1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.32:
3 * improvement: support O_LARGEFILE access to files larger than 2GB on
4 x86-64/linux. (thanks to Daniel Janus)
5 * bug fix: restore buildability on the MIPS platform. (regression from
6 1.0.30.38, reported by Samium Gromoff)
8 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
9 * optimization: faster FIND and POSITION on strings of unknown element type
10 in high SPEED policies. (thanks to Karol Swietlicki)
11 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
13 * improvement: better error signalling for bogus parameter specializer names
14 in DEFMETHOD forms (reported by Pluijzer)
15 * bug fix: DELETE-FILE once again works on logical pathnames (regression
17 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
19 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
20 removes previous default initargs (reported by Lars Rune Nøstdal and
22 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
23 lambda-lists. (reported by Peter Seibel)
24 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
25 correctly when starting from an executable core without saved runtime
26 options (reported by Faré Rideau, thanks to Zach Beane)
27 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
28 an optimization note instead. (reported by Martin Cracauer)
29 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
30 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
31 new process group if it doesn't need to share stdin with the sbcl
32 process. (thanks to Leslie Polzer)
33 * bug fix: SATISFIES could be misoptimized to refer to a local function.
34 (reported by Stanislaw Halik)
36 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
37 * improvement: stack allocation is should now be possible in all nested
38 inlining cases: failure to stack allocate when equivalent code is manually
39 open coded is now considered a bug.
40 * improvements related to Unicode:
41 ** the Unicode character database has been upgraded to the
42 Unicode 5.1 standard, giving names and properties to a number of new
43 characters, and providing a few extra characters with case
45 ** the system now recognizes and produces names for Unicode Hangul
47 ** the EBCDIC-US external-format is now supported for octet operations
48 (as well as for stream operations).
49 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
50 be used to output toplevel compile-time effects into a separate .CFASL
52 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
53 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
55 * optimization: TRUNCATE on known single- and double-floats is upto 25%
57 * optimization: division of floating point numbers by constants uses
58 multiplication by reciprocal when an exact reciprocal exists.
59 * optimization: multiplication of single- and double-floats floats by
60 constant two has been optimized.
61 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
62 sufficient type information is available. (thanks to Leslie Polzer)
63 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
64 known structure objects are as efficient as defstruct generated accessors.
65 * optimization: unused vector creation can now be optimized away.
66 * improvement: ASDF systems can now depends on SB-INTROSPECT.
67 * improvement: a STYLE-WARNING is signalled when a generic function
68 clobbers an earlier FTYPE proclamation.
69 * improvement: the compiler is able to track the effective type of
70 generic function across method addition and removal even in the
71 absence of an explicit DEFGENERIC.
72 * improvement: DESCRIBE now reports on symbols naming undefined
73 but assumed or declared function as well.
74 * improvement: recompilation of systems using SB-GROVEL now works
75 (thanks to Leslie Polzer)
76 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
77 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
79 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
80 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
81 well as user defined declaration names.
82 ** VARIABLE-INFORMATION is now aware of alien variables.
83 * improvement: improved address space layout on OpenBSD (thanks to Josh
85 * improvement: pretty-printing of various Lisp forms has been improved
86 (thanks to Tobias Rittweiler)
87 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
88 unused were deleted in safe code. (reported by John Fremlin)
89 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
91 * bug fix: some out-of-line array predicates were missing (reported by
93 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
95 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
96 (thanks to Larry D'Anna)
97 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
98 as well. (reported by Josh Elsasser)
99 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
100 leading to possible attempts to delete the same file twice. See docstring
101 on DELETE-FILE for details. (reported by John Fremlin)
102 * bug fix: DELETE-FILE once again deletes the file named by the pathname
103 designator argument, rather than its truename. (reported by Luis
105 * bug fix: the low-level debugger had 32-bit assumptions and was missing
106 information about some array types. (thanks to Luis Oliveira)
107 * bug fix: moderately complex combinations of inline expansions could
108 be miscompiled if the result was declared to be dynamic extent.
109 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
110 form (+ <variable> <integer>) were miscompiled under certain
112 * bug fix: in some cases no compiler note about failure to stack allocate
113 was emitted, even if the objects were in fact heap allocated.
114 * bug fix: minor violation of "otherwise inaccessible" rule for stack
115 allocation could cause objects users might reasonably expect to
116 be heap allocated to be stack allocated.
117 * bug fix: DESCRIBE signalled an error for generic functions under
118 certain circumstances. (thanks to Leslie Polzer)
119 * bug fix: Fixed spelling of an error message.
121 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
122 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
123 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
124 of SB-THREAD:THREAD-ERROR-THREAD.
125 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
126 * new feature: docstrings for local and anonymous functions are no longer
127 discarded. (thanks to Leslie Polzer)
128 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
129 values in other threads.
130 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
131 about object allocation.
132 * optimization: division of a real float by a complex float is implemented
133 with a specialised code sequence.
134 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
135 keywords is an order of magnitude faster.
136 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
137 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
138 methods, and similarly for non-standard metaclass classes as long as there
139 are no methods additional on MAKE-INSTANCE.
140 * optimization: more efficient type-checks for FIXNUMs when the value
141 is known to be a signed word on x86 and x86-64.
142 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
143 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
145 * optimization: compiler is smarter about delegating argument type checks to
147 * optimization: several character functions are now compiled somewhat more
148 efficiently. (reported by Lynn Quam)
149 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
150 * improvement: less unsafe constant folding in floating point arithmetic,
151 especially for mixed complex/real -float operations.
152 * optimization: constant double and single floats are stored in native
153 unboxed format on x86[-64].
154 * optimization: smarter code for arithmetic operations with constant floats,
155 complex floats, or integers on x86[-64].
156 * optimization: smarter code for conjugate/multiplication of float complexes
157 and abs/negate of floats on x86-64.
158 * optimization: more efficient complex float and real float operations on
160 * improvement: complex float division is slightly more stable.
161 * improvement: DESCRIBE output has been reworked to be easier to read and
162 contains more pertinent information.
163 * improvement: failure to provide requested stack allocation compiler notes
164 provided in all cases (requested stack allocation not happening without a
165 note being issued is now considered a bug.)
166 * bug fix: SB-POSIX exports the documented types and functions
167 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
168 types. (reported by "abhi")
169 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
170 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
171 (thanks to Paul Khuong)
172 * bug fix: looping around HANDLER-CASE could silently consume stack space
173 on each iteration. (reported by "foobar")
174 * bug fix: better error signalling when calls to functions seeking elements
175 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
176 (reported by Tobias Rittweiler)
177 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
178 directory components now works as it used to. (various prolems reported by
179 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
180 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
181 (reported by Elliot Slaughter, thanks to Stas Boukarev)
182 * bug fix: bogus undefined variable warnings from fopcompiled references to
183 global variables. (thanks to Lars Rune Nøstdal)
184 * bug fix: foreign function names should now appear in backtraces on
185 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
186 * bug fix: SETF compiler macro documentation strings are not discarded
188 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
189 (thanks to Alex Plotnick)
190 * bug fix: SLEEP accepts large integer arguments, truncating them to
191 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
192 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
193 * bug fix: compiler notes for expensive slot type checks could be emitted
194 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
196 changes in sbcl-1.0.29 relative to 1.0.28:
197 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
198 https://bugs.launchpad.net/sbcl
199 Bugs can be reported directly there, or by sending email to
200 sbcl-bugs@lists.sourceforge.net
201 (no subscription required.)
202 * minor incompatible change: under weak type checking policy integer
203 types are weakened less aggressively.
204 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
205 allowed to return, which causes SBCL to quit with exit status 0. Previously
206 if the function returned with a small integer return value, that value
207 was accidentally reused as the exit status.
208 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
209 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
210 :HASH-FUNCTION argument. Refer to user manual for details.
211 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
213 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
214 microseconds since the Unix epoch on all platforms.
215 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
216 allows the compiler to safely elide boundedness checks for special
218 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
219 the symbol, prohibits both lexical and dynamic binding. This is mainly an
220 efficiency measure for threaded platforms, but also valueable in
222 * new feature: UNC pathnames are now understood by the system on Windows.
223 * optimization: the compiler uses a specialized version of FILL when the
224 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
226 * optimization: accesses to potentially non-simple arrays where element type
227 is known are 50% faster.
228 * optimization: compiler now generates faster array typechecking code.
229 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
231 * optimization: multidimensional array accesses in the absence of type
232 information regarding array rank are approximately 10% faster due to
233 open coding of ARRAY-RANK.
234 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
235 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
237 * optimization: result of call to VECTOR can now be stack allocated.
238 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
239 as long as the resulting array is one-dimensional and has a known
240 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
241 length of the list matches the known length of the vector does not
242 allocate the list as an intermediate step. Ditto for VECTOR and simple
244 * optimization: MAKE-ARRAY can now stack allocate in the presence of
245 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
246 known element type, and is known to be simple and one dimensional.
247 * improvement: SBCL now emits a compiler note where stack allocation was
248 requested but could not be provided (not in all cases, unfortunately)
249 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
250 * improvement: pretty-printing loop has been implemented properly. (thanks
251 to Tobias Rittweiler)
252 * documentation: CLOS slot typechecing policy has been documented.
253 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
254 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
255 pointer, leading to memory faults. (thanks to Bart Botta)
256 * bug fix: better floating point exception handling on x86/OpenBSD.
257 (thanks to Josh Elsasser)
258 * bug fix: exit status from QUIT when called under --script was lost
259 (reported by Hubert Kauker)
260 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
261 same implementation of FILL to initialize the array, even if a more
262 efficient one was available (reported by Stas Boukarev, thanks to
264 * bug fix: potential miscompilation of array stack allocation on x86 and
265 x86-64. (reported by Time Tossavainen)
266 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
267 result in their subforms being treated as top level forms. (reported by
269 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
270 than a machine register could leave garbage in the high bits of the
271 result register (bug 316325).
272 * bug fix: disable address space randomization Linux/x86-64 as well,
273 not just x86-64. (reported by Ken Olum)
274 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
275 generate incorrect code.
276 * bug fix: #201; type inference for CONS and ARRAY types could derive
277 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
278 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
279 could not be assigned to or bound with PROGV. (reported by Lorenz
281 * bug fix: the value of CL:- in the inspector was the previous expression
282 evaluated rather than the expression being evaluated.
283 * bug fix: constants can no longer be locally declared special.
284 * bug fix: signals delivered to threads started from foreign land (read:
285 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
286 thread by blocking all signals and resignalling.
287 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
288 from :INITFORM, if any.
290 changes in sbcl-1.0.28 relative to 1.0.27:
291 * a number of bugs in cross-compilation have been fixed, with the ultimate
292 result that building under (at least) clisp should be much more reliable.
293 * minor incompatible changes: echo-streams now propagate unread-char to the
294 underlying input stream, and no longer permit unreading more than one
296 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
297 frames, allowing for instance more reliable backtraces.
298 * improvement: the debugger REPL can now reference lexical variables
299 by name directly for code compiled with (DEBUG 3).
300 * improvement: errors from malformed declarations now have better source
301 paths associated with them. (thanks to Tobias Rittweiler)
302 * optimization: faster local calls on x86/x86-64
303 * bug fix: some error messages for out-of-bound array indexes confused the
304 index and the bound. (thanks to Stas Boukarev)
305 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
307 * bug fix: running regressions tests in shells without OSTYPE set now works.
308 (reported by Harald Hanche-Olsen)
309 * bug fix: more robust static space exhaustion signalling from
310 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
311 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
312 docstring away instead of storing it under names such as (LAMBDA (X)).
313 (reported by Leslie Polzer)
314 * bug fix: timers could go off in the wrong order, be delayed indefinitely
315 (thanks to Ole Arndt for the patch)
316 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
317 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
318 potentially-invalid effective methods in its cache.
319 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
320 instances as well (thanks to Paul Khuong)
321 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
322 SB-POSIX:WAITPID and their C equivalents.
323 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
325 changes in sbcl-1.0.27 relative to 1.0.26:
326 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
327 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
328 * improvement: the system either recovers from stack exhaustion or dies
329 properly as opposed to leaving the user uncertain of whether the handler
330 trampled on some random memory next to the stack or having to rely on
331 --lose-on-corruption (which is still a good idea to use in production
332 because stack exhaustion can happen in signal handlers which will likely
334 * bug fix: fix gc related interrupt handling bug on ppc (regression from
335 1.0.25.37, reported by Harald Hanche-Olsen)
336 * bug fix: work around signal delivery bug in darwin (regression from
337 1.0.25.44, reported by Sidney Markowitz)
338 * bug fix: fix ERROR leaking memory (reported by David Thompson)
340 changes in sbcl-1.0.26 relative to 1.0.25:
341 * incompatible change: an interruption (be it a function passed to
342 INTERRUPT-THREAD or a timer function) runs in an environment where
343 interrupts can be enabled. The interruption can use
344 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
345 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
346 potentially running out of stack. Keep in mind that in the absence
347 of WITHOUT-INTERRUPTS some potentially blocking operation such as
348 acquiring a lock can enable interrupts.
349 * incompatible change: GC-OFF and GC-ON are removed, as they were
350 always unsafe. Use WITHOUT-GCING instead.
351 * new feature: runtime option --disable-ldb
352 * new feature: runtime option --lose-on-corruption to die at the
353 slightest hint of possibly non-recoverable errors: running out of
354 memory, stack, alien stack, binding stack, encountering a memory
355 fault, etc. In the absence of --lose-on-corruption a warning is
357 * enhancement: detect binding stack exhaustion
358 * enhancement: detect alien stack exhaustion on x86/x86-64
359 * improvement: generally more stable and reliable interrupt handling
360 * improvement: there is a per thread interruption queue,
361 interruptions are executed in order of arrival
362 * improvement: a repeating timer reschedules itself when the it has
363 finished, but expiration times are spaced equally. If an
364 expiration time is in the past it will trigger after a short grace
365 period that may give a chance to other things to run.
366 * optimization: slightly faster gc on multithreaded builds
367 * optimization: faster WITHOUT-GCING
368 * bug fix: when JOIN-THREAD signals an error, do it when not holding
369 important locks so that the debugger/handler doesn't produce
370 recursive errors or deadlock.
371 * bug fix: real-time signals are not used anymore, so no more
372 hanging when the system wide real-time signal queue gets full.
373 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
375 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
376 * bug fix: fix random memory faults related to interrupts on alpha
377 * bug fix: fix random memory faults related to interrupts on sparc
378 * bug fix: fix deadlocks related to starting threads
379 * bug fix: fix deadlines on locks on futex platforms
380 * bug fix: restore errno in signal handlers
381 * bug fix: fix deadlocks related to hash tables
382 * bug fix: fix deadlocks in pcl
384 changes in sbcl-1.0.25 relative to 1.0.24:
385 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
386 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
387 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
388 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
389 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
390 better name and does not return values so stale on multiprocessor systems.
391 Also, HOLDING-MUTEX-P was added for about the only sane usage of
393 * improvement: unithread builds keep track of MUTEX-VALUE.
394 * improvement: reading from a TWO-WAY-STREAM does not touch the output
395 stream anymore making it thread safe to have a concurrent reader and
396 a writer, for instance, in a pipe.
397 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
398 arguments, making compiler-macros for SETF-functions able to inspect
399 their constant arguments.
400 * improvement: COMPILE-FILE reports times with millisecond accuracy
401 (thanks to Luis Oliveira)
402 * optimization: CHAR-CODE type derivation has been improved, making
403 TYPEP elimination on subtypes of CHARACTER work better. (reported
404 by Tobias Rittweiler, patch by Paul Khuong)
405 * bug fix: setting alien structure fields of type struct by value now
406 computes the right offset for the memory copy.
407 * bug fix: compilation problem involving inlined calls to aliens with
408 result type VOID. (reported by Ken Olum)
409 * bug fix: #235a; sequential inline expasion in different policies no
410 longer reuses the functional from the previous expansion site.
411 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
412 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
413 * bug fix: named ENUMs in multiply-referenced alien record types no longer
414 cause an implied type redefinition. Regression from 1.0.21.29.
415 * bug fix: sign-extension of small signed return values now works with C
416 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
417 * improvements to the Windows port:
418 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
419 Westfold, thanks to Rudi Schlatte)
421 changes in sbcl-1.0.24 relative to 1.0.23:
422 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
423 vector of a multidimensional SIMPLE-ARRAY.
424 * new feature: the system now signals a continuable error if standard
425 readtable modification is attempted. (thanks to Tobias Rittweiler)
426 * new feature: DIRECTORY has been extended with a non-standard keyword
427 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
428 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
429 has been robustified and documented better. (thanks to Robert Goldman)
430 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
431 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
432 * tradeoff: constant FORMAT control strings are now compiled unless
433 SPACE > SPEED (previously only when SPEED > SPACE.)
434 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
436 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
438 * bug fix: lexical type declarations are now correctly reported by
439 SB-CLTL2. (reported by Larry D'Anna)
440 * bug fix: STRING-TO-OCTETS did not handle :START properly when
441 using UTF-8 as external format. (thanks to Luis Oliveira)
442 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
443 are signalled correctly. (thanks to Stas Boukarev)
444 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
445 designator. (thanks to Tobias Rittweiler)
446 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
447 designator, and returns T instead of the function. (thanks to
449 * bug fix: direct superclasses of STANDARD-CLASS and
450 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
451 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
452 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
453 when no class with the named slot yet exists no longer causes a
454 compile-time style-warning.
455 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
456 in safe code. (reported by Didier Verna)
457 * bug fix: #430; nested structure constructors can stack allocate.
458 * bug fix: on some 64-bit platforms dynamic space size was truncated
459 to #xffff0000 bytes. (reported by Benjamin Lambert)
460 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
461 REPL unusable. (reported by Daniel Herring)
462 * bug fix: return values of READ-SEQUENCE did not take :START into
463 account on file streams, regressions since 1.0.12.22. (reported by
464 Thomas Russ, patch by Paul Khuong)
465 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
466 method specializer used to confuse permuation vector optimization.
467 * bug fix: system inserted bogus implicit type declarations for local
468 special variables in DEFMETHOD bodies.
469 * bug fix: #354; duplicated frames in backtraces due to
470 non-tail-call-optimized XEPs to functions with return type NIL
472 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
473 initializes structure object slots according to DEFSTRUCT initforms,
474 and DEFSTRUCT forms :INCLUDEind structure classes defined using
475 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
476 (reported by Bruno Haible and Stephen Wilson)
477 * bug fix: #395; fill-pointer output streams used now support
478 element-type BASE-CHAR as well.
479 * bug fix: compiler error when attempting to derive return value of
480 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
482 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
484 * bug fix: Mac OS X binaries should now be portable between Leopard
487 changes in sbcl-1.0.23 relative to 1.0.22:
488 * enhancement: when disassembling method functions, disassembly
489 for the associated fast function is also produced.
490 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
492 * optimization: printing with *PRINT-PRETTY* true is now more
493 efficient as long as the object being printed doesn't require
494 special handling by the pretty printer.
495 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
496 now interact correctly with type declarations.
497 * partial bug fix: PCL detects infinite recursion during wrapper
498 validation. (thanks to Attila Lendvai)
499 * bug fix: #426; nested function calls are inlined properly.
500 Previously if FOO was an inline function, in calls of the form
501 (FOO (FOO ...)) the outer call was not inlined.
502 * bug fix: long long arguments passed in registers to alien
503 functions on PowerPC Linux and NetBSD are now handled correctly
504 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
506 changes in sbcl-1.0.22 relative to 1.0.21:
507 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
508 for the shared object in the current directory, but passes the native
509 namestring of the designated pathname to the operation system's shared
510 object loading function as-it.
511 * minor incompatible change: --disable-debugger toplevel option now takes
512 effect before processing of initialization files and --eval or --load
514 * new feature: new commandline argument: --script, which supports
515 shebang lines. See documentation for details. (based on work by
517 * new feature: SAVE-LISP-AND-DIE can save current values of
518 --dynamic-space-size and --control-stack-size in the executable core,
519 causing it to skip normal runtime option processing. See documentation
520 for details. (thanks to Zach Beane)
521 * enhancement: inoccous calls to EVAL or generic functions dispatching
522 on subclasses of eg. STREAM no longer cause compiler notes to appear.
523 * enhancement: the system no longer resignals errors from --load and
524 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
525 associated with the original error to be lost. (thanks to Ariel
527 * enhancement: :DONT-SAVE keyword argument has been added to
528 LOAD-SHARED-OBJECT for controlling interaction with
529 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
530 the effects of an earlier LOAD-SHARED-OBJECT call.
531 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
532 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
533 provided. (reported by Cedric St-Jean)
534 * bug fix: circularity handling in the reader did not treat raw
535 structure slots correctly. (reported by Cedric St-Jean)
536 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
537 file descriptors when there were none.
538 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
539 was broken. (reporteed by Willem Broekema)
540 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
541 pathnames without a directory.
542 * bug fix: COMPILE-FILE did not warn about undefined variable
543 references at toplevel, and LOAD of the resulting fasl did
545 * bug fix: functions with non-required arguments used to end up with
546 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
547 * bug fix: redefining a function with non-required arguments didn't
548 update the system's knowledge about its call signature properly.
549 * bug fix: fixed #431; incompatible alien record type redefinitions
550 are detected and handled. (reported by Neil Haven)
551 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
552 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
554 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
555 after alien stack frames.
556 * bug fix: strings passed to mk{s,d}temp lacked null termination
558 changes in sbcl-1.0.21 relative to 1.0.20:
559 * new feature: the compiler is able to track the effective type of a
560 generic function across method addition and removal.
561 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
562 appropriately typed structure slots without locking.
563 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
564 information like those gathered by TIME using a programming-friendly
566 * new feature: TIME reports time taken even if the form performs a
567 non-local transfer of control.
568 * enhancement: reduced conservativism on GENCGC platforms: on
569 average 45% less pages pinned (measured from SBCL self build).
570 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
571 mutate constant symbols or violate declaimed type of the symbol.
572 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
573 sleeping on the semaphore in heavily contested semaphores.
574 * bug fix: semaphores and condition variables were not interrupt
576 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
577 owned by other threads anymore.
578 * bug fix: FIND on lists called KEY outside the specified
579 subsequence. (reported by budden)
580 * bug fix: LOG doesn't use single-float intermediate results when
581 given mixed integer and double-float arguments, leading to better
582 precision. (reported by Bob Felts)
583 * bug fix: LOG with base zero returned values of inconsistent type.
585 changes in sbcl-1.0.20 relative to 1.0.19:
586 * minor incompatible change: OPTIMIZE qualities
587 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
588 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
589 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
590 * documentation: some slot access efficiency guidelines have been
591 added to the user manual.
592 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
593 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
594 as ASSOC and MEMEBER.
595 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
596 to more efficient EQ-comparison versions more often.
597 * optimization: enhanced derivation of DOLIST iteration variable type
599 * optimization: constant folding of simple (LIST ...) forms as DOLIST
601 * optimization: runtime lookup of function definitions can be
602 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
603 * optimization: compiler is able to derive the return type of
604 (AREF (THE STRING X) Y) as being CHARACTER.
605 * optimization: CLRHASH on empty hash-tables no longer does pointless
606 work. (thanks to Alec Berryman)
607 * optimization: REPLACE deftransforms don't punt when :START1 or
609 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
610 no longer emits a code deletion note. (reported by Andrew
612 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
613 functions with an odd number of &OPTIONAL arguments, a &REST
614 argument, and one or more &KEY arguments at the call site.
615 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
616 arguments appeared at call sites as well.
617 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
618 READ-LINE &co can no longer read from them afterwards. (reported
620 * bug fix: fixed #427: unused local aliens no longer cause compiler
621 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
623 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
624 alien-stack leakage. (reported by Andy Hefner)
625 * bug fix: PROGV signals an error when an attempt to violate declared
626 type of a variable or bind a constant is made.
627 * bug fix: SET signals an error when an attempt to violate declared
628 type of a variable is made.
629 * bug fix: restart computation during the execution of a restart
630 test function no longer causes infinite recursion. (reported by
632 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
633 signals an error. (thanks to Pierre Mai)
634 * bug fix: EXPORT left symbol unexported in conflict situations.
635 (thanks to Michael Weber)
636 * bug fix: correctly handle name conflicts involving CL:NIL.
637 (thanks to Michael Weber)
638 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
639 conflicts arising from USEing package with conflicting symbols
640 correctly. (thanks to Michael Weber)
642 changes in sbcl-1.0.19 relative to 1.0.18:
643 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
644 warnings that go otherwise unhandled will be muffled if they are
645 of the type that's the value of this variable.
646 * optimization: stack allocation is slightly more efficient on x86
648 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
649 where a raw slot always is initialized using the initform whose
650 type is not know sufficiently well a compile-time are now compiled
651 correctly. (reported by John Morrison)
652 * bug fix: compiler no longer makes erronous assumptions in the
653 presence of non-foldable SATISFIES types.
654 * bug fix: stack analysis missed cleanups of dynamic-extent
655 arguments in non-let-converted calls to local functions.
656 * improvements to the Windows port:
657 ** adjusted address spaces for building on both Win32 and
658 Win64. (thanks for John Connors)
659 * fixed some bugs revealed by Paul Dietz' test suite:
660 ** interval arithmetic during type derivation used inexact integer
661 to single-float coercions.
662 ** arithmetic operations involving large integers and single
663 floats give the same results in compiled and interpreted code.
664 ** deriving the result type of COERCE no longer signals an error
665 if the derived type of the second argument is a MEMBER type
666 containing invalid type specifiers.
667 ** ADJOIN with constant NIL as second argument works correctly.
668 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
670 changes in sbcl-1.0.18 relative to 1.0.17:
671 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
672 profiles only the current thread.
673 * minor incompatible change: changes to SYMBOL-VALUE of constants
674 defined with DEFCONSTANT now signal an error.
675 * enhancement: SB-SPROF now has support for wallclock profiling,
676 and is also able to profile specific threads. REPORT output
677 has also additional sorting options.
678 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
680 * optimization: structure allocation has been improved
681 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
682 ** out of line constructors are ~10% faster.
683 ** inline constructors are ~15% faster.
684 ** inline constructors are capable of dynamic extent allocation
685 (generally on x86 and x86-64, in some cases on other platforms
687 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
689 * optimization: file compiler is now able to coalesce non-circular
690 lists, non-base strings, and bit-vectors. Additionally, constants
691 are never referenced through SYMBOL-VALUE at runtime.
692 * optimization: code defining methods on PRINT-OBJECT (and other
693 generic functions in the COMMON-LISP package) now loads faster.
694 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
696 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
697 fasl is now deleted. (reported by Attila Lendvai)
698 * bug fix: READ-LINE always returned NIL for the last line in files.
699 (reported by Yoshinori Tahara)
700 * bug fix: more accurate disassembly annotations of foreign function
701 calls. (thanks to Andy Hefner)
702 * bug fix: trimming non-simple strings and non-string string
703 designators when the there is nothing to trim works properly.
704 (thanks to James Knight)
705 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
706 (thanks to Travis Cross)
707 * fixed some bugs revealed by Paul Dietz' test suite:
708 ** NIL is a valid function name (regression at 1.0.13.38)
709 ** FILL on lists was missing its return value (regression at 1.0.12.27)
710 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
711 fill pointers properly (regression at 1.0.12.23)
712 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
713 displacement indices properly (regression at 1.0.12.23)
715 changes in sbcl-1.0.17 relative to 1.0.16:
716 * temporary regression: user code can no longer allocate closure
717 variable storage on stack, due to bug 419 without explicitly
718 requesting it. Please consult sbcl-devel for advice if you need to
719 use this feature in the meanwhile.
720 * new feature: runtime argument --control-stack-size can be used to
721 adjust thread default control stack size.
722 * enhancement: improved TIME output
723 ** all times are reported using the measured accuracy (milliseconds
724 for real and GC times, microseconds for everything else.)
725 ** processor cycle counts on x86 and x86-64.
726 ** interpreted forms are counted for both evaluator modes.
727 ** number of lambdas converted by the compiler is reported.
728 ** CPU percentage report (computed from real and total run time.)
729 ** more comprehensive run time reporting, using a condenced format
730 ** interperted form, lambda, and page fault counts are omitted
732 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
734 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
735 * optimization: two argument forms of LAST are upto ~10% faster
736 in normal SPEED policies.
737 * optimization: NCONC no longer needs to heap cons its &REST list
738 in normal SPEED policies.
739 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
741 * bug fix: UNION and NUNION work with :TEST-NOT once more,
742 regression since 1.0.9.1. (thanks to Eric Marsden)
743 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
744 since 1.0.15.36. (thanks to Paul Khuong)
745 * bug fix: LAST when always returned the whole list when given a bignum
746 as the second argument.
747 * bug fix: dynamic extent allocation of nested lists and vectors
748 could leak to otherwise accessible parts.
749 * bug fix: invalid optimization of heap-allocated alien variable
751 * bug fix: fasl header checking is less vulnerable to different
752 platform word lengths.
753 * bug fix: more correct assembler syntax for GNU binutils
754 2.18.50.0.4 support. (thanks to Marijn Schouten)
755 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
757 * bug fix: the fopcompiler can handle LOCALLY forms (with no
758 declarations) successfully. (reported by Attila Lendvai)
760 changes in sbcl-1.0.16 relative to 1.0.15:
761 * minor incompatible change: revert the changes to sb-posix's error
762 signaling added in 1.0.14.
763 * minor incompatible change: change PROBE-FILE back to returning
764 NIL whenever we can't get a truename, as was the case before 1.0.14.
765 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
766 inherits from ERROR instead of just CONDITION.
767 * new feature: SB-INTROSPECT can provide source locations for instances
768 as well. (thanks to Tobias Rittweiler)
769 * optimization: binding special variables now generates smaller code
770 on threaded platforms.
771 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
772 and cases where no :TEST is given but the compiler can infer that
773 the element to search is of type (OR FIXNUM (NOT NUMBER)).
774 * optimization: better LOGNOT on fixnums.
775 * optimization: modular arithmetic for a particular requested width
776 is implemented using a tagged representation unless a better
777 representation is available.
778 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
779 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
780 for wellformedness and returns a specialized vector. (reported by
781 Francois-Rene Rideau)
782 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
783 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
784 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
785 unscheduling timer at the same time as another timer fires.
786 * bug fix: don't reschedule timers for dead threads.
787 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
788 * bug fix: copying output from RUN-PROGRAM to a stream signalled
789 bogus errors if select() was interrupted.
790 * enhancement: add support for fcntl's struct flock to SB-POSIX.
792 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
793 * enhancement: cleaner backtraces for interactive interrupts, as
794 well as other cases where the interesting frames used to be
795 obscured by interrupt handling frames.
796 * enhancement: untracing a whole package using (UNTRACE "FOO") is
797 now supported, and tracing a whole package using (TRACE "FOO") now
798 traces SETF-functions as well.
799 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
800 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
801 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
802 * unreadably printed representation of hash-tables now includes
804 * bug fix: partially fixed #188: type propagation from assignments
805 is now more efficient.
806 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
807 'DOUBLE-FLOAT) are not flushable.
808 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
809 full address of the object, and none of the tag bits.
810 * bug fix: readably printing hash-tables now respects other printer
811 control variables. (reported by Cedric St-Jean)
812 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
813 keyword with MAKE-HASH-TABLE.
814 * bug fix: export SB-POSIX:MKSTEMP.
815 * bug fix: SORT was not interrupt safe.
816 * bug fix: XREF accounts for the last node of each basic-block as
818 * bug fix: MAKE-INSTANCE optimizations interacted badly with
819 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
820 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
821 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
822 create obsolete instances in the case of redefinition or
823 obsoletion of a superclass. (thanks to Andy Hefner)
824 * bug fix: Support for the Alpha architecture has been revived; it had
825 suffered somewhat from lack of maintenance since sbcl-1.0.
826 * improvements to the Windows port:
827 ** The system detects the codepage to use at startup, instead of
828 using the value from the saved core. (thanks to Kei Suzuki)
830 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
831 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
832 (see documentation for details.)
833 * revived support for OpenBSD (contributed by Josh Elsasser)
834 * partially fixed bug #108: ROOM no longer suffers from occasional
835 (AVER (SAP= CURRENT END)) failures.
836 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
837 bodies no longer cause a WARNING to be signalled. (reported by
839 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
840 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
841 the bug in TRUNCATE.) (reported by Michael Weber)
842 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
843 no samples. (reported by Andy Hefner)
844 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
845 no longer appear as (NIL ...) frames in backtraces.
846 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
847 is now actually exported from SB-EXT as documented. (reported by
849 * bug fix: sb-aclrepl now correctly understands how to inspect
850 single-floats on 64-bit platforms where single-floats are not boxed.
851 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
852 yet been finalized. (reported by Levente Meszaros)
853 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
854 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
855 SBCL-specific optimize qualities.
857 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
858 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
859 an executable in the search path, and does so in the child
860 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
861 been removed; it can be found in the CVS history, for somebody who
862 needs that search behavior (see the manual).
863 * minor incompatible change: compiler policy re. weakening type
864 checks has changed: now type checks are weakened only if SAFETY < 2
866 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
867 unparsing of directory pathnames as files. Analogously,
868 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
869 filename to parse into a directory pathname.
870 * enhancement: implicit generic function creation now signals a
871 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
872 users can bind handlers for and muffle around calls to LOAD.
873 * enhancement: RUN-PROGRAM allows unicode arguments and environments
874 to be used (using the default stream external format), and allows
875 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
876 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
877 strings and vectors whose element-type or simplicity is not fully
878 known at compile-time.
879 * optimization: STRING-TRIM and related functions no longer allocate
880 a new string when no trimming needs to be performed. These functions
881 are also faster than before when the input string has been declared
883 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
884 * optimization: READ-LINE is significantly faster for files containing
886 * optimization: non-open coded uses of character comparison operators
887 (e.g. char=) no longer cons when called with more than one parameter
888 on platforms supporting dynamic-extent allocation.
889 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
890 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
891 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
893 * bug fix: some sequence functions elided bounds checking when
895 * bug fix: too liberal weakening of union-type checks when SPEED >
897 * bug fix: more bogus fixnum declarations in ROOM implementation
900 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
901 * new feature: MAKE-HASH-TABLE now experimentally accepts a
902 :SYNCHRONIZED argument, which makes the hash-table safe for
903 concurrent accesses (but not iteration.) See also:
904 SB-EXT:WITH-LOCKED-HASH-TABLE, and
905 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
906 * optimization: CONCATENATE on strings is an order of magnitude faster
907 in code compiled with (> SPEED SPACE).
908 * optimization: SUBSEQ is ~50% faster on lists.
909 * bug fix: bug 417 fixed -- source location reporting is now more robust.
910 * bug fix: SUBSEQ on a list will now correctly signal an error if if
911 END is smaller then START.
912 * bug fix: SB-PROFILE will no longer report extra consing for nested
913 calls to profiled functions.
914 * bug fix: ROOM implementation had bogus fixnum declarations which
915 could cause type-errors when calling ROOM on large images.
916 * bug fix: if file compilation is aborted, the partial fasl is now
917 deleted, and COMPILE-FILE returns NIL as the primary value.
918 * bug fix: number of thread safety issues relating to SBCL's internal
919 hash-table usage have been fixed.
920 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
921 be returned from its body when the values were being returned
922 using unknown-values return convection and the W-P-O was wrapped
923 inside an UNWIND-PROTECT.
924 * bug fix: sb-posix should now compile again under Windows, enabling
927 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
928 * incompatible change: hash-table accessor functions are no longer
929 automatically protected by locks. Concurrent accesses on the same hash-table
930 from multiple threads can give inconsistent results or even corrupt the
931 hash-table completely. Multi-threaded applications should do their own
932 locking at the correct granularity. In the current implementation it is
933 still safe to have multiple readers access the same table, but it's not
934 guaranteed that this property will be maintained in future releases.
935 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
936 and will signal an error at runtime.
937 * enhancement: SB-THREAD package now exports a semaphore interface.
938 * enhancement: CONS can now stack-allocate on x86 and
939 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
941 * enhancement: nested lists can now be stack allocated on
942 platforms providing stack allocation support.
943 * enhancement: dynamic-extent support has been extended to support
944 cases where there are multiple possible sources for the stack
946 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
947 if the mutex is uncontested on Linux.
948 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
949 as specified by the CLHS. (thanks to Tobias Rittweiler)
950 * bug fix: NaN comparison now works on x86-64.
951 * bug fix: CLOSE :ABORT T on a stream with pending output now
953 * bug fix: instances of non-standard metaclasses using standard
954 instance structure protocol sometimes missed the slot type checks
956 * bug fix: known functions can be inlined in high-debug code.
958 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
959 * minor incompatible change: the MSI installer on Windows no longer
960 associates .lisp and .fasl files with the installed SBCL.
961 * minor incompatible change: :UNIX is no longer present in *FEATURES*
962 on Windows. (thanks to Luis Oliviera)
963 * new feature: SB-CLTL2 contrib module now implements
964 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
965 * optimization: scavenging weak pointers is now more efficient,
966 requiring O(1) instead of O(N) per weak pointer to identify
967 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
968 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
969 method bodies using constant slot-names when the first argument is
970 a specializer parameter for the method.
971 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
972 names, when the class of the instance is a direct instance
973 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
974 as slow as the constant slot-name case.)
975 * optimization: member type construction is now O(N) instead
977 * optimization: UNION and NUNION are now O(N+M) for large
978 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
980 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
981 now more readable in environments like Slime which display it.
982 (thanks to Tobias C. Rittweiler)
983 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
984 was able to infer the correct argument type for the object on which
985 the CAS operation was being performed.
986 * bug fix: copy propagation interfered with parallel assignment
987 semantics in local calls. (reported by Paul Khuong)
988 * bug fix: the signed modular fixnum shift compiled to wrong code on
989 x86 and x86-64. (spotted by a slight modification to some of
992 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
993 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
994 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
995 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
997 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
998 and generic function now print the object identity for anonymous
999 instances. (thanks to Attila Lendvai)
1000 * enhancement: as an extension to MOP, SBCL now supports SETF of
1001 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1002 (thanks to Attila Lendvai)
1003 * enhancement: sb-cover has an alternate annotation mode which puts
1004 the form annotations at the car of the form, instead of annotating
1005 it completely. The benefit of this mode is that it shows better
1006 which forms were instrumented by the compiler.
1007 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1008 by printer control variables. (reported by Dan Corkill)
1009 * bug fix: system leaked memory when delayed output was performed by
1010 the OS in smaller chunks then expected. (thanks to David Smith)
1011 * bug fix: system leaked memory when file streams were not closed
1013 * bug fix: large objects written to slow streams that were modified
1014 after the write could end up with the modified state written to
1015 the underlying file descriptor.
1016 * bug fix: multiple threads operating in parallel on the same stream
1017 could cause buffer-overflows.
1018 * bug fix: source location information is stored correctly
1019 (broken since 1.0.6). This bug would generally show up as the
1020 Slime debugger highlighting the wrong form when the sldb-show-source
1022 * bug fix: Branch forms are again annotated as branches in the sb-cover
1024 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1025 on x86-64. (reported by Gregory Vanuxem)
1026 * bug fix: EQUALP could return wrong results for structures with raw
1027 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1028 word). (reported by Vjacheslav Fyodorov)
1029 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1032 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1033 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1034 atomic compare-and-swap operations on threaded platforms.
1035 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1036 allows assigning a global minimum value to optimization qualities
1037 (overriding proclamations and declarations).
1038 * enhancement: closed over variables can be stack-allocated on x86
1040 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1042 * optimization: slot definition lookup is now O(1). This speeds up
1043 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1044 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1045 * optimization: ASSOC and MEMBER can now be open-coded for all
1046 combinations of keyword arguments when second argument is constant
1047 and SPEED >= SPACE. In other cases a specialized version is
1049 * bug fix: using obsoleted structure instances with TYPEP and
1050 generic functions now signals a sensible error.
1051 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1052 (reported by Kristoffer Kvello)
1053 * bug fix: backtrace construction is now more careful when making
1054 lisp-objects from pointers on the stack, to avoid creating bogus
1055 objects that can be seen by the GC.
1056 * bug fix: defaulting of values in contexts expecting more than 7
1057 variables now works on x86-64. (reported by Christopher Laux)
1058 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1060 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1061 as the property-list of a symbol.
1062 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1063 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1064 situations requested, are once again file-compileable. (reported
1067 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1068 * MOP improvement: support for user-defined subclasses of
1069 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1070 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1071 the expansion of DEFMETHOD, is responsible for generating a form
1072 which creates a list of specializers when evaluated. Additional
1073 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1074 debugging and introspective support.
1075 * minor incompatible change: the (unsupported) spinlock interface
1076 has changed: free spinlock now has the value NIL, and a held spinlock
1077 has the owning thread as its value.
1078 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1079 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1081 * enhancement: name of a socket-stream is now "a socket" instead of
1082 "a constant string".
1083 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1084 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1085 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1086 for generic functions. (Thanks to Tobias C. Rittweiler)
1087 * optimization: bignum printing speed has been improved by 20-40%
1088 (depending on the bignum size.)
1089 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1091 * bug fix: the cache used by the CLOS to store precomputed effective
1092 methods, slot offsets, and constant return values is now thread and
1094 * bug fix: generic function dispatch function updating is now thread
1095 and interrupt safe (in the sense that the known issues have been
1097 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1098 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1099 * bug fix: asdf systems with dependencies to the SB-POSIX or
1100 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1101 * bug fix: interrupt safety of applicable method computation has been
1104 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1105 * new contrib: sb-cover, an experimental code coverage tool, is included
1106 as a contrib module.
1107 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1108 significantly faster.
1109 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1110 produce more efficient code on x86-64 if the compiler can determine
1111 that (+ INDEX <constant>) does not require a bounds check and FOO
1112 has an element type at least 8 bits wide.
1113 * enhancement: a new, experimental synchronous timeout facility is
1114 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1115 * enhancement: when a symbol name conflict error arises, the
1116 conflicting symbols are always printed with a package prefix.
1117 (thanks to Kevin Reid)
1118 * enhancement: stepping is now once again supported on the SPARC and
1119 MIPS platforms. (It is also now more likely to work on CheneyGC
1121 * enhancement: sb-sprof can now also track and report accurate call
1123 * bug fixes: the treatment of non-standard subclasses of
1124 SB-MOP:SPECIALIZER is more correct.
1125 * incompatible change: PURIFY no longer copies the data from the
1126 dynamic space into the static and read-only spaces on platforms
1127 that use the generational garbage collector
1128 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1130 * bug fix: GC race condition occasionally resulting in crashes with
1131 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1133 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1135 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1136 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1137 * bug fix: an asynchronous interrupt could previously leave the
1138 system running with GC inhibited.
1139 * bug fix: a DECLARE form evaluated at top-level now causes an error
1140 rather than silently (or verbosely) returning NIL.
1141 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1142 result in a error being signalled due to source form lookup errors.
1143 (reported by Peter Graves)
1145 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1146 * incompatible change: removed writer methods for host-ent-name,
1147 host-ent-addresses -- changing the values did not update the DNS
1149 * minor incompatible change: changed experimental JOIN-THREAD interface
1150 * documentation: the manual now lists reader and writer methods
1151 in class slot documentation sections. (thanks to Richard M Kreuter)
1152 * documentation: unwinding from asyncronous events has been
1153 documented as unsafe.
1154 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1155 in multithreaded application code.
1156 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1157 platforms. (thanks to James Anderson for the optimization hint)
1158 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1160 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1161 variants no longer cons.
1162 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1163 their NOT- variants no longer cons.
1164 * optimization: EQUAL hash tables no longer use SXHASH for objects
1165 of all data types, but instead use an EQL hash for types for which
1166 EQUAL is the same as EQL.
1167 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1168 are significantly faster.
1169 * optimization: new STRING-OUTPUT-STREAM implementation is much
1170 faster for large outputs and conses 30% less on average.
1171 * enhancement: XREF information is now collected for references made
1172 to global variables using SYMBOL-VALUE and a constant argument.
1173 * enhancement: SIGINT now causes a specific condition
1174 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1175 * bug fix: FILE-POSITION used to signal an error in some cases where
1176 ANSI requires it to return NIL.
1177 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1178 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1179 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1181 * bug fix: bad type declaration in the CLOS implementation has
1182 been fixed. (reported by James Anderson)
1183 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1184 (thanks to Lutz Euler)
1185 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1186 required by the CLHS. (reported by Samium Gromoff)
1187 * bug fix: dead unbound variable references now signal an error.
1188 (reported by Marco Monteiro)
1189 * bug fix: / with an unused value was being deleted in safe code.
1190 (thanks to Marco Monteiro and Kevin Reid)
1191 * bug fix: number of characters that can be written onto a single
1192 line in a file is unlimited.
1193 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1194 been fixed by inhibiting interrupts for when GC is disabled.
1195 * bug fix: some interrupt safety issues with GETHASH, (SETF
1196 GETHASH), CLRHASH and REMHASH have been fixed.
1197 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1198 specifier no longer causes infinite recursion.
1199 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1200 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1201 * bug fix: an &environment argument with the correct variable information
1202 is passed to macros that are expanded during byte compilation.
1203 (reported by Samium Gromoff)
1204 * bug fix: a logic error was causing the hash function for bignums to
1205 have excessive amounts of collisions. (reported by Faré Rideau)
1206 * bug fix: modifying the contents of an array could change the return
1207 value of SXHASH on that array, which is only allowed for strings
1208 and bit vectors. (bug introduced in 0.9.16)
1209 * improvement: the x86-64/darwin port now passes all tests (except
1210 for the debugger tests) but should still be considered
1211 experimental until this is fixed.
1212 * improvement: a style-warning is signaled for CASE (etc) clauses with
1213 duplicate keys. (thanks to Kevin Reid)
1214 * improvement: macos/x86 and macos/x86-64 now use mach exception
1215 handlers for dealing with illegal instructions (for trapping and
1216 error handling) and memory protection violations (for GC).
1218 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1219 * new platform: experimental support for x86-64/darwin (MacOS).
1220 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1221 and getnameinfo sockets functions are used instead of gethostbyaddr
1222 and gethostbyname, on platforms where the newer functions are available.
1223 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1225 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1226 don't print the startup banner, but behave as if --noinform was passed
1227 as a command line argument. (thanks to Kevin Reid)
1228 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1229 * optimization: code using alien values with undeclared types is much faster.
1230 * optimization: the compiler is now able to open code SEARCH in more cases.
1231 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1232 * bug fix: using standardized COMMON-LISP special variables as loop
1233 variables no longer signals bogus package lock violations. (reported
1235 * bug fix: declaring local loop variables to be of a range-limited type
1236 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1237 (reported by Andras Simon)
1238 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1239 bugs remain on x86-64.)
1240 * bug fix: the #= and ## reader macros now interact reasonably with
1241 funcallable instances.
1242 * bug fix: type-checks for function arguments were compiled using the
1243 compiler policy settings of the wrong lexical environment (in 1.0.2
1245 * bug fix: SHADOW accepts characters as string designators, as required
1246 by the spec (thanks to Eric Marsden)
1247 * bug fix: fixed GC safety issues when foreign functions are called with
1248 non-base strings as arguments
1249 * bug fix: more consistent error output for fatal-compiler-warnings, like
1251 * bug fix: functions with proper names were showing up as NIL in
1252 backtraces (reported by Edi Weitz, regression in 1.0.2)
1254 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1255 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1256 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1257 produce more efficient code on the x86 if the compiler can determine
1258 that (+ INDEX <constant>) does not require a bounds check and FOO
1259 has an element type at least 8 bits wide.
1260 * bug fix: references to undefined variables are handled the same way
1261 in toplevel forms as in the normal compiler
1262 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1264 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1265 (thanks to Jon Buller)
1266 * improvement: faster compilation times for complex functions
1267 * improvement: added readlink support to SB-POSIX (thanks to Richard
1270 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1271 * improvement: experimental support for mach exception handling on
1272 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1274 * improvement: support for GBK external format.
1275 (thanks to Chun Tian (binghe))
1276 * improvement: the debugger now displays variables that have been closed
1277 over, in code compiled with (DEBUG 2) or higher
1278 * improvement: support for executable cores on NetBSD (thanks to
1280 * new feature: added a RESTART-FRAME debugger command
1281 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1282 be used to provide an implementation for FILE-POSITION on Gray streams
1283 (thanks to Eric Marsden)
1284 * new feature: add syslog, openlog and closelog support to SB-POSIX
1285 (thanks to Richard Kreuter)
1286 * optimization: the function call overhead in code compiled with
1287 a high DEBUG optimization setting is significantly
1288 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1289 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1290 (thanks to Tony Martinez)
1291 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1292 evaluated once (reported by Kevin Reid)
1293 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1294 works again (thanks to Kilian Sprotte)
1295 * bug fix: an error is signaled for tagbodies with duplicate tags
1296 (thanks to Stephen Wilson)
1297 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1298 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1299 stack frames from alien callbacks.
1300 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1301 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1302 65k pages (thanks to David Woodhouse)
1303 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1305 changes in sbcl-1.0.1 relative to sbcl-1.0:
1306 * new platform: FreeBSD/x86-64, including support for threading.
1307 * new feature: the compiler stores cross-referencing information
1308 about function calls (who-calls), macroexpansion (who-macroexpands)
1309 and special variables (who-binds, who-sets, who-references) for code
1310 compiled with (< SPACE 3). This information is available through the
1311 sb-introspect contrib.
1312 * new feature: users may subclass SEQUENCE, and have instances of
1313 these classes interoperate with standard Common Lisp functions if
1314 a number of methods are defined. (This feature is experimental
1315 and the interface subject to change based on feedback from SBCL
1316 users and the general community)
1317 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1318 x86/x86-64, rather than the previous fixed depth of 8
1319 * improvement: another pthread back-end of mutex "pthread-futex".
1320 * bug fix: non-ascii command-line arguments are processed correctly
1321 (thanks to Yaroslav Kavenchuk)
1322 * bug fix: non-required arguments were not passed correctly when a method
1323 defined using DEFMETHOD was called from a mop-generated method using
1324 CALL-NEXT-METHOD (reported by Pascal Costanza)
1325 * bug fix: recursion is now permitted in accessors through
1326 SLOT-UNBOUND. (reported by Pascal Costanza)
1327 * bug fix: an error was signaled at startup if the HOME environment
1328 variable was defined, but had an empty value (reported by Peter Van Eynde)
1329 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1330 signal a PROGRAM-ERROR, not a BUG.
1331 * bug fix: SB-POSIX:READDIR works when built with large file support.
1332 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1334 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1335 for better automatic indentation support. (thanks to Matt Pillsbury)
1336 * optimization: loading generic functions no longer takes O(n^2) time,
1337 proportional to the amount of methods in the generic function
1338 (reported by Todd Sabin and Jeremy Brown)
1339 * optimization: the FIND and POSITION family of sequence functions
1340 are significantly faster on arrays whose element types have been
1342 * improvements to the Windows port:
1343 ** Intermittent heap corruption problems have been fixed. (thanks
1344 to Alastair Bridgewater)
1345 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1347 ** Lisp is able to unwind foreign exception frames from alien
1348 callbacks. (thanks to Alastair Bridgewater)
1350 changes in sbcl-1.0 relative to sbcl-0.9.18:
1351 * improvement: experimental support for threading on FreeBSD/x86.
1352 (thanks to NIIMI Satoshi)
1353 * improvement: runtime option --dynamic-space-size can be used
1354 to set the size of the dynamic space reserved on startup.
1355 * improvement: floating point modes in effect are now saved in
1356 core, and restored on startup.
1357 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1358 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1359 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1360 threads are not running after *SAVE-HOOKS* have run.
1361 * improvement: writes to CLOS instance slots are type-checked in code
1362 compiled with (SAFETY 3)
1363 * improvement: floating-point exception handling on FreeBSD (thanks to
1365 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1366 (thanks to Zach Beane)
1367 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1369 * improvement: added support for the Shift-JIS external format.
1370 (contributed by NIIMI Satoshi)
1371 * improvement: callbacks are supported on Linux/PPC. (thanks to
1373 * bug fix: compiler bug triggered by a (non-standard) VALUES
1374 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1375 * bug fix: file compiler no longer confuses validated and already
1376 dumped structurres. (reported by Kaersten Poeck)
1377 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1378 fill-pointer signals a type-error as required. (thanks to
1380 * bug fix: disassemly of funcallable instances works.
1381 * bug fix: single stepping on PPC.
1382 * bug fix: fix thread-safety problems in the type system (generally
1383 manifesting as nonsensical errors like "STRING is a bad type specifier
1384 for sequences" or "The value 1 is not of type FIXNUM")
1385 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1386 (reported by Josip Gracin)
1387 * bug fix: an error is signaled for attempts to displace arrays with
1388 incompatible element types (thanks to Mario Mommer)
1389 * bug fix: more correct handling of wide characters in debug info
1390 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1391 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1392 and don't cause extra consing
1393 * optimization: MAP and MAP-INTO are significantly faster on vectors
1394 whose elements types have been declared.
1395 * Improvements to SB-SPROF:
1396 ** Support for allocation profiling
1397 ** Reduced profiling overhead, especially for long profiling runs
1398 * Improvements to the Windows port:
1399 ** floating point exceptions are now reported correctly.
1400 ** stack exhaustion detection works partially.
1401 ** more accurate GET-INTERNAL-REAL-TIME.
1402 ** better RUN-PROGRAM behaviour in case of errors in the child
1404 ** PROBE-FILE now simplifies pathnames correctly.
1405 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1406 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1407 1st 1970 (although time timezone data will be unreliable).
1408 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1410 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1411 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1412 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1414 * bug fix: two potential GC deadlocks affecting threaded builds.
1415 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1416 returns T (reported by Anton Kazennikov)
1417 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1418 with non-variable places
1419 * bug fix: remove a race condition in the setting of
1420 funcallable-instance functions, this should make threaded CLOS
1421 code more stable against memory faults.
1422 * bug fix: corruption of specials when unbinding is interrupted by an
1423 asynchronous unwind (reported by Hannu Koivisto)
1424 * improvement: the debugger will now also display local variables that
1425 are only used once, for code compiled with a DEBUG optimization quality
1428 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1429 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1430 * incompatible change: External-format support for FFI calls. The
1431 SB-ALIEN:C-STRING no longer implies an ASCII
1432 external-format. Instead the string is subject to external-format
1433 conversion. Additionally return values of type SB-ALIEN:C-STRING
1434 are by default of type (SIMPLE-ARRAY CHARACTER), not
1435 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1436 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1437 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1438 * incompatible change: SB-EXT package no longer contains the
1439 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1440 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1442 * incompatible change: the single-stepper is no longer available
1443 on Alpha, Mips and Sparc platforms.
1444 * minor incompatible change: the direct superclasses of
1445 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1446 not (STANDARD-OBJECT FUNCTION). This makes the
1447 class-precedence-lists of GENERIC-FUNCTION and
1448 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1450 * minor incompatible change: the default stream external format on
1451 non-unicode SBCL is no longer detected from the locale, but is always
1453 * new feature: Add a version of evaluator that uses an interpreter instead
1454 of the compiler. EVAL still uses the compiler by default, to switch it
1455 to use the interpreter, set the value of the variable
1456 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1457 * minor incompatible change: the single-stepper REPL has been merged
1458 with the normal debugger (see the "Stepping" heading of the debugger help
1459 for more details). The debugger command STEP will no longer switch
1460 to the single-stepper REPL.
1461 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1462 for a type now works.
1463 * bug fix: loading of default sysinit file works. (thanks to Leonid
1465 * bug fix: better detection of circularities in the file-compiler.
1466 (reported by Marco Monteiro)
1467 * bug fix: the CL pathname functions now work with files that have
1468 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1469 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1470 systems with Unix98 pty semantics.
1471 * bug fix: ASDF-INSTALL will now work with bsd tar.
1472 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1474 * bug fix: timers expiring in dead threads no longer cause a
1475 type-error (reported by Paul "Nonny Mouse").
1476 * bug fix: thanks to more lightweight single-stepper instrumentation,
1477 code compiled with (DEBUG 3) will compile and execute significantly faster,
1478 and will have more accurate type-inferencing than before
1479 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1480 whose bindings are modified
1481 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1482 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1483 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1484 CL:SOFTWARE-VERSION with proper version
1486 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1487 * feature: implemented the READER-METHOD-CLASS and
1488 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1489 as specified by AMOP.
1490 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1492 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1493 (thanks to Lutz Euler)
1494 * optimization: hashing of general arrays and vectors has been
1495 improved. (reported by Any Fingerhut)
1496 * enhancement: SB-INTROSPECT is now able to find definitions of
1497 profiled functions. (thanks to Troels Henriksen)
1498 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1499 as well, allowing compiler-macros for SETF-functions to expand.
1500 * enhancement: step-instrumentation no longer wraps known
1501 single-value functions with multiple-value context, allowing
1502 better type inference.
1503 * fixed bug #337: use of MAKE-METHOD in method combination now works
1504 even in the presence of user-defined method classes. (reported by
1505 Bruno Haible and Pascal Costanza)
1506 * fixed bug #339(c): if there are applicable methods not part of any
1507 long-form method-combination group, call INVALID-METHOD-ERROR.
1508 (reported by Bruno Haible)
1509 * fixed bug #361: the :FUNCTION initarg in the protocol for
1510 initialization of methods can now be used to override
1511 internally-produced optimized functions. (reported by Bruno
1513 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1514 system-provided lambda expression no longer cause warnings about
1515 unbound #:|pv-table| symbols.
1516 * bug fix: improved the handling of type declarations and the
1517 detection of violations for keyword arguments with non-constant
1519 * bug fix: potentially erronous calls to PATHNAME and
1520 MERGE-PATHNAMES were being flushed in some cases.
1521 (reported by Richard Kreuter)
1522 * bug fix: compiled calls to TYPEP were mishandling obsolete
1523 instances. (reported by James Bielman and Attila Lendvai)
1524 * bug fix: format strings with ~> without matching ~< no longer
1525 trigger an AVER, but signal an understandable error instead.
1526 (reported by Antonio Martinez)
1527 * bug fix: specifying an output-file without a pathname-type for
1528 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1529 of input-file instead of "fasl". (reported by Robert Dodier)
1530 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1531 (reported by James Y Knight).
1532 * bug fix: compiler-macros-function did not consider the environment
1533 argument for shadowing by local functions.
1534 * bug fix: compiler-macros expansion was inhibited by local INLINE
1536 * bug fix: inline expansions of known functions were subject to
1537 step-instrumentation in high debug policies, leading to problems
1538 with type-inference.
1539 * bug fix: compiler failed to differentiate between different CONS
1540 types in some cases.
1541 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1542 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1543 * bug fix: #368: incorrect use of expressed vs. upgraded array
1545 * bug fix: #306a: more precise unions of array types.
1546 * thread-safety improvements:
1547 ** CONDITION-WAIT could return early on Linux, if the thread was
1548 interrupted and subsequently continued with SIGCONT.
1549 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1551 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1552 * added support for the ucs-2 external format. (contributed by Ivan
1554 * minor incompatible change: pretty printing of objects of type
1555 (cons symbol) is, in the default pprint-dispatch-table, now
1556 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1558 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1559 called later in a class's lifetime, possibly as late as when the
1560 first instance of the class is created. Previously,
1561 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1562 class became finalizeable.
1563 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1564 for multibyte external-format streams. (thanks to "vbzoli")
1565 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1566 with :ALLOCATION :CLASS inherited from superclasses of the
1568 * fixed bug: anonymous classes can now be created using the :NAME
1569 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1570 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1571 * fixed bug: core-files saved with :EXECUTABLE T can again be
1572 executed when SBCL_HOME isn't set. (reported by James Knight)
1573 * fixed bug: toplevel LOCALLY forms with declarations could
1574 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1575 * fixed bug: printing from several different threads using different
1576 values of *print-case* could cause invalid output, due to
1577 some internal special variables of the printer not being bound
1578 thread-locally (reported by Max Mikhanosha)
1579 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1580 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1581 (reported by Pascal Costanza)
1582 * fixed bug: FINALIZE-INHERITANCE is called from
1583 REINITIALIZE-INSTANCE on classes when the class has previously
1584 been finalized, as required by AMOP.
1585 * minor code generation optimizations:
1586 ** better register allocation in CLOS dispatching functions
1587 ** overflow detection when coercing signed bytes to fixnums on x86-64
1588 ** is now implemented with one IMUL instruction instead of three shifts
1589 ** more efficient bit-vector access on x86 and x86-64
1590 ** more efficient access to raw structure slots on x86 and x86-64
1591 * fixed some bugs revealed by Paul Dietz' test suite:
1592 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1593 return its argument.
1595 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1596 * feature: thread support on Solaris/x86, and experimental thread support
1598 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1600 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1601 default method for SLOT-UNBOUND.
1602 * minor incompatible change: prevent the user from specializing the
1603 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1604 somewhat counter to the intent of the protocol, I (CSR) think, and
1605 additionally it just doesn't work in SBCL as currently
1606 implemented, thanks to optimizations (that are always valid for
1607 the other three SLOT-VALUEish functions, but not for the setter).
1608 * minor incompatible change: the :SB-LDB feature is now enabled by
1609 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1610 the low-level debugger.
1611 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1612 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1613 down to an SB-SYS:FD-STREAM, allowing direct communication in
1614 more cases. Temporary files and pipes are still used as a fallback
1616 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1617 on the non-reentrant C functions localtime(3) and gmtime(3).
1618 * bug fix: global optimization policy was not visible in LOCALLY and
1620 * bug fix: class objects can be used as specializers in methods.
1621 (reported by Pascal Costanza)
1622 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1623 with a type error. (reported by blitz_ on #lisp)
1624 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1625 failed with a type error. (reported by Pascal Bourguignon)
1626 * bug fix: merging pathnames against defaults with :DIRECTORY
1627 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1628 (reported by James Y Knight)
1629 * bug fix: saving large (>2GB) cores on x86-64 now works
1630 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1631 constant index and a (simple-array (signed-byte 32)) array
1632 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1633 error (patch by Robert J. Macomber)
1634 * feature: TIME now displays the amount of run-time spent in GC
1635 * bug fix: The debugger now does a better job of respecting
1636 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1637 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1638 workaround for bug 403.)
1639 * bug fix: floating point exception handling now works on FreeBSD
1640 (thanks to NIIMI Satoshi)
1641 * fixed some bugs revealed by Paul Dietz' test suite:
1642 ** MISC.641: LET-conversion were not supposed to work in late
1644 * improvements to the Win32/x86 port:
1645 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1646 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1648 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1649 * new feature: source path information is generated for macro-expansion
1650 errors for use in IDE's like Slime (thanks to Helmut Eller)
1651 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1652 * bug fix: compiler does not loop forever on an invalid type in
1654 * improvement: compilation of most CLOS applications is significantly
1656 * optimization: added a limited bytecode compiler for simple toplevel
1657 forms, speeding up compilation and FASL loading
1658 * bug fix: the statistical profiler now properly distinguishes anonymous
1661 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1662 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1663 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1664 into subclasses of the finalized class. Now user calls to
1665 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1666 system return before any subclasses are finalized.
1667 * minor incompatible change: The reader no longer ignores errors
1668 regarding non-existent packages in #+ and #- feature tests.
1669 * new feature: command line options --no-sysinit, --no-userinit to
1670 inhibit loading the corresponding init files
1671 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1672 for sending data through UDP sockets (thanks to François-René Rideau)
1673 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1674 error is signalled instead (thanks to François-René Rideau)
1675 * minor incompatible change: Error signalling behaviour of lexical
1676 operations violating package locks has changed slightly. Refer to
1677 documentation on package locks for details.
1678 * enhancement: EVAL can process IF-expressions without resorting to the
1680 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1681 constant-folded properly due to missing out-of-line functions.
1682 (reported by Mika Pihlajamäki)
1683 * bug fix: LISTEN sometimes returned T even in cases where no data was
1684 immediately available from the stream
1685 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1686 were reversed. (reported by Levente Mészáros)
1687 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1688 when given a vector displaced to an adjustable array. (reported
1690 * bug fix: derivation of float boundaries from numbers outside the
1691 appropriate float range (reported by John Wiseman)
1692 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1694 * bug fix: precomputing cache entries for generic functions with
1695 some subclasses of specializers as yet invalid does not attempt to
1696 fill a cache line with a negative offset. (reported by Levente
1698 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1699 allow condition class objects as arguments to DOCUMENTATION and
1700 (SETF DOCUMENTATION); only find and set documentation for
1701 structure names for the STRUCTURE doc-type. (suggested by Gary
1703 * improvements to the Win32/x86 port:
1704 ** (user-homedir-pathname) and default initialization file
1705 locations now know about the user's "Documents and Settings"
1706 directory (thanks to Yaroslav Kavenchuk)
1707 ** run-program is implemented (thanks to Mike Thomas)
1708 ** sockets support (thanks to Timothy Ritchey)
1709 ** better backtrace support (thanks to Alastair Bridgewater)
1710 ** sb-grovel supported
1711 ** asdf-install and sb-posix work somewhat
1712 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1713 * improvements to the Solaris/x86 port:
1714 ** works on Solaris 11/Solaris Express
1715 ** floating-point exception handling support
1716 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1717 * fixed some bugs revealed by Paul Dietz' test suite:
1718 ** REMOVE-METHOD returns its generic function argument even when
1719 the method is not one of the generic functions' methods.
1720 ** objects declared as MEMBER types can be admissible arguments to
1721 structure accessors.
1722 ** printing characters should simply be printed by the FORMAT ~:C
1724 ** compiler failure when compiling functions with hairy constant
1725 defaults for optional parameters.
1726 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1727 function, which is already optimized.
1729 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1730 * new platform: experimental support for SBCL x86/Darwin, including
1731 MacOS X 10.4.5 on Intel.
1732 * new feature: Unicode character names are now known to the system
1733 (through CHAR-NAME and NAME-CHAR).
1734 * new feature: the filesystem location of SBCL's core file is
1735 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1736 * minor incompatible change: the contrib modules SB-POSIX and
1737 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1738 this change is to make it easier to distribute
1739 location-independent binaries.
1740 * bug fix: as implied by AMOP, standardized classes no longer have
1741 slots named by external symbols of public packages. (reported by
1743 * optimization: calling functions via constant symbols -- as in
1744 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1745 via the function object as in (FUNCALL #'FOO).
1746 * optimization: on x86 and x86-64, the calling convention for the
1747 case of dealing with an unknown number of values has been altered
1748 to be friendlier to the prediction heuristics implemented,
1749 particularly with reference to CALL and RET pairing. (thanks to
1750 Alastair Bridgewater)
1751 * optimization: on x86, the code for access to thread-local symbol
1752 values and binding/unbinding of thread-local symbols is smaller.
1753 (thanks to Alastair Bridgewater)
1754 * enhancement: CONSTANTP is now able to determine constantness of
1755 more complex forms, including calls to constant-foldable standardized
1756 functions and some special forms beyond QUOTE.
1757 * fixed bug: occasional GC crashes on Solaris/x86
1758 * optimization: x86-64 supports stack allocation of results of simple
1759 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1760 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1761 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1762 (thanks to James Knight)
1763 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1764 by the standard (thanks to Stephen Compall)
1766 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1767 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1768 be used for bundling the runtime and the core file into one
1769 executable binary. This feature is not currently supported on all SBCL
1770 platforms. (thanks to James Bielman and NIIMI Satoshi)
1771 * new feature: a generational or ephemeral garbage collector is now
1772 the default on the PowerPC platform (both Linux and Darwin). The
1773 old Cheney (stop and copy) collector is a build-time option.
1774 (thanks to Cyrus Harmon, after Raymond Toy)
1775 * minor incompatible change: the method by which SBCL finds its
1776 contributed modules has changed; it no longer relies on symbolic
1777 links from an $SBCL_HOME/systems directory, but searches directly
1778 in the subdirectories of $SBCL_HOME.
1779 * enhancement: the dynamic heap size on the Linux/PPC platform is
1780 markedly larger, even using the older Cheney garbage collector.
1781 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1782 certain complicated string types. (reported by Gary King)
1783 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1784 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1785 * fixed bug: DOCUMENTATION on structures no longer signals an
1786 error if no structure type of the right name exists. (reported by
1788 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1789 applicable non-standard primary or :AROUND method on
1790 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1791 no longer cause unbound variable errors. (reported by Kevin Reid)
1792 * fixed bug: metacircle resolution in cases where methods have slots
1793 added before the slots from STANDARD-METHOD. (reported by Jean
1795 * fixed bug: the Power PC assembly code for calling into lisp
1796 sometimes computed its return address wrongly (depending on the
1797 15th bit of the address, fixed at link time). This used to
1798 manifest itself in a segmentation violation while building PCL.
1799 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1800 many others over the years)
1801 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1802 the stack pointer (treated as a signed integer) is negative.
1803 (thanks to Peter van Eynde)
1805 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1806 * new platform: experimental support for the Windows operating
1807 system has been added. (thanks to Alastair Bridgewater)
1808 * fixed several bugs in and robustified the PPC FFI (including
1809 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1810 * bug fix: allow non-simple string symbol names (reported by Paul
1812 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1814 * bug fix: saving a core corrupted callbacks on x86/x86-64
1815 * bug fix: closed a loophole in metacircularity detection and
1816 grounding in the PCL implementation of CLOS.
1817 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1818 (reported by tomppa on #lisp)
1819 * bug fix: clear the direction flag on Lisp -> C transitions, as
1820 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1821 (reported by Andrej Grozin and Hendrik Maryns)
1822 * optimization: major improvements to GC efficiency on GENCGC platforms
1823 * optimization: faster implementation of EQUAL
1824 * optimization: emit more efficient opcodes for some common
1825 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1826 * optimization: several other minor code-generation improvements on x86-64
1827 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1829 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1830 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1831 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1832 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1833 by ANSI as a generic function, and for consistency (SETF
1834 GENERIC-FUNCTION-NAME) is treated likewise.
1835 * fixed bug #233.b: make constraint propagation notice when a variable
1836 value is changed after it is referenced but before it is used
1837 * fixed bug #296: no more arbitrary behaviour from filenames with
1838 odd characters as --load arguments. (reported by Adam Warner)
1839 * fixed bug #390: :CHARACTER-SET pathname components now work as
1840 expected. (reported by Tim Daly Jr)
1841 * fixed bug #391: complicated :TYPE intersections in slot
1842 definitions no longer cause an error in PCL internals.
1843 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1844 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1845 returning the number of octets which would be written to the
1846 file-stream. (thanks to Robert J. Macomber)
1847 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1848 arguments to the internal stream functions. (thanks to David
1850 * bug fix: stack exhaustion is now handled on the x86/SunOS
1851 platform. (thanks to Daisuke Homma)
1852 * bug fix: more accurate ROOM results on GENCGC platforms
1853 * optimization: improved type inference for arithmetic-for
1854 index variables in LOOP
1855 * optimization: faster floating-point SQRT on x86-64
1856 * fixed some bugs revealed by Paul Dietz' test suite:
1857 ** DOCUMENTATION returns NIL instead of "" for method combinations
1858 that don't have a docstring
1860 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1861 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1862 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1863 therefore are not customizeable by user code (as seems to be at
1864 least permitted and maybe required by AMOP). As a consolation,
1865 however, the SBCL implementation of these functions now calls
1866 REINITIALIZE-INSTANCE as specified by AMOP.
1867 * bug fix: slot-definition documentation is propagated as per ANSI
1868 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1869 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1870 argument, as do eslotd initialization methods. (from Pascal
1871 Costanza's "Closer" project)
1872 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1873 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1875 * bug fix: it is now possible to have more than one subclass of
1876 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1877 (reported by Bruno Haible, Pascal Costanza and others)
1878 * bug fix: the dependent update protocol now works for generic
1879 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1880 and Pascal Costanza)
1881 * bug fix: condition-class instances corresponding to
1882 DEFINE-CONDITION forms are now created eagerly. (reported by
1883 Kalle Olavi Niemitalo on comp.lang.lisp)
1884 * bug fix: floating point printing is more accurate in some
1885 circumstances. (thanks to Simon Alexander)
1886 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1887 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1888 * bug fix: callbacks on OS X now preserve stack-alignment.
1889 (thanks to Cyrus Harmon)
1890 * enhancement: the x86-64 disassembler is much better at
1891 disassembling SSE instructions. (thanks to Lutz Euler)
1892 * enhancement: CHECK-TYPE on a variable now allows type-inference
1893 (thanks to Vincent Arkesteijn)
1894 * optimization: improved performance of EUC-JP external format.
1895 (thanks to NIIMI Satoshi)
1896 * optimization: performance improvements to IO on file streams of
1897 :ELEMENT-TYPE CHARACTER
1898 * optimization: much faster memory allocation on x86-64
1899 * optimization: faster garbage collections (latency and throughput)
1901 * optimization: faster bignum subtraction and division on x86 and x86-64
1902 (thanks to Lutz Euler)
1903 * optimization: more accurate type-inference for loops that use a
1904 floating point index variable or a negative step.
1906 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1907 * bug fix: add a workaround to SBCL looping infinitely at startup on
1908 Linux kernels with apparently buggy implementations of personality().
1909 (thanks to Svein Ove Aas)
1910 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1911 (thanks to David Lichteblau)
1912 * bug fix: local bindings shadow global symbol macros for
1913 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1914 * optimization: non-open coded uses of numeric comparison operators
1915 (e.g. >) no longer cons when called with more than one parameter
1916 on platforms supporting dynamic-extent allocation.
1917 * enhancement: saving cores with foreign code loaded is now supported
1918 on MIPS/Linux in addition to the previously supported platforms.
1919 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1920 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1921 * bug fix: division by zero in sb-sprof when no samples were collected
1922 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1923 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1924 (thanks to Alexander Kjeldaas)
1925 * new feature: ignoring the return values of destructive functions
1926 like NREVERSE signals a compile-time style-warning.
1927 (thanks to Kevin Reid)
1928 * new feature: the alignment of alien structure fields can be
1929 explicitly specified. (thanks to Cyrus Harmon)
1930 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1931 and dump core on SIGQUIT
1933 ** incompatible change: threads do not inherit values of specials
1934 from their parents (see manual)
1935 ** bug fix: threads stacks belonging to dead threads are freed by the
1936 next exiting thread, no need to gc to collect thread stacks anymore
1937 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1938 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1939 ** bug fix: dynamic variable and thread start related gc lossage
1940 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1942 * fixed some bugs revealed by Paul Dietz' test suite:
1943 ** SUBTYPEP is slightly more accurate on heinously complicated
1944 CONS types where some of the members have uncertain (in the
1945 NIL, NIL sense) type relationships to each other.
1947 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1948 no longer purified unless :PURIFY T is explicitly specified.
1949 ** Non-purified cores are significantly smaller than before
1951 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1952 * new feature: timers based on Zach Beane's excellent timer package
1953 * added support for the following external formats: koi8-u,
1954 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1955 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1956 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1957 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1958 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1959 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1960 * incompatible change: a threaded SBCL will no longer revert to
1961 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1962 * bug fix: interrupts are disabled until startup is complete; no
1963 more sigsegvs when receiving a signal to soon
1964 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1966 * bug fix: add a workaround for the memory randomization features in
1967 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1968 workaround will only be in effect on systems with the proc filesystem
1970 * bug fix: printing objects of type HASH-TABLE signals a
1971 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1973 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1974 have been running for over 50 days. (reported by Gilbert Baumann)
1975 * bug fix: the logic for getting names of functions gets less
1976 confused when confronded with alternate-metaclass
1977 funcallable-instances. (reported by Cyrus Harmon)
1978 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1979 consistent, even on internal alternate-metaclass objects.
1980 * bug fix: flush closure information collected by physical
1981 environment analysis prepass before the main pass. (bug reported
1983 * bug fix: compiler pack phase does not modify a hashtable, which is
1984 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1985 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1986 may be expanded. (reported by Alexander <malishev> on c.l.l)
1987 * bug fix: no more style-warnings when compiling code using LAST
1988 under high-SPEED low-SPACE settings. (reported by David Wallin
1990 * fixed some incompatibilities between SBCL's MOP and the MOP
1992 ** the METAOBJECT class is now implemented;
1993 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1994 STANDARD-OBJECT, as required;
1995 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1996 now compatible (as required by VALIDATE-SUPERCLASS); there
1997 remains a consistency requirement over the presence or absence
1998 of the FUNCTION class in the superclass list of finalized
1999 classes; see the manual for more details;
2000 ** the :AROUND method for COMPUTE-SLOTS on
2001 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2002 requested slot ordering.
2004 ** bug fix: parent thread now can be gc'ed even with a live
2006 ** bug fix: binding a special with PROGV to no value is not
2007 the same as that symbol not having been bound (thanks to
2009 ** bug fix: binding specials is thread safe (thanks to
2011 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2012 and SB-SPROF do not die with 'no handler for signal XX in
2013 interrupt_handle_now(..)' anymore
2014 ** bug fix: WITH-TIMEOUT works with multiple running threads
2015 * fixed some bugs revealed by Paul Dietz' test suite:
2016 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2017 the :method-class keyword argument.
2019 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2020 * new port: the Solaris operating system on x86 processors is now
2021 mostly supported, though some rough edges in the environment
2022 remain. (thanks to Daisuke Homma)
2023 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2024 space for its heap. (thanks to Thiemo Seufer)
2025 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2026 closures. (thanks to Thiemo Seufer)
2027 * minor incompatible change: eof selects abort in the debugger.
2028 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2029 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2031 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2032 deprecated, and will go away in a future revision of SBCL.
2033 * minor incompatible change: GC-ON and GC-OFF are no longer
2034 implemented with a counter, it does not matter how many times gc
2035 is switched on or off
2036 * bug fix: discriminating functions for generic function classes
2037 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2038 make invalid assumptions about method precedence order. (reported
2040 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2041 platforms. (thanks to Thiemo Seufer)
2042 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2043 * bug fix: correct pathname printing with printer escaping is on.
2044 (thanks to Kevin Reid)
2045 * bug fix: complex VOP definitions in "user-space" no longer trigger
2046 package locks. (reported by Zach Beane)
2047 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2048 for funcallable-instance functions, and is no different from
2050 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2051 characters in the current readtable. (reported by Nicholas Neuss)
2052 * bug fix: SUBTYPEP on various CONS types returns more a more
2053 accurate acknowledgment of its certainty.
2054 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2055 lists in some cases. This partially fixes bug 384.
2056 * flush all standard streams before prompting in the REPL and the
2058 * bug fix: signal handling and triggering gc do not conflict
2059 directly anymore, in particular a high frequency sb-sprof does
2060 not prevent gc from running
2061 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2062 approximation for timezone and DST information between the
2063 universal time epoch and the smallest negative 32-bit time_t.
2064 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2065 year 1899 so long as the encoded time is non-negative.
2066 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2067 the correct answer for non-constant rotate amounts when performing
2068 an inline 32-bit rotation.
2070 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2071 there is only one thread in the session
2072 ** bug fix: memory leak for streams created in one thread and
2073 written to in another
2074 ** bug fix: lockup when compiled with gcc4
2075 ** bug fix: race that allows the gc to be triggered when gc is
2077 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2078 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2080 ** bug fix: finished threads are gc'ed properly
2081 * fixed some bugs revealed by Paul Dietz' test suite:
2082 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2083 has arguments with a different set of applicable methods from
2084 the orignal arguments.
2085 ** The type error thrown by MAP now has a correct expected-type
2087 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2088 name a compiled function.
2089 ** Three MISC tests where a large bignum was improperly coerced to
2090 a float that couldn't represent that bignum during type
2091 derivation were fixed.
2092 ** SUBTYPEP can now handle types involving the negation of a
2093 list-form FUNCTION type.
2094 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2095 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2096 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2098 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2099 * New feature: Experimental support for bivalent streams: streams
2100 opened with :element-type :default now allow character and binary
2101 (unsigned-byte 8) I/O
2102 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2103 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2105 * bug fix: no more highly sporadic "couldn't check whether ~S is
2106 readable" when reading a stream and an interrupt hits in the middle
2107 of a select system call
2108 * compiler better recognizes complex arrays (reported by Eduardo
2110 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2111 for variables on SBCL built with linkage-tables. (reported by Luis
2113 * various error reporting improvements.
2114 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2115 (Thanks to Thiemo Seufer)
2116 * bug fix: nested reader invokations work correctly
2117 * bug fix: it is possible to have simultaneous references to foreign
2118 code and foreign data with the same name.
2120 ** added x86-64 support
2121 ** incompatible change: the threading api now works with thread
2122 objects instead of thread ids
2123 ** bug fix: threads are protected from signals and interruption when
2124 starting up or going down
2125 ** bug fix: a race where an exiting thread could lose its stack to gc
2126 ** bug fix: don't halt on infinite error in threads if possible
2127 ** fixed numerous gc deadlocks introduced in the pthread merge
2128 ** bug fix: fixed thread safety issues in read and print
2129 ** bug fix: debugger doesn't hang on session lock if interrupted at
2130 an inappropriate moment
2131 ** bug fix: run-program is now thread safe(r)
2132 ** bug fix: inner with-recursive-lock no longer releases the mutex
2133 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2134 * fixed some bugs revealed by Paul Dietz' test suite:
2135 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2136 EXPECTED-TYPE slots filled.
2137 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2139 ** MAKE-CONDITION accepts classes as type-designators.
2140 ** COMPILE may never return NIL.
2141 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2142 range before calling Unix time functions
2144 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2145 * numerous signal handling fixes to increase stability
2146 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2147 * minor incompatible change: we now correctly canonize default
2148 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2149 as per the MOP, rather than the historical (INITARG INITFUNCTION
2150 INITFORM). (reported by Bruno Haible)
2151 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2152 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2153 for more information.
2154 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2155 pathname is a directory pathname.
2156 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2157 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2159 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2160 :METACLASS argument in addition to a class name. (reported by
2161 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2162 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2163 (reported by Bruno Haible; patch from Gerd Moellmann)
2164 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2166 * bug fix: more cleanups to the floating point exception handling on
2167 x86-64 (thanks to James Knight)
2168 * bug fix: the compiler does not try to constant fold calls of
2169 COERCE and BIT-* functions when they return freshly constructed
2170 objects. (reported by Nikodemus Siivola and Paul Dietz)
2171 * optimization: improved the MIPS versions of generic (in the
2172 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2173 * optimization: direct conversion of (unsigned-byte 32) to floats on
2174 the PowerPC platform.
2175 * optimization: structure instances with raw slots now use less
2176 memory, and probably show better memory locality. (thanks to
2178 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2179 are treated as requests for stack allocation on the x86-64,
2180 Alpha-32, PPC and SPARC platforms.
2181 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2182 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2183 (thanks to Tony Martinez)
2185 ** gcing a dead thread can no longer lead to lockups
2186 ** threads block signals until they are set up properly
2187 ** errno is no longer shared by threads
2188 ** interrupt-thread restores the eflags register on x86
2189 ** fixed some lockups due to gc/thread interaction
2190 * fixed some bugs revealed by Paul Dietz' test suite:
2191 ** invalid dotted lists no longer raise a read error when
2192 *READ-SUPPRESS* is T
2193 ** signal an error if a symbol that names a declaration is used
2194 as the name of a type, or vice versa
2195 ** allow using the (declare (typespec var*)) abbreviation for
2196 (declare (type typespec var*)) with all type specifiers
2197 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2198 ** always return NIL from PPRINT-POP when OBJECT is NIL
2199 ** don't signal errors when pretty-printing malformed LABELS,
2200 FLET or MACROLET forms
2201 ** declarations in a DOLIST body are also in scope for the
2203 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2205 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2208 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2209 * fixed cross-compiler leakages that prevented building a 32-bit
2210 target with a 64-bit host compiler.
2211 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2212 opened with :IF-EXISTS :OVERWRITE.
2213 * fixed bug 281: error for an invalid qualifier in a short-form method
2214 combination method is not signalled until the faulty method is called.
2215 * bug fix: iteration variable type inferrer failed to deal with open
2216 intervals. (reported by Alan Shields)
2217 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2218 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2219 or more runtime options were provided to the sbcl binary.
2220 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2221 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2222 * optimization: there's now a fast-path for fixnum arguments in the
2223 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2224 * optimization: the code generated on x86-64 is more compact thanks
2225 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2226 * bug fix: floating-point exception handling now partly works on
2227 x86-64. (Thanks to James Knight)
2228 * improvement to the MIPS backend from Thiemo Seufer: C-style
2229 64-bit long long arguments and return values to alien functions
2231 * fixed some bugs revealed by Paul Dietz' test suite:
2232 ** the type-error signalled from WARN has a filled-in DATUM slot.
2233 ** the type-error required when a stream is not associated with
2234 a file has the stream as its datum.
2235 ** type-errors on single-floats on x86-64 no longer have
2236 :INVALID-OBJECT as the datum
2237 ** the type-errors signalled for invalid function names now have
2238 a correct expected type
2239 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2240 for structures defined with a :TYPE. Documentation strings for
2241 typed structures are no longer immediately discarded
2242 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2243 broadcast streams and synonym streams. FILE-LENGTH now also works
2244 on broadcast streams.
2246 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2247 * incompatible change: the --noprogrammer option, deprecated since
2248 version 0.7.5, has been removed. Please use the equivalent
2249 --disable-debugger option instead.
2250 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2252 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2253 inoperational for a while now) has been completely removed.
2254 * null lexical environments are now printed as #<NULL-LEXENV>,
2255 significantly reducing the amount of clutter in typical backtraces.
2256 * documentation on weak pointers, finalization, and after GC hooks
2257 has been added to the manual.
2258 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2259 as other specialized array types, is much faster. SUBSEQ and
2260 COPY-SEQ on such arrays have also been sped up.
2261 * optimization: EQL is now more efficient when at least other argument
2262 is known to be of type (OR FIXNUM (NOT NUMBER)).
2263 * fixed bug: the runtime is now less vulnerable to changes in the
2264 size of the SBCL object on OS X, and virtual memory is reserved for
2265 all spaces that need to be at a fixed address.
2266 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2267 * fixed bug: finalizers and after GC hooks that cause consing are now
2269 * fixed bug: compiler error messages and summaries are now printed to
2270 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2271 * fixed inference of the upper bound of an iteration variable.
2272 (reported by Rajat Datta).
2273 * fixed bug 211e: calling local functions with duplicated constant
2274 keyword argument no longer causes a bogus style warning about an
2276 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2277 ftype declaration to be disregarded. (reported by Dave Roberts)
2278 * fixed bug 373: caused by erronous compilation of references to alien
2279 variables in the runtime on ppc/darwin.
2280 * fixed bug 376: CONJUGATE type deriver.
2281 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2282 (reported by Baughn on #lisp)
2283 * a cross-compiler bug on non-x86 platforms has been identified and
2284 fixed. (thanks to Bruno Haible)
2285 * improvements to the MIPS runtime code for increased stability.
2286 (thanks to Thiemo Seufer)
2287 * increased the maximimum compact environment size to allow
2288 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2289 * partial workaround for bug 135: don't name the function we're
2290 calling for hairy cases of EVAL, so as not to accumulate one environment
2291 entry per call to EVAL. (reported by Kevin Reid)
2292 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2293 * optimization: type testing for non-vector arrays should be faster.
2294 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2296 * bug fix: setting 31st element of a bit vector to zero did not work
2298 * bug fix: redefining a class definition which failed due to a
2299 previous accessor / function clash now works (but see BUGS entry
2300 #380 for more problems in this area). (thanks to Zach Beane)
2301 * the long form of DEFINE-METHOD-COMBINATION disables method group
2302 checking when given a single method group with pattern *. (thanks
2304 * on x86 compiler supports stack allocation of results of simple
2305 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2306 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2307 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2308 * fixed some bugs related to Unicode integration:
2309 ** the restarts for recovering from input and output encoding
2310 errors only appear when there is in fact such an error to
2312 * fixed some bugs revealed by Paul Dietz' test suite:
2313 ** MISC.549 and similar: late transformation of unsafe type
2314 assertions into derived types caused unexpected code
2316 ** SCALE-FLOAT type deriver is less wrong.
2317 ** type derivers for EXP, LOG and similar functions compute result
2318 types for complex arguments better.
2319 ** (MISC.563) CONJUGATE type deriver works for very restricted
2321 ** out-of-line type testers for character strings are available.
2322 ** EQUAL compiler transform understands specialness of objects
2324 ** accessing double-floats stored on the stack now works on x86-64.
2325 ** debugger internals could sometimes create invalid lispobjs,
2326 resulting in GC crashes.
2327 ** MISC.548: type check weakening can convert required type into
2329 ** initialization forms for bindings are not in scope of free special
2332 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2333 * incompatible change: thread support for non-NPTL systems has
2334 been removed - locking is buggy and unreliable. A threaded
2335 SBCL build will now warn at startup and refuse to create
2336 new threads, unless futex support is detected in the kernel
2337 * incompatible change: the top level REPL now has only an ABORT
2338 restart associated with it, not TOPLEVEL and ABORT as it used to.
2339 TOP and TOPLEVEL are now available as debugger commands for
2340 returning to the top level.
2341 * incompatible change: forms evaluated in the REPL now use the
2342 global optimization policy.
2343 * incompatible change: user- and system-initialization files are
2344 no longer processed with LOAD, but by READ and EVAL; hence the
2345 global optimization policy, startup package, readtable, etc,
2347 * The .fasl file format number has been incremented because of
2348 various incompatible changes.
2349 * internal entry point details and argument counts no longer appear
2350 in backtraces unless explicitly requested by setting
2351 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2352 * built-in and standard functions no longer have names like "top
2353 level local call to FOO".
2354 * fixed bug 32: functions defined in non-null lexical environments
2355 now have more legible printed representation
2356 * fixed bug 33: functions defined in non-null lexical environemnts
2357 are now more amenable to inspection by INSPECT.
2358 * workaround for bug 354: XEPs no longer appear in backtraces unless
2359 explicitly requested.
2360 * fixed bug: receiving the signal which results from attempting to
2361 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2362 SIGBUS on other *BSDs) on architectures where the C stack is also
2363 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2364 to debugger confusion or wild instability. (reported by Cheuksan
2366 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2367 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2368 (reported by Lutz Euler)
2369 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2370 compiled code. (reported by Paul Dietz)
2371 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2372 specialized parameter to a method to something that is not TYPEP
2373 the specializer is now possible.
2374 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2375 face of package deletion.
2376 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2377 pathname. (reported by David Tolpin on c.l.l)
2378 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2379 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2380 STRING-STREAM and FILE-STREAM, respectively.
2381 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2382 than previously; in addition, its test suite is now run on build.
2383 (thanks to Luke Gorrie)
2384 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2385 * optimization: added a immediate representation for single-floats
2387 * fixed some bugs revealed by Paul Dietz' test suite:
2388 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2389 ** attempting to create a package with a colliding nickname causes
2390 correctable errors to be signalled.
2391 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2392 ** several x86-64 backend bugs related to sign-extension of immediate
2395 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2396 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2397 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2399 * fixed loading of multiply forward-referenced layouts.
2400 (thanks to Cheuksan Wang)
2401 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2402 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2403 (see COMPILE-FILE documentation for details of :PRINT option)
2404 * fixed bugs 19 and 317: fixed-format floating point printing is
2405 more accurate. This also fixes a bug reported by Adam Warner
2406 related to the ~@F format directive.
2407 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2409 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2410 dispatch table if the from-char is a dispatch macro character.
2411 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2412 by the wordsize no longer ignore the last word. (reported by Lutz
2414 * fixed bug in type checking of dynamic-extent variables. (reported
2416 * optimization: sequence traversal functions use their freedom to
2417 coerce function designators to functions.
2418 * optimization: code with many calls to CLOS methods specialized on
2419 CLOS classes has had redundant type checks removed.
2420 * optimization: added declarations to speed up operations that access
2421 the internal character database (for example STRING-UPCASE)
2422 * optimization: comparison operations between floats and sufficiently small
2423 fixnums no longer create extra rationals
2424 * fixed some bugs related to Unicode integration:
2425 ** portions of multibyte characters at the end of buffers for
2426 character-based file input are correctly transferred to the
2427 start of the buffer at the next read.
2428 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2429 passing it through to OPEN.
2430 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2431 argument given to internal calls to OPEN.
2432 ** the built-in comment readers (introduced by character sequences
2433 ";" and "#|") are more forgiving to encoding errors; they will
2434 STYLE-WARN and then attempt to resync the stream at a character
2435 boundary. (thanks to Teemu Kalvas)
2436 * fixed some bugs in the x86-64 port:
2437 ** Negative short int return values from c-calls are sign-extended
2439 ** The stack is aligned to 16-bytes for c-calls, as required by
2440 the ABI. (thanks to Cheuksan Wang)
2441 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2442 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2443 for enums. (thanks to Vincent Arkesteijn)
2444 ** Multiple small optimizations and bugfixes for floating point
2446 * fixed some bugs revealed by Paul Dietz' test suite:
2447 ** Space, Tab, Linefeed, Return and Page have the invalid
2448 secondary constituent character trait.
2449 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2451 ** WITH-INPUT-FROM-STRING should only update the index place on
2453 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2454 works more reliably.
2455 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2456 with one-dimensional arrays with fill pointers.
2457 ** TYPE-OF failed on a complex with an integer realpart and a
2459 ** compiler failure during type inference for the code of form
2460 (IF (EQL X (THE ...)) ...) (MISC.535).
2462 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2463 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2464 platform. The port supports 61-bit fixnums, large memory spaces
2465 and reloading shared object files.
2466 * enhancement: saving cores with foreign code loaded is now
2467 supported on ppc/Darwin in addition to the previously supported
2469 * enhancement: the statistical profiler now walks deeper into the
2470 call stack for more meaningful call-graphs and accrued time
2471 reports (x86/x86-64 only). It also now reports time spent in
2473 * enhancement: it is now possible to trace most individual methods
2474 of a generic function in addition to tracing the generic function
2476 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2478 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2479 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2480 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2481 produces an error. (thanks to Vincent Arkesteijn)
2482 * bug fix: NAMESTRING on pathnames with :WILD components in their
2483 directories works correctly. (thanks to Artem V. Andreev)
2484 * fixed bug 125: compiler preserves identity of closures. (reported
2486 * bug fixed: functions with &REST arguments sometimes failed with
2487 "Undefined function" when compiled with (DEBUG 3). (reported by
2489 * bug fix: overflow during compiling of setting element of a bit
2490 vector with constant index and value. (reported by Timmy Douglas)
2491 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2492 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2493 * on x86 compiler partially supports stack allocation of dynamic-extent
2495 * GO and RETURN-FROM do not check the extent of their exit points
2496 when compiled with SAFETY 0.
2497 * fixed some bugs related to Unicode integration:
2498 ** encoding and decoding errors are now much more robustly
2499 handled; it should now be possible to recover even from invalid
2500 input or output to the terminal. (thanks to Teemu Kalvas)
2501 ** provided a first cut at implementing STRING-TO-OCTETS and
2502 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2503 ** altered the SB-MD5 contributed module slightly, changing the
2504 interface just enough for it to be supportable for builds where
2505 lisp characters are not eight bits.
2506 * fixed some bugs revealed by Paul Dietz' test suite:
2507 ** the FORMATTER-generated functions for ~V[ conditionals require
2508 the correct number of arguments.
2509 ** READ-FROM-STRING returns the mandated second value when applied
2510 to displaced strings.
2511 ** the #\Rubout and #\Backspace characters are treated as invalid
2512 constituent characters by the tokenizer.
2514 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2515 * new feature: reloading changed shared object files with
2516 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2517 * new feature: references to foreign variables and functions
2518 can now be compiled and loaded before the corresponding shared
2519 object file is loaded, as long as the foreign definitions are
2520 available at runtime.
2521 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2522 supported. (thanks to Dan Debertin)
2523 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2524 just keywords. (thanks to Vincent Arkesteijn)
2525 * fixed bug #331: structure-class instances corresponding to
2526 DEFSTRUCT forms are now created eagerly.
2527 * fixed bug #345: backtraces from calls to undefined functions work
2528 on x86 as well. Related bug #61 is now also partially fixed on x86
2529 (backtraces from throws to unknown catch tags.)
2530 * bug fix: lambda-list parsing is now stricter vrt. order and number
2531 of lambda-list keywords.
2532 * bug fix: as specified by AMOP, an error is signalled if a
2533 class-option appears multiple times in a DEFCLASS form. (reported
2535 * bug fix: RANDOM can be compiled when the compiler derives the type
2536 of its numeric argument as a disjoint set of small integers.
2537 (reported by Paul Dietz)
2538 * bug fix: starting a core saved with shared objects loaded when
2539 those objects are not available no longer causes threaded SBCL to
2540 hang. (reported by Sean Ross)
2541 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2543 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2544 argument, which must always be NIL. (reported by Kalle Niemitalo)
2545 * bug fix: printing 1.0d+23 no longer results in an error.
2546 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2547 * bug fix: structure slot setters preserve evaluation order. (thanks
2549 * fixed some bugs related to Unicode integration:
2550 ** RUN-PROGRAM can allow its child to take input from a Lisp
2551 stream. (reported by Stefan Scholl)
2552 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2553 locales. (reported by Ken Causey)
2554 * fixed some bugs revealed by Paul Dietz' test suite:
2555 ** INCF, DECF and REMF evaluate their place form as specified in
2557 ** FORMATTER expands ~{ ~} iteration directives with V or #
2558 parameters correctly.
2559 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2560 consequent uses no arguments correctly.
2561 ** the system has a partial understanding of the (COMPLEX RATIO)
2563 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2566 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2567 * new feature: a build-time option (controlled by the :SB-UNICODE
2568 keyword feature, enabled by default) for building the system with
2569 support for the entire 21-bit character space defined by the
2571 * new feature: the system now has rudimentary external-format
2572 support; the primary user-visible change at this time is that
2573 characters with the high bit set (such as lower-case-e-acute) will
2574 print correctly to a terminal in a UTF-8 environment.
2575 * minor incompatible change: BASE-CHAR no longer names a class;
2576 however, CHARACTER continues to do so, as required by ANSI.
2577 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2578 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2579 has been moved to the SB-EXT package (temporarily re-exported from
2581 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2582 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2584 * fixed bug #351: better error-handlind and reporting for malformed
2586 * fixed bug #350: bignum-printing is now more memory-efficient,
2587 allowing printing of very large bignums, eg. (expt 2 10000000).
2588 (reported by Bruno Haible)
2589 * fixed bug #302: better primitive-type selection for intersection
2591 * fixed bug #308: non-graphic characters now all have names, as
2592 required. (reported by Bruno Haible)
2593 * bug fix: redefining a class with different superclasses now correctly
2594 removes it from the direct-subclasses of its previous superclasses.
2595 (reported by David Morse)
2596 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2597 new value now works. (reported by Bruno Haible)
2598 * bug fix: correct canonicalization of multiple non-standard slot
2599 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2600 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2601 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2602 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2603 now exists, an signals an error.
2604 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2605 during macroexpansion for non-iteration variables as well. (reported
2606 by Bruno Haible for CMUCL)
2607 * bug fix: Cyclic structures and unprintable objects in compiler
2608 messages no longer cause errors. (reported by Bruno Haible)
2609 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2610 and READ-FROM-STRING all now return a primary value of NIL if
2611 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2612 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2613 (reported by Bruno Haible for CMUCL)
2614 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2615 do not designate a condition. (reported by Bruno Haible for
2617 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2618 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2619 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2620 permitting resolution in favour of any of the conflicting symbols.
2621 (reported by Bruno Haible for CMUCL)
2622 * bug fix: EQUAL compiler optimizations is less aggressive on
2623 strings which can potentially compare true despite having distinct
2624 specialized array element types.
2625 * bug fix: unit enumerations can be defined without dividing by
2626 zero. (thanks to Vincent Arkesteijn)
2627 * FORMAT compile-time argument count checking has been enhanced.
2628 (report from Bruno Haible for CMUCL)
2629 * a partial workaround for the bug 262: the compiler does not try to
2630 inline-expand a local function doing RETURN-FROM from a deleted
2631 BLOCK. (thanks to Peter Denno for the bug report and to David
2632 Wragg for the simple test case)
2633 * fixed some bugs revealed by Paul Dietz' test suite:
2634 ** RENAME-PACKAGE allows all package designators as new package
2636 ** constraint propagation and lambda variable substitution are
2637 more cautious in dealing with partially deleted code.
2638 ** compiler sometimes lost reoptimization passes.
2639 ** CERROR, given a condition as condition designator, passes its
2640 remaining arguments to the continue format control without
2642 ** Case-altering FORMAT directives work correctly on non-ASCII
2644 ** The REAL type specifier handles bounds outside the floating
2645 point ranges without signalling FLOATING-POINT-OVERFLOW.
2646 ** Functions with IR1-transformations can create intercomponent
2647 references to global functions.
2648 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2650 ** FORMAT ~R treats a nil value for its first parameter correctly.
2652 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2653 * enhancement: saving cores with foreign code loaded is now
2654 supported on x86/NetBSD and sparc/Linux in addition to the previously
2655 supported platforms.
2656 * bug fix: on some platforms repeated installations caused multiple
2657 copies of HTML documentation to be installed -- should not happen
2658 any more. (reported by Stefan Scholl)
2659 * bug fix: parsing self-recursive alien record types multiple times
2660 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2661 original patch by Helmut Eller for CMUCL)
2662 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2663 (thanks to Richard Kreuter)
2664 * bug fix: defining classes whose accessors are methods on existing
2665 generic functions in other (locked) packages no longer signals
2666 bogus package lock violations. (reported by François-René Rideau)
2667 * bug fix: special variables as DEFMETHOD parameters no longer have
2668 associated bogus type declarations. (reported by David Wragg and
2670 * bug fix: read-write consistency on streams of element-type
2671 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2672 * bug fix: redefiniton of the only method of a generic function with
2673 no DEFGENERIC no longer emits a full WARNING. In addition,
2674 redefinition of generic functions with no DEFGENERIC to an
2675 incompatible lambda list now signals an error. (thanks to Zach
2677 * bug fix: DEFGENERIC now works even when there's a function of the
2678 same name in an enclosing lexical environment. (thanks to Zach
2680 * fixed compiler failure, caused by instrumenting code during
2681 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2682 * optimization: added loop analysis and improved register allocation
2683 * fixed some bugs revealed by Paul Dietz' test suite:
2684 ** POSITION on displaced vectors with non-zero displacement
2685 returns the right answer.
2686 ** (SIMPLE-STRING) is a valid type specifier for sequence
2688 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2690 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2691 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2693 ** The justification version of the FORMAT ~< directive treats
2694 non-zero minpad parameter correctly.
2696 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2697 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2698 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2699 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2700 the supported interface.
2701 * new feature: Single-stepping of code compiled with DEBUG 2 or
2702 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2703 * new feature: saving cores with foreign code loaded is now
2704 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2705 Timothy Moore's work for CMUCL)
2706 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2707 parameters to * instead of NIL if no initform is supplied.
2708 (reported by Johan Bockgaard)
2709 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2710 correctly when FUNCALL appears as the car of the form. Note:
2711 despite this FUNCALL forms are not currently subject to
2712 compiler-macro expansion. (port of Raymond Toy's fix for the
2713 same from CMUCL, reported by Johan Bockgaard)
2714 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2715 (thanks for Teemu Kalvas)
2716 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2717 case instead of terminating the iteration (thanks for Julian
2718 Squires, Sean Champ and Raymond Toy)
2719 * bug fix: incorrect expansion of defgeneric that caused a style
2720 warning. (thanks for Zach Beane)
2721 * bug fix: slot accessor effective method computation works properly
2722 for classes with multiple non-standard applicable methods on
2723 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2724 * on x86 compiler supports stack allocation of results of LIST and
2725 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2726 CMUCL implementation by Gerd Moellmann)
2727 * fixed some bugs revealed by Paul Dietz' test suite:
2728 ** FORMAT strings with both the ~<~:;~> form of the justification
2729 directive and pretty-printing directives cause an error.
2731 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2732 * incompatible change: the internal functions
2733 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2734 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2735 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2736 instead of the old functions.
2737 * new feature: on platforms where "dladdr" is available foreign
2738 function names now appear in backtraces. (based on Helmut Eller's
2740 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2741 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2743 * documentation: ASDF manual is now distributed with SBCL.
2744 * bug fix: SBCL can now load its contributed modules with REQUIRE
2745 even if the system-provided entries have been removed from
2746 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2748 * bug fix: backtraces involving undefined functions or assembly
2749 routines are more informative. (thanks to Brian Downing)
2750 * bug fix: mutually referent alien structures now work correctly.
2751 (reported by Rick Taube)
2752 * bug fix: structures defined by WITH-ALIEN can be referred to
2753 within other definitions in the same WITH-ALIEN.
2754 * bug fix: division operators (MOD, TRUNCATE and the like) with
2755 constant zero divisors and integer dividends no longer generate
2757 * bug fix: provide default methods for INPUT-STREAM-P and
2758 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2759 * bug fix: improve the detection and resolution of MOP metacycles
2760 (where effective method computation depends on the generic function
2761 having its effective method computed). (reported by Bruno Haible)
2762 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2763 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2764 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2765 * bug fix: pathnames with relative directory components can be
2766 represented relative to default pathnames.
2767 * optimization: in taking the GCD of bignums, reduce the two bignums
2768 to approximately the same size (using Euclid's algorithm) before
2769 applying the more sophisticated binary GCD. (thanks to Juho
2771 * optimization: COUNT on bitvectors now operates word-at-a-time.
2772 * optimization: ASH with a positive, but not necessarily constant,
2773 (leftwards) shift, when in a modular context, is compiled to a
2775 * fixed some bugs revealed by Paul Dietz' test suite:
2776 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2777 if the corresponding argument is NIL.
2778 ** FORMAT directives accepting a minpad parameter treat negative
2780 ** literal commas as character parameters to FORMAT directives are
2782 ** literal spaces directly after ~<Newline> directives within a
2783 format-logical-block (~:< ~@:>) do not induce :FILL-style
2784 conditional newlines.
2785 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2786 as specified: it no longer includes conditional newlines).
2787 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2789 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2790 :PER-LINE-PREFIX argument does not evaluate to a string.
2792 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2793 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2794 the manual for details; for now, package locks can be disabled by
2795 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2796 if no major problems are found then it is likely that they will be
2797 compiled in unconditionally.
2798 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2799 unsupported operators on all platforms. To load a shared library
2800 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2801 object file, link it into a shared library outside of SBCL and
2802 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2804 * bug workaround: ROOM T and the GC were not working together
2805 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2806 reporting facility aren't preserved. That reporting has been
2807 disabled, so now until and unless someone figures out how to make it
2808 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2809 * minor incompatible change: as threatened around sbcl-0.8.0, the
2810 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2811 The symbols are also exported from SB-PCL for backwards
2812 compatibility, but more so than before SB-PCL should be treated as
2813 an implementation-internal package.
2814 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2816 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2817 It is known as of this release not to work on the Alpha, however.
2818 * fixed bug #167: errors signalled due to illegal syntax in method
2819 bodies are now more legible.
2820 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2821 designators and can hence be used with TYPEP.
2822 * fixed bug #333: CHECK-TYPE now ensures that the type error
2823 signalled, if any, has the right object to be accessed by
2824 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2825 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2826 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2828 * fixed bug #334: programmatic addition of slots using specialized
2829 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2830 and :ALLOCATION :CLASS slots.
2831 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2832 float exponents. (rereported by Peter Seibel)
2833 * fixed a bug: #\Space (and other whitespace characters) are no
2834 longer considered to be macro characters in standard syntax by
2835 GET-MACRO-CHARACTER.
2836 * fixed bug: initialization of condition class metaobjects no longer
2837 causes an instance of the condition to be created. (reported by
2839 * fixed bug: it is now possible to have slots such that
2840 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2841 description is neither :INSTANCE nor :CLASS.
2842 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2843 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2844 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2845 non-standard SLOT-DEFINITION-ALLOCATION values.
2846 * fixed bugs: various race conditions handling exiting threads.
2847 CL-PPCRE's thread torture test now passes.
2848 * fixed arguably-a-bug: GC time proportional to number of threads in
2849 system even when most of them are idle
2850 * optimization: improved performance of BIT and SBIT on bit-vectors.
2851 * .fasl file incompatibility: The fasl file version number has
2852 been incremented because of changes associated with package locks.
2854 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2855 * minor incompatible change: the system no longer provides
2856 optimization hints (conditions which are TYPEP
2857 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2858 mode; these hints are still emitted when higher SPEED optimization
2860 * new contrib module: a sampling profiler (profiling by statistical
2861 sampling, rather than by instrumenting functions) is available as
2862 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2863 * the behaviour of the standard function ED is now customizeable by
2864 third parties through a hook variable: see ED's documentation
2865 string for information on the protocol.
2866 * the compiler no longer emits efficiency notes for (FUNCALL X)
2867 when the type of X is uncertain under default optimization
2869 * fixed bug 276: mutating a binding of a specialized parameter to a
2870 method to something that is not TYPEP the specializer is now
2872 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2873 exhibit the required behaviour on the x86 platform. (thanks to
2874 Peter van Eynde, Eric Marsden and Bruno Haible)
2875 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2876 even for difficult arguments. (reported by Peter Graves)
2877 * fixed bug 141a: the backquote printer now descends quoted
2879 * fixed another bug in backquote printing: no more destructive
2880 modification of the form's list structure. (reported by Brian
2882 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2883 move between its address being taken and the call to
2884 interrupt_thread, fixing a crashing race condition.
2885 * the SB-POSIX contrib implementation has been adjusted so that it
2886 no longer exhibits ridiculously poor performance when constructing
2887 instances corresponding to C structs.
2889 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2890 * minor incompatible change: the sb-grovel contrib now treats C
2891 structures as alien (in the sense of SB-ALIEN) objects rather than
2892 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2893 has implications for memory management of client code
2894 (sb-grovel-returned objects must now be manually managed) and for
2895 type safety (alien objects now have full types).
2896 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2897 used to control emission of compiler diagnostics, rather than the
2898 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2899 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2900 quality should be considered deprecated.
2901 * install.sh now installs the user manual as well
2902 * (not quite a new documentable feature, but worth considering in
2903 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2904 beginnings of a semantically meaningful condition hierarchy is
2905 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2907 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2908 designator as the defaults argument.
2909 * fixed bug: Displaced arrays whose displaced-to array has become
2910 too small now cause ARRAY-DIMENSION to signal an error, providing
2911 for safer bounds-checking. (reported by Bruno Haible)
2912 * fixed bug: DEFCLASS slot definitions with identical :READER and
2913 :WRITER names now signal a reasonable error. (reported by Thomas
2915 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2917 * fixed bug: Invalid slot specification errors now print correctly.
2918 (thanks to Zach Beane)
2919 * fixed bug 320: Shared to local slot value transfers in class
2920 redefinitions now happen corrently from superclasses as
2921 well. (reported by Bruno Haible)
2922 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2924 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2925 improper lists correctly. (reported by Bruno Haible)
2926 * fixed bug 313: source-transform for <fun-name> was erroneously
2927 applied to a call of a value of a variable with name <fun-name>.
2928 (reported by Antonio Menezes Leitao)
2929 * fixed bug 307: The obsolete instance protocol ensures that
2930 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2931 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2932 remove dead unknown-values globs from the middle of the stack.
2933 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2934 easier to resume long computations after using *BREAK-ON-SIGNALS*
2935 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2936 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2937 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2938 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2939 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2940 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2942 * fixed a (fairly theoretical) bug in string printing: if
2943 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2944 does not have array-element-type equal to the most general string
2946 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2947 function name. (thanks to Nikodemus Siivola)
2948 * fixed bug: compile-time format string checker failed on
2949 non-closed ~{. (reported by Thomas F Burdick)
2950 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2951 don't warn on legal loop code involving more than one aggregate
2952 boolean. (thanks to Nikodemus Siivola)
2953 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2954 in keyword position to MAKE-PACKAGE was not being reported as
2956 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2957 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2959 * fixed bugs 280 and 312: the checking for multiple definitions in a
2960 file is less likely to become confused by uses of inline
2962 * fixed bug: the #S reader macro performs the keyword coercion
2963 specified for slot names. (reported by Kalle Niemitalo)
2964 * fixed bug: lambda lists may contain symbols whose names start with
2965 & but are not lambda-list-keywords; their occurrence triggers a
2967 * fixed bug 321: define-method-combination argument lambda lists do
2968 not cause invalid code to be generated when &optional or &aux
2969 variables have default values. (reported by Bruno Haible)
2970 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2971 have CLOS classes; this appears also to have fixed reported
2972 instability in stack exhaustion detection.
2973 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2974 MUFFLE-WARNING when no associated restart is present is now
2976 * optimization: rearranged the expansion of various defining macros
2977 so that each expands into only one top-level form in a
2978 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2980 * optimization: used a previously little-used slot in symbols to
2981 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2983 * fixed some bugs revealed by Paul Dietz' test suite:
2984 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2986 ** Fixed an optimization bug related to inheritance of initforms
2987 from local to shared slots.
2988 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2989 ** CAST optimizer forgot to flush argument derived type.
2990 ** print/read consistency on floats is now orders of magnitude
2991 more likely. (thanks also to Bruno Haible for a similar report
2993 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2994 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2995 for objects of type REAL. Make it so.
2996 ** SXHASH is specified (infelicitously) to respect similarity,
2997 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2998 it so. (thanks to Markus Ziegler)
2999 ** on the Alpha, the compiler succeeds in compiling functions
3000 returning a known number of arguments greater than 63.
3001 ** fixed handling of invalid NIL arguments in keyword position
3003 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3005 ** provided a readably-printable representation for RANDOM-STATE
3007 ** ensured that pathnames, where they have a namestring, always
3008 print using #P"..." syntax.
3010 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3011 * Support for the forthcoming 2.0 version of the NetBSD kernel
3012 running on x86 hardware has been added. (thanks to Perry
3013 E. Metzger most immediately, and others for their past work)
3014 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3015 current release version; SBCL's OpenBSD support had been broken
3016 since about the time of OpenBSD's switch to ELF binary format.)
3017 * [placeholder for DX summary]
3018 ** user code with &REST lists declared dynamic-extent, under high
3019 speed or space and low safety and debug optimization policy.
3020 * The manual has been converted to Texinfo format and the debugger
3021 chapter from the cmucl manual has been added.
3022 * A facility has been added to extract documentation strings from
3023 sbcl and store them as Texinfo-formatted snippets for inclusion in
3024 the manual (via Texinfo's @include directive)
3025 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3026 the test case to Dave Roberts)
3027 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3028 pointers. (reported by Sean Ross)
3029 * bug fix: PROFILE output is printed nicely even for large numerical
3030 values. (thanks to Zach Beane)
3031 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3032 greater than 32 handle EOF correctly.
3033 * bug fix: on X86 an immediate argument of the IMUL instruction is
3034 correctly printed in disassembly. (thanks to Lutz Euler)
3035 * bug fix: class slots in redefined classes preserve their old
3036 values. (thanks to Bruno Haible and Nikodemus Siivola)
3037 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3038 succeeds. (reported by Marco Baringer)
3039 * fixed some bugs revealed by Paul Dietz' test suite:
3040 ** READ-SEQUENCE now works on ECHO-STREAMs.
3041 ** RATIONALIZE works more according to its specification. (thanks
3044 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3045 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3046 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3047 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3048 should matter to you only if you rebind the printer control
3049 variables and then find you want different bindings in the
3050 debugger than in the ordinary execution of your program.)
3051 * The runtime build system has been tweaked to support building
3052 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3053 assembler and linker. (thanks to Nikodemus Siivola)
3054 * Unbound, undefined, undeclared variables now trigger full
3055 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3056 more often programmer error than deliberate exploitation of undefined
3058 * optimization: the hash algorithm for strings has changed to one
3059 that is less vulnerable to spurious collisions. (thanks to Juho
3061 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3062 needless bounds checking. (thanks to Juho Snellman)
3063 * optimization: implemented multiplication as a modular
3064 (UNSIGNED-BYTE 32) operation on the PPC backend.
3065 * fixed some bugs revealed by Paul Dietz' test suite:
3066 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3068 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3069 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3070 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3072 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3074 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3076 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3077 their output stream on EOF from read.
3078 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3079 have been read to end-of-file.
3080 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3082 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3083 description of determination of which consecutive characters
3085 ** Printing the "Space" character with escaping on now yields "#\\ ",
3086 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3087 ** Reading floating-point numbers with *READ-BASE* set to a number
3088 less than 10 works correctly.
3089 ** Reading floating-point numbers with *READ-BASE* set to a number
3090 more than 10 works correctly.
3091 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3092 the readtable currently in effect.
3094 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3095 * minor incompatible change: parsing of namestrings on a physical
3096 (Unix) host has changed; numbers after the final #\. in a
3097 namestring are no longer interpreted as a version field. This is
3098 intented to be largely invisible to the user, except that the
3099 meaning of the namestring "*.*.*" has changed: it now refers to a
3100 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3101 should usually be replaced by
3102 (make-pathname :name :wild :type :wild :version :wild)
3103 with the added benefit that this is more likely to be portable.
3104 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3105 option to OPEN now signals an error if the file being opened
3106 exists; this may have an impact on existing code.
3107 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3108 signals received, on the PowerPC platforms (both Linux and
3109 Darwin). (thanks to Pierre Mai for pointing out the location of
3111 * several fixes on OS X: The system now builds and runs cleanly on
3112 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3113 (thanks to Brian Mastenbrook)
3114 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3115 second-resolution: integer multiples of 1/3600 between -24 and 24.
3116 (thanks to Vincent Arkesteijn)
3117 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3118 type when called with 1 argument; PEEK-CHAR checked type of
3119 PEEK-TYPE only after having read first character from a
3120 stream. (reported by Peter Graves)
3121 * bug fix: the garbage collector now has much better locality
3122 behaviour, and in particular no longer treats all memory as being
3123 exhausted when many small objects point to each other in a deeply
3125 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3126 recognized as being TYPEP their class.
3127 * bug fix: the PUSHNEW documentation string has been corrected.
3128 (thanks to Vincent Arkesteijn)
3129 * bug fix: defaulting of the value for the last of an atypically
3130 large number of multiple values being bound was not being
3131 performed correctly on the Alpha or PPC platforms
3132 * optimization: implemented multiplication as a modular
3133 (UNSIGNED-BYTE 32) operation on the x86 backend.
3134 * optimization: SEARCH on simple-base-strings can now be open-coded.
3135 (see also contrib/compiler-extras.lisp for inspiration for
3136 teaching the compiler about the Boyer-Moore algorithm).
3137 * value, returned by MAX (and MIN) called with several EQUALP, but
3138 not EQL, arguments now does not depend on compiler settings.
3139 * fixed some bugs revealed by Paul Dietz' test suite:
3140 ** in stack analysis liveness information is propagated from
3141 non-local entry points.
3142 ** pathwise CAST removing failed when the CAST node did not start
3144 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3145 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3147 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3148 host is already defined.
3149 ** RENAME-FILE works on streams instead of signalling an internal
3151 ** PEEK-CHAR uses the current readtable when determining whether
3152 or not a character is whitespace.
3153 ** MERGE-PATHNAMES handles the case when the pathname does not
3154 specify a name while the default-pathname specifies a version.
3155 ** Pathnames now stand a better chance of respecting print/read
3157 ** Attempting to use standardized file system operators with a
3158 pathname with invalid :DIRECTORY components signals a
3160 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3162 ** DIRECTORY on logical pathnames is more correct.
3163 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3164 signal a TYPE-ERROR if their argument is not a stream.
3165 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3166 designator argument does not designate a stream.
3167 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3168 examining the synonym.
3169 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3171 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3172 element-type larger than ([UN]SIGNED-BYTE 32).
3174 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3175 * When built with the :SB-FUTEX feature, threaded builds now take
3176 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3177 for faster/more reliable mutex and condition variable support.
3178 * Incompatible change (but one you probably shouldn't have been using
3179 anyway): the interface and code for arbitrating between multiple
3180 threads in the same user session has been redesigned.
3181 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3182 error when called without an explicit environment argument.
3183 (thanks to Nikodemus Siivola)
3184 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3185 confused about their position. (thanks to Adam Warner and Gerd
3187 * bug fix: Pretty printing backquoted forms with unquotations in the
3188 argument list position of various code constructs such as LAMBDA
3189 now works correctly. (reported by Paul Dietz)
3190 * bug fix: Pretty printing unquotations no longer loses all
3191 stream position information.
3192 * optimization: performance of string output streams is now less
3193 poor for multiple small sequence writes.
3194 * optimization: performance of CSUBTYPEP in the presence of complex
3195 expressions involving CONS and NOT many times has been improved.
3196 (reported by Paul Dietz)
3197 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3199 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3200 streams for the REPL, for the debugger, and so on. (thanks to
3202 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3203 * fixed some bugs revealed by Paul Dietz' test suite:
3204 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3205 is ignored if it is too small, rather than propagating through
3206 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3207 ** extremely complex negations of CONS types were not being
3208 sufficiently canonicalized, leading to inconsistencies in
3210 ** VALUES tranformer lost derived type.
3212 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3213 * fixed a bootstrapping bug: the build process no longer assumes
3214 that the various BOOLE-related constants have the same value in
3215 host and target lisps. (noted by Paul Dietz' test suite on an
3216 SBCL binary built from CLISP)
3217 * The system can now be dynamically linked on the MIPS platform,
3218 which enables dynamic loading of foreign code from Lisp. (thanks
3219 to Ralf Baechle for discussions on the MIPS ABI)
3220 * The system now records debugging information for its own source
3221 files in a filesystem-position-independent manner, relative to
3222 the "SYS" logical host.
3223 * fixed a compiler bug: MV-LET convertion did not check references
3224 to the "max args" entry point. (reported by Brian Downing)
3225 * tweaked disassembly notes to be less confident about proclaiming
3226 some instruction as an LRA. (thanks to Brian Downing)
3227 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3228 now each have their own history, command character, and other
3229 characteristics. (thanks to David Lichteblau)
3230 * fixed some bugs revealed by Paul Dietz' test suite:
3231 ** compiler failure in compiling LOGAND expressions including a
3233 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3234 shift greater than 32.
3235 ** FLUSH-DEST did not mark blocks for type check regeneration.
3236 ** HANDLER-CASE failed to accept declarations in handler clauses
3237 in some circumstances.
3239 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3240 * New code in contrib/sb-introspect (still probably not entirely
3241 stable yet) provides some support for smart Lisp development
3242 environments like SLIME.
3243 * The conditions signalled for errors occurring when loading .fasl
3244 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3245 in a way which should help ASDF recover gracefully.
3246 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3247 stuff has been cleaned up. If you code contrib/ stuff, this might
3248 affect you, and you can look at contrib/README, contrib/STANDARDS,
3249 and/or the 0.8.4.27 diff to check.
3250 * In full calls the compiler now does not generate checks for declared
3251 argument types for all arguments.
3252 * various threading fixes
3253 ** and some experimental patches which didn't make it into
3254 the main tree for this release, but which are shipped in
3255 contrib/experimental-thread.patch as a possible fix for some
3256 failures (deadlock, spinning...) in GC-intensive multithreaded
3258 * fixed PPC build problem (source code incompatibility of different
3259 library versions): added offsetof() hackery which attempts to divine
3260 where glibc maintainers put uc_mcontext today
3261 * fixed bug 282: compiler does not trust type assertions while passing
3262 arguments to a full call.
3263 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3264 &OPTIONAL VALUES type parameter.
3265 * fix bug 214: algorithm for noting rejected templates is now more
3266 similar to that of template seletion. (also reported by rydis on
3268 * fixed bug 141b: printing backquoted information readably and prettily
3269 inserts a space where necessary.
3270 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3271 (CHARACTER 10) are now reported as errors, rather than propagated
3272 as unknown types. (reported by piso on #lisp)
3273 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3274 with values NIL and :ERROR. (thanks to Milan Zamazal)
3275 * fixed bug 191c: CLOS now does proper keyword argument checking as
3276 described in CLHS 7.6.5 and 7.6.5.1.
3277 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3278 longer raise an error; further, using a list as a for-as-arithmetic
3279 counter now raises a meaningful error.
3280 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3281 now understood by sequence creation functions such as MAKE-SEQUENCE
3283 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3284 a STRING-INPUT-STREAM.
3285 * compiler enhancement: SIGNUM is now better able to derive the type
3287 * type declarations inside WITH-SLOTS are checked. (reported by
3289 * fixed some bugs revealed by Paul Dietz' test suite:
3290 ** incorrect optimization of TRUNCATE for a positive first
3291 argument and negative second.
3292 ** compiler failure in let-convertion during flushing dead code.
3293 ** compiler failure while deriving type of TRUNCATE on an
3294 interval, containing 0.
3295 ** ASH of a negative bignum by a negative bignum count now returns
3297 ** intersection of CONS types now canonicalizes properly, fixing
3298 inconsistencies in SUBTYPEP.
3300 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3301 * incompatible change: The --disable-debugger command line
3302 option now clobbers the debugger at a more fundamental
3303 level, by redefining #'INVOKE-DEBUGGER instead of by
3304 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3305 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3306 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3307 enter the debugger REPL and then suffer recursive errors
3308 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3309 while under the new system, BREAK in --disable-debugger mode
3310 terminates the system just as an unhandled error would.
3311 * fixed compiler performance when processing loops with a step >1;
3312 * bug fix: DOCUMENTATION now retrieves generic function
3313 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3314 support has been systematized, and now supports the methods
3315 specified by ANSI, along with a default method and a method for
3316 slot documentation. (reported by Nathan Froyd)
3317 * bug fix: effective methods associated with a generic function are
3318 no longer cached over a change of that generic function's method
3319 combination. (reported by Andreas Fuchs)
3320 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3321 names a non-existent directory. (thanks to Andreas Fuchs)
3322 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3323 the PPC platform, lead to stack corruption; this has been fixed.
3324 (reported by Rainer Joswig)
3325 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3326 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3327 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3328 arithmetic in general, is now much more reliable on the PPC
3330 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3331 platform now returns the right answer.
3332 * optimization: restored some effective method precomputation in
3333 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3334 precomputation is now tunable.
3335 * optimization: compiler-internal data structure use has been
3336 reviewed, and changes have been made that should improve the
3337 performance of the compiler by about 20%.
3338 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3339 simple-base-strings and simple-bit-vectors is improved.
3340 * optimization: the optimization of 32-bit logical and arithmetic
3341 functions introduced in version 0.8.3 on the x86 has been
3342 implemented on the mips, ppc and sparc platforms; an
3343 implementation of the same facility, but for 64-bit arithmetic,
3344 has been added for the alpha.
3345 * microoptimization: the compiler is better able to make use of the
3346 x86 LEA instruction for multiplication by constants.
3347 * bug fix: in some situations compiler did not report usage of
3348 generic arithmetic in (SPEED 3) policy.
3349 * bug 145b fix: compiler used wrong type specifier while converting
3350 MEMBER-types to numeric.
3351 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3353 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3354 index argument now works properly on the Alpha platform.
3355 * bug fix: floating point exception treatment on the Alpha platform
3357 * bug fix: FILE-POSITION works much better on string input and
3358 output streams. (thanks to Nikodemus Siivola)
3359 * bug fix: many threading/garbage collection symptoms sorted.
3360 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3361 might be pseudo-atomic.
3362 * internal change: Stopping for GC is now done with signals not
3363 ptrace. GC is now done in whichever thread wanted it, instead of
3365 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3367 * bug fix: result form in DO is not contained in the implicit
3369 * incompatible change: ICR structure is changed; the value part of
3370 CONTINUATION is now called LVAR; corresponding functions are
3371 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3372 * added type deriver for ISQRT (thanks to Robert E. Brown).
3373 * bug fix: better support for loading from the command line when an
3374 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3376 * fixed some bugs revealed by Paul Dietz' test suite:
3377 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3378 ** ROUND and FROUND now give the right answer when given very
3379 small float arguments.
3380 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3382 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3383 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3384 ** LCM should return a non-negative integer.
3385 ** PARSE-INTEGER returned the index of a terminator instead of the
3386 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3387 ** PARSE-INTEGER returned an incorrect index being applied to a
3389 ** LCM with two arguments of 0 returns 0 rather than signalling
3391 ** unsigned addition of a 32-bit constant with the high bit set no
3392 longer causes an internal compiler error on the x86.
3393 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3394 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3395 with negative last argument.
3396 ** byte specifiers with zero size and position no longer cause
3397 an error during type derivation.
3398 ** bignum multiplication on the Alpha platform now returns the
3400 * porting: The system now builds on SuSE AMD64, although it still
3401 generates a 32-bit binary.
3402 * .fasl file incompatibility: The fasl file version number has
3403 been incremented (because of the changes to internal compiler
3404 data structures referred to above).
3406 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3407 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3408 more accurately, on the Darwin kernel running on PowerPC hardware.
3409 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3410 * Compiler code deletion notes now signal a condition of type
3411 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3412 an associated MUFFLE-WARNING restart.
3413 * The compiler now performs limited argument count validation of
3414 constant format strings in FORMAT, and where appropriate in ERROR,
3415 CERROR and WARN. (thanks to Gerd Moellmann)
3416 * New ASDF-INSTALL contrib can be used for automatic download and
3417 installation of third-party Lisp code from CCLAN or other sites
3419 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3420 which forces another thread to execute a function supplied by the
3422 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3423 now accept and act upon their :ELEMENT-TYPE keyword argument.
3424 (reported by Martin Atzmueller, Edi Weitz)
3425 * bug fix: FILE-POSITION now accepts position designators up to
3426 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3427 is the greater. (thanks to Patrik Nordebo)
3428 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3429 Kalle Olavi Niemitalo)
3430 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3431 printable. (reported by Eric Marsden)
3432 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3433 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3434 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3435 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3436 (thanks to Stig Sandoe)
3437 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3438 UNREAD-CHAR now correctly includes the unread character in the
3439 target sequence. (thanks to Gerd Moellmann)
3440 * bug fix in threaded builds: the system can now be suspended and
3441 resumed by shell job control with minimal disruption.
3442 * bug fixes in times and timezones >2038AD
3443 * better handling of "where is GNU make?" problem in build scripts
3444 (thanks to Nikodemus Siivola)
3445 * new optimization: inside a named function any reference to a
3446 function with the same name is considered to be a self-reference;
3447 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3448 optimization quality.
3449 * new optimization on x86: logical functions and + now have
3450 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3451 used when the result is truncated to 32 bits.
3452 * VALUES declaration is partially enabled.
3453 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3454 * fixed some bugs revealed by Paul Dietz' test suite:
3455 ** The system now obeys the constraint imposed by
3456 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3457 types form a lattice under type intersection.
3458 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3459 ** ASSOC now ignores NIL elements in an alist.
3460 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3461 and (1+ MOST-POSITIVE-FIXNUM) answers.
3462 ** The addition of a method with invalid qualifiers to a generic
3463 function does not cause an error to be signalled immediately;
3464 a warning is signalled, and the error is generated only on
3465 calling the generic function.
3466 * changed .fasl file version number, in part to add type codes for
3467 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3468 obscure ANSI requirements
3470 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3471 * fixed bug 148: failure to inline-expand a local function left
3472 garbage, confusing the compiler.
3473 * fixed bugs 3cd: structure slot readers perform type check if the
3474 slot can have an invalid value (i.e. it is either not initialized
3475 or can be written with a less specific slot writer).
3476 * bug fix: the compiler now traps array references to elements off
3477 the end of an array; previously, the bounds checking in some
3478 circumstances could go off-by-one.
3479 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3481 * type declarations for array element types now obey the description
3482 on the CLHS page "Declaration TYPE", as per discussions on
3483 sbcl-help around 2003-05-08. This means that a declaration
3484 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3485 declaration, all references to BAR will be asserted or assumed
3486 (with THE, so dependent on compiler policy) to involve objects of
3487 type FOO. Note that no such declaration is implied in
3488 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3489 * declared types of functions from the "Conditions"
3490 chapter. (reported by Paul Dietz)
3491 * bug fix: CERROR accepts a function as its first argument.
3492 * bug fix: NTH an NTHCDR accept a bignum as index
3493 arguments. (reported by Adam Warner)
3494 * optimization: character compare routines now optimize comparing
3495 against a constant character. (reported by Gilbert Baumann)
3496 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3497 argument now works properly on the MIPS platform.
3498 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3499 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3500 declared to have a functional type, does not cause an error
3502 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3503 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3504 * fixed bug: if last continuation of a deleted block has a
3505 destination, this destination should be deleted too. (reported by
3507 * fixed a bug in the bootstrap process: the host compiler's values
3508 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3509 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3510 test case from Patrik Nordebo)
3511 * improved the ability of the disassembler on the PPC platform to
3512 provide helpful disassembly notes.
3513 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3514 the class in more cases than previously.
3515 * bug fix: FILE-POSITION now understands :START and :END for
3516 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3517 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3518 8) data. (thanks to David Lichteblau)
3519 * bug fix: it is possible to add a method to a generic function
3520 without lambda list.
3521 * bug fix: reader failed to signal END-OF-FILE inside an
3522 object representation. (reported by Nikodemus Siivola)
3523 * fixed some bugs revealed by Paul Dietz' test suite:
3524 ** LAST and [N]BUTLAST should accept a bignum.
3525 ** condition slot accessors are methods.
3526 ** (VECTOR NIL) is a subtype of STRING.
3528 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3529 * minor incompatible change: some nonsensical specialized lambda
3530 lists (used in DEFMETHOD) which were previously ignored now signal
3532 * minor incompatible change: the system is now aware of the types of
3533 variables in the COMMON-LISP package, and will signal errors for
3534 most violations of these type constraints (where previously they
3535 were silently accepted).
3536 * minor incompatible change: COMPILE-FILE now uses the freedom
3537 afforded (ANSI 3.2.2.3) to use derived function types for
3538 functions defined in the same file. This also permits the system
3539 to warn on static type mismatches and function
3540 redefinition. (Currently it does not work with high DEBUG level.)
3541 * minor incompatible change: VALUES declaration is disabled.
3542 * When issuing notes, the compiler now signals a condition of type
3543 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3544 restart for use in user handlers. It is expected that the
3545 COMPILER-NOTE condition will eventually become a condition
3546 supertype to a hierarchy of note types, which will then be
3547 handleable in a similar fashion. However, at the moment, no such
3548 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3549 but it's an implementation detail, not a classification for the
3551 * Changes in type checking closed the following bugs:
3552 ** type checking of unused values (192b, 194d, 203);
3553 ** template selection based on unsafe type assertions (192c, 236);
3554 ** type checking in branches (194bc).
3555 * A short form of VALUES type specifier has ANSI meaning (it has
3556 increased the number of situations when SBCL cannot perform type
3558 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3559 keywords or constants is permissible.
3560 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3561 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3562 classes. (thanks to Antonio Martinez)
3563 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3564 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3565 argument to a pretty-print stream. Instead, it leaves any such
3566 operations to DESCRIBE-OBJECT methods.
3567 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3569 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3570 lambda lists. (thanks to David Lichteblau)
3571 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3572 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3573 (thanks to Gerd Moellmann)
3574 * fixed bug 246: increased compilation speed of long
3575 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3577 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3579 * DEFCONSTANT now throws a condition of type
3580 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3581 constant to a non-EQL value; CONTINUE and ABORT restarts
3582 respectively change and preserve the value.
3583 * fixed bug 63: The code walker, part of the implementation of CLOS,
3584 is now better at handling symbol macros.
3585 * bug fix: There is no longer an internal implementation type named
3586 CL:LENGTH. (reported by Raymond Toy)
3587 * bug fix: In macro-like defining macros/special operators the
3588 implicit block does not enclose the lambda list.
3589 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3590 enclosed in parentheses) are not suitable as type specifiers, and
3591 their use properly signals an error now.
3592 * bug fix: An argument count mismatch for a type specifier in code
3593 being compiled no longer causes an unhandled error at compile
3594 time, but signals a compile-time warning.
3595 * fixed simple vector readable printing
3596 * bug fix: DESCRIBE takes more care over whether the class
3597 precedence list slot of a class is bound before accessing it.
3598 (reported by Markus Krummenacker)
3599 * bug fix: FORMATTER can successfully compile pretty-printer format
3600 strings which use variants of the ~* directive inside.
3601 * bug fix: SEARCH now applies its TEST predicate to the elements of
3602 the arguments in the correct order. (thanks to Wolfhard Buss)
3603 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3604 in type inference. (thanks to Robert E. Brown)
3605 * bug fix: Reading in symbols with an explicit package name of ""
3606 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3607 * fixed some bugs revealed by Paul Dietz' test suite:
3608 ** NIL is now allowed as a structure slot name.
3609 ** Arbitrary numbers, not just REALs, are allowed in certain
3610 circumstances in LOOP for-as-arithmetic clauses.
3611 ** Multiple class redefinitions before slot access no longer
3612 causes a type error.
3613 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3614 association between the name and a class.
3615 ** Generic functions with non-standard method-combination and over
3616 five methods all of which return constants no longer return NIL
3617 after the first few invocations. (thanks to Gerd Moellmann)
3618 ** CALL-NEXT-METHOD with no arguments now passes the original
3619 values of the arguments, even in the presence of assignment.
3620 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3622 ** DISASSEMBLE works with closures and funcallable instances.
3623 ** ADD-METHOD now returns the generic function, not the new method.
3624 ** FIND-METHOD signals an error if the lengths of the specializers
3625 is incompatible with the generic function, even if the ERRORP
3627 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3628 which its argument is a member.
3629 ** DEFCLASS only redefines the class named by its class-name
3630 argument if that name is the proper name of the class;
3631 otherwise, it creates a new class.
3632 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3633 of the UNBOUND-SLOT condition to the name of the slot.
3634 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3635 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3636 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3637 SLOT-MAKUNBOUND in the specified fashion.
3639 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3640 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3641 cross-compilation host. As a consequence, we can now bootstrap our
3642 way up to SBCL starting with a bare gcc toolchain and human-readable
3643 source code (first the source to CLISP, then the source to SBCL).
3644 * A contributed module containing a partial implementation of the
3645 simple-streams interface has been included. (thanks to Rudi
3647 * A contributed module implementing the RFC1321 Message Digest
3648 Algorithm, known as MD5, has been included.
3649 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3650 no longer has any effect, as the code controlled by this feature
3651 has been deleted. (As far as we know, no-one has ever built using
3652 this feature, and its semantics were confused in any case).
3653 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3654 work on conditions (as required by the ANSI specification),
3655 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3656 expected behaviour on conditions. Users should note, however,
3657 that such behaviour is not required by the ANSI specification,
3658 and so use of this behaviour may render their code unportable.
3659 * fixed some bugs revealed by Paul Dietz' test suite:
3660 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3662 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3663 ** SXHASH on condition objects no longer returns NIL.
3664 ** :ALLOCATION :CLASS slots are better treated; their values are
3665 updated on class redefinition, and initforms inherited from
3666 superclasses are applied.
3667 ** REMOVE-METHOD returns its generic function argument even when
3668 no method was removed.
3669 ** SHARED-INITIALIZE now initializes the values of the requested
3670 slots, including those with :ALLOCATION :CLASS.
3671 ** ALLOCATE-INSTANCE now works on structure classes defined via
3672 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3674 ** SLOT-EXISTS-P now works on conditions, as well as structures
3676 ** MAKE-LOAD-FORM now has the required methods on
3677 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3678 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3679 keyword, and now implements the SLOT-NAMES argument.
3680 ** methods with &OPTIONAL arguments no longer allow too many
3681 arguments to be passed in the call without error.
3682 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3683 option is consistent with the required arguments of the generic
3684 function lambda list.
3685 * bug fix: REQUIRE accepts a string designator. (Thanks to
3687 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3688 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3689 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3690 * bug fix: The compiler now checks for duplicated variables in macro
3692 * bug fix: SETQ on globals returns the correct value.
3693 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3694 not a COMPILER-ERROR (followed by some other strange error on
3695 choosing the CONTINUE restart).
3696 * bug fix: make.sh and friends are now more consistent in the way that
3697 they look for GNU "make".
3699 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3700 * experimental native threads support (on x86 Linux >=2.4 only).
3701 This is not compiled in by default: you need to add :SB-THREAD to
3702 the target features. See the "Beyond ANSI" chapter of the manual
3704 * fix for longstanding nonANSIism: The old distinction between
3705 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3706 The return value from CL:FIND-CLASS is now a CLOS class, and
3707 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3708 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3709 * An interface to the MetaObject Protocol, as described in Kiczales,
3710 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3711 MIT Press, 1991, is available from the SB-MOP package.
3712 * incompatible change: the SB-PCL package should now be considered
3713 a private implementation detail, and no longer a semi-private MOP
3715 * minor incompatible change: due to rearrangement for threads, the
3716 control stack and binding stack are now allocated at arbitrary
3717 addresses instead of being hardcoded per-port. Users affected by
3718 this probably have to be doing advanced things with shared
3719 libraries, and will know who they are.
3720 * minor incompatible change: Previously, all --eval forms used were
3721 processed with READ before any of them were processed with EVAL.
3722 Now each --eval form is processed with both READ and EVAL before
3723 the next --eval form is processed. (Thus package operations like
3724 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3725 work as the user might reasonably expect.)
3726 * minor incompatible change: *STANDARD-INPUT* is now only an
3727 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3729 * minor incompatible change: Y-OR-N-P is now character-oriented,
3730 not line oriented. Also, YES-OR-NO-P now works without errors.
3731 (thanks to Antonio Martinez)
3732 * sb-aclrepl module improvements: an integrated inspector, added
3733 repl features, and a bug fix to :trace command.
3734 * Known functions, which cannot be open coded by the backend, are
3735 considered to be able to check types of their arguments. (fixing
3736 a bug report by Nathan J. Froyd)
3737 * fixed a bug in computing method discriminating functions: It is
3738 now possible to define methods specialized on classes which have
3739 forward-referenced superclasses. (thanks to Gerd Moellmann)
3740 * fixed evaluation order in optional entries (reported by Gilbert
3742 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3743 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3744 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3745 required-by-AMOP NAME argument, as well as CLASS and
3746 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3747 * fixed bug 20: DEFMETHOD can define methods using names that are
3748 not the proper names of classes to designate class specializers.
3749 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3750 Unix file descriptors, instead of blowing up. (thanks to Antonio
3752 * Garbage collection refactoring: user-visible change is that a
3753 call to the GC function during WITHOUT-GCING will not do garbage
3754 collection until the end of the WITHOUT-GCING. If you were doing
3755 this you were probably losing anyway.
3756 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3757 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3758 TYPEP the latter but not the former.
3759 * The compiler issues a full WARNING for calls to undefined functions
3760 with names from the CL package.
3761 * MAP-INTO for a vector destination is open coded. (reported by
3762 Brian Downing on c.l.l)
3763 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3764 documentation string.
3765 * fixed some bugs revealed by Paul Dietz' test suite:
3766 ** COPY-ALIST now signals an error if its argument is a dotted
3768 ** Condition slots are now accessed more correctly in the presence
3769 of multiple initargs for a given slot.
3770 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3771 exclude restarts of the same name associated with a different
3773 ** DEFCLASS of forward-referenced classes with another
3774 forward-referenced class in the superclasses list no longer
3776 ** Condition slots are now initialized once each, not multiple
3777 times. (thanks to Gerd Moellmann)
3778 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3780 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3781 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3782 arguments contain duplicated elements.
3783 ** RESTART-CASE understands local macros.
3784 ** RESTART-CASE associates exactly its own restarts with a condition.
3785 ** ENDP in safe mode checks its argument to be of type LIST.
3786 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3787 in question is unbound.
3788 ** Optimized MAKE-INSTANCE functions no longer cause internal
3789 assertion failures in the presence of duplicate initargs.
3790 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3791 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3792 propagated even in the ctor optimized implementation of
3794 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3796 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3797 * a better implementation of SXHASH on (simple) bit vectors,
3798 measured both in execution speed and in distribution of results
3799 over the positive fixnums, has been installed. Likewise, a better
3800 implementation of EQUAL for simple bit vectors is now available.
3801 * fixed CEILING optimization for a divisor of form 2^k.
3802 * fixed bug 240 (emitting extra style warnings "using the lexical
3803 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3804 by Antonio Martinez)
3805 * fixed SXHASH, giving different results for NIL depending on type
3806 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3807 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3808 variable. (found by Rolf Wester)
3809 * SBCL does not ignore type declarations for special
3810 variables. (reported by rif on c.l.l 2003-03-05)
3811 * some bug fixes in contrib/sb-aclrepl/
3812 * fixed some bugs revealed by Paul Dietz' test suite:
3813 ** a bug in the CONS type specifier, whereby the CAR and CDR
3814 types got intertwined, has been fixed;
3815 ** the type system is now able to reason about the interaction
3816 between INTEGER and RATIO types more completely;
3817 ** APPEND, [N]REVERSE and NRECONC check that those their
3818 arguments, which must be proper lists, are really so;
3819 ** An array specialized to be unable to hold elements has been
3820 implemented, as required -- yes, really -- by ANSI;
3821 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3822 on malformed property lists;
3824 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3825 * incompatible packaging change: in line with Unix convention,
3826 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3827 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3828 * REQUIRE and PROVIDE are now optionally capable of doing something
3829 useful. See the documentation string for REQUIRE.
3830 * infrastructure for a managed SBCL contrib system: contributed
3831 modules in this release include:
3832 ** the ASDF system definition facility;
3833 ** an interface to the BSD Sockets API;
3834 ** an ACL-like convenience interface to the repl;
3835 (thanks to Kevin Rosenberg)
3836 ** an implementation of ROTATE-BYTE, with efficient implementation
3838 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3839 gives a closer approximation to the right answer than previously.
3840 (thanks to Raymond Toy)
3841 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3842 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3843 optional environment arguments, as required by ANSI.
3844 * fixed bugs in other functions taking environment objects, allowing
3845 calls with an explicit NIL environment argument to be compiled
3847 * fixed bug 228: primary return values from
3848 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3849 COMPILE or FUNCTION.
3850 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3851 :TYPE will no longer signal errors on innocuous objects.
3852 * fixed bug 231b: SETQ is better at respecting type declarations in
3853 the lexical environment.
3854 * fixed a bug in DEFCLASS: classes named by symbols with no or
3855 unprintable packages can now be defined.
3856 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3857 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3858 * fixed compiler failure related to checking types of functions.
3859 (reported by Robert E. Brown)
3860 * the compiler is now much more consistent in its error-checking
3861 treatment of bounding index arguments to sequence functions: in
3862 (SAFETY 3) code, errors will be signalled in almost all cases if
3863 invalid sequence bounding indices are passed to functions defined
3864 by ANSI to operate on sequences.
3865 * fixed a bug in the build procedure: documentation of SBCL-specific
3866 packages is now preserved and available in the final Lisp image.
3867 * lifted FDEFINITION lookup out of loops in the implementation of
3868 many list operations. (thanks to Robert E. Brown)
3869 * fixed a bug in the reader: the #n# reader macro now works for
3870 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3871 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3872 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3873 E. Brown and Tony Martinez respectively)
3874 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3875 SLOT-BOUNDP: in particular, it is now able to optimize them much
3876 better, and is now not vulnerable to having packages renamed.
3877 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3878 always called when a slot is not present in an instance. (thanks
3880 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3881 longer signal an error on unreading a character following EOF on
3882 the previous constituent stream. (thanks to Tony Martinez)
3883 * fixed some bugs revealed by Paul Dietz' test suite:
3884 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3885 not just nonnegative fixnums;
3886 ** the logical bit-array operators such as BIT-AND now accept an
3887 explicit NIL for their "opt-arg" argument (to indicate a
3888 freshly-consed result bit-array);
3889 ** ELT now signals an error on an invalid sequence index in safe
3891 ** the type system is now cleverer about negations of numeric
3892 types, and consequently understands the BIGNUM and RATIO types
3894 ** the type system is now cleverer about the interaction between
3895 INTEGER and RATIO types: while bugs still remain, many more
3896 cases are accurately computed;
3897 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3898 if it is in the last clause;
3899 ** CONSTANTLY now correctly returns a side-effect-free function in
3901 ** DECLARE is no longer treated as a special-operator; in
3902 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3903 * incremented fasl file version number due to the change in the
3904 DEFSTRUCT-SLOT-DESCRIPTION structure.
3906 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3907 * minor incompatible change: code processed by the "interpreter" or
3908 EVAL now has a compilation optimization policy of (DEBUG 2)
3909 (changed from (DEBUG 1)) to improve debuggability of interactive
3910 development, and to allow the use of the debug RETURN command in
3912 * an experimental implementation of the RETURN command for the
3913 debugger has been included. (thanks to Frederik Kuivinen)
3914 * fixed bug 62: constraints were not propagated into a loop.
3915 * fixed bug in embedded calls of SORT (reported and investigated by
3917 * fixed some bugs revealed by Paul Dietz' test suite:
3918 ** printing and reading of arrays with some dimensions having
3919 length 0 (thanks to Gerd Moellmann);
3920 ** BOA constructor with &AUX argument without a default value does
3921 not cause a type error;
3922 ** CONSTANTP now returns true for all self-evaluating objects.
3924 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3925 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3926 accessors that are related by inheritance, as specified in the
3927 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3928 Valtteri Vuorikoski)
3929 * The compiler is now able to inline functions that were defined in
3930 a complex lexical environment (e.g. inside a MACROLET).
3931 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3933 * Support for the upcoming FreeBSD-5.0 release has been included.
3934 (thanks to Dag-Erling Smorgrav)
3935 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3936 effect when it is not in a toplevel context.
3937 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3938 stand a better chance of being correct. (thanks to Gerd
3940 * fixed bug in COERCE, which now signals an error on coercing a
3941 rational to a bounded real type which excludes the expected
3943 * The compiler is now able to derive types more accurately from the
3944 COERCE and COMPILE functions.
3945 * fixed bug 223: functional binding is considered to be constant
3946 only for symbols in the CL package.
3947 * fixed bug 231: SETQ did not check the type of a variable being set
3948 (reported by Robert E. Brown)
3949 * A new optimization for MAKE-INSTANCE has been included, fixing
3950 various bugs (including relating to :ALLOCATION :CLASS slots and
3951 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3953 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3954 ** As required by ANSI, LOOP now disallows anonymous collection
3955 clauses such as COLLECT I in conjunction with aggregate boolean
3956 clauses such as THEREIS (= I 1);
3957 ** LOOP now signals an error when any variable is reused in the
3958 same loop (including the potentially useful construct analogous
3959 to WITH A = 1 WITH A = (1+ A);
3960 ** IT is only a special loop symbol within the first clause of a
3961 conditional loop clause;
3962 ** LOOP with a typed iteration variable over a hashtable now
3963 signals a type error iff it should.
3964 * fixed some other bugs revealed by Paul Dietz' test suite:
3965 ** FILE-STREAM now names the class previously known as FD-STREAM;
3966 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3967 argument) no longer signals an error;
3968 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3969 of the slot symbol, rather than using the current package
3970 ((:CONC-NAME "") continues to intern the slot's name in the
3972 * incremented fasl file version number, because of the incompatible
3973 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3974 of the new implementation of DEFINE-COMPILER-MACRO.
3976 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3977 * Support for building SBCL for MIPS platforms running in
3978 little-endian mode has now been checked in, and basic
3979 functionality on said platforms verified.
3980 * minor incompatible change: PCL now records the pathname of a file
3981 in which methods and the like are defined, rather than its
3983 * minor incompatible change: TRUENAME now considers the truename of
3984 a file naming a directory to be the pathname with :DIRECTORY
3985 component indicating that directory.
3986 * minor incompatible change: a NAMED clause in the extended form of
3987 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3988 reason for the previous behaviour is unclear.
3989 * more systematization and improvement of CLOS and MOP conformance
3990 in PCL (thanks to Gerd Moellman and Pierre Mai):
3991 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3993 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3994 primary methods with no specializers;
3995 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3997 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3998 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3999 FORWARD-REFERENCED-CLASSes; error reporting on
4000 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4002 ** SXHASH on CLOS instances now uses a slot internal to the
4003 instance to return different numbers on distinct instances,
4004 while preserving the same return value through invocations of
4006 ** DEFMETHOD signals errors when methods with longer incongruent
4007 lambda lists are added to generic functions;
4008 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4009 CLASS, as specified in AMOP;
4010 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4011 on the order returned by the primary method for classes of
4012 class STANDARD-CLASS;
4013 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4014 * fixed some bugs shown by Paul Dietz' test suite:
4015 ** DOLIST puts its body in TAGBODY;
4016 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4018 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4019 value producing form;
4020 ** if more variables are given to PROGV than values, extra
4021 variables are bound and made to have no value;
4022 ** NSUBSTITUTE on list arguments gets the right answer with
4024 ** ELT signals an error of type TYPE-ERROR when the index argument
4025 is not a valid sequence index;
4026 ** LOOP signals (at macroexpansion time) an error of type
4027 PROGRAM-ERROR when duplicate variable names are found;
4028 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4029 ** FUNCALL of special-operators now cause an error of type
4031 ** PSETQ now works as required in the presence of side-effecting
4032 symbol-macro places;
4033 ** NCONC accepts any object as its last argument;
4034 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4036 ** loop-for-as-package does not require a package to be explicitely
4038 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4040 * fixed bug 166: compiler preserves "there is a way to go"
4041 invariant when deleting code.
4042 * fixed bug 172: macro lambda lists with required arguments after
4043 &REST arguments now cause an error to be signalled. (thanks to
4045 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4046 bug. (thanks to Matthew Danish)
4047 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4049 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4050 arguments are lexically rebound. (thanks to Gerd Moellmann and
4052 * fixed bug 194: error messages are now more informative when there
4053 is no primary method applicable in a call to a generic
4054 function. (thanks to Gerd Moellmann)
4055 * fixed bug in command line argument checking (thanks to Julian
4057 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4058 (thanks to Matthew Danish)
4059 * incremented fasl file version number, because of the
4060 SXHASH-related changes in the layout of CLOS data structures
4062 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4063 * minor incompatible change: The runtime (the Unix executable named
4064 "sbcl") is now much pickier about the .core files it will load.
4065 Essentially it now requires .core files to descend from the same
4066 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4067 as the runtime does. (The intent is to prevent the crashes which
4068 can occur, and which can even be reported as mysterious failures,
4069 when people patch the sources or change the build parameters
4070 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4071 sbcl and .core files.)
4072 * fixed bug: VALUES-LIST is no longer optimized away.
4073 * fixed bug 142: The FFI conversion of C string values to Lisp
4074 string values no longer conses excessively. (thanks to Nathan
4075 Froyd porting Raymond Toy's fix to CMU CL)
4076 * began to systematize and improve MOP conformance in PCL (thanks to
4077 Nathan Froyd, Gerd Moellman and Pierre Mai):
4078 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4080 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4081 ** FINALIZE-INHERITANCE is now called on class finalization;
4082 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4083 argument precedence order.
4084 * fixed bug 202: The compiler no longer fails on functions whose
4085 derived types contradict their declared type.
4086 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4087 so it can be non-toplevel.
4088 * The fasl file version number has changed (because of the new
4089 implementation of DEFMACRO).
4090 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4091 safe code, that any length requirement by their type-specifier
4092 argument is valid. The exceptions to this are described in bug
4094 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4095 functions now check the types of their inputs as required by ANSI.
4096 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4097 introduced symbol is DECLAREd to be SPECIAL.
4098 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4099 * fixed bug: :COUNT argument to sequence functions may be negative
4100 * fixed bug: body of DO-SYMBOLS may contain declarations
4101 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4102 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4103 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4104 symbol macro only once
4105 * fixed printing of call frame when argument list is unavailable
4106 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4107 * compiler no longer signals WARNING on unknown keyword
4110 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4111 * A beta-quality port to the mips architecture running Linux,
4112 based on the old CMUCL backend, has been made. It has been tested
4113 on a big-endian kernel, and works sufficiently well to be able to
4114 rebuild itself; it has not been tested in little-endian mode.
4115 * fixed an inconsistency between gencgc.c and purify.c which made
4116 dumping/loading .core files unreliable
4117 * fixed bug 120a: The compiler now deals correctly with IFs where
4118 the consequent is the same as the alternative, instead of
4119 misderiving the return type. (thanks to Alexey Dejneka)
4120 * fixed bug 113: Logical pathnames are now dumpable (the logical
4121 host is resolved at load-time, throwing an error if it is not
4123 * fixed bug 174: FORMAT's error message is slightly clearer when a
4124 non-printing character is used in a format directive.
4125 * fixed several bugs in compiler checking of type declarations, i.e.
4126 violations of the Python "declarations are assertions" principle
4127 (thanks to Alexey Dejneka)
4128 * fixed several bugs in PCL's error checking (thanks to Gerd
4130 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4132 * fixed bug in compilation of functions as first class values
4133 (thanks to Antonio Martinez-Shotton)
4134 * The compiler's handling TYPE-ERRORs which it can prove will
4135 inevitably happen at runtime has been cleaned up and corrected
4136 in several ways. (thanks to Alexey Dejneka)
4137 * improved argument type checking for various basic arithmetic
4138 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4139 lavished on them in the past that they can be compiled in many
4140 ways in different special cases
4141 * fixed bug 181: compiler checks validity of user supplied type
4143 * cleaned up code flushing in optimization: Function calls which
4144 should signal errors for safety purposes (e.g. which ANSI says
4145 should signal errors when their arguments are of incorrect type)
4146 are no longer optimized away.
4147 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4148 * incremented fasl file version number, because changes in the
4149 implementation of sequence functions like COERCE caused
4150 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4151 in old inline expansions) to become undefined. (Actually these
4152 changes were later undone, so we might very well be binary
4153 compatible with 0.7.7 after all, but leaving the version number
4154 incremented seemed like the simplest and most conservative
4157 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4158 * An alpha-quality port to the parisc architecture running Linux,
4159 based on the old CMUCL backend, has been made. This, even more so
4160 than the other backends, should be considered still a work in
4161 progress; known problems include that the Linux kernel in 64-bit
4162 mode does not propagate the correct sigcontext structure to
4163 userspace, and consequently SBCL on a parisc64 kernel will not
4165 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4166 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4167 suppressed.) Also now that the compiler is looking at declarations
4168 in the environment, it checks optimization declarations as well,
4169 and suppresses inlining when (> DEBUG SPEED).
4170 * More fixes have been made to treatment of floating point exception
4171 treatment and other Unix signals. In particular, floating point
4172 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4173 * The detection and handling of control stack exhaustion (infinite
4174 or very deeply nested recursion) has changed. Stack exhaustion
4175 detection is now done by write-protecting pages at the OS level
4176 and applies at all optimization settings; when found, a
4177 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4178 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4179 be caught using IGNORE-ERRORS.
4180 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4181 correctly when transforming recursive LABELS functions to LETs.
4182 (thanks to Alexey Dejneka)
4183 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4184 that are names of constants or global variables.
4185 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4186 alien routines with docstrings.
4187 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4188 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4190 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4191 (thanks to Eric Marsden)
4192 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4193 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4194 * Bug fix: The SPARC backend can now compile functions involving
4195 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4196 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4197 to a functions expecting a PATHNAME-DESIGNATOR.
4198 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4199 lambda lists. (thanks to Alexey Dejneka)
4200 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4201 functions so that EXPORTing the name of the class doesn't cause
4202 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4203 to Antonio Martinez for reporting this)
4204 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4205 constant-folded without failing an assertion. (thanks to Einar
4206 Floystad Dorum for reporting this)
4207 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4208 types are now dealt with more correctly by the compiler.
4209 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4210 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4211 behaviour analogous to RENAME-FILE. This puts its behaviour more
4212 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4214 * The fasl file version number has changed again. (because of the
4215 bug fix involving the names of PCL MAKE-INSTANCE functions)
4217 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4218 * bug fix: Floating point exceptions are treated much more
4219 consistently on the x86/Linux and PPC/Linux platforms.
4220 * Array initialization with :INITIAL-ELEMENT is now much faster for
4221 cases when the compiler cannot open code the array creation, but
4222 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4223 array accesses have also seen a speed increase.
4224 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4225 specified. (This was at the root of some bad interactions between
4226 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4228 * bug fix: Internal error arguments for undefined functions are now
4229 computed correctly on the PPC/Linux platform.
4230 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4231 Raymond Toy's patch for CMU CL)
4232 * Support for the Solaris 9 operating environment has been included
4233 (thanks to Daniel Merritt)
4234 * A very ugly but hopefully complete draft of the missing FFI chapter
4235 of the manual has been created by reformatting the corresponding
4236 CMU CL manual chapter into (currently very ugly and incoherent)
4237 DocBook and bringing it up to date for SBCL behavior. Thus, the
4238 manual is now essentially complete, at least by my extreme
4239 once-and-only-once standards, whereby it's acceptable to refer to
4240 the doc strings of SB-EXT functions as the primary documentation.
4241 * The fasl file version number has changed again, due to cleanup of
4242 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4243 is no longer a static symbol.)
4245 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4246 * SBCL now builds with OpenMCL (version 0.12) as the
4247 cross-compilation host; also, more progress has been made toward
4248 bootstrapping under CLISP.
4249 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4251 * bug 158 fixed: The compiler can now deal with integer loop
4252 increments different from 1; fixing this turned out also to fix
4254 * bug 169 fixed: no more bogus warnings about using lexical bindings
4255 despite the presence of perfectly good SPECIAL declarations (thanks
4256 to David Lichteblau)
4257 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4258 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4259 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4261 * bug 180 fixed: Method combination specifications no longer ignore
4262 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4263 * bug fix: Structure type predicate functions now check their argument
4264 count as they should.
4265 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4266 correctly. (thanks to Pierre Mai)
4267 * minor incompatible change: The --noprogrammer option is deprecated
4268 in favor of the new --disable-debugger option, which is very similar.
4269 (The major difference is that it takes effect at a slightly different
4270 time at startup, causing handling of errors in --sysinit and
4271 --userinit files will be affected differently.) The
4272 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4273 been added to allow this functionality to be controlled from ordinary
4274 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4275 maintainers, who might want to run non-interactive scripts to
4276 build SBCL cores which will later be used interactively.)
4277 * minor incompatible change: The LOAD function no longer, when given
4278 a wild pathname to load, loads all files matching that pathname.
4279 Instead, an error of type FILE-ERROR is signalled.
4281 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4282 * bug 147 fixed: The compiler preserves its block link/count
4283 invariants more correctly now so that it doesn't crash. (thanks
4285 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4287 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4288 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4289 no-value-for-this-character as NIL (as specified by ANSI).
4290 * HOST-NAMESTRING on physical pathnames now returns a string that is
4291 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4292 (thanks to Christophe Rhodes)
4293 * The Alpha port handles icache flushing more correctly. (thanks to
4295 * More progress has been made toward bootstrapping under CLISP. (thanks
4296 to Christophe Rhodes)
4297 * The fasl file format has changed again, because dynamic loading
4298 on OpenBSD (which has non-ELF object files) motivated some cleanups
4299 in the way that foreign symbols are transformed and passed around.
4300 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4301 is no longer treated as whitespace by the reader, but instead as
4302 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4303 |A
\7fB|, instead of A as it used to.
4305 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4306 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4307 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4308 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4309 this as of 0.7.1.45, but was left out of the previous news section
4310 (thanks to Dan Barlow)
4311 * SBCL now runs on the Solaris operating system on SPARC architectures
4312 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4313 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4314 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4315 * SPARC backend cleanups, allowing builds of cores optimized for V8
4316 and V9 SPARCS, and also emission of code targeted to a particular
4317 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4319 * SBCL is closer to bootstrapping under CLISP, thanks to various
4320 fixes by Christophe Rhodes.
4321 * The fasl file format has changed again, to allow the compiler's
4322 INFO database to support symbol macros.
4323 * The user manual (in doc/) is formatted into HTML more nicely.
4324 (thanks to coreythomas)
4325 * The system is smarter about SUBTYPEP relationships, especially
4326 those involving NOT types (including types such as ATOM which are
4327 represented internally using NOT types). Thus SUBTYPEP is less
4328 likely to return (VALUES NIL NIL) in general, and in particular
4329 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4331 * The fasl file format has changed again, because the internal
4332 representation of types now includes a new slot to support the new
4333 SUBTYPEP-of-NOT-types logic.
4334 * (not a change in the main branch of SBCL, but a related prototype
4335 which can hopefully be merged into the main branch of SBCL in the
4336 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4337 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4338 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4339 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4340 dispatch macro character combinations. (thanks to Alexey Dejneka)
4341 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4342 that superficially look like logical namestrings correctly.
4343 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4345 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4346 default supplied-p) for &optional and &key arguments. (thanks to
4349 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4350 * incompatible change: The compiler is now less aggressive about
4351 tail call optimization, doing it only when (> SPACE DEBUG) or
4352 (> SPEED DEBUG). (This is an incompatible change because there are
4353 programs which relied on the old CMU-CL-style behavior to optimize
4354 away their unbounded recursion which will now die of stack overflow.)
4355 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4356 for non-GENCGC systems has been increased to 20M (since that
4357 seems much closer to the likely performance optimum for modern
4358 systems than the old 4M value was)
4359 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4360 and *DEBUG-PRINT-LEVEL*
4361 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4362 of CMU CL's support for SPARC, and various endianness and other
4363 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4364 * new syntactic sugar for the Unix command line: --load foo.bar is now
4365 an alternate notation for --eval '(load "foo.bar")'.
4367 ** The system now detects stack overflow and handles it gracefully,
4368 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4369 optimization settings. (This is a good thing in general, and
4370 its introduction in this version should be particularly timely
4371 for anyone whose code fails because of suppression of tail
4373 ** The system now hunts for the C variable "environ" in a more
4374 devious way, to avoid segfaults when the C library version differs
4375 between compile time and run time. (thanks to Christophe Rhodes)
4376 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4377 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4378 ** The compiler no longer issues bogus style warnings for undefined
4379 classes in the same source file as the DEFCLASSes which defined
4380 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4382 ** fixes in CONDITION class precedence list for undefined function
4383 errors (thanks to Alexei Dejneka)
4384 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4385 correctly. (thanks to Dan Barlow)
4386 ** portability fixes aiming at bootstrapping under CLISP (thanks
4387 to Dave McDonald and Christophe Rhodes)
4388 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4389 ** fixes in type translation and and type inference (thanks to
4391 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4392 ** various fixes in the new ports (thanks to Dan Barlow)
4393 * several changes related to debugging:
4394 ** suppression of tail recursion, as noted above
4395 ** stack overflow detection, as noted above
4396 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4397 is now the default. (For some time encapsulation has been more
4398 reliable than the breakpoint-based :ENCAPSULATE NIL
4399 implementation, at least on X86 systems; and I just noticed that
4400 encapsulation also seems closer to the spirit of the ANSI
4403 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4405 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4406 up properly again. (There was a packaging bug in 0.7.0 which
4407 left their definitions in SB-SYS::LOAD-FOREIGN and
4408 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4409 vital for most things which interface to C-level interfaces,
4410 like extensions working with sockets or databases or
4411 Perl-compatible regexes or whatever, and the need to fix
4412 this bug is the main reason that 0.7.1 was released so
4414 ** DEFGENERIC is now choosier about the methods it redefines, so that
4415 reLOADing a previously-LOADed file containing DEFGENERICs does
4416 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4417 cycle now works as it should. (thanks to Alexey Dejneka)
4418 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4419 fixed by Christophe Rhodes. (He actually submitted this patch
4420 months ago, and I delayed until after 0.7.0.)
4421 ** Bug 111 (internal compiler confusion about runtime checks on
4422 FUNCTION types) was fixed by Alexey Dejneka.
4423 * Some internal cleanups (getting rid of variables which aren't
4424 needed now that the byte interpreter is gone) caused the fasl
4425 file format number to change again.
4427 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4428 * major incompatible change: The default fasl file extension, i.e. the
4429 default extension for files produced by COMPILE-FILE, has changed
4430 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4432 ** There are many changes in the implementation of the compiler.
4433 SBCL is now essentially a compiler-only implementation of ANSI
4434 Common Lisp. EVAL still "interprets" a few special cases, but
4435 almost all the interesting cases are handled by creating
4436 a LAMBDA expression, calling COMPILE on it, then calling
4437 FUNCALL on the result.
4438 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4439 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4440 Since the code is newer, there might still be some new bugs
4441 (though not as many as before Martin Atzmueller's fixes:-). But
4442 the new code is substantially simpler and clearer, and hopefully
4443 any remaining bugs will be simpler, less fundamental, and more
4444 fixable then the bugs in the old code.
4445 ** The revised compiler is still a little unsteady on its feet.
4447 *** The debugging information it produces (particularly the names
4448 of FUNCTION objects) is sometimes much less useful than what
4449 the old compiler produced.
4450 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4451 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4452 within a MACROLET) has been temporarily weakened.
4453 ** There are new compiler optimizations for various functions:
4454 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4455 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4456 *** the math functions TRUNCATE, FLOOR, and CEILING
4457 *** the function-of-all-trades COERCE
4458 Mostly these should be transparent, but there's one
4459 potentially-annoying problem (bug 117): when the compiler
4460 inline-expands a function and does type analysis on the result,
4461 it can create control paths which have type mismatches, and
4462 when it can't prove that those control paths aren't taken,
4463 it will issue WARNINGs about the type mismatches. This is
4464 a particular problem in practice for the new sequence functions.
4465 It's not clear how this should be fixed, and for now, a
4466 workaround is given in the entry for 117 in the BUGS file.
4467 ** (Because of the interaction between the two previous items --
4468 occasional inlining problems and new inline expansions -- some
4469 of the new sequence function optimizations won't really kick in
4470 completely until debugging information, and then inlining, are
4471 straightened out in some future version.)
4472 * minor incompatible changes:
4473 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4474 DIRECTORY no longer implicitly promotes NIL slots of its
4475 pathname argument to :WILD. In particular, when you ask for the
4476 contents of a directory (which you used to be able to do without
4477 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4478 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4479 ** changes in behavior that ANSI explicitly defines to be
4480 implementation dependent:
4481 *** The new compiler-only implementation still conforms with ANSI,
4482 but acts a little different than before. Besides the obvious
4483 changes in performance tradeoffs (that the cost per form passed
4484 to EVAL has gone up, and the cost per form executed by EVAL
4485 has gone down), the behavior of the system changes a little
4486 because there are no longer any interpreted function objects.
4487 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4488 e.g. doing COMPILE on the output of interactive DEFUN is
4490 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4492 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4493 has changed from (:CL) to NIL.
4494 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4495 e.g. #\Newline and #\Tab, don't have names specified in the
4496 ANSI Common Lisp standard, is now based on their ASCII symbolic
4497 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4498 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4499 are no longer used for output.
4500 ** changes in internal implementation constants:
4501 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4502 4 million. (If your application spends a lot of time GCing and
4503 you have a lot of RAM, you might want to experiment with
4504 increasing it even more.)
4505 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4506 However, almost all old code should still continue to work without
4507 immediate update, as SB-C-CALL is now a (deprecated) nickname
4509 ** Old operator names in the style DEF-FOO are now deprecated in
4510 favor of new corresponding names DEFINE-FOO, for consistency with
4511 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4512 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4513 internal symbols, but a few supported extensions like
4514 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4515 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4516 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4517 etc. as you get deeper into recursive calls to the debugger
4518 command loop, instead of the old "5]", "5]]", "5]]]"
4519 sequence. (I was motivated to do this when squabbles between
4520 ILISP and SBCL left me very deeply nested in the debugger. In the
4521 short term, this change will probably provoke more ILISP/SBCL
4522 squabbles, but hopefully it will be an improvement in the long run.)
4523 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4524 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4525 function, since declaiming return types involving aliens is
4526 (1) annoyingly messy to do by hand and (2) vital to efficient
4527 compilation of code which calls such functions.
4528 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4529 longer reexported by the SB-EXT package. They're solely useful
4530 for alien code, so it seems more logical that you should get
4531 them from the SB-ALIEN package, not in SB-EXT.
4532 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4533 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4534 features. Instead, the code that they used to control is always
4535 built into the system.
4536 * many other bug fixes
4537 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4538 advantage of the new EVAL-WHEN stuff and to clean them up in
4539 general, and they are now more ANSI-compliant in a number of
4540 ways. Martin Atzmueller is responsible for a lot of this.
4541 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4543 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4544 *** correct ERROR type for various file operations
4545 *** some fixes for Lisp streams
4546 *** DEFMETHOD syntax checking
4547 *** changing old weird representation of debug information as
4548 strings (which, among their other deficiencies, don't transform
4549 correctly when you rename packages, and don't change their
4550 print representation when you change things like *PACKAGE*
4551 and *PRINT-LENGTH*) to symbols and lists of symbols
4552 He also made several improvements and fixed several bugs in DESCRIBE.
4553 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4555 *** misbehavior of WRITE-STRING/WRITE-LINE
4556 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4557 and several other LOOP problems as well
4558 *** DIRECTORY when similar filenames are present
4559 *** DEFGENERIC with :METHOD options
4560 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4561 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4562 *** argument ordering in FIND with :TEST option
4563 *** mishandled package designator argument in APROPOS-LIST
4564 *** various problems in the backquote readmacro
4565 *** a bug in APROPOS
4566 *** probably some others that I'm not describing very well here,
4567 since the CVS log documents them by reference to sbcl-devel
4568 messages, and the SourceForge archives aren't working well.:-(
4569 ** Dan Barlow improved the Alpha port (and is making progress on the
4570 PPC port, for those of you who think different).
4571 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4572 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4573 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4574 continues to work on the SPARC port (for those of you in a position
4575 to look down upon our little PC-compatible boxes from a great height).
4576 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4577 and uses that copy, rather than the current dynamic value, when
4578 it's trying to decide whether to truncate output. Thus e.g.
4579 (let ((*print-lines* 50))
4580 (pprint-logical-block (stream nil)
4582 (let ((*print-lines* 8))
4583 (print (aref possiblybigthings i) stream)))))
4584 should now truncate the logical block only at 50 lines, instead of
4585 often truncating it at 8 lines, as it did before.
4586 * The doc/cmucl/ directory, containing old CMU CL documentation
4587 from the time of the fork, is no longer part of the base system.
4588 SourceForge has shut down its anonymous FTP service, and with it
4589 my original plan for distributing the old CMU CL documentation
4590 there. For now, if you need these files you can download an old
4591 SBCL source release and extract them from it.
4592 * The fasl file version number changed again, for dozens of reasons,
4593 some of which are apparent above.
4595 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4596 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4597 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4598 patch, so that DISASSEMBLE output is much nicer.
4599 * The code in the SB-PROFILE package now seems reasonably stable.
4600 I still haven't decided what the final interface should look like
4601 (I'd like PROFILE to interact cleanly with TRACE, since both
4602 facilities use function encapsulation) but if you have a need
4603 for profiling now, you can probably use it successfully with
4604 the current CMU-CL-style interface.
4605 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4606 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4607 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4608 link now returns the dangling link itself, and for similar
4609 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4610 link itself. (In these cases the old code signalled an error and
4611 looped endlessly, respectively.) Thus, DIRECTORY now works even
4612 in the presence of dangling and cyclic symbolic links.
4613 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4614 is now a supported extension again, since the consensus on
4615 sbcl-devel was that it can be useful for ordinary development
4616 work, not just for debugging SBCL itself.
4617 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4618 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4619 that currently-defined functions might be redefined later with
4620 different return types.
4621 * Hash tables can be printed readably, as inspired by CMU CL code
4622 of Eric Marsden and SBCL code of Martin Atzmueller.
4623 * better error handling in CLOS method combination, thanks to
4624 Martin Atzmueller porting Pierre Mai's CMU CL patches
4625 * more overflow fixes for >16Mbyte I/O buffers
4626 * A bug in READ has been fixed, so that now a single Ctrl-D
4627 character suffices to cause end-of-file on character streams.
4628 In particular, now you only need one Ctrl-D at the command
4629 line (not two) to exit SBCL.
4630 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4632 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4633 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4634 does the right thing.
4635 * The implementation of some type tests, especially for CONDITION
4636 types, is now tidier and maybe faster, due to CMU CL code
4637 originally by Douglas Crosher, ported by Martin Atzmueller.
4638 * Some math functions have been fixed, and there are new
4639 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4640 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4641 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4642 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4643 likely to be built into sbcl-0.7.0.)
4644 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4645 CL, ported to SBCL by Martin Atzmueller)
4646 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4647 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4648 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4649 * There's a new slam.sh hack to shorten the edit/compile/debug
4650 cycle for low-level changes to SBCL itself, and a new
4651 :SB-AFTER-XC-CORE target feature to control the generation of
4652 the after-xc.core file needed by slam.sh.
4653 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4654 COMPILE-FILE is no longer supported, so that now every function
4655 gets an entry point, so that block compilation looks a little
4656 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4657 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4658 returns the number of bytes consed since the system started,
4659 rather than the number consed since the first time the function
4660 was called. (The new definition parallels ANSI functions like
4661 CL:GET-INTERNAL-RUN-TIME.)
4662 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4663 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4664 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4665 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4666 * Fasl file version numbers are now independent of the target CPU,
4667 since historically most system changes which required version
4668 number changes have affected all CPUs equally. Similarly,
4669 the byte fasl file version is now equal to the ordinary
4672 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4673 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4674 is no longer recognized. I apologize for this, because it was
4675 listed in SB-EXT as a supported extension, but I found that
4676 its existing behavior was poorly specified, as well as incorrectly
4677 specified, and it looked like too much of a mess to straighten it
4678 out. I have enough on my hands trying to get ANSI stuff to work..
4679 * many patches ported from CMU CL by Martin Atzmueller, with
4680 half a dozen bug fixes in pretty-printing and the debugger, and
4681 half a dozen others elsewhere
4682 * fixed bug 13: Floating point infinities are now supported again.
4683 They might still be a little bit flaky, but thanks to bug reports
4684 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4685 as flaky as they were.
4686 * The --noprogrammer command line option is now supported. (Its
4687 behavior is slightly different in detail from what the old man
4688 page claimed it would do, but it's still appropriate under the
4689 same circumstances that the man page talks about.)
4690 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4691 are now supported, and enabled by default. Thus, the compiler can
4692 handle many floating point and complex operations much less
4693 inefficiently. (Thus e.g. you can implement a complex FFT
4695 * The compiler now detects type mismatches between DECLAIM FTYPE
4696 and DEFUN better, and implements CHECK-TYPE more correctly, and
4697 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4698 thanks to patches from Martin Atzmueller.
4699 * various fixes to make the cross-compiler more portable to
4700 ANSI-conforming-but-different cross-compilation hosts (notably
4701 Lispworks for Windows, following bug reports from Arthur Lemmens)
4702 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4703 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4704 fixed thanks to Pierre Mai's CMU CL patches.
4705 * fixes to keep the system from overflowing internal counters when
4706 it tries to use i/o buffers larger than 16M bytes
4707 * fixed bug 45a: Various internal functions required to support
4708 complex special functions have been merged from CMU CL sources.
4709 (When I was first setting up SBCL, I misunderstood a compile-time
4710 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4711 * improved support for type intersection and union, fixing bug 12
4712 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4713 more obscure bugs as well
4714 * some steps toward byte-compiling non-performance-critical
4715 parts of the system, courtesy of patches from Martin Atzmueller
4716 * Christophe Rhodes has made some debian packages of sbcl at
4717 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4718 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4719 stable, but are nonetheless usable. When he's ready, I'd be happy
4720 to add them to the SourceForge "File Releases" section. (And if
4721 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4722 * new fasl file format version number (because of changes in
4723 internal representation of (OR ..) types to accommodate the new
4724 support for (AND ..) types, among other things)
4726 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4727 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4729 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4731 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4732 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4733 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4734 * DESCRIBE now works on structure objects again.
4735 * Most function call argument type mismatches are now handled as
4736 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4737 know whether the function will be redefined before the call is
4738 executed. (The compiler could flag local calls with full WARNINGs,
4739 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4740 it doesn't keep track of enough information to know whether calls
4741 are local in this sense.)
4742 * Compiler output is now more verbose, with messages truncated
4743 later than before. (There should be some supported way for users
4744 to override the default verbosity, but I haven't decided how to
4745 provide it yet, so this behavior is still controlled by the internal
4746 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4747 src/compiler/ir1util.lisp.)
4748 * Fasl file format version numbers have increased again, because
4749 support for the Gray streams extension changes the layout of the
4750 system's STREAM objects.
4751 * The Gray subclassable streams extension now works, thanks to a
4752 patch from Martin Atzmueller.
4753 * The full LOAD-FOREIGN extension (not just the primitive
4754 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4755 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4756 but like most other programs, it defaults to copying the Unix
4757 environment from the original process instead of starting the
4758 new process in an empty environment.
4759 * Extensions which manipulate the Unix environment now support
4760 an :ENVIRONMENT keyword option which doesn't smash case or
4761 do other bad things. The CMU-CL-style :ENV option is retained
4762 for porting convenience.
4763 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4764 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4766 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4768 * A patch from Martin Atzmueller seems to have solved the SIGINT
4769 problem, and as far as we know, signal-handling now works cleanly.
4770 (If you find any new bugs, please report them!)
4771 * The system no longer defaults Lisp source file names to types
4772 ".l", ".cl", or ".lsp", but only to ".lisp".
4773 * The compiler no longer uses special default file extensions for
4774 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4775 seems to expect a single default extension for all compiled code,
4776 and there's no compelling reason to try to stretch the standard
4777 to allow two different extensions.) Instead, byte-compiled files
4778 default to the same extension as native-compiled files.
4779 * Fasl file format version numbers have increased again, because
4780 a rearrangement of internal implementation packages made some
4781 dumped symbols in old fasl files unreadable in new cores.
4782 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4783 many fewer weird special cases.
4784 * Bug #17 (differing COMPILE-FILE behavior between logical and
4785 physical pathnames) has been fixed, and some related misbehavior too,
4786 thanks to a patch from Martin Atzmueller.
4787 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4788 by Tim Moore, ported to SBCL by Martin Atzmueller.
4789 * Martin Atzmueller fixed several filesystem-related problems,
4790 including bug #36, in part by porting CMU CL patches, which were
4791 written in part by Paul Werkowski.
4792 * More compiler warnings in src/runtime/ are gone, thanks to
4793 more patches from Martin Atzmueller.
4794 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4797 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4799 * DESCRIBE now works on CONDITION objects.
4800 * The debugger now handles errors which arise when trying to print
4801 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4803 * The build system now uses an additional file, customize-target-features.lisp,
4804 to allow local modifications to the target *FEATURES* list. (The point of
4805 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4806 debugging features enabled, without having to worry about propagating it
4807 into everyone's system when I do a "cvs update".) When no
4808 customize-target-features.lisp file exists, the target *FEATURES* list
4809 should be constructed the same way as before.
4810 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4811 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4812 warn about behavior which is undefined under the ANSI spec. Note: This
4813 is specified by ANSI, but it's not very popular with programmers.
4814 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4815 macro in the SBCL sources for an example of a workaround which you
4816 might use to make portable ANSI-standard code which does what you want.
4817 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4818 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4819 when it's used as a non-toplevel form. (This is required in order
4820 to implement the DEFCONSTANT-EQX macro.)
4821 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4822 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4823 funny things, due to bugs in the implementation of EVAL-WHEN
4824 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4825 non-toplevel DEFCONSTANTs are uncommon.)
4826 * The core file version number and fasl file version number have been
4827 incremented, because the old noncompliant DEFCONSTANT behavior involved
4828 calling functions which no longer exist, and because I also took the
4829 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4830 * fixed bug 1 (error handling before read-eval-print loop starts), and
4831 redid debugger restarts and related debugger commands somewhat while
4833 ** The QUIT debugger command is gone, since it did something
4834 rather different than the SB-EXT:QUIT command, and since it never
4835 worked properly outside the main toplevel read/eval/print loop.
4836 Invoking the new TOPLEVEL restart provides the same functionality.
4837 ** The GO debugger command is also gone, since you can just invoke
4838 the CONTINUE restart directly instead.
4839 ** The TOP debugger command is also gone, since it's redundant with the
4840 FRAME 0 command, and since it interfered with abbreviations for the
4842 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4844 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4845 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4846 some porting work by Martin Atzmueller)
4847 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4848 with a boatload of patches which he ported to SBCL. Now that those
4850 ** The system tries to make sure that its low-priority messages
4851 are prefixed by semicolons, to help people who like to use
4852 syntax highlighting in their ILISP buffer. (This patch
4853 was originally due to Raymond Toy.)
4854 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4855 patches originally written by Raymond Toy.
4856 ** The compiler understands coercion between single-value and
4857 multiple-VALUES type expressions better, getting rid of some very
4858 weird behavior, thanks to patches originally by Robert MacLachlan
4859 and Douglas Crosher.
4860 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4861 lambda lists, thanks to a patch originally by Pierre Mai.
4862 ** The system no longer bogusly warns about "abbreviated type
4864 ** The compiler gets less confused by inlining and RETURN-FROM,
4865 thanks to some patches originally by Tim Moore.
4866 ** The system no longer hangs when dumping circular lists to fasl
4867 files, thanks to a patch originally from Douglas Crosher.
4868 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4869 undefined function error.
4870 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4871 in structure slot initforms) for now, documented workaround instead:-|
4872 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4873 * fixed bug 5: added stubs for various Gray stream functions called
4874 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4875 installed, at least appropriate type errors are generated
4876 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4877 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4878 consistently in DEFMETHOD forms.
4879 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4880 it doesn't seem to affect SBCL after all
4881 * The C runtime system now builds with better optimization and many
4882 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4884 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4886 * The system is now under CVS at SourceForge (instead of the
4887 CVS repository on my home machine).
4888 * The new signal handling code has been tweaked to treat register
4889 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4890 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4891 downstream, e.g. in debug-int.lisp, has implicit dependencies
4892 on the unsignedness of integer representation of machine words,
4893 and that caused the system to bomb out with infinite regress
4894 when trying to recover from type errors involving signed values,
4895 e.g. (BUTLAST '(1 2 3) -1).)
4896 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4897 (This was one of the bugs Peter Van Eynde reported back in July.)
4898 * The system now uses code inspired by Colin Walters' O(N)
4899 implementation of MAP (from the cmucl-imp@cons.org mailing
4900 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4901 inline the MAP operation, and there is more than one
4902 sequence argument to the MAP call (so that it can't just
4903 do ETYPECASE once and for all based on the type of the
4904 single sequence argument). (The old non-inline implementation
4905 of the general M-argument sequence-of-length-N case required
4906 O(M*N*N) time when any of the sequence arguments were LISTs.)
4907 * The QUIT :UNIX-CODE keyword argument has been renamed to
4908 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4909 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4911 * Raymond Wiker's patches to port dynamic loading from Linux to
4912 FreeBSD have been added.
4913 * The BUGS file is now more nearly up to date, thanks in large part
4914 to Martin Atzmueller's review of it.
4915 * The debugger now flushes standard output streams before it begins
4916 its output ("debugger invoked" and so forth).
4917 * The core version number and fasl file version number have both
4918 been incremented, because of incompatible changes in the layout
4920 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4921 used to not be called for a saved Lisp image.)
4922 * Martin Atzmueller's version of a patch to fix a compiler crash,
4923 as posted on sbcl-devel 13 September 2000, has been installed.
4924 * Instead of installing Martin Atzmueller's patch for the
4925 compiler transform for SUBSEQ, I deleted the compiler transform,
4926 and transforms for some similar consing operations.
4927 * A bug in signal handling which kept TRACE from working on OpenBSD
4929 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4930 away by constant folding
4931 * The system now defines its address space constants in one place
4932 (in the Lisp sources), and propagates them automatically elsewhere
4933 (through GENESIS and the sbcl.h file). Therefore, patching the
4934 address map is less unnecessarily tedious and error-prone. The
4935 Lisp names of address space constants have also been systematized.
4936 * CVS tags like dollar-Header-dollar have been removed from
4937 the sources, because they have never saved me trouble and
4938 they've been source of trouble working with patches and other
4939 diff-related operations.
4940 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4941 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4943 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4945 * The system has been ported to OpenBSD.
4946 * The system now compiles with a simple "sh make.sh" on the systems
4947 that it's supported on. I.e., now you no longer need to tweak
4948 text in the target-features.lisp-expr and symlinks in src/runtime/
4949 by hand, the make.sh takes care of it for you.
4950 * The system is no longer so grossly inefficient when compiling code
4951 involving vectors implemented as general (not simple) vectors (VECTOR T),
4952 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4953 which dares to use the various sequence functions on non-simple
4954 vectors, takes less of a performance hit.
4955 * There is now a primitive type predicate VECTOR-T-P
4956 to test for the (VECTOR T) type, so that e.g.
4957 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4958 can now be compiled with some semblance of efficiency. (The old code
4959 turned the type declaration into a full call to %TYPEP at runtime!)
4960 * AREF on (VECTOR T) is still not fast, since it's still compiled
4961 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4962 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4963 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4964 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4965 without making full calls to SUBTYPEP at runtime.
4966 (Some analogous efficiency issues for non-simple vectors specialized to
4967 element types other than T, or for non-simple multidimensional arrays,
4968 have not been addressed. They could almost certainly be handled the
4969 same way if anyone is motivated to do so.)
4970 * The changes in array handling break binary compatibility, so
4971 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4972 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4973 instead of (VALUES T T).
4974 * By following the instructions that Dan Barlow posted to sbcl-devel
4975 on 2 July 2000, I was able to enable primitive dynamic object
4976 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4977 functionality is not implemented (since it calls ld to resolve
4978 library references automatically, requiring RUN-PROGRAM for its
4979 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4980 try to resolve library references) is now supported.
4981 * The system now flushes the standard output streams when it terminates,
4982 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4983 them at several other probably-convenient times, e.g. in each pass of
4984 the toplevel read-eval-print loop, and after evaluating a form given
4985 as an "--eval" command-line option. (These changes were motivated by a
4986 discussion of stream flushing issues on cmucl-imp in August 2000.)
4987 * The source transform for TYPEP of array types no longer assumes
4988 that an array whose element type is a not-yet-defined type
4989 is implemented as an array of T, but instead punts, so that the
4990 type will be interpreted at runtime.
4991 * There is now some support for cross-compiling in make.sh: each of
4992 the phases of make.sh has its own script. (This should be transparent
4993 to people doing ordinary, non-cross-compile builds.)
4994 * Since my laptop doesn't have hundreds of megabytes of memory like
4995 my desktop machine, I became more motivated to do some items on
4996 my to-do list in order to reduce the size of the system a little:
4997 ** Arrange for various needed-only-at-cold-init things to be
4998 uninterned after cold init. To support this, those things have
4999 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5000 symbols with such names are now uninterned after cold init).
5001 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5002 fasl files for cold load.
5003 ** Remove the old compiler structure pooling code (which used to
5004 be conditional on the target feature :SB-ALLOC) completely.
5005 ** Redo the representation of some data in cold init to be more compact.
5006 (I also looked into supporting byte compiled code at bootstrap time,
5007 which would probably reduce the size of the system a lot, but that
5008 looked too complicated, so I punted for now.)
5009 * The maximum signal nesting depth in the src/runtime/ support code has
5010 been reduced from 4096 to 256. (I don't know any reason for the very
5011 large old value. If the new smaller value turns out to break something,
5012 I'll probably just bump it back up.)
5013 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5015 * Many, many bugs reported by Peter Van Eynde have been added to
5016 the BUGS list; some have even been fixed.
5017 * While enabling dynamic object file loading, I tried to make the
5018 code easier to understand, renaming various functions and variables
5019 with less ambiguous names, and changing some function calling
5020 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5021 * While trying to figure out how to do the OpenBSD port, I tried to
5022 clean up some of the code in src/runtime/. In particular, I dropped
5023 support for non-POSIX signal handling, added various comments,
5024 tweaked the code to reduce the number of compilation warnings, and
5025 renamed some files to increase consistency.
5026 * To support the new automatic configuration functionality in make.sh,
5027 the source file target-features.lisp-expr has been replaced with the
5028 source file base-target-features.lisp-expr and the machine-generated
5029 file local-target-features.lisp-expr.
5030 * fixed a stupid quoting error in make.sh so that using CMU CL
5031 "lisp -batch" as cross-compilation host works again
5033 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5035 * DESCRIBE no longer tries to call itself recursively to describe
5036 bound/fbound values, so that it no longer fails on symbols which are
5037 bound to themselves (like keywords, T, and NIL).
5038 * DESCRIBE now works on generic functions.
5039 * The printer now prints less-screwed-up representations of closures
5040 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5041 * A private symbol is used instead of the :EMPTY keyword previously
5042 used to mark empty slots in hash tables. Thus
5043 (DEFVAR *HT* (MAKE-HASH-TABLE))
5044 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5045 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5046 now does what ANSI says that it should. (You can still get
5047 similar noncompliant behavior if bang on the hash table
5048 implementation with all the symbols you get back from
5049 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5050 This breaks binary compatibility, since tests for equality to
5051 :EMPTY are wired into things like the macroexpansion of
5052 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5054 * There's now a minimal placeholder implementation for CL:STEP,
5055 as required by ANSI.
5056 * An obscure bug in the interaction of the normal compiler, the byte
5057 compiler, inlining, and structure predicates has been patched
5058 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5059 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5061 * Missing ordinary arguments in a macro call are now detected even
5062 when the macro lambda list contains &KEY or &REST.
5063 * The debugger no longer complains about encountering the top of the
5064 stack when you type "FRAME 0" to explicitly instruct it to go to
5065 the top of the stack. And it now prints the frame you request even
5066 if it's the current frame (instead of saying "You are here.").
5067 * As specified by ANSI, the system now always prints keywords
5068 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5070 * The default initial SIZE of HASH-TABLEs is now smaller.
5071 * Type information from CLOS class dispatch is now propagated
5072 into DEFMETHOD bodies, so that e.g.
5073 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5075 is now basically equivalent to
5076 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5077 (DECLARE (TYPE SINGLE-FLOAT X))
5079 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5080 operation, without having to do run-time type dispatch.
5081 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5082 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5083 * Since I don't seem to be making big file reorganizations very often
5084 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5085 is overflowing my ability to conveniently back them up), I've finally
5086 checked the system into CVS. (The CVS repository is on my home system,
5087 not at SourceForge -- putting it on SourceForge might come later.)
5088 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5089 high-level GC-NOTIFY-FOO functions send their output. (There's
5090 still very little control of where low-level verbose GC functions
5091 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5092 less than it used to -- the GC-NOTIFY-FOO functions are now under
5093 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5094 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5095 in only one place in the source code, and propagates it automatically
5096 everywhere that it's needed. Thus e.g. when I bump the version from
5097 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5098 * The C source files now include boilerplate legalese and documentation
5099 at the head of each file (just as the Lisp source files already did).
5100 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5101 to his page will be replaced with a link to his new CLiki service.
5103 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5105 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5106 * The build process now looks for GNU make under the default name "gmake",
5107 instead of "make" as it used to. If GNU make is not available as "gmake"
5108 on your system, you can change this default behavior by setting the
5109 GNUMAKE environment variable.
5110 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5111 can build without error under CMU CL.
5113 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5115 * There is now a partial SBCL user manual (with some new text and some
5116 text cribbed from the CMU CL manual).
5117 * The beginnings of a profiler have been added (starting with the
5118 CMU CL profiler and simplifying and cleaning up). Eventually the
5119 main interface should be through the TRACE macro, but for now,
5120 it's still accessed through vaguely CMU-CL-style functions and macros
5121 exported from the package SB-PROFILE.
5122 * Some problems left over from porting CMU CL to the new
5123 cross-compilation bootstrap process have been cleaned up:
5124 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5125 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5126 part when getting rid of the compiler *BACKEND* stuff.)
5127 ** The value of *NULL-TYPE* was screwed up, because it was
5128 being initialized before the type system knew the final
5129 definition of the 'NULL type. This screwed up several key
5130 optimizations in the compiler, causing inefficiency in all sorts
5131 of places. (I found it because I wanted to understand why
5132 GET-INTERNAL-RUN-TIME was consing.)
5133 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5134 PROCLAIM FTYPE information. Unfortunately this broke binary
5135 compatibility again, since now the forms output by DEFGENERIC
5136 to refer to functions which didn't exist in 0.6.3.
5137 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5138 can use the new (as of 0.6.3) transform for SOME into MAP into
5140 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5141 values to (INTEGER 0 1000000), so that the time code will no longer
5142 occasionally get blown up by Linux returning 1000000 microseconds
5143 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5144 its output conform to the ANSI spec. (Alas, this makes its output
5145 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5146 * A full call to MAP NIL with a single sequence argument no longer conses.
5147 * fixes to problems pointed out by Martin Atzmueller:
5148 * The manual page no longer talks about multiprocessing as though
5149 it were currently supported.
5150 * The ILISP support patches have been removed from the distribution,
5151 because as of version 5.10.1, ILISP now supports SBCL without us
5152 having to maintain patches.
5153 * added a modified version of Raymond Toy's recent CMU CL patch for
5154 EQUALP comparison of HASH-TABLE
5156 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5158 * The system still can't cross-compile itself with
5159 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5160 entails), but at least it can compile more of itself that way
5161 than it used to be able to, and various buglets which were uncovered
5162 by trying to cross-compile itself that way have now been fixed.
5163 * This release breaks binary compatibility again. This time
5164 at least I've incremented the FASL file format version to 2, so that the
5165 problem can be detected reliably instead of just causing weird errors.
5166 * various new style warnings:
5167 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5168 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5169 ** using the lexical binding of a variable named in the *FOO* style
5170 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5171 as specified by ANSI.
5172 * *RANDOM-STATE* is no longer automatically initialized from
5173 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5174 default behavior of the system is to repeat its behavior every time
5175 it's run. If you'd like to change this behavior, you can always
5176 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5177 old convention there was no comparably easy way to get the system to
5178 repeat its behavior every time it was run.
5179 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5180 FTYPE declarations has been removed, in favor of their ANSI
5181 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5182 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5183 the types of their sequence arguments can be determined at compile time.
5184 This is done through a new open code expansion for MAP which eliminates
5185 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5186 argument types can be determined at compile time.
5187 * The optimizer now transforms COERCE into an identity operation when it
5188 can prove that the coerced object is already of the correct type. (This
5189 can be a win for machine generated code, including the output of other
5190 optimization transforms, such as the MAP transform above.)
5191 * Credit information has been moved from source file headers into CREDITS.
5192 * Source file headers have been made more standard.
5193 * The CASE macro now compiles without complaining even when it has
5196 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5198 * (Note that the way that the PCL macroexpansions were rewritten
5199 to accommodate the change in DEFGENERIC below breaks binary
5200 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5201 not run under sbcl-0.6.2. Once we get out of alpha releases,
5202 i.e. hit release 1.0.0, we'll probably try to maintain binary
5203 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5204 and sbcl-1.4.4. Until then, however, it might be fairly common
5205 for maintenance releases to break binary compatibility.)
5206 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5208 * The reporting of unhandled signals has been changed to print some
5209 explanatory text as well as the report form. (Previously only
5210 the report form was printed.)
5211 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5212 it defines, so that the compiler no longer issues undefined function
5213 warnings for compiled-but-not-yet-loaded generic functions.
5214 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5215 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5216 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5217 section of the ANSI spec are supported.
5218 * The "" nickname for the "KEYWORD" package has been removed.
5219 The reader still handles symbol tokens which begin with a package marker
5220 as keywords, but it doesn't expose its mechanism for doing so in the
5221 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5222 * The system now issues STYLE-WARNINGs for contradictory TYPE
5223 proclamations. (Warnings for contradictory FTYPE proclamations would
5224 be nice too, but those can't be done usefully unless the type system
5225 is made smarter about FUNCTION types.)
5226 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5227 systematized, so that "*target-*.lisp is supposed to exist only on the
5228 target and imply that there's a related file which exists on the
5229 host, and *host-*.lisp is supposed to exist only on the host and imply
5230 that there's a related file which exists on the target. This involves a
5231 lot of renaming. Hopefully the acute confusion caused by the renaming
5232 will be justified by the reduction in chronic confusion..
5233 ** runtime-type.lisp -> early-target-type.lisp
5234 ** target-type.lisp -> late-target-type.lisp
5235 ** early-host-format.lisp -> early-format.lisp
5236 ** late-host-format.lisp -> late-format.lisp
5237 ** host-error.lisp -> misc-error.lisp
5238 ** early-error.lisp -> early-target-error.lisp
5239 ** late-error.lisp -> late-target-error.lisp
5240 ** host-defboot.lisp -> early-defboot.lisp
5241 ** code/misc.lisp -> code/target-misc.lisp
5242 ** code/host-misc.lisp -> code/misc.lisp
5243 ** code/numbers.lisp -> code/target-numbers.lisp
5244 ** code/early-numbers.lisp -> numbers.lisp
5245 ** early-host-type.lisp -> early-type.lisp
5246 ** late-host-type.lisp -> late-type.lisp
5247 ** host-typep.lisp -> typep.lisp
5248 ** load.lisp -> target-load.lisp
5249 ** host-load.lisp -> load.lisp
5250 ** host-disassem.lisp -> disassem.lisp
5251 ** host-insts.lisp -> insts.lisp
5252 ** byte-comp.lisp -> target-byte-comp.lisp
5253 ** host-byte-comp.lisp -> byte-comp.lisp
5254 ** host-signal.lisp -> signal.lisp
5255 ** host-defstruct.lisp -> defstruct.lisp
5256 ** late-target-type.lisp -> deftypes-for-target.lisp
5257 Furthermore, several other previously target-only files foo.lisp (e.g.
5258 hash-table.lisp and random.lisp) have been split into a target-and-host
5259 foo.lisp file and a target-only target-foo.lisp file, with their key type
5260 definitions in the target-and-host part, so that the cross-compiler will
5261 know more about target types.
5262 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5263 gone away. In their place are various *BACKEND-FOO* variables
5264 corresponding to the slots of the old structure.
5265 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5266 into the target SBCL has been fixed.
5267 * The chill.lisp system for loading cold code into a running SBCL
5269 * Support for the CMU CL "scavenger hook" extension has been removed.
5270 (It was undocumented and unused in the CMU CL sources that SBCL was
5271 derived from, and stale in sbcl-0.6.1.)
5272 * Various errors in the cross-compiler type system were detected
5273 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5274 (enabling various consistency checks). Many of them were fixed,
5275 but some hard problems remain, so the compiler is back to
5276 running without *TYPE-SYSTEM-INITIALIZED* for now.
5277 * As part of the cross-compiler type system cleanup, I implemented
5278 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5279 * I have started adding UNCROSS calls throughout the type system
5280 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5281 on cross-compiler input files will be able to go away, and various
5283 * CONSTANTP now returns true for quoted forms (as explicitly required
5286 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5288 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5289 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5290 (MAKE-LIST -1). In the longer term, it ought to become true
5291 that declarations are assertions even at SAFETY 1. For now, it's not
5292 quite true even at SAFETY 3, but it's at least more nearly true..
5293 (Note that this change seems to increases the size of the system by
5294 O(5%) and to decrease the speed of the compiler by 20% or more.)
5295 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5296 for the problem of printing dozens of lines of distracting information
5297 about low-level system machinery as part of the top stack frame
5298 on entry to the debugger when an undefined function was called.
5299 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5300 is not reset to COMMON-LISP-USER.
5301 * Compilation of stuff related to dyncount.lisp has been made conditional
5302 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5303 smaller. The various dyncount-related symbols have been moved into
5304 a new "SB-DYNCOUNT" package.
5305 * tty-inspect.lisp has been renamed to inspect.lisp.
5306 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5307 feature has gone away. (When we eventually port to other flavors of
5308 libc and/or Unix, we'll try to make the differences between flavors
5309 invisible at the user level.)
5310 * Various other *FEATURES* tags, and/or their associated conditionals,
5311 have been removed if obsolescent, or given better documentation, or
5312 sometimes given more-mnemonic names.
5314 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5316 * tidied up "make.sh" script
5317 * tidied up system directory structure
5318 * better "clean.sh" behavior
5319 * added doc/FOR-CMUCL-DEVELOPERS
5320 * many many small tweaks to output format, e.g. removing possibly-confusing
5321 trailing #\. character in DESCRIBE-INSTANCE
5322 * (EQUALP #\A 'A) no longer signals an error.
5323 * new hashing code, including EQUALP hashing
5324 * tidied up Lisp initialization and toplevel
5325 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5326 * command line argument processing
5327 * added POSIX-GETENV function to deal with Unix-ish environment variables
5328 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5329 terminating SBCL on EOF
5330 * non-verbose GC by default
5331 * There is no more "sbcl" shell script; the sbcl file is now the C
5332 runtime executable (just like CMU CL).
5333 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5335 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5336 symbol and package information as Lisp native symbol and package objects
5337 instead of strings naming symbols and strings naming packages. This way,
5338 whenever packages are renamed (as in warm init), debug information is
5339 transformed along with everything else.
5340 * tweaked the optimization policy declarations which control the building
5341 of SBCL itself. Now, among other things, the system no longer saves
5342 source location debugging information. (This helps two problems at once
5343 by reducing SBCL size and by keeping SBCL from trying to look for its
5344 sources -- which may not exist -- when reporting errors.)
5345 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5346 debugging and testing purposes
5347 * cleaned up printing, making the printer call PRINT-OBJECT for
5348 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5349 methods, giving nearly-ANSI behavior
5350 * converted almost all special variables to use *FOO* naming convention
5351 * deleted PARSE-TIME functionality, since it can be done portably
5352 * moved some files out of cold init into warm init
5353 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5355 * regularized formatting of source files
5356 * added an install.sh script
5357 * fixed ridiculous memory usage of cross-compiler by making
5358 compiler/alloc.lisp not try to do pooling unless it can hook
5359 itself into the GC of the cross-compilation host. Now the system
5360 builds nicely on my old laptop.
5361 * added :SB-ALLOC in target-features.lisp-expr
5362 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5363 was not implemented)
5364 * re-did condition handling and note reporting in the compiler. Notes
5365 are no longer handled by signalling conditions. Style warnings
5366 and warnings are handled more correctly and reported in such a way
5367 that it's easy to find one or the other in your output (so that you
5368 can e.g. figure out which of many problems caused COMPILE-FILE to
5370 * changed the severity of several compiler warnings from full WARNING
5371 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5372 compiler note reporting so that it doesn't use the condition system
5373 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5374 COMPILE-FILE command)
5375 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5376 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5377 no longer supported, since their implementation was deeply intertwingled
5378 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5379 * removed bogus "support" for compiler macros named (SETF FOO), and
5380 removed the compiler macro for SETF INFO (but only after making a fool
5381 of myself on the cmucl-imp mailing list by posting a bogus patch for
5382 DEFINE-COMPILER-MACRO..)
5383 * Compiled files containing forms which have side effects on the Lisp
5384 reader (such as DEFPACKAGE forms) are now handled more correctly.
5385 (Compiler queuing of top level lambdas has been suppressed by setting
5386 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5387 * deleted various currently-unused source files, e.g. gengc.lisp. They
5388 may be added back at some point e.g. when porting to other architectures,
5389 but until they are it's distracting to distribute them and to try to
5391 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5392 there were so many of them they're just distractions, and UNCROSS is
5393 known to be able to handle the current sources
5394 * moved PROFILE functionality into TRACE, so that it will be clear
5395 how the wrapping and unwrapping of functions when you profile them
5396 interacts with the wrapping and unwrapping of functions when you
5397 trace them. (Actually, the functionality isn't there yet, but at least
5398 the interface specification is there. Hopefully, the functionality will
5399 arrive with some future maintenance release.)
5400 * removed host-oops.lisp
5401 * changed signature of QUIT function to allow UNIX-CODE argument
5402 * fixed READ-SEQUENCE bug
5403 * tweaked verbose GC output so that it looks more like the progress
5404 output that ANSI specifies for functions like LOAD
5405 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5406 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob