1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.35:
3 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
4 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
5 but work on type specifiers.
6 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
7 to name a type specifier.
8 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
9 specifier is valid where "valid" basically means "would be accepted as
10 second argument of TYPEP".
11 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
12 returns the function's declared, or derived FTYPE.
13 * new feature: SB-POSIX now supports accessing the d_ino member of
14 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
15 * new feature: MAKE-RANDOM-STATE has been extended to accept octet vectors,
16 (SIMPLE-ARRAY (UNSIGNED-BYTE 32) (*)), and UNSIGNED-BYTE arguments in
17 addition to the ones documented in the language specification. Also,
18 (MAKE-RANDOM-STATE T) will attempt to initialize the returned state
19 from the operating system's PRNG where possible. (Thanks to
20 Fare Rideau; launchpad bug lp#310116)
21 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
22 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
23 * bug fix: Fix grammer and style issues for the docstrings of
24 printer-related variables and functions. (Thanks to mon_key; launchpad
26 * bug fix: fix compilation on chenygc platforms. Thanks to Larry Valkama and
28 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
29 in a row even though a handler defered the deadline long into the
31 * bug fix: a deadline handler was run without interrupts enabled for a
32 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
33 in infinitely spinning, non-killable threads.
34 * bug fix: backtrace from internal-errors on x86-64 os x was truncated
35 before reaching the erring stack frame.
37 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
38 * optimization: ROUND with a single single-float or double-float argument
39 is properly inlined when possible.
40 * optimization: Slightly better code is generated for integer<->float
41 conversions and for single-float<->double-float conversions on x86-64.
42 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
43 code for 32-bit and 64-bit rotations on x86-64.
44 * bug fix: The install script changes the ownership of directories as well
45 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
46 launchpad bug lp#508485)
47 * bug fix: TRUNCATE with a single single-float or double-float argument is
48 properly inlined when possible. (launchpad bug lp#489388)
49 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
50 no longer causes a compiler error on x86 and ppc.
51 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
52 always relative to *READTABLE* rather than the passed argument.
54 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
55 * minor incompatible change: threading support is now enabled by default
57 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
59 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
60 are now caught and reported just like errors during macroexpansion.
61 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
62 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
63 * enhancement: ASDF systems can now depends on SB-QUEUE.
64 * fixes and improvements related to Unicode and external formats:
65 ** bug fix: error handling and restart usage in the ucs-2 external format
67 ** there is now an implementation of the ucs-4 external format.
68 ** the utf-16 and utf-32 external formats are supported.
69 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
70 in the environment. setenv() and unsetenv() are also provided. (reported by
71 Fare Rideau; launchpad bug lp#460455)
72 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
73 loading. This ensures sensible errors for .FASL files from other
74 implementations on case-insensitive filesystems. (reported by Willem
75 Broekema; launchpad bug lp#489417)
76 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
77 Willem Broekema; launchpad bug lp#489698).
78 * bug fix: some minor code rearrangements to reenable warning-free building
79 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
80 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
82 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
85 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
86 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
87 * improvement: support O_LARGEFILE access to files larger than 2GB on
88 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
89 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
90 definitions for methods specializing on the passed class itself.
91 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
92 definitions for methods specializing on the passed class itself, or on
94 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
95 about itself during the build (e.g. for M-? in Slime), if this flag is
96 enabled in customize-target-features.lisp. This will increase the core
97 size by about 5-6mb, though, so it's mostly interesting to SBCL
99 * new feature: various GENCGC tuning parameters have been experimentally
100 documented and exported from SB-EXT. See documentation for details.
101 * fixes and improvements related to Unicode and external formats:
102 ** the Unicode character database has been upgraded to the
103 Unicode 5.2 standard, giving names and properties to a number of new
104 characters, and providing a few extra characters with case
106 ** improvement: restarts for providing replacement input/output on coding
107 errors for fd-stream external formats.
108 ** improvement: where :<encoding> is a keyword corresponding to an
109 external format the system supports, it is now possible to specify
110 (:<encoding> :replacement <character>) as an external format which will
111 automatically substitute <character> on encoding or decoding errors for
112 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
114 ** improvement: the file streams underlying the standard streams (such as
115 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
116 which uses the replacement mechanism to handle encoding errors,
117 preventing various infinite error chains and unrecoverable I/O
119 ** minor incompatible change: the utf-8 external format now correctly
120 refuses to encode Lisp characters in the surrogate range (char-codes
121 between #xd800 and #xdfff).
122 ** fix a typo preventing conversion of strings into octet vectors
123 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
125 ** fix a bug in the octet multibyte handling of decoding errors and the
126 USE-VALUE restart. (launchpad bug lp#314939)
127 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
128 restart on fd-stream decoding errors.
129 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
130 error is near the end of file.
131 ** fix a double-error case in unibyte octet conversions, when the first
132 use of USE-VALUE is ignored.
133 ** fix bugs in handling of undefined code points in unibyte encodings.
134 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
135 streams after an UNREAD-CHAR.
136 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
137 object is allocated in a boxed region of dynamic space.
138 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
139 fork with multiple Lisp threads running is made, instead of going
140 ahead with unpredictable consequences. (reported by Leslie Polzer)
141 * bug fix: uses of slot accessors on specialized method parameters within
142 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
143 error while finalizing the class. This fix may cause classes with slot
144 accessors to be finalized later than previously. (reported by Lars Rune
145 Nøstdal; launchpad bug lp#473699)
146 * bug fix: restore buildability on the MIPS platform. (regression from
147 1.0.30.38, reported by Samium Gromoff)
148 * bug fix: inspecting closures is less likely to fail with a type error.
149 * bug fix: no timer starvation when setting the system clock back.
150 (launchpad bug lp#460283)
151 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
152 standard pprint dispatch table as specified by CLHS.
153 * bug fix: give CLISP a hint about a type declaration to enable it to build
154 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
156 * bug fix: correctly dump literal objects in defaulting forms of arglists.
157 (reported by Attila Lendvai; launchpad bug lp#310132)
158 * bug fix: distinguish in type specifiers between arrays that might be
159 complex and arrays that are definitely complex. (launchpad bug lp#309129)
160 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
161 type. (reported by Levente Mészáros; launchpad bug lp#485972)
162 * bug fix: setting the value of a symbol-macro within a method in the
163 presence of type declarations works properly again. (reported by Iban
164 Hatchondo; launchpad bug lp#485019)
166 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
167 * optimization: faster FIND and POSITION on strings of unknown element type
168 in high SPEED policies. (thanks to Karol Swietlicki)
169 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
171 * improvement: better error signalling for bogus parameter specializer names
172 in DEFMETHOD forms (reported by Pluijzer)
173 * bug fix: DELETE-FILE once again works on logical pathnames (regression
175 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
177 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
178 removes previous default initargs (reported by Lars Rune Nøstdal and
180 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
181 lambda-lists. (reported by Peter Seibel)
182 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
183 correctly when starting from an executable core without saved runtime
184 options (reported by Faré Rideau, thanks to Zach Beane)
185 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
186 an optimization note instead. (reported by Martin Cracauer)
187 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
188 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
189 new process group if it doesn't need to share stdin with the sbcl
190 process. (thanks to Leslie Polzer)
191 * bug fix: SATISFIES could be misoptimized to refer to a local function.
192 (reported by Stanislaw Halik)
194 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
195 * improvement: stack allocation is should now be possible in all nested
196 inlining cases: failure to stack allocate when equivalent code is manually
197 open coded is now considered a bug.
198 * improvements related to Unicode:
199 ** the Unicode character database has been upgraded to the
200 Unicode 5.1 standard, giving names and properties to a number of new
201 characters, and providing a few extra characters with case
203 ** the system now recognizes and produces names for Unicode Hangul
205 ** the EBCDIC-US external-format is now supported for octet operations
206 (as well as for stream operations).
207 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
208 be used to output toplevel compile-time effects into a separate .CFASL
210 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
211 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
213 * optimization: TRUNCATE on known single- and double-floats is upto 25%
215 * optimization: division of floating point numbers by constants uses
216 multiplication by reciprocal when an exact reciprocal exists.
217 * optimization: multiplication of single- and double-floats floats by
218 constant two has been optimized.
219 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
220 sufficient type information is available. (thanks to Leslie Polzer)
221 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
222 known structure objects are as efficient as defstruct generated accessors.
223 * optimization: unused vector creation can now be optimized away.
224 * improvement: ASDF systems can now depends on SB-INTROSPECT.
225 * improvement: a STYLE-WARNING is signalled when a generic function
226 clobbers an earlier FTYPE proclamation.
227 * improvement: the compiler is able to track the effective type of
228 generic function across method addition and removal even in the
229 absence of an explicit DEFGENERIC.
230 * improvement: DESCRIBE now reports on symbols naming undefined
231 but assumed or declared function as well.
232 * improvement: recompilation of systems using SB-GROVEL now works
233 (thanks to Leslie Polzer)
234 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
235 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
237 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
238 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
239 well as user defined declaration names.
240 ** VARIABLE-INFORMATION is now aware of alien variables.
241 * improvement: improved address space layout on OpenBSD (thanks to Josh
243 * improvement: pretty-printing of various Lisp forms has been improved
244 (thanks to Tobias Rittweiler)
245 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
246 unused were deleted in safe code. (reported by John Fremlin)
247 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
249 * bug fix: some out-of-line array predicates were missing (reported by
251 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
253 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
254 (thanks to Larry D'Anna)
255 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
256 as well. (reported by Josh Elsasser)
257 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
258 leading to possible attempts to delete the same file twice. See docstring
259 on DELETE-FILE for details. (reported by John Fremlin)
260 * bug fix: DELETE-FILE once again deletes the file named by the pathname
261 designator argument, rather than its truename. (reported by Luis
263 * bug fix: the low-level debugger had 32-bit assumptions and was missing
264 information about some array types. (thanks to Luis Oliveira)
265 * bug fix: moderately complex combinations of inline expansions could
266 be miscompiled if the result was declared to be dynamic extent.
267 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
268 form (+ <variable> <integer>) were miscompiled under certain
270 * bug fix: in some cases no compiler note about failure to stack allocate
271 was emitted, even if the objects were in fact heap allocated.
272 * bug fix: minor violation of "otherwise inaccessible" rule for stack
273 allocation could cause objects users might reasonably expect to
274 be heap allocated to be stack allocated.
275 * bug fix: DESCRIBE signalled an error for generic functions under
276 certain circumstances. (thanks to Leslie Polzer)
277 * bug fix: Fixed spelling of an error message.
279 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
280 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
281 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
282 of SB-THREAD:THREAD-ERROR-THREAD.
283 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
284 * new feature: docstrings for local and anonymous functions are no longer
285 discarded. (thanks to Leslie Polzer)
286 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
287 values in other threads.
288 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
289 about object allocation.
290 * optimization: division of a real float by a complex float is implemented
291 with a specialised code sequence.
292 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
293 keywords is an order of magnitude faster.
294 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
295 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
296 methods, and similarly for non-standard metaclass classes as long as there
297 are no methods additional on MAKE-INSTANCE.
298 * optimization: more efficient type-checks for FIXNUMs when the value
299 is known to be a signed word on x86 and x86-64.
300 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
301 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
303 * optimization: compiler is smarter about delegating argument type checks to
305 * optimization: several character functions are now compiled somewhat more
306 efficiently. (reported by Lynn Quam)
307 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
308 * improvement: less unsafe constant folding in floating point arithmetic,
309 especially for mixed complex/real -float operations.
310 * optimization: constant double and single floats are stored in native
311 unboxed format on x86[-64].
312 * optimization: smarter code for arithmetic operations with constant floats,
313 complex floats, or integers on x86[-64].
314 * optimization: smarter code for conjugate/multiplication of float complexes
315 and abs/negate of floats on x86-64.
316 * optimization: more efficient complex float and real float operations on
318 * improvement: complex float division is slightly more stable.
319 * improvement: DESCRIBE output has been reworked to be easier to read and
320 contains more pertinent information.
321 * improvement: failure to provide requested stack allocation compiler notes
322 provided in all cases (requested stack allocation not happening without a
323 note being issued is now considered a bug.)
324 * bug fix: SB-POSIX exports the documented types and functions
325 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
326 types. (reported by "abhi")
327 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
328 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
329 (thanks to Paul Khuong)
330 * bug fix: looping around HANDLER-CASE could silently consume stack space
331 on each iteration. (reported by "foobar")
332 * bug fix: better error signalling when calls to functions seeking elements
333 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
334 (reported by Tobias Rittweiler)
335 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
336 directory components now works as it used to. (various prolems reported by
337 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
338 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
339 (reported by Elliot Slaughter, thanks to Stas Boukarev)
340 * bug fix: bogus undefined variable warnings from fopcompiled references to
341 global variables. (thanks to Lars Rune Nøstdal)
342 * bug fix: foreign function names should now appear in backtraces on
343 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
344 * bug fix: SETF compiler macro documentation strings are not discarded
346 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
347 (thanks to Alex Plotnick)
348 * bug fix: SLEEP accepts large integer arguments, truncating them to
349 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
350 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
351 * bug fix: compiler notes for expensive slot type checks could be emitted
352 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
354 changes in sbcl-1.0.29 relative to 1.0.28:
355 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
356 https://bugs.launchpad.net/sbcl
357 Bugs can be reported directly there, or by sending email to
358 sbcl-bugs@lists.sourceforge.net
359 (no subscription required.)
360 * minor incompatible change: under weak type checking policy integer
361 types are weakened less aggressively.
362 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
363 allowed to return, which causes SBCL to quit with exit status 0. Previously
364 if the function returned with a small integer return value, that value
365 was accidentally reused as the exit status.
366 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
367 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
368 :HASH-FUNCTION argument. Refer to user manual for details.
369 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
371 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
372 microseconds since the Unix epoch on all platforms.
373 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
374 allows the compiler to safely elide boundedness checks for special
376 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
377 the symbol, prohibits both lexical and dynamic binding. This is mainly an
378 efficiency measure for threaded platforms, but also valueable in
380 * new feature: UNC pathnames are now understood by the system on Windows.
381 * optimization: the compiler uses a specialized version of FILL when the
382 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
384 * optimization: accesses to potentially non-simple arrays where element type
385 is known are 50% faster.
386 * optimization: compiler now generates faster array typechecking code.
387 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
389 * optimization: multidimensional array accesses in the absence of type
390 information regarding array rank are approximately 10% faster due to
391 open coding of ARRAY-RANK.
392 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
393 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
395 * optimization: result of call to VECTOR can now be stack allocated.
396 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
397 as long as the resulting array is one-dimensional and has a known
398 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
399 length of the list matches the known length of the vector does not
400 allocate the list as an intermediate step. Ditto for VECTOR and simple
402 * optimization: MAKE-ARRAY can now stack allocate in the presence of
403 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
404 known element type, and is known to be simple and one dimensional.
405 * improvement: SBCL now emits a compiler note where stack allocation was
406 requested but could not be provided (not in all cases, unfortunately)
407 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
408 * improvement: pretty-printing loop has been implemented properly. (thanks
409 to Tobias Rittweiler)
410 * documentation: CLOS slot typechecing policy has been documented.
411 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
412 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
413 pointer, leading to memory faults. (thanks to Bart Botta)
414 * bug fix: better floating point exception handling on x86/OpenBSD.
415 (thanks to Josh Elsasser)
416 * bug fix: exit status from QUIT when called under --script was lost
417 (reported by Hubert Kauker)
418 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
419 same implementation of FILL to initialize the array, even if a more
420 efficient one was available (reported by Stas Boukarev, thanks to
422 * bug fix: potential miscompilation of array stack allocation on x86 and
423 x86-64. (reported by Time Tossavainen)
424 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
425 result in their subforms being treated as top level forms. (reported by
427 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
428 than a machine register could leave garbage in the high bits of the
429 result register (bug 316325).
430 * bug fix: disable address space randomization Linux/x86-64 as well,
431 not just x86-64. (reported by Ken Olum)
432 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
433 generate incorrect code.
434 * bug fix: #201; type inference for CONS and ARRAY types could derive
435 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
436 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
437 could not be assigned to or bound with PROGV. (reported by Lorenz
439 * bug fix: the value of CL:- in the inspector was the previous expression
440 evaluated rather than the expression being evaluated.
441 * bug fix: constants can no longer be locally declared special.
442 * bug fix: signals delivered to threads started from foreign land (read:
443 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
444 thread by blocking all signals and resignalling.
445 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
446 from :INITFORM, if any.
448 changes in sbcl-1.0.28 relative to 1.0.27:
449 * a number of bugs in cross-compilation have been fixed, with the ultimate
450 result that building under (at least) clisp should be much more reliable.
451 * minor incompatible changes: echo-streams now propagate unread-char to the
452 underlying input stream, and no longer permit unreading more than one
454 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
455 frames, allowing for instance more reliable backtraces.
456 * improvement: the debugger REPL can now reference lexical variables
457 by name directly for code compiled with (DEBUG 3).
458 * improvement: errors from malformed declarations now have better source
459 paths associated with them. (thanks to Tobias Rittweiler)
460 * optimization: faster local calls on x86/x86-64
461 * bug fix: some error messages for out-of-bound array indexes confused the
462 index and the bound. (thanks to Stas Boukarev)
463 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
465 * bug fix: running regressions tests in shells without OSTYPE set now works.
466 (reported by Harald Hanche-Olsen)
467 * bug fix: more robust static space exhaustion signalling from
468 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
469 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
470 docstring away instead of storing it under names such as (LAMBDA (X)).
471 (reported by Leslie Polzer)
472 * bug fix: timers could go off in the wrong order, be delayed indefinitely
473 (thanks to Ole Arndt for the patch)
474 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
475 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
476 potentially-invalid effective methods in its cache.
477 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
478 instances as well (thanks to Paul Khuong)
479 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
480 SB-POSIX:WAITPID and their C equivalents.
481 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
483 changes in sbcl-1.0.27 relative to 1.0.26:
484 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
485 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
486 * improvement: the system either recovers from stack exhaustion or dies
487 properly as opposed to leaving the user uncertain of whether the handler
488 trampled on some random memory next to the stack or having to rely on
489 --lose-on-corruption (which is still a good idea to use in production
490 because stack exhaustion can happen in signal handlers which will likely
492 * bug fix: fix gc related interrupt handling bug on ppc (regression from
493 1.0.25.37, reported by Harald Hanche-Olsen)
494 * bug fix: work around signal delivery bug in darwin (regression from
495 1.0.25.44, reported by Sidney Markowitz)
496 * bug fix: fix ERROR leaking memory (reported by David Thompson)
498 changes in sbcl-1.0.26 relative to 1.0.25:
499 * incompatible change: an interruption (be it a function passed to
500 INTERRUPT-THREAD or a timer function) runs in an environment where
501 interrupts can be enabled. The interruption can use
502 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
503 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
504 potentially running out of stack. Keep in mind that in the absence
505 of WITHOUT-INTERRUPTS some potentially blocking operation such as
506 acquiring a lock can enable interrupts.
507 * incompatible change: GC-OFF and GC-ON are removed, as they were
508 always unsafe. Use WITHOUT-GCING instead.
509 * new feature: runtime option --disable-ldb
510 * new feature: runtime option --lose-on-corruption to die at the
511 slightest hint of possibly non-recoverable errors: running out of
512 memory, stack, alien stack, binding stack, encountering a memory
513 fault, etc. In the absence of --lose-on-corruption a warning is
515 * enhancement: detect binding stack exhaustion
516 * enhancement: detect alien stack exhaustion on x86/x86-64
517 * improvement: generally more stable and reliable interrupt handling
518 * improvement: there is a per thread interruption queue,
519 interruptions are executed in order of arrival
520 * improvement: a repeating timer reschedules itself when the it has
521 finished, but expiration times are spaced equally. If an
522 expiration time is in the past it will trigger after a short grace
523 period that may give a chance to other things to run.
524 * optimization: slightly faster gc on multithreaded builds
525 * optimization: faster WITHOUT-GCING
526 * bug fix: when JOIN-THREAD signals an error, do it when not holding
527 important locks so that the debugger/handler doesn't produce
528 recursive errors or deadlock.
529 * bug fix: real-time signals are not used anymore, so no more
530 hanging when the system wide real-time signal queue gets full.
531 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
533 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
534 * bug fix: fix random memory faults related to interrupts on alpha
535 * bug fix: fix random memory faults related to interrupts on sparc
536 * bug fix: fix deadlocks related to starting threads
537 * bug fix: fix deadlines on locks on futex platforms
538 * bug fix: restore errno in signal handlers
539 * bug fix: fix deadlocks related to hash tables
540 * bug fix: fix deadlocks in pcl
542 changes in sbcl-1.0.25 relative to 1.0.24:
543 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
544 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
545 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
546 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
547 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
548 better name and does not return values so stale on multiprocessor systems.
549 Also, HOLDING-MUTEX-P was added for about the only sane usage of
551 * improvement: unithread builds keep track of MUTEX-VALUE.
552 * improvement: reading from a TWO-WAY-STREAM does not touch the output
553 stream anymore making it thread safe to have a concurrent reader and
554 a writer, for instance, in a pipe.
555 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
556 arguments, making compiler-macros for SETF-functions able to inspect
557 their constant arguments.
558 * improvement: COMPILE-FILE reports times with millisecond accuracy
559 (thanks to Luis Oliveira)
560 * optimization: CHAR-CODE type derivation has been improved, making
561 TYPEP elimination on subtypes of CHARACTER work better. (reported
562 by Tobias Rittweiler, patch by Paul Khuong)
563 * bug fix: setting alien structure fields of type struct by value now
564 computes the right offset for the memory copy.
565 * bug fix: compilation problem involving inlined calls to aliens with
566 result type VOID. (reported by Ken Olum)
567 * bug fix: #235a; sequential inline expasion in different policies no
568 longer reuses the functional from the previous expansion site.
569 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
570 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
571 * bug fix: named ENUMs in multiply-referenced alien record types no longer
572 cause an implied type redefinition. Regression from 1.0.21.29.
573 * bug fix: sign-extension of small signed return values now works with C
574 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
575 * improvements to the Windows port:
576 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
577 Westfold, thanks to Rudi Schlatte)
579 changes in sbcl-1.0.24 relative to 1.0.23:
580 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
581 vector of a multidimensional SIMPLE-ARRAY.
582 * new feature: the system now signals a continuable error if standard
583 readtable modification is attempted. (thanks to Tobias Rittweiler)
584 * new feature: DIRECTORY has been extended with a non-standard keyword
585 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
586 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
587 has been robustified and documented better. (thanks to Robert Goldman)
588 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
589 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
590 * tradeoff: constant FORMAT control strings are now compiled unless
591 SPACE > SPEED (previously only when SPEED > SPACE.)
592 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
594 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
596 * bug fix: lexical type declarations are now correctly reported by
597 SB-CLTL2. (reported by Larry D'Anna)
598 * bug fix: STRING-TO-OCTETS did not handle :START properly when
599 using UTF-8 as external format. (thanks to Luis Oliveira)
600 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
601 are signalled correctly. (thanks to Stas Boukarev)
602 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
603 designator. (thanks to Tobias Rittweiler)
604 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
605 designator, and returns T instead of the function. (thanks to
607 * bug fix: direct superclasses of STANDARD-CLASS and
608 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
609 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
610 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
611 when no class with the named slot yet exists no longer causes a
612 compile-time style-warning.
613 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
614 in safe code. (reported by Didier Verna)
615 * bug fix: #430; nested structure constructors can stack allocate.
616 * bug fix: on some 64-bit platforms dynamic space size was truncated
617 to #xffff0000 bytes. (reported by Benjamin Lambert)
618 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
619 REPL unusable. (reported by Daniel Herring)
620 * bug fix: return values of READ-SEQUENCE did not take :START into
621 account on file streams, regressions since 1.0.12.22. (reported by
622 Thomas Russ, patch by Paul Khuong)
623 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
624 method specializer used to confuse permuation vector optimization.
625 * bug fix: system inserted bogus implicit type declarations for local
626 special variables in DEFMETHOD bodies.
627 * bug fix: #354; duplicated frames in backtraces due to
628 non-tail-call-optimized XEPs to functions with return type NIL
630 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
631 initializes structure object slots according to DEFSTRUCT initforms,
632 and DEFSTRUCT forms :INCLUDEind structure classes defined using
633 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
634 (reported by Bruno Haible and Stephen Wilson)
635 * bug fix: #395; fill-pointer output streams used now support
636 element-type BASE-CHAR as well.
637 * bug fix: compiler error when attempting to derive return value of
638 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
640 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
642 * bug fix: Mac OS X binaries should now be portable between Leopard
645 changes in sbcl-1.0.23 relative to 1.0.22:
646 * enhancement: when disassembling method functions, disassembly
647 for the associated fast function is also produced.
648 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
650 * optimization: printing with *PRINT-PRETTY* true is now more
651 efficient as long as the object being printed doesn't require
652 special handling by the pretty printer.
653 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
654 now interact correctly with type declarations.
655 * partial bug fix: PCL detects infinite recursion during wrapper
656 validation. (thanks to Attila Lendvai)
657 * bug fix: #426; nested function calls are inlined properly.
658 Previously if FOO was an inline function, in calls of the form
659 (FOO (FOO ...)) the outer call was not inlined.
660 * bug fix: long long arguments passed in registers to alien
661 functions on PowerPC Linux and NetBSD are now handled correctly
662 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
664 changes in sbcl-1.0.22 relative to 1.0.21:
665 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
666 for the shared object in the current directory, but passes the native
667 namestring of the designated pathname to the operation system's shared
668 object loading function as-it.
669 * minor incompatible change: --disable-debugger toplevel option now takes
670 effect before processing of initialization files and --eval or --load
672 * new feature: new commandline argument: --script, which supports
673 shebang lines. See documentation for details. (based on work by
675 * new feature: SAVE-LISP-AND-DIE can save current values of
676 --dynamic-space-size and --control-stack-size in the executable core,
677 causing it to skip normal runtime option processing. See documentation
678 for details. (thanks to Zach Beane)
679 * enhancement: inoccous calls to EVAL or generic functions dispatching
680 on subclasses of eg. STREAM no longer cause compiler notes to appear.
681 * enhancement: the system no longer resignals errors from --load and
682 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
683 associated with the original error to be lost. (thanks to Ariel
685 * enhancement: :DONT-SAVE keyword argument has been added to
686 LOAD-SHARED-OBJECT for controlling interaction with
687 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
688 the effects of an earlier LOAD-SHARED-OBJECT call.
689 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
690 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
691 provided. (reported by Cedric St-Jean)
692 * bug fix: circularity handling in the reader did not treat raw
693 structure slots correctly. (reported by Cedric St-Jean)
694 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
695 file descriptors when there were none.
696 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
697 was broken. (reporteed by Willem Broekema)
698 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
699 pathnames without a directory.
700 * bug fix: COMPILE-FILE did not warn about undefined variable
701 references at toplevel, and LOAD of the resulting fasl did
703 * bug fix: functions with non-required arguments used to end up with
704 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
705 * bug fix: redefining a function with non-required arguments didn't
706 update the system's knowledge about its call signature properly.
707 * bug fix: fixed #431; incompatible alien record type redefinitions
708 are detected and handled. (reported by Neil Haven)
709 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
710 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
712 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
713 after alien stack frames.
714 * bug fix: strings passed to mk{s,d}temp lacked null termination
716 changes in sbcl-1.0.21 relative to 1.0.20:
717 * new feature: the compiler is able to track the effective type of a
718 generic function across method addition and removal.
719 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
720 appropriately typed structure slots without locking.
721 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
722 information like those gathered by TIME using a programming-friendly
724 * new feature: TIME reports time taken even if the form performs a
725 non-local transfer of control.
726 * enhancement: reduced conservativism on GENCGC platforms: on
727 average 45% less pages pinned (measured from SBCL self build).
728 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
729 mutate constant symbols or violate declaimed type of the symbol.
730 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
731 sleeping on the semaphore in heavily contested semaphores.
732 * bug fix: semaphores and condition variables were not interrupt
734 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
735 owned by other threads anymore.
736 * bug fix: FIND on lists called KEY outside the specified
737 subsequence. (reported by budden)
738 * bug fix: LOG doesn't use single-float intermediate results when
739 given mixed integer and double-float arguments, leading to better
740 precision. (reported by Bob Felts)
741 * bug fix: LOG with base zero returned values of inconsistent type.
743 changes in sbcl-1.0.20 relative to 1.0.19:
744 * minor incompatible change: OPTIMIZE qualities
745 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
746 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
747 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
748 * documentation: some slot access efficiency guidelines have been
749 added to the user manual.
750 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
751 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
752 as ASSOC and MEMEBER.
753 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
754 to more efficient EQ-comparison versions more often.
755 * optimization: enhanced derivation of DOLIST iteration variable type
757 * optimization: constant folding of simple (LIST ...) forms as DOLIST
759 * optimization: runtime lookup of function definitions can be
760 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
761 * optimization: compiler is able to derive the return type of
762 (AREF (THE STRING X) Y) as being CHARACTER.
763 * optimization: CLRHASH on empty hash-tables no longer does pointless
764 work. (thanks to Alec Berryman)
765 * optimization: REPLACE deftransforms don't punt when :START1 or
767 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
768 no longer emits a code deletion note. (reported by Andrew
770 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
771 functions with an odd number of &OPTIONAL arguments, a &REST
772 argument, and one or more &KEY arguments at the call site.
773 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
774 arguments appeared at call sites as well.
775 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
776 READ-LINE &co can no longer read from them afterwards. (reported
778 * bug fix: fixed #427: unused local aliens no longer cause compiler
779 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
781 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
782 alien-stack leakage. (reported by Andy Hefner)
783 * bug fix: PROGV signals an error when an attempt to violate declared
784 type of a variable or bind a constant is made.
785 * bug fix: SET signals an error when an attempt to violate declared
786 type of a variable is made.
787 * bug fix: restart computation during the execution of a restart
788 test function no longer causes infinite recursion. (reported by
790 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
791 signals an error. (thanks to Pierre Mai)
792 * bug fix: EXPORT left symbol unexported in conflict situations.
793 (thanks to Michael Weber)
794 * bug fix: correctly handle name conflicts involving CL:NIL.
795 (thanks to Michael Weber)
796 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
797 conflicts arising from USEing package with conflicting symbols
798 correctly. (thanks to Michael Weber)
800 changes in sbcl-1.0.19 relative to 1.0.18:
801 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
802 warnings that go otherwise unhandled will be muffled if they are
803 of the type that's the value of this variable.
804 * optimization: stack allocation is slightly more efficient on x86
806 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
807 where a raw slot always is initialized using the initform whose
808 type is not know sufficiently well a compile-time are now compiled
809 correctly. (reported by John Morrison)
810 * bug fix: compiler no longer makes erronous assumptions in the
811 presence of non-foldable SATISFIES types.
812 * bug fix: stack analysis missed cleanups of dynamic-extent
813 arguments in non-let-converted calls to local functions.
814 * improvements to the Windows port:
815 ** adjusted address spaces for building on both Win32 and
816 Win64. (thanks for John Connors)
817 * fixed some bugs revealed by Paul Dietz' test suite:
818 ** interval arithmetic during type derivation used inexact integer
819 to single-float coercions.
820 ** arithmetic operations involving large integers and single
821 floats give the same results in compiled and interpreted code.
822 ** deriving the result type of COERCE no longer signals an error
823 if the derived type of the second argument is a MEMBER type
824 containing invalid type specifiers.
825 ** ADJOIN with constant NIL as second argument works correctly.
826 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
828 changes in sbcl-1.0.18 relative to 1.0.17:
829 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
830 profiles only the current thread.
831 * minor incompatible change: changes to SYMBOL-VALUE of constants
832 defined with DEFCONSTANT now signal an error.
833 * enhancement: SB-SPROF now has support for wallclock profiling,
834 and is also able to profile specific threads. REPORT output
835 has also additional sorting options.
836 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
838 * optimization: structure allocation has been improved
839 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
840 ** out of line constructors are ~10% faster.
841 ** inline constructors are ~15% faster.
842 ** inline constructors are capable of dynamic extent allocation
843 (generally on x86 and x86-64, in some cases on other platforms
845 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
847 * optimization: file compiler is now able to coalesce non-circular
848 lists, non-base strings, and bit-vectors. Additionally, constants
849 are never referenced through SYMBOL-VALUE at runtime.
850 * optimization: code defining methods on PRINT-OBJECT (and other
851 generic functions in the COMMON-LISP package) now loads faster.
852 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
854 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
855 fasl is now deleted. (reported by Attila Lendvai)
856 * bug fix: READ-LINE always returned NIL for the last line in files.
857 (reported by Yoshinori Tahara)
858 * bug fix: more accurate disassembly annotations of foreign function
859 calls. (thanks to Andy Hefner)
860 * bug fix: trimming non-simple strings and non-string string
861 designators when the there is nothing to trim works properly.
862 (thanks to James Knight)
863 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
864 (thanks to Travis Cross)
865 * fixed some bugs revealed by Paul Dietz' test suite:
866 ** NIL is a valid function name (regression at 1.0.13.38)
867 ** FILL on lists was missing its return value (regression at 1.0.12.27)
868 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
869 fill pointers properly (regression at 1.0.12.23)
870 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
871 displacement indices properly (regression at 1.0.12.23)
873 changes in sbcl-1.0.17 relative to 1.0.16:
874 * temporary regression: user code can no longer allocate closure
875 variable storage on stack, due to bug 419 without explicitly
876 requesting it. Please consult sbcl-devel for advice if you need to
877 use this feature in the meanwhile.
878 * new feature: runtime argument --control-stack-size can be used to
879 adjust thread default control stack size.
880 * enhancement: improved TIME output
881 ** all times are reported using the measured accuracy (milliseconds
882 for real and GC times, microseconds for everything else.)
883 ** processor cycle counts on x86 and x86-64.
884 ** interpreted forms are counted for both evaluator modes.
885 ** number of lambdas converted by the compiler is reported.
886 ** CPU percentage report (computed from real and total run time.)
887 ** more comprehensive run time reporting, using a condenced format
888 ** interperted form, lambda, and page fault counts are omitted
890 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
892 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
893 * optimization: two argument forms of LAST are upto ~10% faster
894 in normal SPEED policies.
895 * optimization: NCONC no longer needs to heap cons its &REST list
896 in normal SPEED policies.
897 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
899 * bug fix: UNION and NUNION work with :TEST-NOT once more,
900 regression since 1.0.9.1. (thanks to Eric Marsden)
901 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
902 since 1.0.15.36. (thanks to Paul Khuong)
903 * bug fix: LAST when always returned the whole list when given a bignum
904 as the second argument.
905 * bug fix: dynamic extent allocation of nested lists and vectors
906 could leak to otherwise accessible parts.
907 * bug fix: invalid optimization of heap-allocated alien variable
909 * bug fix: fasl header checking is less vulnerable to different
910 platform word lengths.
911 * bug fix: more correct assembler syntax for GNU binutils
912 2.18.50.0.4 support. (thanks to Marijn Schouten)
913 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
915 * bug fix: the fopcompiler can handle LOCALLY forms (with no
916 declarations) successfully. (reported by Attila Lendvai)
918 changes in sbcl-1.0.16 relative to 1.0.15:
919 * minor incompatible change: revert the changes to sb-posix's error
920 signaling added in 1.0.14.
921 * minor incompatible change: change PROBE-FILE back to returning
922 NIL whenever we can't get a truename, as was the case before 1.0.14.
923 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
924 inherits from ERROR instead of just CONDITION.
925 * new feature: SB-INTROSPECT can provide source locations for instances
926 as well. (thanks to Tobias Rittweiler)
927 * optimization: binding special variables now generates smaller code
928 on threaded platforms.
929 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
930 and cases where no :TEST is given but the compiler can infer that
931 the element to search is of type (OR FIXNUM (NOT NUMBER)).
932 * optimization: better LOGNOT on fixnums.
933 * optimization: modular arithmetic for a particular requested width
934 is implemented using a tagged representation unless a better
935 representation is available.
936 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
937 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
938 for wellformedness and returns a specialized vector. (reported by
939 Francois-Rene Rideau)
940 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
941 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
942 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
943 unscheduling timer at the same time as another timer fires.
944 * bug fix: don't reschedule timers for dead threads.
945 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
946 * bug fix: copying output from RUN-PROGRAM to a stream signalled
947 bogus errors if select() was interrupted.
948 * enhancement: add support for fcntl's struct flock to SB-POSIX.
950 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
951 * enhancement: cleaner backtraces for interactive interrupts, as
952 well as other cases where the interesting frames used to be
953 obscured by interrupt handling frames.
954 * enhancement: untracing a whole package using (UNTRACE "FOO") is
955 now supported, and tracing a whole package using (TRACE "FOO") now
956 traces SETF-functions as well.
957 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
958 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
959 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
960 * unreadably printed representation of hash-tables now includes
962 * bug fix: partially fixed #188: type propagation from assignments
963 is now more efficient.
964 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
965 'DOUBLE-FLOAT) are not flushable.
966 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
967 full address of the object, and none of the tag bits.
968 * bug fix: readably printing hash-tables now respects other printer
969 control variables. (reported by Cedric St-Jean)
970 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
971 keyword with MAKE-HASH-TABLE.
972 * bug fix: export SB-POSIX:MKSTEMP.
973 * bug fix: SORT was not interrupt safe.
974 * bug fix: XREF accounts for the last node of each basic-block as
976 * bug fix: MAKE-INSTANCE optimizations interacted badly with
977 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
978 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
979 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
980 create obsolete instances in the case of redefinition or
981 obsoletion of a superclass. (thanks to Andy Hefner)
982 * bug fix: Support for the Alpha architecture has been revived; it had
983 suffered somewhat from lack of maintenance since sbcl-1.0.
984 * improvements to the Windows port:
985 ** The system detects the codepage to use at startup, instead of
986 using the value from the saved core. (thanks to Kei Suzuki)
988 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
989 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
990 (see documentation for details.)
991 * revived support for OpenBSD (contributed by Josh Elsasser)
992 * partially fixed bug #108: ROOM no longer suffers from occasional
993 (AVER (SAP= CURRENT END)) failures.
994 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
995 bodies no longer cause a WARNING to be signalled. (reported by
997 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
998 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
999 the bug in TRUNCATE.) (reported by Michael Weber)
1000 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1001 no samples. (reported by Andy Hefner)
1002 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1003 no longer appear as (NIL ...) frames in backtraces.
1004 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1005 is now actually exported from SB-EXT as documented. (reported by
1007 * bug fix: sb-aclrepl now correctly understands how to inspect
1008 single-floats on 64-bit platforms where single-floats are not boxed.
1009 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1010 yet been finalized. (reported by Levente Meszaros)
1011 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1012 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1013 SBCL-specific optimize qualities.
1015 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1016 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1017 an executable in the search path, and does so in the child
1018 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1019 been removed; it can be found in the CVS history, for somebody who
1020 needs that search behavior (see the manual).
1021 * minor incompatible change: compiler policy re. weakening type
1022 checks has changed: now type checks are weakened only if SAFETY < 2
1024 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1025 unparsing of directory pathnames as files. Analogously,
1026 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1027 filename to parse into a directory pathname.
1028 * enhancement: implicit generic function creation now signals a
1029 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1030 users can bind handlers for and muffle around calls to LOAD.
1031 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1032 to be used (using the default stream external format), and allows
1033 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1034 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1035 strings and vectors whose element-type or simplicity is not fully
1036 known at compile-time.
1037 * optimization: STRING-TRIM and related functions no longer allocate
1038 a new string when no trimming needs to be performed. These functions
1039 are also faster than before when the input string has been declared
1041 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1042 * optimization: READ-LINE is significantly faster for files containing
1044 * optimization: non-open coded uses of character comparison operators
1045 (e.g. char=) no longer cons when called with more than one parameter
1046 on platforms supporting dynamic-extent allocation.
1047 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1048 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1049 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1051 * bug fix: some sequence functions elided bounds checking when
1053 * bug fix: too liberal weakening of union-type checks when SPEED >
1055 * bug fix: more bogus fixnum declarations in ROOM implementation
1058 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1059 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1060 :SYNCHRONIZED argument, which makes the hash-table safe for
1061 concurrent accesses (but not iteration.) See also:
1062 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1063 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1064 * optimization: CONCATENATE on strings is an order of magnitude faster
1065 in code compiled with (> SPEED SPACE).
1066 * optimization: SUBSEQ is ~50% faster on lists.
1067 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1068 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1069 END is smaller then START.
1070 * bug fix: SB-PROFILE will no longer report extra consing for nested
1071 calls to profiled functions.
1072 * bug fix: ROOM implementation had bogus fixnum declarations which
1073 could cause type-errors when calling ROOM on large images.
1074 * bug fix: if file compilation is aborted, the partial fasl is now
1075 deleted, and COMPILE-FILE returns NIL as the primary value.
1076 * bug fix: number of thread safety issues relating to SBCL's internal
1077 hash-table usage have been fixed.
1078 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1079 be returned from its body when the values were being returned
1080 using unknown-values return convection and the W-P-O was wrapped
1081 inside an UNWIND-PROTECT.
1082 * bug fix: sb-posix should now compile again under Windows, enabling
1083 slime to work again.
1085 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1086 * incompatible change: hash-table accessor functions are no longer
1087 automatically protected by locks. Concurrent accesses on the same hash-table
1088 from multiple threads can give inconsistent results or even corrupt the
1089 hash-table completely. Multi-threaded applications should do their own
1090 locking at the correct granularity. In the current implementation it is
1091 still safe to have multiple readers access the same table, but it's not
1092 guaranteed that this property will be maintained in future releases.
1093 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1094 and will signal an error at runtime.
1095 * enhancement: SB-THREAD package now exports a semaphore interface.
1096 * enhancement: CONS can now stack-allocate on x86 and
1097 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1099 * enhancement: nested lists can now be stack allocated on
1100 platforms providing stack allocation support.
1101 * enhancement: dynamic-extent support has been extended to support
1102 cases where there are multiple possible sources for the stack
1104 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1105 if the mutex is uncontested on Linux.
1106 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1107 as specified by the CLHS. (thanks to Tobias Rittweiler)
1108 * bug fix: NaN comparison now works on x86-64.
1109 * bug fix: CLOSE :ABORT T on a stream with pending output now
1111 * bug fix: instances of non-standard metaclasses using standard
1112 instance structure protocol sometimes missed the slot type checks
1114 * bug fix: known functions can be inlined in high-debug code.
1116 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1117 * minor incompatible change: the MSI installer on Windows no longer
1118 associates .lisp and .fasl files with the installed SBCL.
1119 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1120 on Windows. (thanks to Luis Oliviera)
1121 * new feature: SB-CLTL2 contrib module now implements
1122 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1123 * optimization: scavenging weak pointers is now more efficient,
1124 requiring O(1) instead of O(N) per weak pointer to identify
1125 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1126 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1127 method bodies using constant slot-names when the first argument is
1128 a specializer parameter for the method.
1129 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1130 names, when the class of the instance is a direct instance
1131 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1132 as slow as the constant slot-name case.)
1133 * optimization: member type construction is now O(N) instead
1135 * optimization: UNION and NUNION are now O(N+M) for large
1136 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1138 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1139 now more readable in environments like Slime which display it.
1140 (thanks to Tobias C. Rittweiler)
1141 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1142 was able to infer the correct argument type for the object on which
1143 the CAS operation was being performed.
1144 * bug fix: copy propagation interfered with parallel assignment
1145 semantics in local calls. (reported by Paul Khuong)
1146 * bug fix: the signed modular fixnum shift compiled to wrong code on
1147 x86 and x86-64. (spotted by a slight modification to some of
1150 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1151 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1152 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1153 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1155 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1156 and generic function now print the object identity for anonymous
1157 instances. (thanks to Attila Lendvai)
1158 * enhancement: as an extension to MOP, SBCL now supports SETF of
1159 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1160 (thanks to Attila Lendvai)
1161 * enhancement: sb-cover has an alternate annotation mode which puts
1162 the form annotations at the car of the form, instead of annotating
1163 it completely. The benefit of this mode is that it shows better
1164 which forms were instrumented by the compiler.
1165 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1166 by printer control variables. (reported by Dan Corkill)
1167 * bug fix: system leaked memory when delayed output was performed by
1168 the OS in smaller chunks then expected. (thanks to David Smith)
1169 * bug fix: system leaked memory when file streams were not closed
1171 * bug fix: large objects written to slow streams that were modified
1172 after the write could end up with the modified state written to
1173 the underlying file descriptor.
1174 * bug fix: multiple threads operating in parallel on the same stream
1175 could cause buffer-overflows.
1176 * bug fix: source location information is stored correctly
1177 (broken since 1.0.6). This bug would generally show up as the
1178 Slime debugger highlighting the wrong form when the sldb-show-source
1180 * bug fix: Branch forms are again annotated as branches in the sb-cover
1182 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1183 on x86-64. (reported by Gregory Vanuxem)
1184 * bug fix: EQUALP could return wrong results for structures with raw
1185 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1186 word). (reported by Vjacheslav Fyodorov)
1187 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1190 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1191 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1192 atomic compare-and-swap operations on threaded platforms.
1193 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1194 allows assigning a global minimum value to optimization qualities
1195 (overriding proclamations and declarations).
1196 * enhancement: closed over variables can be stack-allocated on x86
1198 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1200 * optimization: slot definition lookup is now O(1). This speeds up
1201 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1202 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1203 * optimization: ASSOC and MEMBER can now be open-coded for all
1204 combinations of keyword arguments when second argument is constant
1205 and SPEED >= SPACE. In other cases a specialized version is
1207 * bug fix: using obsoleted structure instances with TYPEP and
1208 generic functions now signals a sensible error.
1209 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1210 (reported by Kristoffer Kvello)
1211 * bug fix: backtrace construction is now more careful when making
1212 lisp-objects from pointers on the stack, to avoid creating bogus
1213 objects that can be seen by the GC.
1214 * bug fix: defaulting of values in contexts expecting more than 7
1215 variables now works on x86-64. (reported by Christopher Laux)
1216 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1218 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1219 as the property-list of a symbol.
1220 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1221 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1222 situations requested, are once again file-compileable. (reported
1225 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1226 * MOP improvement: support for user-defined subclasses of
1227 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1228 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1229 the expansion of DEFMETHOD, is responsible for generating a form
1230 which creates a list of specializers when evaluated. Additional
1231 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1232 debugging and introspective support.
1233 * minor incompatible change: the (unsupported) spinlock interface
1234 has changed: free spinlock now has the value NIL, and a held spinlock
1235 has the owning thread as its value.
1236 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1237 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1239 * enhancement: name of a socket-stream is now "a socket" instead of
1240 "a constant string".
1241 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1242 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1243 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1244 for generic functions. (Thanks to Tobias C. Rittweiler)
1245 * optimization: bignum printing speed has been improved by 20-40%
1246 (depending on the bignum size.)
1247 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1249 * bug fix: the cache used by the CLOS to store precomputed effective
1250 methods, slot offsets, and constant return values is now thread and
1252 * bug fix: generic function dispatch function updating is now thread
1253 and interrupt safe (in the sense that the known issues have been
1255 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1256 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1257 * bug fix: asdf systems with dependencies to the SB-POSIX or
1258 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1259 * bug fix: interrupt safety of applicable method computation has been
1262 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1263 * new contrib: sb-cover, an experimental code coverage tool, is included
1264 as a contrib module.
1265 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1266 significantly faster.
1267 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1268 produce more efficient code on x86-64 if the compiler can determine
1269 that (+ INDEX <constant>) does not require a bounds check and FOO
1270 has an element type at least 8 bits wide.
1271 * enhancement: a new, experimental synchronous timeout facility is
1272 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1273 * enhancement: when a symbol name conflict error arises, the
1274 conflicting symbols are always printed with a package prefix.
1275 (thanks to Kevin Reid)
1276 * enhancement: stepping is now once again supported on the SPARC and
1277 MIPS platforms. (It is also now more likely to work on CheneyGC
1279 * enhancement: sb-sprof can now also track and report accurate call
1281 * bug fixes: the treatment of non-standard subclasses of
1282 SB-MOP:SPECIALIZER is more correct.
1283 * incompatible change: PURIFY no longer copies the data from the
1284 dynamic space into the static and read-only spaces on platforms
1285 that use the generational garbage collector
1286 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1288 * bug fix: GC race condition occasionally resulting in crashes with
1289 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1291 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1293 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1294 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1295 * bug fix: an asynchronous interrupt could previously leave the
1296 system running with GC inhibited.
1297 * bug fix: a DECLARE form evaluated at top-level now causes an error
1298 rather than silently (or verbosely) returning NIL.
1299 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1300 result in a error being signalled due to source form lookup errors.
1301 (reported by Peter Graves)
1303 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1304 * incompatible change: removed writer methods for host-ent-name,
1305 host-ent-addresses -- changing the values did not update the DNS
1307 * minor incompatible change: changed experimental JOIN-THREAD interface
1308 * documentation: the manual now lists reader and writer methods
1309 in class slot documentation sections. (thanks to Richard M Kreuter)
1310 * documentation: unwinding from asyncronous events has been
1311 documented as unsafe.
1312 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1313 in multithreaded application code.
1314 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1315 platforms. (thanks to James Anderson for the optimization hint)
1316 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1318 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1319 variants no longer cons.
1320 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1321 their NOT- variants no longer cons.
1322 * optimization: EQUAL hash tables no longer use SXHASH for objects
1323 of all data types, but instead use an EQL hash for types for which
1324 EQUAL is the same as EQL.
1325 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1326 are significantly faster.
1327 * optimization: new STRING-OUTPUT-STREAM implementation is much
1328 faster for large outputs and conses 30% less on average.
1329 * enhancement: XREF information is now collected for references made
1330 to global variables using SYMBOL-VALUE and a constant argument.
1331 * enhancement: SIGINT now causes a specific condition
1332 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1333 * bug fix: FILE-POSITION used to signal an error in some cases where
1334 ANSI requires it to return NIL.
1335 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1336 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1337 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1339 * bug fix: bad type declaration in the CLOS implementation has
1340 been fixed. (reported by James Anderson)
1341 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1342 (thanks to Lutz Euler)
1343 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1344 required by the CLHS. (reported by Samium Gromoff)
1345 * bug fix: dead unbound variable references now signal an error.
1346 (reported by Marco Monteiro)
1347 * bug fix: / with an unused value was being deleted in safe code.
1348 (thanks to Marco Monteiro and Kevin Reid)
1349 * bug fix: number of characters that can be written onto a single
1350 line in a file is unlimited.
1351 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1352 been fixed by inhibiting interrupts for when GC is disabled.
1353 * bug fix: some interrupt safety issues with GETHASH, (SETF
1354 GETHASH), CLRHASH and REMHASH have been fixed.
1355 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1356 specifier no longer causes infinite recursion.
1357 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1358 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1359 * bug fix: an &environment argument with the correct variable information
1360 is passed to macros that are expanded during byte compilation.
1361 (reported by Samium Gromoff)
1362 * bug fix: a logic error was causing the hash function for bignums to
1363 have excessive amounts of collisions. (reported by Faré Rideau)
1364 * bug fix: modifying the contents of an array could change the return
1365 value of SXHASH on that array, which is only allowed for strings
1366 and bit vectors. (bug introduced in 0.9.16)
1367 * improvement: the x86-64/darwin port now passes all tests (except
1368 for the debugger tests) but should still be considered
1369 experimental until this is fixed.
1370 * improvement: a style-warning is signaled for CASE (etc) clauses with
1371 duplicate keys. (thanks to Kevin Reid)
1372 * improvement: macos/x86 and macos/x86-64 now use mach exception
1373 handlers for dealing with illegal instructions (for trapping and
1374 error handling) and memory protection violations (for GC).
1376 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1377 * new platform: experimental support for x86-64/darwin (MacOS).
1378 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1379 and getnameinfo sockets functions are used instead of gethostbyaddr
1380 and gethostbyname, on platforms where the newer functions are available.
1381 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1383 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1384 don't print the startup banner, but behave as if --noinform was passed
1385 as a command line argument. (thanks to Kevin Reid)
1386 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1387 * optimization: code using alien values with undeclared types is much faster.
1388 * optimization: the compiler is now able to open code SEARCH in more cases.
1389 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1390 * bug fix: using standardized COMMON-LISP special variables as loop
1391 variables no longer signals bogus package lock violations. (reported
1393 * bug fix: declaring local loop variables to be of a range-limited type
1394 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1395 (reported by Andras Simon)
1396 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1397 bugs remain on x86-64.)
1398 * bug fix: the #= and ## reader macros now interact reasonably with
1399 funcallable instances.
1400 * bug fix: type-checks for function arguments were compiled using the
1401 compiler policy settings of the wrong lexical environment (in 1.0.2
1403 * bug fix: SHADOW accepts characters as string designators, as required
1404 by the spec (thanks to Eric Marsden)
1405 * bug fix: fixed GC safety issues when foreign functions are called with
1406 non-base strings as arguments
1407 * bug fix: more consistent error output for fatal-compiler-warnings, like
1409 * bug fix: functions with proper names were showing up as NIL in
1410 backtraces (reported by Edi Weitz, regression in 1.0.2)
1412 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1413 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1414 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1415 produce more efficient code on the x86 if the compiler can determine
1416 that (+ INDEX <constant>) does not require a bounds check and FOO
1417 has an element type at least 8 bits wide.
1418 * bug fix: references to undefined variables are handled the same way
1419 in toplevel forms as in the normal compiler
1420 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1422 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1423 (thanks to Jon Buller)
1424 * improvement: faster compilation times for complex functions
1425 * improvement: added readlink support to SB-POSIX (thanks to Richard
1428 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1429 * improvement: experimental support for mach exception handling on
1430 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1432 * improvement: support for GBK external format.
1433 (thanks to Chun Tian (binghe))
1434 * improvement: the debugger now displays variables that have been closed
1435 over, in code compiled with (DEBUG 2) or higher
1436 * improvement: support for executable cores on NetBSD (thanks to
1438 * new feature: added a RESTART-FRAME debugger command
1439 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1440 be used to provide an implementation for FILE-POSITION on Gray streams
1441 (thanks to Eric Marsden)
1442 * new feature: add syslog, openlog and closelog support to SB-POSIX
1443 (thanks to Richard Kreuter)
1444 * optimization: the function call overhead in code compiled with
1445 a high DEBUG optimization setting is significantly
1446 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1447 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1448 (thanks to Tony Martinez)
1449 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1450 evaluated once (reported by Kevin Reid)
1451 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1452 works again (thanks to Kilian Sprotte)
1453 * bug fix: an error is signaled for tagbodies with duplicate tags
1454 (thanks to Stephen Wilson)
1455 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1456 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1457 stack frames from alien callbacks.
1458 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1459 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1460 65k pages (thanks to David Woodhouse)
1461 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1463 changes in sbcl-1.0.1 relative to sbcl-1.0:
1464 * new platform: FreeBSD/x86-64, including support for threading.
1465 * new feature: the compiler stores cross-referencing information
1466 about function calls (who-calls), macroexpansion (who-macroexpands)
1467 and special variables (who-binds, who-sets, who-references) for code
1468 compiled with (< SPACE 3). This information is available through the
1469 sb-introspect contrib.
1470 * new feature: users may subclass SEQUENCE, and have instances of
1471 these classes interoperate with standard Common Lisp functions if
1472 a number of methods are defined. (This feature is experimental
1473 and the interface subject to change based on feedback from SBCL
1474 users and the general community)
1475 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1476 x86/x86-64, rather than the previous fixed depth of 8
1477 * improvement: another pthread back-end of mutex "pthread-futex".
1478 * bug fix: non-ascii command-line arguments are processed correctly
1479 (thanks to Yaroslav Kavenchuk)
1480 * bug fix: non-required arguments were not passed correctly when a method
1481 defined using DEFMETHOD was called from a mop-generated method using
1482 CALL-NEXT-METHOD (reported by Pascal Costanza)
1483 * bug fix: recursion is now permitted in accessors through
1484 SLOT-UNBOUND. (reported by Pascal Costanza)
1485 * bug fix: an error was signaled at startup if the HOME environment
1486 variable was defined, but had an empty value (reported by Peter Van Eynde)
1487 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1488 signal a PROGRAM-ERROR, not a BUG.
1489 * bug fix: SB-POSIX:READDIR works when built with large file support.
1490 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1492 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1493 for better automatic indentation support. (thanks to Matt Pillsbury)
1494 * optimization: loading generic functions no longer takes O(n^2) time,
1495 proportional to the amount of methods in the generic function
1496 (reported by Todd Sabin and Jeremy Brown)
1497 * optimization: the FIND and POSITION family of sequence functions
1498 are significantly faster on arrays whose element types have been
1500 * improvements to the Windows port:
1501 ** Intermittent heap corruption problems have been fixed. (thanks
1502 to Alastair Bridgewater)
1503 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1505 ** Lisp is able to unwind foreign exception frames from alien
1506 callbacks. (thanks to Alastair Bridgewater)
1508 changes in sbcl-1.0 relative to sbcl-0.9.18:
1509 * improvement: experimental support for threading on FreeBSD/x86.
1510 (thanks to NIIMI Satoshi)
1511 * improvement: runtime option --dynamic-space-size can be used
1512 to set the size of the dynamic space reserved on startup.
1513 * improvement: floating point modes in effect are now saved in
1514 core, and restored on startup.
1515 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1516 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1517 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1518 threads are not running after *SAVE-HOOKS* have run.
1519 * improvement: writes to CLOS instance slots are type-checked in code
1520 compiled with (SAFETY 3)
1521 * improvement: floating-point exception handling on FreeBSD (thanks to
1523 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1524 (thanks to Zach Beane)
1525 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1527 * improvement: added support for the Shift-JIS external format.
1528 (contributed by NIIMI Satoshi)
1529 * improvement: callbacks are supported on Linux/PPC. (thanks to
1531 * bug fix: compiler bug triggered by a (non-standard) VALUES
1532 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1533 * bug fix: file compiler no longer confuses validated and already
1534 dumped structurres. (reported by Kaersten Poeck)
1535 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1536 fill-pointer signals a type-error as required. (thanks to
1538 * bug fix: disassemly of funcallable instances works.
1539 * bug fix: single stepping on PPC.
1540 * bug fix: fix thread-safety problems in the type system (generally
1541 manifesting as nonsensical errors like "STRING is a bad type specifier
1542 for sequences" or "The value 1 is not of type FIXNUM")
1543 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1544 (reported by Josip Gracin)
1545 * bug fix: an error is signaled for attempts to displace arrays with
1546 incompatible element types (thanks to Mario Mommer)
1547 * bug fix: more correct handling of wide characters in debug info
1548 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1549 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1550 and don't cause extra consing
1551 * optimization: MAP and MAP-INTO are significantly faster on vectors
1552 whose elements types have been declared.
1553 * Improvements to SB-SPROF:
1554 ** Support for allocation profiling
1555 ** Reduced profiling overhead, especially for long profiling runs
1556 * Improvements to the Windows port:
1557 ** floating point exceptions are now reported correctly.
1558 ** stack exhaustion detection works partially.
1559 ** more accurate GET-INTERNAL-REAL-TIME.
1560 ** better RUN-PROGRAM behaviour in case of errors in the child
1562 ** PROBE-FILE now simplifies pathnames correctly.
1563 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1564 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1565 1st 1970 (although time timezone data will be unreliable).
1566 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1568 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1569 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1570 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1572 * bug fix: two potential GC deadlocks affecting threaded builds.
1573 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1574 returns T (reported by Anton Kazennikov)
1575 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1576 with non-variable places
1577 * bug fix: remove a race condition in the setting of
1578 funcallable-instance functions, this should make threaded CLOS
1579 code more stable against memory faults.
1580 * bug fix: corruption of specials when unbinding is interrupted by an
1581 asynchronous unwind (reported by Hannu Koivisto)
1582 * improvement: the debugger will now also display local variables that
1583 are only used once, for code compiled with a DEBUG optimization quality
1586 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1587 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1588 * incompatible change: External-format support for FFI calls. The
1589 SB-ALIEN:C-STRING no longer implies an ASCII
1590 external-format. Instead the string is subject to external-format
1591 conversion. Additionally return values of type SB-ALIEN:C-STRING
1592 are by default of type (SIMPLE-ARRAY CHARACTER), not
1593 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1594 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1595 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1596 * incompatible change: SB-EXT package no longer contains the
1597 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1598 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1600 * incompatible change: the single-stepper is no longer available
1601 on Alpha, Mips and Sparc platforms.
1602 * minor incompatible change: the direct superclasses of
1603 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1604 not (STANDARD-OBJECT FUNCTION). This makes the
1605 class-precedence-lists of GENERIC-FUNCTION and
1606 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1608 * minor incompatible change: the default stream external format on
1609 non-unicode SBCL is no longer detected from the locale, but is always
1611 * new feature: Add a version of evaluator that uses an interpreter instead
1612 of the compiler. EVAL still uses the compiler by default, to switch it
1613 to use the interpreter, set the value of the variable
1614 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1615 * minor incompatible change: the single-stepper REPL has been merged
1616 with the normal debugger (see the "Stepping" heading of the debugger help
1617 for more details). The debugger command STEP will no longer switch
1618 to the single-stepper REPL.
1619 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1620 for a type now works.
1621 * bug fix: loading of default sysinit file works. (thanks to Leonid
1623 * bug fix: better detection of circularities in the file-compiler.
1624 (reported by Marco Monteiro)
1625 * bug fix: the CL pathname functions now work with files that have
1626 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1627 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1628 systems with Unix98 pty semantics.
1629 * bug fix: ASDF-INSTALL will now work with bsd tar.
1630 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1632 * bug fix: timers expiring in dead threads no longer cause a
1633 type-error (reported by Paul "Nonny Mouse").
1634 * bug fix: thanks to more lightweight single-stepper instrumentation,
1635 code compiled with (DEBUG 3) will compile and execute significantly faster,
1636 and will have more accurate type-inferencing than before
1637 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1638 whose bindings are modified
1639 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1640 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1641 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1642 CL:SOFTWARE-VERSION with proper version
1644 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1645 * feature: implemented the READER-METHOD-CLASS and
1646 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1647 as specified by AMOP.
1648 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1650 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1651 (thanks to Lutz Euler)
1652 * optimization: hashing of general arrays and vectors has been
1653 improved. (reported by Any Fingerhut)
1654 * enhancement: SB-INTROSPECT is now able to find definitions of
1655 profiled functions. (thanks to Troels Henriksen)
1656 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1657 as well, allowing compiler-macros for SETF-functions to expand.
1658 * enhancement: step-instrumentation no longer wraps known
1659 single-value functions with multiple-value context, allowing
1660 better type inference.
1661 * fixed bug #337: use of MAKE-METHOD in method combination now works
1662 even in the presence of user-defined method classes. (reported by
1663 Bruno Haible and Pascal Costanza)
1664 * fixed bug #339(c): if there are applicable methods not part of any
1665 long-form method-combination group, call INVALID-METHOD-ERROR.
1666 (reported by Bruno Haible)
1667 * fixed bug #361: the :FUNCTION initarg in the protocol for
1668 initialization of methods can now be used to override
1669 internally-produced optimized functions. (reported by Bruno
1671 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1672 system-provided lambda expression no longer cause warnings about
1673 unbound #:|pv-table| symbols.
1674 * bug fix: improved the handling of type declarations and the
1675 detection of violations for keyword arguments with non-constant
1677 * bug fix: potentially erronous calls to PATHNAME and
1678 MERGE-PATHNAMES were being flushed in some cases.
1679 (reported by Richard Kreuter)
1680 * bug fix: compiled calls to TYPEP were mishandling obsolete
1681 instances. (reported by James Bielman and Attila Lendvai)
1682 * bug fix: format strings with ~> without matching ~< no longer
1683 trigger an AVER, but signal an understandable error instead.
1684 (reported by Antonio Martinez)
1685 * bug fix: specifying an output-file without a pathname-type for
1686 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1687 of input-file instead of "fasl". (reported by Robert Dodier)
1688 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1689 (reported by James Y Knight).
1690 * bug fix: compiler-macros-function did not consider the environment
1691 argument for shadowing by local functions.
1692 * bug fix: compiler-macros expansion was inhibited by local INLINE
1694 * bug fix: inline expansions of known functions were subject to
1695 step-instrumentation in high debug policies, leading to problems
1696 with type-inference.
1697 * bug fix: compiler failed to differentiate between different CONS
1698 types in some cases.
1699 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1700 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1701 * bug fix: #368: incorrect use of expressed vs. upgraded array
1703 * bug fix: #306a: more precise unions of array types.
1704 * thread-safety improvements:
1705 ** CONDITION-WAIT could return early on Linux, if the thread was
1706 interrupted and subsequently continued with SIGCONT.
1707 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1709 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1710 * added support for the ucs-2 external format. (contributed by Ivan
1712 * minor incompatible change: pretty printing of objects of type
1713 (cons symbol) is, in the default pprint-dispatch-table, now
1714 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1716 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1717 called later in a class's lifetime, possibly as late as when the
1718 first instance of the class is created. Previously,
1719 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1720 class became finalizeable.
1721 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1722 for multibyte external-format streams. (thanks to "vbzoli")
1723 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1724 with :ALLOCATION :CLASS inherited from superclasses of the
1726 * fixed bug: anonymous classes can now be created using the :NAME
1727 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1728 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1729 * fixed bug: core-files saved with :EXECUTABLE T can again be
1730 executed when SBCL_HOME isn't set. (reported by James Knight)
1731 * fixed bug: toplevel LOCALLY forms with declarations could
1732 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1733 * fixed bug: printing from several different threads using different
1734 values of *print-case* could cause invalid output, due to
1735 some internal special variables of the printer not being bound
1736 thread-locally (reported by Max Mikhanosha)
1737 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1738 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1739 (reported by Pascal Costanza)
1740 * fixed bug: FINALIZE-INHERITANCE is called from
1741 REINITIALIZE-INSTANCE on classes when the class has previously
1742 been finalized, as required by AMOP.
1743 * minor code generation optimizations:
1744 ** better register allocation in CLOS dispatching functions
1745 ** overflow detection when coercing signed bytes to fixnums on x86-64
1746 ** is now implemented with one IMUL instruction instead of three shifts
1747 ** more efficient bit-vector access on x86 and x86-64
1748 ** more efficient access to raw structure slots on x86 and x86-64
1749 * fixed some bugs revealed by Paul Dietz' test suite:
1750 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1751 return its argument.
1753 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1754 * feature: thread support on Solaris/x86, and experimental thread support
1756 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1758 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1759 default method for SLOT-UNBOUND.
1760 * minor incompatible change: prevent the user from specializing the
1761 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1762 somewhat counter to the intent of the protocol, I (CSR) think, and
1763 additionally it just doesn't work in SBCL as currently
1764 implemented, thanks to optimizations (that are always valid for
1765 the other three SLOT-VALUEish functions, but not for the setter).
1766 * minor incompatible change: the :SB-LDB feature is now enabled by
1767 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1768 the low-level debugger.
1769 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1770 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1771 down to an SB-SYS:FD-STREAM, allowing direct communication in
1772 more cases. Temporary files and pipes are still used as a fallback
1774 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1775 on the non-reentrant C functions localtime(3) and gmtime(3).
1776 * bug fix: global optimization policy was not visible in LOCALLY and
1778 * bug fix: class objects can be used as specializers in methods.
1779 (reported by Pascal Costanza)
1780 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1781 with a type error. (reported by blitz_ on #lisp)
1782 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1783 failed with a type error. (reported by Pascal Bourguignon)
1784 * bug fix: merging pathnames against defaults with :DIRECTORY
1785 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1786 (reported by James Y Knight)
1787 * bug fix: saving large (>2GB) cores on x86-64 now works
1788 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1789 constant index and a (simple-array (signed-byte 32)) array
1790 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1791 error (patch by Robert J. Macomber)
1792 * feature: TIME now displays the amount of run-time spent in GC
1793 * bug fix: The debugger now does a better job of respecting
1794 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1795 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1796 workaround for bug 403.)
1797 * bug fix: floating point exception handling now works on FreeBSD
1798 (thanks to NIIMI Satoshi)
1799 * fixed some bugs revealed by Paul Dietz' test suite:
1800 ** MISC.641: LET-conversion were not supposed to work in late
1802 * improvements to the Win32/x86 port:
1803 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1804 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1806 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1807 * new feature: source path information is generated for macro-expansion
1808 errors for use in IDE's like Slime (thanks to Helmut Eller)
1809 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1810 * bug fix: compiler does not loop forever on an invalid type in
1812 * improvement: compilation of most CLOS applications is significantly
1814 * optimization: added a limited bytecode compiler for simple toplevel
1815 forms, speeding up compilation and FASL loading
1816 * bug fix: the statistical profiler now properly distinguishes anonymous
1819 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1820 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1821 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1822 into subclasses of the finalized class. Now user calls to
1823 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1824 system return before any subclasses are finalized.
1825 * minor incompatible change: The reader no longer ignores errors
1826 regarding non-existent packages in #+ and #- feature tests.
1827 * new feature: command line options --no-sysinit, --no-userinit to
1828 inhibit loading the corresponding init files
1829 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1830 for sending data through UDP sockets (thanks to François-René Rideau)
1831 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1832 error is signalled instead (thanks to François-René Rideau)
1833 * minor incompatible change: Error signalling behaviour of lexical
1834 operations violating package locks has changed slightly. Refer to
1835 documentation on package locks for details.
1836 * enhancement: EVAL can process IF-expressions without resorting to the
1838 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1839 constant-folded properly due to missing out-of-line functions.
1840 (reported by Mika Pihlajamäki)
1841 * bug fix: LISTEN sometimes returned T even in cases where no data was
1842 immediately available from the stream
1843 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1844 were reversed. (reported by Levente Mészáros)
1845 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1846 when given a vector displaced to an adjustable array. (reported
1848 * bug fix: derivation of float boundaries from numbers outside the
1849 appropriate float range (reported by John Wiseman)
1850 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1852 * bug fix: precomputing cache entries for generic functions with
1853 some subclasses of specializers as yet invalid does not attempt to
1854 fill a cache line with a negative offset. (reported by Levente
1856 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1857 allow condition class objects as arguments to DOCUMENTATION and
1858 (SETF DOCUMENTATION); only find and set documentation for
1859 structure names for the STRUCTURE doc-type. (suggested by Gary
1861 * improvements to the Win32/x86 port:
1862 ** (user-homedir-pathname) and default initialization file
1863 locations now know about the user's "Documents and Settings"
1864 directory (thanks to Yaroslav Kavenchuk)
1865 ** run-program is implemented (thanks to Mike Thomas)
1866 ** sockets support (thanks to Timothy Ritchey)
1867 ** better backtrace support (thanks to Alastair Bridgewater)
1868 ** sb-grovel supported
1869 ** asdf-install and sb-posix work somewhat
1870 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1871 * improvements to the Solaris/x86 port:
1872 ** works on Solaris 11/Solaris Express
1873 ** floating-point exception handling support
1874 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1875 * fixed some bugs revealed by Paul Dietz' test suite:
1876 ** REMOVE-METHOD returns its generic function argument even when
1877 the method is not one of the generic functions' methods.
1878 ** objects declared as MEMBER types can be admissible arguments to
1879 structure accessors.
1880 ** printing characters should simply be printed by the FORMAT ~:C
1882 ** compiler failure when compiling functions with hairy constant
1883 defaults for optional parameters.
1884 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1885 function, which is already optimized.
1887 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1888 * new platform: experimental support for SBCL x86/Darwin, including
1889 MacOS X 10.4.5 on Intel.
1890 * new feature: Unicode character names are now known to the system
1891 (through CHAR-NAME and NAME-CHAR).
1892 * new feature: the filesystem location of SBCL's core file is
1893 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1894 * minor incompatible change: the contrib modules SB-POSIX and
1895 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1896 this change is to make it easier to distribute
1897 location-independent binaries.
1898 * bug fix: as implied by AMOP, standardized classes no longer have
1899 slots named by external symbols of public packages. (reported by
1901 * optimization: calling functions via constant symbols -- as in
1902 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1903 via the function object as in (FUNCALL #'FOO).
1904 * optimization: on x86 and x86-64, the calling convention for the
1905 case of dealing with an unknown number of values has been altered
1906 to be friendlier to the prediction heuristics implemented,
1907 particularly with reference to CALL and RET pairing. (thanks to
1908 Alastair Bridgewater)
1909 * optimization: on x86, the code for access to thread-local symbol
1910 values and binding/unbinding of thread-local symbols is smaller.
1911 (thanks to Alastair Bridgewater)
1912 * enhancement: CONSTANTP is now able to determine constantness of
1913 more complex forms, including calls to constant-foldable standardized
1914 functions and some special forms beyond QUOTE.
1915 * fixed bug: occasional GC crashes on Solaris/x86
1916 * optimization: x86-64 supports stack allocation of results of simple
1917 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1918 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1919 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1920 (thanks to James Knight)
1921 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1922 by the standard (thanks to Stephen Compall)
1924 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1925 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1926 be used for bundling the runtime and the core file into one
1927 executable binary. This feature is not currently supported on all SBCL
1928 platforms. (thanks to James Bielman and NIIMI Satoshi)
1929 * new feature: a generational or ephemeral garbage collector is now
1930 the default on the PowerPC platform (both Linux and Darwin). The
1931 old Cheney (stop and copy) collector is a build-time option.
1932 (thanks to Cyrus Harmon, after Raymond Toy)
1933 * minor incompatible change: the method by which SBCL finds its
1934 contributed modules has changed; it no longer relies on symbolic
1935 links from an $SBCL_HOME/systems directory, but searches directly
1936 in the subdirectories of $SBCL_HOME.
1937 * enhancement: the dynamic heap size on the Linux/PPC platform is
1938 markedly larger, even using the older Cheney garbage collector.
1939 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1940 certain complicated string types. (reported by Gary King)
1941 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1942 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1943 * fixed bug: DOCUMENTATION on structures no longer signals an
1944 error if no structure type of the right name exists. (reported by
1946 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1947 applicable non-standard primary or :AROUND method on
1948 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1949 no longer cause unbound variable errors. (reported by Kevin Reid)
1950 * fixed bug: metacircle resolution in cases where methods have slots
1951 added before the slots from STANDARD-METHOD. (reported by Jean
1953 * fixed bug: the Power PC assembly code for calling into lisp
1954 sometimes computed its return address wrongly (depending on the
1955 15th bit of the address, fixed at link time). This used to
1956 manifest itself in a segmentation violation while building PCL.
1957 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1958 many others over the years)
1959 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1960 the stack pointer (treated as a signed integer) is negative.
1961 (thanks to Peter van Eynde)
1963 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1964 * new platform: experimental support for the Windows operating
1965 system has been added. (thanks to Alastair Bridgewater)
1966 * fixed several bugs in and robustified the PPC FFI (including
1967 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1968 * bug fix: allow non-simple string symbol names (reported by Paul
1970 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1972 * bug fix: saving a core corrupted callbacks on x86/x86-64
1973 * bug fix: closed a loophole in metacircularity detection and
1974 grounding in the PCL implementation of CLOS.
1975 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1976 (reported by tomppa on #lisp)
1977 * bug fix: clear the direction flag on Lisp -> C transitions, as
1978 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1979 (reported by Andrej Grozin and Hendrik Maryns)
1980 * optimization: major improvements to GC efficiency on GENCGC platforms
1981 * optimization: faster implementation of EQUAL
1982 * optimization: emit more efficient opcodes for some common
1983 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1984 * optimization: several other minor code-generation improvements on x86-64
1985 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1987 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1988 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1989 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1990 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1991 by ANSI as a generic function, and for consistency (SETF
1992 GENERIC-FUNCTION-NAME) is treated likewise.
1993 * fixed bug #233.b: make constraint propagation notice when a variable
1994 value is changed after it is referenced but before it is used
1995 * fixed bug #296: no more arbitrary behaviour from filenames with
1996 odd characters as --load arguments. (reported by Adam Warner)
1997 * fixed bug #390: :CHARACTER-SET pathname components now work as
1998 expected. (reported by Tim Daly Jr)
1999 * fixed bug #391: complicated :TYPE intersections in slot
2000 definitions no longer cause an error in PCL internals.
2001 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2002 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2003 returning the number of octets which would be written to the
2004 file-stream. (thanks to Robert J. Macomber)
2005 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2006 arguments to the internal stream functions. (thanks to David
2008 * bug fix: stack exhaustion is now handled on the x86/SunOS
2009 platform. (thanks to Daisuke Homma)
2010 * bug fix: more accurate ROOM results on GENCGC platforms
2011 * optimization: improved type inference for arithmetic-for
2012 index variables in LOOP
2013 * optimization: faster floating-point SQRT on x86-64
2014 * fixed some bugs revealed by Paul Dietz' test suite:
2015 ** DOCUMENTATION returns NIL instead of "" for method combinations
2016 that don't have a docstring
2018 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2019 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2020 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2021 therefore are not customizeable by user code (as seems to be at
2022 least permitted and maybe required by AMOP). As a consolation,
2023 however, the SBCL implementation of these functions now calls
2024 REINITIALIZE-INSTANCE as specified by AMOP.
2025 * bug fix: slot-definition documentation is propagated as per ANSI
2026 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2027 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2028 argument, as do eslotd initialization methods. (from Pascal
2029 Costanza's "Closer" project)
2030 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2031 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2033 * bug fix: it is now possible to have more than one subclass of
2034 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2035 (reported by Bruno Haible, Pascal Costanza and others)
2036 * bug fix: the dependent update protocol now works for generic
2037 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2038 and Pascal Costanza)
2039 * bug fix: condition-class instances corresponding to
2040 DEFINE-CONDITION forms are now created eagerly. (reported by
2041 Kalle Olavi Niemitalo on comp.lang.lisp)
2042 * bug fix: floating point printing is more accurate in some
2043 circumstances. (thanks to Simon Alexander)
2044 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2045 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2046 * bug fix: callbacks on OS X now preserve stack-alignment.
2047 (thanks to Cyrus Harmon)
2048 * enhancement: the x86-64 disassembler is much better at
2049 disassembling SSE instructions. (thanks to Lutz Euler)
2050 * enhancement: CHECK-TYPE on a variable now allows type-inference
2051 (thanks to Vincent Arkesteijn)
2052 * optimization: improved performance of EUC-JP external format.
2053 (thanks to NIIMI Satoshi)
2054 * optimization: performance improvements to IO on file streams of
2055 :ELEMENT-TYPE CHARACTER
2056 * optimization: much faster memory allocation on x86-64
2057 * optimization: faster garbage collections (latency and throughput)
2059 * optimization: faster bignum subtraction and division on x86 and x86-64
2060 (thanks to Lutz Euler)
2061 * optimization: more accurate type-inference for loops that use a
2062 floating point index variable or a negative step.
2064 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2065 * bug fix: add a workaround to SBCL looping infinitely at startup on
2066 Linux kernels with apparently buggy implementations of personality().
2067 (thanks to Svein Ove Aas)
2068 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2069 (thanks to David Lichteblau)
2070 * bug fix: local bindings shadow global symbol macros for
2071 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2072 * optimization: non-open coded uses of numeric comparison operators
2073 (e.g. >) no longer cons when called with more than one parameter
2074 on platforms supporting dynamic-extent allocation.
2075 * enhancement: saving cores with foreign code loaded is now supported
2076 on MIPS/Linux in addition to the previously supported platforms.
2077 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2078 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2079 * bug fix: division by zero in sb-sprof when no samples were collected
2080 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2081 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2082 (thanks to Alexander Kjeldaas)
2083 * new feature: ignoring the return values of destructive functions
2084 like NREVERSE signals a compile-time style-warning.
2085 (thanks to Kevin Reid)
2086 * new feature: the alignment of alien structure fields can be
2087 explicitly specified. (thanks to Cyrus Harmon)
2088 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2089 and dump core on SIGQUIT
2091 ** incompatible change: threads do not inherit values of specials
2092 from their parents (see manual)
2093 ** bug fix: threads stacks belonging to dead threads are freed by the
2094 next exiting thread, no need to gc to collect thread stacks anymore
2095 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2096 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2097 ** bug fix: dynamic variable and thread start related gc lossage
2098 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2100 * fixed some bugs revealed by Paul Dietz' test suite:
2101 ** SUBTYPEP is slightly more accurate on heinously complicated
2102 CONS types where some of the members have uncertain (in the
2103 NIL, NIL sense) type relationships to each other.
2105 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2106 no longer purified unless :PURIFY T is explicitly specified.
2107 ** Non-purified cores are significantly smaller than before
2109 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2110 * new feature: timers based on Zach Beane's excellent timer package
2111 * added support for the following external formats: koi8-u,
2112 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2113 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2114 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2115 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2116 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2117 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2118 * incompatible change: a threaded SBCL will no longer revert to
2119 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2120 * bug fix: interrupts are disabled until startup is complete; no
2121 more sigsegvs when receiving a signal to soon
2122 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2124 * bug fix: add a workaround for the memory randomization features in
2125 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2126 workaround will only be in effect on systems with the proc filesystem
2128 * bug fix: printing objects of type HASH-TABLE signals a
2129 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2131 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2132 have been running for over 50 days. (reported by Gilbert Baumann)
2133 * bug fix: the logic for getting names of functions gets less
2134 confused when confronded with alternate-metaclass
2135 funcallable-instances. (reported by Cyrus Harmon)
2136 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2137 consistent, even on internal alternate-metaclass objects.
2138 * bug fix: flush closure information collected by physical
2139 environment analysis prepass before the main pass. (bug reported
2141 * bug fix: compiler pack phase does not modify a hashtable, which is
2142 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2143 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2144 may be expanded. (reported by Alexander <malishev> on c.l.l)
2145 * bug fix: no more style-warnings when compiling code using LAST
2146 under high-SPEED low-SPACE settings. (reported by David Wallin
2148 * fixed some incompatibilities between SBCL's MOP and the MOP
2150 ** the METAOBJECT class is now implemented;
2151 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2152 STANDARD-OBJECT, as required;
2153 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2154 now compatible (as required by VALIDATE-SUPERCLASS); there
2155 remains a consistency requirement over the presence or absence
2156 of the FUNCTION class in the superclass list of finalized
2157 classes; see the manual for more details;
2158 ** the :AROUND method for COMPUTE-SLOTS on
2159 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2160 requested slot ordering.
2162 ** bug fix: parent thread now can be gc'ed even with a live
2164 ** bug fix: binding a special with PROGV to no value is not
2165 the same as that symbol not having been bound (thanks to
2167 ** bug fix: binding specials is thread safe (thanks to
2169 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2170 and SB-SPROF do not die with 'no handler for signal XX in
2171 interrupt_handle_now(..)' anymore
2172 ** bug fix: WITH-TIMEOUT works with multiple running threads
2173 * fixed some bugs revealed by Paul Dietz' test suite:
2174 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2175 the :method-class keyword argument.
2177 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2178 * new port: the Solaris operating system on x86 processors is now
2179 mostly supported, though some rough edges in the environment
2180 remain. (thanks to Daisuke Homma)
2181 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2182 space for its heap. (thanks to Thiemo Seufer)
2183 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2184 closures. (thanks to Thiemo Seufer)
2185 * minor incompatible change: eof selects abort in the debugger.
2186 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2187 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2189 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2190 deprecated, and will go away in a future revision of SBCL.
2191 * minor incompatible change: GC-ON and GC-OFF are no longer
2192 implemented with a counter, it does not matter how many times gc
2193 is switched on or off
2194 * bug fix: discriminating functions for generic function classes
2195 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2196 make invalid assumptions about method precedence order. (reported
2198 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2199 platforms. (thanks to Thiemo Seufer)
2200 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2201 * bug fix: correct pathname printing with printer escaping is on.
2202 (thanks to Kevin Reid)
2203 * bug fix: complex VOP definitions in "user-space" no longer trigger
2204 package locks. (reported by Zach Beane)
2205 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2206 for funcallable-instance functions, and is no different from
2208 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2209 characters in the current readtable. (reported by Nicholas Neuss)
2210 * bug fix: SUBTYPEP on various CONS types returns more a more
2211 accurate acknowledgment of its certainty.
2212 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2213 lists in some cases. This partially fixes bug 384.
2214 * flush all standard streams before prompting in the REPL and the
2216 * bug fix: signal handling and triggering gc do not conflict
2217 directly anymore, in particular a high frequency sb-sprof does
2218 not prevent gc from running
2219 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2220 approximation for timezone and DST information between the
2221 universal time epoch and the smallest negative 32-bit time_t.
2222 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2223 year 1899 so long as the encoded time is non-negative.
2224 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2225 the correct answer for non-constant rotate amounts when performing
2226 an inline 32-bit rotation.
2228 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2229 there is only one thread in the session
2230 ** bug fix: memory leak for streams created in one thread and
2231 written to in another
2232 ** bug fix: lockup when compiled with gcc4
2233 ** bug fix: race that allows the gc to be triggered when gc is
2235 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2236 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2238 ** bug fix: finished threads are gc'ed properly
2239 * fixed some bugs revealed by Paul Dietz' test suite:
2240 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2241 has arguments with a different set of applicable methods from
2242 the orignal arguments.
2243 ** The type error thrown by MAP now has a correct expected-type
2245 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2246 name a compiled function.
2247 ** Three MISC tests where a large bignum was improperly coerced to
2248 a float that couldn't represent that bignum during type
2249 derivation were fixed.
2250 ** SUBTYPEP can now handle types involving the negation of a
2251 list-form FUNCTION type.
2252 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2253 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2254 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2256 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2257 * New feature: Experimental support for bivalent streams: streams
2258 opened with :element-type :default now allow character and binary
2259 (unsigned-byte 8) I/O
2260 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2261 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2263 * bug fix: no more highly sporadic "couldn't check whether ~S is
2264 readable" when reading a stream and an interrupt hits in the middle
2265 of a select system call
2266 * compiler better recognizes complex arrays (reported by Eduardo
2268 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2269 for variables on SBCL built with linkage-tables. (reported by Luis
2271 * various error reporting improvements.
2272 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2273 (Thanks to Thiemo Seufer)
2274 * bug fix: nested reader invokations work correctly
2275 * bug fix: it is possible to have simultaneous references to foreign
2276 code and foreign data with the same name.
2278 ** added x86-64 support
2279 ** incompatible change: the threading api now works with thread
2280 objects instead of thread ids
2281 ** bug fix: threads are protected from signals and interruption when
2282 starting up or going down
2283 ** bug fix: a race where an exiting thread could lose its stack to gc
2284 ** bug fix: don't halt on infinite error in threads if possible
2285 ** fixed numerous gc deadlocks introduced in the pthread merge
2286 ** bug fix: fixed thread safety issues in read and print
2287 ** bug fix: debugger doesn't hang on session lock if interrupted at
2288 an inappropriate moment
2289 ** bug fix: run-program is now thread safe(r)
2290 ** bug fix: inner with-recursive-lock no longer releases the mutex
2291 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2292 * fixed some bugs revealed by Paul Dietz' test suite:
2293 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2294 EXPECTED-TYPE slots filled.
2295 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2297 ** MAKE-CONDITION accepts classes as type-designators.
2298 ** COMPILE may never return NIL.
2299 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2300 range before calling Unix time functions
2302 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2303 * numerous signal handling fixes to increase stability
2304 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2305 * minor incompatible change: we now correctly canonize default
2306 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2307 as per the MOP, rather than the historical (INITARG INITFUNCTION
2308 INITFORM). (reported by Bruno Haible)
2309 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2310 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2311 for more information.
2312 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2313 pathname is a directory pathname.
2314 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2315 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2317 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2318 :METACLASS argument in addition to a class name. (reported by
2319 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2320 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2321 (reported by Bruno Haible; patch from Gerd Moellmann)
2322 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2324 * bug fix: more cleanups to the floating point exception handling on
2325 x86-64 (thanks to James Knight)
2326 * bug fix: the compiler does not try to constant fold calls of
2327 COERCE and BIT-* functions when they return freshly constructed
2328 objects. (reported by Nikodemus Siivola and Paul Dietz)
2329 * optimization: improved the MIPS versions of generic (in the
2330 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2331 * optimization: direct conversion of (unsigned-byte 32) to floats on
2332 the PowerPC platform.
2333 * optimization: structure instances with raw slots now use less
2334 memory, and probably show better memory locality. (thanks to
2336 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2337 are treated as requests for stack allocation on the x86-64,
2338 Alpha-32, PPC and SPARC platforms.
2339 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2340 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2341 (thanks to Tony Martinez)
2343 ** gcing a dead thread can no longer lead to lockups
2344 ** threads block signals until they are set up properly
2345 ** errno is no longer shared by threads
2346 ** interrupt-thread restores the eflags register on x86
2347 ** fixed some lockups due to gc/thread interaction
2348 * fixed some bugs revealed by Paul Dietz' test suite:
2349 ** invalid dotted lists no longer raise a read error when
2350 *READ-SUPPRESS* is T
2351 ** signal an error if a symbol that names a declaration is used
2352 as the name of a type, or vice versa
2353 ** allow using the (declare (typespec var*)) abbreviation for
2354 (declare (type typespec var*)) with all type specifiers
2355 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2356 ** always return NIL from PPRINT-POP when OBJECT is NIL
2357 ** don't signal errors when pretty-printing malformed LABELS,
2358 FLET or MACROLET forms
2359 ** declarations in a DOLIST body are also in scope for the
2361 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2363 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2366 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2367 * fixed cross-compiler leakages that prevented building a 32-bit
2368 target with a 64-bit host compiler.
2369 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2370 opened with :IF-EXISTS :OVERWRITE.
2371 * fixed bug 281: error for an invalid qualifier in a short-form method
2372 combination method is not signalled until the faulty method is called.
2373 * bug fix: iteration variable type inferrer failed to deal with open
2374 intervals. (reported by Alan Shields)
2375 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2376 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2377 or more runtime options were provided to the sbcl binary.
2378 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2379 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2380 * optimization: there's now a fast-path for fixnum arguments in the
2381 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2382 * optimization: the code generated on x86-64 is more compact thanks
2383 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2384 * bug fix: floating-point exception handling now partly works on
2385 x86-64. (Thanks to James Knight)
2386 * improvement to the MIPS backend from Thiemo Seufer: C-style
2387 64-bit long long arguments and return values to alien functions
2389 * fixed some bugs revealed by Paul Dietz' test suite:
2390 ** the type-error signalled from WARN has a filled-in DATUM slot.
2391 ** the type-error required when a stream is not associated with
2392 a file has the stream as its datum.
2393 ** type-errors on single-floats on x86-64 no longer have
2394 :INVALID-OBJECT as the datum
2395 ** the type-errors signalled for invalid function names now have
2396 a correct expected type
2397 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2398 for structures defined with a :TYPE. Documentation strings for
2399 typed structures are no longer immediately discarded
2400 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2401 broadcast streams and synonym streams. FILE-LENGTH now also works
2402 on broadcast streams.
2404 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2405 * incompatible change: the --noprogrammer option, deprecated since
2406 version 0.7.5, has been removed. Please use the equivalent
2407 --disable-debugger option instead.
2408 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2410 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2411 inoperational for a while now) has been completely removed.
2412 * null lexical environments are now printed as #<NULL-LEXENV>,
2413 significantly reducing the amount of clutter in typical backtraces.
2414 * documentation on weak pointers, finalization, and after GC hooks
2415 has been added to the manual.
2416 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2417 as other specialized array types, is much faster. SUBSEQ and
2418 COPY-SEQ on such arrays have also been sped up.
2419 * optimization: EQL is now more efficient when at least other argument
2420 is known to be of type (OR FIXNUM (NOT NUMBER)).
2421 * fixed bug: the runtime is now less vulnerable to changes in the
2422 size of the SBCL object on OS X, and virtual memory is reserved for
2423 all spaces that need to be at a fixed address.
2424 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2425 * fixed bug: finalizers and after GC hooks that cause consing are now
2427 * fixed bug: compiler error messages and summaries are now printed to
2428 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2429 * fixed inference of the upper bound of an iteration variable.
2430 (reported by Rajat Datta).
2431 * fixed bug 211e: calling local functions with duplicated constant
2432 keyword argument no longer causes a bogus style warning about an
2434 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2435 ftype declaration to be disregarded. (reported by Dave Roberts)
2436 * fixed bug 373: caused by erronous compilation of references to alien
2437 variables in the runtime on ppc/darwin.
2438 * fixed bug 376: CONJUGATE type deriver.
2439 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2440 (reported by Baughn on #lisp)
2441 * a cross-compiler bug on non-x86 platforms has been identified and
2442 fixed. (thanks to Bruno Haible)
2443 * improvements to the MIPS runtime code for increased stability.
2444 (thanks to Thiemo Seufer)
2445 * increased the maximimum compact environment size to allow
2446 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2447 * partial workaround for bug 135: don't name the function we're
2448 calling for hairy cases of EVAL, so as not to accumulate one environment
2449 entry per call to EVAL. (reported by Kevin Reid)
2450 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2451 * optimization: type testing for non-vector arrays should be faster.
2452 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2454 * bug fix: setting 31st element of a bit vector to zero did not work
2456 * bug fix: redefining a class definition which failed due to a
2457 previous accessor / function clash now works (but see BUGS entry
2458 #380 for more problems in this area). (thanks to Zach Beane)
2459 * the long form of DEFINE-METHOD-COMBINATION disables method group
2460 checking when given a single method group with pattern *. (thanks
2462 * on x86 compiler supports stack allocation of results of simple
2463 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2464 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2465 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2466 * fixed some bugs related to Unicode integration:
2467 ** the restarts for recovering from input and output encoding
2468 errors only appear when there is in fact such an error to
2470 * fixed some bugs revealed by Paul Dietz' test suite:
2471 ** MISC.549 and similar: late transformation of unsafe type
2472 assertions into derived types caused unexpected code
2474 ** SCALE-FLOAT type deriver is less wrong.
2475 ** type derivers for EXP, LOG and similar functions compute result
2476 types for complex arguments better.
2477 ** (MISC.563) CONJUGATE type deriver works for very restricted
2479 ** out-of-line type testers for character strings are available.
2480 ** EQUAL compiler transform understands specialness of objects
2482 ** accessing double-floats stored on the stack now works on x86-64.
2483 ** debugger internals could sometimes create invalid lispobjs,
2484 resulting in GC crashes.
2485 ** MISC.548: type check weakening can convert required type into
2487 ** initialization forms for bindings are not in scope of free special
2490 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2491 * incompatible change: thread support for non-NPTL systems has
2492 been removed - locking is buggy and unreliable. A threaded
2493 SBCL build will now warn at startup and refuse to create
2494 new threads, unless futex support is detected in the kernel
2495 * incompatible change: the top level REPL now has only an ABORT
2496 restart associated with it, not TOPLEVEL and ABORT as it used to.
2497 TOP and TOPLEVEL are now available as debugger commands for
2498 returning to the top level.
2499 * incompatible change: forms evaluated in the REPL now use the
2500 global optimization policy.
2501 * incompatible change: user- and system-initialization files are
2502 no longer processed with LOAD, but by READ and EVAL; hence the
2503 global optimization policy, startup package, readtable, etc,
2505 * The .fasl file format number has been incremented because of
2506 various incompatible changes.
2507 * internal entry point details and argument counts no longer appear
2508 in backtraces unless explicitly requested by setting
2509 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2510 * built-in and standard functions no longer have names like "top
2511 level local call to FOO".
2512 * fixed bug 32: functions defined in non-null lexical environments
2513 now have more legible printed representation
2514 * fixed bug 33: functions defined in non-null lexical environemnts
2515 are now more amenable to inspection by INSPECT.
2516 * workaround for bug 354: XEPs no longer appear in backtraces unless
2517 explicitly requested.
2518 * fixed bug: receiving the signal which results from attempting to
2519 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2520 SIGBUS on other *BSDs) on architectures where the C stack is also
2521 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2522 to debugger confusion or wild instability. (reported by Cheuksan
2524 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2525 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2526 (reported by Lutz Euler)
2527 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2528 compiled code. (reported by Paul Dietz)
2529 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2530 specialized parameter to a method to something that is not TYPEP
2531 the specializer is now possible.
2532 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2533 face of package deletion.
2534 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2535 pathname. (reported by David Tolpin on c.l.l)
2536 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2537 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2538 STRING-STREAM and FILE-STREAM, respectively.
2539 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2540 than previously; in addition, its test suite is now run on build.
2541 (thanks to Luke Gorrie)
2542 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2543 * optimization: added a immediate representation for single-floats
2545 * fixed some bugs revealed by Paul Dietz' test suite:
2546 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2547 ** attempting to create a package with a colliding nickname causes
2548 correctable errors to be signalled.
2549 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2550 ** several x86-64 backend bugs related to sign-extension of immediate
2553 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2554 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2555 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2557 * fixed loading of multiply forward-referenced layouts.
2558 (thanks to Cheuksan Wang)
2559 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2560 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2561 (see COMPILE-FILE documentation for details of :PRINT option)
2562 * fixed bugs 19 and 317: fixed-format floating point printing is
2563 more accurate. This also fixes a bug reported by Adam Warner
2564 related to the ~@F format directive.
2565 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2567 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2568 dispatch table if the from-char is a dispatch macro character.
2569 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2570 by the wordsize no longer ignore the last word. (reported by Lutz
2572 * fixed bug in type checking of dynamic-extent variables. (reported
2574 * optimization: sequence traversal functions use their freedom to
2575 coerce function designators to functions.
2576 * optimization: code with many calls to CLOS methods specialized on
2577 CLOS classes has had redundant type checks removed.
2578 * optimization: added declarations to speed up operations that access
2579 the internal character database (for example STRING-UPCASE)
2580 * optimization: comparison operations between floats and sufficiently small
2581 fixnums no longer create extra rationals
2582 * fixed some bugs related to Unicode integration:
2583 ** portions of multibyte characters at the end of buffers for
2584 character-based file input are correctly transferred to the
2585 start of the buffer at the next read.
2586 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2587 passing it through to OPEN.
2588 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2589 argument given to internal calls to OPEN.
2590 ** the built-in comment readers (introduced by character sequences
2591 ";" and "#|") are more forgiving to encoding errors; they will
2592 STYLE-WARN and then attempt to resync the stream at a character
2593 boundary. (thanks to Teemu Kalvas)
2594 * fixed some bugs in the x86-64 port:
2595 ** Negative short int return values from c-calls are sign-extended
2597 ** The stack is aligned to 16-bytes for c-calls, as required by
2598 the ABI. (thanks to Cheuksan Wang)
2599 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2600 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2601 for enums. (thanks to Vincent Arkesteijn)
2602 ** Multiple small optimizations and bugfixes for floating point
2604 * fixed some bugs revealed by Paul Dietz' test suite:
2605 ** Space, Tab, Linefeed, Return and Page have the invalid
2606 secondary constituent character trait.
2607 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2609 ** WITH-INPUT-FROM-STRING should only update the index place on
2611 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2612 works more reliably.
2613 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2614 with one-dimensional arrays with fill pointers.
2615 ** TYPE-OF failed on a complex with an integer realpart and a
2617 ** compiler failure during type inference for the code of form
2618 (IF (EQL X (THE ...)) ...) (MISC.535).
2620 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2621 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2622 platform. The port supports 61-bit fixnums, large memory spaces
2623 and reloading shared object files.
2624 * enhancement: saving cores with foreign code loaded is now
2625 supported on ppc/Darwin in addition to the previously supported
2627 * enhancement: the statistical profiler now walks deeper into the
2628 call stack for more meaningful call-graphs and accrued time
2629 reports (x86/x86-64 only). It also now reports time spent in
2631 * enhancement: it is now possible to trace most individual methods
2632 of a generic function in addition to tracing the generic function
2634 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2636 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2637 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2638 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2639 produces an error. (thanks to Vincent Arkesteijn)
2640 * bug fix: NAMESTRING on pathnames with :WILD components in their
2641 directories works correctly. (thanks to Artem V. Andreev)
2642 * fixed bug 125: compiler preserves identity of closures. (reported
2644 * bug fixed: functions with &REST arguments sometimes failed with
2645 "Undefined function" when compiled with (DEBUG 3). (reported by
2647 * bug fix: overflow during compiling of setting element of a bit
2648 vector with constant index and value. (reported by Timmy Douglas)
2649 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2650 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2651 * on x86 compiler partially supports stack allocation of dynamic-extent
2653 * GO and RETURN-FROM do not check the extent of their exit points
2654 when compiled with SAFETY 0.
2655 * fixed some bugs related to Unicode integration:
2656 ** encoding and decoding errors are now much more robustly
2657 handled; it should now be possible to recover even from invalid
2658 input or output to the terminal. (thanks to Teemu Kalvas)
2659 ** provided a first cut at implementing STRING-TO-OCTETS and
2660 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2661 ** altered the SB-MD5 contributed module slightly, changing the
2662 interface just enough for it to be supportable for builds where
2663 lisp characters are not eight bits.
2664 * fixed some bugs revealed by Paul Dietz' test suite:
2665 ** the FORMATTER-generated functions for ~V[ conditionals require
2666 the correct number of arguments.
2667 ** READ-FROM-STRING returns the mandated second value when applied
2668 to displaced strings.
2669 ** the #\Rubout and #\Backspace characters are treated as invalid
2670 constituent characters by the tokenizer.
2672 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2673 * new feature: reloading changed shared object files with
2674 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2675 * new feature: references to foreign variables and functions
2676 can now be compiled and loaded before the corresponding shared
2677 object file is loaded, as long as the foreign definitions are
2678 available at runtime.
2679 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2680 supported. (thanks to Dan Debertin)
2681 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2682 just keywords. (thanks to Vincent Arkesteijn)
2683 * fixed bug #331: structure-class instances corresponding to
2684 DEFSTRUCT forms are now created eagerly.
2685 * fixed bug #345: backtraces from calls to undefined functions work
2686 on x86 as well. Related bug #61 is now also partially fixed on x86
2687 (backtraces from throws to unknown catch tags.)
2688 * bug fix: lambda-list parsing is now stricter vrt. order and number
2689 of lambda-list keywords.
2690 * bug fix: as specified by AMOP, an error is signalled if a
2691 class-option appears multiple times in a DEFCLASS form. (reported
2693 * bug fix: RANDOM can be compiled when the compiler derives the type
2694 of its numeric argument as a disjoint set of small integers.
2695 (reported by Paul Dietz)
2696 * bug fix: starting a core saved with shared objects loaded when
2697 those objects are not available no longer causes threaded SBCL to
2698 hang. (reported by Sean Ross)
2699 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2701 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2702 argument, which must always be NIL. (reported by Kalle Niemitalo)
2703 * bug fix: printing 1.0d+23 no longer results in an error.
2704 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2705 * bug fix: structure slot setters preserve evaluation order. (thanks
2707 * fixed some bugs related to Unicode integration:
2708 ** RUN-PROGRAM can allow its child to take input from a Lisp
2709 stream. (reported by Stefan Scholl)
2710 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2711 locales. (reported by Ken Causey)
2712 * fixed some bugs revealed by Paul Dietz' test suite:
2713 ** INCF, DECF and REMF evaluate their place form as specified in
2715 ** FORMATTER expands ~{ ~} iteration directives with V or #
2716 parameters correctly.
2717 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2718 consequent uses no arguments correctly.
2719 ** the system has a partial understanding of the (COMPLEX RATIO)
2721 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2724 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2725 * new feature: a build-time option (controlled by the :SB-UNICODE
2726 keyword feature, enabled by default) for building the system with
2727 support for the entire 21-bit character space defined by the
2729 * new feature: the system now has rudimentary external-format
2730 support; the primary user-visible change at this time is that
2731 characters with the high bit set (such as lower-case-e-acute) will
2732 print correctly to a terminal in a UTF-8 environment.
2733 * minor incompatible change: BASE-CHAR no longer names a class;
2734 however, CHARACTER continues to do so, as required by ANSI.
2735 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2736 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2737 has been moved to the SB-EXT package (temporarily re-exported from
2739 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2740 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2742 * fixed bug #351: better error-handlind and reporting for malformed
2744 * fixed bug #350: bignum-printing is now more memory-efficient,
2745 allowing printing of very large bignums, eg. (expt 2 10000000).
2746 (reported by Bruno Haible)
2747 * fixed bug #302: better primitive-type selection for intersection
2749 * fixed bug #308: non-graphic characters now all have names, as
2750 required. (reported by Bruno Haible)
2751 * bug fix: redefining a class with different superclasses now correctly
2752 removes it from the direct-subclasses of its previous superclasses.
2753 (reported by David Morse)
2754 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2755 new value now works. (reported by Bruno Haible)
2756 * bug fix: correct canonicalization of multiple non-standard slot
2757 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2758 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2759 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2760 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2761 now exists, an signals an error.
2762 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2763 during macroexpansion for non-iteration variables as well. (reported
2764 by Bruno Haible for CMUCL)
2765 * bug fix: Cyclic structures and unprintable objects in compiler
2766 messages no longer cause errors. (reported by Bruno Haible)
2767 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2768 and READ-FROM-STRING all now return a primary value of NIL if
2769 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2770 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2771 (reported by Bruno Haible for CMUCL)
2772 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2773 do not designate a condition. (reported by Bruno Haible for
2775 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2776 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2777 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2778 permitting resolution in favour of any of the conflicting symbols.
2779 (reported by Bruno Haible for CMUCL)
2780 * bug fix: EQUAL compiler optimizations is less aggressive on
2781 strings which can potentially compare true despite having distinct
2782 specialized array element types.
2783 * bug fix: unit enumerations can be defined without dividing by
2784 zero. (thanks to Vincent Arkesteijn)
2785 * FORMAT compile-time argument count checking has been enhanced.
2786 (report from Bruno Haible for CMUCL)
2787 * a partial workaround for the bug 262: the compiler does not try to
2788 inline-expand a local function doing RETURN-FROM from a deleted
2789 BLOCK. (thanks to Peter Denno for the bug report and to David
2790 Wragg for the simple test case)
2791 * fixed some bugs revealed by Paul Dietz' test suite:
2792 ** RENAME-PACKAGE allows all package designators as new package
2794 ** constraint propagation and lambda variable substitution are
2795 more cautious in dealing with partially deleted code.
2796 ** compiler sometimes lost reoptimization passes.
2797 ** CERROR, given a condition as condition designator, passes its
2798 remaining arguments to the continue format control without
2800 ** Case-altering FORMAT directives work correctly on non-ASCII
2802 ** The REAL type specifier handles bounds outside the floating
2803 point ranges without signalling FLOATING-POINT-OVERFLOW.
2804 ** Functions with IR1-transformations can create intercomponent
2805 references to global functions.
2806 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2808 ** FORMAT ~R treats a nil value for its first parameter correctly.
2810 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2811 * enhancement: saving cores with foreign code loaded is now
2812 supported on x86/NetBSD and sparc/Linux in addition to the previously
2813 supported platforms.
2814 * bug fix: on some platforms repeated installations caused multiple
2815 copies of HTML documentation to be installed -- should not happen
2816 any more. (reported by Stefan Scholl)
2817 * bug fix: parsing self-recursive alien record types multiple times
2818 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2819 original patch by Helmut Eller for CMUCL)
2820 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2821 (thanks to Richard Kreuter)
2822 * bug fix: defining classes whose accessors are methods on existing
2823 generic functions in other (locked) packages no longer signals
2824 bogus package lock violations. (reported by François-René Rideau)
2825 * bug fix: special variables as DEFMETHOD parameters no longer have
2826 associated bogus type declarations. (reported by David Wragg and
2828 * bug fix: read-write consistency on streams of element-type
2829 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2830 * bug fix: redefiniton of the only method of a generic function with
2831 no DEFGENERIC no longer emits a full WARNING. In addition,
2832 redefinition of generic functions with no DEFGENERIC to an
2833 incompatible lambda list now signals an error. (thanks to Zach
2835 * bug fix: DEFGENERIC now works even when there's a function of the
2836 same name in an enclosing lexical environment. (thanks to Zach
2838 * fixed compiler failure, caused by instrumenting code during
2839 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2840 * optimization: added loop analysis and improved register allocation
2841 * fixed some bugs revealed by Paul Dietz' test suite:
2842 ** POSITION on displaced vectors with non-zero displacement
2843 returns the right answer.
2844 ** (SIMPLE-STRING) is a valid type specifier for sequence
2846 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2848 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2849 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2851 ** The justification version of the FORMAT ~< directive treats
2852 non-zero minpad parameter correctly.
2854 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2855 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2856 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2857 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2858 the supported interface.
2859 * new feature: Single-stepping of code compiled with DEBUG 2 or
2860 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2861 * new feature: saving cores with foreign code loaded is now
2862 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2863 Timothy Moore's work for CMUCL)
2864 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2865 parameters to * instead of NIL if no initform is supplied.
2866 (reported by Johan Bockgaard)
2867 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2868 correctly when FUNCALL appears as the car of the form. Note:
2869 despite this FUNCALL forms are not currently subject to
2870 compiler-macro expansion. (port of Raymond Toy's fix for the
2871 same from CMUCL, reported by Johan Bockgaard)
2872 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2873 (thanks for Teemu Kalvas)
2874 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2875 case instead of terminating the iteration (thanks for Julian
2876 Squires, Sean Champ and Raymond Toy)
2877 * bug fix: incorrect expansion of defgeneric that caused a style
2878 warning. (thanks for Zach Beane)
2879 * bug fix: slot accessor effective method computation works properly
2880 for classes with multiple non-standard applicable methods on
2881 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2882 * on x86 compiler supports stack allocation of results of LIST and
2883 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2884 CMUCL implementation by Gerd Moellmann)
2885 * fixed some bugs revealed by Paul Dietz' test suite:
2886 ** FORMAT strings with both the ~<~:;~> form of the justification
2887 directive and pretty-printing directives cause an error.
2889 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2890 * incompatible change: the internal functions
2891 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2892 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2893 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2894 instead of the old functions.
2895 * new feature: on platforms where "dladdr" is available foreign
2896 function names now appear in backtraces. (based on Helmut Eller's
2898 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2899 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2901 * documentation: ASDF manual is now distributed with SBCL.
2902 * bug fix: SBCL can now load its contributed modules with REQUIRE
2903 even if the system-provided entries have been removed from
2904 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2906 * bug fix: backtraces involving undefined functions or assembly
2907 routines are more informative. (thanks to Brian Downing)
2908 * bug fix: mutually referent alien structures now work correctly.
2909 (reported by Rick Taube)
2910 * bug fix: structures defined by WITH-ALIEN can be referred to
2911 within other definitions in the same WITH-ALIEN.
2912 * bug fix: division operators (MOD, TRUNCATE and the like) with
2913 constant zero divisors and integer dividends no longer generate
2915 * bug fix: provide default methods for INPUT-STREAM-P and
2916 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2917 * bug fix: improve the detection and resolution of MOP metacycles
2918 (where effective method computation depends on the generic function
2919 having its effective method computed). (reported by Bruno Haible)
2920 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2921 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2922 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2923 * bug fix: pathnames with relative directory components can be
2924 represented relative to default pathnames.
2925 * optimization: in taking the GCD of bignums, reduce the two bignums
2926 to approximately the same size (using Euclid's algorithm) before
2927 applying the more sophisticated binary GCD. (thanks to Juho
2929 * optimization: COUNT on bitvectors now operates word-at-a-time.
2930 * optimization: ASH with a positive, but not necessarily constant,
2931 (leftwards) shift, when in a modular context, is compiled to a
2933 * fixed some bugs revealed by Paul Dietz' test suite:
2934 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2935 if the corresponding argument is NIL.
2936 ** FORMAT directives accepting a minpad parameter treat negative
2938 ** literal commas as character parameters to FORMAT directives are
2940 ** literal spaces directly after ~<Newline> directives within a
2941 format-logical-block (~:< ~@:>) do not induce :FILL-style
2942 conditional newlines.
2943 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2944 as specified: it no longer includes conditional newlines).
2945 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2947 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2948 :PER-LINE-PREFIX argument does not evaluate to a string.
2950 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2951 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2952 the manual for details; for now, package locks can be disabled by
2953 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2954 if no major problems are found then it is likely that they will be
2955 compiled in unconditionally.
2956 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2957 unsupported operators on all platforms. To load a shared library
2958 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2959 object file, link it into a shared library outside of SBCL and
2960 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2962 * bug workaround: ROOM T and the GC were not working together
2963 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2964 reporting facility aren't preserved. That reporting has been
2965 disabled, so now until and unless someone figures out how to make it
2966 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2967 * minor incompatible change: as threatened around sbcl-0.8.0, the
2968 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2969 The symbols are also exported from SB-PCL for backwards
2970 compatibility, but more so than before SB-PCL should be treated as
2971 an implementation-internal package.
2972 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2974 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2975 It is known as of this release not to work on the Alpha, however.
2976 * fixed bug #167: errors signalled due to illegal syntax in method
2977 bodies are now more legible.
2978 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2979 designators and can hence be used with TYPEP.
2980 * fixed bug #333: CHECK-TYPE now ensures that the type error
2981 signalled, if any, has the right object to be accessed by
2982 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2983 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2984 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2986 * fixed bug #334: programmatic addition of slots using specialized
2987 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2988 and :ALLOCATION :CLASS slots.
2989 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2990 float exponents. (rereported by Peter Seibel)
2991 * fixed a bug: #\Space (and other whitespace characters) are no
2992 longer considered to be macro characters in standard syntax by
2993 GET-MACRO-CHARACTER.
2994 * fixed bug: initialization of condition class metaobjects no longer
2995 causes an instance of the condition to be created. (reported by
2997 * fixed bug: it is now possible to have slots such that
2998 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2999 description is neither :INSTANCE nor :CLASS.
3000 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3001 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3002 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3003 non-standard SLOT-DEFINITION-ALLOCATION values.
3004 * fixed bugs: various race conditions handling exiting threads.
3005 CL-PPCRE's thread torture test now passes.
3006 * fixed arguably-a-bug: GC time proportional to number of threads in
3007 system even when most of them are idle
3008 * optimization: improved performance of BIT and SBIT on bit-vectors.
3009 * .fasl file incompatibility: The fasl file version number has
3010 been incremented because of changes associated with package locks.
3012 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3013 * minor incompatible change: the system no longer provides
3014 optimization hints (conditions which are TYPEP
3015 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3016 mode; these hints are still emitted when higher SPEED optimization
3018 * new contrib module: a sampling profiler (profiling by statistical
3019 sampling, rather than by instrumenting functions) is available as
3020 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3021 * the behaviour of the standard function ED is now customizeable by
3022 third parties through a hook variable: see ED's documentation
3023 string for information on the protocol.
3024 * the compiler no longer emits efficiency notes for (FUNCALL X)
3025 when the type of X is uncertain under default optimization
3027 * fixed bug 276: mutating a binding of a specialized parameter to a
3028 method to something that is not TYPEP the specializer is now
3030 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3031 exhibit the required behaviour on the x86 platform. (thanks to
3032 Peter van Eynde, Eric Marsden and Bruno Haible)
3033 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3034 even for difficult arguments. (reported by Peter Graves)
3035 * fixed bug 141a: the backquote printer now descends quoted
3037 * fixed another bug in backquote printing: no more destructive
3038 modification of the form's list structure. (reported by Brian
3040 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3041 move between its address being taken and the call to
3042 interrupt_thread, fixing a crashing race condition.
3043 * the SB-POSIX contrib implementation has been adjusted so that it
3044 no longer exhibits ridiculously poor performance when constructing
3045 instances corresponding to C structs.
3047 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3048 * minor incompatible change: the sb-grovel contrib now treats C
3049 structures as alien (in the sense of SB-ALIEN) objects rather than
3050 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3051 has implications for memory management of client code
3052 (sb-grovel-returned objects must now be manually managed) and for
3053 type safety (alien objects now have full types).
3054 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3055 used to control emission of compiler diagnostics, rather than the
3056 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3057 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3058 quality should be considered deprecated.
3059 * install.sh now installs the user manual as well
3060 * (not quite a new documentable feature, but worth considering in
3061 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3062 beginnings of a semantically meaningful condition hierarchy is
3063 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3065 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3066 designator as the defaults argument.
3067 * fixed bug: Displaced arrays whose displaced-to array has become
3068 too small now cause ARRAY-DIMENSION to signal an error, providing
3069 for safer bounds-checking. (reported by Bruno Haible)
3070 * fixed bug: DEFCLASS slot definitions with identical :READER and
3071 :WRITER names now signal a reasonable error. (reported by Thomas
3073 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3075 * fixed bug: Invalid slot specification errors now print correctly.
3076 (thanks to Zach Beane)
3077 * fixed bug 320: Shared to local slot value transfers in class
3078 redefinitions now happen corrently from superclasses as
3079 well. (reported by Bruno Haible)
3080 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3082 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3083 improper lists correctly. (reported by Bruno Haible)
3084 * fixed bug 313: source-transform for <fun-name> was erroneously
3085 applied to a call of a value of a variable with name <fun-name>.
3086 (reported by Antonio Menezes Leitao)
3087 * fixed bug 307: The obsolete instance protocol ensures that
3088 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3089 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3090 remove dead unknown-values globs from the middle of the stack.
3091 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3092 easier to resume long computations after using *BREAK-ON-SIGNALS*
3093 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3094 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3095 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3096 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3097 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3098 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3100 * fixed a (fairly theoretical) bug in string printing: if
3101 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3102 does not have array-element-type equal to the most general string
3104 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3105 function name. (thanks to Nikodemus Siivola)
3106 * fixed bug: compile-time format string checker failed on
3107 non-closed ~{. (reported by Thomas F Burdick)
3108 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3109 don't warn on legal loop code involving more than one aggregate
3110 boolean. (thanks to Nikodemus Siivola)
3111 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3112 in keyword position to MAKE-PACKAGE was not being reported as
3114 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3115 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3117 * fixed bugs 280 and 312: the checking for multiple definitions in a
3118 file is less likely to become confused by uses of inline
3120 * fixed bug: the #S reader macro performs the keyword coercion
3121 specified for slot names. (reported by Kalle Niemitalo)
3122 * fixed bug: lambda lists may contain symbols whose names start with
3123 & but are not lambda-list-keywords; their occurrence triggers a
3125 * fixed bug 321: define-method-combination argument lambda lists do
3126 not cause invalid code to be generated when &optional or &aux
3127 variables have default values. (reported by Bruno Haible)
3128 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3129 have CLOS classes; this appears also to have fixed reported
3130 instability in stack exhaustion detection.
3131 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3132 MUFFLE-WARNING when no associated restart is present is now
3134 * optimization: rearranged the expansion of various defining macros
3135 so that each expands into only one top-level form in a
3136 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3138 * optimization: used a previously little-used slot in symbols to
3139 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3141 * fixed some bugs revealed by Paul Dietz' test suite:
3142 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3144 ** Fixed an optimization bug related to inheritance of initforms
3145 from local to shared slots.
3146 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3147 ** CAST optimizer forgot to flush argument derived type.
3148 ** print/read consistency on floats is now orders of magnitude
3149 more likely. (thanks also to Bruno Haible for a similar report
3151 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3152 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3153 for objects of type REAL. Make it so.
3154 ** SXHASH is specified (infelicitously) to respect similarity,
3155 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3156 it so. (thanks to Markus Ziegler)
3157 ** on the Alpha, the compiler succeeds in compiling functions
3158 returning a known number of arguments greater than 63.
3159 ** fixed handling of invalid NIL arguments in keyword position
3161 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3163 ** provided a readably-printable representation for RANDOM-STATE
3165 ** ensured that pathnames, where they have a namestring, always
3166 print using #P"..." syntax.
3168 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3169 * Support for the forthcoming 2.0 version of the NetBSD kernel
3170 running on x86 hardware has been added. (thanks to Perry
3171 E. Metzger most immediately, and others for their past work)
3172 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3173 current release version; SBCL's OpenBSD support had been broken
3174 since about the time of OpenBSD's switch to ELF binary format.)
3175 * [placeholder for DX summary]
3176 ** user code with &REST lists declared dynamic-extent, under high
3177 speed or space and low safety and debug optimization policy.
3178 * The manual has been converted to Texinfo format and the debugger
3179 chapter from the cmucl manual has been added.
3180 * A facility has been added to extract documentation strings from
3181 sbcl and store them as Texinfo-formatted snippets for inclusion in
3182 the manual (via Texinfo's @include directive)
3183 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3184 the test case to Dave Roberts)
3185 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3186 pointers. (reported by Sean Ross)
3187 * bug fix: PROFILE output is printed nicely even for large numerical
3188 values. (thanks to Zach Beane)
3189 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3190 greater than 32 handle EOF correctly.
3191 * bug fix: on X86 an immediate argument of the IMUL instruction is
3192 correctly printed in disassembly. (thanks to Lutz Euler)
3193 * bug fix: class slots in redefined classes preserve their old
3194 values. (thanks to Bruno Haible and Nikodemus Siivola)
3195 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3196 succeeds. (reported by Marco Baringer)
3197 * fixed some bugs revealed by Paul Dietz' test suite:
3198 ** READ-SEQUENCE now works on ECHO-STREAMs.
3199 ** RATIONALIZE works more according to its specification. (thanks
3202 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3203 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3204 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3205 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3206 should matter to you only if you rebind the printer control
3207 variables and then find you want different bindings in the
3208 debugger than in the ordinary execution of your program.)
3209 * The runtime build system has been tweaked to support building
3210 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3211 assembler and linker. (thanks to Nikodemus Siivola)
3212 * Unbound, undefined, undeclared variables now trigger full
3213 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3214 more often programmer error than deliberate exploitation of undefined
3216 * optimization: the hash algorithm for strings has changed to one
3217 that is less vulnerable to spurious collisions. (thanks to Juho
3219 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3220 needless bounds checking. (thanks to Juho Snellman)
3221 * optimization: implemented multiplication as a modular
3222 (UNSIGNED-BYTE 32) operation on the PPC backend.
3223 * fixed some bugs revealed by Paul Dietz' test suite:
3224 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3226 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3227 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3228 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3230 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3232 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3234 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3235 their output stream on EOF from read.
3236 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3237 have been read to end-of-file.
3238 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3240 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3241 description of determination of which consecutive characters
3243 ** Printing the "Space" character with escaping on now yields "#\\ ",
3244 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3245 ** Reading floating-point numbers with *READ-BASE* set to a number
3246 less than 10 works correctly.
3247 ** Reading floating-point numbers with *READ-BASE* set to a number
3248 more than 10 works correctly.
3249 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3250 the readtable currently in effect.
3252 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3253 * minor incompatible change: parsing of namestrings on a physical
3254 (Unix) host has changed; numbers after the final #\. in a
3255 namestring are no longer interpreted as a version field. This is
3256 intented to be largely invisible to the user, except that the
3257 meaning of the namestring "*.*.*" has changed: it now refers to a
3258 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3259 should usually be replaced by
3260 (make-pathname :name :wild :type :wild :version :wild)
3261 with the added benefit that this is more likely to be portable.
3262 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3263 option to OPEN now signals an error if the file being opened
3264 exists; this may have an impact on existing code.
3265 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3266 signals received, on the PowerPC platforms (both Linux and
3267 Darwin). (thanks to Pierre Mai for pointing out the location of
3269 * several fixes on OS X: The system now builds and runs cleanly on
3270 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3271 (thanks to Brian Mastenbrook)
3272 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3273 second-resolution: integer multiples of 1/3600 between -24 and 24.
3274 (thanks to Vincent Arkesteijn)
3275 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3276 type when called with 1 argument; PEEK-CHAR checked type of
3277 PEEK-TYPE only after having read first character from a
3278 stream. (reported by Peter Graves)
3279 * bug fix: the garbage collector now has much better locality
3280 behaviour, and in particular no longer treats all memory as being
3281 exhausted when many small objects point to each other in a deeply
3283 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3284 recognized as being TYPEP their class.
3285 * bug fix: the PUSHNEW documentation string has been corrected.
3286 (thanks to Vincent Arkesteijn)
3287 * bug fix: defaulting of the value for the last of an atypically
3288 large number of multiple values being bound was not being
3289 performed correctly on the Alpha or PPC platforms
3290 * optimization: implemented multiplication as a modular
3291 (UNSIGNED-BYTE 32) operation on the x86 backend.
3292 * optimization: SEARCH on simple-base-strings can now be open-coded.
3293 (see also contrib/compiler-extras.lisp for inspiration for
3294 teaching the compiler about the Boyer-Moore algorithm).
3295 * value, returned by MAX (and MIN) called with several EQUALP, but
3296 not EQL, arguments now does not depend on compiler settings.
3297 * fixed some bugs revealed by Paul Dietz' test suite:
3298 ** in stack analysis liveness information is propagated from
3299 non-local entry points.
3300 ** pathwise CAST removing failed when the CAST node did not start
3302 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3303 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3305 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3306 host is already defined.
3307 ** RENAME-FILE works on streams instead of signalling an internal
3309 ** PEEK-CHAR uses the current readtable when determining whether
3310 or not a character is whitespace.
3311 ** MERGE-PATHNAMES handles the case when the pathname does not
3312 specify a name while the default-pathname specifies a version.
3313 ** Pathnames now stand a better chance of respecting print/read
3315 ** Attempting to use standardized file system operators with a
3316 pathname with invalid :DIRECTORY components signals a
3318 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3320 ** DIRECTORY on logical pathnames is more correct.
3321 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3322 signal a TYPE-ERROR if their argument is not a stream.
3323 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3324 designator argument does not designate a stream.
3325 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3326 examining the synonym.
3327 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3329 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3330 element-type larger than ([UN]SIGNED-BYTE 32).
3332 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3333 * When built with the :SB-FUTEX feature, threaded builds now take
3334 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3335 for faster/more reliable mutex and condition variable support.
3336 * Incompatible change (but one you probably shouldn't have been using
3337 anyway): the interface and code for arbitrating between multiple
3338 threads in the same user session has been redesigned.
3339 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3340 error when called without an explicit environment argument.
3341 (thanks to Nikodemus Siivola)
3342 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3343 confused about their position. (thanks to Adam Warner and Gerd
3345 * bug fix: Pretty printing backquoted forms with unquotations in the
3346 argument list position of various code constructs such as LAMBDA
3347 now works correctly. (reported by Paul Dietz)
3348 * bug fix: Pretty printing unquotations no longer loses all
3349 stream position information.
3350 * optimization: performance of string output streams is now less
3351 poor for multiple small sequence writes.
3352 * optimization: performance of CSUBTYPEP in the presence of complex
3353 expressions involving CONS and NOT many times has been improved.
3354 (reported by Paul Dietz)
3355 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3357 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3358 streams for the REPL, for the debugger, and so on. (thanks to
3360 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3361 * fixed some bugs revealed by Paul Dietz' test suite:
3362 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3363 is ignored if it is too small, rather than propagating through
3364 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3365 ** extremely complex negations of CONS types were not being
3366 sufficiently canonicalized, leading to inconsistencies in
3368 ** VALUES tranformer lost derived type.
3370 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3371 * fixed a bootstrapping bug: the build process no longer assumes
3372 that the various BOOLE-related constants have the same value in
3373 host and target lisps. (noted by Paul Dietz' test suite on an
3374 SBCL binary built from CLISP)
3375 * The system can now be dynamically linked on the MIPS platform,
3376 which enables dynamic loading of foreign code from Lisp. (thanks
3377 to Ralf Baechle for discussions on the MIPS ABI)
3378 * The system now records debugging information for its own source
3379 files in a filesystem-position-independent manner, relative to
3380 the "SYS" logical host.
3381 * fixed a compiler bug: MV-LET convertion did not check references
3382 to the "max args" entry point. (reported by Brian Downing)
3383 * tweaked disassembly notes to be less confident about proclaiming
3384 some instruction as an LRA. (thanks to Brian Downing)
3385 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3386 now each have their own history, command character, and other
3387 characteristics. (thanks to David Lichteblau)
3388 * fixed some bugs revealed by Paul Dietz' test suite:
3389 ** compiler failure in compiling LOGAND expressions including a
3391 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3392 shift greater than 32.
3393 ** FLUSH-DEST did not mark blocks for type check regeneration.
3394 ** HANDLER-CASE failed to accept declarations in handler clauses
3395 in some circumstances.
3397 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3398 * New code in contrib/sb-introspect (still probably not entirely
3399 stable yet) provides some support for smart Lisp development
3400 environments like SLIME.
3401 * The conditions signalled for errors occurring when loading .fasl
3402 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3403 in a way which should help ASDF recover gracefully.
3404 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3405 stuff has been cleaned up. If you code contrib/ stuff, this might
3406 affect you, and you can look at contrib/README, contrib/STANDARDS,
3407 and/or the 0.8.4.27 diff to check.
3408 * In full calls the compiler now does not generate checks for declared
3409 argument types for all arguments.
3410 * various threading fixes
3411 ** and some experimental patches which didn't make it into
3412 the main tree for this release, but which are shipped in
3413 contrib/experimental-thread.patch as a possible fix for some
3414 failures (deadlock, spinning...) in GC-intensive multithreaded
3416 * fixed PPC build problem (source code incompatibility of different
3417 library versions): added offsetof() hackery which attempts to divine
3418 where glibc maintainers put uc_mcontext today
3419 * fixed bug 282: compiler does not trust type assertions while passing
3420 arguments to a full call.
3421 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3422 &OPTIONAL VALUES type parameter.
3423 * fix bug 214: algorithm for noting rejected templates is now more
3424 similar to that of template seletion. (also reported by rydis on
3426 * fixed bug 141b: printing backquoted information readably and prettily
3427 inserts a space where necessary.
3428 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3429 (CHARACTER 10) are now reported as errors, rather than propagated
3430 as unknown types. (reported by piso on #lisp)
3431 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3432 with values NIL and :ERROR. (thanks to Milan Zamazal)
3433 * fixed bug 191c: CLOS now does proper keyword argument checking as
3434 described in CLHS 7.6.5 and 7.6.5.1.
3435 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3436 longer raise an error; further, using a list as a for-as-arithmetic
3437 counter now raises a meaningful error.
3438 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3439 now understood by sequence creation functions such as MAKE-SEQUENCE
3441 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3442 a STRING-INPUT-STREAM.
3443 * compiler enhancement: SIGNUM is now better able to derive the type
3445 * type declarations inside WITH-SLOTS are checked. (reported by
3447 * fixed some bugs revealed by Paul Dietz' test suite:
3448 ** incorrect optimization of TRUNCATE for a positive first
3449 argument and negative second.
3450 ** compiler failure in let-convertion during flushing dead code.
3451 ** compiler failure while deriving type of TRUNCATE on an
3452 interval, containing 0.
3453 ** ASH of a negative bignum by a negative bignum count now returns
3455 ** intersection of CONS types now canonicalizes properly, fixing
3456 inconsistencies in SUBTYPEP.
3458 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3459 * incompatible change: The --disable-debugger command line
3460 option now clobbers the debugger at a more fundamental
3461 level, by redefining #'INVOKE-DEBUGGER instead of by
3462 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3463 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3464 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3465 enter the debugger REPL and then suffer recursive errors
3466 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3467 while under the new system, BREAK in --disable-debugger mode
3468 terminates the system just as an unhandled error would.
3469 * fixed compiler performance when processing loops with a step >1;
3470 * bug fix: DOCUMENTATION now retrieves generic function
3471 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3472 support has been systematized, and now supports the methods
3473 specified by ANSI, along with a default method and a method for
3474 slot documentation. (reported by Nathan Froyd)
3475 * bug fix: effective methods associated with a generic function are
3476 no longer cached over a change of that generic function's method
3477 combination. (reported by Andreas Fuchs)
3478 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3479 names a non-existent directory. (thanks to Andreas Fuchs)
3480 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3481 the PPC platform, lead to stack corruption; this has been fixed.
3482 (reported by Rainer Joswig)
3483 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3484 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3485 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3486 arithmetic in general, is now much more reliable on the PPC
3488 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3489 platform now returns the right answer.
3490 * optimization: restored some effective method precomputation in
3491 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3492 precomputation is now tunable.
3493 * optimization: compiler-internal data structure use has been
3494 reviewed, and changes have been made that should improve the
3495 performance of the compiler by about 20%.
3496 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3497 simple-base-strings and simple-bit-vectors is improved.
3498 * optimization: the optimization of 32-bit logical and arithmetic
3499 functions introduced in version 0.8.3 on the x86 has been
3500 implemented on the mips, ppc and sparc platforms; an
3501 implementation of the same facility, but for 64-bit arithmetic,
3502 has been added for the alpha.
3503 * microoptimization: the compiler is better able to make use of the
3504 x86 LEA instruction for multiplication by constants.
3505 * bug fix: in some situations compiler did not report usage of
3506 generic arithmetic in (SPEED 3) policy.
3507 * bug 145b fix: compiler used wrong type specifier while converting
3508 MEMBER-types to numeric.
3509 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3511 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3512 index argument now works properly on the Alpha platform.
3513 * bug fix: floating point exception treatment on the Alpha platform
3515 * bug fix: FILE-POSITION works much better on string input and
3516 output streams. (thanks to Nikodemus Siivola)
3517 * bug fix: many threading/garbage collection symptoms sorted.
3518 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3519 might be pseudo-atomic.
3520 * internal change: Stopping for GC is now done with signals not
3521 ptrace. GC is now done in whichever thread wanted it, instead of
3523 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3525 * bug fix: result form in DO is not contained in the implicit
3527 * incompatible change: ICR structure is changed; the value part of
3528 CONTINUATION is now called LVAR; corresponding functions are
3529 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3530 * added type deriver for ISQRT (thanks to Robert E. Brown).
3531 * bug fix: better support for loading from the command line when an
3532 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3534 * fixed some bugs revealed by Paul Dietz' test suite:
3535 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3536 ** ROUND and FROUND now give the right answer when given very
3537 small float arguments.
3538 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3540 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3541 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3542 ** LCM should return a non-negative integer.
3543 ** PARSE-INTEGER returned the index of a terminator instead of the
3544 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3545 ** PARSE-INTEGER returned an incorrect index being applied to a
3547 ** LCM with two arguments of 0 returns 0 rather than signalling
3549 ** unsigned addition of a 32-bit constant with the high bit set no
3550 longer causes an internal compiler error on the x86.
3551 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3552 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3553 with negative last argument.
3554 ** byte specifiers with zero size and position no longer cause
3555 an error during type derivation.
3556 ** bignum multiplication on the Alpha platform now returns the
3558 * porting: The system now builds on SuSE AMD64, although it still
3559 generates a 32-bit binary.
3560 * .fasl file incompatibility: The fasl file version number has
3561 been incremented (because of the changes to internal compiler
3562 data structures referred to above).
3564 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3565 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3566 more accurately, on the Darwin kernel running on PowerPC hardware.
3567 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3568 * Compiler code deletion notes now signal a condition of type
3569 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3570 an associated MUFFLE-WARNING restart.
3571 * The compiler now performs limited argument count validation of
3572 constant format strings in FORMAT, and where appropriate in ERROR,
3573 CERROR and WARN. (thanks to Gerd Moellmann)
3574 * New ASDF-INSTALL contrib can be used for automatic download and
3575 installation of third-party Lisp code from CCLAN or other sites
3577 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3578 which forces another thread to execute a function supplied by the
3580 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3581 now accept and act upon their :ELEMENT-TYPE keyword argument.
3582 (reported by Martin Atzmueller, Edi Weitz)
3583 * bug fix: FILE-POSITION now accepts position designators up to
3584 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3585 is the greater. (thanks to Patrik Nordebo)
3586 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3587 Kalle Olavi Niemitalo)
3588 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3589 printable. (reported by Eric Marsden)
3590 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3591 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3592 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3593 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3594 (thanks to Stig Sandoe)
3595 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3596 UNREAD-CHAR now correctly includes the unread character in the
3597 target sequence. (thanks to Gerd Moellmann)
3598 * bug fix in threaded builds: the system can now be suspended and
3599 resumed by shell job control with minimal disruption.
3600 * bug fixes in times and timezones >2038AD
3601 * better handling of "where is GNU make?" problem in build scripts
3602 (thanks to Nikodemus Siivola)
3603 * new optimization: inside a named function any reference to a
3604 function with the same name is considered to be a self-reference;
3605 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3606 optimization quality.
3607 * new optimization on x86: logical functions and + now have
3608 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3609 used when the result is truncated to 32 bits.
3610 * VALUES declaration is partially enabled.
3611 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3612 * fixed some bugs revealed by Paul Dietz' test suite:
3613 ** The system now obeys the constraint imposed by
3614 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3615 types form a lattice under type intersection.
3616 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3617 ** ASSOC now ignores NIL elements in an alist.
3618 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3619 and (1+ MOST-POSITIVE-FIXNUM) answers.
3620 ** The addition of a method with invalid qualifiers to a generic
3621 function does not cause an error to be signalled immediately;
3622 a warning is signalled, and the error is generated only on
3623 calling the generic function.
3624 * changed .fasl file version number, in part to add type codes for
3625 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3626 obscure ANSI requirements
3628 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3629 * fixed bug 148: failure to inline-expand a local function left
3630 garbage, confusing the compiler.
3631 * fixed bugs 3cd: structure slot readers perform type check if the
3632 slot can have an invalid value (i.e. it is either not initialized
3633 or can be written with a less specific slot writer).
3634 * bug fix: the compiler now traps array references to elements off
3635 the end of an array; previously, the bounds checking in some
3636 circumstances could go off-by-one.
3637 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3639 * type declarations for array element types now obey the description
3640 on the CLHS page "Declaration TYPE", as per discussions on
3641 sbcl-help around 2003-05-08. This means that a declaration
3642 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3643 declaration, all references to BAR will be asserted or assumed
3644 (with THE, so dependent on compiler policy) to involve objects of
3645 type FOO. Note that no such declaration is implied in
3646 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3647 * declared types of functions from the "Conditions"
3648 chapter. (reported by Paul Dietz)
3649 * bug fix: CERROR accepts a function as its first argument.
3650 * bug fix: NTH an NTHCDR accept a bignum as index
3651 arguments. (reported by Adam Warner)
3652 * optimization: character compare routines now optimize comparing
3653 against a constant character. (reported by Gilbert Baumann)
3654 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3655 argument now works properly on the MIPS platform.
3656 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3657 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3658 declared to have a functional type, does not cause an error
3660 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3661 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3662 * fixed bug: if last continuation of a deleted block has a
3663 destination, this destination should be deleted too. (reported by
3665 * fixed a bug in the bootstrap process: the host compiler's values
3666 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3667 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3668 test case from Patrik Nordebo)
3669 * improved the ability of the disassembler on the PPC platform to
3670 provide helpful disassembly notes.
3671 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3672 the class in more cases than previously.
3673 * bug fix: FILE-POSITION now understands :START and :END for
3674 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3675 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3676 8) data. (thanks to David Lichteblau)
3677 * bug fix: it is possible to add a method to a generic function
3678 without lambda list.
3679 * bug fix: reader failed to signal END-OF-FILE inside an
3680 object representation. (reported by Nikodemus Siivola)
3681 * fixed some bugs revealed by Paul Dietz' test suite:
3682 ** LAST and [N]BUTLAST should accept a bignum.
3683 ** condition slot accessors are methods.
3684 ** (VECTOR NIL) is a subtype of STRING.
3686 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3687 * minor incompatible change: some nonsensical specialized lambda
3688 lists (used in DEFMETHOD) which were previously ignored now signal
3690 * minor incompatible change: the system is now aware of the types of
3691 variables in the COMMON-LISP package, and will signal errors for
3692 most violations of these type constraints (where previously they
3693 were silently accepted).
3694 * minor incompatible change: COMPILE-FILE now uses the freedom
3695 afforded (ANSI 3.2.2.3) to use derived function types for
3696 functions defined in the same file. This also permits the system
3697 to warn on static type mismatches and function
3698 redefinition. (Currently it does not work with high DEBUG level.)
3699 * minor incompatible change: VALUES declaration is disabled.
3700 * When issuing notes, the compiler now signals a condition of type
3701 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3702 restart for use in user handlers. It is expected that the
3703 COMPILER-NOTE condition will eventually become a condition
3704 supertype to a hierarchy of note types, which will then be
3705 handleable in a similar fashion. However, at the moment, no such
3706 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3707 but it's an implementation detail, not a classification for the
3709 * Changes in type checking closed the following bugs:
3710 ** type checking of unused values (192b, 194d, 203);
3711 ** template selection based on unsafe type assertions (192c, 236);
3712 ** type checking in branches (194bc).
3713 * A short form of VALUES type specifier has ANSI meaning (it has
3714 increased the number of situations when SBCL cannot perform type
3716 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3717 keywords or constants is permissible.
3718 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3719 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3720 classes. (thanks to Antonio Martinez)
3721 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3722 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3723 argument to a pretty-print stream. Instead, it leaves any such
3724 operations to DESCRIBE-OBJECT methods.
3725 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3727 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3728 lambda lists. (thanks to David Lichteblau)
3729 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3730 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3731 (thanks to Gerd Moellmann)
3732 * fixed bug 246: increased compilation speed of long
3733 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3735 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3737 * DEFCONSTANT now throws a condition of type
3738 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3739 constant to a non-EQL value; CONTINUE and ABORT restarts
3740 respectively change and preserve the value.
3741 * fixed bug 63: The code walker, part of the implementation of CLOS,
3742 is now better at handling symbol macros.
3743 * bug fix: There is no longer an internal implementation type named
3744 CL:LENGTH. (reported by Raymond Toy)
3745 * bug fix: In macro-like defining macros/special operators the
3746 implicit block does not enclose the lambda list.
3747 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3748 enclosed in parentheses) are not suitable as type specifiers, and
3749 their use properly signals an error now.
3750 * bug fix: An argument count mismatch for a type specifier in code
3751 being compiled no longer causes an unhandled error at compile
3752 time, but signals a compile-time warning.
3753 * fixed simple vector readable printing
3754 * bug fix: DESCRIBE takes more care over whether the class
3755 precedence list slot of a class is bound before accessing it.
3756 (reported by Markus Krummenacker)
3757 * bug fix: FORMATTER can successfully compile pretty-printer format
3758 strings which use variants of the ~* directive inside.
3759 * bug fix: SEARCH now applies its TEST predicate to the elements of
3760 the arguments in the correct order. (thanks to Wolfhard Buss)
3761 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3762 in type inference. (thanks to Robert E. Brown)
3763 * bug fix: Reading in symbols with an explicit package name of ""
3764 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3765 * fixed some bugs revealed by Paul Dietz' test suite:
3766 ** NIL is now allowed as a structure slot name.
3767 ** Arbitrary numbers, not just REALs, are allowed in certain
3768 circumstances in LOOP for-as-arithmetic clauses.
3769 ** Multiple class redefinitions before slot access no longer
3770 causes a type error.
3771 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3772 association between the name and a class.
3773 ** Generic functions with non-standard method-combination and over
3774 five methods all of which return constants no longer return NIL
3775 after the first few invocations. (thanks to Gerd Moellmann)
3776 ** CALL-NEXT-METHOD with no arguments now passes the original
3777 values of the arguments, even in the presence of assignment.
3778 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3780 ** DISASSEMBLE works with closures and funcallable instances.
3781 ** ADD-METHOD now returns the generic function, not the new method.
3782 ** FIND-METHOD signals an error if the lengths of the specializers
3783 is incompatible with the generic function, even if the ERRORP
3785 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3786 which its argument is a member.
3787 ** DEFCLASS only redefines the class named by its class-name
3788 argument if that name is the proper name of the class;
3789 otherwise, it creates a new class.
3790 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3791 of the UNBOUND-SLOT condition to the name of the slot.
3792 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3793 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3794 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3795 SLOT-MAKUNBOUND in the specified fashion.
3797 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3798 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3799 cross-compilation host. As a consequence, we can now bootstrap our
3800 way up to SBCL starting with a bare gcc toolchain and human-readable
3801 source code (first the source to CLISP, then the source to SBCL).
3802 * A contributed module containing a partial implementation of the
3803 simple-streams interface has been included. (thanks to Rudi
3805 * A contributed module implementing the RFC1321 Message Digest
3806 Algorithm, known as MD5, has been included.
3807 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3808 no longer has any effect, as the code controlled by this feature
3809 has been deleted. (As far as we know, no-one has ever built using
3810 this feature, and its semantics were confused in any case).
3811 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3812 work on conditions (as required by the ANSI specification),
3813 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3814 expected behaviour on conditions. Users should note, however,
3815 that such behaviour is not required by the ANSI specification,
3816 and so use of this behaviour may render their code unportable.
3817 * fixed some bugs revealed by Paul Dietz' test suite:
3818 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3820 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3821 ** SXHASH on condition objects no longer returns NIL.
3822 ** :ALLOCATION :CLASS slots are better treated; their values are
3823 updated on class redefinition, and initforms inherited from
3824 superclasses are applied.
3825 ** REMOVE-METHOD returns its generic function argument even when
3826 no method was removed.
3827 ** SHARED-INITIALIZE now initializes the values of the requested
3828 slots, including those with :ALLOCATION :CLASS.
3829 ** ALLOCATE-INSTANCE now works on structure classes defined via
3830 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3832 ** SLOT-EXISTS-P now works on conditions, as well as structures
3834 ** MAKE-LOAD-FORM now has the required methods on
3835 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3836 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3837 keyword, and now implements the SLOT-NAMES argument.
3838 ** methods with &OPTIONAL arguments no longer allow too many
3839 arguments to be passed in the call without error.
3840 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3841 option is consistent with the required arguments of the generic
3842 function lambda list.
3843 * bug fix: REQUIRE accepts a string designator. (Thanks to
3845 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3846 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3847 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3848 * bug fix: The compiler now checks for duplicated variables in macro
3850 * bug fix: SETQ on globals returns the correct value.
3851 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3852 not a COMPILER-ERROR (followed by some other strange error on
3853 choosing the CONTINUE restart).
3854 * bug fix: make.sh and friends are now more consistent in the way that
3855 they look for GNU "make".
3857 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3858 * experimental native threads support (on x86 Linux >=2.4 only).
3859 This is not compiled in by default: you need to add :SB-THREAD to
3860 the target features. See the "Beyond ANSI" chapter of the manual
3862 * fix for longstanding nonANSIism: The old distinction between
3863 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3864 The return value from CL:FIND-CLASS is now a CLOS class, and
3865 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3866 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3867 * An interface to the MetaObject Protocol, as described in Kiczales,
3868 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3869 MIT Press, 1991, is available from the SB-MOP package.
3870 * incompatible change: the SB-PCL package should now be considered
3871 a private implementation detail, and no longer a semi-private MOP
3873 * minor incompatible change: due to rearrangement for threads, the
3874 control stack and binding stack are now allocated at arbitrary
3875 addresses instead of being hardcoded per-port. Users affected by
3876 this probably have to be doing advanced things with shared
3877 libraries, and will know who they are.
3878 * minor incompatible change: Previously, all --eval forms used were
3879 processed with READ before any of them were processed with EVAL.
3880 Now each --eval form is processed with both READ and EVAL before
3881 the next --eval form is processed. (Thus package operations like
3882 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3883 work as the user might reasonably expect.)
3884 * minor incompatible change: *STANDARD-INPUT* is now only an
3885 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3887 * minor incompatible change: Y-OR-N-P is now character-oriented,
3888 not line oriented. Also, YES-OR-NO-P now works without errors.
3889 (thanks to Antonio Martinez)
3890 * sb-aclrepl module improvements: an integrated inspector, added
3891 repl features, and a bug fix to :trace command.
3892 * Known functions, which cannot be open coded by the backend, are
3893 considered to be able to check types of their arguments. (fixing
3894 a bug report by Nathan J. Froyd)
3895 * fixed a bug in computing method discriminating functions: It is
3896 now possible to define methods specialized on classes which have
3897 forward-referenced superclasses. (thanks to Gerd Moellmann)
3898 * fixed evaluation order in optional entries (reported by Gilbert
3900 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3901 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3902 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3903 required-by-AMOP NAME argument, as well as CLASS and
3904 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3905 * fixed bug 20: DEFMETHOD can define methods using names that are
3906 not the proper names of classes to designate class specializers.
3907 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3908 Unix file descriptors, instead of blowing up. (thanks to Antonio
3910 * Garbage collection refactoring: user-visible change is that a
3911 call to the GC function during WITHOUT-GCING will not do garbage
3912 collection until the end of the WITHOUT-GCING. If you were doing
3913 this you were probably losing anyway.
3914 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3915 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3916 TYPEP the latter but not the former.
3917 * The compiler issues a full WARNING for calls to undefined functions
3918 with names from the CL package.
3919 * MAP-INTO for a vector destination is open coded. (reported by
3920 Brian Downing on c.l.l)
3921 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3922 documentation string.
3923 * fixed some bugs revealed by Paul Dietz' test suite:
3924 ** COPY-ALIST now signals an error if its argument is a dotted
3926 ** Condition slots are now accessed more correctly in the presence
3927 of multiple initargs for a given slot.
3928 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3929 exclude restarts of the same name associated with a different
3931 ** DEFCLASS of forward-referenced classes with another
3932 forward-referenced class in the superclasses list no longer
3934 ** Condition slots are now initialized once each, not multiple
3935 times. (thanks to Gerd Moellmann)
3936 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3938 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3939 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3940 arguments contain duplicated elements.
3941 ** RESTART-CASE understands local macros.
3942 ** RESTART-CASE associates exactly its own restarts with a condition.
3943 ** ENDP in safe mode checks its argument to be of type LIST.
3944 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3945 in question is unbound.
3946 ** Optimized MAKE-INSTANCE functions no longer cause internal
3947 assertion failures in the presence of duplicate initargs.
3948 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3949 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3950 propagated even in the ctor optimized implementation of
3952 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3954 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3955 * a better implementation of SXHASH on (simple) bit vectors,
3956 measured both in execution speed and in distribution of results
3957 over the positive fixnums, has been installed. Likewise, a better
3958 implementation of EQUAL for simple bit vectors is now available.
3959 * fixed CEILING optimization for a divisor of form 2^k.
3960 * fixed bug 240 (emitting extra style warnings "using the lexical
3961 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3962 by Antonio Martinez)
3963 * fixed SXHASH, giving different results for NIL depending on type
3964 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3965 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3966 variable. (found by Rolf Wester)
3967 * SBCL does not ignore type declarations for special
3968 variables. (reported by rif on c.l.l 2003-03-05)
3969 * some bug fixes in contrib/sb-aclrepl/
3970 * fixed some bugs revealed by Paul Dietz' test suite:
3971 ** a bug in the CONS type specifier, whereby the CAR and CDR
3972 types got intertwined, has been fixed;
3973 ** the type system is now able to reason about the interaction
3974 between INTEGER and RATIO types more completely;
3975 ** APPEND, [N]REVERSE and NRECONC check that those their
3976 arguments, which must be proper lists, are really so;
3977 ** An array specialized to be unable to hold elements has been
3978 implemented, as required -- yes, really -- by ANSI;
3979 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3980 on malformed property lists;
3982 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3983 * incompatible packaging change: in line with Unix convention,
3984 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3985 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3986 * REQUIRE and PROVIDE are now optionally capable of doing something
3987 useful. See the documentation string for REQUIRE.
3988 * infrastructure for a managed SBCL contrib system: contributed
3989 modules in this release include:
3990 ** the ASDF system definition facility;
3991 ** an interface to the BSD Sockets API;
3992 ** an ACL-like convenience interface to the repl;
3993 (thanks to Kevin Rosenberg)
3994 ** an implementation of ROTATE-BYTE, with efficient implementation
3996 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3997 gives a closer approximation to the right answer than previously.
3998 (thanks to Raymond Toy)
3999 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4000 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4001 optional environment arguments, as required by ANSI.
4002 * fixed bugs in other functions taking environment objects, allowing
4003 calls with an explicit NIL environment argument to be compiled
4005 * fixed bug 228: primary return values from
4006 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4007 COMPILE or FUNCTION.
4008 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4009 :TYPE will no longer signal errors on innocuous objects.
4010 * fixed bug 231b: SETQ is better at respecting type declarations in
4011 the lexical environment.
4012 * fixed a bug in DEFCLASS: classes named by symbols with no or
4013 unprintable packages can now be defined.
4014 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4015 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4016 * fixed compiler failure related to checking types of functions.
4017 (reported by Robert E. Brown)
4018 * the compiler is now much more consistent in its error-checking
4019 treatment of bounding index arguments to sequence functions: in
4020 (SAFETY 3) code, errors will be signalled in almost all cases if
4021 invalid sequence bounding indices are passed to functions defined
4022 by ANSI to operate on sequences.
4023 * fixed a bug in the build procedure: documentation of SBCL-specific
4024 packages is now preserved and available in the final Lisp image.
4025 * lifted FDEFINITION lookup out of loops in the implementation of
4026 many list operations. (thanks to Robert E. Brown)
4027 * fixed a bug in the reader: the #n# reader macro now works for
4028 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4029 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4030 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4031 E. Brown and Tony Martinez respectively)
4032 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4033 SLOT-BOUNDP: in particular, it is now able to optimize them much
4034 better, and is now not vulnerable to having packages renamed.
4035 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4036 always called when a slot is not present in an instance. (thanks
4038 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4039 longer signal an error on unreading a character following EOF on
4040 the previous constituent stream. (thanks to Tony Martinez)
4041 * fixed some bugs revealed by Paul Dietz' test suite:
4042 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4043 not just nonnegative fixnums;
4044 ** the logical bit-array operators such as BIT-AND now accept an
4045 explicit NIL for their "opt-arg" argument (to indicate a
4046 freshly-consed result bit-array);
4047 ** ELT now signals an error on an invalid sequence index in safe
4049 ** the type system is now cleverer about negations of numeric
4050 types, and consequently understands the BIGNUM and RATIO types
4052 ** the type system is now cleverer about the interaction between
4053 INTEGER and RATIO types: while bugs still remain, many more
4054 cases are accurately computed;
4055 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4056 if it is in the last clause;
4057 ** CONSTANTLY now correctly returns a side-effect-free function in
4059 ** DECLARE is no longer treated as a special-operator; in
4060 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4061 * incremented fasl file version number due to the change in the
4062 DEFSTRUCT-SLOT-DESCRIPTION structure.
4064 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4065 * minor incompatible change: code processed by the "interpreter" or
4066 EVAL now has a compilation optimization policy of (DEBUG 2)
4067 (changed from (DEBUG 1)) to improve debuggability of interactive
4068 development, and to allow the use of the debug RETURN command in
4070 * an experimental implementation of the RETURN command for the
4071 debugger has been included. (thanks to Frederik Kuivinen)
4072 * fixed bug 62: constraints were not propagated into a loop.
4073 * fixed bug in embedded calls of SORT (reported and investigated by
4075 * fixed some bugs revealed by Paul Dietz' test suite:
4076 ** printing and reading of arrays with some dimensions having
4077 length 0 (thanks to Gerd Moellmann);
4078 ** BOA constructor with &AUX argument without a default value does
4079 not cause a type error;
4080 ** CONSTANTP now returns true for all self-evaluating objects.
4082 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4083 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4084 accessors that are related by inheritance, as specified in the
4085 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4086 Valtteri Vuorikoski)
4087 * The compiler is now able to inline functions that were defined in
4088 a complex lexical environment (e.g. inside a MACROLET).
4089 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4091 * Support for the upcoming FreeBSD-5.0 release has been included.
4092 (thanks to Dag-Erling Smorgrav)
4093 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4094 effect when it is not in a toplevel context.
4095 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4096 stand a better chance of being correct. (thanks to Gerd
4098 * fixed bug in COERCE, which now signals an error on coercing a
4099 rational to a bounded real type which excludes the expected
4101 * The compiler is now able to derive types more accurately from the
4102 COERCE and COMPILE functions.
4103 * fixed bug 223: functional binding is considered to be constant
4104 only for symbols in the CL package.
4105 * fixed bug 231: SETQ did not check the type of a variable being set
4106 (reported by Robert E. Brown)
4107 * A new optimization for MAKE-INSTANCE has been included, fixing
4108 various bugs (including relating to :ALLOCATION :CLASS slots and
4109 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4111 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4112 ** As required by ANSI, LOOP now disallows anonymous collection
4113 clauses such as COLLECT I in conjunction with aggregate boolean
4114 clauses such as THEREIS (= I 1);
4115 ** LOOP now signals an error when any variable is reused in the
4116 same loop (including the potentially useful construct analogous
4117 to WITH A = 1 WITH A = (1+ A);
4118 ** IT is only a special loop symbol within the first clause of a
4119 conditional loop clause;
4120 ** LOOP with a typed iteration variable over a hashtable now
4121 signals a type error iff it should.
4122 * fixed some other bugs revealed by Paul Dietz' test suite:
4123 ** FILE-STREAM now names the class previously known as FD-STREAM;
4124 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4125 argument) no longer signals an error;
4126 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4127 of the slot symbol, rather than using the current package
4128 ((:CONC-NAME "") continues to intern the slot's name in the
4130 * incremented fasl file version number, because of the incompatible
4131 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4132 of the new implementation of DEFINE-COMPILER-MACRO.
4134 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4135 * Support for building SBCL for MIPS platforms running in
4136 little-endian mode has now been checked in, and basic
4137 functionality on said platforms verified.
4138 * minor incompatible change: PCL now records the pathname of a file
4139 in which methods and the like are defined, rather than its
4141 * minor incompatible change: TRUENAME now considers the truename of
4142 a file naming a directory to be the pathname with :DIRECTORY
4143 component indicating that directory.
4144 * minor incompatible change: a NAMED clause in the extended form of
4145 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4146 reason for the previous behaviour is unclear.
4147 * more systematization and improvement of CLOS and MOP conformance
4148 in PCL (thanks to Gerd Moellman and Pierre Mai):
4149 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4151 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4152 primary methods with no specializers;
4153 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4155 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4156 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4157 FORWARD-REFERENCED-CLASSes; error reporting on
4158 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4160 ** SXHASH on CLOS instances now uses a slot internal to the
4161 instance to return different numbers on distinct instances,
4162 while preserving the same return value through invocations of
4164 ** DEFMETHOD signals errors when methods with longer incongruent
4165 lambda lists are added to generic functions;
4166 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4167 CLASS, as specified in AMOP;
4168 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4169 on the order returned by the primary method for classes of
4170 class STANDARD-CLASS;
4171 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4172 * fixed some bugs shown by Paul Dietz' test suite:
4173 ** DOLIST puts its body in TAGBODY;
4174 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4176 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4177 value producing form;
4178 ** if more variables are given to PROGV than values, extra
4179 variables are bound and made to have no value;
4180 ** NSUBSTITUTE on list arguments gets the right answer with
4182 ** ELT signals an error of type TYPE-ERROR when the index argument
4183 is not a valid sequence index;
4184 ** LOOP signals (at macroexpansion time) an error of type
4185 PROGRAM-ERROR when duplicate variable names are found;
4186 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4187 ** FUNCALL of special-operators now cause an error of type
4189 ** PSETQ now works as required in the presence of side-effecting
4190 symbol-macro places;
4191 ** NCONC accepts any object as its last argument;
4192 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4194 ** loop-for-as-package does not require a package to be explicitely
4196 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4198 * fixed bug 166: compiler preserves "there is a way to go"
4199 invariant when deleting code.
4200 * fixed bug 172: macro lambda lists with required arguments after
4201 &REST arguments now cause an error to be signalled. (thanks to
4203 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4204 bug. (thanks to Matthew Danish)
4205 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4207 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4208 arguments are lexically rebound. (thanks to Gerd Moellmann and
4210 * fixed bug 194: error messages are now more informative when there
4211 is no primary method applicable in a call to a generic
4212 function. (thanks to Gerd Moellmann)
4213 * fixed bug in command line argument checking (thanks to Julian
4215 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4216 (thanks to Matthew Danish)
4217 * incremented fasl file version number, because of the
4218 SXHASH-related changes in the layout of CLOS data structures
4220 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4221 * minor incompatible change: The runtime (the Unix executable named
4222 "sbcl") is now much pickier about the .core files it will load.
4223 Essentially it now requires .core files to descend from the same
4224 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4225 as the runtime does. (The intent is to prevent the crashes which
4226 can occur, and which can even be reported as mysterious failures,
4227 when people patch the sources or change the build parameters
4228 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4229 sbcl and .core files.)
4230 * fixed bug: VALUES-LIST is no longer optimized away.
4231 * fixed bug 142: The FFI conversion of C string values to Lisp
4232 string values no longer conses excessively. (thanks to Nathan
4233 Froyd porting Raymond Toy's fix to CMU CL)
4234 * began to systematize and improve MOP conformance in PCL (thanks to
4235 Nathan Froyd, Gerd Moellman and Pierre Mai):
4236 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4238 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4239 ** FINALIZE-INHERITANCE is now called on class finalization;
4240 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4241 argument precedence order.
4242 * fixed bug 202: The compiler no longer fails on functions whose
4243 derived types contradict their declared type.
4244 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4245 so it can be non-toplevel.
4246 * The fasl file version number has changed (because of the new
4247 implementation of DEFMACRO).
4248 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4249 safe code, that any length requirement by their type-specifier
4250 argument is valid. The exceptions to this are described in bug
4252 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4253 functions now check the types of their inputs as required by ANSI.
4254 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4255 introduced symbol is DECLAREd to be SPECIAL.
4256 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4257 * fixed bug: :COUNT argument to sequence functions may be negative
4258 * fixed bug: body of DO-SYMBOLS may contain declarations
4259 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4260 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4261 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4262 symbol macro only once
4263 * fixed printing of call frame when argument list is unavailable
4264 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4265 * compiler no longer signals WARNING on unknown keyword
4268 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4269 * A beta-quality port to the mips architecture running Linux,
4270 based on the old CMUCL backend, has been made. It has been tested
4271 on a big-endian kernel, and works sufficiently well to be able to
4272 rebuild itself; it has not been tested in little-endian mode.
4273 * fixed an inconsistency between gencgc.c and purify.c which made
4274 dumping/loading .core files unreliable
4275 * fixed bug 120a: The compiler now deals correctly with IFs where
4276 the consequent is the same as the alternative, instead of
4277 misderiving the return type. (thanks to Alexey Dejneka)
4278 * fixed bug 113: Logical pathnames are now dumpable (the logical
4279 host is resolved at load-time, throwing an error if it is not
4281 * fixed bug 174: FORMAT's error message is slightly clearer when a
4282 non-printing character is used in a format directive.
4283 * fixed several bugs in compiler checking of type declarations, i.e.
4284 violations of the Python "declarations are assertions" principle
4285 (thanks to Alexey Dejneka)
4286 * fixed several bugs in PCL's error checking (thanks to Gerd
4288 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4290 * fixed bug in compilation of functions as first class values
4291 (thanks to Antonio Martinez-Shotton)
4292 * The compiler's handling TYPE-ERRORs which it can prove will
4293 inevitably happen at runtime has been cleaned up and corrected
4294 in several ways. (thanks to Alexey Dejneka)
4295 * improved argument type checking for various basic arithmetic
4296 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4297 lavished on them in the past that they can be compiled in many
4298 ways in different special cases
4299 * fixed bug 181: compiler checks validity of user supplied type
4301 * cleaned up code flushing in optimization: Function calls which
4302 should signal errors for safety purposes (e.g. which ANSI says
4303 should signal errors when their arguments are of incorrect type)
4304 are no longer optimized away.
4305 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4306 * incremented fasl file version number, because changes in the
4307 implementation of sequence functions like COERCE caused
4308 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4309 in old inline expansions) to become undefined. (Actually these
4310 changes were later undone, so we might very well be binary
4311 compatible with 0.7.7 after all, but leaving the version number
4312 incremented seemed like the simplest and most conservative
4315 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4316 * An alpha-quality port to the parisc architecture running Linux,
4317 based on the old CMUCL backend, has been made. This, even more so
4318 than the other backends, should be considered still a work in
4319 progress; known problems include that the Linux kernel in 64-bit
4320 mode does not propagate the correct sigcontext structure to
4321 userspace, and consequently SBCL on a parisc64 kernel will not
4323 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4324 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4325 suppressed.) Also now that the compiler is looking at declarations
4326 in the environment, it checks optimization declarations as well,
4327 and suppresses inlining when (> DEBUG SPEED).
4328 * More fixes have been made to treatment of floating point exception
4329 treatment and other Unix signals. In particular, floating point
4330 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4331 * The detection and handling of control stack exhaustion (infinite
4332 or very deeply nested recursion) has changed. Stack exhaustion
4333 detection is now done by write-protecting pages at the OS level
4334 and applies at all optimization settings; when found, a
4335 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4336 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4337 be caught using IGNORE-ERRORS.
4338 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4339 correctly when transforming recursive LABELS functions to LETs.
4340 (thanks to Alexey Dejneka)
4341 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4342 that are names of constants or global variables.
4343 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4344 alien routines with docstrings.
4345 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4346 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4348 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4349 (thanks to Eric Marsden)
4350 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4351 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4352 * Bug fix: The SPARC backend can now compile functions involving
4353 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4354 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4355 to a functions expecting a PATHNAME-DESIGNATOR.
4356 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4357 lambda lists. (thanks to Alexey Dejneka)
4358 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4359 functions so that EXPORTing the name of the class doesn't cause
4360 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4361 to Antonio Martinez for reporting this)
4362 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4363 constant-folded without failing an assertion. (thanks to Einar
4364 Floystad Dorum for reporting this)
4365 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4366 types are now dealt with more correctly by the compiler.
4367 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4368 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4369 behaviour analogous to RENAME-FILE. This puts its behaviour more
4370 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4372 * The fasl file version number has changed again. (because of the
4373 bug fix involving the names of PCL MAKE-INSTANCE functions)
4375 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4376 * bug fix: Floating point exceptions are treated much more
4377 consistently on the x86/Linux and PPC/Linux platforms.
4378 * Array initialization with :INITIAL-ELEMENT is now much faster for
4379 cases when the compiler cannot open code the array creation, but
4380 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4381 array accesses have also seen a speed increase.
4382 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4383 specified. (This was at the root of some bad interactions between
4384 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4386 * bug fix: Internal error arguments for undefined functions are now
4387 computed correctly on the PPC/Linux platform.
4388 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4389 Raymond Toy's patch for CMU CL)
4390 * Support for the Solaris 9 operating environment has been included
4391 (thanks to Daniel Merritt)
4392 * A very ugly but hopefully complete draft of the missing FFI chapter
4393 of the manual has been created by reformatting the corresponding
4394 CMU CL manual chapter into (currently very ugly and incoherent)
4395 DocBook and bringing it up to date for SBCL behavior. Thus, the
4396 manual is now essentially complete, at least by my extreme
4397 once-and-only-once standards, whereby it's acceptable to refer to
4398 the doc strings of SB-EXT functions as the primary documentation.
4399 * The fasl file version number has changed again, due to cleanup of
4400 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4401 is no longer a static symbol.)
4403 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4404 * SBCL now builds with OpenMCL (version 0.12) as the
4405 cross-compilation host; also, more progress has been made toward
4406 bootstrapping under CLISP.
4407 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4409 * bug 158 fixed: The compiler can now deal with integer loop
4410 increments different from 1; fixing this turned out also to fix
4412 * bug 169 fixed: no more bogus warnings about using lexical bindings
4413 despite the presence of perfectly good SPECIAL declarations (thanks
4414 to David Lichteblau)
4415 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4416 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4417 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4419 * bug 180 fixed: Method combination specifications no longer ignore
4420 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4421 * bug fix: Structure type predicate functions now check their argument
4422 count as they should.
4423 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4424 correctly. (thanks to Pierre Mai)
4425 * minor incompatible change: The --noprogrammer option is deprecated
4426 in favor of the new --disable-debugger option, which is very similar.
4427 (The major difference is that it takes effect at a slightly different
4428 time at startup, causing handling of errors in --sysinit and
4429 --userinit files will be affected differently.) The
4430 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4431 been added to allow this functionality to be controlled from ordinary
4432 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4433 maintainers, who might want to run non-interactive scripts to
4434 build SBCL cores which will later be used interactively.)
4435 * minor incompatible change: The LOAD function no longer, when given
4436 a wild pathname to load, loads all files matching that pathname.
4437 Instead, an error of type FILE-ERROR is signalled.
4439 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4440 * bug 147 fixed: The compiler preserves its block link/count
4441 invariants more correctly now so that it doesn't crash. (thanks
4443 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4445 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4446 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4447 no-value-for-this-character as NIL (as specified by ANSI).
4448 * HOST-NAMESTRING on physical pathnames now returns a string that is
4449 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4450 (thanks to Christophe Rhodes)
4451 * The Alpha port handles icache flushing more correctly. (thanks to
4453 * More progress has been made toward bootstrapping under CLISP. (thanks
4454 to Christophe Rhodes)
4455 * The fasl file format has changed again, because dynamic loading
4456 on OpenBSD (which has non-ELF object files) motivated some cleanups
4457 in the way that foreign symbols are transformed and passed around.
4458 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4459 is no longer treated as whitespace by the reader, but instead as
4460 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4461 |A
\7fB|, instead of A as it used to.
4463 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4464 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4465 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4466 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4467 this as of 0.7.1.45, but was left out of the previous news section
4468 (thanks to Dan Barlow)
4469 * SBCL now runs on the Solaris operating system on SPARC architectures
4470 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4471 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4472 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4473 * SPARC backend cleanups, allowing builds of cores optimized for V8
4474 and V9 SPARCS, and also emission of code targeted to a particular
4475 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4477 * SBCL is closer to bootstrapping under CLISP, thanks to various
4478 fixes by Christophe Rhodes.
4479 * The fasl file format has changed again, to allow the compiler's
4480 INFO database to support symbol macros.
4481 * The user manual (in doc/) is formatted into HTML more nicely.
4482 (thanks to coreythomas)
4483 * The system is smarter about SUBTYPEP relationships, especially
4484 those involving NOT types (including types such as ATOM which are
4485 represented internally using NOT types). Thus SUBTYPEP is less
4486 likely to return (VALUES NIL NIL) in general, and in particular
4487 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4489 * The fasl file format has changed again, because the internal
4490 representation of types now includes a new slot to support the new
4491 SUBTYPEP-of-NOT-types logic.
4492 * (not a change in the main branch of SBCL, but a related prototype
4493 which can hopefully be merged into the main branch of SBCL in the
4494 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4495 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4496 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4497 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4498 dispatch macro character combinations. (thanks to Alexey Dejneka)
4499 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4500 that superficially look like logical namestrings correctly.
4501 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4503 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4504 default supplied-p) for &optional and &key arguments. (thanks to
4507 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4508 * incompatible change: The compiler is now less aggressive about
4509 tail call optimization, doing it only when (> SPACE DEBUG) or
4510 (> SPEED DEBUG). (This is an incompatible change because there are
4511 programs which relied on the old CMU-CL-style behavior to optimize
4512 away their unbounded recursion which will now die of stack overflow.)
4513 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4514 for non-GENCGC systems has been increased to 20M (since that
4515 seems much closer to the likely performance optimum for modern
4516 systems than the old 4M value was)
4517 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4518 and *DEBUG-PRINT-LEVEL*
4519 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4520 of CMU CL's support for SPARC, and various endianness and other
4521 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4522 * new syntactic sugar for the Unix command line: --load foo.bar is now
4523 an alternate notation for --eval '(load "foo.bar")'.
4525 ** The system now detects stack overflow and handles it gracefully,
4526 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4527 optimization settings. (This is a good thing in general, and
4528 its introduction in this version should be particularly timely
4529 for anyone whose code fails because of suppression of tail
4531 ** The system now hunts for the C variable "environ" in a more
4532 devious way, to avoid segfaults when the C library version differs
4533 between compile time and run time. (thanks to Christophe Rhodes)
4534 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4535 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4536 ** The compiler no longer issues bogus style warnings for undefined
4537 classes in the same source file as the DEFCLASSes which defined
4538 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4540 ** fixes in CONDITION class precedence list for undefined function
4541 errors (thanks to Alexei Dejneka)
4542 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4543 correctly. (thanks to Dan Barlow)
4544 ** portability fixes aiming at bootstrapping under CLISP (thanks
4545 to Dave McDonald and Christophe Rhodes)
4546 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4547 ** fixes in type translation and and type inference (thanks to
4549 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4550 ** various fixes in the new ports (thanks to Dan Barlow)
4551 * several changes related to debugging:
4552 ** suppression of tail recursion, as noted above
4553 ** stack overflow detection, as noted above
4554 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4555 is now the default. (For some time encapsulation has been more
4556 reliable than the breakpoint-based :ENCAPSULATE NIL
4557 implementation, at least on X86 systems; and I just noticed that
4558 encapsulation also seems closer to the spirit of the ANSI
4561 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4563 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4564 up properly again. (There was a packaging bug in 0.7.0 which
4565 left their definitions in SB-SYS::LOAD-FOREIGN and
4566 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4567 vital for most things which interface to C-level interfaces,
4568 like extensions working with sockets or databases or
4569 Perl-compatible regexes or whatever, and the need to fix
4570 this bug is the main reason that 0.7.1 was released so
4572 ** DEFGENERIC is now choosier about the methods it redefines, so that
4573 reLOADing a previously-LOADed file containing DEFGENERICs does
4574 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4575 cycle now works as it should. (thanks to Alexey Dejneka)
4576 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4577 fixed by Christophe Rhodes. (He actually submitted this patch
4578 months ago, and I delayed until after 0.7.0.)
4579 ** Bug 111 (internal compiler confusion about runtime checks on
4580 FUNCTION types) was fixed by Alexey Dejneka.
4581 * Some internal cleanups (getting rid of variables which aren't
4582 needed now that the byte interpreter is gone) caused the fasl
4583 file format number to change again.
4585 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4586 * major incompatible change: The default fasl file extension, i.e. the
4587 default extension for files produced by COMPILE-FILE, has changed
4588 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4590 ** There are many changes in the implementation of the compiler.
4591 SBCL is now essentially a compiler-only implementation of ANSI
4592 Common Lisp. EVAL still "interprets" a few special cases, but
4593 almost all the interesting cases are handled by creating
4594 a LAMBDA expression, calling COMPILE on it, then calling
4595 FUNCALL on the result.
4596 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4597 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4598 Since the code is newer, there might still be some new bugs
4599 (though not as many as before Martin Atzmueller's fixes:-). But
4600 the new code is substantially simpler and clearer, and hopefully
4601 any remaining bugs will be simpler, less fundamental, and more
4602 fixable then the bugs in the old code.
4603 ** The revised compiler is still a little unsteady on its feet.
4605 *** The debugging information it produces (particularly the names
4606 of FUNCTION objects) is sometimes much less useful than what
4607 the old compiler produced.
4608 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4609 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4610 within a MACROLET) has been temporarily weakened.
4611 ** There are new compiler optimizations for various functions:
4612 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4613 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4614 *** the math functions TRUNCATE, FLOOR, and CEILING
4615 *** the function-of-all-trades COERCE
4616 Mostly these should be transparent, but there's one
4617 potentially-annoying problem (bug 117): when the compiler
4618 inline-expands a function and does type analysis on the result,
4619 it can create control paths which have type mismatches, and
4620 when it can't prove that those control paths aren't taken,
4621 it will issue WARNINGs about the type mismatches. This is
4622 a particular problem in practice for the new sequence functions.
4623 It's not clear how this should be fixed, and for now, a
4624 workaround is given in the entry for 117 in the BUGS file.
4625 ** (Because of the interaction between the two previous items --
4626 occasional inlining problems and new inline expansions -- some
4627 of the new sequence function optimizations won't really kick in
4628 completely until debugging information, and then inlining, are
4629 straightened out in some future version.)
4630 * minor incompatible changes:
4631 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4632 DIRECTORY no longer implicitly promotes NIL slots of its
4633 pathname argument to :WILD. In particular, when you ask for the
4634 contents of a directory (which you used to be able to do without
4635 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4636 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4637 ** changes in behavior that ANSI explicitly defines to be
4638 implementation dependent:
4639 *** The new compiler-only implementation still conforms with ANSI,
4640 but acts a little different than before. Besides the obvious
4641 changes in performance tradeoffs (that the cost per form passed
4642 to EVAL has gone up, and the cost per form executed by EVAL
4643 has gone down), the behavior of the system changes a little
4644 because there are no longer any interpreted function objects.
4645 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4646 e.g. doing COMPILE on the output of interactive DEFUN is
4648 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4650 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4651 has changed from (:CL) to NIL.
4652 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4653 e.g. #\Newline and #\Tab, don't have names specified in the
4654 ANSI Common Lisp standard, is now based on their ASCII symbolic
4655 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4656 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4657 are no longer used for output.
4658 ** changes in internal implementation constants:
4659 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4660 4 million. (If your application spends a lot of time GCing and
4661 you have a lot of RAM, you might want to experiment with
4662 increasing it even more.)
4663 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4664 However, almost all old code should still continue to work without
4665 immediate update, as SB-C-CALL is now a (deprecated) nickname
4667 ** Old operator names in the style DEF-FOO are now deprecated in
4668 favor of new corresponding names DEFINE-FOO, for consistency with
4669 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4670 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4671 internal symbols, but a few supported extensions like
4672 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4673 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4674 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4675 etc. as you get deeper into recursive calls to the debugger
4676 command loop, instead of the old "5]", "5]]", "5]]]"
4677 sequence. (I was motivated to do this when squabbles between
4678 ILISP and SBCL left me very deeply nested in the debugger. In the
4679 short term, this change will probably provoke more ILISP/SBCL
4680 squabbles, but hopefully it will be an improvement in the long run.)
4681 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4682 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4683 function, since declaiming return types involving aliens is
4684 (1) annoyingly messy to do by hand and (2) vital to efficient
4685 compilation of code which calls such functions.
4686 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4687 longer reexported by the SB-EXT package. They're solely useful
4688 for alien code, so it seems more logical that you should get
4689 them from the SB-ALIEN package, not in SB-EXT.
4690 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4691 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4692 features. Instead, the code that they used to control is always
4693 built into the system.
4694 * many other bug fixes
4695 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4696 advantage of the new EVAL-WHEN stuff and to clean them up in
4697 general, and they are now more ANSI-compliant in a number of
4698 ways. Martin Atzmueller is responsible for a lot of this.
4699 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4701 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4702 *** correct ERROR type for various file operations
4703 *** some fixes for Lisp streams
4704 *** DEFMETHOD syntax checking
4705 *** changing old weird representation of debug information as
4706 strings (which, among their other deficiencies, don't transform
4707 correctly when you rename packages, and don't change their
4708 print representation when you change things like *PACKAGE*
4709 and *PRINT-LENGTH*) to symbols and lists of symbols
4710 He also made several improvements and fixed several bugs in DESCRIBE.
4711 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4713 *** misbehavior of WRITE-STRING/WRITE-LINE
4714 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4715 and several other LOOP problems as well
4716 *** DIRECTORY when similar filenames are present
4717 *** DEFGENERIC with :METHOD options
4718 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4719 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4720 *** argument ordering in FIND with :TEST option
4721 *** mishandled package designator argument in APROPOS-LIST
4722 *** various problems in the backquote readmacro
4723 *** a bug in APROPOS
4724 *** probably some others that I'm not describing very well here,
4725 since the CVS log documents them by reference to sbcl-devel
4726 messages, and the SourceForge archives aren't working well.:-(
4727 ** Dan Barlow improved the Alpha port (and is making progress on the
4728 PPC port, for those of you who think different).
4729 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4730 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4731 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4732 continues to work on the SPARC port (for those of you in a position
4733 to look down upon our little PC-compatible boxes from a great height).
4734 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4735 and uses that copy, rather than the current dynamic value, when
4736 it's trying to decide whether to truncate output. Thus e.g.
4737 (let ((*print-lines* 50))
4738 (pprint-logical-block (stream nil)
4740 (let ((*print-lines* 8))
4741 (print (aref possiblybigthings i) stream)))))
4742 should now truncate the logical block only at 50 lines, instead of
4743 often truncating it at 8 lines, as it did before.
4744 * The doc/cmucl/ directory, containing old CMU CL documentation
4745 from the time of the fork, is no longer part of the base system.
4746 SourceForge has shut down its anonymous FTP service, and with it
4747 my original plan for distributing the old CMU CL documentation
4748 there. For now, if you need these files you can download an old
4749 SBCL source release and extract them from it.
4750 * The fasl file version number changed again, for dozens of reasons,
4751 some of which are apparent above.
4753 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4754 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4755 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4756 patch, so that DISASSEMBLE output is much nicer.
4757 * The code in the SB-PROFILE package now seems reasonably stable.
4758 I still haven't decided what the final interface should look like
4759 (I'd like PROFILE to interact cleanly with TRACE, since both
4760 facilities use function encapsulation) but if you have a need
4761 for profiling now, you can probably use it successfully with
4762 the current CMU-CL-style interface.
4763 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4764 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4765 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4766 link now returns the dangling link itself, and for similar
4767 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4768 link itself. (In these cases the old code signalled an error and
4769 looped endlessly, respectively.) Thus, DIRECTORY now works even
4770 in the presence of dangling and cyclic symbolic links.
4771 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4772 is now a supported extension again, since the consensus on
4773 sbcl-devel was that it can be useful for ordinary development
4774 work, not just for debugging SBCL itself.
4775 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4776 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4777 that currently-defined functions might be redefined later with
4778 different return types.
4779 * Hash tables can be printed readably, as inspired by CMU CL code
4780 of Eric Marsden and SBCL code of Martin Atzmueller.
4781 * better error handling in CLOS method combination, thanks to
4782 Martin Atzmueller porting Pierre Mai's CMU CL patches
4783 * more overflow fixes for >16Mbyte I/O buffers
4784 * A bug in READ has been fixed, so that now a single Ctrl-D
4785 character suffices to cause end-of-file on character streams.
4786 In particular, now you only need one Ctrl-D at the command
4787 line (not two) to exit SBCL.
4788 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4790 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4791 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4792 does the right thing.
4793 * The implementation of some type tests, especially for CONDITION
4794 types, is now tidier and maybe faster, due to CMU CL code
4795 originally by Douglas Crosher, ported by Martin Atzmueller.
4796 * Some math functions have been fixed, and there are new
4797 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4798 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4799 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4800 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4801 likely to be built into sbcl-0.7.0.)
4802 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4803 CL, ported to SBCL by Martin Atzmueller)
4804 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4805 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4806 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4807 * There's a new slam.sh hack to shorten the edit/compile/debug
4808 cycle for low-level changes to SBCL itself, and a new
4809 :SB-AFTER-XC-CORE target feature to control the generation of
4810 the after-xc.core file needed by slam.sh.
4811 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4812 COMPILE-FILE is no longer supported, so that now every function
4813 gets an entry point, so that block compilation looks a little
4814 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4815 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4816 returns the number of bytes consed since the system started,
4817 rather than the number consed since the first time the function
4818 was called. (The new definition parallels ANSI functions like
4819 CL:GET-INTERNAL-RUN-TIME.)
4820 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4821 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4822 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4823 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4824 * Fasl file version numbers are now independent of the target CPU,
4825 since historically most system changes which required version
4826 number changes have affected all CPUs equally. Similarly,
4827 the byte fasl file version is now equal to the ordinary
4830 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4831 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4832 is no longer recognized. I apologize for this, because it was
4833 listed in SB-EXT as a supported extension, but I found that
4834 its existing behavior was poorly specified, as well as incorrectly
4835 specified, and it looked like too much of a mess to straighten it
4836 out. I have enough on my hands trying to get ANSI stuff to work..
4837 * many patches ported from CMU CL by Martin Atzmueller, with
4838 half a dozen bug fixes in pretty-printing and the debugger, and
4839 half a dozen others elsewhere
4840 * fixed bug 13: Floating point infinities are now supported again.
4841 They might still be a little bit flaky, but thanks to bug reports
4842 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4843 as flaky as they were.
4844 * The --noprogrammer command line option is now supported. (Its
4845 behavior is slightly different in detail from what the old man
4846 page claimed it would do, but it's still appropriate under the
4847 same circumstances that the man page talks about.)
4848 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4849 are now supported, and enabled by default. Thus, the compiler can
4850 handle many floating point and complex operations much less
4851 inefficiently. (Thus e.g. you can implement a complex FFT
4853 * The compiler now detects type mismatches between DECLAIM FTYPE
4854 and DEFUN better, and implements CHECK-TYPE more correctly, and
4855 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4856 thanks to patches from Martin Atzmueller.
4857 * various fixes to make the cross-compiler more portable to
4858 ANSI-conforming-but-different cross-compilation hosts (notably
4859 Lispworks for Windows, following bug reports from Arthur Lemmens)
4860 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4861 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4862 fixed thanks to Pierre Mai's CMU CL patches.
4863 * fixes to keep the system from overflowing internal counters when
4864 it tries to use i/o buffers larger than 16M bytes
4865 * fixed bug 45a: Various internal functions required to support
4866 complex special functions have been merged from CMU CL sources.
4867 (When I was first setting up SBCL, I misunderstood a compile-time
4868 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4869 * improved support for type intersection and union, fixing bug 12
4870 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4871 more obscure bugs as well
4872 * some steps toward byte-compiling non-performance-critical
4873 parts of the system, courtesy of patches from Martin Atzmueller
4874 * Christophe Rhodes has made some debian packages of sbcl at
4875 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4876 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4877 stable, but are nonetheless usable. When he's ready, I'd be happy
4878 to add them to the SourceForge "File Releases" section. (And if
4879 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4880 * new fasl file format version number (because of changes in
4881 internal representation of (OR ..) types to accommodate the new
4882 support for (AND ..) types, among other things)
4884 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4885 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4887 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4889 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4890 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4891 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4892 * DESCRIBE now works on structure objects again.
4893 * Most function call argument type mismatches are now handled as
4894 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4895 know whether the function will be redefined before the call is
4896 executed. (The compiler could flag local calls with full WARNINGs,
4897 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4898 it doesn't keep track of enough information to know whether calls
4899 are local in this sense.)
4900 * Compiler output is now more verbose, with messages truncated
4901 later than before. (There should be some supported way for users
4902 to override the default verbosity, but I haven't decided how to
4903 provide it yet, so this behavior is still controlled by the internal
4904 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4905 src/compiler/ir1util.lisp.)
4906 * Fasl file format version numbers have increased again, because
4907 support for the Gray streams extension changes the layout of the
4908 system's STREAM objects.
4909 * The Gray subclassable streams extension now works, thanks to a
4910 patch from Martin Atzmueller.
4911 * The full LOAD-FOREIGN extension (not just the primitive
4912 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4913 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4914 but like most other programs, it defaults to copying the Unix
4915 environment from the original process instead of starting the
4916 new process in an empty environment.
4917 * Extensions which manipulate the Unix environment now support
4918 an :ENVIRONMENT keyword option which doesn't smash case or
4919 do other bad things. The CMU-CL-style :ENV option is retained
4920 for porting convenience.
4921 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4922 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4924 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4926 * A patch from Martin Atzmueller seems to have solved the SIGINT
4927 problem, and as far as we know, signal-handling now works cleanly.
4928 (If you find any new bugs, please report them!)
4929 * The system no longer defaults Lisp source file names to types
4930 ".l", ".cl", or ".lsp", but only to ".lisp".
4931 * The compiler no longer uses special default file extensions for
4932 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4933 seems to expect a single default extension for all compiled code,
4934 and there's no compelling reason to try to stretch the standard
4935 to allow two different extensions.) Instead, byte-compiled files
4936 default to the same extension as native-compiled files.
4937 * Fasl file format version numbers have increased again, because
4938 a rearrangement of internal implementation packages made some
4939 dumped symbols in old fasl files unreadable in new cores.
4940 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4941 many fewer weird special cases.
4942 * Bug #17 (differing COMPILE-FILE behavior between logical and
4943 physical pathnames) has been fixed, and some related misbehavior too,
4944 thanks to a patch from Martin Atzmueller.
4945 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4946 by Tim Moore, ported to SBCL by Martin Atzmueller.
4947 * Martin Atzmueller fixed several filesystem-related problems,
4948 including bug #36, in part by porting CMU CL patches, which were
4949 written in part by Paul Werkowski.
4950 * More compiler warnings in src/runtime/ are gone, thanks to
4951 more patches from Martin Atzmueller.
4952 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4955 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4957 * DESCRIBE now works on CONDITION objects.
4958 * The debugger now handles errors which arise when trying to print
4959 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4961 * The build system now uses an additional file, customize-target-features.lisp,
4962 to allow local modifications to the target *FEATURES* list. (The point of
4963 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4964 debugging features enabled, without having to worry about propagating it
4965 into everyone's system when I do a "cvs update".) When no
4966 customize-target-features.lisp file exists, the target *FEATURES* list
4967 should be constructed the same way as before.
4968 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4969 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4970 warn about behavior which is undefined under the ANSI spec. Note: This
4971 is specified by ANSI, but it's not very popular with programmers.
4972 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4973 macro in the SBCL sources for an example of a workaround which you
4974 might use to make portable ANSI-standard code which does what you want.
4975 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4976 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4977 when it's used as a non-toplevel form. (This is required in order
4978 to implement the DEFCONSTANT-EQX macro.)
4979 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4980 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4981 funny things, due to bugs in the implementation of EVAL-WHEN
4982 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4983 non-toplevel DEFCONSTANTs are uncommon.)
4984 * The core file version number and fasl file version number have been
4985 incremented, because the old noncompliant DEFCONSTANT behavior involved
4986 calling functions which no longer exist, and because I also took the
4987 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4988 * fixed bug 1 (error handling before read-eval-print loop starts), and
4989 redid debugger restarts and related debugger commands somewhat while
4991 ** The QUIT debugger command is gone, since it did something
4992 rather different than the SB-EXT:QUIT command, and since it never
4993 worked properly outside the main toplevel read/eval/print loop.
4994 Invoking the new TOPLEVEL restart provides the same functionality.
4995 ** The GO debugger command is also gone, since you can just invoke
4996 the CONTINUE restart directly instead.
4997 ** The TOP debugger command is also gone, since it's redundant with the
4998 FRAME 0 command, and since it interfered with abbreviations for the
5000 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5002 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5003 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5004 some porting work by Martin Atzmueller)
5005 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5006 with a boatload of patches which he ported to SBCL. Now that those
5008 ** The system tries to make sure that its low-priority messages
5009 are prefixed by semicolons, to help people who like to use
5010 syntax highlighting in their ILISP buffer. (This patch
5011 was originally due to Raymond Toy.)
5012 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5013 patches originally written by Raymond Toy.
5014 ** The compiler understands coercion between single-value and
5015 multiple-VALUES type expressions better, getting rid of some very
5016 weird behavior, thanks to patches originally by Robert MacLachlan
5017 and Douglas Crosher.
5018 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5019 lambda lists, thanks to a patch originally by Pierre Mai.
5020 ** The system no longer bogusly warns about "abbreviated type
5022 ** The compiler gets less confused by inlining and RETURN-FROM,
5023 thanks to some patches originally by Tim Moore.
5024 ** The system no longer hangs when dumping circular lists to fasl
5025 files, thanks to a patch originally from Douglas Crosher.
5026 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5027 undefined function error.
5028 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5029 in structure slot initforms) for now, documented workaround instead:-|
5030 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5031 * fixed bug 5: added stubs for various Gray stream functions called
5032 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5033 installed, at least appropriate type errors are generated
5034 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5035 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5036 consistently in DEFMETHOD forms.
5037 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5038 it doesn't seem to affect SBCL after all
5039 * The C runtime system now builds with better optimization and many
5040 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5042 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5044 * The system is now under CVS at SourceForge (instead of the
5045 CVS repository on my home machine).
5046 * The new signal handling code has been tweaked to treat register
5047 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5048 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5049 downstream, e.g. in debug-int.lisp, has implicit dependencies
5050 on the unsignedness of integer representation of machine words,
5051 and that caused the system to bomb out with infinite regress
5052 when trying to recover from type errors involving signed values,
5053 e.g. (BUTLAST '(1 2 3) -1).)
5054 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5055 (This was one of the bugs Peter Van Eynde reported back in July.)
5056 * The system now uses code inspired by Colin Walters' O(N)
5057 implementation of MAP (from the cmucl-imp@cons.org mailing
5058 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5059 inline the MAP operation, and there is more than one
5060 sequence argument to the MAP call (so that it can't just
5061 do ETYPECASE once and for all based on the type of the
5062 single sequence argument). (The old non-inline implementation
5063 of the general M-argument sequence-of-length-N case required
5064 O(M*N*N) time when any of the sequence arguments were LISTs.)
5065 * The QUIT :UNIX-CODE keyword argument has been renamed to
5066 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5067 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5069 * Raymond Wiker's patches to port dynamic loading from Linux to
5070 FreeBSD have been added.
5071 * The BUGS file is now more nearly up to date, thanks in large part
5072 to Martin Atzmueller's review of it.
5073 * The debugger now flushes standard output streams before it begins
5074 its output ("debugger invoked" and so forth).
5075 * The core version number and fasl file version number have both
5076 been incremented, because of incompatible changes in the layout
5078 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5079 used to not be called for a saved Lisp image.)
5080 * Martin Atzmueller's version of a patch to fix a compiler crash,
5081 as posted on sbcl-devel 13 September 2000, has been installed.
5082 * Instead of installing Martin Atzmueller's patch for the
5083 compiler transform for SUBSEQ, I deleted the compiler transform,
5084 and transforms for some similar consing operations.
5085 * A bug in signal handling which kept TRACE from working on OpenBSD
5087 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5088 away by constant folding
5089 * The system now defines its address space constants in one place
5090 (in the Lisp sources), and propagates them automatically elsewhere
5091 (through GENESIS and the sbcl.h file). Therefore, patching the
5092 address map is less unnecessarily tedious and error-prone. The
5093 Lisp names of address space constants have also been systematized.
5094 * CVS tags like dollar-Header-dollar have been removed from
5095 the sources, because they have never saved me trouble and
5096 they've been source of trouble working with patches and other
5097 diff-related operations.
5098 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5099 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5101 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5103 * The system has been ported to OpenBSD.
5104 * The system now compiles with a simple "sh make.sh" on the systems
5105 that it's supported on. I.e., now you no longer need to tweak
5106 text in the target-features.lisp-expr and symlinks in src/runtime/
5107 by hand, the make.sh takes care of it for you.
5108 * The system is no longer so grossly inefficient when compiling code
5109 involving vectors implemented as general (not simple) vectors (VECTOR T),
5110 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5111 which dares to use the various sequence functions on non-simple
5112 vectors, takes less of a performance hit.
5113 * There is now a primitive type predicate VECTOR-T-P
5114 to test for the (VECTOR T) type, so that e.g.
5115 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5116 can now be compiled with some semblance of efficiency. (The old code
5117 turned the type declaration into a full call to %TYPEP at runtime!)
5118 * AREF on (VECTOR T) is still not fast, since it's still compiled
5119 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5120 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5121 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5122 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5123 without making full calls to SUBTYPEP at runtime.
5124 (Some analogous efficiency issues for non-simple vectors specialized to
5125 element types other than T, or for non-simple multidimensional arrays,
5126 have not been addressed. They could almost certainly be handled the
5127 same way if anyone is motivated to do so.)
5128 * The changes in array handling break binary compatibility, so
5129 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5130 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5131 instead of (VALUES T T).
5132 * By following the instructions that Dan Barlow posted to sbcl-devel
5133 on 2 July 2000, I was able to enable primitive dynamic object
5134 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5135 functionality is not implemented (since it calls ld to resolve
5136 library references automatically, requiring RUN-PROGRAM for its
5137 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5138 try to resolve library references) is now supported.
5139 * The system now flushes the standard output streams when it terminates,
5140 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5141 them at several other probably-convenient times, e.g. in each pass of
5142 the toplevel read-eval-print loop, and after evaluating a form given
5143 as an "--eval" command-line option. (These changes were motivated by a
5144 discussion of stream flushing issues on cmucl-imp in August 2000.)
5145 * The source transform for TYPEP of array types no longer assumes
5146 that an array whose element type is a not-yet-defined type
5147 is implemented as an array of T, but instead punts, so that the
5148 type will be interpreted at runtime.
5149 * There is now some support for cross-compiling in make.sh: each of
5150 the phases of make.sh has its own script. (This should be transparent
5151 to people doing ordinary, non-cross-compile builds.)
5152 * Since my laptop doesn't have hundreds of megabytes of memory like
5153 my desktop machine, I became more motivated to do some items on
5154 my to-do list in order to reduce the size of the system a little:
5155 ** Arrange for various needed-only-at-cold-init things to be
5156 uninterned after cold init. To support this, those things have
5157 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5158 symbols with such names are now uninterned after cold init).
5159 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5160 fasl files for cold load.
5161 ** Remove the old compiler structure pooling code (which used to
5162 be conditional on the target feature :SB-ALLOC) completely.
5163 ** Redo the representation of some data in cold init to be more compact.
5164 (I also looked into supporting byte compiled code at bootstrap time,
5165 which would probably reduce the size of the system a lot, but that
5166 looked too complicated, so I punted for now.)
5167 * The maximum signal nesting depth in the src/runtime/ support code has
5168 been reduced from 4096 to 256. (I don't know any reason for the very
5169 large old value. If the new smaller value turns out to break something,
5170 I'll probably just bump it back up.)
5171 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5173 * Many, many bugs reported by Peter Van Eynde have been added to
5174 the BUGS list; some have even been fixed.
5175 * While enabling dynamic object file loading, I tried to make the
5176 code easier to understand, renaming various functions and variables
5177 with less ambiguous names, and changing some function calling
5178 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5179 * While trying to figure out how to do the OpenBSD port, I tried to
5180 clean up some of the code in src/runtime/. In particular, I dropped
5181 support for non-POSIX signal handling, added various comments,
5182 tweaked the code to reduce the number of compilation warnings, and
5183 renamed some files to increase consistency.
5184 * To support the new automatic configuration functionality in make.sh,
5185 the source file target-features.lisp-expr has been replaced with the
5186 source file base-target-features.lisp-expr and the machine-generated
5187 file local-target-features.lisp-expr.
5188 * fixed a stupid quoting error in make.sh so that using CMU CL
5189 "lisp -batch" as cross-compilation host works again
5191 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5193 * DESCRIBE no longer tries to call itself recursively to describe
5194 bound/fbound values, so that it no longer fails on symbols which are
5195 bound to themselves (like keywords, T, and NIL).
5196 * DESCRIBE now works on generic functions.
5197 * The printer now prints less-screwed-up representations of closures
5198 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5199 * A private symbol is used instead of the :EMPTY keyword previously
5200 used to mark empty slots in hash tables. Thus
5201 (DEFVAR *HT* (MAKE-HASH-TABLE))
5202 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5203 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5204 now does what ANSI says that it should. (You can still get
5205 similar noncompliant behavior if bang on the hash table
5206 implementation with all the symbols you get back from
5207 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5208 This breaks binary compatibility, since tests for equality to
5209 :EMPTY are wired into things like the macroexpansion of
5210 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5212 * There's now a minimal placeholder implementation for CL:STEP,
5213 as required by ANSI.
5214 * An obscure bug in the interaction of the normal compiler, the byte
5215 compiler, inlining, and structure predicates has been patched
5216 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5217 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5219 * Missing ordinary arguments in a macro call are now detected even
5220 when the macro lambda list contains &KEY or &REST.
5221 * The debugger no longer complains about encountering the top of the
5222 stack when you type "FRAME 0" to explicitly instruct it to go to
5223 the top of the stack. And it now prints the frame you request even
5224 if it's the current frame (instead of saying "You are here.").
5225 * As specified by ANSI, the system now always prints keywords
5226 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5228 * The default initial SIZE of HASH-TABLEs is now smaller.
5229 * Type information from CLOS class dispatch is now propagated
5230 into DEFMETHOD bodies, so that e.g.
5231 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5233 is now basically equivalent to
5234 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5235 (DECLARE (TYPE SINGLE-FLOAT X))
5237 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5238 operation, without having to do run-time type dispatch.
5239 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5240 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5241 * Since I don't seem to be making big file reorganizations very often
5242 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5243 is overflowing my ability to conveniently back them up), I've finally
5244 checked the system into CVS. (The CVS repository is on my home system,
5245 not at SourceForge -- putting it on SourceForge might come later.)
5246 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5247 high-level GC-NOTIFY-FOO functions send their output. (There's
5248 still very little control of where low-level verbose GC functions
5249 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5250 less than it used to -- the GC-NOTIFY-FOO functions are now under
5251 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5252 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5253 in only one place in the source code, and propagates it automatically
5254 everywhere that it's needed. Thus e.g. when I bump the version from
5255 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5256 * The C source files now include boilerplate legalese and documentation
5257 at the head of each file (just as the Lisp source files already did).
5258 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5259 to his page will be replaced with a link to his new CLiki service.
5261 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5263 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5264 * The build process now looks for GNU make under the default name "gmake",
5265 instead of "make" as it used to. If GNU make is not available as "gmake"
5266 on your system, you can change this default behavior by setting the
5267 GNUMAKE environment variable.
5268 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5269 can build without error under CMU CL.
5271 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5273 * There is now a partial SBCL user manual (with some new text and some
5274 text cribbed from the CMU CL manual).
5275 * The beginnings of a profiler have been added (starting with the
5276 CMU CL profiler and simplifying and cleaning up). Eventually the
5277 main interface should be through the TRACE macro, but for now,
5278 it's still accessed through vaguely CMU-CL-style functions and macros
5279 exported from the package SB-PROFILE.
5280 * Some problems left over from porting CMU CL to the new
5281 cross-compilation bootstrap process have been cleaned up:
5282 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5283 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5284 part when getting rid of the compiler *BACKEND* stuff.)
5285 ** The value of *NULL-TYPE* was screwed up, because it was
5286 being initialized before the type system knew the final
5287 definition of the 'NULL type. This screwed up several key
5288 optimizations in the compiler, causing inefficiency in all sorts
5289 of places. (I found it because I wanted to understand why
5290 GET-INTERNAL-RUN-TIME was consing.)
5291 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5292 PROCLAIM FTYPE information. Unfortunately this broke binary
5293 compatibility again, since now the forms output by DEFGENERIC
5294 to refer to functions which didn't exist in 0.6.3.
5295 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5296 can use the new (as of 0.6.3) transform for SOME into MAP into
5298 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5299 values to (INTEGER 0 1000000), so that the time code will no longer
5300 occasionally get blown up by Linux returning 1000000 microseconds
5301 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5302 its output conform to the ANSI spec. (Alas, this makes its output
5303 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5304 * A full call to MAP NIL with a single sequence argument no longer conses.
5305 * fixes to problems pointed out by Martin Atzmueller:
5306 * The manual page no longer talks about multiprocessing as though
5307 it were currently supported.
5308 * The ILISP support patches have been removed from the distribution,
5309 because as of version 5.10.1, ILISP now supports SBCL without us
5310 having to maintain patches.
5311 * added a modified version of Raymond Toy's recent CMU CL patch for
5312 EQUALP comparison of HASH-TABLE
5314 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5316 * The system still can't cross-compile itself with
5317 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5318 entails), but at least it can compile more of itself that way
5319 than it used to be able to, and various buglets which were uncovered
5320 by trying to cross-compile itself that way have now been fixed.
5321 * This release breaks binary compatibility again. This time
5322 at least I've incremented the FASL file format version to 2, so that the
5323 problem can be detected reliably instead of just causing weird errors.
5324 * various new style warnings:
5325 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5326 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5327 ** using the lexical binding of a variable named in the *FOO* style
5328 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5329 as specified by ANSI.
5330 * *RANDOM-STATE* is no longer automatically initialized from
5331 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5332 default behavior of the system is to repeat its behavior every time
5333 it's run. If you'd like to change this behavior, you can always
5334 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5335 old convention there was no comparably easy way to get the system to
5336 repeat its behavior every time it was run.
5337 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5338 FTYPE declarations has been removed, in favor of their ANSI
5339 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5340 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5341 the types of their sequence arguments can be determined at compile time.
5342 This is done through a new open code expansion for MAP which eliminates
5343 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5344 argument types can be determined at compile time.
5345 * The optimizer now transforms COERCE into an identity operation when it
5346 can prove that the coerced object is already of the correct type. (This
5347 can be a win for machine generated code, including the output of other
5348 optimization transforms, such as the MAP transform above.)
5349 * Credit information has been moved from source file headers into CREDITS.
5350 * Source file headers have been made more standard.
5351 * The CASE macro now compiles without complaining even when it has
5354 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5356 * (Note that the way that the PCL macroexpansions were rewritten
5357 to accommodate the change in DEFGENERIC below breaks binary
5358 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5359 not run under sbcl-0.6.2. Once we get out of alpha releases,
5360 i.e. hit release 1.0.0, we'll probably try to maintain binary
5361 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5362 and sbcl-1.4.4. Until then, however, it might be fairly common
5363 for maintenance releases to break binary compatibility.)
5364 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5366 * The reporting of unhandled signals has been changed to print some
5367 explanatory text as well as the report form. (Previously only
5368 the report form was printed.)
5369 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5370 it defines, so that the compiler no longer issues undefined function
5371 warnings for compiled-but-not-yet-loaded generic functions.
5372 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5373 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5374 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5375 section of the ANSI spec are supported.
5376 * The "" nickname for the "KEYWORD" package has been removed.
5377 The reader still handles symbol tokens which begin with a package marker
5378 as keywords, but it doesn't expose its mechanism for doing so in the
5379 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5380 * The system now issues STYLE-WARNINGs for contradictory TYPE
5381 proclamations. (Warnings for contradictory FTYPE proclamations would
5382 be nice too, but those can't be done usefully unless the type system
5383 is made smarter about FUNCTION types.)
5384 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5385 systematized, so that "*target-*.lisp is supposed to exist only on the
5386 target and imply that there's a related file which exists on the
5387 host, and *host-*.lisp is supposed to exist only on the host and imply
5388 that there's a related file which exists on the target. This involves a
5389 lot of renaming. Hopefully the acute confusion caused by the renaming
5390 will be justified by the reduction in chronic confusion..
5391 ** runtime-type.lisp -> early-target-type.lisp
5392 ** target-type.lisp -> late-target-type.lisp
5393 ** early-host-format.lisp -> early-format.lisp
5394 ** late-host-format.lisp -> late-format.lisp
5395 ** host-error.lisp -> misc-error.lisp
5396 ** early-error.lisp -> early-target-error.lisp
5397 ** late-error.lisp -> late-target-error.lisp
5398 ** host-defboot.lisp -> early-defboot.lisp
5399 ** code/misc.lisp -> code/target-misc.lisp
5400 ** code/host-misc.lisp -> code/misc.lisp
5401 ** code/numbers.lisp -> code/target-numbers.lisp
5402 ** code/early-numbers.lisp -> numbers.lisp
5403 ** early-host-type.lisp -> early-type.lisp
5404 ** late-host-type.lisp -> late-type.lisp
5405 ** host-typep.lisp -> typep.lisp
5406 ** load.lisp -> target-load.lisp
5407 ** host-load.lisp -> load.lisp
5408 ** host-disassem.lisp -> disassem.lisp
5409 ** host-insts.lisp -> insts.lisp
5410 ** byte-comp.lisp -> target-byte-comp.lisp
5411 ** host-byte-comp.lisp -> byte-comp.lisp
5412 ** host-signal.lisp -> signal.lisp
5413 ** host-defstruct.lisp -> defstruct.lisp
5414 ** late-target-type.lisp -> deftypes-for-target.lisp
5415 Furthermore, several other previously target-only files foo.lisp (e.g.
5416 hash-table.lisp and random.lisp) have been split into a target-and-host
5417 foo.lisp file and a target-only target-foo.lisp file, with their key type
5418 definitions in the target-and-host part, so that the cross-compiler will
5419 know more about target types.
5420 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5421 gone away. In their place are various *BACKEND-FOO* variables
5422 corresponding to the slots of the old structure.
5423 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5424 into the target SBCL has been fixed.
5425 * The chill.lisp system for loading cold code into a running SBCL
5427 * Support for the CMU CL "scavenger hook" extension has been removed.
5428 (It was undocumented and unused in the CMU CL sources that SBCL was
5429 derived from, and stale in sbcl-0.6.1.)
5430 * Various errors in the cross-compiler type system were detected
5431 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5432 (enabling various consistency checks). Many of them were fixed,
5433 but some hard problems remain, so the compiler is back to
5434 running without *TYPE-SYSTEM-INITIALIZED* for now.
5435 * As part of the cross-compiler type system cleanup, I implemented
5436 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5437 * I have started adding UNCROSS calls throughout the type system
5438 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5439 on cross-compiler input files will be able to go away, and various
5441 * CONSTANTP now returns true for quoted forms (as explicitly required
5444 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5446 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5447 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5448 (MAKE-LIST -1). In the longer term, it ought to become true
5449 that declarations are assertions even at SAFETY 1. For now, it's not
5450 quite true even at SAFETY 3, but it's at least more nearly true..
5451 (Note that this change seems to increases the size of the system by
5452 O(5%) and to decrease the speed of the compiler by 20% or more.)
5453 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5454 for the problem of printing dozens of lines of distracting information
5455 about low-level system machinery as part of the top stack frame
5456 on entry to the debugger when an undefined function was called.
5457 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5458 is not reset to COMMON-LISP-USER.
5459 * Compilation of stuff related to dyncount.lisp has been made conditional
5460 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5461 smaller. The various dyncount-related symbols have been moved into
5462 a new "SB-DYNCOUNT" package.
5463 * tty-inspect.lisp has been renamed to inspect.lisp.
5464 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5465 feature has gone away. (When we eventually port to other flavors of
5466 libc and/or Unix, we'll try to make the differences between flavors
5467 invisible at the user level.)
5468 * Various other *FEATURES* tags, and/or their associated conditionals,
5469 have been removed if obsolescent, or given better documentation, or
5470 sometimes given more-mnemonic names.
5472 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5474 * tidied up "make.sh" script
5475 * tidied up system directory structure
5476 * better "clean.sh" behavior
5477 * added doc/FOR-CMUCL-DEVELOPERS
5478 * many many small tweaks to output format, e.g. removing possibly-confusing
5479 trailing #\. character in DESCRIBE-INSTANCE
5480 * (EQUALP #\A 'A) no longer signals an error.
5481 * new hashing code, including EQUALP hashing
5482 * tidied up Lisp initialization and toplevel
5483 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5484 * command line argument processing
5485 * added POSIX-GETENV function to deal with Unix-ish environment variables
5486 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5487 terminating SBCL on EOF
5488 * non-verbose GC by default
5489 * There is no more "sbcl" shell script; the sbcl file is now the C
5490 runtime executable (just like CMU CL).
5491 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5493 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5494 symbol and package information as Lisp native symbol and package objects
5495 instead of strings naming symbols and strings naming packages. This way,
5496 whenever packages are renamed (as in warm init), debug information is
5497 transformed along with everything else.
5498 * tweaked the optimization policy declarations which control the building
5499 of SBCL itself. Now, among other things, the system no longer saves
5500 source location debugging information. (This helps two problems at once
5501 by reducing SBCL size and by keeping SBCL from trying to look for its
5502 sources -- which may not exist -- when reporting errors.)
5503 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5504 debugging and testing purposes
5505 * cleaned up printing, making the printer call PRINT-OBJECT for
5506 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5507 methods, giving nearly-ANSI behavior
5508 * converted almost all special variables to use *FOO* naming convention
5509 * deleted PARSE-TIME functionality, since it can be done portably
5510 * moved some files out of cold init into warm init
5511 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5513 * regularized formatting of source files
5514 * added an install.sh script
5515 * fixed ridiculous memory usage of cross-compiler by making
5516 compiler/alloc.lisp not try to do pooling unless it can hook
5517 itself into the GC of the cross-compilation host. Now the system
5518 builds nicely on my old laptop.
5519 * added :SB-ALLOC in target-features.lisp-expr
5520 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5521 was not implemented)
5522 * re-did condition handling and note reporting in the compiler. Notes
5523 are no longer handled by signalling conditions. Style warnings
5524 and warnings are handled more correctly and reported in such a way
5525 that it's easy to find one or the other in your output (so that you
5526 can e.g. figure out which of many problems caused COMPILE-FILE to
5528 * changed the severity of several compiler warnings from full WARNING
5529 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5530 compiler note reporting so that it doesn't use the condition system
5531 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5532 COMPILE-FILE command)
5533 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5534 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5535 no longer supported, since their implementation was deeply intertwingled
5536 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5537 * removed bogus "support" for compiler macros named (SETF FOO), and
5538 removed the compiler macro for SETF INFO (but only after making a fool
5539 of myself on the cmucl-imp mailing list by posting a bogus patch for
5540 DEFINE-COMPILER-MACRO..)
5541 * Compiled files containing forms which have side effects on the Lisp
5542 reader (such as DEFPACKAGE forms) are now handled more correctly.
5543 (Compiler queuing of top level lambdas has been suppressed by setting
5544 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5545 * deleted various currently-unused source files, e.g. gengc.lisp. They
5546 may be added back at some point e.g. when porting to other architectures,
5547 but until they are it's distracting to distribute them and to try to
5549 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5550 there were so many of them they're just distractions, and UNCROSS is
5551 known to be able to handle the current sources
5552 * moved PROFILE functionality into TRACE, so that it will be clear
5553 how the wrapping and unwrapping of functions when you profile them
5554 interacts with the wrapping and unwrapping of functions when you
5555 trace them. (Actually, the functionality isn't there yet, but at least
5556 the interface specification is there. Hopefully, the functionality will
5557 arrive with some future maintenance release.)
5558 * removed host-oops.lisp
5559 * changed signature of QUIT function to allow UNIX-CODE argument
5560 * fixed READ-SEQUENCE bug
5561 * tweaked verbose GC output so that it looks more like the progress
5562 output that ANSI specifies for functions like LOAD
5563 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5564 * added <http://sbcl.sourceforge.com> to the banner information printed by