1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.36:
3 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
4 stack frame thrown from.
5 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
6 constraint propgation, allowing better compilation eg. when used to
7 access structures with WITH-SLOTS. (lp#520366)
8 * optimization: the compiler is now more aware of the type of the underlying
9 storage vector for multidimensional simple arrays resulting in better code
10 for accessing such arrays.
11 * optimization: passing NIL as the environment argument to TYPEP no longer
12 inhibits optimizing it. (lp#309788)
13 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
14 pre-allocated temporary vectors. (lp#496249)
15 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
16 in :INITIAL-CONTENTS. (lp#523612)
17 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
18 functions. (lp#524707)
19 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
20 WITH-SLOTS usages during compilation.
21 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
22 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
23 all x86oid platforms with :UD2-BREAKPOINTS target feature.
24 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
25 instruction (tested on x86oid linux with ud2-breakpoints).
26 * bug fix: slam.sh now works on win32.
27 * bug fix: better differences of numeric types. (lp#309124)
28 * bug fix: arrays declared intersection and union types can have their
29 upgraded element type derived. (lp#316078)
30 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
31 threads started during profiling. (lp#472499)
32 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
35 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
36 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
37 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
38 but work on type specifiers.
39 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
40 to name a type specifier.
41 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
42 specifier is valid where "valid" basically means "would be accepted as
43 second argument of TYPEP".
44 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
45 returns the function's declared, or derived FTYPE.
46 * new feature: SB-POSIX now supports accessing the d_ino member of
47 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
48 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
49 provide for seeding a RANDOM-STATE object with user-provided data or
50 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
51 attempt to initialize the returned state from the operating system's
52 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
53 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
54 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
55 * bug fix: Fix grammar and style issues for the docstrings of
56 printer-related variables and functions. (Thanks to mon_key; launchpad
58 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
60 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
61 in a row even though a handler defered the deadline long into the
63 * bug fix: A deadline handler was run without interrupts enabled for a
64 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
65 in infinitely spinning, non-killable threads.
66 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
67 before reaching the erring stack frame.
68 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
69 real power. (launchpad bug lp#525949)
70 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
71 GENCGC platforms. (launchpad bug lp#529014)
72 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
73 (launchpad bug lp#525916)
74 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
75 (Thanks to Robert Goldman)
77 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
78 * optimization: ROUND with a single single-float or double-float argument
79 is properly inlined when possible.
80 * optimization: Slightly better code is generated for integer<->float
81 conversions and for single-float<->double-float conversions on x86-64.
82 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
83 code for 32-bit and 64-bit rotations on x86-64.
84 * bug fix: The install script changes the ownership of directories as well
85 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
86 launchpad bug lp#508485)
87 * bug fix: TRUNCATE with a single single-float or double-float argument is
88 properly inlined when possible. (launchpad bug lp#489388)
89 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
90 no longer causes a compiler error on x86 and ppc.
91 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
92 always relative to *READTABLE* rather than the passed argument.
94 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
95 * minor incompatible change: threading support is now enabled by default
97 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
99 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
100 are now caught and reported just like errors during macroexpansion.
101 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
102 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
103 * enhancement: ASDF systems can now depends on SB-QUEUE.
104 * fixes and improvements related to Unicode and external formats:
105 ** bug fix: error handling and restart usage in the ucs-2 external format
107 ** there is now an implementation of the ucs-4 external format.
108 ** the utf-16 and utf-32 external formats are supported.
109 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
110 in the environment. setenv() and unsetenv() are also provided. (reported by
111 Fare Rideau; launchpad bug lp#460455)
112 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
113 loading. This ensures sensible errors for .FASL files from other
114 implementations on case-insensitive filesystems. (reported by Willem
115 Broekema; launchpad bug lp#489417)
116 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
117 Willem Broekema; launchpad bug lp#489698).
118 * bug fix: some minor code rearrangements to reenable warning-free building
119 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
120 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
122 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
125 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
126 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
127 * improvement: support O_LARGEFILE access to files larger than 2GB on
128 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
129 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
130 definitions for methods specializing on the passed class itself.
131 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
132 definitions for methods specializing on the passed class itself, or on
134 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
135 about itself during the build (e.g. for M-? in Slime), if this flag is
136 enabled in customize-target-features.lisp. This will increase the core
137 size by about 5-6mb, though, so it's mostly interesting to SBCL
139 * new feature: various GENCGC tuning parameters have been experimentally
140 documented and exported from SB-EXT. See documentation for details.
141 * fixes and improvements related to Unicode and external formats:
142 ** the Unicode character database has been upgraded to the
143 Unicode 5.2 standard, giving names and properties to a number of new
144 characters, and providing a few extra characters with case
146 ** improvement: restarts for providing replacement input/output on coding
147 errors for fd-stream external formats.
148 ** improvement: where :<encoding> is a keyword corresponding to an
149 external format the system supports, it is now possible to specify
150 (:<encoding> :replacement <character>) as an external format which will
151 automatically substitute <character> on encoding or decoding errors for
152 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
154 ** improvement: the file streams underlying the standard streams (such as
155 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
156 which uses the replacement mechanism to handle encoding errors,
157 preventing various infinite error chains and unrecoverable I/O
159 ** minor incompatible change: the utf-8 external format now correctly
160 refuses to encode Lisp characters in the surrogate range (char-codes
161 between #xd800 and #xdfff).
162 ** fix a typo preventing conversion of strings into octet vectors
163 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
165 ** fix a bug in the octet multibyte handling of decoding errors and the
166 USE-VALUE restart. (launchpad bug lp#314939)
167 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
168 restart on fd-stream decoding errors.
169 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
170 error is near the end of file.
171 ** fix a double-error case in unibyte octet conversions, when the first
172 use of USE-VALUE is ignored.
173 ** fix bugs in handling of undefined code points in unibyte encodings.
174 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
175 streams after an UNREAD-CHAR.
176 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
177 object is allocated in a boxed region of dynamic space.
178 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
179 fork with multiple Lisp threads running is made, instead of going
180 ahead with unpredictable consequences. (reported by Leslie Polzer)
181 * bug fix: uses of slot accessors on specialized method parameters within
182 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
183 error while finalizing the class. This fix may cause classes with slot
184 accessors to be finalized later than previously. (reported by Lars Rune
185 Nøstdal; launchpad bug lp#473699)
186 * bug fix: restore buildability on the MIPS platform. (regression from
187 1.0.30.38, reported by Samium Gromoff)
188 * bug fix: inspecting closures is less likely to fail with a type error.
189 * bug fix: no timer starvation when setting the system clock back.
190 (launchpad bug lp#460283)
191 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
192 standard pprint dispatch table as specified by CLHS.
193 * bug fix: give CLISP a hint about a type declaration to enable it to build
194 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
196 * bug fix: correctly dump literal objects in defaulting forms of arglists.
197 (reported by Attila Lendvai; launchpad bug lp#310132)
198 * bug fix: distinguish in type specifiers between arrays that might be
199 complex and arrays that are definitely complex. (launchpad bug lp#309129)
200 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
201 type. (reported by Levente Mészáros; launchpad bug lp#485972)
202 * bug fix: setting the value of a symbol-macro within a method in the
203 presence of type declarations works properly again. (reported by Iban
204 Hatchondo; launchpad bug lp#485019)
206 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
207 * optimization: faster FIND and POSITION on strings of unknown element type
208 in high SPEED policies. (thanks to Karol Swietlicki)
209 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
211 * improvement: better error signalling for bogus parameter specializer names
212 in DEFMETHOD forms (reported by Pluijzer)
213 * bug fix: DELETE-FILE once again works on logical pathnames (regression
215 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
217 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
218 removes previous default initargs (reported by Lars Rune Nøstdal and
220 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
221 lambda-lists. (reported by Peter Seibel)
222 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
223 correctly when starting from an executable core without saved runtime
224 options (reported by Faré Rideau, thanks to Zach Beane)
225 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
226 an optimization note instead. (reported by Martin Cracauer)
227 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
228 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
229 new process group if it doesn't need to share stdin with the sbcl
230 process. (thanks to Leslie Polzer)
231 * bug fix: SATISFIES could be misoptimized to refer to a local function.
232 (reported by Stanislaw Halik)
234 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
235 * improvement: stack allocation is should now be possible in all nested
236 inlining cases: failure to stack allocate when equivalent code is manually
237 open coded is now considered a bug.
238 * improvements related to Unicode:
239 ** the Unicode character database has been upgraded to the
240 Unicode 5.1 standard, giving names and properties to a number of new
241 characters, and providing a few extra characters with case
243 ** the system now recognizes and produces names for Unicode Hangul
245 ** the EBCDIC-US external-format is now supported for octet operations
246 (as well as for stream operations).
247 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
248 be used to output toplevel compile-time effects into a separate .CFASL
250 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
251 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
253 * optimization: TRUNCATE on known single- and double-floats is upto 25%
255 * optimization: division of floating point numbers by constants uses
256 multiplication by reciprocal when an exact reciprocal exists.
257 * optimization: multiplication of single- and double-floats floats by
258 constant two has been optimized.
259 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
260 sufficient type information is available. (thanks to Leslie Polzer)
261 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
262 known structure objects are as efficient as defstruct generated accessors.
263 * optimization: unused vector creation can now be optimized away.
264 * improvement: ASDF systems can now depends on SB-INTROSPECT.
265 * improvement: a STYLE-WARNING is signalled when a generic function
266 clobbers an earlier FTYPE proclamation.
267 * improvement: the compiler is able to track the effective type of
268 generic function across method addition and removal even in the
269 absence of an explicit DEFGENERIC.
270 * improvement: DESCRIBE now reports on symbols naming undefined
271 but assumed or declared function as well.
272 * improvement: recompilation of systems using SB-GROVEL now works
273 (thanks to Leslie Polzer)
274 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
275 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
277 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
278 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
279 well as user defined declaration names.
280 ** VARIABLE-INFORMATION is now aware of alien variables.
281 * improvement: improved address space layout on OpenBSD (thanks to Josh
283 * improvement: pretty-printing of various Lisp forms has been improved
284 (thanks to Tobias Rittweiler)
285 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
286 unused were deleted in safe code. (reported by John Fremlin)
287 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
289 * bug fix: some out-of-line array predicates were missing (reported by
291 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
293 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
294 (thanks to Larry D'Anna)
295 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
296 as well. (reported by Josh Elsasser)
297 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
298 leading to possible attempts to delete the same file twice. See docstring
299 on DELETE-FILE for details. (reported by John Fremlin)
300 * bug fix: DELETE-FILE once again deletes the file named by the pathname
301 designator argument, rather than its truename. (reported by Luis
303 * bug fix: the low-level debugger had 32-bit assumptions and was missing
304 information about some array types. (thanks to Luis Oliveira)
305 * bug fix: moderately complex combinations of inline expansions could
306 be miscompiled if the result was declared to be dynamic extent.
307 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
308 form (+ <variable> <integer>) were miscompiled under certain
310 * bug fix: in some cases no compiler note about failure to stack allocate
311 was emitted, even if the objects were in fact heap allocated.
312 * bug fix: minor violation of "otherwise inaccessible" rule for stack
313 allocation could cause objects users might reasonably expect to
314 be heap allocated to be stack allocated.
315 * bug fix: DESCRIBE signalled an error for generic functions under
316 certain circumstances. (thanks to Leslie Polzer)
317 * bug fix: Fixed spelling of an error message.
319 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
320 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
321 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
322 of SB-THREAD:THREAD-ERROR-THREAD.
323 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
324 * new feature: docstrings for local and anonymous functions are no longer
325 discarded. (thanks to Leslie Polzer)
326 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
327 values in other threads.
328 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
329 about object allocation.
330 * optimization: division of a real float by a complex float is implemented
331 with a specialised code sequence.
332 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
333 keywords is an order of magnitude faster.
334 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
335 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
336 methods, and similarly for non-standard metaclass classes as long as there
337 are no methods additional on MAKE-INSTANCE.
338 * optimization: more efficient type-checks for FIXNUMs when the value
339 is known to be a signed word on x86 and x86-64.
340 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
341 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
343 * optimization: compiler is smarter about delegating argument type checks to
345 * optimization: several character functions are now compiled somewhat more
346 efficiently. (reported by Lynn Quam)
347 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
348 * improvement: less unsafe constant folding in floating point arithmetic,
349 especially for mixed complex/real -float operations.
350 * optimization: constant double and single floats are stored in native
351 unboxed format on x86[-64].
352 * optimization: smarter code for arithmetic operations with constant floats,
353 complex floats, or integers on x86[-64].
354 * optimization: smarter code for conjugate/multiplication of float complexes
355 and abs/negate of floats on x86-64.
356 * optimization: more efficient complex float and real float operations on
358 * improvement: complex float division is slightly more stable.
359 * improvement: DESCRIBE output has been reworked to be easier to read and
360 contains more pertinent information.
361 * improvement: failure to provide requested stack allocation compiler notes
362 provided in all cases (requested stack allocation not happening without a
363 note being issued is now considered a bug.)
364 * bug fix: SB-POSIX exports the documented types and functions
365 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
366 types. (reported by "abhi")
367 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
368 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
369 (thanks to Paul Khuong)
370 * bug fix: looping around HANDLER-CASE could silently consume stack space
371 on each iteration. (reported by "foobar")
372 * bug fix: better error signalling when calls to functions seeking elements
373 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
374 (reported by Tobias Rittweiler)
375 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
376 directory components now works as it used to. (various prolems reported by
377 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
378 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
379 (reported by Elliot Slaughter, thanks to Stas Boukarev)
380 * bug fix: bogus undefined variable warnings from fopcompiled references to
381 global variables. (thanks to Lars Rune Nøstdal)
382 * bug fix: foreign function names should now appear in backtraces on
383 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
384 * bug fix: SETF compiler macro documentation strings are not discarded
386 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
387 (thanks to Alex Plotnick)
388 * bug fix: SLEEP accepts large integer arguments, truncating them to
389 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
390 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
391 * bug fix: compiler notes for expensive slot type checks could be emitted
392 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
394 changes in sbcl-1.0.29 relative to 1.0.28:
395 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
396 https://bugs.launchpad.net/sbcl
397 Bugs can be reported directly there, or by sending email to
398 sbcl-bugs@lists.sourceforge.net
399 (no subscription required.)
400 * minor incompatible change: under weak type checking policy integer
401 types are weakened less aggressively.
402 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
403 allowed to return, which causes SBCL to quit with exit status 0. Previously
404 if the function returned with a small integer return value, that value
405 was accidentally reused as the exit status.
406 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
407 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
408 :HASH-FUNCTION argument. Refer to user manual for details.
409 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
411 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
412 microseconds since the Unix epoch on all platforms.
413 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
414 allows the compiler to safely elide boundedness checks for special
416 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
417 the symbol, prohibits both lexical and dynamic binding. This is mainly an
418 efficiency measure for threaded platforms, but also valueable in
420 * new feature: UNC pathnames are now understood by the system on Windows.
421 * optimization: the compiler uses a specialized version of FILL when the
422 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
424 * optimization: accesses to potentially non-simple arrays where element type
425 is known are 50% faster.
426 * optimization: compiler now generates faster array typechecking code.
427 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
429 * optimization: multidimensional array accesses in the absence of type
430 information regarding array rank are approximately 10% faster due to
431 open coding of ARRAY-RANK.
432 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
433 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
435 * optimization: result of call to VECTOR can now be stack allocated.
436 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
437 as long as the resulting array is one-dimensional and has a known
438 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
439 length of the list matches the known length of the vector does not
440 allocate the list as an intermediate step. Ditto for VECTOR and simple
442 * optimization: MAKE-ARRAY can now stack allocate in the presence of
443 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
444 known element type, and is known to be simple and one dimensional.
445 * improvement: SBCL now emits a compiler note where stack allocation was
446 requested but could not be provided (not in all cases, unfortunately)
447 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
448 * improvement: pretty-printing loop has been implemented properly. (thanks
449 to Tobias Rittweiler)
450 * documentation: CLOS slot typechecing policy has been documented.
451 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
452 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
453 pointer, leading to memory faults. (thanks to Bart Botta)
454 * bug fix: better floating point exception handling on x86/OpenBSD.
455 (thanks to Josh Elsasser)
456 * bug fix: exit status from QUIT when called under --script was lost
457 (reported by Hubert Kauker)
458 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
459 same implementation of FILL to initialize the array, even if a more
460 efficient one was available (reported by Stas Boukarev, thanks to
462 * bug fix: potential miscompilation of array stack allocation on x86 and
463 x86-64. (reported by Time Tossavainen)
464 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
465 result in their subforms being treated as top level forms. (reported by
467 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
468 than a machine register could leave garbage in the high bits of the
469 result register (bug 316325).
470 * bug fix: disable address space randomization Linux/x86-64 as well,
471 not just x86-64. (reported by Ken Olum)
472 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
473 generate incorrect code.
474 * bug fix: #201; type inference for CONS and ARRAY types could derive
475 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
476 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
477 could not be assigned to or bound with PROGV. (reported by Lorenz
479 * bug fix: the value of CL:- in the inspector was the previous expression
480 evaluated rather than the expression being evaluated.
481 * bug fix: constants can no longer be locally declared special.
482 * bug fix: signals delivered to threads started from foreign land (read:
483 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
484 thread by blocking all signals and resignalling.
485 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
486 from :INITFORM, if any.
488 changes in sbcl-1.0.28 relative to 1.0.27:
489 * a number of bugs in cross-compilation have been fixed, with the ultimate
490 result that building under (at least) clisp should be much more reliable.
491 * minor incompatible changes: echo-streams now propagate unread-char to the
492 underlying input stream, and no longer permit unreading more than one
494 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
495 frames, allowing for instance more reliable backtraces.
496 * improvement: the debugger REPL can now reference lexical variables
497 by name directly for code compiled with (DEBUG 3).
498 * improvement: errors from malformed declarations now have better source
499 paths associated with them. (thanks to Tobias Rittweiler)
500 * optimization: faster local calls on x86/x86-64
501 * bug fix: some error messages for out-of-bound array indexes confused the
502 index and the bound. (thanks to Stas Boukarev)
503 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
505 * bug fix: running regressions tests in shells without OSTYPE set now works.
506 (reported by Harald Hanche-Olsen)
507 * bug fix: more robust static space exhaustion signalling from
508 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
509 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
510 docstring away instead of storing it under names such as (LAMBDA (X)).
511 (reported by Leslie Polzer)
512 * bug fix: timers could go off in the wrong order, be delayed indefinitely
513 (thanks to Ole Arndt for the patch)
514 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
515 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
516 potentially-invalid effective methods in its cache.
517 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
518 instances as well (thanks to Paul Khuong)
519 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
520 SB-POSIX:WAITPID and their C equivalents.
521 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
523 changes in sbcl-1.0.27 relative to 1.0.26:
524 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
525 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
526 * improvement: the system either recovers from stack exhaustion or dies
527 properly as opposed to leaving the user uncertain of whether the handler
528 trampled on some random memory next to the stack or having to rely on
529 --lose-on-corruption (which is still a good idea to use in production
530 because stack exhaustion can happen in signal handlers which will likely
532 * bug fix: fix gc related interrupt handling bug on ppc (regression from
533 1.0.25.37, reported by Harald Hanche-Olsen)
534 * bug fix: work around signal delivery bug in darwin (regression from
535 1.0.25.44, reported by Sidney Markowitz)
536 * bug fix: fix ERROR leaking memory (reported by David Thompson)
538 changes in sbcl-1.0.26 relative to 1.0.25:
539 * incompatible change: an interruption (be it a function passed to
540 INTERRUPT-THREAD or a timer function) runs in an environment where
541 interrupts can be enabled. The interruption can use
542 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
543 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
544 potentially running out of stack. Keep in mind that in the absence
545 of WITHOUT-INTERRUPTS some potentially blocking operation such as
546 acquiring a lock can enable interrupts.
547 * incompatible change: GC-OFF and GC-ON are removed, as they were
548 always unsafe. Use WITHOUT-GCING instead.
549 * new feature: runtime option --disable-ldb
550 * new feature: runtime option --lose-on-corruption to die at the
551 slightest hint of possibly non-recoverable errors: running out of
552 memory, stack, alien stack, binding stack, encountering a memory
553 fault, etc. In the absence of --lose-on-corruption a warning is
555 * enhancement: detect binding stack exhaustion
556 * enhancement: detect alien stack exhaustion on x86/x86-64
557 * improvement: generally more stable and reliable interrupt handling
558 * improvement: there is a per thread interruption queue,
559 interruptions are executed in order of arrival
560 * improvement: a repeating timer reschedules itself when the it has
561 finished, but expiration times are spaced equally. If an
562 expiration time is in the past it will trigger after a short grace
563 period that may give a chance to other things to run.
564 * optimization: slightly faster gc on multithreaded builds
565 * optimization: faster WITHOUT-GCING
566 * bug fix: when JOIN-THREAD signals an error, do it when not holding
567 important locks so that the debugger/handler doesn't produce
568 recursive errors or deadlock.
569 * bug fix: real-time signals are not used anymore, so no more
570 hanging when the system wide real-time signal queue gets full.
571 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
573 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
574 * bug fix: fix random memory faults related to interrupts on alpha
575 * bug fix: fix random memory faults related to interrupts on sparc
576 * bug fix: fix deadlocks related to starting threads
577 * bug fix: fix deadlines on locks on futex platforms
578 * bug fix: restore errno in signal handlers
579 * bug fix: fix deadlocks related to hash tables
580 * bug fix: fix deadlocks in pcl
582 changes in sbcl-1.0.25 relative to 1.0.24:
583 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
584 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
585 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
586 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
587 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
588 better name and does not return values so stale on multiprocessor systems.
589 Also, HOLDING-MUTEX-P was added for about the only sane usage of
591 * improvement: unithread builds keep track of MUTEX-VALUE.
592 * improvement: reading from a TWO-WAY-STREAM does not touch the output
593 stream anymore making it thread safe to have a concurrent reader and
594 a writer, for instance, in a pipe.
595 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
596 arguments, making compiler-macros for SETF-functions able to inspect
597 their constant arguments.
598 * improvement: COMPILE-FILE reports times with millisecond accuracy
599 (thanks to Luis Oliveira)
600 * optimization: CHAR-CODE type derivation has been improved, making
601 TYPEP elimination on subtypes of CHARACTER work better. (reported
602 by Tobias Rittweiler, patch by Paul Khuong)
603 * bug fix: setting alien structure fields of type struct by value now
604 computes the right offset for the memory copy.
605 * bug fix: compilation problem involving inlined calls to aliens with
606 result type VOID. (reported by Ken Olum)
607 * bug fix: #235a; sequential inline expasion in different policies no
608 longer reuses the functional from the previous expansion site.
609 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
610 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
611 * bug fix: named ENUMs in multiply-referenced alien record types no longer
612 cause an implied type redefinition. Regression from 1.0.21.29.
613 * bug fix: sign-extension of small signed return values now works with C
614 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
615 * improvements to the Windows port:
616 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
617 Westfold, thanks to Rudi Schlatte)
619 changes in sbcl-1.0.24 relative to 1.0.23:
620 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
621 vector of a multidimensional SIMPLE-ARRAY.
622 * new feature: the system now signals a continuable error if standard
623 readtable modification is attempted. (thanks to Tobias Rittweiler)
624 * new feature: DIRECTORY has been extended with a non-standard keyword
625 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
626 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
627 has been robustified and documented better. (thanks to Robert Goldman)
628 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
629 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
630 * tradeoff: constant FORMAT control strings are now compiled unless
631 SPACE > SPEED (previously only when SPEED > SPACE.)
632 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
634 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
636 * bug fix: lexical type declarations are now correctly reported by
637 SB-CLTL2. (reported by Larry D'Anna)
638 * bug fix: STRING-TO-OCTETS did not handle :START properly when
639 using UTF-8 as external format. (thanks to Luis Oliveira)
640 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
641 are signalled correctly. (thanks to Stas Boukarev)
642 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
643 designator. (thanks to Tobias Rittweiler)
644 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
645 designator, and returns T instead of the function. (thanks to
647 * bug fix: direct superclasses of STANDARD-CLASS and
648 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
649 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
650 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
651 when no class with the named slot yet exists no longer causes a
652 compile-time style-warning.
653 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
654 in safe code. (reported by Didier Verna)
655 * bug fix: #430; nested structure constructors can stack allocate.
656 * bug fix: on some 64-bit platforms dynamic space size was truncated
657 to #xffff0000 bytes. (reported by Benjamin Lambert)
658 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
659 REPL unusable. (reported by Daniel Herring)
660 * bug fix: return values of READ-SEQUENCE did not take :START into
661 account on file streams, regressions since 1.0.12.22. (reported by
662 Thomas Russ, patch by Paul Khuong)
663 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
664 method specializer used to confuse permuation vector optimization.
665 * bug fix: system inserted bogus implicit type declarations for local
666 special variables in DEFMETHOD bodies.
667 * bug fix: #354; duplicated frames in backtraces due to
668 non-tail-call-optimized XEPs to functions with return type NIL
670 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
671 initializes structure object slots according to DEFSTRUCT initforms,
672 and DEFSTRUCT forms :INCLUDEind structure classes defined using
673 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
674 (reported by Bruno Haible and Stephen Wilson)
675 * bug fix: #395; fill-pointer output streams used now support
676 element-type BASE-CHAR as well.
677 * bug fix: compiler error when attempting to derive return value of
678 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
680 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
682 * bug fix: Mac OS X binaries should now be portable between Leopard
685 changes in sbcl-1.0.23 relative to 1.0.22:
686 * enhancement: when disassembling method functions, disassembly
687 for the associated fast function is also produced.
688 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
690 * optimization: printing with *PRINT-PRETTY* true is now more
691 efficient as long as the object being printed doesn't require
692 special handling by the pretty printer.
693 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
694 now interact correctly with type declarations.
695 * partial bug fix: PCL detects infinite recursion during wrapper
696 validation. (thanks to Attila Lendvai)
697 * bug fix: #426; nested function calls are inlined properly.
698 Previously if FOO was an inline function, in calls of the form
699 (FOO (FOO ...)) the outer call was not inlined.
700 * bug fix: long long arguments passed in registers to alien
701 functions on PowerPC Linux and NetBSD are now handled correctly
702 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
704 changes in sbcl-1.0.22 relative to 1.0.21:
705 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
706 for the shared object in the current directory, but passes the native
707 namestring of the designated pathname to the operation system's shared
708 object loading function as-it.
709 * minor incompatible change: --disable-debugger toplevel option now takes
710 effect before processing of initialization files and --eval or --load
712 * new feature: new commandline argument: --script, which supports
713 shebang lines. See documentation for details. (based on work by
715 * new feature: SAVE-LISP-AND-DIE can save current values of
716 --dynamic-space-size and --control-stack-size in the executable core,
717 causing it to skip normal runtime option processing. See documentation
718 for details. (thanks to Zach Beane)
719 * enhancement: inoccous calls to EVAL or generic functions dispatching
720 on subclasses of eg. STREAM no longer cause compiler notes to appear.
721 * enhancement: the system no longer resignals errors from --load and
722 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
723 associated with the original error to be lost. (thanks to Ariel
725 * enhancement: :DONT-SAVE keyword argument has been added to
726 LOAD-SHARED-OBJECT for controlling interaction with
727 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
728 the effects of an earlier LOAD-SHARED-OBJECT call.
729 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
730 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
731 provided. (reported by Cedric St-Jean)
732 * bug fix: circularity handling in the reader did not treat raw
733 structure slots correctly. (reported by Cedric St-Jean)
734 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
735 file descriptors when there were none.
736 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
737 was broken. (reporteed by Willem Broekema)
738 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
739 pathnames without a directory.
740 * bug fix: COMPILE-FILE did not warn about undefined variable
741 references at toplevel, and LOAD of the resulting fasl did
743 * bug fix: functions with non-required arguments used to end up with
744 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
745 * bug fix: redefining a function with non-required arguments didn't
746 update the system's knowledge about its call signature properly.
747 * bug fix: fixed #431; incompatible alien record type redefinitions
748 are detected and handled. (reported by Neil Haven)
749 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
750 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
752 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
753 after alien stack frames.
754 * bug fix: strings passed to mk{s,d}temp lacked null termination
756 changes in sbcl-1.0.21 relative to 1.0.20:
757 * new feature: the compiler is able to track the effective type of a
758 generic function across method addition and removal.
759 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
760 appropriately typed structure slots without locking.
761 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
762 information like those gathered by TIME using a programming-friendly
764 * new feature: TIME reports time taken even if the form performs a
765 non-local transfer of control.
766 * enhancement: reduced conservativism on GENCGC platforms: on
767 average 45% less pages pinned (measured from SBCL self build).
768 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
769 mutate constant symbols or violate declaimed type of the symbol.
770 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
771 sleeping on the semaphore in heavily contested semaphores.
772 * bug fix: semaphores and condition variables were not interrupt
774 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
775 owned by other threads anymore.
776 * bug fix: FIND on lists called KEY outside the specified
777 subsequence. (reported by budden)
778 * bug fix: LOG doesn't use single-float intermediate results when
779 given mixed integer and double-float arguments, leading to better
780 precision. (reported by Bob Felts)
781 * bug fix: LOG with base zero returned values of inconsistent type.
783 changes in sbcl-1.0.20 relative to 1.0.19:
784 * minor incompatible change: OPTIMIZE qualities
785 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
786 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
787 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
788 * documentation: some slot access efficiency guidelines have been
789 added to the user manual.
790 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
791 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
792 as ASSOC and MEMEBER.
793 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
794 to more efficient EQ-comparison versions more often.
795 * optimization: enhanced derivation of DOLIST iteration variable type
797 * optimization: constant folding of simple (LIST ...) forms as DOLIST
799 * optimization: runtime lookup of function definitions can be
800 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
801 * optimization: compiler is able to derive the return type of
802 (AREF (THE STRING X) Y) as being CHARACTER.
803 * optimization: CLRHASH on empty hash-tables no longer does pointless
804 work. (thanks to Alec Berryman)
805 * optimization: REPLACE deftransforms don't punt when :START1 or
807 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
808 no longer emits a code deletion note. (reported by Andrew
810 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
811 functions with an odd number of &OPTIONAL arguments, a &REST
812 argument, and one or more &KEY arguments at the call site.
813 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
814 arguments appeared at call sites as well.
815 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
816 READ-LINE &co can no longer read from them afterwards. (reported
818 * bug fix: fixed #427: unused local aliens no longer cause compiler
819 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
821 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
822 alien-stack leakage. (reported by Andy Hefner)
823 * bug fix: PROGV signals an error when an attempt to violate declared
824 type of a variable or bind a constant is made.
825 * bug fix: SET signals an error when an attempt to violate declared
826 type of a variable is made.
827 * bug fix: restart computation during the execution of a restart
828 test function no longer causes infinite recursion. (reported by
830 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
831 signals an error. (thanks to Pierre Mai)
832 * bug fix: EXPORT left symbol unexported in conflict situations.
833 (thanks to Michael Weber)
834 * bug fix: correctly handle name conflicts involving CL:NIL.
835 (thanks to Michael Weber)
836 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
837 conflicts arising from USEing package with conflicting symbols
838 correctly. (thanks to Michael Weber)
840 changes in sbcl-1.0.19 relative to 1.0.18:
841 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
842 warnings that go otherwise unhandled will be muffled if they are
843 of the type that's the value of this variable.
844 * optimization: stack allocation is slightly more efficient on x86
846 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
847 where a raw slot always is initialized using the initform whose
848 type is not know sufficiently well a compile-time are now compiled
849 correctly. (reported by John Morrison)
850 * bug fix: compiler no longer makes erronous assumptions in the
851 presence of non-foldable SATISFIES types.
852 * bug fix: stack analysis missed cleanups of dynamic-extent
853 arguments in non-let-converted calls to local functions.
854 * improvements to the Windows port:
855 ** adjusted address spaces for building on both Win32 and
856 Win64. (thanks for John Connors)
857 * fixed some bugs revealed by Paul Dietz' test suite:
858 ** interval arithmetic during type derivation used inexact integer
859 to single-float coercions.
860 ** arithmetic operations involving large integers and single
861 floats give the same results in compiled and interpreted code.
862 ** deriving the result type of COERCE no longer signals an error
863 if the derived type of the second argument is a MEMBER type
864 containing invalid type specifiers.
865 ** ADJOIN with constant NIL as second argument works correctly.
866 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
868 changes in sbcl-1.0.18 relative to 1.0.17:
869 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
870 profiles only the current thread.
871 * minor incompatible change: changes to SYMBOL-VALUE of constants
872 defined with DEFCONSTANT now signal an error.
873 * enhancement: SB-SPROF now has support for wallclock profiling,
874 and is also able to profile specific threads. REPORT output
875 has also additional sorting options.
876 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
878 * optimization: structure allocation has been improved
879 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
880 ** out of line constructors are ~10% faster.
881 ** inline constructors are ~15% faster.
882 ** inline constructors are capable of dynamic extent allocation
883 (generally on x86 and x86-64, in some cases on other platforms
885 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
887 * optimization: file compiler is now able to coalesce non-circular
888 lists, non-base strings, and bit-vectors. Additionally, constants
889 are never referenced through SYMBOL-VALUE at runtime.
890 * optimization: code defining methods on PRINT-OBJECT (and other
891 generic functions in the COMMON-LISP package) now loads faster.
892 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
894 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
895 fasl is now deleted. (reported by Attila Lendvai)
896 * bug fix: READ-LINE always returned NIL for the last line in files.
897 (reported by Yoshinori Tahara)
898 * bug fix: more accurate disassembly annotations of foreign function
899 calls. (thanks to Andy Hefner)
900 * bug fix: trimming non-simple strings and non-string string
901 designators when the there is nothing to trim works properly.
902 (thanks to James Knight)
903 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
904 (thanks to Travis Cross)
905 * fixed some bugs revealed by Paul Dietz' test suite:
906 ** NIL is a valid function name (regression at 1.0.13.38)
907 ** FILL on lists was missing its return value (regression at 1.0.12.27)
908 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
909 fill pointers properly (regression at 1.0.12.23)
910 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
911 displacement indices properly (regression at 1.0.12.23)
913 changes in sbcl-1.0.17 relative to 1.0.16:
914 * temporary regression: user code can no longer allocate closure
915 variable storage on stack, due to bug 419 without explicitly
916 requesting it. Please consult sbcl-devel for advice if you need to
917 use this feature in the meanwhile.
918 * new feature: runtime argument --control-stack-size can be used to
919 adjust thread default control stack size.
920 * enhancement: improved TIME output
921 ** all times are reported using the measured accuracy (milliseconds
922 for real and GC times, microseconds for everything else.)
923 ** processor cycle counts on x86 and x86-64.
924 ** interpreted forms are counted for both evaluator modes.
925 ** number of lambdas converted by the compiler is reported.
926 ** CPU percentage report (computed from real and total run time.)
927 ** more comprehensive run time reporting, using a condenced format
928 ** interperted form, lambda, and page fault counts are omitted
930 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
932 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
933 * optimization: two argument forms of LAST are upto ~10% faster
934 in normal SPEED policies.
935 * optimization: NCONC no longer needs to heap cons its &REST list
936 in normal SPEED policies.
937 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
939 * bug fix: UNION and NUNION work with :TEST-NOT once more,
940 regression since 1.0.9.1. (thanks to Eric Marsden)
941 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
942 since 1.0.15.36. (thanks to Paul Khuong)
943 * bug fix: LAST when always returned the whole list when given a bignum
944 as the second argument.
945 * bug fix: dynamic extent allocation of nested lists and vectors
946 could leak to otherwise accessible parts.
947 * bug fix: invalid optimization of heap-allocated alien variable
949 * bug fix: fasl header checking is less vulnerable to different
950 platform word lengths.
951 * bug fix: more correct assembler syntax for GNU binutils
952 2.18.50.0.4 support. (thanks to Marijn Schouten)
953 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
955 * bug fix: the fopcompiler can handle LOCALLY forms (with no
956 declarations) successfully. (reported by Attila Lendvai)
958 changes in sbcl-1.0.16 relative to 1.0.15:
959 * minor incompatible change: revert the changes to sb-posix's error
960 signaling added in 1.0.14.
961 * minor incompatible change: change PROBE-FILE back to returning
962 NIL whenever we can't get a truename, as was the case before 1.0.14.
963 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
964 inherits from ERROR instead of just CONDITION.
965 * new feature: SB-INTROSPECT can provide source locations for instances
966 as well. (thanks to Tobias Rittweiler)
967 * optimization: binding special variables now generates smaller code
968 on threaded platforms.
969 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
970 and cases where no :TEST is given but the compiler can infer that
971 the element to search is of type (OR FIXNUM (NOT NUMBER)).
972 * optimization: better LOGNOT on fixnums.
973 * optimization: modular arithmetic for a particular requested width
974 is implemented using a tagged representation unless a better
975 representation is available.
976 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
977 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
978 for wellformedness and returns a specialized vector. (reported by
979 Francois-Rene Rideau)
980 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
981 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
982 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
983 unscheduling timer at the same time as another timer fires.
984 * bug fix: don't reschedule timers for dead threads.
985 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
986 * bug fix: copying output from RUN-PROGRAM to a stream signalled
987 bogus errors if select() was interrupted.
988 * enhancement: add support for fcntl's struct flock to SB-POSIX.
990 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
991 * enhancement: cleaner backtraces for interactive interrupts, as
992 well as other cases where the interesting frames used to be
993 obscured by interrupt handling frames.
994 * enhancement: untracing a whole package using (UNTRACE "FOO") is
995 now supported, and tracing a whole package using (TRACE "FOO") now
996 traces SETF-functions as well.
997 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
998 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
999 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1000 * unreadably printed representation of hash-tables now includes
1002 * bug fix: partially fixed #188: type propagation from assignments
1003 is now more efficient.
1004 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1005 'DOUBLE-FLOAT) are not flushable.
1006 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1007 full address of the object, and none of the tag bits.
1008 * bug fix: readably printing hash-tables now respects other printer
1009 control variables. (reported by Cedric St-Jean)
1010 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1011 keyword with MAKE-HASH-TABLE.
1012 * bug fix: export SB-POSIX:MKSTEMP.
1013 * bug fix: SORT was not interrupt safe.
1014 * bug fix: XREF accounts for the last node of each basic-block as
1016 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1017 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1018 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1019 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1020 create obsolete instances in the case of redefinition or
1021 obsoletion of a superclass. (thanks to Andy Hefner)
1022 * bug fix: Support for the Alpha architecture has been revived; it had
1023 suffered somewhat from lack of maintenance since sbcl-1.0.
1024 * improvements to the Windows port:
1025 ** The system detects the codepage to use at startup, instead of
1026 using the value from the saved core. (thanks to Kei Suzuki)
1028 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1029 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1030 (see documentation for details.)
1031 * revived support for OpenBSD (contributed by Josh Elsasser)
1032 * partially fixed bug #108: ROOM no longer suffers from occasional
1033 (AVER (SAP= CURRENT END)) failures.
1034 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1035 bodies no longer cause a WARNING to be signalled. (reported by
1037 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1038 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1039 the bug in TRUNCATE.) (reported by Michael Weber)
1040 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1041 no samples. (reported by Andy Hefner)
1042 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1043 no longer appear as (NIL ...) frames in backtraces.
1044 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1045 is now actually exported from SB-EXT as documented. (reported by
1047 * bug fix: sb-aclrepl now correctly understands how to inspect
1048 single-floats on 64-bit platforms where single-floats are not boxed.
1049 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1050 yet been finalized. (reported by Levente Meszaros)
1051 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1052 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1053 SBCL-specific optimize qualities.
1055 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1056 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1057 an executable in the search path, and does so in the child
1058 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1059 been removed; it can be found in the CVS history, for somebody who
1060 needs that search behavior (see the manual).
1061 * minor incompatible change: compiler policy re. weakening type
1062 checks has changed: now type checks are weakened only if SAFETY < 2
1064 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1065 unparsing of directory pathnames as files. Analogously,
1066 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1067 filename to parse into a directory pathname.
1068 * enhancement: implicit generic function creation now signals a
1069 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1070 users can bind handlers for and muffle around calls to LOAD.
1071 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1072 to be used (using the default stream external format), and allows
1073 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1074 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1075 strings and vectors whose element-type or simplicity is not fully
1076 known at compile-time.
1077 * optimization: STRING-TRIM and related functions no longer allocate
1078 a new string when no trimming needs to be performed. These functions
1079 are also faster than before when the input string has been declared
1081 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1082 * optimization: READ-LINE is significantly faster for files containing
1084 * optimization: non-open coded uses of character comparison operators
1085 (e.g. char=) no longer cons when called with more than one parameter
1086 on platforms supporting dynamic-extent allocation.
1087 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1088 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1089 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1091 * bug fix: some sequence functions elided bounds checking when
1093 * bug fix: too liberal weakening of union-type checks when SPEED >
1095 * bug fix: more bogus fixnum declarations in ROOM implementation
1098 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1099 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1100 :SYNCHRONIZED argument, which makes the hash-table safe for
1101 concurrent accesses (but not iteration.) See also:
1102 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1103 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1104 * optimization: CONCATENATE on strings is an order of magnitude faster
1105 in code compiled with (> SPEED SPACE).
1106 * optimization: SUBSEQ is ~50% faster on lists.
1107 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1108 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1109 END is smaller then START.
1110 * bug fix: SB-PROFILE will no longer report extra consing for nested
1111 calls to profiled functions.
1112 * bug fix: ROOM implementation had bogus fixnum declarations which
1113 could cause type-errors when calling ROOM on large images.
1114 * bug fix: if file compilation is aborted, the partial fasl is now
1115 deleted, and COMPILE-FILE returns NIL as the primary value.
1116 * bug fix: number of thread safety issues relating to SBCL's internal
1117 hash-table usage have been fixed.
1118 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1119 be returned from its body when the values were being returned
1120 using unknown-values return convection and the W-P-O was wrapped
1121 inside an UNWIND-PROTECT.
1122 * bug fix: sb-posix should now compile again under Windows, enabling
1123 slime to work again.
1125 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1126 * incompatible change: hash-table accessor functions are no longer
1127 automatically protected by locks. Concurrent accesses on the same hash-table
1128 from multiple threads can give inconsistent results or even corrupt the
1129 hash-table completely. Multi-threaded applications should do their own
1130 locking at the correct granularity. In the current implementation it is
1131 still safe to have multiple readers access the same table, but it's not
1132 guaranteed that this property will be maintained in future releases.
1133 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1134 and will signal an error at runtime.
1135 * enhancement: SB-THREAD package now exports a semaphore interface.
1136 * enhancement: CONS can now stack-allocate on x86 and
1137 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1139 * enhancement: nested lists can now be stack allocated on
1140 platforms providing stack allocation support.
1141 * enhancement: dynamic-extent support has been extended to support
1142 cases where there are multiple possible sources for the stack
1144 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1145 if the mutex is uncontested on Linux.
1146 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1147 as specified by the CLHS. (thanks to Tobias Rittweiler)
1148 * bug fix: NaN comparison now works on x86-64.
1149 * bug fix: CLOSE :ABORT T on a stream with pending output now
1151 * bug fix: instances of non-standard metaclasses using standard
1152 instance structure protocol sometimes missed the slot type checks
1154 * bug fix: known functions can be inlined in high-debug code.
1156 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1157 * minor incompatible change: the MSI installer on Windows no longer
1158 associates .lisp and .fasl files with the installed SBCL.
1159 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1160 on Windows. (thanks to Luis Oliviera)
1161 * new feature: SB-CLTL2 contrib module now implements
1162 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1163 * optimization: scavenging weak pointers is now more efficient,
1164 requiring O(1) instead of O(N) per weak pointer to identify
1165 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1166 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1167 method bodies using constant slot-names when the first argument is
1168 a specializer parameter for the method.
1169 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1170 names, when the class of the instance is a direct instance
1171 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1172 as slow as the constant slot-name case.)
1173 * optimization: member type construction is now O(N) instead
1175 * optimization: UNION and NUNION are now O(N+M) for large
1176 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1178 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1179 now more readable in environments like Slime which display it.
1180 (thanks to Tobias C. Rittweiler)
1181 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1182 was able to infer the correct argument type for the object on which
1183 the CAS operation was being performed.
1184 * bug fix: copy propagation interfered with parallel assignment
1185 semantics in local calls. (reported by Paul Khuong)
1186 * bug fix: the signed modular fixnum shift compiled to wrong code on
1187 x86 and x86-64. (spotted by a slight modification to some of
1190 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1191 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1192 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1193 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1195 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1196 and generic function now print the object identity for anonymous
1197 instances. (thanks to Attila Lendvai)
1198 * enhancement: as an extension to MOP, SBCL now supports SETF of
1199 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1200 (thanks to Attila Lendvai)
1201 * enhancement: sb-cover has an alternate annotation mode which puts
1202 the form annotations at the car of the form, instead of annotating
1203 it completely. The benefit of this mode is that it shows better
1204 which forms were instrumented by the compiler.
1205 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1206 by printer control variables. (reported by Dan Corkill)
1207 * bug fix: system leaked memory when delayed output was performed by
1208 the OS in smaller chunks then expected. (thanks to David Smith)
1209 * bug fix: system leaked memory when file streams were not closed
1211 * bug fix: large objects written to slow streams that were modified
1212 after the write could end up with the modified state written to
1213 the underlying file descriptor.
1214 * bug fix: multiple threads operating in parallel on the same stream
1215 could cause buffer-overflows.
1216 * bug fix: source location information is stored correctly
1217 (broken since 1.0.6). This bug would generally show up as the
1218 Slime debugger highlighting the wrong form when the sldb-show-source
1220 * bug fix: Branch forms are again annotated as branches in the sb-cover
1222 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1223 on x86-64. (reported by Gregory Vanuxem)
1224 * bug fix: EQUALP could return wrong results for structures with raw
1225 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1226 word). (reported by Vjacheslav Fyodorov)
1227 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1230 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1231 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1232 atomic compare-and-swap operations on threaded platforms.
1233 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1234 allows assigning a global minimum value to optimization qualities
1235 (overriding proclamations and declarations).
1236 * enhancement: closed over variables can be stack-allocated on x86
1238 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1240 * optimization: slot definition lookup is now O(1). This speeds up
1241 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1242 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1243 * optimization: ASSOC and MEMBER can now be open-coded for all
1244 combinations of keyword arguments when second argument is constant
1245 and SPEED >= SPACE. In other cases a specialized version is
1247 * bug fix: using obsoleted structure instances with TYPEP and
1248 generic functions now signals a sensible error.
1249 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1250 (reported by Kristoffer Kvello)
1251 * bug fix: backtrace construction is now more careful when making
1252 lisp-objects from pointers on the stack, to avoid creating bogus
1253 objects that can be seen by the GC.
1254 * bug fix: defaulting of values in contexts expecting more than 7
1255 variables now works on x86-64. (reported by Christopher Laux)
1256 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1258 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1259 as the property-list of a symbol.
1260 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1261 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1262 situations requested, are once again file-compileable. (reported
1265 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1266 * MOP improvement: support for user-defined subclasses of
1267 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1268 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1269 the expansion of DEFMETHOD, is responsible for generating a form
1270 which creates a list of specializers when evaluated. Additional
1271 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1272 debugging and introspective support.
1273 * minor incompatible change: the (unsupported) spinlock interface
1274 has changed: free spinlock now has the value NIL, and a held spinlock
1275 has the owning thread as its value.
1276 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1277 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1279 * enhancement: name of a socket-stream is now "a socket" instead of
1280 "a constant string".
1281 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1282 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1283 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1284 for generic functions. (Thanks to Tobias C. Rittweiler)
1285 * optimization: bignum printing speed has been improved by 20-40%
1286 (depending on the bignum size.)
1287 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1289 * bug fix: the cache used by the CLOS to store precomputed effective
1290 methods, slot offsets, and constant return values is now thread and
1292 * bug fix: generic function dispatch function updating is now thread
1293 and interrupt safe (in the sense that the known issues have been
1295 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1296 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1297 * bug fix: asdf systems with dependencies to the SB-POSIX or
1298 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1299 * bug fix: interrupt safety of applicable method computation has been
1302 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1303 * new contrib: sb-cover, an experimental code coverage tool, is included
1304 as a contrib module.
1305 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1306 significantly faster.
1307 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1308 produce more efficient code on x86-64 if the compiler can determine
1309 that (+ INDEX <constant>) does not require a bounds check and FOO
1310 has an element type at least 8 bits wide.
1311 * enhancement: a new, experimental synchronous timeout facility is
1312 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1313 * enhancement: when a symbol name conflict error arises, the
1314 conflicting symbols are always printed with a package prefix.
1315 (thanks to Kevin Reid)
1316 * enhancement: stepping is now once again supported on the SPARC and
1317 MIPS platforms. (It is also now more likely to work on CheneyGC
1319 * enhancement: sb-sprof can now also track and report accurate call
1321 * bug fixes: the treatment of non-standard subclasses of
1322 SB-MOP:SPECIALIZER is more correct.
1323 * incompatible change: PURIFY no longer copies the data from the
1324 dynamic space into the static and read-only spaces on platforms
1325 that use the generational garbage collector
1326 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1328 * bug fix: GC race condition occasionally resulting in crashes with
1329 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1331 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1333 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1334 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1335 * bug fix: an asynchronous interrupt could previously leave the
1336 system running with GC inhibited.
1337 * bug fix: a DECLARE form evaluated at top-level now causes an error
1338 rather than silently (or verbosely) returning NIL.
1339 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1340 result in a error being signalled due to source form lookup errors.
1341 (reported by Peter Graves)
1343 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1344 * incompatible change: removed writer methods for host-ent-name,
1345 host-ent-addresses -- changing the values did not update the DNS
1347 * minor incompatible change: changed experimental JOIN-THREAD interface
1348 * documentation: the manual now lists reader and writer methods
1349 in class slot documentation sections. (thanks to Richard M Kreuter)
1350 * documentation: unwinding from asyncronous events has been
1351 documented as unsafe.
1352 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1353 in multithreaded application code.
1354 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1355 platforms. (thanks to James Anderson for the optimization hint)
1356 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1358 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1359 variants no longer cons.
1360 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1361 their NOT- variants no longer cons.
1362 * optimization: EQUAL hash tables no longer use SXHASH for objects
1363 of all data types, but instead use an EQL hash for types for which
1364 EQUAL is the same as EQL.
1365 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1366 are significantly faster.
1367 * optimization: new STRING-OUTPUT-STREAM implementation is much
1368 faster for large outputs and conses 30% less on average.
1369 * enhancement: XREF information is now collected for references made
1370 to global variables using SYMBOL-VALUE and a constant argument.
1371 * enhancement: SIGINT now causes a specific condition
1372 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1373 * bug fix: FILE-POSITION used to signal an error in some cases where
1374 ANSI requires it to return NIL.
1375 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1376 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1377 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1379 * bug fix: bad type declaration in the CLOS implementation has
1380 been fixed. (reported by James Anderson)
1381 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1382 (thanks to Lutz Euler)
1383 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1384 required by the CLHS. (reported by Samium Gromoff)
1385 * bug fix: dead unbound variable references now signal an error.
1386 (reported by Marco Monteiro)
1387 * bug fix: / with an unused value was being deleted in safe code.
1388 (thanks to Marco Monteiro and Kevin Reid)
1389 * bug fix: number of characters that can be written onto a single
1390 line in a file is unlimited.
1391 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1392 been fixed by inhibiting interrupts for when GC is disabled.
1393 * bug fix: some interrupt safety issues with GETHASH, (SETF
1394 GETHASH), CLRHASH and REMHASH have been fixed.
1395 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1396 specifier no longer causes infinite recursion.
1397 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1398 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1399 * bug fix: an &environment argument with the correct variable information
1400 is passed to macros that are expanded during byte compilation.
1401 (reported by Samium Gromoff)
1402 * bug fix: a logic error was causing the hash function for bignums to
1403 have excessive amounts of collisions. (reported by Faré Rideau)
1404 * bug fix: modifying the contents of an array could change the return
1405 value of SXHASH on that array, which is only allowed for strings
1406 and bit vectors. (bug introduced in 0.9.16)
1407 * improvement: the x86-64/darwin port now passes all tests (except
1408 for the debugger tests) but should still be considered
1409 experimental until this is fixed.
1410 * improvement: a style-warning is signaled for CASE (etc) clauses with
1411 duplicate keys. (thanks to Kevin Reid)
1412 * improvement: macos/x86 and macos/x86-64 now use mach exception
1413 handlers for dealing with illegal instructions (for trapping and
1414 error handling) and memory protection violations (for GC).
1416 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1417 * new platform: experimental support for x86-64/darwin (MacOS).
1418 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1419 and getnameinfo sockets functions are used instead of gethostbyaddr
1420 and gethostbyname, on platforms where the newer functions are available.
1421 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1423 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1424 don't print the startup banner, but behave as if --noinform was passed
1425 as a command line argument. (thanks to Kevin Reid)
1426 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1427 * optimization: code using alien values with undeclared types is much faster.
1428 * optimization: the compiler is now able to open code SEARCH in more cases.
1429 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1430 * bug fix: using standardized COMMON-LISP special variables as loop
1431 variables no longer signals bogus package lock violations. (reported
1433 * bug fix: declaring local loop variables to be of a range-limited type
1434 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1435 (reported by Andras Simon)
1436 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1437 bugs remain on x86-64.)
1438 * bug fix: the #= and ## reader macros now interact reasonably with
1439 funcallable instances.
1440 * bug fix: type-checks for function arguments were compiled using the
1441 compiler policy settings of the wrong lexical environment (in 1.0.2
1443 * bug fix: SHADOW accepts characters as string designators, as required
1444 by the spec (thanks to Eric Marsden)
1445 * bug fix: fixed GC safety issues when foreign functions are called with
1446 non-base strings as arguments
1447 * bug fix: more consistent error output for fatal-compiler-warnings, like
1449 * bug fix: functions with proper names were showing up as NIL in
1450 backtraces (reported by Edi Weitz, regression in 1.0.2)
1452 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1453 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1454 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1455 produce more efficient code on the x86 if the compiler can determine
1456 that (+ INDEX <constant>) does not require a bounds check and FOO
1457 has an element type at least 8 bits wide.
1458 * bug fix: references to undefined variables are handled the same way
1459 in toplevel forms as in the normal compiler
1460 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1462 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1463 (thanks to Jon Buller)
1464 * improvement: faster compilation times for complex functions
1465 * improvement: added readlink support to SB-POSIX (thanks to Richard
1468 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1469 * improvement: experimental support for mach exception handling on
1470 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1472 * improvement: support for GBK external format.
1473 (thanks to Chun Tian (binghe))
1474 * improvement: the debugger now displays variables that have been closed
1475 over, in code compiled with (DEBUG 2) or higher
1476 * improvement: support for executable cores on NetBSD (thanks to
1478 * new feature: added a RESTART-FRAME debugger command
1479 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1480 be used to provide an implementation for FILE-POSITION on Gray streams
1481 (thanks to Eric Marsden)
1482 * new feature: add syslog, openlog and closelog support to SB-POSIX
1483 (thanks to Richard Kreuter)
1484 * optimization: the function call overhead in code compiled with
1485 a high DEBUG optimization setting is significantly
1486 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1487 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1488 (thanks to Tony Martinez)
1489 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1490 evaluated once (reported by Kevin Reid)
1491 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1492 works again (thanks to Kilian Sprotte)
1493 * bug fix: an error is signaled for tagbodies with duplicate tags
1494 (thanks to Stephen Wilson)
1495 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1496 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1497 stack frames from alien callbacks.
1498 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1499 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1500 65k pages (thanks to David Woodhouse)
1501 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1503 changes in sbcl-1.0.1 relative to sbcl-1.0:
1504 * new platform: FreeBSD/x86-64, including support for threading.
1505 * new feature: the compiler stores cross-referencing information
1506 about function calls (who-calls), macroexpansion (who-macroexpands)
1507 and special variables (who-binds, who-sets, who-references) for code
1508 compiled with (< SPACE 3). This information is available through the
1509 sb-introspect contrib.
1510 * new feature: users may subclass SEQUENCE, and have instances of
1511 these classes interoperate with standard Common Lisp functions if
1512 a number of methods are defined. (This feature is experimental
1513 and the interface subject to change based on feedback from SBCL
1514 users and the general community)
1515 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1516 x86/x86-64, rather than the previous fixed depth of 8
1517 * improvement: another pthread back-end of mutex "pthread-futex".
1518 * bug fix: non-ascii command-line arguments are processed correctly
1519 (thanks to Yaroslav Kavenchuk)
1520 * bug fix: non-required arguments were not passed correctly when a method
1521 defined using DEFMETHOD was called from a mop-generated method using
1522 CALL-NEXT-METHOD (reported by Pascal Costanza)
1523 * bug fix: recursion is now permitted in accessors through
1524 SLOT-UNBOUND. (reported by Pascal Costanza)
1525 * bug fix: an error was signaled at startup if the HOME environment
1526 variable was defined, but had an empty value (reported by Peter Van Eynde)
1527 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1528 signal a PROGRAM-ERROR, not a BUG.
1529 * bug fix: SB-POSIX:READDIR works when built with large file support.
1530 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1532 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1533 for better automatic indentation support. (thanks to Matt Pillsbury)
1534 * optimization: loading generic functions no longer takes O(n^2) time,
1535 proportional to the amount of methods in the generic function
1536 (reported by Todd Sabin and Jeremy Brown)
1537 * optimization: the FIND and POSITION family of sequence functions
1538 are significantly faster on arrays whose element types have been
1540 * improvements to the Windows port:
1541 ** Intermittent heap corruption problems have been fixed. (thanks
1542 to Alastair Bridgewater)
1543 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1545 ** Lisp is able to unwind foreign exception frames from alien
1546 callbacks. (thanks to Alastair Bridgewater)
1548 changes in sbcl-1.0 relative to sbcl-0.9.18:
1549 * improvement: experimental support for threading on FreeBSD/x86.
1550 (thanks to NIIMI Satoshi)
1551 * improvement: runtime option --dynamic-space-size can be used
1552 to set the size of the dynamic space reserved on startup.
1553 * improvement: floating point modes in effect are now saved in
1554 core, and restored on startup.
1555 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1556 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1557 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1558 threads are not running after *SAVE-HOOKS* have run.
1559 * improvement: writes to CLOS instance slots are type-checked in code
1560 compiled with (SAFETY 3)
1561 * improvement: floating-point exception handling on FreeBSD (thanks to
1563 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1564 (thanks to Zach Beane)
1565 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1567 * improvement: added support for the Shift-JIS external format.
1568 (contributed by NIIMI Satoshi)
1569 * improvement: callbacks are supported on Linux/PPC. (thanks to
1571 * bug fix: compiler bug triggered by a (non-standard) VALUES
1572 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1573 * bug fix: file compiler no longer confuses validated and already
1574 dumped structurres. (reported by Kaersten Poeck)
1575 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1576 fill-pointer signals a type-error as required. (thanks to
1578 * bug fix: disassemly of funcallable instances works.
1579 * bug fix: single stepping on PPC.
1580 * bug fix: fix thread-safety problems in the type system (generally
1581 manifesting as nonsensical errors like "STRING is a bad type specifier
1582 for sequences" or "The value 1 is not of type FIXNUM")
1583 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1584 (reported by Josip Gracin)
1585 * bug fix: an error is signaled for attempts to displace arrays with
1586 incompatible element types (thanks to Mario Mommer)
1587 * bug fix: more correct handling of wide characters in debug info
1588 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1589 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1590 and don't cause extra consing
1591 * optimization: MAP and MAP-INTO are significantly faster on vectors
1592 whose elements types have been declared.
1593 * Improvements to SB-SPROF:
1594 ** Support for allocation profiling
1595 ** Reduced profiling overhead, especially for long profiling runs
1596 * Improvements to the Windows port:
1597 ** floating point exceptions are now reported correctly.
1598 ** stack exhaustion detection works partially.
1599 ** more accurate GET-INTERNAL-REAL-TIME.
1600 ** better RUN-PROGRAM behaviour in case of errors in the child
1602 ** PROBE-FILE now simplifies pathnames correctly.
1603 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1604 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1605 1st 1970 (although time timezone data will be unreliable).
1606 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1608 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1609 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1610 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1612 * bug fix: two potential GC deadlocks affecting threaded builds.
1613 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1614 returns T (reported by Anton Kazennikov)
1615 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1616 with non-variable places
1617 * bug fix: remove a race condition in the setting of
1618 funcallable-instance functions, this should make threaded CLOS
1619 code more stable against memory faults.
1620 * bug fix: corruption of specials when unbinding is interrupted by an
1621 asynchronous unwind (reported by Hannu Koivisto)
1622 * improvement: the debugger will now also display local variables that
1623 are only used once, for code compiled with a DEBUG optimization quality
1626 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1627 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1628 * incompatible change: External-format support for FFI calls. The
1629 SB-ALIEN:C-STRING no longer implies an ASCII
1630 external-format. Instead the string is subject to external-format
1631 conversion. Additionally return values of type SB-ALIEN:C-STRING
1632 are by default of type (SIMPLE-ARRAY CHARACTER), not
1633 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1634 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1635 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1636 * incompatible change: SB-EXT package no longer contains the
1637 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1638 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1640 * incompatible change: the single-stepper is no longer available
1641 on Alpha, Mips and Sparc platforms.
1642 * minor incompatible change: the direct superclasses of
1643 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1644 not (STANDARD-OBJECT FUNCTION). This makes the
1645 class-precedence-lists of GENERIC-FUNCTION and
1646 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1648 * minor incompatible change: the default stream external format on
1649 non-unicode SBCL is no longer detected from the locale, but is always
1651 * new feature: Add a version of evaluator that uses an interpreter instead
1652 of the compiler. EVAL still uses the compiler by default, to switch it
1653 to use the interpreter, set the value of the variable
1654 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1655 * minor incompatible change: the single-stepper REPL has been merged
1656 with the normal debugger (see the "Stepping" heading of the debugger help
1657 for more details). The debugger command STEP will no longer switch
1658 to the single-stepper REPL.
1659 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1660 for a type now works.
1661 * bug fix: loading of default sysinit file works. (thanks to Leonid
1663 * bug fix: better detection of circularities in the file-compiler.
1664 (reported by Marco Monteiro)
1665 * bug fix: the CL pathname functions now work with files that have
1666 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1667 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1668 systems with Unix98 pty semantics.
1669 * bug fix: ASDF-INSTALL will now work with bsd tar.
1670 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1672 * bug fix: timers expiring in dead threads no longer cause a
1673 type-error (reported by Paul "Nonny Mouse").
1674 * bug fix: thanks to more lightweight single-stepper instrumentation,
1675 code compiled with (DEBUG 3) will compile and execute significantly faster,
1676 and will have more accurate type-inferencing than before
1677 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1678 whose bindings are modified
1679 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1680 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1681 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1682 CL:SOFTWARE-VERSION with proper version
1684 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1685 * feature: implemented the READER-METHOD-CLASS and
1686 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1687 as specified by AMOP.
1688 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1690 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1691 (thanks to Lutz Euler)
1692 * optimization: hashing of general arrays and vectors has been
1693 improved. (reported by Any Fingerhut)
1694 * enhancement: SB-INTROSPECT is now able to find definitions of
1695 profiled functions. (thanks to Troels Henriksen)
1696 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1697 as well, allowing compiler-macros for SETF-functions to expand.
1698 * enhancement: step-instrumentation no longer wraps known
1699 single-value functions with multiple-value context, allowing
1700 better type inference.
1701 * fixed bug #337: use of MAKE-METHOD in method combination now works
1702 even in the presence of user-defined method classes. (reported by
1703 Bruno Haible and Pascal Costanza)
1704 * fixed bug #339(c): if there are applicable methods not part of any
1705 long-form method-combination group, call INVALID-METHOD-ERROR.
1706 (reported by Bruno Haible)
1707 * fixed bug #361: the :FUNCTION initarg in the protocol for
1708 initialization of methods can now be used to override
1709 internally-produced optimized functions. (reported by Bruno
1711 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1712 system-provided lambda expression no longer cause warnings about
1713 unbound #:|pv-table| symbols.
1714 * bug fix: improved the handling of type declarations and the
1715 detection of violations for keyword arguments with non-constant
1717 * bug fix: potentially erronous calls to PATHNAME and
1718 MERGE-PATHNAMES were being flushed in some cases.
1719 (reported by Richard Kreuter)
1720 * bug fix: compiled calls to TYPEP were mishandling obsolete
1721 instances. (reported by James Bielman and Attila Lendvai)
1722 * bug fix: format strings with ~> without matching ~< no longer
1723 trigger an AVER, but signal an understandable error instead.
1724 (reported by Antonio Martinez)
1725 * bug fix: specifying an output-file without a pathname-type for
1726 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1727 of input-file instead of "fasl". (reported by Robert Dodier)
1728 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1729 (reported by James Y Knight).
1730 * bug fix: compiler-macros-function did not consider the environment
1731 argument for shadowing by local functions.
1732 * bug fix: compiler-macros expansion was inhibited by local INLINE
1734 * bug fix: inline expansions of known functions were subject to
1735 step-instrumentation in high debug policies, leading to problems
1736 with type-inference.
1737 * bug fix: compiler failed to differentiate between different CONS
1738 types in some cases.
1739 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1740 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1741 * bug fix: #368: incorrect use of expressed vs. upgraded array
1743 * bug fix: #306a: more precise unions of array types.
1744 * thread-safety improvements:
1745 ** CONDITION-WAIT could return early on Linux, if the thread was
1746 interrupted and subsequently continued with SIGCONT.
1747 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1749 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1750 * added support for the ucs-2 external format. (contributed by Ivan
1752 * minor incompatible change: pretty printing of objects of type
1753 (cons symbol) is, in the default pprint-dispatch-table, now
1754 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1756 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1757 called later in a class's lifetime, possibly as late as when the
1758 first instance of the class is created. Previously,
1759 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1760 class became finalizeable.
1761 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1762 for multibyte external-format streams. (thanks to "vbzoli")
1763 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1764 with :ALLOCATION :CLASS inherited from superclasses of the
1766 * fixed bug: anonymous classes can now be created using the :NAME
1767 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1768 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1769 * fixed bug: core-files saved with :EXECUTABLE T can again be
1770 executed when SBCL_HOME isn't set. (reported by James Knight)
1771 * fixed bug: toplevel LOCALLY forms with declarations could
1772 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1773 * fixed bug: printing from several different threads using different
1774 values of *print-case* could cause invalid output, due to
1775 some internal special variables of the printer not being bound
1776 thread-locally (reported by Max Mikhanosha)
1777 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1778 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1779 (reported by Pascal Costanza)
1780 * fixed bug: FINALIZE-INHERITANCE is called from
1781 REINITIALIZE-INSTANCE on classes when the class has previously
1782 been finalized, as required by AMOP.
1783 * minor code generation optimizations:
1784 ** better register allocation in CLOS dispatching functions
1785 ** overflow detection when coercing signed bytes to fixnums on x86-64
1786 ** is now implemented with one IMUL instruction instead of three shifts
1787 ** more efficient bit-vector access on x86 and x86-64
1788 ** more efficient access to raw structure slots on x86 and x86-64
1789 * fixed some bugs revealed by Paul Dietz' test suite:
1790 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1791 return its argument.
1793 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1794 * feature: thread support on Solaris/x86, and experimental thread support
1796 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1798 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1799 default method for SLOT-UNBOUND.
1800 * minor incompatible change: prevent the user from specializing the
1801 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1802 somewhat counter to the intent of the protocol, I (CSR) think, and
1803 additionally it just doesn't work in SBCL as currently
1804 implemented, thanks to optimizations (that are always valid for
1805 the other three SLOT-VALUEish functions, but not for the setter).
1806 * minor incompatible change: the :SB-LDB feature is now enabled by
1807 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1808 the low-level debugger.
1809 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1810 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1811 down to an SB-SYS:FD-STREAM, allowing direct communication in
1812 more cases. Temporary files and pipes are still used as a fallback
1814 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1815 on the non-reentrant C functions localtime(3) and gmtime(3).
1816 * bug fix: global optimization policy was not visible in LOCALLY and
1818 * bug fix: class objects can be used as specializers in methods.
1819 (reported by Pascal Costanza)
1820 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1821 with a type error. (reported by blitz_ on #lisp)
1822 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1823 failed with a type error. (reported by Pascal Bourguignon)
1824 * bug fix: merging pathnames against defaults with :DIRECTORY
1825 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1826 (reported by James Y Knight)
1827 * bug fix: saving large (>2GB) cores on x86-64 now works
1828 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1829 constant index and a (simple-array (signed-byte 32)) array
1830 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1831 error (patch by Robert J. Macomber)
1832 * feature: TIME now displays the amount of run-time spent in GC
1833 * bug fix: The debugger now does a better job of respecting
1834 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1835 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1836 workaround for bug 403.)
1837 * bug fix: floating point exception handling now works on FreeBSD
1838 (thanks to NIIMI Satoshi)
1839 * fixed some bugs revealed by Paul Dietz' test suite:
1840 ** MISC.641: LET-conversion were not supposed to work in late
1842 * improvements to the Win32/x86 port:
1843 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1844 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1846 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1847 * new feature: source path information is generated for macro-expansion
1848 errors for use in IDE's like Slime (thanks to Helmut Eller)
1849 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1850 * bug fix: compiler does not loop forever on an invalid type in
1852 * improvement: compilation of most CLOS applications is significantly
1854 * optimization: added a limited bytecode compiler for simple toplevel
1855 forms, speeding up compilation and FASL loading
1856 * bug fix: the statistical profiler now properly distinguishes anonymous
1859 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1860 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1861 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1862 into subclasses of the finalized class. Now user calls to
1863 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1864 system return before any subclasses are finalized.
1865 * minor incompatible change: The reader no longer ignores errors
1866 regarding non-existent packages in #+ and #- feature tests.
1867 * new feature: command line options --no-sysinit, --no-userinit to
1868 inhibit loading the corresponding init files
1869 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1870 for sending data through UDP sockets (thanks to François-René Rideau)
1871 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1872 error is signalled instead (thanks to François-René Rideau)
1873 * minor incompatible change: Error signalling behaviour of lexical
1874 operations violating package locks has changed slightly. Refer to
1875 documentation on package locks for details.
1876 * enhancement: EVAL can process IF-expressions without resorting to the
1878 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1879 constant-folded properly due to missing out-of-line functions.
1880 (reported by Mika Pihlajamäki)
1881 * bug fix: LISTEN sometimes returned T even in cases where no data was
1882 immediately available from the stream
1883 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1884 were reversed. (reported by Levente Mészáros)
1885 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1886 when given a vector displaced to an adjustable array. (reported
1888 * bug fix: derivation of float boundaries from numbers outside the
1889 appropriate float range (reported by John Wiseman)
1890 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1892 * bug fix: precomputing cache entries for generic functions with
1893 some subclasses of specializers as yet invalid does not attempt to
1894 fill a cache line with a negative offset. (reported by Levente
1896 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1897 allow condition class objects as arguments to DOCUMENTATION and
1898 (SETF DOCUMENTATION); only find and set documentation for
1899 structure names for the STRUCTURE doc-type. (suggested by Gary
1901 * improvements to the Win32/x86 port:
1902 ** (user-homedir-pathname) and default initialization file
1903 locations now know about the user's "Documents and Settings"
1904 directory (thanks to Yaroslav Kavenchuk)
1905 ** run-program is implemented (thanks to Mike Thomas)
1906 ** sockets support (thanks to Timothy Ritchey)
1907 ** better backtrace support (thanks to Alastair Bridgewater)
1908 ** sb-grovel supported
1909 ** asdf-install and sb-posix work somewhat
1910 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1911 * improvements to the Solaris/x86 port:
1912 ** works on Solaris 11/Solaris Express
1913 ** floating-point exception handling support
1914 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1915 * fixed some bugs revealed by Paul Dietz' test suite:
1916 ** REMOVE-METHOD returns its generic function argument even when
1917 the method is not one of the generic functions' methods.
1918 ** objects declared as MEMBER types can be admissible arguments to
1919 structure accessors.
1920 ** printing characters should simply be printed by the FORMAT ~:C
1922 ** compiler failure when compiling functions with hairy constant
1923 defaults for optional parameters.
1924 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1925 function, which is already optimized.
1927 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1928 * new platform: experimental support for SBCL x86/Darwin, including
1929 MacOS X 10.4.5 on Intel.
1930 * new feature: Unicode character names are now known to the system
1931 (through CHAR-NAME and NAME-CHAR).
1932 * new feature: the filesystem location of SBCL's core file is
1933 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1934 * minor incompatible change: the contrib modules SB-POSIX and
1935 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1936 this change is to make it easier to distribute
1937 location-independent binaries.
1938 * bug fix: as implied by AMOP, standardized classes no longer have
1939 slots named by external symbols of public packages. (reported by
1941 * optimization: calling functions via constant symbols -- as in
1942 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1943 via the function object as in (FUNCALL #'FOO).
1944 * optimization: on x86 and x86-64, the calling convention for the
1945 case of dealing with an unknown number of values has been altered
1946 to be friendlier to the prediction heuristics implemented,
1947 particularly with reference to CALL and RET pairing. (thanks to
1948 Alastair Bridgewater)
1949 * optimization: on x86, the code for access to thread-local symbol
1950 values and binding/unbinding of thread-local symbols is smaller.
1951 (thanks to Alastair Bridgewater)
1952 * enhancement: CONSTANTP is now able to determine constantness of
1953 more complex forms, including calls to constant-foldable standardized
1954 functions and some special forms beyond QUOTE.
1955 * fixed bug: occasional GC crashes on Solaris/x86
1956 * optimization: x86-64 supports stack allocation of results of simple
1957 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1958 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1959 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1960 (thanks to James Knight)
1961 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1962 by the standard (thanks to Stephen Compall)
1964 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1965 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1966 be used for bundling the runtime and the core file into one
1967 executable binary. This feature is not currently supported on all SBCL
1968 platforms. (thanks to James Bielman and NIIMI Satoshi)
1969 * new feature: a generational or ephemeral garbage collector is now
1970 the default on the PowerPC platform (both Linux and Darwin). The
1971 old Cheney (stop and copy) collector is a build-time option.
1972 (thanks to Cyrus Harmon, after Raymond Toy)
1973 * minor incompatible change: the method by which SBCL finds its
1974 contributed modules has changed; it no longer relies on symbolic
1975 links from an $SBCL_HOME/systems directory, but searches directly
1976 in the subdirectories of $SBCL_HOME.
1977 * enhancement: the dynamic heap size on the Linux/PPC platform is
1978 markedly larger, even using the older Cheney garbage collector.
1979 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1980 certain complicated string types. (reported by Gary King)
1981 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1982 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1983 * fixed bug: DOCUMENTATION on structures no longer signals an
1984 error if no structure type of the right name exists. (reported by
1986 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1987 applicable non-standard primary or :AROUND method on
1988 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1989 no longer cause unbound variable errors. (reported by Kevin Reid)
1990 * fixed bug: metacircle resolution in cases where methods have slots
1991 added before the slots from STANDARD-METHOD. (reported by Jean
1993 * fixed bug: the Power PC assembly code for calling into lisp
1994 sometimes computed its return address wrongly (depending on the
1995 15th bit of the address, fixed at link time). This used to
1996 manifest itself in a segmentation violation while building PCL.
1997 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1998 many others over the years)
1999 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2000 the stack pointer (treated as a signed integer) is negative.
2001 (thanks to Peter van Eynde)
2003 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2004 * new platform: experimental support for the Windows operating
2005 system has been added. (thanks to Alastair Bridgewater)
2006 * fixed several bugs in and robustified the PPC FFI (including
2007 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2008 * bug fix: allow non-simple string symbol names (reported by Paul
2010 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2012 * bug fix: saving a core corrupted callbacks on x86/x86-64
2013 * bug fix: closed a loophole in metacircularity detection and
2014 grounding in the PCL implementation of CLOS.
2015 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2016 (reported by tomppa on #lisp)
2017 * bug fix: clear the direction flag on Lisp -> C transitions, as
2018 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2019 (reported by Andrej Grozin and Hendrik Maryns)
2020 * optimization: major improvements to GC efficiency on GENCGC platforms
2021 * optimization: faster implementation of EQUAL
2022 * optimization: emit more efficient opcodes for some common
2023 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2024 * optimization: several other minor code-generation improvements on x86-64
2025 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2027 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2028 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2029 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2030 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2031 by ANSI as a generic function, and for consistency (SETF
2032 GENERIC-FUNCTION-NAME) is treated likewise.
2033 * fixed bug #233.b: make constraint propagation notice when a variable
2034 value is changed after it is referenced but before it is used
2035 * fixed bug #296: no more arbitrary behaviour from filenames with
2036 odd characters as --load arguments. (reported by Adam Warner)
2037 * fixed bug #390: :CHARACTER-SET pathname components now work as
2038 expected. (reported by Tim Daly Jr)
2039 * fixed bug #391: complicated :TYPE intersections in slot
2040 definitions no longer cause an error in PCL internals.
2041 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2042 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2043 returning the number of octets which would be written to the
2044 file-stream. (thanks to Robert J. Macomber)
2045 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2046 arguments to the internal stream functions. (thanks to David
2048 * bug fix: stack exhaustion is now handled on the x86/SunOS
2049 platform. (thanks to Daisuke Homma)
2050 * bug fix: more accurate ROOM results on GENCGC platforms
2051 * optimization: improved type inference for arithmetic-for
2052 index variables in LOOP
2053 * optimization: faster floating-point SQRT on x86-64
2054 * fixed some bugs revealed by Paul Dietz' test suite:
2055 ** DOCUMENTATION returns NIL instead of "" for method combinations
2056 that don't have a docstring
2058 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2059 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2060 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2061 therefore are not customizeable by user code (as seems to be at
2062 least permitted and maybe required by AMOP). As a consolation,
2063 however, the SBCL implementation of these functions now calls
2064 REINITIALIZE-INSTANCE as specified by AMOP.
2065 * bug fix: slot-definition documentation is propagated as per ANSI
2066 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2067 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2068 argument, as do eslotd initialization methods. (from Pascal
2069 Costanza's "Closer" project)
2070 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2071 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2073 * bug fix: it is now possible to have more than one subclass of
2074 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2075 (reported by Bruno Haible, Pascal Costanza and others)
2076 * bug fix: the dependent update protocol now works for generic
2077 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2078 and Pascal Costanza)
2079 * bug fix: condition-class instances corresponding to
2080 DEFINE-CONDITION forms are now created eagerly. (reported by
2081 Kalle Olavi Niemitalo on comp.lang.lisp)
2082 * bug fix: floating point printing is more accurate in some
2083 circumstances. (thanks to Simon Alexander)
2084 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2085 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2086 * bug fix: callbacks on OS X now preserve stack-alignment.
2087 (thanks to Cyrus Harmon)
2088 * enhancement: the x86-64 disassembler is much better at
2089 disassembling SSE instructions. (thanks to Lutz Euler)
2090 * enhancement: CHECK-TYPE on a variable now allows type-inference
2091 (thanks to Vincent Arkesteijn)
2092 * optimization: improved performance of EUC-JP external format.
2093 (thanks to NIIMI Satoshi)
2094 * optimization: performance improvements to IO on file streams of
2095 :ELEMENT-TYPE CHARACTER
2096 * optimization: much faster memory allocation on x86-64
2097 * optimization: faster garbage collections (latency and throughput)
2099 * optimization: faster bignum subtraction and division on x86 and x86-64
2100 (thanks to Lutz Euler)
2101 * optimization: more accurate type-inference for loops that use a
2102 floating point index variable or a negative step.
2104 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2105 * bug fix: add a workaround to SBCL looping infinitely at startup on
2106 Linux kernels with apparently buggy implementations of personality().
2107 (thanks to Svein Ove Aas)
2108 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2109 (thanks to David Lichteblau)
2110 * bug fix: local bindings shadow global symbol macros for
2111 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2112 * optimization: non-open coded uses of numeric comparison operators
2113 (e.g. >) no longer cons when called with more than one parameter
2114 on platforms supporting dynamic-extent allocation.
2115 * enhancement: saving cores with foreign code loaded is now supported
2116 on MIPS/Linux in addition to the previously supported platforms.
2117 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2118 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2119 * bug fix: division by zero in sb-sprof when no samples were collected
2120 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2121 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2122 (thanks to Alexander Kjeldaas)
2123 * new feature: ignoring the return values of destructive functions
2124 like NREVERSE signals a compile-time style-warning.
2125 (thanks to Kevin Reid)
2126 * new feature: the alignment of alien structure fields can be
2127 explicitly specified. (thanks to Cyrus Harmon)
2128 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2129 and dump core on SIGQUIT
2131 ** incompatible change: threads do not inherit values of specials
2132 from their parents (see manual)
2133 ** bug fix: threads stacks belonging to dead threads are freed by the
2134 next exiting thread, no need to gc to collect thread stacks anymore
2135 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2136 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2137 ** bug fix: dynamic variable and thread start related gc lossage
2138 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2140 * fixed some bugs revealed by Paul Dietz' test suite:
2141 ** SUBTYPEP is slightly more accurate on heinously complicated
2142 CONS types where some of the members have uncertain (in the
2143 NIL, NIL sense) type relationships to each other.
2145 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2146 no longer purified unless :PURIFY T is explicitly specified.
2147 ** Non-purified cores are significantly smaller than before
2149 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2150 * new feature: timers based on Zach Beane's excellent timer package
2151 * added support for the following external formats: koi8-u,
2152 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2153 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2154 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2155 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2156 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2157 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2158 * incompatible change: a threaded SBCL will no longer revert to
2159 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2160 * bug fix: interrupts are disabled until startup is complete; no
2161 more sigsegvs when receiving a signal to soon
2162 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2164 * bug fix: add a workaround for the memory randomization features in
2165 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2166 workaround will only be in effect on systems with the proc filesystem
2168 * bug fix: printing objects of type HASH-TABLE signals a
2169 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2171 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2172 have been running for over 50 days. (reported by Gilbert Baumann)
2173 * bug fix: the logic for getting names of functions gets less
2174 confused when confronded with alternate-metaclass
2175 funcallable-instances. (reported by Cyrus Harmon)
2176 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2177 consistent, even on internal alternate-metaclass objects.
2178 * bug fix: flush closure information collected by physical
2179 environment analysis prepass before the main pass. (bug reported
2181 * bug fix: compiler pack phase does not modify a hashtable, which is
2182 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2183 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2184 may be expanded. (reported by Alexander <malishev> on c.l.l)
2185 * bug fix: no more style-warnings when compiling code using LAST
2186 under high-SPEED low-SPACE settings. (reported by David Wallin
2188 * fixed some incompatibilities between SBCL's MOP and the MOP
2190 ** the METAOBJECT class is now implemented;
2191 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2192 STANDARD-OBJECT, as required;
2193 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2194 now compatible (as required by VALIDATE-SUPERCLASS); there
2195 remains a consistency requirement over the presence or absence
2196 of the FUNCTION class in the superclass list of finalized
2197 classes; see the manual for more details;
2198 ** the :AROUND method for COMPUTE-SLOTS on
2199 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2200 requested slot ordering.
2202 ** bug fix: parent thread now can be gc'ed even with a live
2204 ** bug fix: binding a special with PROGV to no value is not
2205 the same as that symbol not having been bound (thanks to
2207 ** bug fix: binding specials is thread safe (thanks to
2209 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2210 and SB-SPROF do not die with 'no handler for signal XX in
2211 interrupt_handle_now(..)' anymore
2212 ** bug fix: WITH-TIMEOUT works with multiple running threads
2213 * fixed some bugs revealed by Paul Dietz' test suite:
2214 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2215 the :method-class keyword argument.
2217 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2218 * new port: the Solaris operating system on x86 processors is now
2219 mostly supported, though some rough edges in the environment
2220 remain. (thanks to Daisuke Homma)
2221 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2222 space for its heap. (thanks to Thiemo Seufer)
2223 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2224 closures. (thanks to Thiemo Seufer)
2225 * minor incompatible change: eof selects abort in the debugger.
2226 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2227 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2229 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2230 deprecated, and will go away in a future revision of SBCL.
2231 * minor incompatible change: GC-ON and GC-OFF are no longer
2232 implemented with a counter, it does not matter how many times gc
2233 is switched on or off
2234 * bug fix: discriminating functions for generic function classes
2235 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2236 make invalid assumptions about method precedence order. (reported
2238 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2239 platforms. (thanks to Thiemo Seufer)
2240 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2241 * bug fix: correct pathname printing with printer escaping is on.
2242 (thanks to Kevin Reid)
2243 * bug fix: complex VOP definitions in "user-space" no longer trigger
2244 package locks. (reported by Zach Beane)
2245 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2246 for funcallable-instance functions, and is no different from
2248 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2249 characters in the current readtable. (reported by Nicholas Neuss)
2250 * bug fix: SUBTYPEP on various CONS types returns more a more
2251 accurate acknowledgment of its certainty.
2252 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2253 lists in some cases. This partially fixes bug 384.
2254 * flush all standard streams before prompting in the REPL and the
2256 * bug fix: signal handling and triggering gc do not conflict
2257 directly anymore, in particular a high frequency sb-sprof does
2258 not prevent gc from running
2259 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2260 approximation for timezone and DST information between the
2261 universal time epoch and the smallest negative 32-bit time_t.
2262 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2263 year 1899 so long as the encoded time is non-negative.
2264 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2265 the correct answer for non-constant rotate amounts when performing
2266 an inline 32-bit rotation.
2268 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2269 there is only one thread in the session
2270 ** bug fix: memory leak for streams created in one thread and
2271 written to in another
2272 ** bug fix: lockup when compiled with gcc4
2273 ** bug fix: race that allows the gc to be triggered when gc is
2275 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2276 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2278 ** bug fix: finished threads are gc'ed properly
2279 * fixed some bugs revealed by Paul Dietz' test suite:
2280 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2281 has arguments with a different set of applicable methods from
2282 the orignal arguments.
2283 ** The type error thrown by MAP now has a correct expected-type
2285 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2286 name a compiled function.
2287 ** Three MISC tests where a large bignum was improperly coerced to
2288 a float that couldn't represent that bignum during type
2289 derivation were fixed.
2290 ** SUBTYPEP can now handle types involving the negation of a
2291 list-form FUNCTION type.
2292 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2293 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2294 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2296 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2297 * New feature: Experimental support for bivalent streams: streams
2298 opened with :element-type :default now allow character and binary
2299 (unsigned-byte 8) I/O
2300 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2301 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2303 * bug fix: no more highly sporadic "couldn't check whether ~S is
2304 readable" when reading a stream and an interrupt hits in the middle
2305 of a select system call
2306 * compiler better recognizes complex arrays (reported by Eduardo
2308 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2309 for variables on SBCL built with linkage-tables. (reported by Luis
2311 * various error reporting improvements.
2312 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2313 (Thanks to Thiemo Seufer)
2314 * bug fix: nested reader invokations work correctly
2315 * bug fix: it is possible to have simultaneous references to foreign
2316 code and foreign data with the same name.
2318 ** added x86-64 support
2319 ** incompatible change: the threading api now works with thread
2320 objects instead of thread ids
2321 ** bug fix: threads are protected from signals and interruption when
2322 starting up or going down
2323 ** bug fix: a race where an exiting thread could lose its stack to gc
2324 ** bug fix: don't halt on infinite error in threads if possible
2325 ** fixed numerous gc deadlocks introduced in the pthread merge
2326 ** bug fix: fixed thread safety issues in read and print
2327 ** bug fix: debugger doesn't hang on session lock if interrupted at
2328 an inappropriate moment
2329 ** bug fix: run-program is now thread safe(r)
2330 ** bug fix: inner with-recursive-lock no longer releases the mutex
2331 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2332 * fixed some bugs revealed by Paul Dietz' test suite:
2333 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2334 EXPECTED-TYPE slots filled.
2335 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2337 ** MAKE-CONDITION accepts classes as type-designators.
2338 ** COMPILE may never return NIL.
2339 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2340 range before calling Unix time functions
2342 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2343 * numerous signal handling fixes to increase stability
2344 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2345 * minor incompatible change: we now correctly canonize default
2346 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2347 as per the MOP, rather than the historical (INITARG INITFUNCTION
2348 INITFORM). (reported by Bruno Haible)
2349 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2350 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2351 for more information.
2352 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2353 pathname is a directory pathname.
2354 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2355 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2357 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2358 :METACLASS argument in addition to a class name. (reported by
2359 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2360 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2361 (reported by Bruno Haible; patch from Gerd Moellmann)
2362 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2364 * bug fix: more cleanups to the floating point exception handling on
2365 x86-64 (thanks to James Knight)
2366 * bug fix: the compiler does not try to constant fold calls of
2367 COERCE and BIT-* functions when they return freshly constructed
2368 objects. (reported by Nikodemus Siivola and Paul Dietz)
2369 * optimization: improved the MIPS versions of generic (in the
2370 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2371 * optimization: direct conversion of (unsigned-byte 32) to floats on
2372 the PowerPC platform.
2373 * optimization: structure instances with raw slots now use less
2374 memory, and probably show better memory locality. (thanks to
2376 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2377 are treated as requests for stack allocation on the x86-64,
2378 Alpha-32, PPC and SPARC platforms.
2379 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2380 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2381 (thanks to Tony Martinez)
2383 ** gcing a dead thread can no longer lead to lockups
2384 ** threads block signals until they are set up properly
2385 ** errno is no longer shared by threads
2386 ** interrupt-thread restores the eflags register on x86
2387 ** fixed some lockups due to gc/thread interaction
2388 * fixed some bugs revealed by Paul Dietz' test suite:
2389 ** invalid dotted lists no longer raise a read error when
2390 *READ-SUPPRESS* is T
2391 ** signal an error if a symbol that names a declaration is used
2392 as the name of a type, or vice versa
2393 ** allow using the (declare (typespec var*)) abbreviation for
2394 (declare (type typespec var*)) with all type specifiers
2395 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2396 ** always return NIL from PPRINT-POP when OBJECT is NIL
2397 ** don't signal errors when pretty-printing malformed LABELS,
2398 FLET or MACROLET forms
2399 ** declarations in a DOLIST body are also in scope for the
2401 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2403 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2406 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2407 * fixed cross-compiler leakages that prevented building a 32-bit
2408 target with a 64-bit host compiler.
2409 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2410 opened with :IF-EXISTS :OVERWRITE.
2411 * fixed bug 281: error for an invalid qualifier in a short-form method
2412 combination method is not signalled until the faulty method is called.
2413 * bug fix: iteration variable type inferrer failed to deal with open
2414 intervals. (reported by Alan Shields)
2415 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2416 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2417 or more runtime options were provided to the sbcl binary.
2418 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2419 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2420 * optimization: there's now a fast-path for fixnum arguments in the
2421 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2422 * optimization: the code generated on x86-64 is more compact thanks
2423 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2424 * bug fix: floating-point exception handling now partly works on
2425 x86-64. (Thanks to James Knight)
2426 * improvement to the MIPS backend from Thiemo Seufer: C-style
2427 64-bit long long arguments and return values to alien functions
2429 * fixed some bugs revealed by Paul Dietz' test suite:
2430 ** the type-error signalled from WARN has a filled-in DATUM slot.
2431 ** the type-error required when a stream is not associated with
2432 a file has the stream as its datum.
2433 ** type-errors on single-floats on x86-64 no longer have
2434 :INVALID-OBJECT as the datum
2435 ** the type-errors signalled for invalid function names now have
2436 a correct expected type
2437 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2438 for structures defined with a :TYPE. Documentation strings for
2439 typed structures are no longer immediately discarded
2440 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2441 broadcast streams and synonym streams. FILE-LENGTH now also works
2442 on broadcast streams.
2444 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2445 * incompatible change: the --noprogrammer option, deprecated since
2446 version 0.7.5, has been removed. Please use the equivalent
2447 --disable-debugger option instead.
2448 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2450 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2451 inoperational for a while now) has been completely removed.
2452 * null lexical environments are now printed as #<NULL-LEXENV>,
2453 significantly reducing the amount of clutter in typical backtraces.
2454 * documentation on weak pointers, finalization, and after GC hooks
2455 has been added to the manual.
2456 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2457 as other specialized array types, is much faster. SUBSEQ and
2458 COPY-SEQ on such arrays have also been sped up.
2459 * optimization: EQL is now more efficient when at least other argument
2460 is known to be of type (OR FIXNUM (NOT NUMBER)).
2461 * fixed bug: the runtime is now less vulnerable to changes in the
2462 size of the SBCL object on OS X, and virtual memory is reserved for
2463 all spaces that need to be at a fixed address.
2464 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2465 * fixed bug: finalizers and after GC hooks that cause consing are now
2467 * fixed bug: compiler error messages and summaries are now printed to
2468 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2469 * fixed inference of the upper bound of an iteration variable.
2470 (reported by Rajat Datta).
2471 * fixed bug 211e: calling local functions with duplicated constant
2472 keyword argument no longer causes a bogus style warning about an
2474 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2475 ftype declaration to be disregarded. (reported by Dave Roberts)
2476 * fixed bug 373: caused by erronous compilation of references to alien
2477 variables in the runtime on ppc/darwin.
2478 * fixed bug 376: CONJUGATE type deriver.
2479 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2480 (reported by Baughn on #lisp)
2481 * a cross-compiler bug on non-x86 platforms has been identified and
2482 fixed. (thanks to Bruno Haible)
2483 * improvements to the MIPS runtime code for increased stability.
2484 (thanks to Thiemo Seufer)
2485 * increased the maximimum compact environment size to allow
2486 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2487 * partial workaround for bug 135: don't name the function we're
2488 calling for hairy cases of EVAL, so as not to accumulate one environment
2489 entry per call to EVAL. (reported by Kevin Reid)
2490 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2491 * optimization: type testing for non-vector arrays should be faster.
2492 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2494 * bug fix: setting 31st element of a bit vector to zero did not work
2496 * bug fix: redefining a class definition which failed due to a
2497 previous accessor / function clash now works (but see BUGS entry
2498 #380 for more problems in this area). (thanks to Zach Beane)
2499 * the long form of DEFINE-METHOD-COMBINATION disables method group
2500 checking when given a single method group with pattern *. (thanks
2502 * on x86 compiler supports stack allocation of results of simple
2503 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2504 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2505 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2506 * fixed some bugs related to Unicode integration:
2507 ** the restarts for recovering from input and output encoding
2508 errors only appear when there is in fact such an error to
2510 * fixed some bugs revealed by Paul Dietz' test suite:
2511 ** MISC.549 and similar: late transformation of unsafe type
2512 assertions into derived types caused unexpected code
2514 ** SCALE-FLOAT type deriver is less wrong.
2515 ** type derivers for EXP, LOG and similar functions compute result
2516 types for complex arguments better.
2517 ** (MISC.563) CONJUGATE type deriver works for very restricted
2519 ** out-of-line type testers for character strings are available.
2520 ** EQUAL compiler transform understands specialness of objects
2522 ** accessing double-floats stored on the stack now works on x86-64.
2523 ** debugger internals could sometimes create invalid lispobjs,
2524 resulting in GC crashes.
2525 ** MISC.548: type check weakening can convert required type into
2527 ** initialization forms for bindings are not in scope of free special
2530 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2531 * incompatible change: thread support for non-NPTL systems has
2532 been removed - locking is buggy and unreliable. A threaded
2533 SBCL build will now warn at startup and refuse to create
2534 new threads, unless futex support is detected in the kernel
2535 * incompatible change: the top level REPL now has only an ABORT
2536 restart associated with it, not TOPLEVEL and ABORT as it used to.
2537 TOP and TOPLEVEL are now available as debugger commands for
2538 returning to the top level.
2539 * incompatible change: forms evaluated in the REPL now use the
2540 global optimization policy.
2541 * incompatible change: user- and system-initialization files are
2542 no longer processed with LOAD, but by READ and EVAL; hence the
2543 global optimization policy, startup package, readtable, etc,
2545 * The .fasl file format number has been incremented because of
2546 various incompatible changes.
2547 * internal entry point details and argument counts no longer appear
2548 in backtraces unless explicitly requested by setting
2549 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2550 * built-in and standard functions no longer have names like "top
2551 level local call to FOO".
2552 * fixed bug 32: functions defined in non-null lexical environments
2553 now have more legible printed representation
2554 * fixed bug 33: functions defined in non-null lexical environemnts
2555 are now more amenable to inspection by INSPECT.
2556 * workaround for bug 354: XEPs no longer appear in backtraces unless
2557 explicitly requested.
2558 * fixed bug: receiving the signal which results from attempting to
2559 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2560 SIGBUS on other *BSDs) on architectures where the C stack is also
2561 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2562 to debugger confusion or wild instability. (reported by Cheuksan
2564 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2565 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2566 (reported by Lutz Euler)
2567 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2568 compiled code. (reported by Paul Dietz)
2569 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2570 specialized parameter to a method to something that is not TYPEP
2571 the specializer is now possible.
2572 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2573 face of package deletion.
2574 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2575 pathname. (reported by David Tolpin on c.l.l)
2576 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2577 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2578 STRING-STREAM and FILE-STREAM, respectively.
2579 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2580 than previously; in addition, its test suite is now run on build.
2581 (thanks to Luke Gorrie)
2582 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2583 * optimization: added a immediate representation for single-floats
2585 * fixed some bugs revealed by Paul Dietz' test suite:
2586 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2587 ** attempting to create a package with a colliding nickname causes
2588 correctable errors to be signalled.
2589 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2590 ** several x86-64 backend bugs related to sign-extension of immediate
2593 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2594 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2595 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2597 * fixed loading of multiply forward-referenced layouts.
2598 (thanks to Cheuksan Wang)
2599 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2600 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2601 (see COMPILE-FILE documentation for details of :PRINT option)
2602 * fixed bugs 19 and 317: fixed-format floating point printing is
2603 more accurate. This also fixes a bug reported by Adam Warner
2604 related to the ~@F format directive.
2605 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2607 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2608 dispatch table if the from-char is a dispatch macro character.
2609 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2610 by the wordsize no longer ignore the last word. (reported by Lutz
2612 * fixed bug in type checking of dynamic-extent variables. (reported
2614 * optimization: sequence traversal functions use their freedom to
2615 coerce function designators to functions.
2616 * optimization: code with many calls to CLOS methods specialized on
2617 CLOS classes has had redundant type checks removed.
2618 * optimization: added declarations to speed up operations that access
2619 the internal character database (for example STRING-UPCASE)
2620 * optimization: comparison operations between floats and sufficiently small
2621 fixnums no longer create extra rationals
2622 * fixed some bugs related to Unicode integration:
2623 ** portions of multibyte characters at the end of buffers for
2624 character-based file input are correctly transferred to the
2625 start of the buffer at the next read.
2626 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2627 passing it through to OPEN.
2628 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2629 argument given to internal calls to OPEN.
2630 ** the built-in comment readers (introduced by character sequences
2631 ";" and "#|") are more forgiving to encoding errors; they will
2632 STYLE-WARN and then attempt to resync the stream at a character
2633 boundary. (thanks to Teemu Kalvas)
2634 * fixed some bugs in the x86-64 port:
2635 ** Negative short int return values from c-calls are sign-extended
2637 ** The stack is aligned to 16-bytes for c-calls, as required by
2638 the ABI. (thanks to Cheuksan Wang)
2639 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2640 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2641 for enums. (thanks to Vincent Arkesteijn)
2642 ** Multiple small optimizations and bugfixes for floating point
2644 * fixed some bugs revealed by Paul Dietz' test suite:
2645 ** Space, Tab, Linefeed, Return and Page have the invalid
2646 secondary constituent character trait.
2647 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2649 ** WITH-INPUT-FROM-STRING should only update the index place on
2651 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2652 works more reliably.
2653 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2654 with one-dimensional arrays with fill pointers.
2655 ** TYPE-OF failed on a complex with an integer realpart and a
2657 ** compiler failure during type inference for the code of form
2658 (IF (EQL X (THE ...)) ...) (MISC.535).
2660 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2661 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2662 platform. The port supports 61-bit fixnums, large memory spaces
2663 and reloading shared object files.
2664 * enhancement: saving cores with foreign code loaded is now
2665 supported on ppc/Darwin in addition to the previously supported
2667 * enhancement: the statistical profiler now walks deeper into the
2668 call stack for more meaningful call-graphs and accrued time
2669 reports (x86/x86-64 only). It also now reports time spent in
2671 * enhancement: it is now possible to trace most individual methods
2672 of a generic function in addition to tracing the generic function
2674 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2676 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2677 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2678 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2679 produces an error. (thanks to Vincent Arkesteijn)
2680 * bug fix: NAMESTRING on pathnames with :WILD components in their
2681 directories works correctly. (thanks to Artem V. Andreev)
2682 * fixed bug 125: compiler preserves identity of closures. (reported
2684 * bug fixed: functions with &REST arguments sometimes failed with
2685 "Undefined function" when compiled with (DEBUG 3). (reported by
2687 * bug fix: overflow during compiling of setting element of a bit
2688 vector with constant index and value. (reported by Timmy Douglas)
2689 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2690 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2691 * on x86 compiler partially supports stack allocation of dynamic-extent
2693 * GO and RETURN-FROM do not check the extent of their exit points
2694 when compiled with SAFETY 0.
2695 * fixed some bugs related to Unicode integration:
2696 ** encoding and decoding errors are now much more robustly
2697 handled; it should now be possible to recover even from invalid
2698 input or output to the terminal. (thanks to Teemu Kalvas)
2699 ** provided a first cut at implementing STRING-TO-OCTETS and
2700 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2701 ** altered the SB-MD5 contributed module slightly, changing the
2702 interface just enough for it to be supportable for builds where
2703 lisp characters are not eight bits.
2704 * fixed some bugs revealed by Paul Dietz' test suite:
2705 ** the FORMATTER-generated functions for ~V[ conditionals require
2706 the correct number of arguments.
2707 ** READ-FROM-STRING returns the mandated second value when applied
2708 to displaced strings.
2709 ** the #\Rubout and #\Backspace characters are treated as invalid
2710 constituent characters by the tokenizer.
2712 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2713 * new feature: reloading changed shared object files with
2714 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2715 * new feature: references to foreign variables and functions
2716 can now be compiled and loaded before the corresponding shared
2717 object file is loaded, as long as the foreign definitions are
2718 available at runtime.
2719 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2720 supported. (thanks to Dan Debertin)
2721 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2722 just keywords. (thanks to Vincent Arkesteijn)
2723 * fixed bug #331: structure-class instances corresponding to
2724 DEFSTRUCT forms are now created eagerly.
2725 * fixed bug #345: backtraces from calls to undefined functions work
2726 on x86 as well. Related bug #61 is now also partially fixed on x86
2727 (backtraces from throws to unknown catch tags.)
2728 * bug fix: lambda-list parsing is now stricter vrt. order and number
2729 of lambda-list keywords.
2730 * bug fix: as specified by AMOP, an error is signalled if a
2731 class-option appears multiple times in a DEFCLASS form. (reported
2733 * bug fix: RANDOM can be compiled when the compiler derives the type
2734 of its numeric argument as a disjoint set of small integers.
2735 (reported by Paul Dietz)
2736 * bug fix: starting a core saved with shared objects loaded when
2737 those objects are not available no longer causes threaded SBCL to
2738 hang. (reported by Sean Ross)
2739 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2741 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2742 argument, which must always be NIL. (reported by Kalle Niemitalo)
2743 * bug fix: printing 1.0d+23 no longer results in an error.
2744 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2745 * bug fix: structure slot setters preserve evaluation order. (thanks
2747 * fixed some bugs related to Unicode integration:
2748 ** RUN-PROGRAM can allow its child to take input from a Lisp
2749 stream. (reported by Stefan Scholl)
2750 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2751 locales. (reported by Ken Causey)
2752 * fixed some bugs revealed by Paul Dietz' test suite:
2753 ** INCF, DECF and REMF evaluate their place form as specified in
2755 ** FORMATTER expands ~{ ~} iteration directives with V or #
2756 parameters correctly.
2757 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2758 consequent uses no arguments correctly.
2759 ** the system has a partial understanding of the (COMPLEX RATIO)
2761 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2764 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2765 * new feature: a build-time option (controlled by the :SB-UNICODE
2766 keyword feature, enabled by default) for building the system with
2767 support for the entire 21-bit character space defined by the
2769 * new feature: the system now has rudimentary external-format
2770 support; the primary user-visible change at this time is that
2771 characters with the high bit set (such as lower-case-e-acute) will
2772 print correctly to a terminal in a UTF-8 environment.
2773 * minor incompatible change: BASE-CHAR no longer names a class;
2774 however, CHARACTER continues to do so, as required by ANSI.
2775 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2776 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2777 has been moved to the SB-EXT package (temporarily re-exported from
2779 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2780 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2782 * fixed bug #351: better error-handlind and reporting for malformed
2784 * fixed bug #350: bignum-printing is now more memory-efficient,
2785 allowing printing of very large bignums, eg. (expt 2 10000000).
2786 (reported by Bruno Haible)
2787 * fixed bug #302: better primitive-type selection for intersection
2789 * fixed bug #308: non-graphic characters now all have names, as
2790 required. (reported by Bruno Haible)
2791 * bug fix: redefining a class with different superclasses now correctly
2792 removes it from the direct-subclasses of its previous superclasses.
2793 (reported by David Morse)
2794 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2795 new value now works. (reported by Bruno Haible)
2796 * bug fix: correct canonicalization of multiple non-standard slot
2797 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2798 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2799 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2800 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2801 now exists, an signals an error.
2802 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2803 during macroexpansion for non-iteration variables as well. (reported
2804 by Bruno Haible for CMUCL)
2805 * bug fix: Cyclic structures and unprintable objects in compiler
2806 messages no longer cause errors. (reported by Bruno Haible)
2807 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2808 and READ-FROM-STRING all now return a primary value of NIL if
2809 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2810 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2811 (reported by Bruno Haible for CMUCL)
2812 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2813 do not designate a condition. (reported by Bruno Haible for
2815 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2816 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2817 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2818 permitting resolution in favour of any of the conflicting symbols.
2819 (reported by Bruno Haible for CMUCL)
2820 * bug fix: EQUAL compiler optimizations is less aggressive on
2821 strings which can potentially compare true despite having distinct
2822 specialized array element types.
2823 * bug fix: unit enumerations can be defined without dividing by
2824 zero. (thanks to Vincent Arkesteijn)
2825 * FORMAT compile-time argument count checking has been enhanced.
2826 (report from Bruno Haible for CMUCL)
2827 * a partial workaround for the bug 262: the compiler does not try to
2828 inline-expand a local function doing RETURN-FROM from a deleted
2829 BLOCK. (thanks to Peter Denno for the bug report and to David
2830 Wragg for the simple test case)
2831 * fixed some bugs revealed by Paul Dietz' test suite:
2832 ** RENAME-PACKAGE allows all package designators as new package
2834 ** constraint propagation and lambda variable substitution are
2835 more cautious in dealing with partially deleted code.
2836 ** compiler sometimes lost reoptimization passes.
2837 ** CERROR, given a condition as condition designator, passes its
2838 remaining arguments to the continue format control without
2840 ** Case-altering FORMAT directives work correctly on non-ASCII
2842 ** The REAL type specifier handles bounds outside the floating
2843 point ranges without signalling FLOATING-POINT-OVERFLOW.
2844 ** Functions with IR1-transformations can create intercomponent
2845 references to global functions.
2846 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2848 ** FORMAT ~R treats a nil value for its first parameter correctly.
2850 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2851 * enhancement: saving cores with foreign code loaded is now
2852 supported on x86/NetBSD and sparc/Linux in addition to the previously
2853 supported platforms.
2854 * bug fix: on some platforms repeated installations caused multiple
2855 copies of HTML documentation to be installed -- should not happen
2856 any more. (reported by Stefan Scholl)
2857 * bug fix: parsing self-recursive alien record types multiple times
2858 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2859 original patch by Helmut Eller for CMUCL)
2860 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2861 (thanks to Richard Kreuter)
2862 * bug fix: defining classes whose accessors are methods on existing
2863 generic functions in other (locked) packages no longer signals
2864 bogus package lock violations. (reported by François-René Rideau)
2865 * bug fix: special variables as DEFMETHOD parameters no longer have
2866 associated bogus type declarations. (reported by David Wragg and
2868 * bug fix: read-write consistency on streams of element-type
2869 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2870 * bug fix: redefiniton of the only method of a generic function with
2871 no DEFGENERIC no longer emits a full WARNING. In addition,
2872 redefinition of generic functions with no DEFGENERIC to an
2873 incompatible lambda list now signals an error. (thanks to Zach
2875 * bug fix: DEFGENERIC now works even when there's a function of the
2876 same name in an enclosing lexical environment. (thanks to Zach
2878 * fixed compiler failure, caused by instrumenting code during
2879 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2880 * optimization: added loop analysis and improved register allocation
2881 * fixed some bugs revealed by Paul Dietz' test suite:
2882 ** POSITION on displaced vectors with non-zero displacement
2883 returns the right answer.
2884 ** (SIMPLE-STRING) is a valid type specifier for sequence
2886 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2888 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2889 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2891 ** The justification version of the FORMAT ~< directive treats
2892 non-zero minpad parameter correctly.
2894 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2895 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2896 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2897 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2898 the supported interface.
2899 * new feature: Single-stepping of code compiled with DEBUG 2 or
2900 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2901 * new feature: saving cores with foreign code loaded is now
2902 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2903 Timothy Moore's work for CMUCL)
2904 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2905 parameters to * instead of NIL if no initform is supplied.
2906 (reported by Johan Bockgaard)
2907 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2908 correctly when FUNCALL appears as the car of the form. Note:
2909 despite this FUNCALL forms are not currently subject to
2910 compiler-macro expansion. (port of Raymond Toy's fix for the
2911 same from CMUCL, reported by Johan Bockgaard)
2912 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2913 (thanks for Teemu Kalvas)
2914 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2915 case instead of terminating the iteration (thanks for Julian
2916 Squires, Sean Champ and Raymond Toy)
2917 * bug fix: incorrect expansion of defgeneric that caused a style
2918 warning. (thanks for Zach Beane)
2919 * bug fix: slot accessor effective method computation works properly
2920 for classes with multiple non-standard applicable methods on
2921 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2922 * on x86 compiler supports stack allocation of results of LIST and
2923 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2924 CMUCL implementation by Gerd Moellmann)
2925 * fixed some bugs revealed by Paul Dietz' test suite:
2926 ** FORMAT strings with both the ~<~:;~> form of the justification
2927 directive and pretty-printing directives cause an error.
2929 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2930 * incompatible change: the internal functions
2931 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2932 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2933 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2934 instead of the old functions.
2935 * new feature: on platforms where "dladdr" is available foreign
2936 function names now appear in backtraces. (based on Helmut Eller's
2938 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2939 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2941 * documentation: ASDF manual is now distributed with SBCL.
2942 * bug fix: SBCL can now load its contributed modules with REQUIRE
2943 even if the system-provided entries have been removed from
2944 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2946 * bug fix: backtraces involving undefined functions or assembly
2947 routines are more informative. (thanks to Brian Downing)
2948 * bug fix: mutually referent alien structures now work correctly.
2949 (reported by Rick Taube)
2950 * bug fix: structures defined by WITH-ALIEN can be referred to
2951 within other definitions in the same WITH-ALIEN.
2952 * bug fix: division operators (MOD, TRUNCATE and the like) with
2953 constant zero divisors and integer dividends no longer generate
2955 * bug fix: provide default methods for INPUT-STREAM-P and
2956 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2957 * bug fix: improve the detection and resolution of MOP metacycles
2958 (where effective method computation depends on the generic function
2959 having its effective method computed). (reported by Bruno Haible)
2960 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2961 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2962 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2963 * bug fix: pathnames with relative directory components can be
2964 represented relative to default pathnames.
2965 * optimization: in taking the GCD of bignums, reduce the two bignums
2966 to approximately the same size (using Euclid's algorithm) before
2967 applying the more sophisticated binary GCD. (thanks to Juho
2969 * optimization: COUNT on bitvectors now operates word-at-a-time.
2970 * optimization: ASH with a positive, but not necessarily constant,
2971 (leftwards) shift, when in a modular context, is compiled to a
2973 * fixed some bugs revealed by Paul Dietz' test suite:
2974 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2975 if the corresponding argument is NIL.
2976 ** FORMAT directives accepting a minpad parameter treat negative
2978 ** literal commas as character parameters to FORMAT directives are
2980 ** literal spaces directly after ~<Newline> directives within a
2981 format-logical-block (~:< ~@:>) do not induce :FILL-style
2982 conditional newlines.
2983 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2984 as specified: it no longer includes conditional newlines).
2985 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2987 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2988 :PER-LINE-PREFIX argument does not evaluate to a string.
2990 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2991 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2992 the manual for details; for now, package locks can be disabled by
2993 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2994 if no major problems are found then it is likely that they will be
2995 compiled in unconditionally.
2996 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2997 unsupported operators on all platforms. To load a shared library
2998 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2999 object file, link it into a shared library outside of SBCL and
3000 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3002 * bug workaround: ROOM T and the GC were not working together
3003 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3004 reporting facility aren't preserved. That reporting has been
3005 disabled, so now until and unless someone figures out how to make it
3006 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3007 * minor incompatible change: as threatened around sbcl-0.8.0, the
3008 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3009 The symbols are also exported from SB-PCL for backwards
3010 compatibility, but more so than before SB-PCL should be treated as
3011 an implementation-internal package.
3012 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3014 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3015 It is known as of this release not to work on the Alpha, however.
3016 * fixed bug #167: errors signalled due to illegal syntax in method
3017 bodies are now more legible.
3018 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3019 designators and can hence be used with TYPEP.
3020 * fixed bug #333: CHECK-TYPE now ensures that the type error
3021 signalled, if any, has the right object to be accessed by
3022 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3023 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3024 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3026 * fixed bug #334: programmatic addition of slots using specialized
3027 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3028 and :ALLOCATION :CLASS slots.
3029 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3030 float exponents. (rereported by Peter Seibel)
3031 * fixed a bug: #\Space (and other whitespace characters) are no
3032 longer considered to be macro characters in standard syntax by
3033 GET-MACRO-CHARACTER.
3034 * fixed bug: initialization of condition class metaobjects no longer
3035 causes an instance of the condition to be created. (reported by
3037 * fixed bug: it is now possible to have slots such that
3038 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3039 description is neither :INSTANCE nor :CLASS.
3040 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3041 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3042 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3043 non-standard SLOT-DEFINITION-ALLOCATION values.
3044 * fixed bugs: various race conditions handling exiting threads.
3045 CL-PPCRE's thread torture test now passes.
3046 * fixed arguably-a-bug: GC time proportional to number of threads in
3047 system even when most of them are idle
3048 * optimization: improved performance of BIT and SBIT on bit-vectors.
3049 * .fasl file incompatibility: The fasl file version number has
3050 been incremented because of changes associated with package locks.
3052 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3053 * minor incompatible change: the system no longer provides
3054 optimization hints (conditions which are TYPEP
3055 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3056 mode; these hints are still emitted when higher SPEED optimization
3058 * new contrib module: a sampling profiler (profiling by statistical
3059 sampling, rather than by instrumenting functions) is available as
3060 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3061 * the behaviour of the standard function ED is now customizeable by
3062 third parties through a hook variable: see ED's documentation
3063 string for information on the protocol.
3064 * the compiler no longer emits efficiency notes for (FUNCALL X)
3065 when the type of X is uncertain under default optimization
3067 * fixed bug 276: mutating a binding of a specialized parameter to a
3068 method to something that is not TYPEP the specializer is now
3070 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3071 exhibit the required behaviour on the x86 platform. (thanks to
3072 Peter van Eynde, Eric Marsden and Bruno Haible)
3073 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3074 even for difficult arguments. (reported by Peter Graves)
3075 * fixed bug 141a: the backquote printer now descends quoted
3077 * fixed another bug in backquote printing: no more destructive
3078 modification of the form's list structure. (reported by Brian
3080 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3081 move between its address being taken and the call to
3082 interrupt_thread, fixing a crashing race condition.
3083 * the SB-POSIX contrib implementation has been adjusted so that it
3084 no longer exhibits ridiculously poor performance when constructing
3085 instances corresponding to C structs.
3087 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3088 * minor incompatible change: the sb-grovel contrib now treats C
3089 structures as alien (in the sense of SB-ALIEN) objects rather than
3090 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3091 has implications for memory management of client code
3092 (sb-grovel-returned objects must now be manually managed) and for
3093 type safety (alien objects now have full types).
3094 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3095 used to control emission of compiler diagnostics, rather than the
3096 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3097 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3098 quality should be considered deprecated.
3099 * install.sh now installs the user manual as well
3100 * (not quite a new documentable feature, but worth considering in
3101 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3102 beginnings of a semantically meaningful condition hierarchy is
3103 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3105 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3106 designator as the defaults argument.
3107 * fixed bug: Displaced arrays whose displaced-to array has become
3108 too small now cause ARRAY-DIMENSION to signal an error, providing
3109 for safer bounds-checking. (reported by Bruno Haible)
3110 * fixed bug: DEFCLASS slot definitions with identical :READER and
3111 :WRITER names now signal a reasonable error. (reported by Thomas
3113 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3115 * fixed bug: Invalid slot specification errors now print correctly.
3116 (thanks to Zach Beane)
3117 * fixed bug 320: Shared to local slot value transfers in class
3118 redefinitions now happen corrently from superclasses as
3119 well. (reported by Bruno Haible)
3120 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3122 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3123 improper lists correctly. (reported by Bruno Haible)
3124 * fixed bug 313: source-transform for <fun-name> was erroneously
3125 applied to a call of a value of a variable with name <fun-name>.
3126 (reported by Antonio Menezes Leitao)
3127 * fixed bug 307: The obsolete instance protocol ensures that
3128 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3129 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3130 remove dead unknown-values globs from the middle of the stack.
3131 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3132 easier to resume long computations after using *BREAK-ON-SIGNALS*
3133 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3134 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3135 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3136 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3137 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3138 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3140 * fixed a (fairly theoretical) bug in string printing: if
3141 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3142 does not have array-element-type equal to the most general string
3144 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3145 function name. (thanks to Nikodemus Siivola)
3146 * fixed bug: compile-time format string checker failed on
3147 non-closed ~{. (reported by Thomas F Burdick)
3148 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3149 don't warn on legal loop code involving more than one aggregate
3150 boolean. (thanks to Nikodemus Siivola)
3151 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3152 in keyword position to MAKE-PACKAGE was not being reported as
3154 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3155 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3157 * fixed bugs 280 and 312: the checking for multiple definitions in a
3158 file is less likely to become confused by uses of inline
3160 * fixed bug: the #S reader macro performs the keyword coercion
3161 specified for slot names. (reported by Kalle Niemitalo)
3162 * fixed bug: lambda lists may contain symbols whose names start with
3163 & but are not lambda-list-keywords; their occurrence triggers a
3165 * fixed bug 321: define-method-combination argument lambda lists do
3166 not cause invalid code to be generated when &optional or &aux
3167 variables have default values. (reported by Bruno Haible)
3168 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3169 have CLOS classes; this appears also to have fixed reported
3170 instability in stack exhaustion detection.
3171 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3172 MUFFLE-WARNING when no associated restart is present is now
3174 * optimization: rearranged the expansion of various defining macros
3175 so that each expands into only one top-level form in a
3176 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3178 * optimization: used a previously little-used slot in symbols to
3179 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3181 * fixed some bugs revealed by Paul Dietz' test suite:
3182 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3184 ** Fixed an optimization bug related to inheritance of initforms
3185 from local to shared slots.
3186 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3187 ** CAST optimizer forgot to flush argument derived type.
3188 ** print/read consistency on floats is now orders of magnitude
3189 more likely. (thanks also to Bruno Haible for a similar report
3191 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3192 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3193 for objects of type REAL. Make it so.
3194 ** SXHASH is specified (infelicitously) to respect similarity,
3195 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3196 it so. (thanks to Markus Ziegler)
3197 ** on the Alpha, the compiler succeeds in compiling functions
3198 returning a known number of arguments greater than 63.
3199 ** fixed handling of invalid NIL arguments in keyword position
3201 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3203 ** provided a readably-printable representation for RANDOM-STATE
3205 ** ensured that pathnames, where they have a namestring, always
3206 print using #P"..." syntax.
3208 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3209 * Support for the forthcoming 2.0 version of the NetBSD kernel
3210 running on x86 hardware has been added. (thanks to Perry
3211 E. Metzger most immediately, and others for their past work)
3212 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3213 current release version; SBCL's OpenBSD support had been broken
3214 since about the time of OpenBSD's switch to ELF binary format.)
3215 * [placeholder for DX summary]
3216 ** user code with &REST lists declared dynamic-extent, under high
3217 speed or space and low safety and debug optimization policy.
3218 * The manual has been converted to Texinfo format and the debugger
3219 chapter from the cmucl manual has been added.
3220 * A facility has been added to extract documentation strings from
3221 sbcl and store them as Texinfo-formatted snippets for inclusion in
3222 the manual (via Texinfo's @include directive)
3223 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3224 the test case to Dave Roberts)
3225 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3226 pointers. (reported by Sean Ross)
3227 * bug fix: PROFILE output is printed nicely even for large numerical
3228 values. (thanks to Zach Beane)
3229 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3230 greater than 32 handle EOF correctly.
3231 * bug fix: on X86 an immediate argument of the IMUL instruction is
3232 correctly printed in disassembly. (thanks to Lutz Euler)
3233 * bug fix: class slots in redefined classes preserve their old
3234 values. (thanks to Bruno Haible and Nikodemus Siivola)
3235 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3236 succeeds. (reported by Marco Baringer)
3237 * fixed some bugs revealed by Paul Dietz' test suite:
3238 ** READ-SEQUENCE now works on ECHO-STREAMs.
3239 ** RATIONALIZE works more according to its specification. (thanks
3242 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3243 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3244 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3245 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3246 should matter to you only if you rebind the printer control
3247 variables and then find you want different bindings in the
3248 debugger than in the ordinary execution of your program.)
3249 * The runtime build system has been tweaked to support building
3250 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3251 assembler and linker. (thanks to Nikodemus Siivola)
3252 * Unbound, undefined, undeclared variables now trigger full
3253 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3254 more often programmer error than deliberate exploitation of undefined
3256 * optimization: the hash algorithm for strings has changed to one
3257 that is less vulnerable to spurious collisions. (thanks to Juho
3259 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3260 needless bounds checking. (thanks to Juho Snellman)
3261 * optimization: implemented multiplication as a modular
3262 (UNSIGNED-BYTE 32) operation on the PPC backend.
3263 * fixed some bugs revealed by Paul Dietz' test suite:
3264 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3266 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3267 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3268 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3270 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3272 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3274 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3275 their output stream on EOF from read.
3276 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3277 have been read to end-of-file.
3278 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3280 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3281 description of determination of which consecutive characters
3283 ** Printing the "Space" character with escaping on now yields "#\\ ",
3284 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3285 ** Reading floating-point numbers with *READ-BASE* set to a number
3286 less than 10 works correctly.
3287 ** Reading floating-point numbers with *READ-BASE* set to a number
3288 more than 10 works correctly.
3289 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3290 the readtable currently in effect.
3292 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3293 * minor incompatible change: parsing of namestrings on a physical
3294 (Unix) host has changed; numbers after the final #\. in a
3295 namestring are no longer interpreted as a version field. This is
3296 intented to be largely invisible to the user, except that the
3297 meaning of the namestring "*.*.*" has changed: it now refers to a
3298 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3299 should usually be replaced by
3300 (make-pathname :name :wild :type :wild :version :wild)
3301 with the added benefit that this is more likely to be portable.
3302 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3303 option to OPEN now signals an error if the file being opened
3304 exists; this may have an impact on existing code.
3305 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3306 signals received, on the PowerPC platforms (both Linux and
3307 Darwin). (thanks to Pierre Mai for pointing out the location of
3309 * several fixes on OS X: The system now builds and runs cleanly on
3310 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3311 (thanks to Brian Mastenbrook)
3312 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3313 second-resolution: integer multiples of 1/3600 between -24 and 24.
3314 (thanks to Vincent Arkesteijn)
3315 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3316 type when called with 1 argument; PEEK-CHAR checked type of
3317 PEEK-TYPE only after having read first character from a
3318 stream. (reported by Peter Graves)
3319 * bug fix: the garbage collector now has much better locality
3320 behaviour, and in particular no longer treats all memory as being
3321 exhausted when many small objects point to each other in a deeply
3323 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3324 recognized as being TYPEP their class.
3325 * bug fix: the PUSHNEW documentation string has been corrected.
3326 (thanks to Vincent Arkesteijn)
3327 * bug fix: defaulting of the value for the last of an atypically
3328 large number of multiple values being bound was not being
3329 performed correctly on the Alpha or PPC platforms
3330 * optimization: implemented multiplication as a modular
3331 (UNSIGNED-BYTE 32) operation on the x86 backend.
3332 * optimization: SEARCH on simple-base-strings can now be open-coded.
3333 (see also contrib/compiler-extras.lisp for inspiration for
3334 teaching the compiler about the Boyer-Moore algorithm).
3335 * value, returned by MAX (and MIN) called with several EQUALP, but
3336 not EQL, arguments now does not depend on compiler settings.
3337 * fixed some bugs revealed by Paul Dietz' test suite:
3338 ** in stack analysis liveness information is propagated from
3339 non-local entry points.
3340 ** pathwise CAST removing failed when the CAST node did not start
3342 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3343 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3345 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3346 host is already defined.
3347 ** RENAME-FILE works on streams instead of signalling an internal
3349 ** PEEK-CHAR uses the current readtable when determining whether
3350 or not a character is whitespace.
3351 ** MERGE-PATHNAMES handles the case when the pathname does not
3352 specify a name while the default-pathname specifies a version.
3353 ** Pathnames now stand a better chance of respecting print/read
3355 ** Attempting to use standardized file system operators with a
3356 pathname with invalid :DIRECTORY components signals a
3358 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3360 ** DIRECTORY on logical pathnames is more correct.
3361 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3362 signal a TYPE-ERROR if their argument is not a stream.
3363 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3364 designator argument does not designate a stream.
3365 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3366 examining the synonym.
3367 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3369 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3370 element-type larger than ([UN]SIGNED-BYTE 32).
3372 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3373 * When built with the :SB-FUTEX feature, threaded builds now take
3374 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3375 for faster/more reliable mutex and condition variable support.
3376 * Incompatible change (but one you probably shouldn't have been using
3377 anyway): the interface and code for arbitrating between multiple
3378 threads in the same user session has been redesigned.
3379 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3380 error when called without an explicit environment argument.
3381 (thanks to Nikodemus Siivola)
3382 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3383 confused about their position. (thanks to Adam Warner and Gerd
3385 * bug fix: Pretty printing backquoted forms with unquotations in the
3386 argument list position of various code constructs such as LAMBDA
3387 now works correctly. (reported by Paul Dietz)
3388 * bug fix: Pretty printing unquotations no longer loses all
3389 stream position information.
3390 * optimization: performance of string output streams is now less
3391 poor for multiple small sequence writes.
3392 * optimization: performance of CSUBTYPEP in the presence of complex
3393 expressions involving CONS and NOT many times has been improved.
3394 (reported by Paul Dietz)
3395 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3397 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3398 streams for the REPL, for the debugger, and so on. (thanks to
3400 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3401 * fixed some bugs revealed by Paul Dietz' test suite:
3402 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3403 is ignored if it is too small, rather than propagating through
3404 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3405 ** extremely complex negations of CONS types were not being
3406 sufficiently canonicalized, leading to inconsistencies in
3408 ** VALUES tranformer lost derived type.
3410 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3411 * fixed a bootstrapping bug: the build process no longer assumes
3412 that the various BOOLE-related constants have the same value in
3413 host and target lisps. (noted by Paul Dietz' test suite on an
3414 SBCL binary built from CLISP)
3415 * The system can now be dynamically linked on the MIPS platform,
3416 which enables dynamic loading of foreign code from Lisp. (thanks
3417 to Ralf Baechle for discussions on the MIPS ABI)
3418 * The system now records debugging information for its own source
3419 files in a filesystem-position-independent manner, relative to
3420 the "SYS" logical host.
3421 * fixed a compiler bug: MV-LET convertion did not check references
3422 to the "max args" entry point. (reported by Brian Downing)
3423 * tweaked disassembly notes to be less confident about proclaiming
3424 some instruction as an LRA. (thanks to Brian Downing)
3425 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3426 now each have their own history, command character, and other
3427 characteristics. (thanks to David Lichteblau)
3428 * fixed some bugs revealed by Paul Dietz' test suite:
3429 ** compiler failure in compiling LOGAND expressions including a
3431 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3432 shift greater than 32.
3433 ** FLUSH-DEST did not mark blocks for type check regeneration.
3434 ** HANDLER-CASE failed to accept declarations in handler clauses
3435 in some circumstances.
3437 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3438 * New code in contrib/sb-introspect (still probably not entirely
3439 stable yet) provides some support for smart Lisp development
3440 environments like SLIME.
3441 * The conditions signalled for errors occurring when loading .fasl
3442 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3443 in a way which should help ASDF recover gracefully.
3444 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3445 stuff has been cleaned up. If you code contrib/ stuff, this might
3446 affect you, and you can look at contrib/README, contrib/STANDARDS,
3447 and/or the 0.8.4.27 diff to check.
3448 * In full calls the compiler now does not generate checks for declared
3449 argument types for all arguments.
3450 * various threading fixes
3451 ** and some experimental patches which didn't make it into
3452 the main tree for this release, but which are shipped in
3453 contrib/experimental-thread.patch as a possible fix for some
3454 failures (deadlock, spinning...) in GC-intensive multithreaded
3456 * fixed PPC build problem (source code incompatibility of different
3457 library versions): added offsetof() hackery which attempts to divine
3458 where glibc maintainers put uc_mcontext today
3459 * fixed bug 282: compiler does not trust type assertions while passing
3460 arguments to a full call.
3461 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3462 &OPTIONAL VALUES type parameter.
3463 * fix bug 214: algorithm for noting rejected templates is now more
3464 similar to that of template seletion. (also reported by rydis on
3466 * fixed bug 141b: printing backquoted information readably and prettily
3467 inserts a space where necessary.
3468 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3469 (CHARACTER 10) are now reported as errors, rather than propagated
3470 as unknown types. (reported by piso on #lisp)
3471 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3472 with values NIL and :ERROR. (thanks to Milan Zamazal)
3473 * fixed bug 191c: CLOS now does proper keyword argument checking as
3474 described in CLHS 7.6.5 and 7.6.5.1.
3475 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3476 longer raise an error; further, using a list as a for-as-arithmetic
3477 counter now raises a meaningful error.
3478 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3479 now understood by sequence creation functions such as MAKE-SEQUENCE
3481 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3482 a STRING-INPUT-STREAM.
3483 * compiler enhancement: SIGNUM is now better able to derive the type
3485 * type declarations inside WITH-SLOTS are checked. (reported by
3487 * fixed some bugs revealed by Paul Dietz' test suite:
3488 ** incorrect optimization of TRUNCATE for a positive first
3489 argument and negative second.
3490 ** compiler failure in let-convertion during flushing dead code.
3491 ** compiler failure while deriving type of TRUNCATE on an
3492 interval, containing 0.
3493 ** ASH of a negative bignum by a negative bignum count now returns
3495 ** intersection of CONS types now canonicalizes properly, fixing
3496 inconsistencies in SUBTYPEP.
3498 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3499 * incompatible change: The --disable-debugger command line
3500 option now clobbers the debugger at a more fundamental
3501 level, by redefining #'INVOKE-DEBUGGER instead of by
3502 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3503 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3504 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3505 enter the debugger REPL and then suffer recursive errors
3506 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3507 while under the new system, BREAK in --disable-debugger mode
3508 terminates the system just as an unhandled error would.
3509 * fixed compiler performance when processing loops with a step >1;
3510 * bug fix: DOCUMENTATION now retrieves generic function
3511 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3512 support has been systematized, and now supports the methods
3513 specified by ANSI, along with a default method and a method for
3514 slot documentation. (reported by Nathan Froyd)
3515 * bug fix: effective methods associated with a generic function are
3516 no longer cached over a change of that generic function's method
3517 combination. (reported by Andreas Fuchs)
3518 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3519 names a non-existent directory. (thanks to Andreas Fuchs)
3520 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3521 the PPC platform, lead to stack corruption; this has been fixed.
3522 (reported by Rainer Joswig)
3523 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3524 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3525 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3526 arithmetic in general, is now much more reliable on the PPC
3528 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3529 platform now returns the right answer.
3530 * optimization: restored some effective method precomputation in
3531 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3532 precomputation is now tunable.
3533 * optimization: compiler-internal data structure use has been
3534 reviewed, and changes have been made that should improve the
3535 performance of the compiler by about 20%.
3536 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3537 simple-base-strings and simple-bit-vectors is improved.
3538 * optimization: the optimization of 32-bit logical and arithmetic
3539 functions introduced in version 0.8.3 on the x86 has been
3540 implemented on the mips, ppc and sparc platforms; an
3541 implementation of the same facility, but for 64-bit arithmetic,
3542 has been added for the alpha.
3543 * microoptimization: the compiler is better able to make use of the
3544 x86 LEA instruction for multiplication by constants.
3545 * bug fix: in some situations compiler did not report usage of
3546 generic arithmetic in (SPEED 3) policy.
3547 * bug 145b fix: compiler used wrong type specifier while converting
3548 MEMBER-types to numeric.
3549 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3551 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3552 index argument now works properly on the Alpha platform.
3553 * bug fix: floating point exception treatment on the Alpha platform
3555 * bug fix: FILE-POSITION works much better on string input and
3556 output streams. (thanks to Nikodemus Siivola)
3557 * bug fix: many threading/garbage collection symptoms sorted.
3558 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3559 might be pseudo-atomic.
3560 * internal change: Stopping for GC is now done with signals not
3561 ptrace. GC is now done in whichever thread wanted it, instead of
3563 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3565 * bug fix: result form in DO is not contained in the implicit
3567 * incompatible change: ICR structure is changed; the value part of
3568 CONTINUATION is now called LVAR; corresponding functions are
3569 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3570 * added type deriver for ISQRT (thanks to Robert E. Brown).
3571 * bug fix: better support for loading from the command line when an
3572 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3574 * fixed some bugs revealed by Paul Dietz' test suite:
3575 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3576 ** ROUND and FROUND now give the right answer when given very
3577 small float arguments.
3578 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3580 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3581 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3582 ** LCM should return a non-negative integer.
3583 ** PARSE-INTEGER returned the index of a terminator instead of the
3584 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3585 ** PARSE-INTEGER returned an incorrect index being applied to a
3587 ** LCM with two arguments of 0 returns 0 rather than signalling
3589 ** unsigned addition of a 32-bit constant with the high bit set no
3590 longer causes an internal compiler error on the x86.
3591 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3592 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3593 with negative last argument.
3594 ** byte specifiers with zero size and position no longer cause
3595 an error during type derivation.
3596 ** bignum multiplication on the Alpha platform now returns the
3598 * porting: The system now builds on SuSE AMD64, although it still
3599 generates a 32-bit binary.
3600 * .fasl file incompatibility: The fasl file version number has
3601 been incremented (because of the changes to internal compiler
3602 data structures referred to above).
3604 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3605 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3606 more accurately, on the Darwin kernel running on PowerPC hardware.
3607 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3608 * Compiler code deletion notes now signal a condition of type
3609 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3610 an associated MUFFLE-WARNING restart.
3611 * The compiler now performs limited argument count validation of
3612 constant format strings in FORMAT, and where appropriate in ERROR,
3613 CERROR and WARN. (thanks to Gerd Moellmann)
3614 * New ASDF-INSTALL contrib can be used for automatic download and
3615 installation of third-party Lisp code from CCLAN or other sites
3617 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3618 which forces another thread to execute a function supplied by the
3620 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3621 now accept and act upon their :ELEMENT-TYPE keyword argument.
3622 (reported by Martin Atzmueller, Edi Weitz)
3623 * bug fix: FILE-POSITION now accepts position designators up to
3624 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3625 is the greater. (thanks to Patrik Nordebo)
3626 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3627 Kalle Olavi Niemitalo)
3628 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3629 printable. (reported by Eric Marsden)
3630 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3631 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3632 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3633 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3634 (thanks to Stig Sandoe)
3635 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3636 UNREAD-CHAR now correctly includes the unread character in the
3637 target sequence. (thanks to Gerd Moellmann)
3638 * bug fix in threaded builds: the system can now be suspended and
3639 resumed by shell job control with minimal disruption.
3640 * bug fixes in times and timezones >2038AD
3641 * better handling of "where is GNU make?" problem in build scripts
3642 (thanks to Nikodemus Siivola)
3643 * new optimization: inside a named function any reference to a
3644 function with the same name is considered to be a self-reference;
3645 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3646 optimization quality.
3647 * new optimization on x86: logical functions and + now have
3648 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3649 used when the result is truncated to 32 bits.
3650 * VALUES declaration is partially enabled.
3651 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3652 * fixed some bugs revealed by Paul Dietz' test suite:
3653 ** The system now obeys the constraint imposed by
3654 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3655 types form a lattice under type intersection.
3656 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3657 ** ASSOC now ignores NIL elements in an alist.
3658 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3659 and (1+ MOST-POSITIVE-FIXNUM) answers.
3660 ** The addition of a method with invalid qualifiers to a generic
3661 function does not cause an error to be signalled immediately;
3662 a warning is signalled, and the error is generated only on
3663 calling the generic function.
3664 * changed .fasl file version number, in part to add type codes for
3665 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3666 obscure ANSI requirements
3668 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3669 * fixed bug 148: failure to inline-expand a local function left
3670 garbage, confusing the compiler.
3671 * fixed bugs 3cd: structure slot readers perform type check if the
3672 slot can have an invalid value (i.e. it is either not initialized
3673 or can be written with a less specific slot writer).
3674 * bug fix: the compiler now traps array references to elements off
3675 the end of an array; previously, the bounds checking in some
3676 circumstances could go off-by-one.
3677 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3679 * type declarations for array element types now obey the description
3680 on the CLHS page "Declaration TYPE", as per discussions on
3681 sbcl-help around 2003-05-08. This means that a declaration
3682 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3683 declaration, all references to BAR will be asserted or assumed
3684 (with THE, so dependent on compiler policy) to involve objects of
3685 type FOO. Note that no such declaration is implied in
3686 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3687 * declared types of functions from the "Conditions"
3688 chapter. (reported by Paul Dietz)
3689 * bug fix: CERROR accepts a function as its first argument.
3690 * bug fix: NTH an NTHCDR accept a bignum as index
3691 arguments. (reported by Adam Warner)
3692 * optimization: character compare routines now optimize comparing
3693 against a constant character. (reported by Gilbert Baumann)
3694 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3695 argument now works properly on the MIPS platform.
3696 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3697 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3698 declared to have a functional type, does not cause an error
3700 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3701 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3702 * fixed bug: if last continuation of a deleted block has a
3703 destination, this destination should be deleted too. (reported by
3705 * fixed a bug in the bootstrap process: the host compiler's values
3706 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3707 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3708 test case from Patrik Nordebo)
3709 * improved the ability of the disassembler on the PPC platform to
3710 provide helpful disassembly notes.
3711 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3712 the class in more cases than previously.
3713 * bug fix: FILE-POSITION now understands :START and :END for
3714 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3715 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3716 8) data. (thanks to David Lichteblau)
3717 * bug fix: it is possible to add a method to a generic function
3718 without lambda list.
3719 * bug fix: reader failed to signal END-OF-FILE inside an
3720 object representation. (reported by Nikodemus Siivola)
3721 * fixed some bugs revealed by Paul Dietz' test suite:
3722 ** LAST and [N]BUTLAST should accept a bignum.
3723 ** condition slot accessors are methods.
3724 ** (VECTOR NIL) is a subtype of STRING.
3726 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3727 * minor incompatible change: some nonsensical specialized lambda
3728 lists (used in DEFMETHOD) which were previously ignored now signal
3730 * minor incompatible change: the system is now aware of the types of
3731 variables in the COMMON-LISP package, and will signal errors for
3732 most violations of these type constraints (where previously they
3733 were silently accepted).
3734 * minor incompatible change: COMPILE-FILE now uses the freedom
3735 afforded (ANSI 3.2.2.3) to use derived function types for
3736 functions defined in the same file. This also permits the system
3737 to warn on static type mismatches and function
3738 redefinition. (Currently it does not work with high DEBUG level.)
3739 * minor incompatible change: VALUES declaration is disabled.
3740 * When issuing notes, the compiler now signals a condition of type
3741 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3742 restart for use in user handlers. It is expected that the
3743 COMPILER-NOTE condition will eventually become a condition
3744 supertype to a hierarchy of note types, which will then be
3745 handleable in a similar fashion. However, at the moment, no such
3746 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3747 but it's an implementation detail, not a classification for the
3749 * Changes in type checking closed the following bugs:
3750 ** type checking of unused values (192b, 194d, 203);
3751 ** template selection based on unsafe type assertions (192c, 236);
3752 ** type checking in branches (194bc).
3753 * A short form of VALUES type specifier has ANSI meaning (it has
3754 increased the number of situations when SBCL cannot perform type
3756 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3757 keywords or constants is permissible.
3758 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3759 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3760 classes. (thanks to Antonio Martinez)
3761 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3762 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3763 argument to a pretty-print stream. Instead, it leaves any such
3764 operations to DESCRIBE-OBJECT methods.
3765 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3767 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3768 lambda lists. (thanks to David Lichteblau)
3769 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3770 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3771 (thanks to Gerd Moellmann)
3772 * fixed bug 246: increased compilation speed of long
3773 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3775 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3777 * DEFCONSTANT now throws a condition of type
3778 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3779 constant to a non-EQL value; CONTINUE and ABORT restarts
3780 respectively change and preserve the value.
3781 * fixed bug 63: The code walker, part of the implementation of CLOS,
3782 is now better at handling symbol macros.
3783 * bug fix: There is no longer an internal implementation type named
3784 CL:LENGTH. (reported by Raymond Toy)
3785 * bug fix: In macro-like defining macros/special operators the
3786 implicit block does not enclose the lambda list.
3787 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3788 enclosed in parentheses) are not suitable as type specifiers, and
3789 their use properly signals an error now.
3790 * bug fix: An argument count mismatch for a type specifier in code
3791 being compiled no longer causes an unhandled error at compile
3792 time, but signals a compile-time warning.
3793 * fixed simple vector readable printing
3794 * bug fix: DESCRIBE takes more care over whether the class
3795 precedence list slot of a class is bound before accessing it.
3796 (reported by Markus Krummenacker)
3797 * bug fix: FORMATTER can successfully compile pretty-printer format
3798 strings which use variants of the ~* directive inside.
3799 * bug fix: SEARCH now applies its TEST predicate to the elements of
3800 the arguments in the correct order. (thanks to Wolfhard Buss)
3801 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3802 in type inference. (thanks to Robert E. Brown)
3803 * bug fix: Reading in symbols with an explicit package name of ""
3804 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3805 * fixed some bugs revealed by Paul Dietz' test suite:
3806 ** NIL is now allowed as a structure slot name.
3807 ** Arbitrary numbers, not just REALs, are allowed in certain
3808 circumstances in LOOP for-as-arithmetic clauses.
3809 ** Multiple class redefinitions before slot access no longer
3810 causes a type error.
3811 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3812 association between the name and a class.
3813 ** Generic functions with non-standard method-combination and over
3814 five methods all of which return constants no longer return NIL
3815 after the first few invocations. (thanks to Gerd Moellmann)
3816 ** CALL-NEXT-METHOD with no arguments now passes the original
3817 values of the arguments, even in the presence of assignment.
3818 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3820 ** DISASSEMBLE works with closures and funcallable instances.
3821 ** ADD-METHOD now returns the generic function, not the new method.
3822 ** FIND-METHOD signals an error if the lengths of the specializers
3823 is incompatible with the generic function, even if the ERRORP
3825 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3826 which its argument is a member.
3827 ** DEFCLASS only redefines the class named by its class-name
3828 argument if that name is the proper name of the class;
3829 otherwise, it creates a new class.
3830 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3831 of the UNBOUND-SLOT condition to the name of the slot.
3832 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3833 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3834 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3835 SLOT-MAKUNBOUND in the specified fashion.
3837 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3838 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3839 cross-compilation host. As a consequence, we can now bootstrap our
3840 way up to SBCL starting with a bare gcc toolchain and human-readable
3841 source code (first the source to CLISP, then the source to SBCL).
3842 * A contributed module containing a partial implementation of the
3843 simple-streams interface has been included. (thanks to Rudi
3845 * A contributed module implementing the RFC1321 Message Digest
3846 Algorithm, known as MD5, has been included.
3847 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3848 no longer has any effect, as the code controlled by this feature
3849 has been deleted. (As far as we know, no-one has ever built using
3850 this feature, and its semantics were confused in any case).
3851 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3852 work on conditions (as required by the ANSI specification),
3853 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3854 expected behaviour on conditions. Users should note, however,
3855 that such behaviour is not required by the ANSI specification,
3856 and so use of this behaviour may render their code unportable.
3857 * fixed some bugs revealed by Paul Dietz' test suite:
3858 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3860 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3861 ** SXHASH on condition objects no longer returns NIL.
3862 ** :ALLOCATION :CLASS slots are better treated; their values are
3863 updated on class redefinition, and initforms inherited from
3864 superclasses are applied.
3865 ** REMOVE-METHOD returns its generic function argument even when
3866 no method was removed.
3867 ** SHARED-INITIALIZE now initializes the values of the requested
3868 slots, including those with :ALLOCATION :CLASS.
3869 ** ALLOCATE-INSTANCE now works on structure classes defined via
3870 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3872 ** SLOT-EXISTS-P now works on conditions, as well as structures
3874 ** MAKE-LOAD-FORM now has the required methods on
3875 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3876 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3877 keyword, and now implements the SLOT-NAMES argument.
3878 ** methods with &OPTIONAL arguments no longer allow too many
3879 arguments to be passed in the call without error.
3880 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3881 option is consistent with the required arguments of the generic
3882 function lambda list.
3883 * bug fix: REQUIRE accepts a string designator. (Thanks to
3885 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3886 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3887 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3888 * bug fix: The compiler now checks for duplicated variables in macro
3890 * bug fix: SETQ on globals returns the correct value.
3891 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3892 not a COMPILER-ERROR (followed by some other strange error on
3893 choosing the CONTINUE restart).
3894 * bug fix: make.sh and friends are now more consistent in the way that
3895 they look for GNU "make".
3897 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3898 * experimental native threads support (on x86 Linux >=2.4 only).
3899 This is not compiled in by default: you need to add :SB-THREAD to
3900 the target features. See the "Beyond ANSI" chapter of the manual
3902 * fix for longstanding nonANSIism: The old distinction between
3903 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3904 The return value from CL:FIND-CLASS is now a CLOS class, and
3905 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3906 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3907 * An interface to the MetaObject Protocol, as described in Kiczales,
3908 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3909 MIT Press, 1991, is available from the SB-MOP package.
3910 * incompatible change: the SB-PCL package should now be considered
3911 a private implementation detail, and no longer a semi-private MOP
3913 * minor incompatible change: due to rearrangement for threads, the
3914 control stack and binding stack are now allocated at arbitrary
3915 addresses instead of being hardcoded per-port. Users affected by
3916 this probably have to be doing advanced things with shared
3917 libraries, and will know who they are.
3918 * minor incompatible change: Previously, all --eval forms used were
3919 processed with READ before any of them were processed with EVAL.
3920 Now each --eval form is processed with both READ and EVAL before
3921 the next --eval form is processed. (Thus package operations like
3922 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3923 work as the user might reasonably expect.)
3924 * minor incompatible change: *STANDARD-INPUT* is now only an
3925 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3927 * minor incompatible change: Y-OR-N-P is now character-oriented,
3928 not line oriented. Also, YES-OR-NO-P now works without errors.
3929 (thanks to Antonio Martinez)
3930 * sb-aclrepl module improvements: an integrated inspector, added
3931 repl features, and a bug fix to :trace command.
3932 * Known functions, which cannot be open coded by the backend, are
3933 considered to be able to check types of their arguments. (fixing
3934 a bug report by Nathan J. Froyd)
3935 * fixed a bug in computing method discriminating functions: It is
3936 now possible to define methods specialized on classes which have
3937 forward-referenced superclasses. (thanks to Gerd Moellmann)
3938 * fixed evaluation order in optional entries (reported by Gilbert
3940 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3941 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3942 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3943 required-by-AMOP NAME argument, as well as CLASS and
3944 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3945 * fixed bug 20: DEFMETHOD can define methods using names that are
3946 not the proper names of classes to designate class specializers.
3947 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3948 Unix file descriptors, instead of blowing up. (thanks to Antonio
3950 * Garbage collection refactoring: user-visible change is that a
3951 call to the GC function during WITHOUT-GCING will not do garbage
3952 collection until the end of the WITHOUT-GCING. If you were doing
3953 this you were probably losing anyway.
3954 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3955 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3956 TYPEP the latter but not the former.
3957 * The compiler issues a full WARNING for calls to undefined functions
3958 with names from the CL package.
3959 * MAP-INTO for a vector destination is open coded. (reported by
3960 Brian Downing on c.l.l)
3961 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3962 documentation string.
3963 * fixed some bugs revealed by Paul Dietz' test suite:
3964 ** COPY-ALIST now signals an error if its argument is a dotted
3966 ** Condition slots are now accessed more correctly in the presence
3967 of multiple initargs for a given slot.
3968 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3969 exclude restarts of the same name associated with a different
3971 ** DEFCLASS of forward-referenced classes with another
3972 forward-referenced class in the superclasses list no longer
3974 ** Condition slots are now initialized once each, not multiple
3975 times. (thanks to Gerd Moellmann)
3976 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3978 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3979 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3980 arguments contain duplicated elements.
3981 ** RESTART-CASE understands local macros.
3982 ** RESTART-CASE associates exactly its own restarts with a condition.
3983 ** ENDP in safe mode checks its argument to be of type LIST.
3984 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3985 in question is unbound.
3986 ** Optimized MAKE-INSTANCE functions no longer cause internal
3987 assertion failures in the presence of duplicate initargs.
3988 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3989 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3990 propagated even in the ctor optimized implementation of
3992 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3994 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3995 * a better implementation of SXHASH on (simple) bit vectors,
3996 measured both in execution speed and in distribution of results
3997 over the positive fixnums, has been installed. Likewise, a better
3998 implementation of EQUAL for simple bit vectors is now available.
3999 * fixed CEILING optimization for a divisor of form 2^k.
4000 * fixed bug 240 (emitting extra style warnings "using the lexical
4001 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4002 by Antonio Martinez)
4003 * fixed SXHASH, giving different results for NIL depending on type
4004 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4005 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4006 variable. (found by Rolf Wester)
4007 * SBCL does not ignore type declarations for special
4008 variables. (reported by rif on c.l.l 2003-03-05)
4009 * some bug fixes in contrib/sb-aclrepl/
4010 * fixed some bugs revealed by Paul Dietz' test suite:
4011 ** a bug in the CONS type specifier, whereby the CAR and CDR
4012 types got intertwined, has been fixed;
4013 ** the type system is now able to reason about the interaction
4014 between INTEGER and RATIO types more completely;
4015 ** APPEND, [N]REVERSE and NRECONC check that those their
4016 arguments, which must be proper lists, are really so;
4017 ** An array specialized to be unable to hold elements has been
4018 implemented, as required -- yes, really -- by ANSI;
4019 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4020 on malformed property lists;
4022 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4023 * incompatible packaging change: in line with Unix convention,
4024 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4025 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4026 * REQUIRE and PROVIDE are now optionally capable of doing something
4027 useful. See the documentation string for REQUIRE.
4028 * infrastructure for a managed SBCL contrib system: contributed
4029 modules in this release include:
4030 ** the ASDF system definition facility;
4031 ** an interface to the BSD Sockets API;
4032 ** an ACL-like convenience interface to the repl;
4033 (thanks to Kevin Rosenberg)
4034 ** an implementation of ROTATE-BYTE, with efficient implementation
4036 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4037 gives a closer approximation to the right answer than previously.
4038 (thanks to Raymond Toy)
4039 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4040 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4041 optional environment arguments, as required by ANSI.
4042 * fixed bugs in other functions taking environment objects, allowing
4043 calls with an explicit NIL environment argument to be compiled
4045 * fixed bug 228: primary return values from
4046 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4047 COMPILE or FUNCTION.
4048 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4049 :TYPE will no longer signal errors on innocuous objects.
4050 * fixed bug 231b: SETQ is better at respecting type declarations in
4051 the lexical environment.
4052 * fixed a bug in DEFCLASS: classes named by symbols with no or
4053 unprintable packages can now be defined.
4054 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4055 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4056 * fixed compiler failure related to checking types of functions.
4057 (reported by Robert E. Brown)
4058 * the compiler is now much more consistent in its error-checking
4059 treatment of bounding index arguments to sequence functions: in
4060 (SAFETY 3) code, errors will be signalled in almost all cases if
4061 invalid sequence bounding indices are passed to functions defined
4062 by ANSI to operate on sequences.
4063 * fixed a bug in the build procedure: documentation of SBCL-specific
4064 packages is now preserved and available in the final Lisp image.
4065 * lifted FDEFINITION lookup out of loops in the implementation of
4066 many list operations. (thanks to Robert E. Brown)
4067 * fixed a bug in the reader: the #n# reader macro now works for
4068 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4069 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4070 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4071 E. Brown and Tony Martinez respectively)
4072 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4073 SLOT-BOUNDP: in particular, it is now able to optimize them much
4074 better, and is now not vulnerable to having packages renamed.
4075 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4076 always called when a slot is not present in an instance. (thanks
4078 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4079 longer signal an error on unreading a character following EOF on
4080 the previous constituent stream. (thanks to Tony Martinez)
4081 * fixed some bugs revealed by Paul Dietz' test suite:
4082 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4083 not just nonnegative fixnums;
4084 ** the logical bit-array operators such as BIT-AND now accept an
4085 explicit NIL for their "opt-arg" argument (to indicate a
4086 freshly-consed result bit-array);
4087 ** ELT now signals an error on an invalid sequence index in safe
4089 ** the type system is now cleverer about negations of numeric
4090 types, and consequently understands the BIGNUM and RATIO types
4092 ** the type system is now cleverer about the interaction between
4093 INTEGER and RATIO types: while bugs still remain, many more
4094 cases are accurately computed;
4095 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4096 if it is in the last clause;
4097 ** CONSTANTLY now correctly returns a side-effect-free function in
4099 ** DECLARE is no longer treated as a special-operator; in
4100 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4101 * incremented fasl file version number due to the change in the
4102 DEFSTRUCT-SLOT-DESCRIPTION structure.
4104 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4105 * minor incompatible change: code processed by the "interpreter" or
4106 EVAL now has a compilation optimization policy of (DEBUG 2)
4107 (changed from (DEBUG 1)) to improve debuggability of interactive
4108 development, and to allow the use of the debug RETURN command in
4110 * an experimental implementation of the RETURN command for the
4111 debugger has been included. (thanks to Frederik Kuivinen)
4112 * fixed bug 62: constraints were not propagated into a loop.
4113 * fixed bug in embedded calls of SORT (reported and investigated by
4115 * fixed some bugs revealed by Paul Dietz' test suite:
4116 ** printing and reading of arrays with some dimensions having
4117 length 0 (thanks to Gerd Moellmann);
4118 ** BOA constructor with &AUX argument without a default value does
4119 not cause a type error;
4120 ** CONSTANTP now returns true for all self-evaluating objects.
4122 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4123 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4124 accessors that are related by inheritance, as specified in the
4125 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4126 Valtteri Vuorikoski)
4127 * The compiler is now able to inline functions that were defined in
4128 a complex lexical environment (e.g. inside a MACROLET).
4129 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4131 * Support for the upcoming FreeBSD-5.0 release has been included.
4132 (thanks to Dag-Erling Smorgrav)
4133 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4134 effect when it is not in a toplevel context.
4135 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4136 stand a better chance of being correct. (thanks to Gerd
4138 * fixed bug in COERCE, which now signals an error on coercing a
4139 rational to a bounded real type which excludes the expected
4141 * The compiler is now able to derive types more accurately from the
4142 COERCE and COMPILE functions.
4143 * fixed bug 223: functional binding is considered to be constant
4144 only for symbols in the CL package.
4145 * fixed bug 231: SETQ did not check the type of a variable being set
4146 (reported by Robert E. Brown)
4147 * A new optimization for MAKE-INSTANCE has been included, fixing
4148 various bugs (including relating to :ALLOCATION :CLASS slots and
4149 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4151 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4152 ** As required by ANSI, LOOP now disallows anonymous collection
4153 clauses such as COLLECT I in conjunction with aggregate boolean
4154 clauses such as THEREIS (= I 1);
4155 ** LOOP now signals an error when any variable is reused in the
4156 same loop (including the potentially useful construct analogous
4157 to WITH A = 1 WITH A = (1+ A);
4158 ** IT is only a special loop symbol within the first clause of a
4159 conditional loop clause;
4160 ** LOOP with a typed iteration variable over a hashtable now
4161 signals a type error iff it should.
4162 * fixed some other bugs revealed by Paul Dietz' test suite:
4163 ** FILE-STREAM now names the class previously known as FD-STREAM;
4164 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4165 argument) no longer signals an error;
4166 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4167 of the slot symbol, rather than using the current package
4168 ((:CONC-NAME "") continues to intern the slot's name in the
4170 * incremented fasl file version number, because of the incompatible
4171 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4172 of the new implementation of DEFINE-COMPILER-MACRO.
4174 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4175 * Support for building SBCL for MIPS platforms running in
4176 little-endian mode has now been checked in, and basic
4177 functionality on said platforms verified.
4178 * minor incompatible change: PCL now records the pathname of a file
4179 in which methods and the like are defined, rather than its
4181 * minor incompatible change: TRUENAME now considers the truename of
4182 a file naming a directory to be the pathname with :DIRECTORY
4183 component indicating that directory.
4184 * minor incompatible change: a NAMED clause in the extended form of
4185 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4186 reason for the previous behaviour is unclear.
4187 * more systematization and improvement of CLOS and MOP conformance
4188 in PCL (thanks to Gerd Moellman and Pierre Mai):
4189 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4191 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4192 primary methods with no specializers;
4193 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4195 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4196 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4197 FORWARD-REFERENCED-CLASSes; error reporting on
4198 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4200 ** SXHASH on CLOS instances now uses a slot internal to the
4201 instance to return different numbers on distinct instances,
4202 while preserving the same return value through invocations of
4204 ** DEFMETHOD signals errors when methods with longer incongruent
4205 lambda lists are added to generic functions;
4206 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4207 CLASS, as specified in AMOP;
4208 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4209 on the order returned by the primary method for classes of
4210 class STANDARD-CLASS;
4211 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4212 * fixed some bugs shown by Paul Dietz' test suite:
4213 ** DOLIST puts its body in TAGBODY;
4214 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4216 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4217 value producing form;
4218 ** if more variables are given to PROGV than values, extra
4219 variables are bound and made to have no value;
4220 ** NSUBSTITUTE on list arguments gets the right answer with
4222 ** ELT signals an error of type TYPE-ERROR when the index argument
4223 is not a valid sequence index;
4224 ** LOOP signals (at macroexpansion time) an error of type
4225 PROGRAM-ERROR when duplicate variable names are found;
4226 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4227 ** FUNCALL of special-operators now cause an error of type
4229 ** PSETQ now works as required in the presence of side-effecting
4230 symbol-macro places;
4231 ** NCONC accepts any object as its last argument;
4232 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4234 ** loop-for-as-package does not require a package to be explicitely
4236 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4238 * fixed bug 166: compiler preserves "there is a way to go"
4239 invariant when deleting code.
4240 * fixed bug 172: macro lambda lists with required arguments after
4241 &REST arguments now cause an error to be signalled. (thanks to
4243 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4244 bug. (thanks to Matthew Danish)
4245 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4247 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4248 arguments are lexically rebound. (thanks to Gerd Moellmann and
4250 * fixed bug 194: error messages are now more informative when there
4251 is no primary method applicable in a call to a generic
4252 function. (thanks to Gerd Moellmann)
4253 * fixed bug in command line argument checking (thanks to Julian
4255 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4256 (thanks to Matthew Danish)
4257 * incremented fasl file version number, because of the
4258 SXHASH-related changes in the layout of CLOS data structures
4260 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4261 * minor incompatible change: The runtime (the Unix executable named
4262 "sbcl") is now much pickier about the .core files it will load.
4263 Essentially it now requires .core files to descend from the same
4264 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4265 as the runtime does. (The intent is to prevent the crashes which
4266 can occur, and which can even be reported as mysterious failures,
4267 when people patch the sources or change the build parameters
4268 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4269 sbcl and .core files.)
4270 * fixed bug: VALUES-LIST is no longer optimized away.
4271 * fixed bug 142: The FFI conversion of C string values to Lisp
4272 string values no longer conses excessively. (thanks to Nathan
4273 Froyd porting Raymond Toy's fix to CMU CL)
4274 * began to systematize and improve MOP conformance in PCL (thanks to
4275 Nathan Froyd, Gerd Moellman and Pierre Mai):
4276 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4278 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4279 ** FINALIZE-INHERITANCE is now called on class finalization;
4280 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4281 argument precedence order.
4282 * fixed bug 202: The compiler no longer fails on functions whose
4283 derived types contradict their declared type.
4284 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4285 so it can be non-toplevel.
4286 * The fasl file version number has changed (because of the new
4287 implementation of DEFMACRO).
4288 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4289 safe code, that any length requirement by their type-specifier
4290 argument is valid. The exceptions to this are described in bug
4292 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4293 functions now check the types of their inputs as required by ANSI.
4294 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4295 introduced symbol is DECLAREd to be SPECIAL.
4296 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4297 * fixed bug: :COUNT argument to sequence functions may be negative
4298 * fixed bug: body of DO-SYMBOLS may contain declarations
4299 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4300 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4301 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4302 symbol macro only once
4303 * fixed printing of call frame when argument list is unavailable
4304 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4305 * compiler no longer signals WARNING on unknown keyword
4308 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4309 * A beta-quality port to the mips architecture running Linux,
4310 based on the old CMUCL backend, has been made. It has been tested
4311 on a big-endian kernel, and works sufficiently well to be able to
4312 rebuild itself; it has not been tested in little-endian mode.
4313 * fixed an inconsistency between gencgc.c and purify.c which made
4314 dumping/loading .core files unreliable
4315 * fixed bug 120a: The compiler now deals correctly with IFs where
4316 the consequent is the same as the alternative, instead of
4317 misderiving the return type. (thanks to Alexey Dejneka)
4318 * fixed bug 113: Logical pathnames are now dumpable (the logical
4319 host is resolved at load-time, throwing an error if it is not
4321 * fixed bug 174: FORMAT's error message is slightly clearer when a
4322 non-printing character is used in a format directive.
4323 * fixed several bugs in compiler checking of type declarations, i.e.
4324 violations of the Python "declarations are assertions" principle
4325 (thanks to Alexey Dejneka)
4326 * fixed several bugs in PCL's error checking (thanks to Gerd
4328 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4330 * fixed bug in compilation of functions as first class values
4331 (thanks to Antonio Martinez-Shotton)
4332 * The compiler's handling TYPE-ERRORs which it can prove will
4333 inevitably happen at runtime has been cleaned up and corrected
4334 in several ways. (thanks to Alexey Dejneka)
4335 * improved argument type checking for various basic arithmetic
4336 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4337 lavished on them in the past that they can be compiled in many
4338 ways in different special cases
4339 * fixed bug 181: compiler checks validity of user supplied type
4341 * cleaned up code flushing in optimization: Function calls which
4342 should signal errors for safety purposes (e.g. which ANSI says
4343 should signal errors when their arguments are of incorrect type)
4344 are no longer optimized away.
4345 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4346 * incremented fasl file version number, because changes in the
4347 implementation of sequence functions like COERCE caused
4348 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4349 in old inline expansions) to become undefined. (Actually these
4350 changes were later undone, so we might very well be binary
4351 compatible with 0.7.7 after all, but leaving the version number
4352 incremented seemed like the simplest and most conservative
4355 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4356 * An alpha-quality port to the parisc architecture running Linux,
4357 based on the old CMUCL backend, has been made. This, even more so
4358 than the other backends, should be considered still a work in
4359 progress; known problems include that the Linux kernel in 64-bit
4360 mode does not propagate the correct sigcontext structure to
4361 userspace, and consequently SBCL on a parisc64 kernel will not
4363 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4364 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4365 suppressed.) Also now that the compiler is looking at declarations
4366 in the environment, it checks optimization declarations as well,
4367 and suppresses inlining when (> DEBUG SPEED).
4368 * More fixes have been made to treatment of floating point exception
4369 treatment and other Unix signals. In particular, floating point
4370 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4371 * The detection and handling of control stack exhaustion (infinite
4372 or very deeply nested recursion) has changed. Stack exhaustion
4373 detection is now done by write-protecting pages at the OS level
4374 and applies at all optimization settings; when found, a
4375 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4376 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4377 be caught using IGNORE-ERRORS.
4378 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4379 correctly when transforming recursive LABELS functions to LETs.
4380 (thanks to Alexey Dejneka)
4381 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4382 that are names of constants or global variables.
4383 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4384 alien routines with docstrings.
4385 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4386 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4388 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4389 (thanks to Eric Marsden)
4390 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4391 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4392 * Bug fix: The SPARC backend can now compile functions involving
4393 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4394 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4395 to a functions expecting a PATHNAME-DESIGNATOR.
4396 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4397 lambda lists. (thanks to Alexey Dejneka)
4398 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4399 functions so that EXPORTing the name of the class doesn't cause
4400 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4401 to Antonio Martinez for reporting this)
4402 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4403 constant-folded without failing an assertion. (thanks to Einar
4404 Floystad Dorum for reporting this)
4405 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4406 types are now dealt with more correctly by the compiler.
4407 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4408 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4409 behaviour analogous to RENAME-FILE. This puts its behaviour more
4410 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4412 * The fasl file version number has changed again. (because of the
4413 bug fix involving the names of PCL MAKE-INSTANCE functions)
4415 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4416 * bug fix: Floating point exceptions are treated much more
4417 consistently on the x86/Linux and PPC/Linux platforms.
4418 * Array initialization with :INITIAL-ELEMENT is now much faster for
4419 cases when the compiler cannot open code the array creation, but
4420 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4421 array accesses have also seen a speed increase.
4422 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4423 specified. (This was at the root of some bad interactions between
4424 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4426 * bug fix: Internal error arguments for undefined functions are now
4427 computed correctly on the PPC/Linux platform.
4428 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4429 Raymond Toy's patch for CMU CL)
4430 * Support for the Solaris 9 operating environment has been included
4431 (thanks to Daniel Merritt)
4432 * A very ugly but hopefully complete draft of the missing FFI chapter
4433 of the manual has been created by reformatting the corresponding
4434 CMU CL manual chapter into (currently very ugly and incoherent)
4435 DocBook and bringing it up to date for SBCL behavior. Thus, the
4436 manual is now essentially complete, at least by my extreme
4437 once-and-only-once standards, whereby it's acceptable to refer to
4438 the doc strings of SB-EXT functions as the primary documentation.
4439 * The fasl file version number has changed again, due to cleanup of
4440 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4441 is no longer a static symbol.)
4443 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4444 * SBCL now builds with OpenMCL (version 0.12) as the
4445 cross-compilation host; also, more progress has been made toward
4446 bootstrapping under CLISP.
4447 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4449 * bug 158 fixed: The compiler can now deal with integer loop
4450 increments different from 1; fixing this turned out also to fix
4452 * bug 169 fixed: no more bogus warnings about using lexical bindings
4453 despite the presence of perfectly good SPECIAL declarations (thanks
4454 to David Lichteblau)
4455 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4456 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4457 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4459 * bug 180 fixed: Method combination specifications no longer ignore
4460 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4461 * bug fix: Structure type predicate functions now check their argument
4462 count as they should.
4463 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4464 correctly. (thanks to Pierre Mai)
4465 * minor incompatible change: The --noprogrammer option is deprecated
4466 in favor of the new --disable-debugger option, which is very similar.
4467 (The major difference is that it takes effect at a slightly different
4468 time at startup, causing handling of errors in --sysinit and
4469 --userinit files will be affected differently.) The
4470 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4471 been added to allow this functionality to be controlled from ordinary
4472 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4473 maintainers, who might want to run non-interactive scripts to
4474 build SBCL cores which will later be used interactively.)
4475 * minor incompatible change: The LOAD function no longer, when given
4476 a wild pathname to load, loads all files matching that pathname.
4477 Instead, an error of type FILE-ERROR is signalled.
4479 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4480 * bug 147 fixed: The compiler preserves its block link/count
4481 invariants more correctly now so that it doesn't crash. (thanks
4483 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4485 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4486 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4487 no-value-for-this-character as NIL (as specified by ANSI).
4488 * HOST-NAMESTRING on physical pathnames now returns a string that is
4489 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4490 (thanks to Christophe Rhodes)
4491 * The Alpha port handles icache flushing more correctly. (thanks to
4493 * More progress has been made toward bootstrapping under CLISP. (thanks
4494 to Christophe Rhodes)
4495 * The fasl file format has changed again, because dynamic loading
4496 on OpenBSD (which has non-ELF object files) motivated some cleanups
4497 in the way that foreign symbols are transformed and passed around.
4498 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4499 is no longer treated as whitespace by the reader, but instead as
4500 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4501 |A
\7fB|, instead of A as it used to.
4503 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4504 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4505 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4506 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4507 this as of 0.7.1.45, but was left out of the previous news section
4508 (thanks to Dan Barlow)
4509 * SBCL now runs on the Solaris operating system on SPARC architectures
4510 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4511 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4512 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4513 * SPARC backend cleanups, allowing builds of cores optimized for V8
4514 and V9 SPARCS, and also emission of code targeted to a particular
4515 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4517 * SBCL is closer to bootstrapping under CLISP, thanks to various
4518 fixes by Christophe Rhodes.
4519 * The fasl file format has changed again, to allow the compiler's
4520 INFO database to support symbol macros.
4521 * The user manual (in doc/) is formatted into HTML more nicely.
4522 (thanks to coreythomas)
4523 * The system is smarter about SUBTYPEP relationships, especially
4524 those involving NOT types (including types such as ATOM which are
4525 represented internally using NOT types). Thus SUBTYPEP is less
4526 likely to return (VALUES NIL NIL) in general, and in particular
4527 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4529 * The fasl file format has changed again, because the internal
4530 representation of types now includes a new slot to support the new
4531 SUBTYPEP-of-NOT-types logic.
4532 * (not a change in the main branch of SBCL, but a related prototype
4533 which can hopefully be merged into the main branch of SBCL in the
4534 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4535 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4536 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4537 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4538 dispatch macro character combinations. (thanks to Alexey Dejneka)
4539 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4540 that superficially look like logical namestrings correctly.
4541 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4543 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4544 default supplied-p) for &optional and &key arguments. (thanks to
4547 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4548 * incompatible change: The compiler is now less aggressive about
4549 tail call optimization, doing it only when (> SPACE DEBUG) or
4550 (> SPEED DEBUG). (This is an incompatible change because there are
4551 programs which relied on the old CMU-CL-style behavior to optimize
4552 away their unbounded recursion which will now die of stack overflow.)
4553 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4554 for non-GENCGC systems has been increased to 20M (since that
4555 seems much closer to the likely performance optimum for modern
4556 systems than the old 4M value was)
4557 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4558 and *DEBUG-PRINT-LEVEL*
4559 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4560 of CMU CL's support for SPARC, and various endianness and other
4561 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4562 * new syntactic sugar for the Unix command line: --load foo.bar is now
4563 an alternate notation for --eval '(load "foo.bar")'.
4565 ** The system now detects stack overflow and handles it gracefully,
4566 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4567 optimization settings. (This is a good thing in general, and
4568 its introduction in this version should be particularly timely
4569 for anyone whose code fails because of suppression of tail
4571 ** The system now hunts for the C variable "environ" in a more
4572 devious way, to avoid segfaults when the C library version differs
4573 between compile time and run time. (thanks to Christophe Rhodes)
4574 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4575 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4576 ** The compiler no longer issues bogus style warnings for undefined
4577 classes in the same source file as the DEFCLASSes which defined
4578 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4580 ** fixes in CONDITION class precedence list for undefined function
4581 errors (thanks to Alexei Dejneka)
4582 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4583 correctly. (thanks to Dan Barlow)
4584 ** portability fixes aiming at bootstrapping under CLISP (thanks
4585 to Dave McDonald and Christophe Rhodes)
4586 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4587 ** fixes in type translation and and type inference (thanks to
4589 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4590 ** various fixes in the new ports (thanks to Dan Barlow)
4591 * several changes related to debugging:
4592 ** suppression of tail recursion, as noted above
4593 ** stack overflow detection, as noted above
4594 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4595 is now the default. (For some time encapsulation has been more
4596 reliable than the breakpoint-based :ENCAPSULATE NIL
4597 implementation, at least on X86 systems; and I just noticed that
4598 encapsulation also seems closer to the spirit of the ANSI
4601 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4603 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4604 up properly again. (There was a packaging bug in 0.7.0 which
4605 left their definitions in SB-SYS::LOAD-FOREIGN and
4606 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4607 vital for most things which interface to C-level interfaces,
4608 like extensions working with sockets or databases or
4609 Perl-compatible regexes or whatever, and the need to fix
4610 this bug is the main reason that 0.7.1 was released so
4612 ** DEFGENERIC is now choosier about the methods it redefines, so that
4613 reLOADing a previously-LOADed file containing DEFGENERICs does
4614 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4615 cycle now works as it should. (thanks to Alexey Dejneka)
4616 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4617 fixed by Christophe Rhodes. (He actually submitted this patch
4618 months ago, and I delayed until after 0.7.0.)
4619 ** Bug 111 (internal compiler confusion about runtime checks on
4620 FUNCTION types) was fixed by Alexey Dejneka.
4621 * Some internal cleanups (getting rid of variables which aren't
4622 needed now that the byte interpreter is gone) caused the fasl
4623 file format number to change again.
4625 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4626 * major incompatible change: The default fasl file extension, i.e. the
4627 default extension for files produced by COMPILE-FILE, has changed
4628 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4630 ** There are many changes in the implementation of the compiler.
4631 SBCL is now essentially a compiler-only implementation of ANSI
4632 Common Lisp. EVAL still "interprets" a few special cases, but
4633 almost all the interesting cases are handled by creating
4634 a LAMBDA expression, calling COMPILE on it, then calling
4635 FUNCALL on the result.
4636 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4637 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4638 Since the code is newer, there might still be some new bugs
4639 (though not as many as before Martin Atzmueller's fixes:-). But
4640 the new code is substantially simpler and clearer, and hopefully
4641 any remaining bugs will be simpler, less fundamental, and more
4642 fixable then the bugs in the old code.
4643 ** The revised compiler is still a little unsteady on its feet.
4645 *** The debugging information it produces (particularly the names
4646 of FUNCTION objects) is sometimes much less useful than what
4647 the old compiler produced.
4648 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4649 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4650 within a MACROLET) has been temporarily weakened.
4651 ** There are new compiler optimizations for various functions:
4652 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4653 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4654 *** the math functions TRUNCATE, FLOOR, and CEILING
4655 *** the function-of-all-trades COERCE
4656 Mostly these should be transparent, but there's one
4657 potentially-annoying problem (bug 117): when the compiler
4658 inline-expands a function and does type analysis on the result,
4659 it can create control paths which have type mismatches, and
4660 when it can't prove that those control paths aren't taken,
4661 it will issue WARNINGs about the type mismatches. This is
4662 a particular problem in practice for the new sequence functions.
4663 It's not clear how this should be fixed, and for now, a
4664 workaround is given in the entry for 117 in the BUGS file.
4665 ** (Because of the interaction between the two previous items --
4666 occasional inlining problems and new inline expansions -- some
4667 of the new sequence function optimizations won't really kick in
4668 completely until debugging information, and then inlining, are
4669 straightened out in some future version.)
4670 * minor incompatible changes:
4671 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4672 DIRECTORY no longer implicitly promotes NIL slots of its
4673 pathname argument to :WILD. In particular, when you ask for the
4674 contents of a directory (which you used to be able to do without
4675 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4676 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4677 ** changes in behavior that ANSI explicitly defines to be
4678 implementation dependent:
4679 *** The new compiler-only implementation still conforms with ANSI,
4680 but acts a little different than before. Besides the obvious
4681 changes in performance tradeoffs (that the cost per form passed
4682 to EVAL has gone up, and the cost per form executed by EVAL
4683 has gone down), the behavior of the system changes a little
4684 because there are no longer any interpreted function objects.
4685 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4686 e.g. doing COMPILE on the output of interactive DEFUN is
4688 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4690 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4691 has changed from (:CL) to NIL.
4692 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4693 e.g. #\Newline and #\Tab, don't have names specified in the
4694 ANSI Common Lisp standard, is now based on their ASCII symbolic
4695 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4696 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4697 are no longer used for output.
4698 ** changes in internal implementation constants:
4699 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4700 4 million. (If your application spends a lot of time GCing and
4701 you have a lot of RAM, you might want to experiment with
4702 increasing it even more.)
4703 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4704 However, almost all old code should still continue to work without
4705 immediate update, as SB-C-CALL is now a (deprecated) nickname
4707 ** Old operator names in the style DEF-FOO are now deprecated in
4708 favor of new corresponding names DEFINE-FOO, for consistency with
4709 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4710 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4711 internal symbols, but a few supported extensions like
4712 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4713 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4714 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4715 etc. as you get deeper into recursive calls to the debugger
4716 command loop, instead of the old "5]", "5]]", "5]]]"
4717 sequence. (I was motivated to do this when squabbles between
4718 ILISP and SBCL left me very deeply nested in the debugger. In the
4719 short term, this change will probably provoke more ILISP/SBCL
4720 squabbles, but hopefully it will be an improvement in the long run.)
4721 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4722 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4723 function, since declaiming return types involving aliens is
4724 (1) annoyingly messy to do by hand and (2) vital to efficient
4725 compilation of code which calls such functions.
4726 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4727 longer reexported by the SB-EXT package. They're solely useful
4728 for alien code, so it seems more logical that you should get
4729 them from the SB-ALIEN package, not in SB-EXT.
4730 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4731 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4732 features. Instead, the code that they used to control is always
4733 built into the system.
4734 * many other bug fixes
4735 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4736 advantage of the new EVAL-WHEN stuff and to clean them up in
4737 general, and they are now more ANSI-compliant in a number of
4738 ways. Martin Atzmueller is responsible for a lot of this.
4739 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4741 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4742 *** correct ERROR type for various file operations
4743 *** some fixes for Lisp streams
4744 *** DEFMETHOD syntax checking
4745 *** changing old weird representation of debug information as
4746 strings (which, among their other deficiencies, don't transform
4747 correctly when you rename packages, and don't change their
4748 print representation when you change things like *PACKAGE*
4749 and *PRINT-LENGTH*) to symbols and lists of symbols
4750 He also made several improvements and fixed several bugs in DESCRIBE.
4751 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4753 *** misbehavior of WRITE-STRING/WRITE-LINE
4754 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4755 and several other LOOP problems as well
4756 *** DIRECTORY when similar filenames are present
4757 *** DEFGENERIC with :METHOD options
4758 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4759 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4760 *** argument ordering in FIND with :TEST option
4761 *** mishandled package designator argument in APROPOS-LIST
4762 *** various problems in the backquote readmacro
4763 *** a bug in APROPOS
4764 *** probably some others that I'm not describing very well here,
4765 since the CVS log documents them by reference to sbcl-devel
4766 messages, and the SourceForge archives aren't working well.:-(
4767 ** Dan Barlow improved the Alpha port (and is making progress on the
4768 PPC port, for those of you who think different).
4769 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4770 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4771 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4772 continues to work on the SPARC port (for those of you in a position
4773 to look down upon our little PC-compatible boxes from a great height).
4774 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4775 and uses that copy, rather than the current dynamic value, when
4776 it's trying to decide whether to truncate output. Thus e.g.
4777 (let ((*print-lines* 50))
4778 (pprint-logical-block (stream nil)
4780 (let ((*print-lines* 8))
4781 (print (aref possiblybigthings i) stream)))))
4782 should now truncate the logical block only at 50 lines, instead of
4783 often truncating it at 8 lines, as it did before.
4784 * The doc/cmucl/ directory, containing old CMU CL documentation
4785 from the time of the fork, is no longer part of the base system.
4786 SourceForge has shut down its anonymous FTP service, and with it
4787 my original plan for distributing the old CMU CL documentation
4788 there. For now, if you need these files you can download an old
4789 SBCL source release and extract them from it.
4790 * The fasl file version number changed again, for dozens of reasons,
4791 some of which are apparent above.
4793 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4794 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4795 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4796 patch, so that DISASSEMBLE output is much nicer.
4797 * The code in the SB-PROFILE package now seems reasonably stable.
4798 I still haven't decided what the final interface should look like
4799 (I'd like PROFILE to interact cleanly with TRACE, since both
4800 facilities use function encapsulation) but if you have a need
4801 for profiling now, you can probably use it successfully with
4802 the current CMU-CL-style interface.
4803 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4804 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4805 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4806 link now returns the dangling link itself, and for similar
4807 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4808 link itself. (In these cases the old code signalled an error and
4809 looped endlessly, respectively.) Thus, DIRECTORY now works even
4810 in the presence of dangling and cyclic symbolic links.
4811 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4812 is now a supported extension again, since the consensus on
4813 sbcl-devel was that it can be useful for ordinary development
4814 work, not just for debugging SBCL itself.
4815 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4816 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4817 that currently-defined functions might be redefined later with
4818 different return types.
4819 * Hash tables can be printed readably, as inspired by CMU CL code
4820 of Eric Marsden and SBCL code of Martin Atzmueller.
4821 * better error handling in CLOS method combination, thanks to
4822 Martin Atzmueller porting Pierre Mai's CMU CL patches
4823 * more overflow fixes for >16Mbyte I/O buffers
4824 * A bug in READ has been fixed, so that now a single Ctrl-D
4825 character suffices to cause end-of-file on character streams.
4826 In particular, now you only need one Ctrl-D at the command
4827 line (not two) to exit SBCL.
4828 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4830 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4831 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4832 does the right thing.
4833 * The implementation of some type tests, especially for CONDITION
4834 types, is now tidier and maybe faster, due to CMU CL code
4835 originally by Douglas Crosher, ported by Martin Atzmueller.
4836 * Some math functions have been fixed, and there are new
4837 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4838 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4839 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4840 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4841 likely to be built into sbcl-0.7.0.)
4842 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4843 CL, ported to SBCL by Martin Atzmueller)
4844 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4845 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4846 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4847 * There's a new slam.sh hack to shorten the edit/compile/debug
4848 cycle for low-level changes to SBCL itself, and a new
4849 :SB-AFTER-XC-CORE target feature to control the generation of
4850 the after-xc.core file needed by slam.sh.
4851 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4852 COMPILE-FILE is no longer supported, so that now every function
4853 gets an entry point, so that block compilation looks a little
4854 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4855 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4856 returns the number of bytes consed since the system started,
4857 rather than the number consed since the first time the function
4858 was called. (The new definition parallels ANSI functions like
4859 CL:GET-INTERNAL-RUN-TIME.)
4860 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4861 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4862 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4863 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4864 * Fasl file version numbers are now independent of the target CPU,
4865 since historically most system changes which required version
4866 number changes have affected all CPUs equally. Similarly,
4867 the byte fasl file version is now equal to the ordinary
4870 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4871 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4872 is no longer recognized. I apologize for this, because it was
4873 listed in SB-EXT as a supported extension, but I found that
4874 its existing behavior was poorly specified, as well as incorrectly
4875 specified, and it looked like too much of a mess to straighten it
4876 out. I have enough on my hands trying to get ANSI stuff to work..
4877 * many patches ported from CMU CL by Martin Atzmueller, with
4878 half a dozen bug fixes in pretty-printing and the debugger, and
4879 half a dozen others elsewhere
4880 * fixed bug 13: Floating point infinities are now supported again.
4881 They might still be a little bit flaky, but thanks to bug reports
4882 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4883 as flaky as they were.
4884 * The --noprogrammer command line option is now supported. (Its
4885 behavior is slightly different in detail from what the old man
4886 page claimed it would do, but it's still appropriate under the
4887 same circumstances that the man page talks about.)
4888 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4889 are now supported, and enabled by default. Thus, the compiler can
4890 handle many floating point and complex operations much less
4891 inefficiently. (Thus e.g. you can implement a complex FFT
4893 * The compiler now detects type mismatches between DECLAIM FTYPE
4894 and DEFUN better, and implements CHECK-TYPE more correctly, and
4895 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4896 thanks to patches from Martin Atzmueller.
4897 * various fixes to make the cross-compiler more portable to
4898 ANSI-conforming-but-different cross-compilation hosts (notably
4899 Lispworks for Windows, following bug reports from Arthur Lemmens)
4900 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4901 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4902 fixed thanks to Pierre Mai's CMU CL patches.
4903 * fixes to keep the system from overflowing internal counters when
4904 it tries to use i/o buffers larger than 16M bytes
4905 * fixed bug 45a: Various internal functions required to support
4906 complex special functions have been merged from CMU CL sources.
4907 (When I was first setting up SBCL, I misunderstood a compile-time
4908 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4909 * improved support for type intersection and union, fixing bug 12
4910 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4911 more obscure bugs as well
4912 * some steps toward byte-compiling non-performance-critical
4913 parts of the system, courtesy of patches from Martin Atzmueller
4914 * Christophe Rhodes has made some debian packages of sbcl at
4915 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4916 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4917 stable, but are nonetheless usable. When he's ready, I'd be happy
4918 to add them to the SourceForge "File Releases" section. (And if
4919 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4920 * new fasl file format version number (because of changes in
4921 internal representation of (OR ..) types to accommodate the new
4922 support for (AND ..) types, among other things)
4924 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4925 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4927 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4929 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4930 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4931 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4932 * DESCRIBE now works on structure objects again.
4933 * Most function call argument type mismatches are now handled as
4934 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4935 know whether the function will be redefined before the call is
4936 executed. (The compiler could flag local calls with full WARNINGs,
4937 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4938 it doesn't keep track of enough information to know whether calls
4939 are local in this sense.)
4940 * Compiler output is now more verbose, with messages truncated
4941 later than before. (There should be some supported way for users
4942 to override the default verbosity, but I haven't decided how to
4943 provide it yet, so this behavior is still controlled by the internal
4944 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4945 src/compiler/ir1util.lisp.)
4946 * Fasl file format version numbers have increased again, because
4947 support for the Gray streams extension changes the layout of the
4948 system's STREAM objects.
4949 * The Gray subclassable streams extension now works, thanks to a
4950 patch from Martin Atzmueller.
4951 * The full LOAD-FOREIGN extension (not just the primitive
4952 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4953 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4954 but like most other programs, it defaults to copying the Unix
4955 environment from the original process instead of starting the
4956 new process in an empty environment.
4957 * Extensions which manipulate the Unix environment now support
4958 an :ENVIRONMENT keyword option which doesn't smash case or
4959 do other bad things. The CMU-CL-style :ENV option is retained
4960 for porting convenience.
4961 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4962 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4964 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4966 * A patch from Martin Atzmueller seems to have solved the SIGINT
4967 problem, and as far as we know, signal-handling now works cleanly.
4968 (If you find any new bugs, please report them!)
4969 * The system no longer defaults Lisp source file names to types
4970 ".l", ".cl", or ".lsp", but only to ".lisp".
4971 * The compiler no longer uses special default file extensions for
4972 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4973 seems to expect a single default extension for all compiled code,
4974 and there's no compelling reason to try to stretch the standard
4975 to allow two different extensions.) Instead, byte-compiled files
4976 default to the same extension as native-compiled files.
4977 * Fasl file format version numbers have increased again, because
4978 a rearrangement of internal implementation packages made some
4979 dumped symbols in old fasl files unreadable in new cores.
4980 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4981 many fewer weird special cases.
4982 * Bug #17 (differing COMPILE-FILE behavior between logical and
4983 physical pathnames) has been fixed, and some related misbehavior too,
4984 thanks to a patch from Martin Atzmueller.
4985 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4986 by Tim Moore, ported to SBCL by Martin Atzmueller.
4987 * Martin Atzmueller fixed several filesystem-related problems,
4988 including bug #36, in part by porting CMU CL patches, which were
4989 written in part by Paul Werkowski.
4990 * More compiler warnings in src/runtime/ are gone, thanks to
4991 more patches from Martin Atzmueller.
4992 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4995 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4997 * DESCRIBE now works on CONDITION objects.
4998 * The debugger now handles errors which arise when trying to print
4999 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5001 * The build system now uses an additional file, customize-target-features.lisp,
5002 to allow local modifications to the target *FEATURES* list. (The point of
5003 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5004 debugging features enabled, without having to worry about propagating it
5005 into everyone's system when I do a "cvs update".) When no
5006 customize-target-features.lisp file exists, the target *FEATURES* list
5007 should be constructed the same way as before.
5008 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5009 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5010 warn about behavior which is undefined under the ANSI spec. Note: This
5011 is specified by ANSI, but it's not very popular with programmers.
5012 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5013 macro in the SBCL sources for an example of a workaround which you
5014 might use to make portable ANSI-standard code which does what you want.
5015 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5016 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5017 when it's used as a non-toplevel form. (This is required in order
5018 to implement the DEFCONSTANT-EQX macro.)
5019 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5020 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5021 funny things, due to bugs in the implementation of EVAL-WHEN
5022 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5023 non-toplevel DEFCONSTANTs are uncommon.)
5024 * The core file version number and fasl file version number have been
5025 incremented, because the old noncompliant DEFCONSTANT behavior involved
5026 calling functions which no longer exist, and because I also took the
5027 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5028 * fixed bug 1 (error handling before read-eval-print loop starts), and
5029 redid debugger restarts and related debugger commands somewhat while
5031 ** The QUIT debugger command is gone, since it did something
5032 rather different than the SB-EXT:QUIT command, and since it never
5033 worked properly outside the main toplevel read/eval/print loop.
5034 Invoking the new TOPLEVEL restart provides the same functionality.
5035 ** The GO debugger command is also gone, since you can just invoke
5036 the CONTINUE restart directly instead.
5037 ** The TOP debugger command is also gone, since it's redundant with the
5038 FRAME 0 command, and since it interfered with abbreviations for the
5040 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5042 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5043 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5044 some porting work by Martin Atzmueller)
5045 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5046 with a boatload of patches which he ported to SBCL. Now that those
5048 ** The system tries to make sure that its low-priority messages
5049 are prefixed by semicolons, to help people who like to use
5050 syntax highlighting in their ILISP buffer. (This patch
5051 was originally due to Raymond Toy.)
5052 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5053 patches originally written by Raymond Toy.
5054 ** The compiler understands coercion between single-value and
5055 multiple-VALUES type expressions better, getting rid of some very
5056 weird behavior, thanks to patches originally by Robert MacLachlan
5057 and Douglas Crosher.
5058 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5059 lambda lists, thanks to a patch originally by Pierre Mai.
5060 ** The system no longer bogusly warns about "abbreviated type
5062 ** The compiler gets less confused by inlining and RETURN-FROM,
5063 thanks to some patches originally by Tim Moore.
5064 ** The system no longer hangs when dumping circular lists to fasl
5065 files, thanks to a patch originally from Douglas Crosher.
5066 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5067 undefined function error.
5068 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5069 in structure slot initforms) for now, documented workaround instead:-|
5070 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5071 * fixed bug 5: added stubs for various Gray stream functions called
5072 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5073 installed, at least appropriate type errors are generated
5074 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5075 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5076 consistently in DEFMETHOD forms.
5077 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5078 it doesn't seem to affect SBCL after all
5079 * The C runtime system now builds with better optimization and many
5080 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5082 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5084 * The system is now under CVS at SourceForge (instead of the
5085 CVS repository on my home machine).
5086 * The new signal handling code has been tweaked to treat register
5087 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5088 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5089 downstream, e.g. in debug-int.lisp, has implicit dependencies
5090 on the unsignedness of integer representation of machine words,
5091 and that caused the system to bomb out with infinite regress
5092 when trying to recover from type errors involving signed values,
5093 e.g. (BUTLAST '(1 2 3) -1).)
5094 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5095 (This was one of the bugs Peter Van Eynde reported back in July.)
5096 * The system now uses code inspired by Colin Walters' O(N)
5097 implementation of MAP (from the cmucl-imp@cons.org mailing
5098 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5099 inline the MAP operation, and there is more than one
5100 sequence argument to the MAP call (so that it can't just
5101 do ETYPECASE once and for all based on the type of the
5102 single sequence argument). (The old non-inline implementation
5103 of the general M-argument sequence-of-length-N case required
5104 O(M*N*N) time when any of the sequence arguments were LISTs.)
5105 * The QUIT :UNIX-CODE keyword argument has been renamed to
5106 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5107 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5109 * Raymond Wiker's patches to port dynamic loading from Linux to
5110 FreeBSD have been added.
5111 * The BUGS file is now more nearly up to date, thanks in large part
5112 to Martin Atzmueller's review of it.
5113 * The debugger now flushes standard output streams before it begins
5114 its output ("debugger invoked" and so forth).
5115 * The core version number and fasl file version number have both
5116 been incremented, because of incompatible changes in the layout
5118 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5119 used to not be called for a saved Lisp image.)
5120 * Martin Atzmueller's version of a patch to fix a compiler crash,
5121 as posted on sbcl-devel 13 September 2000, has been installed.
5122 * Instead of installing Martin Atzmueller's patch for the
5123 compiler transform for SUBSEQ, I deleted the compiler transform,
5124 and transforms for some similar consing operations.
5125 * A bug in signal handling which kept TRACE from working on OpenBSD
5127 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5128 away by constant folding
5129 * The system now defines its address space constants in one place
5130 (in the Lisp sources), and propagates them automatically elsewhere
5131 (through GENESIS and the sbcl.h file). Therefore, patching the
5132 address map is less unnecessarily tedious and error-prone. The
5133 Lisp names of address space constants have also been systematized.
5134 * CVS tags like dollar-Header-dollar have been removed from
5135 the sources, because they have never saved me trouble and
5136 they've been source of trouble working with patches and other
5137 diff-related operations.
5138 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5139 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5141 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5143 * The system has been ported to OpenBSD.
5144 * The system now compiles with a simple "sh make.sh" on the systems
5145 that it's supported on. I.e., now you no longer need to tweak
5146 text in the target-features.lisp-expr and symlinks in src/runtime/
5147 by hand, the make.sh takes care of it for you.
5148 * The system is no longer so grossly inefficient when compiling code
5149 involving vectors implemented as general (not simple) vectors (VECTOR T),
5150 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5151 which dares to use the various sequence functions on non-simple
5152 vectors, takes less of a performance hit.
5153 * There is now a primitive type predicate VECTOR-T-P
5154 to test for the (VECTOR T) type, so that e.g.
5155 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5156 can now be compiled with some semblance of efficiency. (The old code
5157 turned the type declaration into a full call to %TYPEP at runtime!)
5158 * AREF on (VECTOR T) is still not fast, since it's still compiled
5159 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5160 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5161 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5162 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5163 without making full calls to SUBTYPEP at runtime.
5164 (Some analogous efficiency issues for non-simple vectors specialized to
5165 element types other than T, or for non-simple multidimensional arrays,
5166 have not been addressed. They could almost certainly be handled the
5167 same way if anyone is motivated to do so.)
5168 * The changes in array handling break binary compatibility, so
5169 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5170 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5171 instead of (VALUES T T).
5172 * By following the instructions that Dan Barlow posted to sbcl-devel
5173 on 2 July 2000, I was able to enable primitive dynamic object
5174 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5175 functionality is not implemented (since it calls ld to resolve
5176 library references automatically, requiring RUN-PROGRAM for its
5177 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5178 try to resolve library references) is now supported.
5179 * The system now flushes the standard output streams when it terminates,
5180 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5181 them at several other probably-convenient times, e.g. in each pass of
5182 the toplevel read-eval-print loop, and after evaluating a form given
5183 as an "--eval" command-line option. (These changes were motivated by a
5184 discussion of stream flushing issues on cmucl-imp in August 2000.)
5185 * The source transform for TYPEP of array types no longer assumes
5186 that an array whose element type is a not-yet-defined type
5187 is implemented as an array of T, but instead punts, so that the
5188 type will be interpreted at runtime.
5189 * There is now some support for cross-compiling in make.sh: each of
5190 the phases of make.sh has its own script. (This should be transparent
5191 to people doing ordinary, non-cross-compile builds.)
5192 * Since my laptop doesn't have hundreds of megabytes of memory like
5193 my desktop machine, I became more motivated to do some items on
5194 my to-do list in order to reduce the size of the system a little:
5195 ** Arrange for various needed-only-at-cold-init things to be
5196 uninterned after cold init. To support this, those things have
5197 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5198 symbols with such names are now uninterned after cold init).
5199 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5200 fasl files for cold load.
5201 ** Remove the old compiler structure pooling code (which used to
5202 be conditional on the target feature :SB-ALLOC) completely.
5203 ** Redo the representation of some data in cold init to be more compact.
5204 (I also looked into supporting byte compiled code at bootstrap time,
5205 which would probably reduce the size of the system a lot, but that
5206 looked too complicated, so I punted for now.)
5207 * The maximum signal nesting depth in the src/runtime/ support code has
5208 been reduced from 4096 to 256. (I don't know any reason for the very
5209 large old value. If the new smaller value turns out to break something,
5210 I'll probably just bump it back up.)
5211 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5213 * Many, many bugs reported by Peter Van Eynde have been added to
5214 the BUGS list; some have even been fixed.
5215 * While enabling dynamic object file loading, I tried to make the
5216 code easier to understand, renaming various functions and variables
5217 with less ambiguous names, and changing some function calling
5218 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5219 * While trying to figure out how to do the OpenBSD port, I tried to
5220 clean up some of the code in src/runtime/. In particular, I dropped
5221 support for non-POSIX signal handling, added various comments,
5222 tweaked the code to reduce the number of compilation warnings, and
5223 renamed some files to increase consistency.
5224 * To support the new automatic configuration functionality in make.sh,
5225 the source file target-features.lisp-expr has been replaced with the
5226 source file base-target-features.lisp-expr and the machine-generated
5227 file local-target-features.lisp-expr.
5228 * fixed a stupid quoting error in make.sh so that using CMU CL
5229 "lisp -batch" as cross-compilation host works again
5231 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5233 * DESCRIBE no longer tries to call itself recursively to describe
5234 bound/fbound values, so that it no longer fails on symbols which are
5235 bound to themselves (like keywords, T, and NIL).
5236 * DESCRIBE now works on generic functions.
5237 * The printer now prints less-screwed-up representations of closures
5238 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5239 * A private symbol is used instead of the :EMPTY keyword previously
5240 used to mark empty slots in hash tables. Thus
5241 (DEFVAR *HT* (MAKE-HASH-TABLE))
5242 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5243 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5244 now does what ANSI says that it should. (You can still get
5245 similar noncompliant behavior if bang on the hash table
5246 implementation with all the symbols you get back from
5247 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5248 This breaks binary compatibility, since tests for equality to
5249 :EMPTY are wired into things like the macroexpansion of
5250 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5252 * There's now a minimal placeholder implementation for CL:STEP,
5253 as required by ANSI.
5254 * An obscure bug in the interaction of the normal compiler, the byte
5255 compiler, inlining, and structure predicates has been patched
5256 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5257 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5259 * Missing ordinary arguments in a macro call are now detected even
5260 when the macro lambda list contains &KEY or &REST.
5261 * The debugger no longer complains about encountering the top of the
5262 stack when you type "FRAME 0" to explicitly instruct it to go to
5263 the top of the stack. And it now prints the frame you request even
5264 if it's the current frame (instead of saying "You are here.").
5265 * As specified by ANSI, the system now always prints keywords
5266 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5268 * The default initial SIZE of HASH-TABLEs is now smaller.
5269 * Type information from CLOS class dispatch is now propagated
5270 into DEFMETHOD bodies, so that e.g.
5271 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5273 is now basically equivalent to
5274 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5275 (DECLARE (TYPE SINGLE-FLOAT X))
5277 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5278 operation, without having to do run-time type dispatch.
5279 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5280 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5281 * Since I don't seem to be making big file reorganizations very often
5282 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5283 is overflowing my ability to conveniently back them up), I've finally
5284 checked the system into CVS. (The CVS repository is on my home system,
5285 not at SourceForge -- putting it on SourceForge might come later.)
5286 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5287 high-level GC-NOTIFY-FOO functions send their output. (There's
5288 still very little control of where low-level verbose GC functions
5289 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5290 less than it used to -- the GC-NOTIFY-FOO functions are now under
5291 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5292 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5293 in only one place in the source code, and propagates it automatically
5294 everywhere that it's needed. Thus e.g. when I bump the version from
5295 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5296 * The C source files now include boilerplate legalese and documentation
5297 at the head of each file (just as the Lisp source files already did).
5298 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5299 to his page will be replaced with a link to his new CLiki service.
5301 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5303 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5304 * The build process now looks for GNU make under the default name "gmake",
5305 instead of "make" as it used to. If GNU make is not available as "gmake"
5306 on your system, you can change this default behavior by setting the
5307 GNUMAKE environment variable.
5308 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5309 can build without error under CMU CL.
5311 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5313 * There is now a partial SBCL user manual (with some new text and some
5314 text cribbed from the CMU CL manual).
5315 * The beginnings of a profiler have been added (starting with the
5316 CMU CL profiler and simplifying and cleaning up). Eventually the
5317 main interface should be through the TRACE macro, but for now,
5318 it's still accessed through vaguely CMU-CL-style functions and macros
5319 exported from the package SB-PROFILE.
5320 * Some problems left over from porting CMU CL to the new
5321 cross-compilation bootstrap process have been cleaned up:
5322 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5323 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5324 part when getting rid of the compiler *BACKEND* stuff.)
5325 ** The value of *NULL-TYPE* was screwed up, because it was
5326 being initialized before the type system knew the final
5327 definition of the 'NULL type. This screwed up several key
5328 optimizations in the compiler, causing inefficiency in all sorts
5329 of places. (I found it because I wanted to understand why
5330 GET-INTERNAL-RUN-TIME was consing.)
5331 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5332 PROCLAIM FTYPE information. Unfortunately this broke binary
5333 compatibility again, since now the forms output by DEFGENERIC
5334 to refer to functions which didn't exist in 0.6.3.
5335 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5336 can use the new (as of 0.6.3) transform for SOME into MAP into
5338 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5339 values to (INTEGER 0 1000000), so that the time code will no longer
5340 occasionally get blown up by Linux returning 1000000 microseconds
5341 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5342 its output conform to the ANSI spec. (Alas, this makes its output
5343 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5344 * A full call to MAP NIL with a single sequence argument no longer conses.
5345 * fixes to problems pointed out by Martin Atzmueller:
5346 * The manual page no longer talks about multiprocessing as though
5347 it were currently supported.
5348 * The ILISP support patches have been removed from the distribution,
5349 because as of version 5.10.1, ILISP now supports SBCL without us
5350 having to maintain patches.
5351 * added a modified version of Raymond Toy's recent CMU CL patch for
5352 EQUALP comparison of HASH-TABLE
5354 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5356 * The system still can't cross-compile itself with
5357 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5358 entails), but at least it can compile more of itself that way
5359 than it used to be able to, and various buglets which were uncovered
5360 by trying to cross-compile itself that way have now been fixed.
5361 * This release breaks binary compatibility again. This time
5362 at least I've incremented the FASL file format version to 2, so that the
5363 problem can be detected reliably instead of just causing weird errors.
5364 * various new style warnings:
5365 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5366 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5367 ** using the lexical binding of a variable named in the *FOO* style
5368 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5369 as specified by ANSI.
5370 * *RANDOM-STATE* is no longer automatically initialized from
5371 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5372 default behavior of the system is to repeat its behavior every time
5373 it's run. If you'd like to change this behavior, you can always
5374 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5375 old convention there was no comparably easy way to get the system to
5376 repeat its behavior every time it was run.
5377 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5378 FTYPE declarations has been removed, in favor of their ANSI
5379 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5380 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5381 the types of their sequence arguments can be determined at compile time.
5382 This is done through a new open code expansion for MAP which eliminates
5383 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5384 argument types can be determined at compile time.
5385 * The optimizer now transforms COERCE into an identity operation when it
5386 can prove that the coerced object is already of the correct type. (This
5387 can be a win for machine generated code, including the output of other
5388 optimization transforms, such as the MAP transform above.)
5389 * Credit information has been moved from source file headers into CREDITS.
5390 * Source file headers have been made more standard.
5391 * The CASE macro now compiles without complaining even when it has
5394 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5396 * (Note that the way that the PCL macroexpansions were rewritten
5397 to accommodate the change in DEFGENERIC below breaks binary
5398 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5399 not run under sbcl-0.6.2. Once we get out of alpha releases,
5400 i.e. hit release 1.0.0, we'll probably try to maintain binary
5401 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5402 and sbcl-1.4.4. Until then, however, it might be fairly common
5403 for maintenance releases to break binary compatibility.)
5404 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5406 * The reporting of unhandled signals has been changed to print some
5407 explanatory text as well as the report form. (Previously only
5408 the report form was printed.)
5409 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5410 it defines, so that the compiler no longer issues undefined function
5411 warnings for compiled-but-not-yet-loaded generic functions.
5412 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5413 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5414 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5415 section of the ANSI spec are supported.
5416 * The "" nickname for the "KEYWORD" package has been removed.
5417 The reader still handles symbol tokens which begin with a package marker
5418 as keywords, but it doesn't expose its mechanism for doing so in the
5419 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5420 * The system now issues STYLE-WARNINGs for contradictory TYPE
5421 proclamations. (Warnings for contradictory FTYPE proclamations would
5422 be nice too, but those can't be done usefully unless the type system
5423 is made smarter about FUNCTION types.)
5424 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5425 systematized, so that "*target-*.lisp is supposed to exist only on the
5426 target and imply that there's a related file which exists on the
5427 host, and *host-*.lisp is supposed to exist only on the host and imply
5428 that there's a related file which exists on the target. This involves a
5429 lot of renaming. Hopefully the acute confusion caused by the renaming
5430 will be justified by the reduction in chronic confusion..
5431 ** runtime-type.lisp -> early-target-type.lisp
5432 ** target-type.lisp -> late-target-type.lisp
5433 ** early-host-format.lisp -> early-format.lisp
5434 ** late-host-format.lisp -> late-format.lisp
5435 ** host-error.lisp -> misc-error.lisp
5436 ** early-error.lisp -> early-target-error.lisp
5437 ** late-error.lisp -> late-target-error.lisp
5438 ** host-defboot.lisp -> early-defboot.lisp
5439 ** code/misc.lisp -> code/target-misc.lisp
5440 ** code/host-misc.lisp -> code/misc.lisp
5441 ** code/numbers.lisp -> code/target-numbers.lisp
5442 ** code/early-numbers.lisp -> numbers.lisp
5443 ** early-host-type.lisp -> early-type.lisp
5444 ** late-host-type.lisp -> late-type.lisp
5445 ** host-typep.lisp -> typep.lisp
5446 ** load.lisp -> target-load.lisp
5447 ** host-load.lisp -> load.lisp
5448 ** host-disassem.lisp -> disassem.lisp
5449 ** host-insts.lisp -> insts.lisp
5450 ** byte-comp.lisp -> target-byte-comp.lisp
5451 ** host-byte-comp.lisp -> byte-comp.lisp
5452 ** host-signal.lisp -> signal.lisp
5453 ** host-defstruct.lisp -> defstruct.lisp
5454 ** late-target-type.lisp -> deftypes-for-target.lisp
5455 Furthermore, several other previously target-only files foo.lisp (e.g.
5456 hash-table.lisp and random.lisp) have been split into a target-and-host
5457 foo.lisp file and a target-only target-foo.lisp file, with their key type
5458 definitions in the target-and-host part, so that the cross-compiler will
5459 know more about target types.
5460 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5461 gone away. In their place are various *BACKEND-FOO* variables
5462 corresponding to the slots of the old structure.
5463 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5464 into the target SBCL has been fixed.
5465 * The chill.lisp system for loading cold code into a running SBCL
5467 * Support for the CMU CL "scavenger hook" extension has been removed.
5468 (It was undocumented and unused in the CMU CL sources that SBCL was
5469 derived from, and stale in sbcl-0.6.1.)
5470 * Various errors in the cross-compiler type system were detected
5471 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5472 (enabling various consistency checks). Many of them were fixed,
5473 but some hard problems remain, so the compiler is back to
5474 running without *TYPE-SYSTEM-INITIALIZED* for now.
5475 * As part of the cross-compiler type system cleanup, I implemented
5476 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5477 * I have started adding UNCROSS calls throughout the type system
5478 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5479 on cross-compiler input files will be able to go away, and various
5481 * CONSTANTP now returns true for quoted forms (as explicitly required
5484 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5486 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5487 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5488 (MAKE-LIST -1). In the longer term, it ought to become true
5489 that declarations are assertions even at SAFETY 1. For now, it's not
5490 quite true even at SAFETY 3, but it's at least more nearly true..
5491 (Note that this change seems to increases the size of the system by
5492 O(5%) and to decrease the speed of the compiler by 20% or more.)
5493 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5494 for the problem of printing dozens of lines of distracting information
5495 about low-level system machinery as part of the top stack frame
5496 on entry to the debugger when an undefined function was called.
5497 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5498 is not reset to COMMON-LISP-USER.
5499 * Compilation of stuff related to dyncount.lisp has been made conditional
5500 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5501 smaller. The various dyncount-related symbols have been moved into
5502 a new "SB-DYNCOUNT" package.
5503 * tty-inspect.lisp has been renamed to inspect.lisp.
5504 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5505 feature has gone away. (When we eventually port to other flavors of
5506 libc and/or Unix, we'll try to make the differences between flavors
5507 invisible at the user level.)
5508 * Various other *FEATURES* tags, and/or their associated conditionals,
5509 have been removed if obsolescent, or given better documentation, or
5510 sometimes given more-mnemonic names.
5512 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5514 * tidied up "make.sh" script
5515 * tidied up system directory structure
5516 * better "clean.sh" behavior
5517 * added doc/FOR-CMUCL-DEVELOPERS
5518 * many many small tweaks to output format, e.g. removing possibly-confusing
5519 trailing #\. character in DESCRIBE-INSTANCE
5520 * (EQUALP #\A 'A) no longer signals an error.
5521 * new hashing code, including EQUALP hashing
5522 * tidied up Lisp initialization and toplevel
5523 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5524 * command line argument processing
5525 * added POSIX-GETENV function to deal with Unix-ish environment variables
5526 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5527 terminating SBCL on EOF
5528 * non-verbose GC by default
5529 * There is no more "sbcl" shell script; the sbcl file is now the C
5530 runtime executable (just like CMU CL).
5531 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5533 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5534 symbol and package information as Lisp native symbol and package objects
5535 instead of strings naming symbols and strings naming packages. This way,
5536 whenever packages are renamed (as in warm init), debug information is
5537 transformed along with everything else.
5538 * tweaked the optimization policy declarations which control the building
5539 of SBCL itself. Now, among other things, the system no longer saves
5540 source location debugging information. (This helps two problems at once
5541 by reducing SBCL size and by keeping SBCL from trying to look for its
5542 sources -- which may not exist -- when reporting errors.)
5543 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5544 debugging and testing purposes
5545 * cleaned up printing, making the printer call PRINT-OBJECT for
5546 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5547 methods, giving nearly-ANSI behavior
5548 * converted almost all special variables to use *FOO* naming convention
5549 * deleted PARSE-TIME functionality, since it can be done portably
5550 * moved some files out of cold init into warm init
5551 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5553 * regularized formatting of source files
5554 * added an install.sh script
5555 * fixed ridiculous memory usage of cross-compiler by making
5556 compiler/alloc.lisp not try to do pooling unless it can hook
5557 itself into the GC of the cross-compilation host. Now the system
5558 builds nicely on my old laptop.
5559 * added :SB-ALLOC in target-features.lisp-expr
5560 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5561 was not implemented)
5562 * re-did condition handling and note reporting in the compiler. Notes
5563 are no longer handled by signalling conditions. Style warnings
5564 and warnings are handled more correctly and reported in such a way
5565 that it's easy to find one or the other in your output (so that you
5566 can e.g. figure out which of many problems caused COMPILE-FILE to
5568 * changed the severity of several compiler warnings from full WARNING
5569 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5570 compiler note reporting so that it doesn't use the condition system
5571 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5572 COMPILE-FILE command)
5573 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5574 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5575 no longer supported, since their implementation was deeply intertwingled
5576 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5577 * removed bogus "support" for compiler macros named (SETF FOO), and
5578 removed the compiler macro for SETF INFO (but only after making a fool
5579 of myself on the cmucl-imp mailing list by posting a bogus patch for
5580 DEFINE-COMPILER-MACRO..)
5581 * Compiled files containing forms which have side effects on the Lisp
5582 reader (such as DEFPACKAGE forms) are now handled more correctly.
5583 (Compiler queuing of top level lambdas has been suppressed by setting
5584 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5585 * deleted various currently-unused source files, e.g. gengc.lisp. They
5586 may be added back at some point e.g. when porting to other architectures,
5587 but until they are it's distracting to distribute them and to try to
5589 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5590 there were so many of them they're just distractions, and UNCROSS is
5591 known to be able to handle the current sources
5592 * moved PROFILE functionality into TRACE, so that it will be clear
5593 how the wrapping and unwrapping of functions when you profile them
5594 interacts with the wrapping and unwrapping of functions when you
5595 trace them. (Actually, the functionality isn't there yet, but at least
5596 the interface specification is there. Hopefully, the functionality will
5597 arrive with some future maintenance release.)
5598 * removed host-oops.lisp
5599 * changed signature of QUIT function to allow UNIX-CODE argument
5600 * fixed READ-SEQUENCE bug
5601 * tweaked verbose GC output so that it looks more like the progress
5602 output that ANSI specifies for functions like LOAD
5603 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5604 * added <http://sbcl.sourceforge.com> to the banner information printed by