL elements in an alist.
3434 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3435 and (1+ MOST-POSITIVE-FIXNUM) answers.
3436 ** The addition of a method with invalid qualifiers to a generic
3437 function does not cause an error to be signalled immediately;
3438 a warning is signalled, and the error is generated only on
3439 calling the generic function.
3440 * changed .fasl file version number, in part to add type codes for
3441 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3442 obscure ANSI requirements
3444 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3445 * fixed bug 148: failure to inline-expand a local function left
3446 garbage, confusing the compiler.
3447 * fixed bugs 3cd: structure slot readers perform type check if the
3448 slot can have an invalid value (i.e. it is either not initialized
3449 or can be written with a less specific slot writer).
3450 * bug fix: the compiler now traps array references to elements off
3451 the end of an array; previously, the bounds checking in some
3452 circumstances could go off-by-one.
3453 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3455 * type declarations for array element types now obey the description
3456 on the CLHS page "Declaration TYPE", as per discussions on
3457 sbcl-help around 2003-05-08. This means that a declaration
3458 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3459 declaration, all references to BAR will be asserted or assumed
3460 (with THE, so dependent on compiler policy) to involve objects of
3461 type FOO. Note that no such declaration is implied in
3462 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3463 * declared types of functions from the "Conditions"
3464 chapter. (reported by Paul Dietz)
3465 * bug fix: CERROR accepts a function as its first argument.
3466 * bug fix: NTH an NTHCDR accept a bignum as index
3467 arguments. (reported by Adam Warner)
3468 * optimization: character compare routines now optimize comparing
3469 against a constant character. (reported by Gilbert Baumann)
3470 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3471 argument now works properly on the MIPS platform.
3472 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3473 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3474 declared to have a functional type, does not cause an error
3476 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3477 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3478 * fixed bug: if last continuation of a deleted block has a
3479 destination, this destination should be deleted too. (reported by
3481 * fixed a bug in the bootstrap process: the host compiler's values
3482 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3483 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3484 test case from Patrik Nordebo)
3485 * improved the ability of the disassembler on the PPC platform to
3486 provide helpful disassembly notes.
3487 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3488 the class in more cases than previously.
3489 * bug fix: FILE-POSITION now understands :START and :END for
3490 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3491 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3492 8) data. (thanks to David Lichteblau)
3493 * bug fix: it is possible to add a method to a generic function
3494 without lambda list.
3495 * bug fix: reader failed to signal END-OF-FILE inside an
3496 object representation. (reported by Nikodemus Siivola)
3497 * fixed some bugs revealed by Paul Dietz' test suite:
3498 ** LAST and [N]BUTLAST should accept a bignum.
3499 ** condition slot accessors are methods.
3500 ** (VECTOR NIL) is a subtype of STRING.
3502 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3503 * minor incompatible change: some nonsensical specialized lambda
3504 lists (used in DEFMETHOD) which were previously ignored now signal
3506 * minor incompatible change: the system is now aware of the types of
3507 variables in the COMMON-LISP package, and will signal errors for
3508 most violations of these type constraints (where previously they
3509 were silently accepted).
3510 * minor incompatible change: COMPILE-FILE now uses the freedom
3511 afforded (ANSI 3.2.2.3) to use derived function types for
3512 functions defined in the same file. This also permits the system
3513 to warn on static type mismatches and function
3514 redefinition. (Currently it does not work with high DEBUG level.)
3515 * minor incompatible change: VALUES declaration is disabled.
3516 * When issuing notes, the compiler now signals a condition of type
3517 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3518 restart for use in user handlers. It is expected that the
3519 COMPILER-NOTE condition will eventually become a condition
3520 supertype to a hierarchy of note types, which will then be
3521 handleable in a similar fashion. However, at the moment, no such
3522 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3523 but it's an implementation detail, not a classification for the
3525 * Changes in type checking closed the following bugs:
3526 ** type checking of unused values (192b, 194d, 203);
3527 ** template selection based on unsafe type assertions (192c, 236);
3528 ** type checking in branches (194bc).
3529 * A short form of VALUES type specifier has ANSI meaning (it has
3530 increased the number of situations when SBCL cannot perform type
3532 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3533 keywords or constants is permissible.
3534 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3535 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3536 classes. (thanks to Antonio Martinez)
3537 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3538 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3539 argument to a pretty-print stream. Instead, it leaves any such
3540 operations to DESCRIBE-OBJECT methods.
3541 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3543 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3544 lambda lists. (thanks to David Lichteblau)
3545 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3546 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3547 (thanks to Gerd Moellmann)
3548 * fixed bug 246: increased compilation speed of long
3549 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3551 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3553 * DEFCONSTANT now throws a condition of type
3554 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3555 constant to a non-EQL value; CONTINUE and ABORT restarts
3556 respectively change and preserve the value.
3557 * fixed bug 63: The code walker, part of the implementation of CLOS,
3558 is now better at handling symbol macros.
3559 * bug fix: There is no longer an internal implementation type named
3560 CL:LENGTH. (reported by Raymond Toy)
3561 * bug fix: In macro-like defining macros/special operators the
3562 implicit block does not enclose the lambda list.
3563 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3564 enclosed in parentheses) are not suitable as type specifiers, and
3565 their use properly signals an error now.
3566 * bug fix: An argument count mismatch for a type specifier in code
3567 being compiled no longer causes an unhandled error at compile
3568 time, but signals a compile-time warning.
3569 * fixed simple vector readable printing
3570 * bug fix: DESCRIBE takes more care over whether the class
3571 precedence list slot of a class is bound before accessing it.
3572 (reported by Markus Krummenacker)
3573 * bug fix: FORMATTER can successfully compile pretty-printer format
3574 strings which use variants of the ~* directive inside.
3575 * bug fix: SEARCH now applies its TEST predicate to the elements of
3576 the arguments in the correct order. (thanks to Wolfhard Buss)
3577 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3578 in type inference. (thanks to Robert E. Brown)
3579 * bug fix: Reading in symbols with an explicit package name of ""
3580 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3581 * fixed some bugs revealed by Paul Dietz' test suite:
3582 ** NIL is now allowed as a structure slot name.
3583 ** Arbitrary numbers, not just REALs, are allowed in certain
3584 circumstances in LOOP for-as-arithmetic clauses.
3585 ** Multiple class redefinitions before slot access no longer
3586 causes a type error.
3587 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3588 association between the name and a class.
3589 ** Generic functions with non-standard method-combination and over
3590 five methods all of which return constants no longer return NIL
3591 after the first few invocations. (thanks to Gerd Moellmann)
3592 ** CALL-NEXT-METHOD with no arguments now passes the original
3593 values of the arguments, even in the presence of assignment.
3594 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3596 ** DISASSEMBLE works with closures and funcallable instances.
3597 ** ADD-METHOD now returns the generic function, not the new method.
3598 ** FIND-METHOD signals an error if the lengths of the specializers
3599 is incompatible with the generic function, even if the ERRORP
3601 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3602 which its argument is a member.
3603 ** DEFCLASS only redefines the class named by its class-name
3604 argument if that name is the proper name of the class;
3605 otherwise, it creates a new class.
3606 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3607 of the UNBOUND-SLOT condition to the name of the slot.
3608 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3609 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3610 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3611 SLOT-MAKUNBOUND in the specified fashion.
3613 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3614 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3615 cross-compilation host. As a consequence, we can now bootstrap our
3616 way up to SBCL starting with a bare gcc toolchain and human-readable
3617 source code (first the source to CLISP, then the source to SBCL).
3618 * A contributed module containing a partial implementation of the
3619 simple-streams interface has been included. (thanks to Rudi
3621 * A contributed module implementing the RFC1321 Message Digest
3622 Algorithm, known as MD5, has been included.
3623 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3624 no longer has any effect, as the code controlled by this feature
3625 has been deleted. (As far as we know, no-one has ever built using
3626 this feature, and its semantics were confused in any case).
3627 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3628 work on conditions (as required by the ANSI specification),
3629 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3630 expected behaviour on conditions. Users should note, however,
3631 that such behaviour is not required by the ANSI specification,
3632 and so use of this behaviour may render their code unportable.
3633 * fixed some bugs revealed by Paul Dietz' test suite:
3634 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3636 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3637 ** SXHASH on condition objects no longer returns NIL.
3638 ** :ALLOCATION :CLASS slots are better treated; their values are
3639 updated on class redefinition, and initforms inherited from
3640 superclasses are applied.
3641 ** REMOVE-METHOD returns its generic function argument even when
3642 no method was removed.
3643 ** SHARED-INITIALIZE now initializes the values of the requested
3644 slots, including those with :ALLOCATION :CLASS.
3645 ** ALLOCATE-INSTANCE now works on structure classes defined via
3646 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3648 ** SLOT-EXISTS-P now works on conditions, as well as structures
3650 ** MAKE-LOAD-FORM now has the required methods on
3651 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3652 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3653 keyword, and now implements the SLOT-NAMES argument.
3654 ** methods with &OPTIONAL arguments no longer allow too many
3655 arguments to be passed in the call without error.
3656 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3657 option is consistent with the required arguments of the generic
3658 function lambda list.
3659 * bug fix: REQUIRE accepts a string designator. (Thanks to
3661 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3662 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3663 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3664 * bug fix: The compiler now checks for duplicated variables in macro
3666 * bug fix: SETQ on globals returns the correct value.
3667 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3668 not a COMPILER-ERROR (followed by some other strange error on
3669 choosing the CONTINUE restart).
3670 * bug fix: make.sh and friends are now more consistent in the way that
3671 they look for GNU "make".
3673 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3674 * experimental native threads support (on x86 Linux >=2.4 only).
3675 This is not compiled in by default: you need to add :SB-THREAD to
3676 the target features. See the "Beyond ANSI" chapter of the manual
3678 * fix for longstanding nonANSIism: The old distinction between
3679 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3680 The return value from CL:FIND-CLASS is now a CLOS class, and
3681 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3682 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3683 * An interface to the MetaObject Protocol, as described in Kiczales,
3684 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3685 MIT Press, 1991, is available from the SB-MOP package.
3686 * incompatible change: the SB-PCL package should now be considered
3687 a private implementation detail, and no longer a semi-private MOP
3689 * minor incompatible change: due to rearrangement for threads, the
3690 control stack and binding stack are now allocated at arbitrary
3691 addresses instead of being hardcoded per-port. Users affected by
3692 this probably have to be doing advanced things with shared
3693 libraries, and will know who they are.
3694 * minor incompatible change: Previously, all --eval forms used were
3695 processed with READ before any of them were processed with EVAL.
3696 Now each --eval form is processed with both READ and EVAL before
3697 the next --eval form is processed. (Thus package operations like
3698 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3699 work as the user might reasonably expect.)
3700 * minor incompatible change: *STANDARD-INPUT* is now only an
3701 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3703 * minor incompatible change: Y-OR-N-P is now character-oriented,
3704 not line oriented. Also, YES-OR-NO-P now works without errors.
3705 (thanks to Antonio Martinez)
3706 * sb-aclrepl module improvements: an integrated inspector, added
3707 repl features, and a bug fix to :trace command.
3708 * Known functions, which cannot be open coded by the backend, are
3709 considered to be able to check types of their arguments. (fixing
3710 a bug report by Nathan J. Froyd)
3711 * fixed a bug in computing method discriminating functions: It is
3712 now possible to define methods specialized on classes which have
3713 forward-referenced superclasses. (thanks to Gerd Moellmann)
3714 * fixed evaluation order in optional entries (reported by Gilbert
3716 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3717 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3718 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3719 required-by-AMOP NAME argument, as well as CLASS and
3720 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3721 * fixed bug 20: DEFMETHOD can define methods using names that are
3722 not the proper names of classes to designate class specializers.
3723 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3724 Unix file descriptors, instead of blowing up. (thanks to Antonio
3726 * Garbage collection refactoring: user-visible change is that a
3727 call to the GC function during WITHOUT-GCING will not do garbage
3728 collection until the end of the WITHOUT-GCING. If you were doing
3729 this you were probably losing anyway.
3730 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3731 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3732 TYPEP the latter but not the former.
3733 * The compiler issues a full WARNING for calls to undefined functions
3734 with names from the CL package.
3735 * MAP-INTO for a vector destination is open coded. (reported by
3736 Brian Downing on c.l.l)
3737 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3738 documentation string.
3739 * fixed some bugs revealed by Paul Dietz' test suite:
3740 ** COPY-ALIST now signals an error if its argument is a dotted
3742 ** Condition slots are now accessed more correctly in the presence
3743 of multiple initargs for a given slot.
3744 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3745 exclude restarts of the same name associated with a different
3747 ** DEFCLASS of forward-referenced classes with another
3748 forward-referenced class in the superclasses list no longer
3750 ** Condition slots are now initialized once each, not multiple
3751 times. (thanks to Gerd Moellmann)
3752 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3754 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3755 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3756 arguments contain duplicated elements.
3757 ** RESTART-CASE understands local macros.
3758 ** RESTART-CASE associates exactly its own restarts with a condition.
3759 ** ENDP in safe mode checks its argument to be of type LIST.
3760 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3761 in question is unbound.
3762 ** Optimized MAKE-INSTANCE functions no longer cause internal
3763 assertion failures in the presence of duplicate initargs.
3764 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3765 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3766 propagated even in the ctor optimized implementation of
3768 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3770 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3771 * a better implementation of SXHASH on (simple) bit vectors,
3772 measured both in execution speed and in distribution of results
3773 over the positive fixnums, has been installed. Likewise, a better
3774 implementation of EQUAL for simple bit vectors is now available.
3775 * fixed CEILING optimization for a divisor of form 2^k.
3776 * fixed bug 240 (emitting extra style warnings "using the lexical
3777 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3778 by Antonio Martinez)
3779 * fixed SXHASH, giving different results for NIL depending on type
3780 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3781 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3782 variable. (found by Rolf Wester)
3783 * SBCL does not ignore type declarations for special
3784 variables. (reported by rif on c.l.l 2003-03-05)
3785 * some bug fixes in contrib/sb-aclrepl/
3786 * fixed some bugs revealed by Paul Dietz' test suite:
3787 ** a bug in the CONS type specifier, whereby the CAR and CDR
3788 types got intertwined, has been fixed;
3789 ** the type system is now able to reason about the interaction
3790 between INTEGER and RATIO types more completely;
3791 ** APPEND, [N]REVERSE and NRECONC check that those their
3792 arguments, which must be proper lists, are really so;
3793 ** An array specialized to be unable to hold elements has been
3794 implemented, as required -- yes, really -- by ANSI;
3795 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3796 on malformed property lists;
3798 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3799 * incompatible packaging change: in line with Unix convention,
3800 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3801 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3802 * REQUIRE and PROVIDE are now optionally capable of doing something
3803 useful. See the documentation string for REQUIRE.
3804 * infrastructure for a managed SBCL contrib system: contributed
3805 modules in this release include:
3806 ** the ASDF system definition facility;
3807 ** an interface to the BSD Sockets API;
3808 ** an ACL-like convenience interface to the repl;
3809 (thanks to Kevin Rosenberg)
3810 ** an implementation of ROTATE-BYTE, with efficient implementation
3812 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3813 gives a closer approximation to the right answer than previously.
3814 (thanks to Raymond Toy)
3815 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3816 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3817 optional environment arguments, as required by ANSI.
3818 * fixed bugs in other functions taking environment objects, allowing
3819 calls with an explicit NIL environment argument to be compiled
3821 * fixed bug 228: primary return values from
3822 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3823 COMPILE or FUNCTION.
3824 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3825 :TYPE will no longer signal errors on innocuous objects.
3826 * fixed bug 231b: SETQ is better at respecting type declarations in
3827 the lexical environment.
3828 * fixed a bug in DEFCLASS: classes named by symbols with no or
3829 unprintable packages can now be defined.
3830 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3831 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3832 * fixed compiler failure related to checking types of functions.
3833 (reported by Robert E. Brown)
3834 * the compiler is now much more consistent in its error-checking
3835 treatment of bounding index arguments to sequence functions: in
3836 (SAFETY 3) code, errors will be signalled in almost all cases if
3837 invalid sequence bounding indices are passed to functions defined
3838 by ANSI to operate on sequences.
3839 * fixed a bug in the build procedure: documentation of SBCL-specific
3840 packages is now preserved and available in the final Lisp image.
3841 * lifted FDEFINITION lookup out of loops in the implementation of
3842 many list operations. (thanks to Robert E. Brown)
3843 * fixed a bug in the reader: the #n# reader macro now works for
3844 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3845 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3846 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3847 E. Brown and Tony Martinez respectively)
3848 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3849 SLOT-BOUNDP: in particular, it is now able to optimize them much
3850 better, and is now not vulnerable to having packages renamed.
3851 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3852 always called when a slot is not present in an instance. (thanks
3854 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3855 longer signal an error on unreading a character following EOF on
3856 the previous constituent stream. (thanks to Tony Martinez)
3857 * fixed some bugs revealed by Paul Dietz' test suite:
3858 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3859 not just nonnegative fixnums;
3860 ** the logical bit-array operators such as BIT-AND now accept an
3861 explicit NIL for their "opt-arg" argument (to indicate a
3862 freshly-consed result bit-array);
3863 ** ELT now signals an error on an invalid sequence index in safe
3865 ** the type system is now cleverer about negations of numeric
3866 types, and consequently understands the BIGNUM and RATIO types
3868 ** the type system is now cleverer about the interaction between
3869 INTEGER and RATIO types: while bugs still remain, many more
3870 cases are accurately computed;
3871 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3872 if it is in the last clause;
3873 ** CONSTANTLY now correctly returns a side-effect-free function in
3875 ** DECLARE is no longer treated as a special-operator; in
3876 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3877 * incremented fasl file version number due to the change in the
3878 DEFSTRUCT-SLOT-DESCRIPTION structure.
3880 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3881 * minor incompatible change: code processed by the "interpreter" or
3882 EVAL now has a compilation optimization policy of (DEBUG 2)
3883 (changed from (DEBUG 1)) to improve debuggability of interactive
3884 development, and to allow the use of the debug RETURN command in
3886 * an experimental implementation of the RETURN command for the
3887 debugger has been included. (thanks to Frederik Kuivinen)
3888 * fixed bug 62: constraints were not propagated into a loop.
3889 * fixed bug in embedded calls of SORT (reported and investigated by
3891 * fixed some bugs revealed by Paul Dietz' test suite:
3892 ** printing and reading of arrays with some dimensions having
3893 length 0 (thanks to Gerd Moellmann);
3894 ** BOA constructor with &AUX argument without a default value does
3895 not cause a type error;
3896 ** CONSTANTP now returns true for all self-evaluating objects.
3898 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3899 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3900 accessors that are related by inheritance, as specified in the
3901 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3902 Valtteri Vuorikoski)
3903 * The compiler is now able to inline functions that were defined in
3904 a complex lexical environment (e.g. inside a MACROLET).
3905 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3907 * Support for the upcoming FreeBSD-5.0 release has been included.
3908 (thanks to Dag-Erling Smorgrav)
3909 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3910 effect when it is not in a toplevel context.
3911 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3912 stand a better chance of being correct. (thanks to Gerd
3914 * fixed bug in COERCE, which now signals an error on coercing a
3915 rational to a bounded real type which excludes the expected
3917 * The compiler is now able to derive types more accurately from the
3918 COERCE and COMPILE functions.
3919 * fixed bug 223: functional binding is considered to be constant
3920 only for symbols in the CL package.
3921 * fixed bug 231: SETQ did not check the type of a variable being set
3922 (reported by Robert E. Brown)
3923 * A new optimization for MAKE-INSTANCE has been included, fixing
3924 various bugs (including relating to :ALLOCATION :CLASS slots and
3925 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3927 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3928 ** As required by ANSI, LOOP now disallows anonymous collection
3929 clauses such as COLLECT I in conjunction with aggregate boolean
3930 clauses such as THEREIS (= I 1);
3931 ** LOOP now signals an error when any variable is reused in the
3932 same loop (including the potentially useful construct analogous
3933 to WITH A = 1 WITH A = (1+ A);
3934 ** IT is only a special loop symbol within the first clause of a
3935 conditional loop clause;
3936 ** LOOP with a typed iteration variable over a hashtable now
3937 signals a type error iff it should.
3938 * fixed some other bugs revealed by Paul Dietz' test suite:
3939 ** FILE-STREAM now names the class previously known as FD-STREAM;
3940 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3941 argument) no longer signals an error;
3942 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3943 of the slot symbol, rather than using the current package
3944 ((:CONC-NAME "") continues to intern the slot's name in the
3946 * incremented fasl file version number, because of the incompatible
3947 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3948 of the new implementation of DEFINE-COMPILER-MACRO.
3950 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3951 * Support for building SBCL for MIPS platforms running in
3952 little-endian mode has now been checked in, and basic
3953 functionality on said platforms verified.
3954 * minor incompatible change: PCL now records the pathname of a file
3955 in which methods and the like are defined, rather than its
3957 * minor incompatible change: TRUENAME now considers the truename of
3958 a file naming a directory to be the pathname with :DIRECTORY
3959 component indicating that directory.
3960 * minor incompatible change: a NAMED clause in the extended form of
3961 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3962 reason for the previous behaviour is unclear.
3963 * more systematization and improvement of CLOS and MOP conformance
3964 in PCL (thanks to Gerd Moellman and Pierre Mai):
3965 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3967 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3968 primary methods with no specializers;
3969 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3971 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3972 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3973 FORWARD-REFERENCED-CLASSes; error reporting on
3974 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3976 ** SXHASH on CLOS instances now uses a slot internal to the
3977 instance to return different numbers on distinct instances,
3978 while preserving the same return value through invocations of
3980 ** DEFMETHOD signals errors when methods with longer incongruent
3981 lambda lists are added to generic functions;
3982 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3983 CLASS, as specified in AMOP;
3984 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3985 on the order returned by the primary method for classes of
3986 class STANDARD-CLASS;
3987 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3988 * fixed some bugs shown by Paul Dietz' test suite:
3989 ** DOLIST puts its body in TAGBODY;
3990 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3992 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3993 value producing form;
3994 ** if more variables are given to PROGV than values, extra
3995 variables are bound and made to have no value;
3996 ** NSUBSTITUTE on list arguments gets the right answer with
3998 ** ELT signals an error of type TYPE-ERROR when the index argument
3999 is not a valid sequence index;
4000 ** LOOP signals (at macroexpansion time) an error of type
4001 PROGRAM-ERROR when duplicate variable names are found;
4002 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4003 ** FUNCALL of special-operators now cause an error of type
4005 ** PSETQ now works as required in the presence of side-effecting
4006 symbol-macro places;
4007 ** NCONC accepts any object as its last argument;
4008 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4010 ** loop-for-as-package does not require a package to be explicitely
4012 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4014 * fixed bug 166: compiler preserves "there is a way to go"
4015 invariant when deleting code.
4016 * fixed bug 172: macro lambda lists with required arguments after
4017 &REST arguments now cause an error to be signalled. (thanks to
4019 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4020 bug. (thanks to Matthew Danish)
4021 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4023 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4024 arguments are lexically rebound. (thanks to Gerd Moellmann and
4026 * fixed bug 194: error messages are now more informative when there
4027 is no primary method applicable in a call to a generic
4028 function. (thanks to Gerd Moellmann)
4029 * fixed bug in command line argument checking (thanks to Julian
4031 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4032 (thanks to Matthew Danish)
4033 * incremented fasl file version number, because of the
4034 SXHASH-related changes in the layout of CLOS data structures
4036 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4037 * minor incompatible change: The runtime (the Unix executable named
4038 "sbcl") is now much pickier about the .core files it will load.
4039 Essentially it now requires .core files to descend from the same
4040 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4041 as the runtime does. (The intent is to prevent the crashes which
4042 can occur, and which can even be reported as mysterious failures,
4043 when people patch the sources or change the build parameters
4044 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4045 sbcl and .core files.)
4046 * fixed bug: VALUES-LIST is no longer optimized away.
4047 * fixed bug 142: The FFI conversion of C string values to Lisp
4048 string values no longer conses excessively. (thanks to Nathan
4049 Froyd porting Raymond Toy's fix to CMU CL)
4050 * began to systematize and improve MOP conformance in PCL (thanks to
4051 Nathan Froyd, Gerd Moellman and Pierre Mai):
4052 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4054 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4055 ** FINALIZE-INHERITANCE is now called on class finalization;
4056 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4057 argument precedence order.
4058 * fixed bug 202: The compiler no longer fails on functions whose
4059 derived types contradict their declared type.
4060 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4061 so it can be non-toplevel.
4062 * The fasl file version number has changed (because of the new
4063 implementation of DEFMACRO).
4064 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4065 safe code, that any length requirement by their type-specifier
4066 argument is valid. The exceptions to this are described in bug
4068 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4069 functions now check the types of their inputs as required by ANSI.
4070 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4071 introduced symbol is DECLAREd to be SPECIAL.
4072 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4073 * fixed bug: :COUNT argument to sequence functions may be negative
4074 * fixed bug: body of DO-SYMBOLS may contain declarations
4075 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4076 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4077 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4078 symbol macro only once
4079 * fixed printing of call frame when argument list is unavailable
4080 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4081 * compiler no longer signals WARNING on unknown keyword
4084 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4085 * A beta-quality port to the mips architecture running Linux,
4086 based on the old CMUCL backend, has been made. It has been tested
4087 on a big-endian kernel, and works sufficiently well to be able to
4088 rebuild itself; it has not been tested in little-endian mode.
4089 * fixed an inconsistency between gencgc.c and purify.c which made
4090 dumping/loading .core files unreliable
4091 * fixed bug 120a: The compiler now deals correctly with IFs where
4092 the consequent is the same as the alternative, instead of
4093 misderiving the return type. (thanks to Alexey Dejneka)
4094 * fixed bug 113: Logical pathnames are now dumpable (the logical
4095 host is resolved at load-time, throwing an error if it is not
4097 * fixed bug 174: FORMAT's error message is slightly clearer when a
4098 non-printing character is used in a format directive.
4099 * fixed several bugs in compiler checking of type declarations, i.e.
4100 violations of the Python "declarations are assertions" principle
4101 (thanks to Alexey Dejneka)
4102 * fixed several bugs in PCL's error checking (thanks to Gerd
4104 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4106 * fixed bug in compilation of functions as first class values
4107 (thanks to Antonio Martinez-Shotton)
4108 * The compiler's handling TYPE-ERRORs which it can prove will
4109 inevitably happen at runtime has been cleaned up and corrected
4110 in several ways. (thanks to Alexey Dejneka)
4111 * improved argument type checking for various basic arithmetic
4112 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4113 lavished on them in the past that they can be compiled in many
4114 ways in different special cases
4115 * fixed bug 181: compiler checks validity of user supplied type
4117 * cleaned up code flushing in optimization: Function calls which
4118 should signal errors for safety purposes (e.g. which ANSI says
4119 should signal errors when their arguments are of incorrect type)
4120 are no longer optimized away.
4121 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4122 * incremented fasl file version number, because changes in the
4123 implementation of sequence functions like COERCE caused
4124 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4125 in old inline expansions) to become undefined. (Actually these
4126 changes were later undone, so we might very well be binary
4127 compatible with 0.7.7 after all, but leaving the version number
4128 incremented seemed like the simplest and most conservative
4131 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4132 * An alpha-quality port to the parisc architecture running Linux,
4133 based on the old CMUCL backend, has been made. This, even more so
4134 than the other backends, should be considered still a work in
4135 progress; known problems include that the Linux kernel in 64-bit
4136 mode does not propagate the correct sigcontext structure to
4137 userspace, and consequently SBCL on a parisc64 kernel will not
4139 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4140 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4141 suppressed.) Also now that the compiler is looking at declarations
4142 in the environment, it checks optimization declarations as well,
4143 and suppresses inlining when (> DEBUG SPEED).
4144 * More fixes have been made to treatment of floating point exception
4145 treatment and other Unix signals. In particular, floating point
4146 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4147 * The detection and handling of control stack exhaustion (infinite
4148 or very deeply nested recursion) has changed. Stack exhaustion
4149 detection is now done by write-protecting pages at the OS level
4150 and applies at all optimization settings; when found, a
4151 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4152 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4153 be caught using IGNORE-ERRORS.
4154 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4155 correctly when transforming recursive LABELS functions to LETs.
4156 (thanks to Alexey Dejneka)
4157 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4158 that are names of constants or global variables.
4159 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4160 alien routines with docstrings.
4161 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4162 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4164 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4165 (thanks to Eric Marsden)
4166 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4167 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4168 * Bug fix: The SPARC backend can now compile functions involving
4169 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4170 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4171 to a functions expecting a PATHNAME-DESIGNATOR.
4172 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4173 lambda lists. (thanks to Alexey Dejneka)
4174 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4175 functions so that EXPORTing the name of the class doesn't cause
4176 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4177 to Antonio Martinez for reporting this)
4178 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4179 constant-folded without failing an assertion. (thanks to Einar
4180 Floystad Dorum for reporting this)
4181 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4182 types are now dealt with more correctly by the compiler.
4183 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4184 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4185 behaviour analogous to RENAME-FILE. This puts its behaviour more
4186 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4188 * The fasl file version number has changed again. (because of the
4189 bug fix involving the names of PCL MAKE-INSTANCE functions)
4191 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4192 * bug fix: Floating point exceptions are treated much more
4193 consistently on the x86/Linux and PPC/Linux platforms.
4194 * Array initialization with :INITIAL-ELEMENT is now much faster for
4195 cases when the compiler cannot open code the array creation, but
4196 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4197 array accesses have also seen a speed increase.
4198 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4199 specified. (This was at the root of some bad interactions between
4200 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4202 * bug fix: Internal error arguments for undefined functions are now
4203 computed correctly on the PPC/Linux platform.
4204 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4205 Raymond Toy's patch for CMU CL)
4206 * Support for the Solaris 9 operating environment has been included
4207 (thanks to Daniel Merritt)
4208 * A very ugly but hopefully complete draft of the missing FFI chapter
4209 of the manual has been created by reformatting the corresponding
4210 CMU CL manual chapter into (currently very ugly and incoherent)
4211 DocBook and bringing it up to date for SBCL behavior. Thus, the
4212 manual is now essentially complete, at least by my extreme
4213 once-and-only-once standards, whereby it's acceptable to refer to
4214 the doc strings of SB-EXT functions as the primary documentation.
4215 * The fasl file version number has changed again, due to cleanup of
4216 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4217 is no longer a static symbol.)
4219 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4220 * SBCL now builds with OpenMCL (version 0.12) as the
4221 cross-compilation host; also, more progress has been made toward
4222 bootstrapping under CLISP.
4223 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4225 * bug 158 fixed: The compiler can now deal with integer loop
4226 increments different from 1; fixing this turned out also to fix
4228 * bug 169 fixed: no more bogus warnings about using lexical bindings
4229 despite the presence of perfectly good SPECIAL declarations (thanks
4230 to David Lichteblau)
4231 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4232 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4233 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4235 * bug 180 fixed: Method combination specifications no longer ignore
4236 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4237 * bug fix: Structure type predicate functions now check their argument
4238 count as they should.
4239 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4240 correctly. (thanks to Pierre Mai)
4241 * minor incompatible change: The --noprogrammer option is deprecated
4242 in favor of the new --disable-debugger option, which is very similar.
4243 (The major difference is that it takes effect at a slightly different
4244 time at startup, causing handling of errors in --sysinit and
4245 --userinit files will be affected differently.) The
4246 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4247 been added to allow this functionality to be controlled from ordinary
4248 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4249 maintainers, who might want to run non-interactive scripts to
4250 build SBCL cores which will later be used interactively.)
4251 * minor incompatible change: The LOAD function no longer, when given
4252 a wild pathname to load, loads all files matching that pathname.
4253 Instead, an error of type FILE-ERROR is signalled.
4255 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4256 * bug 147 fixed: The compiler preserves its block link/count
4257 invariants more correctly now so that it doesn't crash. (thanks
4259 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4261 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4262 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4263 no-value-for-this-character as NIL (as specified by ANSI).
4264 * HOST-NAMESTRING on physical pathnames now returns a string that is
4265 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4266 (thanks to Christophe Rhodes)
4267 * The Alpha port handles icache flushing more correctly. (thanks to
4269 * More progress has been made toward bootstrapping under CLISP. (thanks
4270 to Christophe Rhodes)
4271 * The fasl file format has changed again, because dynamic loading
4272 on OpenBSD (which has non-ELF object files) motivated some cleanups
4273 in the way that foreign symbols are transformed and passed around.
4274 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4275 is no longer treated as whitespace by the reader, but instead as
4276 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4277 |A
\7fB|, instead of A as it used to.
4279 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4280 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4281 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4282 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4283 this as of 0.7.1.45, but was left out of the previous news section
4284 (thanks to Dan Barlow)
4285 * SBCL now runs on the Solaris operating system on SPARC architectures
4286 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4287 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4288 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4289 * SPARC backend cleanups, allowing builds of cores optimized for V8
4290 and V9 SPARCS, and also emission of code targeted to a particular
4291 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4293 * SBCL is closer to bootstrapping under CLISP, thanks to various
4294 fixes by Christophe Rhodes.
4295 * The fasl file format has changed again, to allow the compiler's
4296 INFO database to support symbol macros.
4297 * The user manual (in doc/) is formatted into HTML more nicely.
4298 (thanks to coreythomas)
4299 * The system is smarter about SUBTYPEP relationships, especially
4300 those involving NOT types (including types such as ATOM which are
4301 represented internally using NOT types). Thus SUBTYPEP is less
4302 likely to return (VALUES NIL NIL) in general, and in particular
4303 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4305 * The fasl file format has changed again, because the internal
4306 representation of types now includes a new slot to support the new
4307 SUBTYPEP-of-NOT-types logic.
4308 * (not a change in the main branch of SBCL, but a related prototype
4309 which can hopefully be merged into the main branch of SBCL in the
4310 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4311 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4312 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4313 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4314 dispatch macro character combinations. (thanks to Alexey Dejneka)
4315 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4316 that superficially look like logical namestrings correctly.
4317 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4319 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4320 default supplied-p) for &optional and &key arguments. (thanks to
4323 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4324 * incompatible change: The compiler is now less aggressive about
4325 tail call optimization, doing it only when (> SPACE DEBUG) or
4326 (> SPEED DEBUG). (This is an incompatible change because there are
4327 programs which relied on the old CMU-CL-style behavior to optimize
4328 away their unbounded recursion which will now die of stack overflow.)
4329 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4330 for non-GENCGC systems has been increased to 20M (since that
4331 seems much closer to the likely performance optimum for modern
4332 systems than the old 4M value was)
4333 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4334 and *DEBUG-PRINT-LEVEL*
4335 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4336 of CMU CL's support for SPARC, and various endianness and other
4337 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4338 * new syntactic sugar for the Unix command line: --load foo.bar is now
4339 an alternate notation for --eval '(load "foo.bar")'.
4341 ** The system now detects stack overflow and handles it gracefully,
4342 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4343 optimization settings. (This is a good thing in general, and
4344 its introduction in this version should be particularly timely
4345 for anyone whose code fails because of suppression of tail
4347 ** The system now hunts for the C variable "environ" in a more
4348 devious way, to avoid segfaults when the C library version differs
4349 between compile time and run time. (thanks to Christophe Rhodes)
4350 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4351 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4352 ** The compiler no longer issues bogus style warnings for undefined
4353 classes in the same source file as the DEFCLASSes which defined
4354 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4356 ** fixes in CONDITION class precedence list for undefined function
4357 errors (thanks to Alexei Dejneka)
4358 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4359 correctly. (thanks to Dan Barlow)
4360 ** portability fixes aiming at bootstrapping under CLISP (thanks
4361 to Dave McDonald and Christophe Rhodes)
4362 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4363 ** fixes in type translation and and type inference (thanks to
4365 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4366 ** various fixes in the new ports (thanks to Dan Barlow)
4367 * several changes related to debugging:
4368 ** suppression of tail recursion, as noted above
4369 ** stack overflow detection, as noted above
4370 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4371 is now the default. (For some time encapsulation has been more
4372 reliable than the breakpoint-based :ENCAPSULATE NIL
4373 implementation, at least on X86 systems; and I just noticed that
4374 encapsulation also seems closer to the spirit of the ANSI
4377 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4379 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4380 up properly again. (There was a packaging bug in 0.7.0 which
4381 left their definitions in SB-SYS::LOAD-FOREIGN and
4382 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4383 vital for most things which interface to C-level interfaces,
4384 like extensions working with sockets or databases or
4385 Perl-compatible regexes or whatever, and the need to fix
4386 this bug is the main reason that 0.7.1 was released so
4388 ** DEFGENERIC is now choosier about the methods it redefines, so that
4389 reLOADing a previously-LOADed file containing DEFGENERICs does
4390 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4391 cycle now works as it should. (thanks to Alexey Dejneka)
4392 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4393 fixed by Christophe Rhodes. (He actually submitted this patch
4394 months ago, and I delayed until after 0.7.0.)
4395 ** Bug 111 (internal compiler confusion about runtime checks on
4396 FUNCTION types) was fixed by Alexey Dejneka.
4397 * Some internal cleanups (getting rid of variables which aren't
4398 needed now that the byte interpreter is gone) caused the fasl
4399 file format number to change again.
4401 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4402 * major incompatible change: The default fasl file extension, i.e. the
4403 default extension for files produced by COMPILE-FILE, has changed
4404 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4406 ** There are many changes in the implementation of the compiler.
4407 SBCL is now essentially a compiler-only implementation of ANSI
4408 Common Lisp. EVAL still "interprets" a few special cases, but
4409 almost all the interesting cases are handled by creating
4410 a LAMBDA expression, calling COMPILE on it, then calling
4411 FUNCALL on the result.
4412 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4413 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4414 Since the code is newer, there might still be some new bugs
4415 (though not as many as before Martin Atzmueller's fixes:-). But
4416 the new code is substantially simpler and clearer, and hopefully
4417 any remaining bugs will be simpler, less fundamental, and more
4418 fixable then the bugs in the old code.
4419 ** The revised compiler is still a little unsteady on its feet.
4421 *** The debugging information it produces (particularly the names
4422 of FUNCTION objects) is sometimes much less useful than what
4423 the old compiler produced.
4424 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4425 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4426 within a MACROLET) has been temporarily weakened.
4427 ** There are new compiler optimizations for various functions:
4428 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4429 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4430 *** the math functions TRUNCATE, FLOOR, and CEILING
4431 *** the function-of-all-trades COERCE
4432 Mostly these should be transparent, but there's one
4433 potentially-annoying problem (bug 117): when the compiler
4434 inline-expands a function and does type analysis on the result,
4435 it can create control paths which have type mismatches, and
4436 when it can't prove that those control paths aren't taken,
4437 it will issue WARNINGs about the type mismatches. This is
4438 a particular problem in practice for the new sequence functions.
4439 It's not clear how this should be fixed, and for now, a
4440 workaround is given in the entry for 117 in the BUGS file.
4441 ** (Because of the interaction between the two previous items --
4442 occasional inlining problems and new inline expansions -- some
4443 of the new sequence function optimizations won't really kick in
4444 completely until debugging information, and then inlining, are
4445 straightened out in some future version.)
4446 * minor incompatible changes:
4447 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4448 DIRECTORY no longer implicitly promotes NIL slots of its
4449 pathname argument to :WILD. In particular, when you ask for the
4450 contents of a directory (which you used to be able to do without
4451 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4452 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4453 ** changes in behavior that ANSI explicitly defines to be
4454 implementation dependent:
4455 *** The new compiler-only implementation still conforms with ANSI,
4456 but acts a little different than before. Besides the obvious
4457 changes in performance tradeoffs (that the cost per form passed
4458 to EVAL has gone up, and the cost per form executed by EVAL
4459 has gone down), the behavior of the system changes a little
4460 because there are no longer any interpreted function objects.
4461 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4462 e.g. doing COMPILE on the output of interactive DEFUN is
4464 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4466 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4467 has changed from (:CL) to NIL.
4468 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4469 e.g. #\Newline and #\Tab, don't have names specified in the
4470 ANSI Common Lisp standard, is now based on their ASCII symbolic
4471 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4472 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4473 are no longer used for output.
4474 ** changes in internal implementation constants:
4475 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4476 4 million. (If your application spends a lot of time GCing and
4477 you have a lot of RAM, you might want to experiment with
4478 increasing it even more.)
4479 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4480 However, almost all old code should still continue to work without
4481 immediate update, as SB-C-CALL is now a (deprecated) nickname
4483 ** Old operator names in the style DEF-FOO are now deprecated in
4484 favor of new corresponding names DEFINE-FOO, for consistency with
4485 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4486 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4487 internal symbols, but a few supported extensions like
4488 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4489 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4490 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4491 etc. as you get deeper into recursive calls to the debugger
4492 command loop, instead of the old "5]", "5]]", "5]]]"
4493 sequence. (I was motivated to do this when squabbles between
4494 ILISP and SBCL left me very deeply nested in the debugger. In the
4495 short term, this change will probably provoke more ILISP/SBCL
4496 squabbles, but hopefully it will be an improvement in the long run.)
4497 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4498 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4499 function, since declaiming return types involving aliens is
4500 (1) annoyingly messy to do by hand and (2) vital to efficient
4501 compilation of code which calls such functions.
4502 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4503 longer reexported by the SB-EXT package. They're solely useful
4504 for alien code, so it seems more logical that you should get
4505 them from the SB-ALIEN package, not in SB-EXT.
4506 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4507 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4508 features. Instead, the code that they used to control is always
4509 built into the system.
4510 * many other bug fixes
4511 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4512 advantage of the new EVAL-WHEN stuff and to clean them up in
4513 general, and they are now more ANSI-compliant in a number of
4514 ways. Martin Atzmueller is responsible for a lot of this.
4515 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4517 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4518 *** correct ERROR type for various file operations
4519 *** some fixes for Lisp streams
4520 *** DEFMETHOD syntax checking
4521 *** changing old weird representation of debug information as
4522 strings (which, among their other deficiencies, don't transform
4523 correctly when you rename packages, and don't change their
4524 print representation when you change things like *PACKAGE*
4525 and *PRINT-LENGTH*) to symbols and lists of symbols
4526 He also made several improvements and fixed several bugs in DESCRIBE.
4527 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4529 *** misbehavior of WRITE-STRING/WRITE-LINE
4530 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4531 and several other LOOP problems as well
4532 *** DIRECTORY when similar filenames are present
4533 *** DEFGENERIC with :METHOD options
4534 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4535 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4536 *** argument ordering in FIND with :TEST option
4537 *** mishandled package designator argument in APROPOS-LIST
4538 *** various problems in the backquote readmacro
4539 *** a bug in APROPOS
4540 *** probably some others that I'm not describing very well here,
4541 since the CVS log documents them by reference to sbcl-devel
4542 messages, and the SourceForge archives aren't working well.:-(
4543 ** Dan Barlow improved the Alpha port (and is making progress on the
4544 PPC port, for those of you who think different).
4545 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4546 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4547 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4548 continues to work on the SPARC port (for those of you in a position
4549 to look down upon our little PC-compatible boxes from a great height).
4550 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4551 and uses that copy, rather than the current dynamic value, when
4552 it's trying to decide whether to truncate output. Thus e.g.
4553 (let ((*print-lines* 50))
4554 (pprint-logical-block (stream nil)
4556 (let ((*print-lines* 8))
4557 (print (aref possiblybigthings i) stream)))))
4558 should now truncate the logical block only at 50 lines, instead of
4559 often truncating it at 8 lines, as it did before.
4560 * The doc/cmucl/ directory, containing old CMU CL documentation
4561 from the time of the fork, is no longer part of the base system.
4562 SourceForge has shut down its anonymous FTP service, and with it
4563 my original plan for distributing the old CMU CL documentation
4564 there. For now, if you need these files you can download an old
4565 SBCL source release and extract them from it.
4566 * The fasl file version number changed again, for dozens of reasons,
4567 some of which are apparent above.
4569 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4570 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4571 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4572 patch, so that DISASSEMBLE output is much nicer.
4573 * The code in the SB-PROFILE package now seems reasonably stable.
4574 I still haven't decided what the final interface should look like
4575 (I'd like PROFILE to interact cleanly with TRACE, since both
4576 facilities use function encapsulation) but if you have a need
4577 for profiling now, you can probably use it successfully with
4578 the current CMU-CL-style interface.
4579 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4580 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4581 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4582 link now returns the dangling link itself, and for similar
4583 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4584 link itself. (In these cases the old code signalled an error and
4585 looped endlessly, respectively.) Thus, DIRECTORY now works even
4586 in the presence of dangling and cyclic symbolic links.
4587 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4588 is now a supported extension again, since the consensus on
4589 sbcl-devel was that it can be useful for ordinary development
4590 work, not just for debugging SBCL itself.
4591 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4592 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4593 that currently-defined functions might be redefined later with
4594 different return types.
4595 * Hash tables can be printed readably, as inspired by CMU CL code
4596 of Eric Marsden and SBCL code of Martin Atzmueller.
4597 * better error handling in CLOS method combination, thanks to
4598 Martin Atzmueller porting Pierre Mai's CMU CL patches
4599 * more overflow fixes for >16Mbyte I/O buffers
4600 * A bug in READ has been fixed, so that now a single Ctrl-D
4601 character suffices to cause end-of-file on character streams.
4602 In particular, now you only need one Ctrl-D at the command
4603 line (not two) to exit SBCL.
4604 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4606 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4607 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4608 does the right thing.
4609 * The implementation of some type tests, especially for CONDITION
4610 types, is now tidier and maybe faster, due to CMU CL code
4611 originally by Douglas Crosher, ported by Martin Atzmueller.
4612 * Some math functions have been fixed, and there are new
4613 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4614 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4615 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4616 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4617 likely to be built into sbcl-0.7.0.)
4618 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4619 CL, ported to SBCL by Martin Atzmueller)
4620 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4621 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4622 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4623 * There's a new slam.sh hack to shorten the edit/compile/debug
4624 cycle for low-level changes to SBCL itself, and a new
4625 :SB-AFTER-XC-CORE target feature to control the generation of
4626 the after-xc.core file needed by slam.sh.
4627 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4628 COMPILE-FILE is no longer supported, so that now every function
4629 gets an entry point, so that block compilation looks a little
4630 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4631 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4632 returns the number of bytes consed since the system started,
4633 rather than the number consed since the first time the function
4634 was called. (The new definition parallels ANSI functions like
4635 CL:GET-INTERNAL-RUN-TIME.)
4636 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4637 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4638 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4639 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4640 * Fasl file version numbers are now independent of the target CPU,
4641 since historically most system changes which required version
4642 number changes have affected all CPUs equally. Similarly,
4643 the byte fasl file version is now equal to the ordinary
4646 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4647 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4648 is no longer recognized. I apologize for this, because it was
4649 listed in SB-EXT as a supported extension, but I found that
4650 its existing behavior was poorly specified, as well as incorrectly
4651 specified, and it looked like too much of a mess to straighten it
4652 out. I have enough on my hands trying to get ANSI stuff to work..
4653 * many patches ported from CMU CL by Martin Atzmueller, with
4654 half a dozen bug fixes in pretty-printing and the debugger, and
4655 half a dozen others elsewhere
4656 * fixed bug 13: Floating point infinities are now supported again.
4657 They might still be a little bit flaky, but thanks to bug reports
4658 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4659 as flaky as they were.
4660 * The --noprogrammer command line option is now supported. (Its
4661 behavior is slightly different in detail from what the old man
4662 page claimed it would do, but it's still appropriate under the
4663 same circumstances that the man page talks about.)
4664 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4665 are now supported, and enabled by default. Thus, the compiler can
4666 handle many floating point and complex operations much less
4667 inefficiently. (Thus e.g. you can implement a complex FFT
4669 * The compiler now detects type mismatches between DECLAIM FTYPE
4670 and DEFUN better, and implements CHECK-TYPE more correctly, and
4671 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4672 thanks to patches from Martin Atzmueller.
4673 * various fixes to make the cross-compiler more portable to
4674 ANSI-conforming-but-different cross-compilation hosts (notably
4675 Lispworks for Windows, following bug reports from Arthur Lemmens)
4676 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4677 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4678 fixed thanks to Pierre Mai's CMU CL patches.
4679 * fixes to keep the system from overflowing internal counters when
4680 it tries to use i/o buffers larger than 16M bytes
4681 * fixed bug 45a: Various internal functions required to support
4682 complex special functions have been merged from CMU CL sources.
4683 (When I was first setting up SBCL, I misunderstood a compile-time
4684 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4685 * improved support for type intersection and union, fixing bug 12
4686 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4687 more obscure bugs as well
4688 * some steps toward byte-compiling non-performance-critical
4689 parts of the system, courtesy of patches from Martin Atzmueller
4690 * Christophe Rhodes has made some debian packages of sbcl at
4691 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4692 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4693 stable, but are nonetheless usable. When he's ready, I'd be happy
4694 to add them to the SourceForge "File Releases" section. (And if
4695 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4696 * new fasl file format version number (because of changes in
4697 internal representation of (OR ..) types to accommodate the new
4698 support for (AND ..) types, among other things)
4700 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4701 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4703 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4705 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4706 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4707 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4708 * DESCRIBE now works on structure objects again.
4709 * Most function call argument type mismatches are now handled as
4710 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4711 know whether the function will be redefined before the call is
4712 executed. (The compiler could flag local calls with full WARNINGs,
4713 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4714 it doesn't keep track of enough information to know whether calls
4715 are local in this sense.)
4716 * Compiler output is now more verbose, with messages truncated
4717 later than before. (There should be some supported way for users
4718 to override the default verbosity, but I haven't decided how to
4719 provide it yet, so this behavior is still controlled by the internal
4720 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4721 src/compiler/ir1util.lisp.)
4722 * Fasl file format version numbers have increased again, because
4723 support for the Gray streams extension changes the layout of the
4724 system's STREAM objects.
4725 * The Gray subclassable streams extension now works, thanks to a
4726 patch from Martin Atzmueller.
4727 * The full LOAD-FOREIGN extension (not just the primitive
4728 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4729 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4730 but like most other programs, it defaults to copying the Unix
4731 environment from the original process instead of starting the
4732 new process in an empty environment.
4733 * Extensions which manipulate the Unix environment now support
4734 an :ENVIRONMENT keyword option which doesn't smash case or
4735 do other bad things. The CMU-CL-style :ENV option is retained
4736 for porting convenience.
4737 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4738 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4740 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4742 * A patch from Martin Atzmueller seems to have solved the SIGINT
4743 problem, and as far as we know, signal-handling now works cleanly.
4744 (If you find any new bugs, please report them!)
4745 * The system no longer defaults Lisp source file names to types
4746 ".l", ".cl", or ".lsp", but only to ".lisp".
4747 * The compiler no longer uses special default file extensions for
4748 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4749 seems to expect a single default extension for all compiled code,
4750 and there's no compelling reason to try to stretch the standard
4751 to allow two different extensions.) Instead, byte-compiled files
4752 default to the same extension as native-compiled files.
4753 * Fasl file format version numbers have increased again, because
4754 a rearrangement of internal implementation packages made some
4755 dumped symbols in old fasl files unreadable in new cores.
4756 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4757 many fewer weird special cases.
4758 * Bug #17 (differing COMPILE-FILE behavior between logical and
4759 physical pathnames) has been fixed, and some related misbehavior too,
4760 thanks to a patch from Martin Atzmueller.
4761 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4762 by Tim Moore, ported to SBCL by Martin Atzmueller.
4763 * Martin Atzmueller fixed several filesystem-related problems,
4764 including bug #36, in part by porting CMU CL patches, which were
4765 written in part by Paul Werkowski.
4766 * More compiler warnings in src/runtime/ are gone, thanks to
4767 more patches from Martin Atzmueller.
4768 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4771 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4773 * DESCRIBE now works on CONDITION objects.
4774 * The debugger now handles errors which arise when trying to print
4775 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4777 * The build system now uses an additional file, customize-target-features.lisp,
4778 to allow local modifications to the target *FEATURES* list. (The point of
4779 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4780 debugging features enabled, without having to worry about propagating it
4781 into everyone's system when I do a "cvs update".) When no
4782 customize-target-features.lisp file exists, the target *FEATURES* list
4783 should be constructed the same way as before.
4784 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4785 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4786 warn about behavior which is undefined under the ANSI spec. Note: This
4787 is specified by ANSI, but it's not very popular with programmers.
4788 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4789 macro in the SBCL sources for an example of a workaround which you
4790 might use to make portable ANSI-standard code which does what you want.
4791 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4792 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4793 when it's used as a non-toplevel form. (This is required in order
4794 to implement the DEFCONSTANT-EQX macro.)
4795 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4796 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4797 funny things, due to bugs in the implementation of EVAL-WHEN
4798 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4799 non-toplevel DEFCONSTANTs are uncommon.)
4800 * The core file version number and fasl file version number have been
4801 incremented, because the old noncompliant DEFCONSTANT behavior involved
4802 calling functions which no longer exist, and because I also took the
4803 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4804 * fixed bug 1 (error handling before read-eval-print loop starts), and
4805 redid debugger restarts and related debugger commands somewhat while
4807 ** The QUIT debugger command is gone, since it did something
4808 rather different than the SB-EXT:QUIT command, and since it never
4809 worked properly outside the main toplevel read/eval/print loop.
4810 Invoking the new TOPLEVEL restart provides the same functionality.
4811 ** The GO debugger command is also gone, since you can just invoke
4812 the CONTINUE restart directly instead.
4813 ** The TOP debugger command is also gone, since it's redundant with the
4814 FRAME 0 command, and since it interfered with abbreviations for the
4816 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4818 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4819 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4820 some porting work by Martin Atzmueller)
4821 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4822 with a boatload of patches which he ported to SBCL. Now that those
4824 ** The system tries to make sure that its low-priority messages
4825 are prefixed by semicolons, to help people who like to use
4826 syntax highlighting in their ILISP buffer. (This patch
4827 was originally due to Raymond Toy.)
4828 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4829 patches originally written by Raymond Toy.
4830 ** The compiler understands coercion between single-value and
4831 multiple-VALUES type expressions better, getting rid of some very
4832 weird behavior, thanks to patches originally by Robert MacLachlan
4833 and Douglas Crosher.
4834 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4835 lambda lists, thanks to a patch originally by Pierre Mai.
4836 ** The system no longer bogusly warns about "abbreviated type
4838 ** The compiler gets less confused by inlining and RETURN-FROM,
4839 thanks to some patches originally by Tim Moore.
4840 ** The system no longer hangs when dumping circular lists to fasl
4841 files, thanks to a patch originally from Douglas Crosher.
4842 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4843 undefined function error.
4844 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4845 in structure slot initforms) for now, documented workaround instead:-|
4846 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4847 * fixed bug 5: added stubs for various Gray stream functions called
4848 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4849 installed, at least appropriate type errors are generated
4850 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4851 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4852 consistently in DEFMETHOD forms.
4853 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4854 it doesn't seem to affect SBCL after all
4855 * The C runtime system now builds with better optimization and many
4856 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4858 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4860 * The system is now under CVS at SourceForge (instead of the
4861 CVS repository on my home machine).
4862 * The new signal handling code has been tweaked to treat register
4863 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4864 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4865 downstream, e.g. in debug-int.lisp, has implicit dependencies
4866 on the unsignedness of integer representation of machine words,
4867 and that caused the system to bomb out with infinite regress
4868 when trying to recover from type errors involving signed values,
4869 e.g. (BUTLAST '(1 2 3) -1).)
4870 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4871 (This was one of the bugs Peter Van Eynde reported back in July.)
4872 * The system now uses code inspired by Colin Walters' O(N)
4873 implementation of MAP (from the cmucl-imp@cons.org mailing
4874 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4875 inline the MAP operation, and there is more than one
4876 sequence argument to the MAP call (so that it can't just
4877 do ETYPECASE once and for all based on the type of the
4878 single sequence argument). (The old non-inline implementation
4879 of the general M-argument sequence-of-length-N case required
4880 O(M*N*N) time when any of the sequence arguments were LISTs.)
4881 * The QUIT :UNIX-CODE keyword argument has been renamed to
4882 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4883 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4885 * Raymond Wiker's patches to port dynamic loading from Linux to
4886 FreeBSD have been added.
4887 * The BUGS file is now more nearly up to date, thanks in large part
4888 to Martin Atzmueller's review of it.
4889 * The debugger now flushes standard output streams before it begins
4890 its output ("debugger invoked" and so forth).
4891 * The core version number and fasl file version number have both
4892 been incremented, because of incompatible changes in the layout
4894 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4895 used to not be called for a saved Lisp image.)
4896 * Martin Atzmueller's version of a patch to fix a compiler crash,
4897 as posted on sbcl-devel 13 September 2000, has been installed.
4898 * Instead of installing Martin Atzmueller's patch for the
4899 compiler transform for SUBSEQ, I deleted the compiler transform,
4900 and transforms for some similar consing operations.
4901 * A bug in signal handling which kept TRACE from working on OpenBSD
4903 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4904 away by constant folding
4905 * The system now defines its address space constants in one place
4906 (in the Lisp sources), and propagates them automatically elsewhere
4907 (through GENESIS and the sbcl.h file). Therefore, patching the
4908 address map is less unnecessarily tedious and error-prone. The
4909 Lisp names of address space constants have also been systematized.
4910 * CVS tags like dollar-Header-dollar have been removed from
4911 the sources, because they have never saved me trouble and
4912 they've been source of trouble working with patches and other
4913 diff-related operations.
4914 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4915 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4917 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4919 * The system has been ported to OpenBSD.
4920 * The system now compiles with a simple "sh make.sh" on the systems
4921 that it's supported on. I.e., now you no longer need to tweak
4922 text in the target-features.lisp-expr and symlinks in src/runtime/
4923 by hand, the make.sh takes care of it for you.
4924 * The system is no longer so grossly inefficient when compiling code
4925 involving vectors implemented as general (not simple) vectors (VECTOR T),
4926 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4927 which dares to use the various sequence functions on non-simple
4928 vectors, takes less of a performance hit.
4929 * There is now a primitive type predicate VECTOR-T-P
4930 to test for the (VECTOR T) type, so that e.g.
4931 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4932 can now be compiled with some semblance of efficiency. (The old code
4933 turned the type declaration into a full call to %TYPEP at runtime!)
4934 * AREF on (VECTOR T) is still not fast, since it's still compiled
4935 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4936 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4937 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4938 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4939 without making full calls to SUBTYPEP at runtime.
4940 (Some analogous efficiency issues for non-simple vectors specialized to
4941 element types other than T, or for non-simple multidimensional arrays,
4942 have not been addressed. They could almost certainly be handled the
4943 same way if anyone is motivated to do so.)
4944 * The changes in array handling break binary compatibility, so
4945 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4946 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4947 instead of (VALUES T T).
4948 * By following the instructions that Dan Barlow posted to sbcl-devel
4949 on 2 July 2000, I was able to enable primitive dynamic object
4950 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4951 functionality is not implemented (since it calls ld to resolve
4952 library references automatically, requiring RUN-PROGRAM for its
4953 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4954 try to resolve library references) is now supported.
4955 * The system now flushes the standard output streams when it terminates,
4956 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4957 them at several other probably-convenient times, e.g. in each pass of
4958 the toplevel read-eval-print loop, and after evaluating a form given
4959 as an "--eval" command-line option. (These changes were motivated by a
4960 discussion of stream flushing issues on cmucl-imp in August 2000.)
4961 * The source transform for TYPEP of array types no longer assumes
4962 that an array whose element type is a not-yet-defined type
4963 is implemented as an array of T, but instead punts, so that the
4964 type will be interpreted at runtime.
4965 * There is now some support for cross-compiling in make.sh: each of
4966 the phases of make.sh has its own script. (This should be transparent
4967 to people doing ordinary, non-cross-compile builds.)
4968 * Since my laptop doesn't have hundreds of megabytes of memory like
4969 my desktop machine, I became more motivated to do some items on
4970 my to-do list in order to reduce the size of the system a little:
4971 ** Arrange for various needed-only-at-cold-init things to be
4972 uninterned after cold init. To support this, those things have
4973 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4974 symbols with such names are now uninterned after cold init).
4975 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4976 fasl files for cold load.
4977 ** Remove the old compiler structure pooling code (which used to
4978 be conditional on the target feature :SB-ALLOC) completely.
4979 ** Redo the representation of some data in cold init to be more compact.
4980 (I also looked into supporting byte compiled code at bootstrap time,
4981 which would probably reduce the size of the system a lot, but that
4982 looked too complicated, so I punted for now.)
4983 * The maximum signal nesting depth in the src/runtime/ support code has
4984 been reduced from 4096 to 256. (I don't know any reason for the very
4985 large old value. If the new smaller value turns out to break something,
4986 I'll probably just bump it back up.)
4987 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4989 * Many, many bugs reported by Peter Van Eynde have been added to
4990 the BUGS list; some have even been fixed.
4991 * While enabling dynamic object file loading, I tried to make the
4992 code easier to understand, renaming various functions and variables
4993 with less ambiguous names, and changing some function calling
4994 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4995 * While trying to figure out how to do the OpenBSD port, I tried to
4996 clean up some of the code in src/runtime/. In particular, I dropped
4997 support for non-POSIX signal handling, added various comments,
4998 tweaked the code to reduce the number of compilation warnings, and
4999 renamed some files to increase consistency.
5000 * To support the new automatic configuration functionality in make.sh,
5001 the source file target-features.lisp-expr has been replaced with the
5002 source file base-target-features.lisp-expr and the machine-generated
5003 file local-target-features.lisp-expr.
5004 * fixed a stupid quoting error in make.sh so that using CMU CL
5005 "lisp -batch" as cross-compilation host works again
5007 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5009 * DESCRIBE no longer tries to call itself recursively to describe
5010 bound/fbound values, so that it no longer fails on symbols which are
5011 bound to themselves (like keywords, T, and NIL).
5012 * DESCRIBE now works on generic functions.
5013 * The printer now prints less-screwed-up representations of closures
5014 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5015 * A private symbol is used instead of the :EMPTY keyword previously
5016 used to mark empty slots in hash tables. Thus
5017 (DEFVAR *HT* (MAKE-HASH-TABLE))
5018 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5019 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5020 now does what ANSI says that it should. (You can still get
5021 similar noncompliant behavior if bang on the hash table
5022 implementation with all the symbols you get back from
5023 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5024 This breaks binary compatibility, since tests for equality to
5025 :EMPTY are wired into things like the macroexpansion of
5026 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5028 * There's now a minimal placeholder implementation for CL:STEP,
5029 as required by ANSI.
5030 * An obscure bug in the interaction of the normal compiler, the byte
5031 compiler, inlining, and structure predicates has been patched
5032 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5033 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5035 * Missing ordinary arguments in a macro call are now detected even
5036 when the macro lambda list contains &KEY or &REST.
5037 * The debugger no longer complains about encountering the top of the
5038 stack when you type "FRAME 0" to explicitly instruct it to go to
5039 the top of the stack. And it now prints the frame you request even
5040 if it's the current frame (instead of saying "You are here.").
5041 * As specified by ANSI, the system now always prints keywords
5042 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5044 * The default initial SIZE of HASH-TABLEs is now smaller.
5045 * Type information from CLOS class dispatch is now propagated
5046 into DEFMETHOD bodies, so that e.g.
5047 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5049 is now basically equivalent to
5050 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5051 (DECLARE (TYPE SINGLE-FLOAT X))
5053 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5054 operation, without having to do run-time type dispatch.
5055 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5056 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5057 * Since I don't seem to be making big file reorganizations very often
5058 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5059 is overflowing my ability to conveniently back them up), I've finally
5060 checked the system into CVS. (The CVS repository is on my home system,
5061 not at SourceForge -- putting it on SourceForge might come later.)
5062 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5063 high-level GC-NOTIFY-FOO functions send their output. (There's
5064 still very little control of where low-level verbose GC functions
5065 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5066 less than it used to -- the GC-NOTIFY-FOO functions are now under
5067 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5068 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5069 in only one place in the source code, and propagates it automatically
5070 everywhere that it's needed. Thus e.g. when I bump the version from
5071 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5072 * The C source files now include boilerplate legalese and documentation
5073 at the head of each file (just as the Lisp source files already did).
5074 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5075 to his page will be replaced with a link to his new CLiki service.
5077 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5079 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5080 * The build process now looks for GNU make under the default name "gmake",
5081 instead of "make" as it used to. If GNU make is not available as "gmake"
5082 on your system, you can change this default behavior by setting the
5083 GNUMAKE environment variable.
5084 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5085 can build without error under CMU CL.
5087 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5089 * There is now a partial SBCL user manual (with some new text and some
5090 text cribbed from the CMU CL manual).
5091 * The beginnings of a profiler have been added (starting with the
5092 CMU CL profiler and simplifying and cleaning up). Eventually the
5093 main interface should be through the TRACE macro, but for now,
5094 it's still accessed through vaguely CMU-CL-style functions and macros
5095 exported from the package SB-PROFILE.
5096 * Some problems left over from porting CMU CL to the new
5097 cross-compilation bootstrap process have been cleaned up:
5098 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5099 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5100 part when getting rid of the compiler *BACKEND* stuff.)
5101 ** The value of *NULL-TYPE* was screwed up, because it was
5102 being initialized before the type system knew the final
5103 definition of the 'NULL type. This screwed up several key
5104 optimizations in the compiler, causing inefficiency in all sorts
5105 of places. (I found it because I wanted to understand why
5106 GET-INTERNAL-RUN-TIME was consing.)
5107 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5108 PROCLAIM FTYPE information. Unfortunately this broke binary
5109 compatibility again, since now the forms output by DEFGENERIC
5110 to refer to functions which didn't exist in 0.6.3.
5111 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5112 can use the new (as of 0.6.3) transform for SOME into MAP into
5114 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5115 values to (INTEGER 0 1000000), so that the time code will no longer
5116 occasionally get blown up by Linux returning 1000000 microseconds
5117 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5118 its output conform to the ANSI spec. (Alas, this makes its output
5119 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5120 * A full call to MAP NIL with a single sequence argument no longer conses.
5121 * fixes to problems pointed out by Martin Atzmueller:
5122 * The manual page no longer talks about multiprocessing as though
5123 it were currently supported.
5124 * The ILISP support patches have been removed from the distribution,
5125 because as of version 5.10.1, ILISP now supports SBCL without us
5126 having to maintain patches.
5127 * added a modified version of Raymond Toy's recent CMU CL patch for
5128 EQUALP comparison of HASH-TABLE
5130 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5132 * The system still can't cross-compile itself with
5133 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5134 entails), but at least it can compile more of itself that way
5135 than it used to be able to, and various buglets which were uncovered
5136 by trying to cross-compile itself that way have now been fixed.
5137 * This release breaks binary compatibility again. This time
5138 at least I've incremented the FASL file format version to 2, so that the
5139 problem can be detected reliably instead of just causing weird errors.
5140 * various new style warnings:
5141 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5142 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5143 ** using the lexical binding of a variable named in the *FOO* style
5144 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5145 as specified by ANSI.
5146 * *RANDOM-STATE* is no longer automatically initialized from
5147 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5148 default behavior of the system is to repeat its behavior every time
5149 it's run. If you'd like to change this behavior, you can always
5150 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5151 old convention there was no comparably easy way to get the system to
5152 repeat its behavior every time it was run.
5153 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5154 FTYPE declarations has been removed, in favor of their ANSI
5155 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5156 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5157 the types of their sequence arguments can be determined at compile time.
5158 This is done through a new open code expansion for MAP which eliminates
5159 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5160 argument types can be determined at compile time.
5161 * The optimizer now transforms COERCE into an identity operation when it
5162 can prove that the coerced object is already of the correct type. (This
5163 can be a win for machine generated code, including the output of other
5164 optimization transforms, such as the MAP transform above.)
5165 * Credit information has been moved from source file headers into CREDITS.
5166 * Source file headers have been made more standard.
5167 * The CASE macro now compiles without complaining even when it has
5170 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5172 * (Note that the way that the PCL macroexpansions were rewritten
5173 to accommodate the change in DEFGENERIC below breaks binary
5174 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5175 not run under sbcl-0.6.2. Once we get out of alpha releases,
5176 i.e. hit release 1.0.0, we'll probably try to maintain binary
5177 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5178 and sbcl-1.4.4. Until then, however, it might be fairly common
5179 for maintenance releases to break binary compatibility.)
5180 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5182 * The reporting of unhandled signals has been changed to print some
5183 explanatory text as well as the report form. (Previously only
5184 the report form was printed.)
5185 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5186 it defines, so that the compiler no longer issues undefined function
5187 warnings for compiled-but-not-yet-loaded generic functions.
5188 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5189 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5190 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5191 section of the ANSI spec are supported.
5192 * The "" nickname for the "KEYWORD" package has been removed.
5193 The reader still handles symbol tokens which begin with a package marker
5194 as keywords, but it doesn't expose its mechanism for doing so in the
5195 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5196 * The system now issues STYLE-WARNINGs for contradictory TYPE
5197 proclamations. (Warnings for contradictory FTYPE proclamations would
5198 be nice too, but those can't be done usefully unless the type system
5199 is made smarter about FUNCTION types.)
5200 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5201 systematized, so that "*target-*.lisp is supposed to exist only on the
5202 target and imply that there's a related file which exists on the
5203 host, and *host-*.lisp is supposed to exist only on the host and imply
5204 that there's a related file which exists on the target. This involves a
5205 lot of renaming. Hopefully the acute confusion caused by the renaming
5206 will be justified by the reduction in chronic confusion..
5207 ** runtime-type.lisp -> early-target-type.lisp
5208 ** target-type.lisp -> late-target-type.lisp
5209 ** early-host-format.lisp -> early-format.lisp
5210 ** late-host-format.lisp -> late-format.lisp
5211 ** host-error.lisp -> misc-error.lisp
5212 ** early-error.lisp -> early-target-error.lisp
5213 ** late-error.lisp -> late-target-error.lisp
5214 ** host-defboot.lisp -> early-defboot.lisp
5215 ** code/misc.lisp -> code/target-misc.lisp
5216 ** code/host-misc.lisp -> code/misc.lisp
5217 ** code/numbers.lisp -> code/target-numbers.lisp
5218 ** code/early-numbers.lisp -> numbers.lisp
5219 ** early-host-type.lisp -> early-type.lisp
5220 ** late-host-type.lisp -> late-type.lisp
5221 ** host-typep.lisp -> typep.lisp
5222 ** load.lisp -> target-load.lisp
5223 ** host-load.lisp -> load.lisp
5224 ** host-disassem.lisp -> disassem.lisp
5225 ** host-insts.lisp -> insts.lisp
5226 ** byte-comp.lisp -> target-byte-comp.lisp
5227 ** host-byte-comp.lisp -> byte-comp.lisp
5228 ** host-signal.lisp -> signal.lisp
5229 ** host-defstruct.lisp -> defstruct.lisp
5230 ** late-target-type.lisp -> deftypes-for-target.lisp
5231 Furthermore, several other previously target-only files foo.lisp (e.g.
5232 hash-table.lisp and random.lisp) have been split into a target-and-host
5233 foo.lisp file and a target-only target-foo.lisp file, with their key type
5234 definitions in the target-and-host part, so that the cross-compiler will
5235 know more about target types.
5236 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5237 gone away. In their place are various *BACKEND-FOO* variables
5238 corresponding to the slots of the old structure.
5239 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5240 into the target SBCL has been fixed.
5241 * The chill.lisp system for loading cold code into a running SBCL
5243 * Support for the CMU CL "scavenger hook" extension has been removed.
5244 (It was undocumented and unused in the CMU CL sources that SBCL was
5245 derived from, and stale in sbcl-0.6.1.)
5246 * Various errors in the cross-compiler type system were detected
5247 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5248 (enabling various consistency checks). Many of them were fixed,
5249 but some hard problems remain, so the compiler is back to
5250 running without *TYPE-SYSTEM-INITIALIZED* for now.
5251 * As part of the cross-compiler type system cleanup, I implemented
5252 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5253 * I have started adding UNCROSS calls throughout the type system
5254 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5255 on cross-compiler input files will be able to go away, and various
5257 * CONSTANTP now returns true for quoted forms (as explicitly required
5260 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5262 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5263 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5264 (MAKE-LIST -1). In the longer term, it ought to become true
5265 that declarations are assertions even at SAFETY 1. For now, it's not
5266 quite true even at SAFETY 3, but it's at least more nearly true..
5267 (Note that this change seems to increases the size of the system by
5268 O(5%) and to decrease the speed of the compiler by 20% or more.)
5269 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5270 for the problem of printing dozens of lines of distracting information
5271 about low-level system machinery as part of the top stack frame
5272 on entry to the debugger when an undefined function was called.
5273 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5274 is not reset to COMMON-LISP-USER.
5275 * Compilation of stuff related to dyncount.lisp has been made conditional
5276 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5277 smaller. The various dyncount-related symbols have been moved into
5278 a new "SB-DYNCOUNT" package.
5279 * tty-inspect.lisp has been renamed to inspect.lisp.
5280 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5281 feature has gone away. (When we eventually port to other flavors of
5282 libc and/or Unix, we'll try to make the differences between flavors
5283 invisible at the user level.)
5284 * Various other *FEATURES* tags, and/or their associated conditionals,
5285 have been removed if obsolescent, or given better documentation, or
5286 sometimes given more-mnemonic names.
5288 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5290 * tidied up "make.sh" script
5291 * tidied up system directory structure
5292 * better "clean.sh" behavior
5293 * added doc/FOR-CMUCL-DEVELOPERS
5294 * many many small tweaks to output format, e.g. removing possibly-confusing
5295 trailing #\. character in DESCRIBE-INSTANCE
5296 * (EQUALP #\A 'A) no longer signals an error.
5297 * new hashing code, including EQUALP hashing
5298 * tidied up Lisp initialization and toplevel
5299 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5300 * command line argument processing
5301 * added POSIX-GETENV function to deal with Unix-ish environment variables
5302 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5303 terminating SBCL on EOF
5304 * non-verbose GC by default
5305 * There is no more "sbcl" shell script; the sbcl file is now the C
5306 runtime executable (just like CMU CL).
5307 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5309 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5310 symbol and package information as Lisp native symbol and package objects
5311 instead of strings naming symbols and strings naming packages. This way,
5312 whenever packages are renamed (as in warm init), debug information is
5313 transformed along with everything else.
5314 * tweaked the optimization policy declarations which control the building
5315 of SBCL itself. Now, among other things, the system no longer saves
5316 source location debugging information. (This helps two problems at once
5317 by reducing SBCL size and by keeping SBCL from trying to look for its
5318 sources -- which may not exist -- when reporting errors.)
5319 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5320 debugging and testing purposes
5321 * cleaned up printing, making the printer call PRINT-OBJECT for
5322 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5323 methods, giving nearly-ANSI behavior
5324 * converted almost all special variables to use *FOO* naming convention
5325 * deleted PARSE-TIME functionality, since it can be done portably
5326 * moved some files out of cold init into warm init
5327 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5329 * regularized formatting of source files
5330 * added an install.sh script
5331 * fixed ridiculous memory usage of cross-compiler by making
5332 compiler/alloc.lisp not try to do pooling unless it can hook
5333 itself into the GC of the cross-compilation host. Now the system
5334 builds nicely on my old laptop.
5335 * added :SB-ALLOC in target-features.lisp-expr
5336 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5337 was not implemented)
5338 * re-did condition handling and note reporting in the compiler. Notes
5339 are no longer handled by signalling conditions. Style warnings
5340 and warnings are handled more correctly and reported in such a way
5341 that it's easy to find one or the other in your output (so that you
5342 can e.g. figure out which of many problems caused COMPILE-FILE to
5344 * changed the severity of several compiler warnings from full WARNING
5345 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5346 compiler note reporting so that it doesn't use the condition system
5347 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5348 COMPILE-FILE command)
5349 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5350 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5351 no longer supported, since their implementation was deeply intertwingled
5352 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5353 * removed bogus "support" for compiler macros named (SETF FOO), and
5354 removed the compiler macro for SETF INFO (but only after making a fool
5355 of myself on the cmucl-imp mailing list by posting a bogus patch for
5356 DEFINE-COMPILER-MACRO..)
5357 * Compiled files containing forms which have side effects on the Lisp
5358 reader (such as DEFPACKAGE forms) are now handled more correctly.
5359 (Compiler queuing of top level lambdas has been suppressed by setting
5360 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5361 * deleted various currently-unused source files, e.g. gengc.lisp. They
5362 may be added back at some point e.g. when porting to other architectures,
5363 but until they are it's distracting to distribute them and to try to
5365 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5366 there were so many of them they're just distractions, and UNCROSS is
5367 known to be able to handle the current sources
5368 * moved PROFILE functionality into TRACE, so that it will be clear
5369 how the wrapping and unwrapping of functions when you profile them
5370 interacts with the wrapping and unwrapping of functions when you
5371 trace them. (Actually, the functionality isn't there yet, but at least
5372 the interface specification is there. Hopefully, the functionality will
5373 arrive with some future maintenance release.)
5374 * removed host-oops.lisp
5375 * changed signature of QUIT function to allow UNIX-CODE argument
5376 * fixed READ-SEQUENCE bug
5377 * tweaked verbose GC output so that it looks more like the progress
5378 output that ANSI specifies for functions like LOAD
5379 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5380 * added <http://sbcl.sourceforge.com> to the banner information printed by