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 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
14 in :INITIAL-CONTENTS. (lp#523612)
15 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
16 functions. (lp#524707)
17 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
18 WITH-SLOTS usages during compilation.
19 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
20 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
21 all x86oid platforms with :UD2-BREAKPOINTS target feature.
22 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
23 instruction (tested on x86oid linux with ud2-breakpoints).
24 * bug fix: slam.sh now works on win32.
25 * bug fix: better differences of numeric types. (lp#309124)
26 * bug fix: arrays declared intersection and union types can have their
27 upgraded element type derived. (lp#316078)
28 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
29 threads started during profiling. (lp#472499)
30 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
33 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
34 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
35 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
36 but work on type specifiers.
37 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
38 to name a type specifier.
39 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
40 specifier is valid where "valid" basically means "would be accepted as
41 second argument of TYPEP".
42 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
43 returns the function's declared, or derived FTYPE.
44 * new feature: SB-POSIX now supports accessing the d_ino member of
45 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
46 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
47 provide for seeding a RANDOM-STATE object with user-provided data or
48 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
49 attempt to initialize the returned state from the operating system's
50 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
51 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
52 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
53 * bug fix: Fix grammar and style issues for the docstrings of
54 printer-related variables and functions. (Thanks to mon_key; launchpad
56 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
58 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
59 in a row even though a handler defered the deadline long into the
61 * bug fix: A deadline handler was run without interrupts enabled for a
62 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
63 in infinitely spinning, non-killable threads.
64 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
65 before reaching the erring stack frame.
66 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
67 real power. (launchpad bug lp#525949)
68 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
69 GENCGC platforms. (launchpad bug lp#529014)
70 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
71 (launchpad bug lp#525916)
72 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
73 (Thanks to Robert Goldman)
75 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
76 * optimization: ROUND with a single single-float or double-float argument
77 is properly inlined when possible.
78 * optimization: Slightly better code is generated for integer<->float
79 conversions and for single-float<->double-float conversions on x86-64.
80 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
81 code for 32-bit and 64-bit rotations on x86-64.
82 * bug fix: The install script changes the ownership of directories as well
83 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
84 launchpad bug lp#508485)
85 * bug fix: TRUNCATE with a single single-float or double-float argument is
86 properly inlined when possible. (launchpad bug lp#489388)
87 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
88 no longer causes a compiler error on x86 and ppc.
89 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
90 always relative to *READTABLE* rather than the passed argument.
92 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
93 * minor incompatible change: threading support is now enabled by default
95 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
97 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
98 are now caught and reported just like errors during macroexpansion.
99 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
100 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
101 * enhancement: ASDF systems can now depends on SB-QUEUE.
102 * fixes and improvements related to Unicode and external formats:
103 ** bug fix: error handling and restart usage in the ucs-2 external format
105 ** there is now an implementation of the ucs-4 external format.
106 ** the utf-16 and utf-32 external formats are supported.
107 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
108 in the environment. setenv() and unsetenv() are also provided. (reported by
109 Fare Rideau; launchpad bug lp#460455)
110 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
111 loading. This ensures sensible errors for .FASL files from other
112 implementations on case-insensitive filesystems. (reported by Willem
113 Broekema; launchpad bug lp#489417)
114 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
115 Willem Broekema; launchpad bug lp#489698).
116 * bug fix: some minor code rearrangements to reenable warning-free building
117 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
118 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
120 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
123 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
124 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
125 * improvement: support O_LARGEFILE access to files larger than 2GB on
126 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
127 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
128 definitions for methods specializing on the passed class itself.
129 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
130 definitions for methods specializing on the passed class itself, or on
132 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
133 about itself during the build (e.g. for M-? in Slime), if this flag is
134 enabled in customize-target-features.lisp. This will increase the core
135 size by about 5-6mb, though, so it's mostly interesting to SBCL
137 * new feature: various GENCGC tuning parameters have been experimentally
138 documented and exported from SB-EXT. See documentation for details.
139 * fixes and improvements related to Unicode and external formats:
140 ** the Unicode character database has been upgraded to the
141 Unicode 5.2 standard, giving names and properties to a number of new
142 characters, and providing a few extra characters with case
144 ** improvement: restarts for providing replacement input/output on coding
145 errors for fd-stream external formats.
146 ** improvement: where :<encoding> is a keyword corresponding to an
147 external format the system supports, it is now possible to specify
148 (:<encoding> :replacement <character>) as an external format which will
149 automatically substitute <character> on encoding or decoding errors for
150 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
152 ** improvement: the file streams underlying the standard streams (such as
153 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
154 which uses the replacement mechanism to handle encoding errors,
155 preventing various infinite error chains and unrecoverable I/O
157 ** minor incompatible change: the utf-8 external format now correctly
158 refuses to encode Lisp characters in the surrogate range (char-codes
159 between #xd800 and #xdfff).
160 ** fix a typo preventing conversion of strings into octet vectors
161 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
163 ** fix a bug in the octet multibyte handling of decoding errors and the
164 USE-VALUE restart. (launchpad bug lp#314939)
165 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
166 restart on fd-stream decoding errors.
167 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
168 error is near the end of file.
169 ** fix a double-error case in unibyte octet conversions, when the first
170 use of USE-VALUE is ignored.
171 ** fix bugs in handling of undefined code points in unibyte encodings.
172 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
173 streams after an UNREAD-CHAR.
174 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
175 object is allocated in a boxed region of dynamic space.
176 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
177 fork with multiple Lisp threads running is made, instead of going
178 ahead with unpredictable consequences. (reported by Leslie Polzer)
179 * bug fix: uses of slot accessors on specialized method parameters within
180 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
181 error while finalizing the class. This fix may cause classes with slot
182 accessors to be finalized later than previously. (reported by Lars Rune
183 Nøstdal; launchpad bug lp#473699)
184 * bug fix: restore buildability on the MIPS platform. (regression from
185 1.0.30.38, reported by Samium Gromoff)
186 * bug fix: inspecting closures is less likely to fail with a type error.
187 * bug fix: no timer starvation when setting the system clock back.
188 (launchpad bug lp#460283)
189 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
190 standard pprint dispatch table as specified by CLHS.
191 * bug fix: give CLISP a hint about a type declaration to enable it to build
192 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
194 * bug fix: correctly dump literal objects in defaulting forms of arglists.
195 (reported by Attila Lendvai; launchpad bug lp#310132)
196 * bug fix: distinguish in type specifiers between arrays that might be
197 complex and arrays that are definitely complex. (launchpad bug lp#309129)
198 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
199 type. (reported by Levente Mészáros; launchpad bug lp#485972)
200 * bug fix: setting the value of a symbol-macro within a method in the
201 presence of type declarations works properly again. (reported by Iban
202 Hatchondo; launchpad bug lp#485019)
204 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
205 * optimization: faster FIND and POSITION on strings of unknown element type
206 in high SPEED policies. (thanks to Karol Swietlicki)
207 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
209 * improvement: better error signalling for bogus parameter specializer names
210 in DEFMETHOD forms (reported by Pluijzer)
211 * bug fix: DELETE-FILE once again works on logical pathnames (regression
213 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
215 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
216 removes previous default initargs (reported by Lars Rune Nøstdal and
218 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
219 lambda-lists. (reported by Peter Seibel)
220 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
221 correctly when starting from an executable core without saved runtime
222 options (reported by Faré Rideau, thanks to Zach Beane)
223 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
224 an optimization note instead. (reported by Martin Cracauer)
225 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
226 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
227 new process group if it doesn't need to share stdin with the sbcl
228 process. (thanks to Leslie Polzer)
229 * bug fix: SATISFIES could be misoptimized to refer to a local function.
230 (reported by Stanislaw Halik)
232 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
233 * improvement: stack allocation is should now be possible in all nested
234 inlining cases: failure to stack allocate when equivalent code is manually
235 open coded is now considered a bug.
236 * improvements related to Unicode:
237 ** the Unicode character database has been upgraded to the
238 Unicode 5.1 standard, giving names and properties to a number of new
239 characters, and providing a few extra characters with case
241 ** the system now recognizes and produces names for Unicode Hangul
243 ** the EBCDIC-US external-format is now supported for octet operations
244 (as well as for stream operations).
245 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
246 be used to output toplevel compile-time effects into a separate .CFASL
248 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
249 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
251 * optimization: TRUNCATE on known single- and double-floats is upto 25%
253 * optimization: division of floating point numbers by constants uses
254 multiplication by reciprocal when an exact reciprocal exists.
255 * optimization: multiplication of single- and double-floats floats by
256 constant two has been optimized.
257 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
258 sufficient type information is available. (thanks to Leslie Polzer)
259 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
260 known structure objects are as efficient as defstruct generated accessors.
261 * optimization: unused vector creation can now be optimized away.
262 * improvement: ASDF systems can now depends on SB-INTROSPECT.
263 * improvement: a STYLE-WARNING is signalled when a generic function
264 clobbers an earlier FTYPE proclamation.
265 * improvement: the compiler is able to track the effective type of
266 generic function across method addition and removal even in the
267 absence of an explicit DEFGENERIC.
268 * improvement: DESCRIBE now reports on symbols naming undefined
269 but assumed or declared function as well.
270 * improvement: recompilation of systems using SB-GROVEL now works
271 (thanks to Leslie Polzer)
272 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
273 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
275 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
276 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
277 well as user defined declaration names.
278 ** VARIABLE-INFORMATION is now aware of alien variables.
279 * improvement: improved address space layout on OpenBSD (thanks to Josh
281 * improvement: pretty-printing of various Lisp forms has been improved
282 (thanks to Tobias Rittweiler)
283 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
284 unused were deleted in safe code. (reported by John Fremlin)
285 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
287 * bug fix: some out-of-line array predicates were missing (reported by
289 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
291 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
292 (thanks to Larry D'Anna)
293 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
294 as well. (reported by Josh Elsasser)
295 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
296 leading to possible attempts to delete the same file twice. See docstring
297 on DELETE-FILE for details. (reported by John Fremlin)
298 * bug fix: DELETE-FILE once again deletes the file named by the pathname
299 designator argument, rather than its truename. (reported by Luis
301 * bug fix: the low-level debugger had 32-bit assumptions and was missing
302 information about some array types. (thanks to Luis Oliveira)
303 * bug fix: moderately complex combinations of inline expansions could
304 be miscompiled if the result was declared to be dynamic extent.
305 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
306 form (+ <variable> <integer>) were miscompiled under certain
308 * bug fix: in some cases no compiler note about failure to stack allocate
309 was emitted, even if the objects were in fact heap allocated.
310 * bug fix: minor violation of "otherwise inaccessible" rule for stack
311 allocation could cause objects users might reasonably expect to
312 be heap allocated to be stack allocated.
313 * bug fix: DESCRIBE signalled an error for generic functions under
314 certain circumstances. (thanks to Leslie Polzer)
315 * bug fix: Fixed spelling of an error message.
317 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
318 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
319 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
320 of SB-THREAD:THREAD-ERROR-THREAD.
321 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
322 * new feature: docstrings for local and anonymous functions are no longer
323 discarded. (thanks to Leslie Polzer)
324 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
325 values in other threads.
326 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
327 about object allocation.
328 * optimization: division of a real float by a complex float is implemented
329 with a specialised code sequence.
330 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
331 keywords is an order of magnitude faster.
332 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
333 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
334 methods, and similarly for non-standard metaclass classes as long as there
335 are no methods additional on MAKE-INSTANCE.
336 * optimization: more efficient type-checks for FIXNUMs when the value
337 is known to be a signed word on x86 and x86-64.
338 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
339 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
341 * optimization: compiler is smarter about delegating argument type checks to
343 * optimization: several character functions are now compiled somewhat more
344 efficiently. (reported by Lynn Quam)
345 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
346 * improvement: less unsafe constant folding in floating point arithmetic,
347 especially for mixed complex/real -float operations.
348 * optimization: constant double and single floats are stored in native
349 unboxed format on x86[-64].
350 * optimization: smarter code for arithmetic operations with constant floats,
351 complex floats, or integers on x86[-64].
352 * optimization: smarter code for conjugate/multiplication of float complexes
353 and abs/negate of floats on x86-64.
354 * optimization: more efficient complex float and real float operations on
356 * improvement: complex float division is slightly more stable.
357 * improvement: DESCRIBE output has been reworked to be easier to read and
358 contains more pertinent information.
359 * improvement: failure to provide requested stack allocation compiler notes
360 provided in all cases (requested stack allocation not happening without a
361 note being issued is now considered a bug.)
362 * bug fix: SB-POSIX exports the documented types and functions
363 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
364 types. (reported by "abhi")
365 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
366 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
367 (thanks to Paul Khuong)
368 * bug fix: looping around HANDLER-CASE could silently consume stack space
369 on each iteration. (reported by "foobar")
370 * bug fix: better error signalling when calls to functions seeking elements
371 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
372 (reported by Tobias Rittweiler)
373 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
374 directory components now works as it used to. (various prolems reported by
375 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
376 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
377 (reported by Elliot Slaughter, thanks to Stas Boukarev)
378 * bug fix: bogus undefined variable warnings from fopcompiled references to
379 global variables. (thanks to Lars Rune Nøstdal)
380 * bug fix: foreign function names should now appear in backtraces on
381 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
382 * bug fix: SETF compiler macro documentation strings are not discarded
384 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
385 (thanks to Alex Plotnick)
386 * bug fix: SLEEP accepts large integer arguments, truncating them to
387 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
388 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
389 * bug fix: compiler notes for expensive slot type checks could be emitted
390 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
392 changes in sbcl-1.0.29 relative to 1.0.28:
393 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
394 https://bugs.launchpad.net/sbcl
395 Bugs can be reported directly there, or by sending email to
396 sbcl-bugs@lists.sourceforge.net
397 (no subscription required.)
398 * minor incompatible change: under weak type checking policy integer
399 types are weakened less aggressively.
400 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
401 allowed to return, which causes SBCL to quit with exit status 0. Previously
402 if the function returned with a small integer return value, that value
403 was accidentally reused as the exit status.
404 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
405 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
406 :HASH-FUNCTION argument. Refer to user manual for details.
407 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
409 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
410 microseconds since the Unix epoch on all platforms.
411 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
412 allows the compiler to safely elide boundedness checks for special
414 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
415 the symbol, prohibits both lexical and dynamic binding. This is mainly an
416 efficiency measure for threaded platforms, but also valueable in
418 * new feature: UNC pathnames are now understood by the system on Windows.
419 * optimization: the compiler uses a specialized version of FILL when the
420 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
422 * optimization: accesses to potentially non-simple arrays where element type
423 is known are 50% faster.
424 * optimization: compiler now generates faster array typechecking code.
425 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
427 * optimization: multidimensional array accesses in the absence of type
428 information regarding array rank are approximately 10% faster due to
429 open coding of ARRAY-RANK.
430 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
431 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
433 * optimization: result of call to VECTOR can now be stack allocated.
434 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
435 as long as the resulting array is one-dimensional and has a known
436 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
437 length of the list matches the known length of the vector does not
438 allocate the list as an intermediate step. Ditto for VECTOR and simple
440 * optimization: MAKE-ARRAY can now stack allocate in the presence of
441 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
442 known element type, and is known to be simple and one dimensional.
443 * improvement: SBCL now emits a compiler note where stack allocation was
444 requested but could not be provided (not in all cases, unfortunately)
445 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
446 * improvement: pretty-printing loop has been implemented properly. (thanks
447 to Tobias Rittweiler)
448 * documentation: CLOS slot typechecing policy has been documented.
449 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
450 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
451 pointer, leading to memory faults. (thanks to Bart Botta)
452 * bug fix: better floating point exception handling on x86/OpenBSD.
453 (thanks to Josh Elsasser)
454 * bug fix: exit status from QUIT when called under --script was lost
455 (reported by Hubert Kauker)
456 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
457 same implementation of FILL to initialize the array, even if a more
458 efficient one was available (reported by Stas Boukarev, thanks to
460 * bug fix: potential miscompilation of array stack allocation on x86 and
461 x86-64. (reported by Time Tossavainen)
462 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
463 result in their subforms being treated as top level forms. (reported by
465 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
466 than a machine register could leave garbage in the high bits of the
467 result register (bug 316325).
468 * bug fix: disable address space randomization Linux/x86-64 as well,
469 not just x86-64. (reported by Ken Olum)
470 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
471 generate incorrect code.
472 * bug fix: #201; type inference for CONS and ARRAY types could derive
473 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
474 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
475 could not be assigned to or bound with PROGV. (reported by Lorenz
477 * bug fix: the value of CL:- in the inspector was the previous expression
478 evaluated rather than the expression being evaluated.
479 * bug fix: constants can no longer be locally declared special.
480 * bug fix: signals delivered to threads started from foreign land (read:
481 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
482 thread by blocking all signals and resignalling.
483 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
484 from :INITFORM, if any.
486 changes in sbcl-1.0.28 relative to 1.0.27:
487 * a number of bugs in cross-compilation have been fixed, with the ultimate
488 result that building under (at least) clisp should be much more reliable.
489 * minor incompatible changes: echo-streams now propagate unread-char to the
490 underlying input stream, and no longer permit unreading more than one
492 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
493 frames, allowing for instance more reliable backtraces.
494 * improvement: the debugger REPL can now reference lexical variables
495 by name directly for code compiled with (DEBUG 3).
496 * improvement: errors from malformed declarations now have better source
497 paths associated with them. (thanks to Tobias Rittweiler)
498 * optimization: faster local calls on x86/x86-64
499 * bug fix: some error messages for out-of-bound array indexes confused the
500 index and the bound. (thanks to Stas Boukarev)
501 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
503 * bug fix: running regressions tests in shells without OSTYPE set now works.
504 (reported by Harald Hanche-Olsen)
505 * bug fix: more robust static space exhaustion signalling from
506 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
507 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
508 docstring away instead of storing it under names such as (LAMBDA (X)).
509 (reported by Leslie Polzer)
510 * bug fix: timers could go off in the wrong order, be delayed indefinitely
511 (thanks to Ole Arndt for the patch)
512 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
513 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
514 potentially-invalid effective methods in its cache.
515 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
516 instances as well (thanks to Paul Khuong)
517 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
518 SB-POSIX:WAITPID and their C equivalents.
519 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
521 changes in sbcl-1.0.27 relative to 1.0.26:
522 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
523 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
524 * improvement: the system either recovers from stack exhaustion or dies
525 properly as opposed to leaving the user uncertain of whether the handler
526 trampled on some random memory next to the stack or having to rely on
527 --lose-on-corruption (which is still a good idea to use in production
528 because stack exhaustion can happen in signal handlers which will likely
530 * bug fix: fix gc related interrupt handling bug on ppc (regression from
531 1.0.25.37, reported by Harald Hanche-Olsen)
532 * bug fix: work around signal delivery bug in darwin (regression from
533 1.0.25.44, reported by Sidney Markowitz)
534 * bug fix: fix ERROR leaking memory (reported by David Thompson)
536 changes in sbcl-1.0.26 relative to 1.0.25:
537 * incompatible change: an interruption (be it a function passed to
538 INTERRUPT-THREAD or a timer function) runs in an environment where
539 interrupts can be enabled. The interruption can use
540 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
541 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
542 potentially running out of stack. Keep in mind that in the absence
543 of WITHOUT-INTERRUPTS some potentially blocking operation such as
544 acquiring a lock can enable interrupts.
545 * incompatible change: GC-OFF and GC-ON are removed, as they were
546 always unsafe. Use WITHOUT-GCING instead.
547 * new feature: runtime option --disable-ldb
548 * new feature: runtime option --lose-on-corruption to die at the
549 slightest hint of possibly non-recoverable errors: running out of
550 memory, stack, alien stack, binding stack, encountering a memory
551 fault, etc. In the absence of --lose-on-corruption a warning is
553 * enhancement: detect binding stack exhaustion
554 * enhancement: detect alien stack exhaustion on x86/x86-64
555 * improvement: generally more stable and reliable interrupt handling
556 * improvement: there is a per thread interruption queue,
557 interruptions are executed in order of arrival
558 * improvement: a repeating timer reschedules itself when the it has
559 finished, but expiration times are spaced equally. If an
560 expiration time is in the past it will trigger after a short grace
561 period that may give a chance to other things to run.
562 * optimization: slightly faster gc on multithreaded builds
563 * optimization: faster WITHOUT-GCING
564 * bug fix: when JOIN-THREAD signals an error, do it when not holding
565 important locks so that the debugger/handler doesn't produce
566 recursive errors or deadlock.
567 * bug fix: real-time signals are not used anymore, so no more
568 hanging when the system wide real-time signal queue gets full.
569 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
571 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
572 * bug fix: fix random memory faults related to interrupts on alpha
573 * bug fix: fix random memory faults related to interrupts on sparc
574 * bug fix: fix deadlocks related to starting threads
575 * bug fix: fix deadlines on locks on futex platforms
576 * bug fix: restore errno in signal handlers
577 * bug fix: fix deadlocks related to hash tables
578 * bug fix: fix deadlocks in pcl
580 changes in sbcl-1.0.25 relative to 1.0.24:
581 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
582 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
583 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
584 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
585 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
586 better name and does not return values so stale on multiprocessor systems.
587 Also, HOLDING-MUTEX-P was added for about the only sane usage of
589 * improvement: unithread builds keep track of MUTEX-VALUE.
590 * improvement: reading from a TWO-WAY-STREAM does not touch the output
591 stream anymore making it thread safe to have a concurrent reader and
592 a writer, for instance, in a pipe.
593 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
594 arguments, making compiler-macros for SETF-functions able to inspect
595 their constant arguments.
596 * improvement: COMPILE-FILE reports times with millisecond accuracy
597 (thanks to Luis Oliveira)
598 * optimization: CHAR-CODE type derivation has been improved, making
599 TYPEP elimination on subtypes of CHARACTER work better. (reported
600 by Tobias Rittweiler, patch by Paul Khuong)
601 * bug fix: setting alien structure fields of type struct by value now
602 computes the right offset for the memory copy.
603 * bug fix: compilation problem involving inlined calls to aliens with
604 result type VOID. (reported by Ken Olum)
605 * bug fix: #235a; sequential inline expasion in different policies no
606 longer reuses the functional from the previous expansion site.
607 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
608 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
609 * bug fix: named ENUMs in multiply-referenced alien record types no longer
610 cause an implied type redefinition. Regression from 1.0.21.29.
611 * bug fix: sign-extension of small signed return values now works with C
612 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
613 * improvements to the Windows port:
614 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
615 Westfold, thanks to Rudi Schlatte)
617 changes in sbcl-1.0.24 relative to 1.0.23:
618 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
619 vector of a multidimensional SIMPLE-ARRAY.
620 * new feature: the system now signals a continuable error if standard
621 readtable modification is attempted. (thanks to Tobias Rittweiler)
622 * new feature: DIRECTORY has been extended with a non-standard keyword
623 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
624 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
625 has been robustified and documented better. (thanks to Robert Goldman)
626 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
627 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
628 * tradeoff: constant FORMAT control strings are now compiled unless
629 SPACE > SPEED (previously only when SPEED > SPACE.)
630 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
632 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
634 * bug fix: lexical type declarations are now correctly reported by
635 SB-CLTL2. (reported by Larry D'Anna)
636 * bug fix: STRING-TO-OCTETS did not handle :START properly when
637 using UTF-8 as external format. (thanks to Luis Oliveira)
638 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
639 are signalled correctly. (thanks to Stas Boukarev)
640 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
641 designator. (thanks to Tobias Rittweiler)
642 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
643 designator, and returns T instead of the function. (thanks to
645 * bug fix: direct superclasses of STANDARD-CLASS and
646 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
647 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
648 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
649 when no class with the named slot yet exists no longer causes a
650 compile-time style-warning.
651 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
652 in safe code. (reported by Didier Verna)
653 * bug fix: #430; nested structure constructors can stack allocate.
654 * bug fix: on some 64-bit platforms dynamic space size was truncated
655 to #xffff0000 bytes. (reported by Benjamin Lambert)
656 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
657 REPL unusable. (reported by Daniel Herring)
658 * bug fix: return values of READ-SEQUENCE did not take :START into
659 account on file streams, regressions since 1.0.12.22. (reported by
660 Thomas Russ, patch by Paul Khuong)
661 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
662 method specializer used to confuse permuation vector optimization.
663 * bug fix: system inserted bogus implicit type declarations for local
664 special variables in DEFMETHOD bodies.
665 * bug fix: #354; duplicated frames in backtraces due to
666 non-tail-call-optimized XEPs to functions with return type NIL
668 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
669 initializes structure object slots according to DEFSTRUCT initforms,
670 and DEFSTRUCT forms :INCLUDEind structure classes defined using
671 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
672 (reported by Bruno Haible and Stephen Wilson)
673 * bug fix: #395; fill-pointer output streams used now support
674 element-type BASE-CHAR as well.
675 * bug fix: compiler error when attempting to derive return value of
676 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
678 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
680 * bug fix: Mac OS X binaries should now be portable between Leopard
683 changes in sbcl-1.0.23 relative to 1.0.22:
684 * enhancement: when disassembling method functions, disassembly
685 for the associated fast function is also produced.
686 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
688 * optimization: printing with *PRINT-PRETTY* true is now more
689 efficient as long as the object being printed doesn't require
690 special handling by the pretty printer.
691 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
692 now interact correctly with type declarations.
693 * partial bug fix: PCL detects infinite recursion during wrapper
694 validation. (thanks to Attila Lendvai)
695 * bug fix: #426; nested function calls are inlined properly.
696 Previously if FOO was an inline function, in calls of the form
697 (FOO (FOO ...)) the outer call was not inlined.
698 * bug fix: long long arguments passed in registers to alien
699 functions on PowerPC Linux and NetBSD are now handled correctly
700 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
702 changes in sbcl-1.0.22 relative to 1.0.21:
703 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
704 for the shared object in the current directory, but passes the native
705 namestring of the designated pathname to the operation system's shared
706 object loading function as-it.
707 * minor incompatible change: --disable-debugger toplevel option now takes
708 effect before processing of initialization files and --eval or --load
710 * new feature: new commandline argument: --script, which supports
711 shebang lines. See documentation for details. (based on work by
713 * new feature: SAVE-LISP-AND-DIE can save current values of
714 --dynamic-space-size and --control-stack-size in the executable core,
715 causing it to skip normal runtime option processing. See documentation
716 for details. (thanks to Zach Beane)
717 * enhancement: inoccous calls to EVAL or generic functions dispatching
718 on subclasses of eg. STREAM no longer cause compiler notes to appear.
719 * enhancement: the system no longer resignals errors from --load and
720 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
721 associated with the original error to be lost. (thanks to Ariel
723 * enhancement: :DONT-SAVE keyword argument has been added to
724 LOAD-SHARED-OBJECT for controlling interaction with
725 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
726 the effects of an earlier LOAD-SHARED-OBJECT call.
727 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
728 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
729 provided. (reported by Cedric St-Jean)
730 * bug fix: circularity handling in the reader did not treat raw
731 structure slots correctly. (reported by Cedric St-Jean)
732 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
733 file descriptors when there were none.
734 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
735 was broken. (reporteed by Willem Broekema)
736 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
737 pathnames without a directory.
738 * bug fix: COMPILE-FILE did not warn about undefined variable
739 references at toplevel, and LOAD of the resulting fasl did
741 * bug fix: functions with non-required arguments used to end up with
742 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
743 * bug fix: redefining a function with non-required arguments didn't
744 update the system's knowledge about its call signature properly.
745 * bug fix: fixed #431; incompatible alien record type redefinitions
746 are detected and handled. (reported by Neil Haven)
747 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
748 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
750 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
751 after alien stack frames.
752 * bug fix: strings passed to mk{s,d}temp lacked null termination
754 changes in sbcl-1.0.21 relative to 1.0.20:
755 * new feature: the compiler is able to track the effective type of a
756 generic function across method addition and removal.
757 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
758 appropriately typed structure slots without locking.
759 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
760 information like those gathered by TIME using a programming-friendly
762 * new feature: TIME reports time taken even if the form performs a
763 non-local transfer of control.
764 * enhancement: reduced conservativism on GENCGC platforms: on
765 average 45% less pages pinned (measured from SBCL self build).
766 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
767 mutate constant symbols or violate declaimed type of the symbol.
768 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
769 sleeping on the semaphore in heavily contested semaphores.
770 * bug fix: semaphores and condition variables were not interrupt
772 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
773 owned by other threads anymore.
774 * bug fix: FIND on lists called KEY outside the specified
775 subsequence. (reported by budden)
776 * bug fix: LOG doesn't use single-float intermediate results when
777 given mixed integer and double-float arguments, leading to better
778 precision. (reported by Bob Felts)
779 * bug fix: LOG with base zero returned values of inconsistent type.
781 changes in sbcl-1.0.20 relative to 1.0.19:
782 * minor incompatible change: OPTIMIZE qualities
783 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
784 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
785 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
786 * documentation: some slot access efficiency guidelines have been
787 added to the user manual.
788 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
789 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
790 as ASSOC and MEMEBER.
791 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
792 to more efficient EQ-comparison versions more often.
793 * optimization: enhanced derivation of DOLIST iteration variable type
795 * optimization: constant folding of simple (LIST ...) forms as DOLIST
797 * optimization: runtime lookup of function definitions can be
798 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
799 * optimization: compiler is able to derive the return type of
800 (AREF (THE STRING X) Y) as being CHARACTER.
801 * optimization: CLRHASH on empty hash-tables no longer does pointless
802 work. (thanks to Alec Berryman)
803 * optimization: REPLACE deftransforms don't punt when :START1 or
805 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
806 no longer emits a code deletion note. (reported by Andrew
808 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
809 functions with an odd number of &OPTIONAL arguments, a &REST
810 argument, and one or more &KEY arguments at the call site.
811 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
812 arguments appeared at call sites as well.
813 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
814 READ-LINE &co can no longer read from them afterwards. (reported
816 * bug fix: fixed #427: unused local aliens no longer cause compiler
817 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
819 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
820 alien-stack leakage. (reported by Andy Hefner)
821 * bug fix: PROGV signals an error when an attempt to violate declared
822 type of a variable or bind a constant is made.
823 * bug fix: SET signals an error when an attempt to violate declared
824 type of a variable is made.
825 * bug fix: restart computation during the execution of a restart
826 test function no longer causes infinite recursion. (reported by
828 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
829 signals an error. (thanks to Pierre Mai)
830 * bug fix: EXPORT left symbol unexported in conflict situations.
831 (thanks to Michael Weber)
832 * bug fix: correctly handle name conflicts involving CL:NIL.
833 (thanks to Michael Weber)
834 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
835 conflicts arising from USEing package with conflicting symbols
836 correctly. (thanks to Michael Weber)
838 changes in sbcl-1.0.19 relative to 1.0.18:
839 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
840 warnings that go otherwise unhandled will be muffled if they are
841 of the type that's the value of this variable.
842 * optimization: stack allocation is slightly more efficient on x86
844 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
845 where a raw slot always is initialized using the initform whose
846 type is not know sufficiently well a compile-time are now compiled
847 correctly. (reported by John Morrison)
848 * bug fix: compiler no longer makes erronous assumptions in the
849 presence of non-foldable SATISFIES types.
850 * bug fix: stack analysis missed cleanups of dynamic-extent
851 arguments in non-let-converted calls to local functions.
852 * improvements to the Windows port:
853 ** adjusted address spaces for building on both Win32 and
854 Win64. (thanks for John Connors)
855 * fixed some bugs revealed by Paul Dietz' test suite:
856 ** interval arithmetic during type derivation used inexact integer
857 to single-float coercions.
858 ** arithmetic operations involving large integers and single
859 floats give the same results in compiled and interpreted code.
860 ** deriving the result type of COERCE no longer signals an error
861 if the derived type of the second argument is a MEMBER type
862 containing invalid type specifiers.
863 ** ADJOIN with constant NIL as second argument works correctly.
864 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
866 changes in sbcl-1.0.18 relative to 1.0.17:
867 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
868 profiles only the current thread.
869 * minor incompatible change: changes to SYMBOL-VALUE of constants
870 defined with DEFCONSTANT now signal an error.
871 * enhancement: SB-SPROF now has support for wallclock profiling,
872 and is also able to profile specific threads. REPORT output
873 has also additional sorting options.
874 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
876 * optimization: structure allocation has been improved
877 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
878 ** out of line constructors are ~10% faster.
879 ** inline constructors are ~15% faster.
880 ** inline constructors are capable of dynamic extent allocation
881 (generally on x86 and x86-64, in some cases on other platforms
883 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
885 * optimization: file compiler is now able to coalesce non-circular
886 lists, non-base strings, and bit-vectors. Additionally, constants
887 are never referenced through SYMBOL-VALUE at runtime.
888 * optimization: code defining methods on PRINT-OBJECT (and other
889 generic functions in the COMMON-LISP package) now loads faster.
890 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
892 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
893 fasl is now deleted. (reported by Attila Lendvai)
894 * bug fix: READ-LINE always returned NIL for the last line in files.
895 (reported by Yoshinori Tahara)
896 * bug fix: more accurate disassembly annotations of foreign function
897 calls. (thanks to Andy Hefner)
898 * bug fix: trimming non-simple strings and non-string string
899 designators when the there is nothing to trim works properly.
900 (thanks to James Knight)
901 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
902 (thanks to Travis Cross)
903 * fixed some bugs revealed by Paul Dietz' test suite:
904 ** NIL is a valid function name (regression at 1.0.13.38)
905 ** FILL on lists was missing its return value (regression at 1.0.12.27)
906 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
907 fill pointers properly (regression at 1.0.12.23)
908 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
909 displacement indices properly (regression at 1.0.12.23)
911 changes in sbcl-1.0.17 relative to 1.0.16:
912 * temporary regression: user code can no longer allocate closure
913 variable storage on stack, due to bug 419 without explicitly
914 requesting it. Please consult sbcl-devel for advice if you need to
915 use this feature in the meanwhile.
916 * new feature: runtime argument --control-stack-size can be used to
917 adjust thread default control stack size.
918 * enhancement: improved TIME output
919 ** all times are reported using the measured accuracy (milliseconds
920 for real and GC times, microseconds for everything else.)
921 ** processor cycle counts on x86 and x86-64.
922 ** interpreted forms are counted for both evaluator modes.
923 ** number of lambdas converted by the compiler is reported.
924 ** CPU percentage report (computed from real and total run time.)
925 ** more comprehensive run time reporting, using a condenced format
926 ** interperted form, lambda, and page fault counts are omitted
928 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
930 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
931 * optimization: two argument forms of LAST are upto ~10% faster
932 in normal SPEED policies.
933 * optimization: NCONC no longer needs to heap cons its &REST list
934 in normal SPEED policies.
935 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
937 * bug fix: UNION and NUNION work with :TEST-NOT once more,
938 regression since 1.0.9.1. (thanks to Eric Marsden)
939 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
940 since 1.0.15.36. (thanks to Paul Khuong)
941 * bug fix: LAST when always returned the whole list when given a bignum
942 as the second argument.
943 * bug fix: dynamic extent allocation of nested lists and vectors
944 could leak to otherwise accessible parts.
945 * bug fix: invalid optimization of heap-allocated alien variable
947 * bug fix: fasl header checking is less vulnerable to different
948 platform word lengths.
949 * bug fix: more correct assembler syntax for GNU binutils
950 2.18.50.0.4 support. (thanks to Marijn Schouten)
951 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
953 * bug fix: the fopcompiler can handle LOCALLY forms (with no
954 declarations) successfully. (reported by Attila Lendvai)
956 changes in sbcl-1.0.16 relative to 1.0.15:
957 * minor incompatible change: revert the changes to sb-posix's error
958 signaling added in 1.0.14.
959 * minor incompatible change: change PROBE-FILE back to returning
960 NIL whenever we can't get a truename, as was the case before 1.0.14.
961 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
962 inherits from ERROR instead of just CONDITION.
963 * new feature: SB-INTROSPECT can provide source locations for instances
964 as well. (thanks to Tobias Rittweiler)
965 * optimization: binding special variables now generates smaller code
966 on threaded platforms.
967 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
968 and cases where no :TEST is given but the compiler can infer that
969 the element to search is of type (OR FIXNUM (NOT NUMBER)).
970 * optimization: better LOGNOT on fixnums.
971 * optimization: modular arithmetic for a particular requested width
972 is implemented using a tagged representation unless a better
973 representation is available.
974 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
975 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
976 for wellformedness and returns a specialized vector. (reported by
977 Francois-Rene Rideau)
978 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
979 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
980 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
981 unscheduling timer at the same time as another timer fires.
982 * bug fix: don't reschedule timers for dead threads.
983 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
984 * bug fix: copying output from RUN-PROGRAM to a stream signalled
985 bogus errors if select() was interrupted.
986 * enhancement: add support for fcntl's struct flock to SB-POSIX.
988 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
989 * enhancement: cleaner backtraces for interactive interrupts, as
990 well as other cases where the interesting frames used to be
991 obscured by interrupt handling frames.
992 * enhancement: untracing a whole package using (UNTRACE "FOO") is
993 now supported, and tracing a whole package using (TRACE "FOO") now
994 traces SETF-functions as well.
995 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
996 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
997 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
998 * unreadably printed representation of hash-tables now includes
1000 * bug fix: partially fixed #188: type propagation from assignments
1001 is now more efficient.
1002 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1003 'DOUBLE-FLOAT) are not flushable.
1004 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1005 full address of the object, and none of the tag bits.
1006 * bug fix: readably printing hash-tables now respects other printer
1007 control variables. (reported by Cedric St-Jean)
1008 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1009 keyword with MAKE-HASH-TABLE.
1010 * bug fix: export SB-POSIX:MKSTEMP.
1011 * bug fix: SORT was not interrupt safe.
1012 * bug fix: XREF accounts for the last node of each basic-block as
1014 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1015 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1016 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1017 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1018 create obsolete instances in the case of redefinition or
1019 obsoletion of a superclass. (thanks to Andy Hefner)
1020 * bug fix: Support for the Alpha architecture has been revived; it had
1021 suffered somewhat from lack of maintenance since sbcl-1.0.
1022 * improvements to the Windows port:
1023 ** The system detects the codepage to use at startup, instead of
1024 using the value from the saved core. (thanks to Kei Suzuki)
1026 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1027 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1028 (see documentation for details.)
1029 * revived support for OpenBSD (contributed by Josh Elsasser)
1030 * partially fixed bug #108: ROOM no longer suffers from occasional
1031 (AVER (SAP= CURRENT END)) failures.
1032 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1033 bodies no longer cause a WARNING to be signalled. (reported by
1035 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1036 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1037 the bug in TRUNCATE.) (reported by Michael Weber)
1038 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1039 no samples. (reported by Andy Hefner)
1040 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1041 no longer appear as (NIL ...) frames in backtraces.
1042 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1043 is now actually exported from SB-EXT as documented. (reported by
1045 * bug fix: sb-aclrepl now correctly understands how to inspect
1046 single-floats on 64-bit platforms where single-floats are not boxed.
1047 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1048 yet been finalized. (reported by Levente Meszaros)
1049 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1050 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1051 SBCL-specific optimize qualities.
1053 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1054 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1055 an executable in the search path, and does so in the child
1056 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1057 been removed; it can be found in the CVS history, for somebody who
1058 needs that search behavior (see the manual).
1059 * minor incompatible change: compiler policy re. weakening type
1060 checks has changed: now type checks are weakened only if SAFETY < 2
1062 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1063 unparsing of directory pathnames as files. Analogously,
1064 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1065 filename to parse into a directory pathname.
1066 * enhancement: implicit generic function creation now signals a
1067 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1068 users can bind handlers for and muffle around calls to LOAD.
1069 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1070 to be used (using the default stream external format), and allows
1071 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1072 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1073 strings and vectors whose element-type or simplicity is not fully
1074 known at compile-time.
1075 * optimization: STRING-TRIM and related functions no longer allocate
1076 a new string when no trimming needs to be performed. These functions
1077 are also faster than before when the input string has been declared
1079 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1080 * optimization: READ-LINE is significantly faster for files containing
1082 * optimization: non-open coded uses of character comparison operators
1083 (e.g. char=) no longer cons when called with more than one parameter
1084 on platforms supporting dynamic-extent allocation.
1085 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1086 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1087 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1089 * bug fix: some sequence functions elided bounds checking when
1091 * bug fix: too liberal weakening of union-type checks when SPEED >
1093 * bug fix: more bogus fixnum declarations in ROOM implementation
1096 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1097 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1098 :SYNCHRONIZED argument, which makes the hash-table safe for
1099 concurrent accesses (but not iteration.) See also:
1100 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1101 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1102 * optimization: CONCATENATE on strings is an order of magnitude faster
1103 in code compiled with (> SPEED SPACE).
1104 * optimization: SUBSEQ is ~50% faster on lists.
1105 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1106 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1107 END is smaller then START.
1108 * bug fix: SB-PROFILE will no longer report extra consing for nested
1109 calls to profiled functions.
1110 * bug fix: ROOM implementation had bogus fixnum declarations which
1111 could cause type-errors when calling ROOM on large images.
1112 * bug fix: if file compilation is aborted, the partial fasl is now
1113 deleted, and COMPILE-FILE returns NIL as the primary value.
1114 * bug fix: number of thread safety issues relating to SBCL's internal
1115 hash-table usage have been fixed.
1116 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1117 be returned from its body when the values were being returned
1118 using unknown-values return convection and the W-P-O was wrapped
1119 inside an UNWIND-PROTECT.
1120 * bug fix: sb-posix should now compile again under Windows, enabling
1121 slime to work again.
1123 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1124 * incompatible change: hash-table accessor functions are no longer
1125 automatically protected by locks. Concurrent accesses on the same hash-table
1126 from multiple threads can give inconsistent results or even corrupt the
1127 hash-table completely. Multi-threaded applications should do their own
1128 locking at the correct granularity. In the current implementation it is
1129 still safe to have multiple readers access the same table, but it's not
1130 guaranteed that this property will be maintained in future releases.
1131 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1132 and will signal an error at runtime.
1133 * enhancement: SB-THREAD package now exports a semaphore interface.
1134 * enhancement: CONS can now stack-allocate on x86 and
1135 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1137 * enhancement: nested lists can now be stack allocated on
1138 platforms providing stack allocation support.
1139 * enhancement: dynamic-extent support has been extended to support
1140 cases where there are multiple possible sources for the stack
1142 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1143 if the mutex is uncontested on Linux.
1144 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1145 as specified by the CLHS. (thanks to Tobias Rittweiler)
1146 * bug fix: NaN comparison now works on x86-64.
1147 * bug fix: CLOSE :ABORT T on a stream with pending output now
1149 * bug fix: instances of non-standard metaclasses using standard
1150 instance structure protocol sometimes missed the slot type checks
1152 * bug fix: known functions can be inlined in high-debug code.
1154 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1155 * minor incompatible change: the MSI installer on Windows no longer
1156 associates .lisp and .fasl files with the installed SBCL.
1157 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1158 on Windows. (thanks to Luis Oliviera)
1159 * new feature: SB-CLTL2 contrib module now implements
1160 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1161 * optimization: scavenging weak pointers is now more efficient,
1162 requiring O(1) instead of O(N) per weak pointer to identify
1163 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1164 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1165 method bodies using constant slot-names when the first argument is
1166 a specializer parameter for the method.
1167 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1168 names, when the class of the instance is a direct instance
1169 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1170 as slow as the constant slot-name case.)
1171 * optimization: member type construction is now O(N) instead
1173 * optimization: UNION and NUNION are now O(N+M) for large
1174 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1176 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1177 now more readable in environments like Slime which display it.
1178 (thanks to Tobias C. Rittweiler)
1179 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1180 was able to infer the correct argument type for the object on which
1181 the CAS operation was being performed.
1182 * bug fix: copy propagation interfered with parallel assignment
1183 semantics in local calls. (reported by Paul Khuong)
1184 * bug fix: the signed modular fixnum shift compiled to wrong code on
1185 x86 and x86-64. (spotted by a slight modification to some of
1188 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1189 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1190 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1191 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1193 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1194 and generic function now print the object identity for anonymous
1195 instances. (thanks to Attila Lendvai)
1196 * enhancement: as an extension to MOP, SBCL now supports SETF of
1197 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1198 (thanks to Attila Lendvai)
1199 * enhancement: sb-cover has an alternate annotation mode which puts
1200 the form annotations at the car of the form, instead of annotating
1201 it completely. The benefit of this mode is that it shows better
1202 which forms were instrumented by the compiler.
1203 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1204 by printer control variables. (reported by Dan Corkill)
1205 * bug fix: system leaked memory when delayed output was performed by
1206 the OS in smaller chunks then expected. (thanks to David Smith)
1207 * bug fix: system leaked memory when file streams were not closed
1209 * bug fix: large objects written to slow streams that were modified
1210 after the write could end up with the modified state written to
1211 the underlying file descriptor.
1212 * bug fix: multiple threads operating in parallel on the same stream
1213 could cause buffer-overflows.
1214 * bug fix: source location information is stored correctly
1215 (broken since 1.0.6). This bug would generally show up as the
1216 Slime debugger highlighting the wrong form when the sldb-show-source
1218 * bug fix: Branch forms are again annotated as branches in the sb-cover
1220 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1221 on x86-64. (reported by Gregory Vanuxem)
1222 * bug fix: EQUALP could return wrong results for structures with raw
1223 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1224 word). (reported by Vjacheslav Fyodorov)
1225 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1228 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1229 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1230 atomic compare-and-swap operations on threaded platforms.
1231 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1232 allows assigning a global minimum value to optimization qualities
1233 (overriding proclamations and declarations).
1234 * enhancement: closed over variables can be stack-allocated on x86
1236 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1238 * optimization: slot definition lookup is now O(1). This speeds up
1239 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1240 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1241 * optimization: ASSOC and MEMBER can now be open-coded for all
1242 combinations of keyword arguments when second argument is constant
1243 and SPEED >= SPACE. In other cases a specialized version is
1245 * bug fix: using obsoleted structure instances with TYPEP and
1246 generic functions now signals a sensible error.
1247 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1248 (reported by Kristoffer Kvello)
1249 * bug fix: backtrace construction is now more careful when making
1250 lisp-objects from pointers on the stack, to avoid creating bogus
1251 objects that can be seen by the GC.
1252 * bug fix: defaulting of values in contexts expecting more than 7
1253 variables now works on x86-64. (reported by Christopher Laux)
1254 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1256 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1257 as the property-list of a symbol.
1258 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1259 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1260 situations requested, are once again file-compileable. (reported
1263 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1264 * MOP improvement: support for user-defined subclasses of
1265 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1266 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1267 the expansion of DEFMETHOD, is responsible for generating a form
1268 which creates a list of specializers when evaluated. Additional
1269 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1270 debugging and introspective support.
1271 * minor incompatible change: the (unsupported) spinlock interface
1272 has changed: free spinlock now has the value NIL, and a held spinlock
1273 has the owning thread as its value.
1274 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1275 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1277 * enhancement: name of a socket-stream is now "a socket" instead of
1278 "a constant string".
1279 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1280 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1281 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1282 for generic functions. (Thanks to Tobias C. Rittweiler)
1283 * optimization: bignum printing speed has been improved by 20-40%
1284 (depending on the bignum size.)
1285 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1287 * bug fix: the cache used by the CLOS to store precomputed effective
1288 methods, slot offsets, and constant return values is now thread and
1290 * bug fix: generic function dispatch function updating is now thread
1291 and interrupt safe (in the sense that the known issues have been
1293 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1294 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1295 * bug fix: asdf systems with dependencies to the SB-POSIX or
1296 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1297 * bug fix: interrupt safety of applicable method computation has been
1300 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1301 * new contrib: sb-cover, an experimental code coverage tool, is included
1302 as a contrib module.
1303 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1304 significantly faster.
1305 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1306 produce more efficient code on x86-64 if the compiler can determine
1307 that (+ INDEX <constant>) does not require a bounds check and FOO
1308 has an element type at least 8 bits wide.
1309 * enhancement: a new, experimental synchronous timeout facility is
1310 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1311 * enhancement: when a symbol name conflict error arises, the
1312 conflicting symbols are always printed with a package prefix.
1313 (thanks to Kevin Reid)
1314 * enhancement: stepping is now once again supported on the SPARC and
1315 MIPS platforms. (It is also now more likely to work on CheneyGC
1317 * enhancement: sb-sprof can now also track and report accurate call
1319 * bug fixes: the treatment of non-standard subclasses of
1320 SB-MOP:SPECIALIZER is more correct.
1321 * incompatible change: PURIFY no longer copies the data from the
1322 dynamic space into the static and read-only spaces on platforms
1323 that use the generational garbage collector
1324 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1326 * bug fix: GC race condition occasionally resulting in crashes with
1327 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1329 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1331 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1332 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1333 * bug fix: an asynchronous interrupt could previously leave the
1334 system running with GC inhibited.
1335 * bug fix: a DECLARE form evaluated at top-level now causes an error
1336 rather than silently (or verbosely) returning NIL.
1337 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1338 result in a error being signalled due to source form lookup errors.
1339 (reported by Peter Graves)
1341 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1342 * incompatible change: removed writer methods for host-ent-name,
1343 host-ent-addresses -- changing the values did not update the DNS
1345 * minor incompatible change: changed experimental JOIN-THREAD interface
1346 * documentation: the manual now lists reader and writer methods
1347 in class slot documentation sections. (thanks to Richard M Kreuter)
1348 * documentation: unwinding from asyncronous events has been
1349 documented as unsafe.
1350 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1351 in multithreaded application code.
1352 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1353 platforms. (thanks to James Anderson for the optimization hint)
1354 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1356 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1357 variants no longer cons.
1358 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1359 their NOT- variants no longer cons.
1360 * optimization: EQUAL hash tables no longer use SXHASH for objects
1361 of all data types, but instead use an EQL hash for types for which
1362 EQUAL is the same as EQL.
1363 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1364 are significantly faster.
1365 * optimization: new STRING-OUTPUT-STREAM implementation is much
1366 faster for large outputs and conses 30% less on average.
1367 * enhancement: XREF information is now collected for references made
1368 to global variables using SYMBOL-VALUE and a constant argument.
1369 * enhancement: SIGINT now causes a specific condition
1370 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1371 * bug fix: FILE-POSITION used to signal an error in some cases where
1372 ANSI requires it to return NIL.
1373 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1374 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1375 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1377 * bug fix: bad type declaration in the CLOS implementation has
1378 been fixed. (reported by James Anderson)
1379 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1380 (thanks to Lutz Euler)
1381 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1382 required by the CLHS. (reported by Samium Gromoff)
1383 * bug fix: dead unbound variable references now signal an error.
1384 (reported by Marco Monteiro)
1385 * bug fix: / with an unused value was being deleted in safe code.
1386 (thanks to Marco Monteiro and Kevin Reid)
1387 * bug fix: number of characters that can be written onto a single
1388 line in a file is unlimited.
1389 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1390 been fixed by inhibiting interrupts for when GC is disabled.
1391 * bug fix: some interrupt safety issues with GETHASH, (SETF
1392 GETHASH), CLRHASH and REMHASH have been fixed.
1393 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1394 specifier no longer causes infinite recursion.
1395 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1396 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1397 * bug fix: an &environment argument with the correct variable information
1398 is passed to macros that are expanded during byte compilation.
1399 (reported by Samium Gromoff)
1400 * bug fix: a logic error was causing the hash function for bignums to
1401 have excessive amounts of collisions. (reported by Faré Rideau)
1402 * bug fix: modifying the contents of an array could change the return
1403 value of SXHASH on that array, which is only allowed for strings
1404 and bit vectors. (bug introduced in 0.9.16)
1405 * improvement: the x86-64/darwin port now passes all tests (except
1406 for the debugger tests) but should still be considered
1407 experimental until this is fixed.
1408 * improvement: a style-warning is signaled for CASE (etc) clauses with
1409 duplicate keys. (thanks to Kevin Reid)
1410 * improvement: macos/x86 and macos/x86-64 now use mach exception
1411 handlers for dealing with illegal instructions (for trapping and
1412 error handling) and memory protection violations (for GC).
1414 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1415 * new platform: experimental support for x86-64/darwin (MacOS).
1416 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1417 and getnameinfo sockets functions are used instead of gethostbyaddr
1418 and gethostbyname, on platforms where the newer functions are available.
1419 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1421 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1422 don't print the startup banner, but behave as if --noinform was passed
1423 as a command line argument. (thanks to Kevin Reid)
1424 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1425 * optimization: code using alien values with undeclared types is much faster.
1426 * optimization: the compiler is now able to open code SEARCH in more cases.
1427 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1428 * bug fix: using standardized COMMON-LISP special variables as loop
1429 variables no longer signals bogus package lock violations. (reported
1431 * bug fix: declaring local loop variables to be of a range-limited type
1432 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1433 (reported by Andras Simon)
1434 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1435 bugs remain on x86-64.)
1436 * bug fix: the #= and ## reader macros now interact reasonably with
1437 funcallable instances.
1438 * bug fix: type-checks for function arguments were compiled using the
1439 compiler policy settings of the wrong lexical environment (in 1.0.2
1441 * bug fix: SHADOW accepts characters as string designators, as required
1442 by the spec (thanks to Eric Marsden)
1443 * bug fix: fixed GC safety issues when foreign functions are called with
1444 non-base strings as arguments
1445 * bug fix: more consistent error output for fatal-compiler-warnings, like
1447 * bug fix: functions with proper names were showing up as NIL in
1448 backtraces (reported by Edi Weitz, regression in 1.0.2)
1450 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1451 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1452 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1453 produce more efficient code on the x86 if the compiler can determine
1454 that (+ INDEX <constant>) does not require a bounds check and FOO
1455 has an element type at least 8 bits wide.
1456 * bug fix: references to undefined variables are handled the same way
1457 in toplevel forms as in the normal compiler
1458 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1460 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1461 (thanks to Jon Buller)
1462 * improvement: faster compilation times for complex functions
1463 * improvement: added readlink support to SB-POSIX (thanks to Richard
1466 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1467 * improvement: experimental support for mach exception handling on
1468 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1470 * improvement: support for GBK external format.
1471 (thanks to Chun Tian (binghe))
1472 * improvement: the debugger now displays variables that have been closed
1473 over, in code compiled with (DEBUG 2) or higher
1474 * improvement: support for executable cores on NetBSD (thanks to
1476 * new feature: added a RESTART-FRAME debugger command
1477 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1478 be used to provide an implementation for FILE-POSITION on Gray streams
1479 (thanks to Eric Marsden)
1480 * new feature: add syslog, openlog and closelog support to SB-POSIX
1481 (thanks to Richard Kreuter)
1482 * optimization: the function call overhead in code compiled with
1483 a high DEBUG optimization setting is significantly
1484 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1485 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1486 (thanks to Tony Martinez)
1487 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1488 evaluated once (reported by Kevin Reid)
1489 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1490 works again (thanks to Kilian Sprotte)
1491 * bug fix: an error is signaled for tagbodies with duplicate tags
1492 (thanks to Stephen Wilson)
1493 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1494 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1495 stack frames from alien callbacks.
1496 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1497 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1498 65k pages (thanks to David Woodhouse)
1499 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1501 changes in sbcl-1.0.1 relative to sbcl-1.0:
1502 * new platform: FreeBSD/x86-64, including support for threading.
1503 * new feature: the compiler stores cross-referencing information
1504 about function calls (who-calls), macroexpansion (who-macroexpands)
1505 and special variables (who-binds, who-sets, who-references) for code
1506 compiled with (< SPACE 3). This information is available through the
1507 sb-introspect contrib.
1508 * new feature: users may subclass SEQUENCE, and have instances of
1509 these classes interoperate with standard Common Lisp functions if
1510 a number of methods are defined. (This feature is experimental
1511 and the interface subject to change based on feedback from SBCL
1512 users and the general community)
1513 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1514 x86/x86-64, rather than the previous fixed depth of 8
1515 * improvement: another pthread back-end of mutex "pthread-futex".
1516 * bug fix: non-ascii command-line arguments are processed correctly
1517 (thanks to Yaroslav Kavenchuk)
1518 * bug fix: non-required arguments were not passed correctly when a method
1519 defined using DEFMETHOD was called from a mop-generated method using
1520 CALL-NEXT-METHOD (reported by Pascal Costanza)
1521 * bug fix: recursion is now permitted in accessors through
1522 SLOT-UNBOUND. (reported by Pascal Costanza)
1523 * bug fix: an error was signaled at startup if the HOME environment
1524 variable was defined, but had an empty value (reported by Peter Van Eynde)
1525 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1526 signal a PROGRAM-ERROR, not a BUG.
1527 * bug fix: SB-POSIX:READDIR works when built with large file support.
1528 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1530 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1531 for better automatic indentation support. (thanks to Matt Pillsbury)
1532 * optimization: loading generic functions no longer takes O(n^2) time,
1533 proportional to the amount of methods in the generic function
1534 (reported by Todd Sabin and Jeremy Brown)
1535 * optimization: the FIND and POSITION family of sequence functions
1536 are significantly faster on arrays whose element types have been
1538 * improvements to the Windows port:
1539 ** Intermittent heap corruption problems have been fixed. (thanks
1540 to Alastair Bridgewater)
1541 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1543 ** Lisp is able to unwind foreign exception frames from alien
1544 callbacks. (thanks to Alastair Bridgewater)
1546 changes in sbcl-1.0 relative to sbcl-0.9.18:
1547 * improvement: experimental support for threading on FreeBSD/x86.
1548 (thanks to NIIMI Satoshi)
1549 * improvement: runtime option --dynamic-space-size can be used
1550 to set the size of the dynamic space reserved on startup.
1551 * improvement: floating point modes in effect are now saved in
1552 core, and restored on startup.
1553 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1554 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1555 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1556 threads are not running after *SAVE-HOOKS* have run.
1557 * improvement: writes to CLOS instance slots are type-checked in code
1558 compiled with (SAFETY 3)
1559 * improvement: floating-point exception handling on FreeBSD (thanks to
1561 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1562 (thanks to Zach Beane)
1563 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1565 * improvement: added support for the Shift-JIS external format.
1566 (contributed by NIIMI Satoshi)
1567 * improvement: callbacks are supported on Linux/PPC. (thanks to
1569 * bug fix: compiler bug triggered by a (non-standard) VALUES
1570 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1571 * bug fix: file compiler no longer confuses validated and already
1572 dumped structurres. (reported by Kaersten Poeck)
1573 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1574 fill-pointer signals a type-error as required. (thanks to
1576 * bug fix: disassemly of funcallable instances works.
1577 * bug fix: single stepping on PPC.
1578 * bug fix: fix thread-safety problems in the type system (generally
1579 manifesting as nonsensical errors like "STRING is a bad type specifier
1580 for sequences" or "The value 1 is not of type FIXNUM")
1581 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1582 (reported by Josip Gracin)
1583 * bug fix: an error is signaled for attempts to displace arrays with
1584 incompatible element types (thanks to Mario Mommer)
1585 * bug fix: more correct handling of wide characters in debug info
1586 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1587 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1588 and don't cause extra consing
1589 * optimization: MAP and MAP-INTO are significantly faster on vectors
1590 whose elements types have been declared.
1591 * Improvements to SB-SPROF:
1592 ** Support for allocation profiling
1593 ** Reduced profiling overhead, especially for long profiling runs
1594 * Improvements to the Windows port:
1595 ** floating point exceptions are now reported correctly.
1596 ** stack exhaustion detection works partially.
1597 ** more accurate GET-INTERNAL-REAL-TIME.
1598 ** better RUN-PROGRAM behaviour in case of errors in the child
1600 ** PROBE-FILE now simplifies pathnames correctly.
1601 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1602 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1603 1st 1970 (although time timezone data will be unreliable).
1604 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1606 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1607 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1608 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1610 * bug fix: two potential GC deadlocks affecting threaded builds.
1611 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1612 returns T (reported by Anton Kazennikov)
1613 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1614 with non-variable places
1615 * bug fix: remove a race condition in the setting of
1616 funcallable-instance functions, this should make threaded CLOS
1617 code more stable against memory faults.
1618 * bug fix: corruption of specials when unbinding is interrupted by an
1619 asynchronous unwind (reported by Hannu Koivisto)
1620 * improvement: the debugger will now also display local variables that
1621 are only used once, for code compiled with a DEBUG optimization quality
1624 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1625 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1626 * incompatible change: External-format support for FFI calls. The
1627 SB-ALIEN:C-STRING no longer implies an ASCII
1628 external-format. Instead the string is subject to external-format
1629 conversion. Additionally return values of type SB-ALIEN:C-STRING
1630 are by default of type (SIMPLE-ARRAY CHARACTER), not
1631 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1632 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1633 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1634 * incompatible change: SB-EXT package no longer contains the
1635 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1636 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1638 * incompatible change: the single-stepper is no longer available
1639 on Alpha, Mips and Sparc platforms.
1640 * minor incompatible change: the direct superclasses of
1641 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1642 not (STANDARD-OBJECT FUNCTION). This makes the
1643 class-precedence-lists of GENERIC-FUNCTION and
1644 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1646 * minor incompatible change: the default stream external format on
1647 non-unicode SBCL is no longer detected from the locale, but is always
1649 * new feature: Add a version of evaluator that uses an interpreter instead
1650 of the compiler. EVAL still uses the compiler by default, to switch it
1651 to use the interpreter, set the value of the variable
1652 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1653 * minor incompatible change: the single-stepper REPL has been merged
1654 with the normal debugger (see the "Stepping" heading of the debugger help
1655 for more details). The debugger command STEP will no longer switch
1656 to the single-stepper REPL.
1657 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1658 for a type now works.
1659 * bug fix: loading of default sysinit file works. (thanks to Leonid
1661 * bug fix: better detection of circularities in the file-compiler.
1662 (reported by Marco Monteiro)
1663 * bug fix: the CL pathname functions now work with files that have
1664 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1665 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1666 systems with Unix98 pty semantics.
1667 * bug fix: ASDF-INSTALL will now work with bsd tar.
1668 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1670 * bug fix: timers expiring in dead threads no longer cause a
1671 type-error (reported by Paul "Nonny Mouse").
1672 * bug fix: thanks to more lightweight single-stepper instrumentation,
1673 code compiled with (DEBUG 3) will compile and execute significantly faster,
1674 and will have more accurate type-inferencing than before
1675 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1676 whose bindings are modified
1677 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1678 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1679 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1680 CL:SOFTWARE-VERSION with proper version
1682 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1683 * feature: implemented the READER-METHOD-CLASS and
1684 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1685 as specified by AMOP.
1686 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1688 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1689 (thanks to Lutz Euler)
1690 * optimization: hashing of general arrays and vectors has been
1691 improved. (reported by Any Fingerhut)
1692 * enhancement: SB-INTROSPECT is now able to find definitions of
1693 profiled functions. (thanks to Troels Henriksen)
1694 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1695 as well, allowing compiler-macros for SETF-functions to expand.
1696 * enhancement: step-instrumentation no longer wraps known
1697 single-value functions with multiple-value context, allowing
1698 better type inference.
1699 * fixed bug #337: use of MAKE-METHOD in method combination now works
1700 even in the presence of user-defined method classes. (reported by
1701 Bruno Haible and Pascal Costanza)
1702 * fixed bug #339(c): if there are applicable methods not part of any
1703 long-form method-combination group, call INVALID-METHOD-ERROR.
1704 (reported by Bruno Haible)
1705 * fixed bug #361: the :FUNCTION initarg in the protocol for
1706 initialization of methods can now be used to override
1707 internally-produced optimized functions. (reported by Bruno
1709 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1710 system-provided lambda expression no longer cause warnings about
1711 unbound #:|pv-table| symbols.
1712 * bug fix: improved the handling of type declarations and the
1713 detection of violations for keyword arguments with non-constant
1715 * bug fix: potentially erronous calls to PATHNAME and
1716 MERGE-PATHNAMES were being flushed in some cases.
1717 (reported by Richard Kreuter)
1718 * bug fix: compiled calls to TYPEP were mishandling obsolete
1719 instances. (reported by James Bielman and Attila Lendvai)
1720 * bug fix: format strings with ~> without matching ~< no longer
1721 trigger an AVER, but signal an understandable error instead.
1722 (reported by Antonio Martinez)
1723 * bug fix: specifying an output-file without a pathname-type for
1724 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1725 of input-file instead of "fasl". (reported by Robert Dodier)
1726 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1727 (reported by James Y Knight).
1728 * bug fix: compiler-macros-function did not consider the environment
1729 argument for shadowing by local functions.
1730 * bug fix: compiler-macros expansion was inhibited by local INLINE
1732 * bug fix: inline expansions of known functions were subject to
1733 step-instrumentation in high debug policies, leading to problems
1734 with type-inference.
1735 * bug fix: compiler failed to differentiate between different CONS
1736 types in some cases.
1737 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1738 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1739 * bug fix: #368: incorrect use of expressed vs. upgraded array
1741 * bug fix: #306a: more precise unions of array types.
1742 * thread-safety improvements:
1743 ** CONDITION-WAIT could return early on Linux, if the thread was
1744 interrupted and subsequently continued with SIGCONT.
1745 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1747 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1748 * added support for the ucs-2 external format. (contributed by Ivan
1750 * minor incompatible change: pretty printing of objects of type
1751 (cons symbol) is, in the default pprint-dispatch-table, now
1752 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1754 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1755 called later in a class's lifetime, possibly as late as when the
1756 first instance of the class is created. Previously,
1757 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1758 class became finalizeable.
1759 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1760 for multibyte external-format streams. (thanks to "vbzoli")
1761 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1762 with :ALLOCATION :CLASS inherited from superclasses of the
1764 * fixed bug: anonymous classes can now be created using the :NAME
1765 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1766 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1767 * fixed bug: core-files saved with :EXECUTABLE T can again be
1768 executed when SBCL_HOME isn't set. (reported by James Knight)
1769 * fixed bug: toplevel LOCALLY forms with declarations could
1770 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1771 * fixed bug: printing from several different threads using different
1772 values of *print-case* could cause invalid output, due to
1773 some internal special variables of the printer not being bound
1774 thread-locally (reported by Max Mikhanosha)
1775 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1776 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1777 (reported by Pascal Costanza)
1778 * fixed bug: FINALIZE-INHERITANCE is called from
1779 REINITIALIZE-INSTANCE on classes when the class has previously
1780 been finalized, as required by AMOP.
1781 * minor code generation optimizations:
1782 ** better register allocation in CLOS dispatching functions
1783 ** overflow detection when coercing signed bytes to fixnums on x86-64
1784 ** is now implemented with one IMUL instruction instead of three shifts
1785 ** more efficient bit-vector access on x86 and x86-64
1786 ** more efficient access to raw structure slots on x86 and x86-64
1787 * fixed some bugs revealed by Paul Dietz' test suite:
1788 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1789 return its argument.
1791 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1792 * feature: thread support on Solaris/x86, and experimental thread support
1794 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1796 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1797 default method for SLOT-UNBOUND.
1798 * minor incompatible change: prevent the user from specializing the
1799 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1800 somewhat counter to the intent of the protocol, I (CSR) think, and
1801 additionally it just doesn't work in SBCL as currently
1802 implemented, thanks to optimizations (that are always valid for
1803 the other three SLOT-VALUEish functions, but not for the setter).
1804 * minor incompatible change: the :SB-LDB feature is now enabled by
1805 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1806 the low-level debugger.
1807 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1808 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1809 down to an SB-SYS:FD-STREAM, allowing direct communication in
1810 more cases. Temporary files and pipes are still used as a fallback
1812 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1813 on the non-reentrant C functions localtime(3) and gmtime(3).
1814 * bug fix: global optimization policy was not visible in LOCALLY and
1816 * bug fix: class objects can be used as specializers in methods.
1817 (reported by Pascal Costanza)
1818 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1819 with a type error. (reported by blitz_ on #lisp)
1820 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1821 failed with a type error. (reported by Pascal Bourguignon)
1822 * bug fix: merging pathnames against defaults with :DIRECTORY
1823 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1824 (reported by James Y Knight)
1825 * bug fix: saving large (>2GB) cores on x86-64 now works
1826 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1827 constant index and a (simple-array (signed-byte 32)) array
1828 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1829 error (patch by Robert J. Macomber)
1830 * feature: TIME now displays the amount of run-time spent in GC
1831 * bug fix: The debugger now does a better job of respecting
1832 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1833 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1834 workaround for bug 403.)
1835 * bug fix: floating point exception handling now works on FreeBSD
1836 (thanks to NIIMI Satoshi)
1837 * fixed some bugs revealed by Paul Dietz' test suite:
1838 ** MISC.641: LET-conversion were not supposed to work in late
1840 * improvements to the Win32/x86 port:
1841 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1842 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1844 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1845 * new feature: source path information is generated for macro-expansion
1846 errors for use in IDE's like Slime (thanks to Helmut Eller)
1847 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1848 * bug fix: compiler does not loop forever on an invalid type in
1850 * improvement: compilation of most CLOS applications is significantly
1852 * optimization: added a limited bytecode compiler for simple toplevel
1853 forms, speeding up compilation and FASL loading
1854 * bug fix: the statistical profiler now properly distinguishes anonymous
1857 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1858 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1859 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1860 into subclasses of the finalized class. Now user calls to
1861 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1862 system return before any subclasses are finalized.
1863 * minor incompatible change: The reader no longer ignores errors
1864 regarding non-existent packages in #+ and #- feature tests.
1865 * new feature: command line options --no-sysinit, --no-userinit to
1866 inhibit loading the corresponding init files
1867 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1868 for sending data through UDP sockets (thanks to François-René Rideau)
1869 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1870 error is signalled instead (thanks to François-René Rideau)
1871 * minor incompatible change: Error signalling behaviour of lexical
1872 operations violating package locks has changed slightly. Refer to
1873 documentation on package locks for details.
1874 * enhancement: EVAL can process IF-expressions without resorting to the
1876 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1877 constant-folded properly due to missing out-of-line functions.
1878 (reported by Mika Pihlajamäki)
1879 * bug fix: LISTEN sometimes returned T even in cases where no data was
1880 immediately available from the stream
1881 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1882 were reversed. (reported by Levente Mészáros)
1883 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1884 when given a vector displaced to an adjustable array. (reported
1886 * bug fix: derivation of float boundaries from numbers outside the
1887 appropriate float range (reported by John Wiseman)
1888 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1890 * bug fix: precomputing cache entries for generic functions with
1891 some subclasses of specializers as yet invalid does not attempt to
1892 fill a cache line with a negative offset. (reported by Levente
1894 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1895 allow condition class objects as arguments to DOCUMENTATION and
1896 (SETF DOCUMENTATION); only find and set documentation for
1897 structure names for the STRUCTURE doc-type. (suggested by Gary
1899 * improvements to the Win32/x86 port:
1900 ** (user-homedir-pathname) and default initialization file
1901 locations now know about the user's "Documents and Settings"
1902 directory (thanks to Yaroslav Kavenchuk)
1903 ** run-program is implemented (thanks to Mike Thomas)
1904 ** sockets support (thanks to Timothy Ritchey)
1905 ** better backtrace support (thanks to Alastair Bridgewater)
1906 ** sb-grovel supported
1907 ** asdf-install and sb-posix work somewhat
1908 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1909 * improvements to the Solaris/x86 port:
1910 ** works on Solaris 11/Solaris Express
1911 ** floating-point exception handling support
1912 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1913 * fixed some bugs revealed by Paul Dietz' test suite:
1914 ** REMOVE-METHOD returns its generic function argument even when
1915 the method is not one of the generic functions' methods.
1916 ** objects declared as MEMBER types can be admissible arguments to
1917 structure accessors.
1918 ** printing characters should simply be printed by the FORMAT ~:C
1920 ** compiler failure when compiling functions with hairy constant
1921 defaults for optional parameters.
1922 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1923 function, which is already optimized.
1925 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1926 * new platform: experimental support for SBCL x86/Darwin, including
1927 MacOS X 10.4.5 on Intel.
1928 * new feature: Unicode character names are now known to the system
1929 (through CHAR-NAME and NAME-CHAR).
1930 * new feature: the filesystem location of SBCL's core file is
1931 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1932 * minor incompatible change: the contrib modules SB-POSIX and
1933 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1934 this change is to make it easier to distribute
1935 location-independent binaries.
1936 * bug fix: as implied by AMOP, standardized classes no longer have
1937 slots named by external symbols of public packages. (reported by
1939 * optimization: calling functions via constant symbols -- as in
1940 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1941 via the function object as in (FUNCALL #'FOO).
1942 * optimization: on x86 and x86-64, the calling convention for the
1943 case of dealing with an unknown number of values has been altered
1944 to be friendlier to the prediction heuristics implemented,
1945 particularly with reference to CALL and RET pairing. (thanks to
1946 Alastair Bridgewater)
1947 * optimization: on x86, the code for access to thread-local symbol
1948 values and binding/unbinding of thread-local symbols is smaller.
1949 (thanks to Alastair Bridgewater)
1950 * enhancement: CONSTANTP is now able to determine constantness of
1951 more complex forms, including calls to constant-foldable standardized
1952 functions and some special forms beyond QUOTE.
1953 * fixed bug: occasional GC crashes on Solaris/x86
1954 * optimization: x86-64 supports stack allocation of results of simple
1955 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1956 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1957 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1958 (thanks to James Knight)
1959 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1960 by the standard (thanks to Stephen Compall)
1962 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1963 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1964 be used for bundling the runtime and the core file into one
1965 executable binary. This feature is not currently supported on all SBCL
1966 platforms. (thanks to James Bielman and NIIMI Satoshi)
1967 * new feature: a generational or ephemeral garbage collector is now
1968 the default on the PowerPC platform (both Linux and Darwin). The
1969 old Cheney (stop and copy) collector is a build-time option.
1970 (thanks to Cyrus Harmon, after Raymond Toy)
1971 * minor incompatible change: the method by which SBCL finds its
1972 contributed modules has changed; it no longer relies on symbolic
1973 links from an $SBCL_HOME/systems directory, but searches directly
1974 in the subdirectories of $SBCL_HOME.
1975 * enhancement: the dynamic heap size on the Linux/PPC platform is
1976 markedly larger, even using the older Cheney garbage collector.
1977 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1978 certain complicated string types. (reported by Gary King)
1979 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1980 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1981 * fixed bug: DOCUMENTATION on structures no longer signals an
1982 error if no structure type of the right name exists. (reported by
1984 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1985 applicable non-standard primary or :AROUND method on
1986 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1987 no longer cause unbound variable errors. (reported by Kevin Reid)
1988 * fixed bug: metacircle resolution in cases where methods have slots
1989 added before the slots from STANDARD-METHOD. (reported by Jean
1991 * fixed bug: the Power PC assembly code for calling into lisp
1992 sometimes computed its return address wrongly (depending on the
1993 15th bit of the address, fixed at link time). This used to
1994 manifest itself in a segmentation violation while building PCL.
1995 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1996 many others over the years)
1997 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1998 the stack pointer (treated as a signed integer) is negative.
1999 (thanks to Peter van Eynde)
2001 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2002 * new platform: experimental support for the Windows operating
2003 system has been added. (thanks to Alastair Bridgewater)
2004 * fixed several bugs in and robustified the PPC FFI (including
2005 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2006 * bug fix: allow non-simple string symbol names (reported by Paul
2008 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2010 * bug fix: saving a core corrupted callbacks on x86/x86-64
2011 * bug fix: closed a loophole in metacircularity detection and
2012 grounding in the PCL implementation of CLOS.
2013 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2014 (reported by tomppa on #lisp)
2015 * bug fix: clear the direction flag on Lisp -> C transitions, as
2016 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2017 (reported by Andrej Grozin and Hendrik Maryns)
2018 * optimization: major improvements to GC efficiency on GENCGC platforms
2019 * optimization: faster implementation of EQUAL
2020 * optimization: emit more efficient opcodes for some common
2021 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2022 * optimization: several other minor code-generation improvements on x86-64
2023 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2025 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2026 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2027 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2028 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2029 by ANSI as a generic function, and for consistency (SETF
2030 GENERIC-FUNCTION-NAME) is treated likewise.
2031 * fixed bug #233.b: make constraint propagation notice when a variable
2032 value is changed after it is referenced but before it is used
2033 * fixed bug #296: no more arbitrary behaviour from filenames with
2034 odd characters as --load arguments. (reported by Adam Warner)
2035 * fixed bug #390: :CHARACTER-SET pathname components now work as
2036 expected. (reported by Tim Daly Jr)
2037 * fixed bug #391: complicated :TYPE intersections in slot
2038 definitions no longer cause an error in PCL internals.
2039 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2040 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2041 returning the number of octets which would be written to the
2042 file-stream. (thanks to Robert J. Macomber)
2043 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2044 arguments to the internal stream functions. (thanks to David
2046 * bug fix: stack exhaustion is now handled on the x86/SunOS
2047 platform. (thanks to Daisuke Homma)
2048 * bug fix: more accurate ROOM results on GENCGC platforms
2049 * optimization: improved type inference for arithmetic-for
2050 index variables in LOOP
2051 * optimization: faster floating-point SQRT on x86-64
2052 * fixed some bugs revealed by Paul Dietz' test suite:
2053 ** DOCUMENTATION returns NIL instead of "" for method combinations
2054 that don't have a docstring
2056 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2057 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2058 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2059 therefore are not customizeable by user code (as seems to be at
2060 least permitted and maybe required by AMOP). As a consolation,
2061 however, the SBCL implementation of these functions now calls
2062 REINITIALIZE-INSTANCE as specified by AMOP.
2063 * bug fix: slot-definition documentation is propagated as per ANSI
2064 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2065 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2066 argument, as do eslotd initialization methods. (from Pascal
2067 Costanza's "Closer" project)
2068 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2069 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2071 * bug fix: it is now possible to have more than one subclass of
2072 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2073 (reported by Bruno Haible, Pascal Costanza and others)
2074 * bug fix: the dependent update protocol now works for generic
2075 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2076 and Pascal Costanza)
2077 * bug fix: condition-class instances corresponding to
2078 DEFINE-CONDITION forms are now created eagerly. (reported by
2079 Kalle Olavi Niemitalo on comp.lang.lisp)
2080 * bug fix: floating point printing is more accurate in some
2081 circumstances. (thanks to Simon Alexander)
2082 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2083 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2084 * bug fix: callbacks on OS X now preserve stack-alignment.
2085 (thanks to Cyrus Harmon)
2086 * enhancement: the x86-64 disassembler is much better at
2087 disassembling SSE instructions. (thanks to Lutz Euler)
2088 * enhancement: CHECK-TYPE on a variable now allows type-inference
2089 (thanks to Vincent Arkesteijn)
2090 * optimization: improved performance of EUC-JP external format.
2091 (thanks to NIIMI Satoshi)
2092 * optimization: performance improvements to IO on file streams of
2093 :ELEMENT-TYPE CHARACTER
2094 * optimization: much faster memory allocation on x86-64
2095 * optimization: faster garbage collections (latency and throughput)
2097 * optimization: faster bignum subtraction and division on x86 and x86-64
2098 (thanks to Lutz Euler)
2099 * optimization: more accurate type-inference for loops that use a
2100 floating point index variable or a negative step.
2102 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2103 * bug fix: add a workaround to SBCL looping infinitely at startup on
2104 Linux kernels with apparently buggy implementations of personality().
2105 (thanks to Svein Ove Aas)
2106 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2107 (thanks to David Lichteblau)
2108 * bug fix: local bindings shadow global symbol macros for
2109 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2110 * optimization: non-open coded uses of numeric comparison operators
2111 (e.g. >) no longer cons when called with more than one parameter
2112 on platforms supporting dynamic-extent allocation.
2113 * enhancement: saving cores with foreign code loaded is now supported
2114 on MIPS/Linux in addition to the previously supported platforms.
2115 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2116 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2117 * bug fix: division by zero in sb-sprof when no samples were collected
2118 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2119 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2120 (thanks to Alexander Kjeldaas)
2121 * new feature: ignoring the return values of destructive functions
2122 like NREVERSE signals a compile-time style-warning.
2123 (thanks to Kevin Reid)
2124 * new feature: the alignment of alien structure fields can be
2125 explicitly specified. (thanks to Cyrus Harmon)
2126 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2127 and dump core on SIGQUIT
2129 ** incompatible change: threads do not inherit values of specials
2130 from their parents (see manual)
2131 ** bug fix: threads stacks belonging to dead threads are freed by the
2132 next exiting thread, no need to gc to collect thread stacks anymore
2133 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2134 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2135 ** bug fix: dynamic variable and thread start related gc lossage
2136 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2138 * fixed some bugs revealed by Paul Dietz' test suite:
2139 ** SUBTYPEP is slightly more accurate on heinously complicated
2140 CONS types where some of the members have uncertain (in the
2141 NIL, NIL sense) type relationships to each other.
2143 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2144 no longer purified unless :PURIFY T is explicitly specified.
2145 ** Non-purified cores are significantly smaller than before
2147 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2148 * new feature: timers based on Zach Beane's excellent timer package
2149 * added support for the following external formats: koi8-u,
2150 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2151 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2152 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2153 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2154 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2155 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2156 * incompatible change: a threaded SBCL will no longer revert to
2157 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2158 * bug fix: interrupts are disabled until startup is complete; no
2159 more sigsegvs when receiving a signal to soon
2160 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2162 * bug fix: add a workaround for the memory randomization features in
2163 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2164 workaround will only be in effect on systems with the proc filesystem
2166 * bug fix: printing objects of type HASH-TABLE signals a
2167 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2169 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2170 have been running for over 50 days. (reported by Gilbert Baumann)
2171 * bug fix: the logic for getting names of functions gets less
2172 confused when confronded with alternate-metaclass
2173 funcallable-instances. (reported by Cyrus Harmon)
2174 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2175 consistent, even on internal alternate-metaclass objects.
2176 * bug fix: flush closure information collected by physical
2177 environment analysis prepass before the main pass. (bug reported
2179 * bug fix: compiler pack phase does not modify a hashtable, which is
2180 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2181 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2182 may be expanded. (reported by Alexander <malishev> on c.l.l)
2183 * bug fix: no more style-warnings when compiling code using LAST
2184 under high-SPEED low-SPACE settings. (reported by David Wallin
2186 * fixed some incompatibilities between SBCL's MOP and the MOP
2188 ** the METAOBJECT class is now implemented;
2189 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2190 STANDARD-OBJECT, as required;
2191 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2192 now compatible (as required by VALIDATE-SUPERCLASS); there
2193 remains a consistency requirement over the presence or absence
2194 of the FUNCTION class in the superclass list of finalized
2195 classes; see the manual for more details;
2196 ** the :AROUND method for COMPUTE-SLOTS on
2197 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2198 requested slot ordering.
2200 ** bug fix: parent thread now can be gc'ed even with a live
2202 ** bug fix: binding a special with PROGV to no value is not
2203 the same as that symbol not having been bound (thanks to
2205 ** bug fix: binding specials is thread safe (thanks to
2207 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2208 and SB-SPROF do not die with 'no handler for signal XX in
2209 interrupt_handle_now(..)' anymore
2210 ** bug fix: WITH-TIMEOUT works with multiple running threads
2211 * fixed some bugs revealed by Paul Dietz' test suite:
2212 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2213 the :method-class keyword argument.
2215 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2216 * new port: the Solaris operating system on x86 processors is now
2217 mostly supported, though some rough edges in the environment
2218 remain. (thanks to Daisuke Homma)
2219 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2220 space for its heap. (thanks to Thiemo Seufer)
2221 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2222 closures. (thanks to Thiemo Seufer)
2223 * minor incompatible change: eof selects abort in the debugger.
2224 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2225 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2227 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2228 deprecated, and will go away in a future revision of SBCL.
2229 * minor incompatible change: GC-ON and GC-OFF are no longer
2230 implemented with a counter, it does not matter how many times gc
2231 is switched on or off
2232 * bug fix: discriminating functions for generic function classes
2233 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2234 make invalid assumptions about method precedence order. (reported
2236 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2237 platforms. (thanks to Thiemo Seufer)
2238 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2239 * bug fix: correct pathname printing with printer escaping is on.
2240 (thanks to Kevin Reid)
2241 * bug fix: complex VOP definitions in "user-space" no longer trigger
2242 package locks. (reported by Zach Beane)
2243 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2244 for funcallable-instance functions, and is no different from
2246 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2247 characters in the current readtable. (reported by Nicholas Neuss)
2248 * bug fix: SUBTYPEP on various CONS types returns more a more
2249 accurate acknowledgment of its certainty.
2250 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2251 lists in some cases. This partially fixes bug 384.
2252 * flush all standard streams before prompting in the REPL and the
2254 * bug fix: signal handling and triggering gc do not conflict
2255 directly anymore, in particular a high frequency sb-sprof does
2256 not prevent gc from running
2257 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2258 approximation for timezone and DST information between the
2259 universal time epoch and the smallest negative 32-bit time_t.
2260 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2261 year 1899 so long as the encoded time is non-negative.
2262 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2263 the correct answer for non-constant rotate amounts when performing
2264 an inline 32-bit rotation.
2266 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2267 there is only one thread in the session
2268 ** bug fix: memory leak for streams created in one thread and
2269 written to in another
2270 ** bug fix: lockup when compiled with gcc4
2271 ** bug fix: race that allows the gc to be triggered when gc is
2273 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2274 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2276 ** bug fix: finished threads are gc'ed properly
2277 * fixed some bugs revealed by Paul Dietz' test suite:
2278 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2279 has arguments with a different set of applicable methods from
2280 the orignal arguments.
2281 ** The type error thrown by MAP now has a correct expected-type
2283 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2284 name a compiled function.
2285 ** Three MISC tests where a large bignum was improperly coerced to
2286 a float that couldn't represent that bignum during type
2287 derivation were fixed.
2288 ** SUBTYPEP can now handle types involving the negation of a
2289 list-form FUNCTION type.
2290 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2291 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2292 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2294 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2295 * New feature: Experimental support for bivalent streams: streams
2296 opened with :element-type :default now allow character and binary
2297 (unsigned-byte 8) I/O
2298 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2299 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2301 * bug fix: no more highly sporadic "couldn't check whether ~S is
2302 readable" when reading a stream and an interrupt hits in the middle
2303 of a select system call
2304 * compiler better recognizes complex arrays (reported by Eduardo
2306 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2307 for variables on SBCL built with linkage-tables. (reported by Luis
2309 * various error reporting improvements.
2310 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2311 (Thanks to Thiemo Seufer)
2312 * bug fix: nested reader invokations work correctly
2313 * bug fix: it is possible to have simultaneous references to foreign
2314 code and foreign data with the same name.
2316 ** added x86-64 support
2317 ** incompatible change: the threading api now works with thread
2318 objects instead of thread ids
2319 ** bug fix: threads are protected from signals and interruption when
2320 starting up or going down
2321 ** bug fix: a race where an exiting thread could lose its stack to gc
2322 ** bug fix: don't halt on infinite error in threads if possible
2323 ** fixed numerous gc deadlocks introduced in the pthread merge
2324 ** bug fix: fixed thread safety issues in read and print
2325 ** bug fix: debugger doesn't hang on session lock if interrupted at
2326 an inappropriate moment
2327 ** bug fix: run-program is now thread safe(r)
2328 ** bug fix: inner with-recursive-lock no longer releases the mutex
2329 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2330 * fixed some bugs revealed by Paul Dietz' test suite:
2331 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2332 EXPECTED-TYPE slots filled.
2333 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2335 ** MAKE-CONDITION accepts classes as type-designators.
2336 ** COMPILE may never return NIL.
2337 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2338 range before calling Unix time functions
2340 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2341 * numerous signal handling fixes to increase stability
2342 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2343 * minor incompatible change: we now correctly canonize default
2344 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2345 as per the MOP, rather than the historical (INITARG INITFUNCTION
2346 INITFORM). (reported by Bruno Haible)
2347 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2348 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2349 for more information.
2350 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2351 pathname is a directory pathname.
2352 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2353 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2355 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2356 :METACLASS argument in addition to a class name. (reported by
2357 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2358 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2359 (reported by Bruno Haible; patch from Gerd Moellmann)
2360 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2362 * bug fix: more cleanups to the floating point exception handling on
2363 x86-64 (thanks to James Knight)
2364 * bug fix: the compiler does not try to constant fold calls of
2365 COERCE and BIT-* functions when they return freshly constructed
2366 objects. (reported by Nikodemus Siivola and Paul Dietz)
2367 * optimization: improved the MIPS versions of generic (in the
2368 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2369 * optimization: direct conversion of (unsigned-byte 32) to floats on
2370 the PowerPC platform.
2371 * optimization: structure instances with raw slots now use less
2372 memory, and probably show better memory locality. (thanks to
2374 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2375 are treated as requests for stack allocation on the x86-64,
2376 Alpha-32, PPC and SPARC platforms.
2377 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2378 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2379 (thanks to Tony Martinez)
2381 ** gcing a dead thread can no longer lead to lockups
2382 ** threads block signals until they are set up properly
2383 ** errno is no longer shared by threads
2384 ** interrupt-thread restores the eflags register on x86
2385 ** fixed some lockups due to gc/thread interaction
2386 * fixed some bugs revealed by Paul Dietz' test suite:
2387 ** invalid dotted lists no longer raise a read error when
2388 *READ-SUPPRESS* is T
2389 ** signal an error if a symbol that names a declaration is used
2390 as the name of a type, or vice versa
2391 ** allow using the (declare (typespec var*)) abbreviation for
2392 (declare (type typespec var*)) with all type specifiers
2393 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2394 ** always return NIL from PPRINT-POP when OBJECT is NIL
2395 ** don't signal errors when pretty-printing malformed LABELS,
2396 FLET or MACROLET forms
2397 ** declarations in a DOLIST body are also in scope for the
2399 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2401 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2404 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2405 * fixed cross-compiler leakages that prevented building a 32-bit
2406 target with a 64-bit host compiler.
2407 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2408 opened with :IF-EXISTS :OVERWRITE.
2409 * fixed bug 281: error for an invalid qualifier in a short-form method
2410 combination method is not signalled until the faulty method is called.
2411 * bug fix: iteration variable type inferrer failed to deal with open
2412 intervals. (reported by Alan Shields)
2413 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2414 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2415 or more runtime options were provided to the sbcl binary.
2416 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2417 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2418 * optimization: there's now a fast-path for fixnum arguments in the
2419 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2420 * optimization: the code generated on x86-64 is more compact thanks
2421 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2422 * bug fix: floating-point exception handling now partly works on
2423 x86-64. (Thanks to James Knight)
2424 * improvement to the MIPS backend from Thiemo Seufer: C-style
2425 64-bit long long arguments and return values to alien functions
2427 * fixed some bugs revealed by Paul Dietz' test suite:
2428 ** the type-error signalled from WARN has a filled-in DATUM slot.
2429 ** the type-error required when a stream is not associated with
2430 a file has the stream as its datum.
2431 ** type-errors on single-floats on x86-64 no longer have
2432 :INVALID-OBJECT as the datum
2433 ** the type-errors signalled for invalid function names now have
2434 a correct expected type
2435 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2436 for structures defined with a :TYPE. Documentation strings for
2437 typed structures are no longer immediately discarded
2438 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2439 broadcast streams and synonym streams. FILE-LENGTH now also works
2440 on broadcast streams.
2442 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2443 * incompatible change: the --noprogrammer option, deprecated since
2444 version 0.7.5, has been removed. Please use the equivalent
2445 --disable-debugger option instead.
2446 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2448 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2449 inoperational for a while now) has been completely removed.
2450 * null lexical environments are now printed as #<NULL-LEXENV>,
2451 significantly reducing the amount of clutter in typical backtraces.
2452 * documentation on weak pointers, finalization, and after GC hooks
2453 has been added to the manual.
2454 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2455 as other specialized array types, is much faster. SUBSEQ and
2456 COPY-SEQ on such arrays have also been sped up.
2457 * optimization: EQL is now more efficient when at least other argument
2458 is known to be of type (OR FIXNUM (NOT NUMBER)).
2459 * fixed bug: the runtime is now less vulnerable to changes in the
2460 size of the SBCL object on OS X, and virtual memory is reserved for
2461 all spaces that need to be at a fixed address.
2462 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2463 * fixed bug: finalizers and after GC hooks that cause consing are now
2465 * fixed bug: compiler error messages and summaries are now printed to
2466 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2467 * fixed inference of the upper bound of an iteration variable.
2468 (reported by Rajat Datta).
2469 * fixed bug 211e: calling local functions with duplicated constant
2470 keyword argument no longer causes a bogus style warning about an
2472 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2473 ftype declaration to be disregarded. (reported by Dave Roberts)
2474 * fixed bug 373: caused by erronous compilation of references to alien
2475 variables in the runtime on ppc/darwin.
2476 * fixed bug 376: CONJUGATE type deriver.
2477 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2478 (reported by Baughn on #lisp)
2479 * a cross-compiler bug on non-x86 platforms has been identified and
2480 fixed. (thanks to Bruno Haible)
2481 * improvements to the MIPS runtime code for increased stability.
2482 (thanks to Thiemo Seufer)
2483 * increased the maximimum compact environment size to allow
2484 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2485 * partial workaround for bug 135: don't name the function we're
2486 calling for hairy cases of EVAL, so as not to accumulate one environment
2487 entry per call to EVAL. (reported by Kevin Reid)
2488 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2489 * optimization: type testing for non-vector arrays should be faster.
2490 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2492 * bug fix: setting 31st element of a bit vector to zero did not work
2494 * bug fix: redefining a class definition which failed due to a
2495 previous accessor / function clash now works (but see BUGS entry
2496 #380 for more problems in this area). (thanks to Zach Beane)
2497 * the long form of DEFINE-METHOD-COMBINATION disables method group
2498 checking when given a single method group with pattern *. (thanks
2500 * on x86 compiler supports stack allocation of results of simple
2501 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2502 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2503 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2504 * fixed some bugs related to Unicode integration:
2505 ** the restarts for recovering from input and output encoding
2506 errors only appear when there is in fact such an error to
2508 * fixed some bugs revealed by Paul Dietz' test suite:
2509 ** MISC.549 and similar: late transformation of unsafe type
2510 assertions into derived types caused unexpected code
2512 ** SCALE-FLOAT type deriver is less wrong.
2513 ** type derivers for EXP, LOG and similar functions compute result
2514 types for complex arguments better.
2515 ** (MISC.563) CONJUGATE type deriver works for very restricted
2517 ** out-of-line type testers for character strings are available.
2518 ** EQUAL compiler transform understands specialness of objects
2520 ** accessing double-floats stored on the stack now works on x86-64.
2521 ** debugger internals could sometimes create invalid lispobjs,
2522 resulting in GC crashes.
2523 ** MISC.548: type check weakening can convert required type into
2525 ** initialization forms for bindings are not in scope of free special
2528 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2529 * incompatible change: thread support for non-NPTL systems has
2530 been removed - locking is buggy and unreliable. A threaded
2531 SBCL build will now warn at startup and refuse to create
2532 new threads, unless futex support is detected in the kernel
2533 * incompatible change: the top level REPL now has only an ABORT
2534 restart associated with it, not TOPLEVEL and ABORT as it used to.
2535 TOP and TOPLEVEL are now available as debugger commands for
2536 returning to the top level.
2537 * incompatible change: forms evaluated in the REPL now use the
2538 global optimization policy.
2539 * incompatible change: user- and system-initialization files are
2540 no longer processed with LOAD, but by READ and EVAL; hence the
2541 global optimization policy, startup package, readtable, etc,
2543 * The .fasl file format number has been incremented because of
2544 various incompatible changes.
2545 * internal entry point details and argument counts no longer appear
2546 in backtraces unless explicitly requested by setting
2547 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2548 * built-in and standard functions no longer have names like "top
2549 level local call to FOO".
2550 * fixed bug 32: functions defined in non-null lexical environments
2551 now have more legible printed representation
2552 * fixed bug 33: functions defined in non-null lexical environemnts
2553 are now more amenable to inspection by INSPECT.
2554 * workaround for bug 354: XEPs no longer appear in backtraces unless
2555 explicitly requested.
2556 * fixed bug: receiving the signal which results from attempting to
2557 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2558 SIGBUS on other *BSDs) on architectures where the C stack is also
2559 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2560 to debugger confusion or wild instability. (reported by Cheuksan
2562 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2563 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2564 (reported by Lutz Euler)
2565 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2566 compiled code. (reported by Paul Dietz)
2567 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2568 specialized parameter to a method to something that is not TYPEP
2569 the specializer is now possible.
2570 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2571 face of package deletion.
2572 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2573 pathname. (reported by David Tolpin on c.l.l)
2574 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2575 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2576 STRING-STREAM and FILE-STREAM, respectively.
2577 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2578 than previously; in addition, its test suite is now run on build.
2579 (thanks to Luke Gorrie)
2580 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2581 * optimization: added a immediate representation for single-floats
2583 * fixed some bugs revealed by Paul Dietz' test suite:
2584 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2585 ** attempting to create a package with a colliding nickname causes
2586 correctable errors to be signalled.
2587 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2588 ** several x86-64 backend bugs related to sign-extension of immediate
2591 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2592 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2593 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2595 * fixed loading of multiply forward-referenced layouts.
2596 (thanks to Cheuksan Wang)
2597 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2598 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2599 (see COMPILE-FILE documentation for details of :PRINT option)
2600 * fixed bugs 19 and 317: fixed-format floating point printing is
2601 more accurate. This also fixes a bug reported by Adam Warner
2602 related to the ~@F format directive.
2603 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2605 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2606 dispatch table if the from-char is a dispatch macro character.
2607 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2608 by the wordsize no longer ignore the last word. (reported by Lutz
2610 * fixed bug in type checking of dynamic-extent variables. (reported
2612 * optimization: sequence traversal functions use their freedom to
2613 coerce function designators to functions.
2614 * optimization: code with many calls to CLOS methods specialized on
2615 CLOS classes has had redundant type checks removed.
2616 * optimization: added declarations to speed up operations that access
2617 the internal character database (for example STRING-UPCASE)
2618 * optimization: comparison operations between floats and sufficiently small
2619 fixnums no longer create extra rationals
2620 * fixed some bugs related to Unicode integration:
2621 ** portions of multibyte characters at the end of buffers for
2622 character-based file input are correctly transferred to the
2623 start of the buffer at the next read.
2624 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2625 passing it through to OPEN.
2626 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2627 argument given to internal calls to OPEN.
2628 ** the built-in comment readers (introduced by character sequences
2629 ";" and "#|") are more forgiving to encoding errors; they will
2630 STYLE-WARN and then attempt to resync the stream at a character
2631 boundary. (thanks to Teemu Kalvas)
2632 * fixed some bugs in the x86-64 port:
2633 ** Negative short int return values from c-calls are sign-extended
2635 ** The stack is aligned to 16-bytes for c-calls, as required by
2636 the ABI. (thanks to Cheuksan Wang)
2637 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2638 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2639 for enums. (thanks to Vincent Arkesteijn)
2640 ** Multiple small optimizations and bugfixes for floating point
2642 * fixed some bugs revealed by Paul Dietz' test suite:
2643 ** Space, Tab, Linefeed, Return and Page have the invalid
2644 secondary constituent character trait.
2645 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2647 ** WITH-INPUT-FROM-STRING should only update the index place on
2649 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2650 works more reliably.
2651 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2652 with one-dimensional arrays with fill pointers.
2653 ** TYPE-OF failed on a complex with an integer realpart and a
2655 ** compiler failure during type inference for the code of form
2656 (IF (EQL X (THE ...)) ...) (MISC.535).
2658 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2659 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2660 platform. The port supports 61-bit fixnums, large memory spaces
2661 and reloading shared object files.
2662 * enhancement: saving cores with foreign code loaded is now
2663 supported on ppc/Darwin in addition to the previously supported
2665 * enhancement: the statistical profiler now walks deeper into the
2666 call stack for more meaningful call-graphs and accrued time
2667 reports (x86/x86-64 only). It also now reports time spent in
2669 * enhancement: it is now possible to trace most individual methods
2670 of a generic function in addition to tracing the generic function
2672 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2674 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2675 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2676 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2677 produces an error. (thanks to Vincent Arkesteijn)
2678 * bug fix: NAMESTRING on pathnames with :WILD components in their
2679 directories works correctly. (thanks to Artem V. Andreev)
2680 * fixed bug 125: compiler preserves identity of closures. (reported
2682 * bug fixed: functions with &REST arguments sometimes failed with
2683 "Undefined function" when compiled with (DEBUG 3). (reported by
2685 * bug fix: overflow during compiling of setting element of a bit
2686 vector with constant index and value. (reported by Timmy Douglas)
2687 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2688 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2689 * on x86 compiler partially supports stack allocation of dynamic-extent
2691 * GO and RETURN-FROM do not check the extent of their exit points
2692 when compiled with SAFETY 0.
2693 * fixed some bugs related to Unicode integration:
2694 ** encoding and decoding errors are now much more robustly
2695 handled; it should now be possible to recover even from invalid
2696 input or output to the terminal. (thanks to Teemu Kalvas)
2697 ** provided a first cut at implementing STRING-TO-OCTETS and
2698 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2699 ** altered the SB-MD5 contributed module slightly, changing the
2700 interface just enough for it to be supportable for builds where
2701 lisp characters are not eight bits.
2702 * fixed some bugs revealed by Paul Dietz' test suite:
2703 ** the FORMATTER-generated functions for ~V[ conditionals require
2704 the correct number of arguments.
2705 ** READ-FROM-STRING returns the mandated second value when applied
2706 to displaced strings.
2707 ** the #\Rubout and #\Backspace characters are treated as invalid
2708 constituent characters by the tokenizer.
2710 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2711 * new feature: reloading changed shared object files with
2712 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2713 * new feature: references to foreign variables and functions
2714 can now be compiled and loaded before the corresponding shared
2715 object file is loaded, as long as the foreign definitions are
2716 available at runtime.
2717 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2718 supported. (thanks to Dan Debertin)
2719 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2720 just keywords. (thanks to Vincent Arkesteijn)
2721 * fixed bug #331: structure-class instances corresponding to
2722 DEFSTRUCT forms are now created eagerly.
2723 * fixed bug #345: backtraces from calls to undefined functions work
2724 on x86 as well. Related bug #61 is now also partially fixed on x86
2725 (backtraces from throws to unknown catch tags.)
2726 * bug fix: lambda-list parsing is now stricter vrt. order and number
2727 of lambda-list keywords.
2728 * bug fix: as specified by AMOP, an error is signalled if a
2729 class-option appears multiple times in a DEFCLASS form. (reported
2731 * bug fix: RANDOM can be compiled when the compiler derives the type
2732 of its numeric argument as a disjoint set of small integers.
2733 (reported by Paul Dietz)
2734 * bug fix: starting a core saved with shared objects loaded when
2735 those objects are not available no longer causes threaded SBCL to
2736 hang. (reported by Sean Ross)
2737 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2739 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2740 argument, which must always be NIL. (reported by Kalle Niemitalo)
2741 * bug fix: printing 1.0d+23 no longer results in an error.
2742 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2743 * bug fix: structure slot setters preserve evaluation order. (thanks
2745 * fixed some bugs related to Unicode integration:
2746 ** RUN-PROGRAM can allow its child to take input from a Lisp
2747 stream. (reported by Stefan Scholl)
2748 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2749 locales. (reported by Ken Causey)
2750 * fixed some bugs revealed by Paul Dietz' test suite:
2751 ** INCF, DECF and REMF evaluate their place form as specified in
2753 ** FORMATTER expands ~{ ~} iteration directives with V or #
2754 parameters correctly.
2755 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2756 consequent uses no arguments correctly.
2757 ** the system has a partial understanding of the (COMPLEX RATIO)
2759 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2762 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2763 * new feature: a build-time option (controlled by the :SB-UNICODE
2764 keyword feature, enabled by default) for building the system with
2765 support for the entire 21-bit character space defined by the
2767 * new feature: the system now has rudimentary external-format
2768 support; the primary user-visible change at this time is that
2769 characters with the high bit set (such as lower-case-e-acute) will
2770 print correctly to a terminal in a UTF-8 environment.
2771 * minor incompatible change: BASE-CHAR no longer names a class;
2772 however, CHARACTER continues to do so, as required by ANSI.
2773 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2774 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2775 has been moved to the SB-EXT package (temporarily re-exported from
2777 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2778 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2780 * fixed bug #351: better error-handlind and reporting for malformed
2782 * fixed bug #350: bignum-printing is now more memory-efficient,
2783 allowing printing of very large bignums, eg. (expt 2 10000000).
2784 (reported by Bruno Haible)
2785 * fixed bug #302: better primitive-type selection for intersection
2787 * fixed bug #308: non-graphic characters now all have names, as
2788 required. (reported by Bruno Haible)
2789 * bug fix: redefining a class with different superclasses now correctly
2790 removes it from the direct-subclasses of its previous superclasses.
2791 (reported by David Morse)
2792 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2793 new value now works. (reported by Bruno Haible)
2794 * bug fix: correct canonicalization of multiple non-standard slot
2795 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2796 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2797 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2798 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2799 now exists, an signals an error.
2800 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2801 during macroexpansion for non-iteration variables as well. (reported
2802 by Bruno Haible for CMUCL)
2803 * bug fix: Cyclic structures and unprintable objects in compiler
2804 messages no longer cause errors. (reported by Bruno Haible)
2805 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2806 and READ-FROM-STRING all now return a primary value of NIL if
2807 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2808 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2809 (reported by Bruno Haible for CMUCL)
2810 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2811 do not designate a condition. (reported by Bruno Haible for
2813 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2814 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2815 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2816 permitting resolution in favour of any of the conflicting symbols.
2817 (reported by Bruno Haible for CMUCL)
2818 * bug fix: EQUAL compiler optimizations is less aggressive on
2819 strings which can potentially compare true despite having distinct
2820 specialized array element types.
2821 * bug fix: unit enumerations can be defined without dividing by
2822 zero. (thanks to Vincent Arkesteijn)
2823 * FORMAT compile-time argument count checking has been enhanced.
2824 (report from Bruno Haible for CMUCL)
2825 * a partial workaround for the bug 262: the compiler does not try to
2826 inline-expand a local function doing RETURN-FROM from a deleted
2827 BLOCK. (thanks to Peter Denno for the bug report and to David
2828 Wragg for the simple test case)
2829 * fixed some bugs revealed by Paul Dietz' test suite:
2830 ** RENAME-PACKAGE allows all package designators as new package
2832 ** constraint propagation and lambda variable substitution are
2833 more cautious in dealing with partially deleted code.
2834 ** compiler sometimes lost reoptimization passes.
2835 ** CERROR, given a condition as condition designator, passes its
2836 remaining arguments to the continue format control without
2838 ** Case-altering FORMAT directives work correctly on non-ASCII
2840 ** The REAL type specifier handles bounds outside the floating
2841 point ranges without signalling FLOATING-POINT-OVERFLOW.
2842 ** Functions with IR1-transformations can create intercomponent
2843 references to global functions.
2844 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2846 ** FORMAT ~R treats a nil value for its first parameter correctly.
2848 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2849 * enhancement: saving cores with foreign code loaded is now
2850 supported on x86/NetBSD and sparc/Linux in addition to the previously
2851 supported platforms.
2852 * bug fix: on some platforms repeated installations caused multiple
2853 copies of HTML documentation to be installed -- should not happen
2854 any more. (reported by Stefan Scholl)
2855 * bug fix: parsing self-recursive alien record types multiple times
2856 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2857 original patch by Helmut Eller for CMUCL)
2858 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2859 (thanks to Richard Kreuter)
2860 * bug fix: defining classes whose accessors are methods on existing
2861 generic functions in other (locked) packages no longer signals
2862 bogus package lock violations. (reported by François-René Rideau)
2863 * bug fix: special variables as DEFMETHOD parameters no longer have
2864 associated bogus type declarations. (reported by David Wragg and
2866 * bug fix: read-write consistency on streams of element-type
2867 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2868 * bug fix: redefiniton of the only method of a generic function with
2869 no DEFGENERIC no longer emits a full WARNING. In addition,
2870 redefinition of generic functions with no DEFGENERIC to an
2871 incompatible lambda list now signals an error. (thanks to Zach
2873 * bug fix: DEFGENERIC now works even when there's a function of the
2874 same name in an enclosing lexical environment. (thanks to Zach
2876 * fixed compiler failure, caused by instrumenting code during
2877 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2878 * optimization: added loop analysis and improved register allocation
2879 * fixed some bugs revealed by Paul Dietz' test suite:
2880 ** POSITION on displaced vectors with non-zero displacement
2881 returns the right answer.
2882 ** (SIMPLE-STRING) is a valid type specifier for sequence
2884 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2886 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2887 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2889 ** The justification version of the FORMAT ~< directive treats
2890 non-zero minpad parameter correctly.
2892 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2893 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2894 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2895 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2896 the supported interface.
2897 * new feature: Single-stepping of code compiled with DEBUG 2 or
2898 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2899 * new feature: saving cores with foreign code loaded is now
2900 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2901 Timothy Moore's work for CMUCL)
2902 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2903 parameters to * instead of NIL if no initform is supplied.
2904 (reported by Johan Bockgaard)
2905 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2906 correctly when FUNCALL appears as the car of the form. Note:
2907 despite this FUNCALL forms are not currently subject to
2908 compiler-macro expansion. (port of Raymond Toy's fix for the
2909 same from CMUCL, reported by Johan Bockgaard)
2910 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2911 (thanks for Teemu Kalvas)
2912 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2913 case instead of terminating the iteration (thanks for Julian
2914 Squires, Sean Champ and Raymond Toy)
2915 * bug fix: incorrect expansion of defgeneric that caused a style
2916 warning. (thanks for Zach Beane)
2917 * bug fix: slot accessor effective method computation works properly
2918 for classes with multiple non-standard applicable methods on
2919 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2920 * on x86 compiler supports stack allocation of results of LIST and
2921 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2922 CMUCL implementation by Gerd Moellmann)
2923 * fixed some bugs revealed by Paul Dietz' test suite:
2924 ** FORMAT strings with both the ~<~:;~> form of the justification
2925 directive and pretty-printing directives cause an error.
2927 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2928 * incompatible change: the internal functions
2929 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2930 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2931 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2932 instead of the old functions.
2933 * new feature: on platforms where "dladdr" is available foreign
2934 function names now appear in backtraces. (based on Helmut Eller's
2936 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2937 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2939 * documentation: ASDF manual is now distributed with SBCL.
2940 * bug fix: SBCL can now load its contributed modules with REQUIRE
2941 even if the system-provided entries have been removed from
2942 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2944 * bug fix: backtraces involving undefined functions or assembly
2945 routines are more informative. (thanks to Brian Downing)
2946 * bug fix: mutually referent alien structures now work correctly.
2947 (reported by Rick Taube)
2948 * bug fix: structures defined by WITH-ALIEN can be referred to
2949 within other definitions in the same WITH-ALIEN.
2950 * bug fix: division operators (MOD, TRUNCATE and the like) with
2951 constant zero divisors and integer dividends no longer generate
2953 * bug fix: provide default methods for INPUT-STREAM-P and
2954 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2955 * bug fix: improve the detection and resolution of MOP metacycles
2956 (where effective method computation depends on the generic function
2957 having its effective method computed). (reported by Bruno Haible)
2958 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2959 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2960 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2961 * bug fix: pathnames with relative directory components can be
2962 represented relative to default pathnames.
2963 * optimization: in taking the GCD of bignums, reduce the two bignums
2964 to approximately the same size (using Euclid's algorithm) before
2965 applying the more sophisticated binary GCD. (thanks to Juho
2967 * optimization: COUNT on bitvectors now operates word-at-a-time.
2968 * optimization: ASH with a positive, but not necessarily constant,
2969 (leftwards) shift, when in a modular context, is compiled to a
2971 * fixed some bugs revealed by Paul Dietz' test suite:
2972 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2973 if the corresponding argument is NIL.
2974 ** FORMAT directives accepting a minpad parameter treat negative
2976 ** literal commas as character parameters to FORMAT directives are
2978 ** literal spaces directly after ~<Newline> directives within a
2979 format-logical-block (~:< ~@:>) do not induce :FILL-style
2980 conditional newlines.
2981 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2982 as specified: it no longer includes conditional newlines).
2983 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2985 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2986 :PER-LINE-PREFIX argument does not evaluate to a string.
2988 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2989 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2990 the manual for details; for now, package locks can be disabled by
2991 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2992 if no major problems are found then it is likely that they will be
2993 compiled in unconditionally.
2994 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2995 unsupported operators on all platforms. To load a shared library
2996 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2997 object file, link it into a shared library outside of SBCL and
2998 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3000 * bug workaround: ROOM T and the GC were not working together
3001 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3002 reporting facility aren't preserved. That reporting has been
3003 disabled, so now until and unless someone figures out how to make it
3004 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3005 * minor incompatible change: as threatened around sbcl-0.8.0, the
3006 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3007 The symbols are also exported from SB-PCL for backwards
3008 compatibility, but more so than before SB-PCL should be treated as
3009 an implementation-internal package.
3010 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3012 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3013 It is known as of this release not to work on the Alpha, however.
3014 * fixed bug #167: errors signalled due to illegal syntax in method
3015 bodies are now more legible.
3016 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3017 designators and can hence be used with TYPEP.
3018 * fixed bug #333: CHECK-TYPE now ensures that the type error
3019 signalled, if any, has the right object to be accessed by
3020 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3021 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3022 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3024 * fixed bug #334: programmatic addition of slots using specialized
3025 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3026 and :ALLOCATION :CLASS slots.
3027 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3028 float exponents. (rereported by Peter Seibel)
3029 * fixed a bug: #\Space (and other whitespace characters) are no
3030 longer considered to be macro characters in standard syntax by
3031 GET-MACRO-CHARACTER.
3032 * fixed bug: initialization of condition class metaobjects no longer
3033 causes an instance of the condition to be created. (reported by
3035 * fixed bug: it is now possible to have slots such that
3036 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3037 description is neither :INSTANCE nor :CLASS.
3038 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3039 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3040 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3041 non-standard SLOT-DEFINITION-ALLOCATION values.
3042 * fixed bugs: various race conditions handling exiting threads.
3043 CL-PPCRE's thread torture test now passes.
3044 * fixed arguably-a-bug: GC time proportional to number of threads in
3045 system even when most of them are idle
3046 * optimization: improved performance of BIT and SBIT on bit-vectors.
3047 * .fasl file incompatibility: The fasl file version number has
3048 been incremented because of changes associated with package locks.
3050 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3051 * minor incompatible change: the system no longer provides
3052 optimization hints (conditions which are TYPEP
3053 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3054 mode; these hints are still emitted when higher SPEED optimization
3056 * new contrib module: a sampling profiler (profiling by statistical
3057 sampling, rather than by instrumenting functions) is available as
3058 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3059 * the behaviour of the standard function ED is now customizeable by
3060 third parties through a hook variable: see ED's documentation
3061 string for information on the protocol.
3062 * the compiler no longer emits efficiency notes for (FUNCALL X)
3063 when the type of X is uncertain under default optimization
3065 * fixed bug 276: mutating a binding of a specialized parameter to a
3066 method to something that is not TYPEP the specializer is now
3068 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3069 exhibit the required behaviour on the x86 platform. (thanks to
3070 Peter van Eynde, Eric Marsden and Bruno Haible)
3071 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3072 even for difficult arguments. (reported by Peter Graves)
3073 * fixed bug 141a: the backquote printer now descends quoted
3075 * fixed another bug in backquote printing: no more destructive
3076 modification of the form's list structure. (reported by Brian
3078 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3079 move between its address being taken and the call to
3080 interrupt_thread, fixing a crashing race condition.
3081 * the SB-POSIX contrib implementation has been adjusted so that it
3082 no longer exhibits ridiculously poor performance when constructing
3083 instances corresponding to C structs.
3085 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3086 * minor incompatible change: the sb-grovel contrib now treats C
3087 structures as alien (in the sense of SB-ALIEN) objects rather than
3088 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3089 has implications for memory management of client code
3090 (sb-grovel-returned objects must now be manually managed) and for
3091 type safety (alien objects now have full types).
3092 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3093 used to control emission of compiler diagnostics, rather than the
3094 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3095 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3096 quality should be considered deprecated.
3097 * install.sh now installs the user manual as well
3098 * (not quite a new documentable feature, but worth considering in
3099 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3100 beginnings of a semantically meaningful condition hierarchy is
3101 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3103 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3104 designator as the defaults argument.
3105 * fixed bug: Displaced arrays whose displaced-to array has become
3106 too small now cause ARRAY-DIMENSION to signal an error, providing
3107 for safer bounds-checking. (reported by Bruno Haible)
3108 * fixed bug: DEFCLASS slot definitions with identical :READER and
3109 :WRITER names now signal a reasonable error. (reported by Thomas
3111 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3113 * fixed bug: Invalid slot specification errors now print correctly.
3114 (thanks to Zach Beane)
3115 * fixed bug 320: Shared to local slot value transfers in class
3116 redefinitions now happen corrently from superclasses as
3117 well. (reported by Bruno Haible)
3118 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3120 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3121 improper lists correctly. (reported by Bruno Haible)
3122 * fixed bug 313: source-transform for <fun-name> was erroneously
3123 applied to a call of a value of a variable with name <fun-name>.
3124 (reported by Antonio Menezes Leitao)
3125 * fixed bug 307: The obsolete instance protocol ensures that
3126 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3127 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3128 remove dead unknown-values globs from the middle of the stack.
3129 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3130 easier to resume long computations after using *BREAK-ON-SIGNALS*
3131 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3132 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3133 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3134 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3135 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3136 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3138 * fixed a (fairly theoretical) bug in string printing: if
3139 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3140 does not have array-element-type equal to the most general string
3142 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3143 function name. (thanks to Nikodemus Siivola)
3144 * fixed bug: compile-time format string checker failed on
3145 non-closed ~{. (reported by Thomas F Burdick)
3146 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3147 don't warn on legal loop code involving more than one aggregate
3148 boolean. (thanks to Nikodemus Siivola)
3149 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3150 in keyword position to MAKE-PACKAGE was not being reported as
3152 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3153 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3155 * fixed bugs 280 and 312: the checking for multiple definitions in a
3156 file is less likely to become confused by uses of inline
3158 * fixed bug: the #S reader macro performs the keyword coercion
3159 specified for slot names. (reported by Kalle Niemitalo)
3160 * fixed bug: lambda lists may contain symbols whose names start with
3161 & but are not lambda-list-keywords; their occurrence triggers a
3163 * fixed bug 321: define-method-combination argument lambda lists do
3164 not cause invalid code to be generated when &optional or &aux
3165 variables have default values. (reported by Bruno Haible)
3166 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3167 have CLOS classes; this appears also to have fixed reported
3168 instability in stack exhaustion detection.
3169 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3170 MUFFLE-WARNING when no associated restart is present is now
3172 * optimization: rearranged the expansion of various defining macros
3173 so that each expands into only one top-level form in a
3174 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3176 * optimization: used a previously little-used slot in symbols to
3177 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3179 * fixed some bugs revealed by Paul Dietz' test suite:
3180 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3182 ** Fixed an optimization bug related to inheritance of initforms
3183 from local to shared slots.
3184 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3185 ** CAST optimizer forgot to flush argument derived type.
3186 ** print/read consistency on floats is now orders of magnitude
3187 more likely. (thanks also to Bruno Haible for a similar report
3189 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3190 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3191 for objects of type REAL. Make it so.
3192 ** SXHASH is specified (infelicitously) to respect similarity,
3193 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3194 it so. (thanks to Markus Ziegler)
3195 ** on the Alpha, the compiler succeeds in compiling functions
3196 returning a known number of arguments greater than 63.
3197 ** fixed handling of invalid NIL arguments in keyword position
3199 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3201 ** provided a readably-printable representation for RANDOM-STATE
3203 ** ensured that pathnames, where they have a namestring, always
3204 print using #P"..." syntax.
3206 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3207 * Support for the forthcoming 2.0 version of the NetBSD kernel
3208 running on x86 hardware has been added. (thanks to Perry
3209 E. Metzger most immediately, and others for their past work)
3210 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3211 current release version; SBCL's OpenBSD support had been broken
3212 since about the time of OpenBSD's switch to ELF binary format.)
3213 * [placeholder for DX summary]
3214 ** user code with &REST lists declared dynamic-extent, under high
3215 speed or space and low safety and debug optimization policy.
3216 * The manual has been converted to Texinfo format and the debugger
3217 chapter from the cmucl manual has been added.
3218 * A facility has been added to extract documentation strings from
3219 sbcl and store them as Texinfo-formatted snippets for inclusion in
3220 the manual (via Texinfo's @include directive)
3221 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3222 the test case to Dave Roberts)
3223 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3224 pointers. (reported by Sean Ross)
3225 * bug fix: PROFILE output is printed nicely even for large numerical
3226 values. (thanks to Zach Beane)
3227 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3228 greater than 32 handle EOF correctly.
3229 * bug fix: on X86 an immediate argument of the IMUL instruction is
3230 correctly printed in disassembly. (thanks to Lutz Euler)
3231 * bug fix: class slots in redefined classes preserve their old
3232 values. (thanks to Bruno Haible and Nikodemus Siivola)
3233 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3234 succeeds. (reported by Marco Baringer)
3235 * fixed some bugs revealed by Paul Dietz' test suite:
3236 ** READ-SEQUENCE now works on ECHO-STREAMs.
3237 ** RATIONALIZE works more according to its specification. (thanks
3240 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3241 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3242 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3243 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3244 should matter to you only if you rebind the printer control
3245 variables and then find you want different bindings in the
3246 debugger than in the ordinary execution of your program.)
3247 * The runtime build system has been tweaked to support building
3248 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3249 assembler and linker. (thanks to Nikodemus Siivola)
3250 * Unbound, undefined, undeclared variables now trigger full
3251 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3252 more often programmer error than deliberate exploitation of undefined
3254 * optimization: the hash algorithm for strings has changed to one
3255 that is less vulnerable to spurious collisions. (thanks to Juho
3257 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3258 needless bounds checking. (thanks to Juho Snellman)
3259 * optimization: implemented multiplication as a modular
3260 (UNSIGNED-BYTE 32) operation on the PPC backend.
3261 * fixed some bugs revealed by Paul Dietz' test suite:
3262 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3264 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3265 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3266 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3268 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3270 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3272 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3273 their output stream on EOF from read.
3274 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3275 have been read to end-of-file.
3276 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3278 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3279 description of determination of which consecutive characters
3281 ** Printing the "Space" character with escaping on now yields "#\\ ",
3282 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3283 ** Reading floating-point numbers with *READ-BASE* set to a number
3284 less than 10 works correctly.
3285 ** Reading floating-point numbers with *READ-BASE* set to a number
3286 more than 10 works correctly.
3287 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3288 the readtable currently in effect.
3290 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3291 * minor incompatible change: parsing of namestrings on a physical
3292 (Unix) host has changed; numbers after the final #\. in a
3293 namestring are no longer interpreted as a version field. This is
3294 intented to be largely invisible to the user, except that the
3295 meaning of the namestring "*.*.*" has changed: it now refers to a
3296 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3297 should usually be replaced by
3298 (make-pathname :name :wild :type :wild :version :wild)
3299 with the added benefit that this is more likely to be portable.
3300 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3301 option to OPEN now signals an error if the file being opened
3302 exists; this may have an impact on existing code.
3303 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3304 signals received, on the PowerPC platforms (both Linux and
3305 Darwin). (thanks to Pierre Mai for pointing out the location of
3307 * several fixes on OS X: The system now builds and runs cleanly on
3308 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3309 (thanks to Brian Mastenbrook)
3310 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3311 second-resolution: integer multiples of 1/3600 between -24 and 24.
3312 (thanks to Vincent Arkesteijn)
3313 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3314 type when called with 1 argument; PEEK-CHAR checked type of
3315 PEEK-TYPE only after having read first character from a
3316 stream. (reported by Peter Graves)
3317 * bug fix: the garbage collector now has much better locality
3318 behaviour, and in particular no longer treats all memory as being
3319 exhausted when many small objects point to each other in a deeply
3321 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3322 recognized as being TYPEP their class.
3323 * bug fix: the PUSHNEW documentation string has been corrected.
3324 (thanks to Vincent Arkesteijn)
3325 * bug fix: defaulting of the value for the last of an atypically
3326 large number of multiple values being bound was not being
3327 performed correctly on the Alpha or PPC platforms
3328 * optimization: implemented multiplication as a modular
3329 (UNSIGNED-BYTE 32) operation on the x86 backend.
3330 * optimization: SEARCH on simple-base-strings can now be open-coded.
3331 (see also contrib/compiler-extras.lisp for inspiration for
3332 teaching the compiler about the Boyer-Moore algorithm).
3333 * value, returned by MAX (and MIN) called with several EQUALP, but
3334 not EQL, arguments now does not depend on compiler settings.
3335 * fixed some bugs revealed by Paul Dietz' test suite:
3336 ** in stack analysis liveness information is propagated from
3337 non-local entry points.
3338 ** pathwise CAST removing failed when the CAST node did not start
3340 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3341 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3343 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3344 host is already defined.
3345 ** RENAME-FILE works on streams instead of signalling an internal
3347 ** PEEK-CHAR uses the current readtable when determining whether
3348 or not a character is whitespace.
3349 ** MERGE-PATHNAMES handles the case when the pathname does not
3350 specify a name while the default-pathname specifies a version.
3351 ** Pathnames now stand a better chance of respecting print/read
3353 ** Attempting to use standardized file system operators with a
3354 pathname with invalid :DIRECTORY components signals a
3356 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3358 ** DIRECTORY on logical pathnames is more correct.
3359 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3360 signal a TYPE-ERROR if their argument is not a stream.
3361 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3362 designator argument does not designate a stream.
3363 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3364 examining the synonym.
3365 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3367 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3368 element-type larger than ([UN]SIGNED-BYTE 32).
3370 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3371 * When built with the :SB-FUTEX feature, threaded builds now take
3372 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3373 for faster/more reliable mutex and condition variable support.
3374 * Incompatible change (but one you probably shouldn't have been using
3375 anyway): the interface and code for arbitrating between multiple
3376 threads in the same user session has been redesigned.
3377 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3378 error when called without an explicit environment argument.
3379 (thanks to Nikodemus Siivola)
3380 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3381 confused about their position. (thanks to Adam Warner and Gerd
3383 * bug fix: Pretty printing backquoted forms with unquotations in the
3384 argument list position of various code constructs such as LAMBDA
3385 now works correctly. (reported by Paul Dietz)
3386 * bug fix: Pretty printing unquotations no longer loses all
3387 stream position information.
3388 * optimization: performance of string output streams is now less
3389 poor for multiple small sequence writes.
3390 * optimization: performance of CSUBTYPEP in the presence of complex
3391 expressions involving CONS and NOT many times has been improved.
3392 (reported by Paul Dietz)
3393 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3395 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3396 streams for the REPL, for the debugger, and so on. (thanks to
3398 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3399 * fixed some bugs revealed by Paul Dietz' test suite:
3400 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3401 is ignored if it is too small, rather than propagating through
3402 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3403 ** extremely complex negations of CONS types were not being
3404 sufficiently canonicalized, leading to inconsistencies in
3406 ** VALUES tranformer lost derived type.
3408 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3409 * fixed a bootstrapping bug: the build process no longer assumes
3410 that the various BOOLE-related constants have the same value in
3411 host and target lisps. (noted by Paul Dietz' test suite on an
3412 SBCL binary built from CLISP)
3413 * The system can now be dynamically linked on the MIPS platform,
3414 which enables dynamic loading of foreign code from Lisp. (thanks
3415 to Ralf Baechle for discussions on the MIPS ABI)
3416 * The system now records debugging information for its own source
3417 files in a filesystem-position-independent manner, relative to
3418 the "SYS" logical host.
3419 * fixed a compiler bug: MV-LET convertion did not check references
3420 to the "max args" entry point. (reported by Brian Downing)
3421 * tweaked disassembly notes to be less confident about proclaiming
3422 some instruction as an LRA. (thanks to Brian Downing)
3423 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3424 now each have their own history, command character, and other
3425 characteristics. (thanks to David Lichteblau)
3426 * fixed some bugs revealed by Paul Dietz' test suite:
3427 ** compiler failure in compiling LOGAND expressions including a
3429 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3430 shift greater than 32.
3431 ** FLUSH-DEST did not mark blocks for type check regeneration.
3432 ** HANDLER-CASE failed to accept declarations in handler clauses
3433 in some circumstances.
3435 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3436 * New code in contrib/sb-introspect (still probably not entirely
3437 stable yet) provides some support for smart Lisp development
3438 environments like SLIME.
3439 * The conditions signalled for errors occurring when loading .fasl
3440 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3441 in a way which should help ASDF recover gracefully.
3442 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3443 stuff has been cleaned up. If you code contrib/ stuff, this might
3444 affect you, and you can look at contrib/README, contrib/STANDARDS,
3445 and/or the 0.8.4.27 diff to check.
3446 * In full calls the compiler now does not generate checks for declared
3447 argument types for all arguments.
3448 * various threading fixes
3449 ** and some experimental patches which didn't make it into
3450 the main tree for this release, but which are shipped in
3451 contrib/experimental-thread.patch as a possible fix for some
3452 failures (deadlock, spinning...) in GC-intensive multithreaded
3454 * fixed PPC build problem (source code incompatibility of different
3455 library versions): added offsetof() hackery which attempts to divine
3456 where glibc maintainers put uc_mcontext today
3457 * fixed bug 282: compiler does not trust type assertions while passing
3458 arguments to a full call.
3459 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3460 &OPTIONAL VALUES type parameter.
3461 * fix bug 214: algorithm for noting rejected templates is now more
3462 similar to that of template seletion. (also reported by rydis on
3464 * fixed bug 141b: printing backquoted information readably and prettily
3465 inserts a space where necessary.
3466 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3467 (CHARACTER 10) are now reported as errors, rather than propagated
3468 as unknown types. (reported by piso on #lisp)
3469 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3470 with values NIL and :ERROR. (thanks to Milan Zamazal)
3471 * fixed bug 191c: CLOS now does proper keyword argument checking as
3472 described in CLHS 7.6.5 and 7.6.5.1.
3473 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3474 longer raise an error; further, using a list as a for-as-arithmetic
3475 counter now raises a meaningful error.
3476 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3477 now understood by sequence creation functions such as MAKE-SEQUENCE
3479 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3480 a STRING-INPUT-STREAM.
3481 * compiler enhancement: SIGNUM is now better able to derive the type
3483 * type declarations inside WITH-SLOTS are checked. (reported by
3485 * fixed some bugs revealed by Paul Dietz' test suite:
3486 ** incorrect optimization of TRUNCATE for a positive first
3487 argument and negative second.
3488 ** compiler failure in let-convertion during flushing dead code.
3489 ** compiler failure while deriving type of TRUNCATE on an
3490 interval, containing 0.
3491 ** ASH of a negative bignum by a negative bignum count now returns
3493 ** intersection of CONS types now canonicalizes properly, fixing
3494 inconsistencies in SUBTYPEP.
3496 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3497 * incompatible change: The --disable-debugger command line
3498 option now clobbers the debugger at a more fundamental
3499 level, by redefining #'INVOKE-DEBUGGER instead of by
3500 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3501 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3502 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3503 enter the debugger REPL and then suffer recursive errors
3504 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3505 while under the new system, BREAK in --disable-debugger mode
3506 terminates the system just as an unhandled error would.
3507 * fixed compiler performance when processing loops with a step >1;
3508 * bug fix: DOCUMENTATION now retrieves generic function
3509 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3510 support has been systematized, and now supports the methods
3511 specified by ANSI, along with a default method and a method for
3512 slot documentation. (reported by Nathan Froyd)
3513 * bug fix: effective methods associated with a generic function are
3514 no longer cached over a change of that generic function's method
3515 combination. (reported by Andreas Fuchs)
3516 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3517 names a non-existent directory. (thanks to Andreas Fuchs)
3518 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3519 the PPC platform, lead to stack corruption; this has been fixed.
3520 (reported by Rainer Joswig)
3521 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3522 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3523 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3524 arithmetic in general, is now much more reliable on the PPC
3526 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3527 platform now returns the right answer.
3528 * optimization: restored some effective method precomputation in
3529 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3530 precomputation is now tunable.
3531 * optimization: compiler-internal data structure use has been
3532 reviewed, and changes have been made that should improve the
3533 performance of the compiler by about 20%.
3534 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3535 simple-base-strings and simple-bit-vectors is improved.
3536 * optimization: the optimization of 32-bit logical and arithmetic
3537 functions introduced in version 0.8.3 on the x86 has been
3538 implemented on the mips, ppc and sparc platforms; an
3539 implementation of the same facility, but for 64-bit arithmetic,
3540 has been added for the alpha.
3541 * microoptimization: the compiler is better able to make use of the
3542 x86 LEA instruction for multiplication by constants.
3543 * bug fix: in some situations compiler did not report usage of
3544 generic arithmetic in (SPEED 3) policy.
3545 * bug 145b fix: compiler used wrong type specifier while converting
3546 MEMBER-types to numeric.
3547 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3549 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3550 index argument now works properly on the Alpha platform.
3551 * bug fix: floating point exception treatment on the Alpha platform
3553 * bug fix: FILE-POSITION works much better on string input and
3554 output streams. (thanks to Nikodemus Siivola)
3555 * bug fix: many threading/garbage collection symptoms sorted.
3556 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3557 might be pseudo-atomic.
3558 * internal change: Stopping for GC is now done with signals not
3559 ptrace. GC is now done in whichever thread wanted it, instead of
3561 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3563 * bug fix: result form in DO is not contained in the implicit
3565 * incompatible change: ICR structure is changed; the value part of
3566 CONTINUATION is now called LVAR; corresponding functions are
3567 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3568 * added type deriver for ISQRT (thanks to Robert E. Brown).
3569 * bug fix: better support for loading from the command line when an
3570 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3572 * fixed some bugs revealed by Paul Dietz' test suite:
3573 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3574 ** ROUND and FROUND now give the right answer when given very
3575 small float arguments.
3576 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3578 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3579 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3580 ** LCM should return a non-negative integer.
3581 ** PARSE-INTEGER returned the index of a terminator instead of the
3582 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3583 ** PARSE-INTEGER returned an incorrect index being applied to a
3585 ** LCM with two arguments of 0 returns 0 rather than signalling
3587 ** unsigned addition of a 32-bit constant with the high bit set no
3588 longer causes an internal compiler error on the x86.
3589 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3590 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3591 with negative last argument.
3592 ** byte specifiers with zero size and position no longer cause
3593 an error during type derivation.
3594 ** bignum multiplication on the Alpha platform now returns the
3596 * porting: The system now builds on SuSE AMD64, although it still
3597 generates a 32-bit binary.
3598 * .fasl file incompatibility: The fasl file version number has
3599 been incremented (because of the changes to internal compiler
3600 data structures referred to above).
3602 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3603 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3604 more accurately, on the Darwin kernel running on PowerPC hardware.
3605 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3606 * Compiler code deletion notes now signal a condition of type
3607 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3608 an associated MUFFLE-WARNING restart.
3609 * The compiler now performs limited argument count validation of
3610 constant format strings in FORMAT, and where appropriate in ERROR,
3611 CERROR and WARN. (thanks to Gerd Moellmann)
3612 * New ASDF-INSTALL contrib can be used for automatic download and
3613 installation of third-party Lisp code from CCLAN or other sites
3615 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3616 which forces another thread to execute a function supplied by the
3618 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3619 now accept and act upon their :ELEMENT-TYPE keyword argument.
3620 (reported by Martin Atzmueller, Edi Weitz)
3621 * bug fix: FILE-POSITION now accepts position designators up to
3622 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3623 is the greater. (thanks to Patrik Nordebo)
3624 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3625 Kalle Olavi Niemitalo)
3626 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3627 printable. (reported by Eric Marsden)
3628 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3629 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3630 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3631 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3632 (thanks to Stig Sandoe)
3633 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3634 UNREAD-CHAR now correctly includes the unread character in the
3635 target sequence. (thanks to Gerd Moellmann)
3636 * bug fix in threaded builds: the system can now be suspended and
3637 resumed by shell job control with minimal disruption.
3638 * bug fixes in times and timezones >2038AD
3639 * better handling of "where is GNU make?" problem in build scripts
3640 (thanks to Nikodemus Siivola)
3641 * new optimization: inside a named function any reference to a
3642 function with the same name is considered to be a self-reference;
3643 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3644 optimization quality.
3645 * new optimization on x86: logical functions and + now have
3646 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3647 used when the result is truncated to 32 bits.
3648 * VALUES declaration is partially enabled.
3649 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3650 * fixed some bugs revealed by Paul Dietz' test suite:
3651 ** The system now obeys the constraint imposed by
3652 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3653 types form a lattice under type intersection.
3654 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3655 ** ASSOC now ignores NIL elements in an alist.
3656 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3657 and (1+ MOST-POSITIVE-FIXNUM) answers.
3658 ** The addition of a method with invalid qualifiers to a generic
3659 function does not cause an error to be signalled immediately;
3660 a warning is signalled, and the error is generated only on
3661 calling the generic function.
3662 * changed .fasl file version number, in part to add type codes for
3663 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3664 obscure ANSI requirements
3666 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3667 * fixed bug 148: failure to inline-expand a local function left
3668 garbage, confusing the compiler.
3669 * fixed bugs 3cd: structure slot readers perform type check if the
3670 slot can have an invalid value (i.e. it is either not initialized
3671 or can be written with a less specific slot writer).
3672 * bug fix: the compiler now traps array references to elements off
3673 the end of an array; previously, the bounds checking in some
3674 circumstances could go off-by-one.
3675 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3677 * type declarations for array element types now obey the description
3678 on the CLHS page "Declaration TYPE", as per discussions on
3679 sbcl-help around 2003-05-08. This means that a declaration
3680 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3681 declaration, all references to BAR will be asserted or assumed
3682 (with THE, so dependent on compiler policy) to involve objects of
3683 type FOO. Note that no such declaration is implied in
3684 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3685 * declared types of functions from the "Conditions"
3686 chapter. (reported by Paul Dietz)
3687 * bug fix: CERROR accepts a function as its first argument.
3688 * bug fix: NTH an NTHCDR accept a bignum as index
3689 arguments. (reported by Adam Warner)
3690 * optimization: character compare routines now optimize comparing
3691 against a constant character. (reported by Gilbert Baumann)
3692 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3693 argument now works properly on the MIPS platform.
3694 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3695 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3696 declared to have a functional type, does not cause an error
3698 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3699 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3700 * fixed bug: if last continuation of a deleted block has a
3701 destination, this destination should be deleted too. (reported by
3703 * fixed a bug in the bootstrap process: the host compiler's values
3704 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3705 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3706 test case from Patrik Nordebo)
3707 * improved the ability of the disassembler on the PPC platform to
3708 provide helpful disassembly notes.
3709 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3710 the class in more cases than previously.
3711 * bug fix: FILE-POSITION now understands :START and :END for
3712 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3713 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3714 8) data. (thanks to David Lichteblau)
3715 * bug fix: it is possible to add a method to a generic function
3716 without lambda list.
3717 * bug fix: reader failed to signal END-OF-FILE inside an
3718 object representation. (reported by Nikodemus Siivola)
3719 * fixed some bugs revealed by Paul Dietz' test suite:
3720 ** LAST and [N]BUTLAST should accept a bignum.
3721 ** condition slot accessors are methods.
3722 ** (VECTOR NIL) is a subtype of STRING.
3724 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3725 * minor incompatible change: some nonsensical specialized lambda
3726 lists (used in DEFMETHOD) which were previously ignored now signal
3728 * minor incompatible change: the system is now aware of the types of
3729 variables in the COMMON-LISP package, and will signal errors for
3730 most violations of these type constraints (where previously they
3731 were silently accepted).
3732 * minor incompatible change: COMPILE-FILE now uses the freedom
3733 afforded (ANSI 3.2.2.3) to use derived function types for
3734 functions defined in the same file. This also permits the system
3735 to warn on static type mismatches and function
3736 redefinition. (Currently it does not work with high DEBUG level.)
3737 * minor incompatible change: VALUES declaration is disabled.
3738 * When issuing notes, the compiler now signals a condition of type
3739 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3740 restart for use in user handlers. It is expected that the
3741 COMPILER-NOTE condition will eventually become a condition
3742 supertype to a hierarchy of note types, which will then be
3743 handleable in a similar fashion. However, at the moment, no such
3744 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3745 but it's an implementation detail, not a classification for the
3747 * Changes in type checking closed the following bugs:
3748 ** type checking of unused values (192b, 194d, 203);
3749 ** template selection based on unsafe type assertions (192c, 236);
3750 ** type checking in branches (194bc).
3751 * A short form of VALUES type specifier has ANSI meaning (it has
3752 increased the number of situations when SBCL cannot perform type
3754 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3755 keywords or constants is permissible.
3756 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3757 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3758 classes. (thanks to Antonio Martinez)
3759 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3760 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3761 argument to a pretty-print stream. Instead, it leaves any such
3762 operations to DESCRIBE-OBJECT methods.
3763 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3765 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3766 lambda lists. (thanks to David Lichteblau)
3767 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3768 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3769 (thanks to Gerd Moellmann)
3770 * fixed bug 246: increased compilation speed of long
3771 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3773 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3775 * DEFCONSTANT now throws a condition of type
3776 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3777 constant to a non-EQL value; CONTINUE and ABORT restarts
3778 respectively change and preserve the value.
3779 * fixed bug 63: The code walker, part of the implementation of CLOS,
3780 is now better at handling symbol macros.
3781 * bug fix: There is no longer an internal implementation type named
3782 CL:LENGTH. (reported by Raymond Toy)
3783 * bug fix: In macro-like defining macros/special operators the
3784 implicit block does not enclose the lambda list.
3785 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3786 enclosed in parentheses) are not suitable as type specifiers, and
3787 their use properly signals an error now.
3788 * bug fix: An argument count mismatch for a type specifier in code
3789 being compiled no longer causes an unhandled error at compile
3790 time, but signals a compile-time warning.
3791 * fixed simple vector readable printing
3792 * bug fix: DESCRIBE takes more care over whether the class
3793 precedence list slot of a class is bound before accessing it.
3794 (reported by Markus Krummenacker)
3795 * bug fix: FORMATTER can successfully compile pretty-printer format
3796 strings which use variants of the ~* directive inside.
3797 * bug fix: SEARCH now applies its TEST predicate to the elements of
3798 the arguments in the correct order. (thanks to Wolfhard Buss)
3799 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3800 in type inference. (thanks to Robert E. Brown)
3801 * bug fix: Reading in symbols with an explicit package name of ""
3802 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3803 * fixed some bugs revealed by Paul Dietz' test suite:
3804 ** NIL is now allowed as a structure slot name.
3805 ** Arbitrary numbers, not just REALs, are allowed in certain
3806 circumstances in LOOP for-as-arithmetic clauses.
3807 ** Multiple class redefinitions before slot access no longer
3808 causes a type error.
3809 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3810 association between the name and a class.
3811 ** Generic functions with non-standard method-combination and over
3812 five methods all of which return constants no longer return NIL
3813 after the first few invocations. (thanks to Gerd Moellmann)
3814 ** CALL-NEXT-METHOD with no arguments now passes the original
3815 values of the arguments, even in the presence of assignment.
3816 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3818 ** DISASSEMBLE works with closures and funcallable instances.
3819 ** ADD-METHOD now returns the generic function, not the new method.
3820 ** FIND-METHOD signals an error if the lengths of the specializers
3821 is incompatible with the generic function, even if the ERRORP
3823 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3824 which its argument is a member.
3825 ** DEFCLASS only redefines the class named by its class-name
3826 argument if that name is the proper name of the class;
3827 otherwise, it creates a new class.
3828 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3829 of the UNBOUND-SLOT condition to the name of the slot.
3830 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3831 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3832 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3833 SLOT-MAKUNBOUND in the specified fashion.
3835 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3836 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3837 cross-compilation host. As a consequence, we can now bootstrap our
3838 way up to SBCL starting with a bare gcc toolchain and human-readable
3839 source code (first the source to CLISP, then the source to SBCL).
3840 * A contributed module containing a partial implementation of the
3841 simple-streams interface has been included. (thanks to Rudi
3843 * A contributed module implementing the RFC1321 Message Digest
3844 Algorithm, known as MD5, has been included.
3845 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3846 no longer has any effect, as the code controlled by this feature
3847 has been deleted. (As far as we know, no-one has ever built using
3848 this feature, and its semantics were confused in any case).
3849 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3850 work on conditions (as required by the ANSI specification),
3851 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3852 expected behaviour on conditions. Users should note, however,
3853 that such behaviour is not required by the ANSI specification,
3854 and so use of this behaviour may render their code unportable.
3855 * fixed some bugs revealed by Paul Dietz' test suite:
3856 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3858 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3859 ** SXHASH on condition objects no longer returns NIL.
3860 ** :ALLOCATION :CLASS slots are better treated; their values are
3861 updated on class redefinition, and initforms inherited from
3862 superclasses are applied.
3863 ** REMOVE-METHOD returns its generic function argument even when
3864 no method was removed.
3865 ** SHARED-INITIALIZE now initializes the values of the requested
3866 slots, including those with :ALLOCATION :CLASS.
3867 ** ALLOCATE-INSTANCE now works on structure classes defined via
3868 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3870 ** SLOT-EXISTS-P now works on conditions, as well as structures
3872 ** MAKE-LOAD-FORM now has the required methods on
3873 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3874 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3875 keyword, and now implements the SLOT-NAMES argument.
3876 ** methods with &OPTIONAL arguments no longer allow too many
3877 arguments to be passed in the call without error.
3878 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3879 option is consistent with the required arguments of the generic
3880 function lambda list.
3881 * bug fix: REQUIRE accepts a string designator. (Thanks to
3883 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3884 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3885 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3886 * bug fix: The compiler now checks for duplicated variables in macro
3888 * bug fix: SETQ on globals returns the correct value.
3889 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3890 not a COMPILER-ERROR (followed by some other strange error on
3891 choosing the CONTINUE restart).
3892 * bug fix: make.sh and friends are now more consistent in the way that
3893 they look for GNU "make".
3895 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3896 * experimental native threads support (on x86 Linux >=2.4 only).
3897 This is not compiled in by default: you need to add :SB-THREAD to
3898 the target features. See the "Beyond ANSI" chapter of the manual
3900 * fix for longstanding nonANSIism: The old distinction between
3901 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3902 The return value from CL:FIND-CLASS is now a CLOS class, and
3903 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3904 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3905 * An interface to the MetaObject Protocol, as described in Kiczales,
3906 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3907 MIT Press, 1991, is available from the SB-MOP package.
3908 * incompatible change: the SB-PCL package should now be considered
3909 a private implementation detail, and no longer a semi-private MOP
3911 * minor incompatible change: due to rearrangement for threads, the
3912 control stack and binding stack are now allocated at arbitrary
3913 addresses instead of being hardcoded per-port. Users affected by
3914 this probably have to be doing advanced things with shared
3915 libraries, and will know who they are.
3916 * minor incompatible change: Previously, all --eval forms used were
3917 processed with READ before any of them were processed with EVAL.
3918 Now each --eval form is processed with both READ and EVAL before
3919 the next --eval form is processed. (Thus package operations like
3920 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3921 work as the user might reasonably expect.)
3922 * minor incompatible change: *STANDARD-INPUT* is now only an
3923 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3925 * minor incompatible change: Y-OR-N-P is now character-oriented,
3926 not line oriented. Also, YES-OR-NO-P now works without errors.
3927 (thanks to Antonio Martinez)
3928 * sb-aclrepl module improvements: an integrated inspector, added
3929 repl features, and a bug fix to :trace command.
3930 * Known functions, which cannot be open coded by the backend, are
3931 considered to be able to check types of their arguments. (fixing
3932 a bug report by Nathan J. Froyd)
3933 * fixed a bug in computing method discriminating functions: It is
3934 now possible to define methods specialized on classes which have
3935 forward-referenced superclasses. (thanks to Gerd Moellmann)
3936 * fixed evaluation order in optional entries (reported by Gilbert
3938 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3939 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3940 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3941 required-by-AMOP NAME argument, as well as CLASS and
3942 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3943 * fixed bug 20: DEFMETHOD can define methods using names that are
3944 not the proper names of classes to designate class specializers.
3945 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3946 Unix file descriptors, instead of blowing up. (thanks to Antonio
3948 * Garbage collection refactoring: user-visible change is that a
3949 call to the GC function during WITHOUT-GCING will not do garbage
3950 collection until the end of the WITHOUT-GCING. If you were doing
3951 this you were probably losing anyway.
3952 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3953 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3954 TYPEP the latter but not the former.
3955 * The compiler issues a full WARNING for calls to undefined functions
3956 with names from the CL package.
3957 * MAP-INTO for a vector destination is open coded. (reported by
3958 Brian Downing on c.l.l)
3959 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3960 documentation string.
3961 * fixed some bugs revealed by Paul Dietz' test suite:
3962 ** COPY-ALIST now signals an error if its argument is a dotted
3964 ** Condition slots are now accessed more correctly in the presence
3965 of multiple initargs for a given slot.
3966 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3967 exclude restarts of the same name associated with a different
3969 ** DEFCLASS of forward-referenced classes with another
3970 forward-referenced class in the superclasses list no longer
3972 ** Condition slots are now initialized once each, not multiple
3973 times. (thanks to Gerd Moellmann)
3974 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3976 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3977 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3978 arguments contain duplicated elements.
3979 ** RESTART-CASE understands local macros.
3980 ** RESTART-CASE associates exactly its own restarts with a condition.
3981 ** ENDP in safe mode checks its argument to be of type LIST.
3982 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3983 in question is unbound.
3984 ** Optimized MAKE-INSTANCE functions no longer cause internal
3985 assertion failures in the presence of duplicate initargs.
3986 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3987 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3988 propagated even in the ctor optimized implementation of
3990 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3992 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3993 * a better implementation of SXHASH on (simple) bit vectors,
3994 measured both in execution speed and in distribution of results
3995 over the positive fixnums, has been installed. Likewise, a better
3996 implementation of EQUAL for simple bit vectors is now available.
3997 * fixed CEILING optimization for a divisor of form 2^k.
3998 * fixed bug 240 (emitting extra style warnings "using the lexical
3999 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4000 by Antonio Martinez)
4001 * fixed SXHASH, giving different results for NIL depending on type
4002 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4003 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4004 variable. (found by Rolf Wester)
4005 * SBCL does not ignore type declarations for special
4006 variables. (reported by rif on c.l.l 2003-03-05)
4007 * some bug fixes in contrib/sb-aclrepl/
4008 * fixed some bugs revealed by Paul Dietz' test suite:
4009 ** a bug in the CONS type specifier, whereby the CAR and CDR
4010 types got intertwined, has been fixed;
4011 ** the type system is now able to reason about the interaction
4012 between INTEGER and RATIO types more completely;
4013 ** APPEND, [N]REVERSE and NRECONC check that those their
4014 arguments, which must be proper lists, are really so;
4015 ** An array specialized to be unable to hold elements has been
4016 implemented, as required -- yes, really -- by ANSI;
4017 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4018 on malformed property lists;
4020 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4021 * incompatible packaging change: in line with Unix convention,
4022 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4023 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4024 * REQUIRE and PROVIDE are now optionally capable of doing something
4025 useful. See the documentation string for REQUIRE.
4026 * infrastructure for a managed SBCL contrib system: contributed
4027 modules in this release include:
4028 ** the ASDF system definition facility;
4029 ** an interface to the BSD Sockets API;
4030 ** an ACL-like convenience interface to the repl;
4031 (thanks to Kevin Rosenberg)
4032 ** an implementation of ROTATE-BYTE, with efficient implementation
4034 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4035 gives a closer approximation to the right answer than previously.
4036 (thanks to Raymond Toy)
4037 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4038 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4039 optional environment arguments, as required by ANSI.
4040 * fixed bugs in other functions taking environment objects, allowing
4041 calls with an explicit NIL environment argument to be compiled
4043 * fixed bug 228: primary return values from
4044 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4045 COMPILE or FUNCTION.
4046 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4047 :TYPE will no longer signal errors on innocuous objects.
4048 * fixed bug 231b: SETQ is better at respecting type declarations in
4049 the lexical environment.
4050 * fixed a bug in DEFCLASS: classes named by symbols with no or
4051 unprintable packages can now be defined.
4052 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4053 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4054 * fixed compiler failure related to checking types of functions.
4055 (reported by Robert E. Brown)
4056 * the compiler is now much more consistent in its error-checking
4057 treatment of bounding index arguments to sequence functions: in
4058 (SAFETY 3) code, errors will be signalled in almost all cases if
4059 invalid sequence bounding indices are passed to functions defined
4060 by ANSI to operate on sequences.
4061 * fixed a bug in the build procedure: documentation of SBCL-specific
4062 packages is now preserved and available in the final Lisp image.
4063 * lifted FDEFINITION lookup out of loops in the implementation of
4064 many list operations. (thanks to Robert E. Brown)
4065 * fixed a bug in the reader: the #n# reader macro now works for
4066 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4067 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4068 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4069 E. Brown and Tony Martinez respectively)
4070 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4071 SLOT-BOUNDP: in particular, it is now able to optimize them much
4072 better, and is now not vulnerable to having packages renamed.
4073 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4074 always called when a slot is not present in an instance. (thanks
4076 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4077 longer signal an error on unreading a character following EOF on
4078 the previous constituent stream. (thanks to Tony Martinez)
4079 * fixed some bugs revealed by Paul Dietz' test suite:
4080 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4081 not just nonnegative fixnums;
4082 ** the logical bit-array operators such as BIT-AND now accept an
4083 explicit NIL for their "opt-arg" argument (to indicate a
4084 freshly-consed result bit-array);
4085 ** ELT now signals an error on an invalid sequence index in safe
4087 ** the type system is now cleverer about negations of numeric
4088 types, and consequently understands the BIGNUM and RATIO types
4090 ** the type system is now cleverer about the interaction between
4091 INTEGER and RATIO types: while bugs still remain, many more
4092 cases are accurately computed;
4093 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4094 if it is in the last clause;
4095 ** CONSTANTLY now correctly returns a side-effect-free function in
4097 ** DECLARE is no longer treated as a special-operator; in
4098 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4099 * incremented fasl file version number due to the change in the
4100 DEFSTRUCT-SLOT-DESCRIPTION structure.
4102 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4103 * minor incompatible change: code processed by the "interpreter" or
4104 EVAL now has a compilation optimization policy of (DEBUG 2)
4105 (changed from (DEBUG 1)) to improve debuggability of interactive
4106 development, and to allow the use of the debug RETURN command in
4108 * an experimental implementation of the RETURN command for the
4109 debugger has been included. (thanks to Frederik Kuivinen)
4110 * fixed bug 62: constraints were not propagated into a loop.
4111 * fixed bug in embedded calls of SORT (reported and investigated by
4113 * fixed some bugs revealed by Paul Dietz' test suite:
4114 ** printing and reading of arrays with some dimensions having
4115 length 0 (thanks to Gerd Moellmann);
4116 ** BOA constructor with &AUX argument without a default value does
4117 not cause a type error;
4118 ** CONSTANTP now returns true for all self-evaluating objects.
4120 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4121 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4122 accessors that are related by inheritance, as specified in the
4123 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4124 Valtteri Vuorikoski)
4125 * The compiler is now able to inline functions that were defined in
4126 a complex lexical environment (e.g. inside a MACROLET).
4127 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4129 * Support for the upcoming FreeBSD-5.0 release has been included.
4130 (thanks to Dag-Erling Smorgrav)
4131 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4132 effect when it is not in a toplevel context.
4133 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4134 stand a better chance of being correct. (thanks to Gerd
4136 * fixed bug in COERCE, which now signals an error on coercing a
4137 rational to a bounded real type which excludes the expected
4139 * The compiler is now able to derive types more accurately from the
4140 COERCE and COMPILE functions.
4141 * fixed bug 223: functional binding is considered to be constant
4142 only for symbols in the CL package.
4143 * fixed bug 231: SETQ did not check the type of a variable being set
4144 (reported by Robert E. Brown)
4145 * A new optimization for MAKE-INSTANCE has been included, fixing
4146 various bugs (including relating to :ALLOCATION :CLASS slots and
4147 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4149 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4150 ** As required by ANSI, LOOP now disallows anonymous collection
4151 clauses such as COLLECT I in conjunction with aggregate boolean
4152 clauses such as THEREIS (= I 1);
4153 ** LOOP now signals an error when any variable is reused in the
4154 same loop (including the potentially useful construct analogous
4155 to WITH A = 1 WITH A = (1+ A);
4156 ** IT is only a special loop symbol within the first clause of a
4157 conditional loop clause;
4158 ** LOOP with a typed iteration variable over a hashtable now
4159 signals a type error iff it should.
4160 * fixed some other bugs revealed by Paul Dietz' test suite:
4161 ** FILE-STREAM now names the class previously known as FD-STREAM;
4162 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4163 argument) no longer signals an error;
4164 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4165 of the slot symbol, rather than using the current package
4166 ((:CONC-NAME "") continues to intern the slot's name in the
4168 * incremented fasl file version number, because of the incompatible
4169 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4170 of the new implementation of DEFINE-COMPILER-MACRO.
4172 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4173 * Support for building SBCL for MIPS platforms running in
4174 little-endian mode has now been checked in, and basic
4175 functionality on said platforms verified.
4176 * minor incompatible change: PCL now records the pathname of a file
4177 in which methods and the like are defined, rather than its
4179 * minor incompatible change: TRUENAME now considers the truename of
4180 a file naming a directory to be the pathname with :DIRECTORY
4181 component indicating that directory.
4182 * minor incompatible change: a NAMED clause in the extended form of
4183 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4184 reason for the previous behaviour is unclear.
4185 * more systematization and improvement of CLOS and MOP conformance
4186 in PCL (thanks to Gerd Moellman and Pierre Mai):
4187 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4189 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4190 primary methods with no specializers;
4191 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4193 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4194 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4195 FORWARD-REFERENCED-CLASSes; error reporting on
4196 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4198 ** SXHASH on CLOS instances now uses a slot internal to the
4199 instance to return different numbers on distinct instances,
4200 while preserving the same return value through invocations of
4202 ** DEFMETHOD signals errors when methods with longer incongruent
4203 lambda lists are added to generic functions;
4204 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4205 CLASS, as specified in AMOP;
4206 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4207 on the order returned by the primary method for classes of
4208 class STANDARD-CLASS;
4209 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4210 * fixed some bugs shown by Paul Dietz' test suite:
4211 ** DOLIST puts its body in TAGBODY;
4212 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4214 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4215 value producing form;
4216 ** if more variables are given to PROGV than values, extra
4217 variables are bound and made to have no value;
4218 ** NSUBSTITUTE on list arguments gets the right answer with
4220 ** ELT signals an error of type TYPE-ERROR when the index argument
4221 is not a valid sequence index;
4222 ** LOOP signals (at macroexpansion time) an error of type
4223 PROGRAM-ERROR when duplicate variable names are found;
4224 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4225 ** FUNCALL of special-operators now cause an error of type
4227 ** PSETQ now works as required in the presence of side-effecting
4228 symbol-macro places;
4229 ** NCONC accepts any object as its last argument;
4230 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4232 ** loop-for-as-package does not require a package to be explicitely
4234 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4236 * fixed bug 166: compiler preserves "there is a way to go"
4237 invariant when deleting code.
4238 * fixed bug 172: macro lambda lists with required arguments after
4239 &REST arguments now cause an error to be signalled. (thanks to
4241 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4242 bug. (thanks to Matthew Danish)
4243 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4245 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4246 arguments are lexically rebound. (thanks to Gerd Moellmann and
4248 * fixed bug 194: error messages are now more informative when there
4249 is no primary method applicable in a call to a generic
4250 function. (thanks to Gerd Moellmann)
4251 * fixed bug in command line argument checking (thanks to Julian
4253 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4254 (thanks to Matthew Danish)
4255 * incremented fasl file version number, because of the
4256 SXHASH-related changes in the layout of CLOS data structures
4258 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4259 * minor incompatible change: The runtime (the Unix executable named
4260 "sbcl") is now much pickier about the .core files it will load.
4261 Essentially it now requires .core files to descend from the same
4262 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4263 as the runtime does. (The intent is to prevent the crashes which
4264 can occur, and which can even be reported as mysterious failures,
4265 when people patch the sources or change the build parameters
4266 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4267 sbcl and .core files.)
4268 * fixed bug: VALUES-LIST is no longer optimized away.
4269 * fixed bug 142: The FFI conversion of C string values to Lisp
4270 string values no longer conses excessively. (thanks to Nathan
4271 Froyd porting Raymond Toy's fix to CMU CL)
4272 * began to systematize and improve MOP conformance in PCL (thanks to
4273 Nathan Froyd, Gerd Moellman and Pierre Mai):
4274 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4276 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4277 ** FINALIZE-INHERITANCE is now called on class finalization;
4278 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4279 argument precedence order.
4280 * fixed bug 202: The compiler no longer fails on functions whose
4281 derived types contradict their declared type.
4282 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4283 so it can be non-toplevel.
4284 * The fasl file version number has changed (because of the new
4285 implementation of DEFMACRO).
4286 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4287 safe code, that any length requirement by their type-specifier
4288 argument is valid. The exceptions to this are described in bug
4290 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4291 functions now check the types of their inputs as required by ANSI.
4292 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4293 introduced symbol is DECLAREd to be SPECIAL.
4294 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4295 * fixed bug: :COUNT argument to sequence functions may be negative
4296 * fixed bug: body of DO-SYMBOLS may contain declarations
4297 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4298 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4299 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4300 symbol macro only once
4301 * fixed printing of call frame when argument list is unavailable
4302 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4303 * compiler no longer signals WARNING on unknown keyword
4306 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4307 * A beta-quality port to the mips architecture running Linux,
4308 based on the old CMUCL backend, has been made. It has been tested
4309 on a big-endian kernel, and works sufficiently well to be able to
4310 rebuild itself; it has not been tested in little-endian mode.
4311 * fixed an inconsistency between gencgc.c and purify.c which made
4312 dumping/loading .core files unreliable
4313 * fixed bug 120a: The compiler now deals correctly with IFs where
4314 the consequent is the same as the alternative, instead of
4315 misderiving the return type. (thanks to Alexey Dejneka)
4316 * fixed bug 113: Logical pathnames are now dumpable (the logical
4317 host is resolved at load-time, throwing an error if it is not
4319 * fixed bug 174: FORMAT's error message is slightly clearer when a
4320 non-printing character is used in a format directive.
4321 * fixed several bugs in compiler checking of type declarations, i.e.
4322 violations of the Python "declarations are assertions" principle
4323 (thanks to Alexey Dejneka)
4324 * fixed several bugs in PCL's error checking (thanks to Gerd
4326 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4328 * fixed bug in compilation of functions as first class values
4329 (thanks to Antonio Martinez-Shotton)
4330 * The compiler's handling TYPE-ERRORs which it can prove will
4331 inevitably happen at runtime has been cleaned up and corrected
4332 in several ways. (thanks to Alexey Dejneka)
4333 * improved argument type checking for various basic arithmetic
4334 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4335 lavished on them in the past that they can be compiled in many
4336 ways in different special cases
4337 * fixed bug 181: compiler checks validity of user supplied type
4339 * cleaned up code flushing in optimization: Function calls which
4340 should signal errors for safety purposes (e.g. which ANSI says
4341 should signal errors when their arguments are of incorrect type)
4342 are no longer optimized away.
4343 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4344 * incremented fasl file version number, because changes in the
4345 implementation of sequence functions like COERCE caused
4346 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4347 in old inline expansions) to become undefined. (Actually these
4348 changes were later undone, so we might very well be binary
4349 compatible with 0.7.7 after all, but leaving the version number
4350 incremented seemed like the simplest and most conservative
4353 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4354 * An alpha-quality port to the parisc architecture running Linux,
4355 based on the old CMUCL backend, has been made. This, even more so
4356 than the other backends, should be considered still a work in
4357 progress; known problems include that the Linux kernel in 64-bit
4358 mode does not propagate the correct sigcontext structure to
4359 userspace, and consequently SBCL on a parisc64 kernel will not
4361 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4362 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4363 suppressed.) Also now that the compiler is looking at declarations
4364 in the environment, it checks optimization declarations as well,
4365 and suppresses inlining when (> DEBUG SPEED).
4366 * More fixes have been made to treatment of floating point exception
4367 treatment and other Unix signals. In particular, floating point
4368 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4369 * The detection and handling of control stack exhaustion (infinite
4370 or very deeply nested recursion) has changed. Stack exhaustion
4371 detection is now done by write-protecting pages at the OS level
4372 and applies at all optimization settings; when found, a
4373 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4374 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4375 be caught using IGNORE-ERRORS.
4376 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4377 correctly when transforming recursive LABELS functions to LETs.
4378 (thanks to Alexey Dejneka)
4379 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4380 that are names of constants or global variables.
4381 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4382 alien routines with docstrings.
4383 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4384 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4386 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4387 (thanks to Eric Marsden)
4388 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4389 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4390 * Bug fix: The SPARC backend can now compile functions involving
4391 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4392 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4393 to a functions expecting a PATHNAME-DESIGNATOR.
4394 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4395 lambda lists. (thanks to Alexey Dejneka)
4396 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4397 functions so that EXPORTing the name of the class doesn't cause
4398 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4399 to Antonio Martinez for reporting this)
4400 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4401 constant-folded without failing an assertion. (thanks to Einar
4402 Floystad Dorum for reporting this)
4403 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4404 types are now dealt with more correctly by the compiler.
4405 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4406 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4407 behaviour analogous to RENAME-FILE. This puts its behaviour more
4408 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4410 * The fasl file version number has changed again. (because of the
4411 bug fix involving the names of PCL MAKE-INSTANCE functions)
4413 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4414 * bug fix: Floating point exceptions are treated much more
4415 consistently on the x86/Linux and PPC/Linux platforms.
4416 * Array initialization with :INITIAL-ELEMENT is now much faster for
4417 cases when the compiler cannot open code the array creation, but
4418 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4419 array accesses have also seen a speed increase.
4420 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4421 specified. (This was at the root of some bad interactions between
4422 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4424 * bug fix: Internal error arguments for undefined functions are now
4425 computed correctly on the PPC/Linux platform.
4426 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4427 Raymond Toy's patch for CMU CL)
4428 * Support for the Solaris 9 operating environment has been included
4429 (thanks to Daniel Merritt)
4430 * A very ugly but hopefully complete draft of the missing FFI chapter
4431 of the manual has been created by reformatting the corresponding
4432 CMU CL manual chapter into (currently very ugly and incoherent)
4433 DocBook and bringing it up to date for SBCL behavior. Thus, the
4434 manual is now essentially complete, at least by my extreme
4435 once-and-only-once standards, whereby it's acceptable to refer to
4436 the doc strings of SB-EXT functions as the primary documentation.
4437 * The fasl file version number has changed again, due to cleanup of
4438 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4439 is no longer a static symbol.)
4441 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4442 * SBCL now builds with OpenMCL (version 0.12) as the
4443 cross-compilation host; also, more progress has been made toward
4444 bootstrapping under CLISP.
4445 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4447 * bug 158 fixed: The compiler can now deal with integer loop
4448 increments different from 1; fixing this turned out also to fix
4450 * bug 169 fixed: no more bogus warnings about using lexical bindings
4451 despite the presence of perfectly good SPECIAL declarations (thanks
4452 to David Lichteblau)
4453 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4454 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4455 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4457 * bug 180 fixed: Method combination specifications no longer ignore
4458 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4459 * bug fix: Structure type predicate functions now check their argument
4460 count as they should.
4461 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4462 correctly. (thanks to Pierre Mai)
4463 * minor incompatible change: The --noprogrammer option is deprecated
4464 in favor of the new --disable-debugger option, which is very similar.
4465 (The major difference is that it takes effect at a slightly different
4466 time at startup, causing handling of errors in --sysinit and
4467 --userinit files will be affected differently.) The
4468 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4469 been added to allow this functionality to be controlled from ordinary
4470 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4471 maintainers, who might want to run non-interactive scripts to
4472 build SBCL cores which will later be used interactively.)
4473 * minor incompatible change: The LOAD function no longer, when given
4474 a wild pathname to load, loads all files matching that pathname.
4475 Instead, an error of type FILE-ERROR is signalled.
4477 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4478 * bug 147 fixed: The compiler preserves its block link/count
4479 invariants more correctly now so that it doesn't crash. (thanks
4481 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4483 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4484 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4485 no-value-for-this-character as NIL (as specified by ANSI).
4486 * HOST-NAMESTRING on physical pathnames now returns a string that is
4487 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4488 (thanks to Christophe Rhodes)
4489 * The Alpha port handles icache flushing more correctly. (thanks to
4491 * More progress has been made toward bootstrapping under CLISP. (thanks
4492 to Christophe Rhodes)
4493 * The fasl file format has changed again, because dynamic loading
4494 on OpenBSD (which has non-ELF object files) motivated some cleanups
4495 in the way that foreign symbols are transformed and passed around.
4496 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4497 is no longer treated as whitespace by the reader, but instead as
4498 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4499 |A
\7fB|, instead of A as it used to.
4501 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4502 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4503 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4504 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4505 this as of 0.7.1.45, but was left out of the previous news section
4506 (thanks to Dan Barlow)
4507 * SBCL now runs on the Solaris operating system on SPARC architectures
4508 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4509 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4510 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4511 * SPARC backend cleanups, allowing builds of cores optimized for V8
4512 and V9 SPARCS, and also emission of code targeted to a particular
4513 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4515 * SBCL is closer to bootstrapping under CLISP, thanks to various
4516 fixes by Christophe Rhodes.
4517 * The fasl file format has changed again, to allow the compiler's
4518 INFO database to support symbol macros.
4519 * The user manual (in doc/) is formatted into HTML more nicely.
4520 (thanks to coreythomas)
4521 * The system is smarter about SUBTYPEP relationships, especially
4522 those involving NOT types (including types such as ATOM which are
4523 represented internally using NOT types). Thus SUBTYPEP is less
4524 likely to return (VALUES NIL NIL) in general, and in particular
4525 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4527 * The fasl file format has changed again, because the internal
4528 representation of types now includes a new slot to support the new
4529 SUBTYPEP-of-NOT-types logic.
4530 * (not a change in the main branch of SBCL, but a related prototype
4531 which can hopefully be merged into the main branch of SBCL in the
4532 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4533 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4534 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4535 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4536 dispatch macro character combinations. (thanks to Alexey Dejneka)
4537 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4538 that superficially look like logical namestrings correctly.
4539 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4541 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4542 default supplied-p) for &optional and &key arguments. (thanks to
4545 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4546 * incompatible change: The compiler is now less aggressive about
4547 tail call optimization, doing it only when (> SPACE DEBUG) or
4548 (> SPEED DEBUG). (This is an incompatible change because there are
4549 programs which relied on the old CMU-CL-style behavior to optimize
4550 away their unbounded recursion which will now die of stack overflow.)
4551 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4552 for non-GENCGC systems has been increased to 20M (since that
4553 seems much closer to the likely performance optimum for modern
4554 systems than the old 4M value was)
4555 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4556 and *DEBUG-PRINT-LEVEL*
4557 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4558 of CMU CL's support for SPARC, and various endianness and other
4559 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4560 * new syntactic sugar for the Unix command line: --load foo.bar is now
4561 an alternate notation for --eval '(load "foo.bar")'.
4563 ** The system now detects stack overflow and handles it gracefully,
4564 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4565 optimization settings. (This is a good thing in general, and
4566 its introduction in this version should be particularly timely
4567 for anyone whose code fails because of suppression of tail
4569 ** The system now hunts for the C variable "environ" in a more
4570 devious way, to avoid segfaults when the C library version differs
4571 between compile time and run time. (thanks to Christophe Rhodes)
4572 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4573 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4574 ** The compiler no longer issues bogus style warnings for undefined
4575 classes in the same source file as the DEFCLASSes which defined
4576 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4578 ** fixes in CONDITION class precedence list for undefined function
4579 errors (thanks to Alexei Dejneka)
4580 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4581 correctly. (thanks to Dan Barlow)
4582 ** portability fixes aiming at bootstrapping under CLISP (thanks
4583 to Dave McDonald and Christophe Rhodes)
4584 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4585 ** fixes in type translation and and type inference (thanks to
4587 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4588 ** various fixes in the new ports (thanks to Dan Barlow)
4589 * several changes related to debugging:
4590 ** suppression of tail recursion, as noted above
4591 ** stack overflow detection, as noted above
4592 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4593 is now the default. (For some time encapsulation has been more
4594 reliable than the breakpoint-based :ENCAPSULATE NIL
4595 implementation, at least on X86 systems; and I just noticed that
4596 encapsulation also seems closer to the spirit of the ANSI
4599 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4601 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4602 up properly again. (There was a packaging bug in 0.7.0 which
4603 left their definitions in SB-SYS::LOAD-FOREIGN and
4604 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4605 vital for most things which interface to C-level interfaces,
4606 like extensions working with sockets or databases or
4607 Perl-compatible regexes or whatever, and the need to fix
4608 this bug is the main reason that 0.7.1 was released so
4610 ** DEFGENERIC is now choosier about the methods it redefines, so that
4611 reLOADing a previously-LOADed file containing DEFGENERICs does
4612 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4613 cycle now works as it should. (thanks to Alexey Dejneka)
4614 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4615 fixed by Christophe Rhodes. (He actually submitted this patch
4616 months ago, and I delayed until after 0.7.0.)
4617 ** Bug 111 (internal compiler confusion about runtime checks on
4618 FUNCTION types) was fixed by Alexey Dejneka.
4619 * Some internal cleanups (getting rid of variables which aren't
4620 needed now that the byte interpreter is gone) caused the fasl
4621 file format number to change again.
4623 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4624 * major incompatible change: The default fasl file extension, i.e. the
4625 default extension for files produced by COMPILE-FILE, has changed
4626 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4628 ** There are many changes in the implementation of the compiler.
4629 SBCL is now essentially a compiler-only implementation of ANSI
4630 Common Lisp. EVAL still "interprets" a few special cases, but
4631 almost all the interesting cases are handled by creating
4632 a LAMBDA expression, calling COMPILE on it, then calling
4633 FUNCALL on the result.
4634 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4635 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4636 Since the code is newer, there might still be some new bugs
4637 (though not as many as before Martin Atzmueller's fixes:-). But
4638 the new code is substantially simpler and clearer, and hopefully
4639 any remaining bugs will be simpler, less fundamental, and more
4640 fixable then the bugs in the old code.
4641 ** The revised compiler is still a little unsteady on its feet.
4643 *** The debugging information it produces (particularly the names
4644 of FUNCTION objects) is sometimes much less useful than what
4645 the old compiler produced.
4646 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4647 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4648 within a MACROLET) has been temporarily weakened.
4649 ** There are new compiler optimizations for various functions:
4650 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4651 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4652 *** the math functions TRUNCATE, FLOOR, and CEILING
4653 *** the function-of-all-trades COERCE
4654 Mostly these should be transparent, but there's one
4655 potentially-annoying problem (bug 117): when the compiler
4656 inline-expands a function and does type analysis on the result,
4657 it can create control paths which have type mismatches, and
4658 when it can't prove that those control paths aren't taken,
4659 it will issue WARNINGs about the type mismatches. This is
4660 a particular problem in practice for the new sequence functions.
4661 It's not clear how this should be fixed, and for now, a
4662 workaround is given in the entry for 117 in the BUGS file.
4663 ** (Because of the interaction between the two previous items --
4664 occasional inlining problems and new inline expansions -- some
4665 of the new sequence function optimizations won't really kick in
4666 completely until debugging information, and then inlining, are
4667 straightened out in some future version.)
4668 * minor incompatible changes:
4669 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4670 DIRECTORY no longer implicitly promotes NIL slots of its
4671 pathname argument to :WILD. In particular, when you ask for the
4672 contents of a directory (which you used to be able to do without
4673 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4674 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4675 ** changes in behavior that ANSI explicitly defines to be
4676 implementation dependent:
4677 *** The new compiler-only implementation still conforms with ANSI,
4678 but acts a little different than before. Besides the obvious
4679 changes in performance tradeoffs (that the cost per form passed
4680 to EVAL has gone up, and the cost per form executed by EVAL
4681 has gone down), the behavior of the system changes a little
4682 because there are no longer any interpreted function objects.
4683 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4684 e.g. doing COMPILE on the output of interactive DEFUN is
4686 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4688 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4689 has changed from (:CL) to NIL.
4690 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4691 e.g. #\Newline and #\Tab, don't have names specified in the
4692 ANSI Common Lisp standard, is now based on their ASCII symbolic
4693 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4694 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4695 are no longer used for output.
4696 ** changes in internal implementation constants:
4697 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4698 4 million. (If your application spends a lot of time GCing and
4699 you have a lot of RAM, you might want to experiment with
4700 increasing it even more.)
4701 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4702 However, almost all old code should still continue to work without
4703 immediate update, as SB-C-CALL is now a (deprecated) nickname
4705 ** Old operator names in the style DEF-FOO are now deprecated in
4706 favor of new corresponding names DEFINE-FOO, for consistency with
4707 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4708 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4709 internal symbols, but a few supported extensions like
4710 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4711 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4712 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4713 etc. as you get deeper into recursive calls to the debugger
4714 command loop, instead of the old "5]", "5]]", "5]]]"
4715 sequence. (I was motivated to do this when squabbles between
4716 ILISP and SBCL left me very deeply nested in the debugger. In the
4717 short term, this change will probably provoke more ILISP/SBCL
4718 squabbles, but hopefully it will be an improvement in the long run.)
4719 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4720 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4721 function, since declaiming return types involving aliens is
4722 (1) annoyingly messy to do by hand and (2) vital to efficient
4723 compilation of code which calls such functions.
4724 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4725 longer reexported by the SB-EXT package. They're solely useful
4726 for alien code, so it seems more logical that you should get
4727 them from the SB-ALIEN package, not in SB-EXT.
4728 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4729 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4730 features. Instead, the code that they used to control is always
4731 built into the system.
4732 * many other bug fixes
4733 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4734 advantage of the new EVAL-WHEN stuff and to clean them up in
4735 general, and they are now more ANSI-compliant in a number of
4736 ways. Martin Atzmueller is responsible for a lot of this.
4737 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4739 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4740 *** correct ERROR type for various file operations
4741 *** some fixes for Lisp streams
4742 *** DEFMETHOD syntax checking
4743 *** changing old weird representation of debug information as
4744 strings (which, among their other deficiencies, don't transform
4745 correctly when you rename packages, and don't change their
4746 print representation when you change things like *PACKAGE*
4747 and *PRINT-LENGTH*) to symbols and lists of symbols
4748 He also made several improvements and fixed several bugs in DESCRIBE.
4749 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4751 *** misbehavior of WRITE-STRING/WRITE-LINE
4752 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4753 and several other LOOP problems as well
4754 *** DIRECTORY when similar filenames are present
4755 *** DEFGENERIC with :METHOD options
4756 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4757 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4758 *** argument ordering in FIND with :TEST option
4759 *** mishandled package designator argument in APROPOS-LIST
4760 *** various problems in the backquote readmacro
4761 *** a bug in APROPOS
4762 *** probably some others that I'm not describing very well here,
4763 since the CVS log documents them by reference to sbcl-devel
4764 messages, and the SourceForge archives aren't working well.:-(
4765 ** Dan Barlow improved the Alpha port (and is making progress on the
4766 PPC port, for those of you who think different).
4767 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4768 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4769 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4770 continues to work on the SPARC port (for those of you in a position
4771 to look down upon our little PC-compatible boxes from a great height).
4772 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4773 and uses that copy, rather than the current dynamic value, when
4774 it's trying to decide whether to truncate output. Thus e.g.
4775 (let ((*print-lines* 50))
4776 (pprint-logical-block (stream nil)
4778 (let ((*print-lines* 8))
4779 (print (aref possiblybigthings i) stream)))))
4780 should now truncate the logical block only at 50 lines, instead of
4781 often truncating it at 8 lines, as it did before.
4782 * The doc/cmucl/ directory, containing old CMU CL documentation
4783 from the time of the fork, is no longer part of the base system.
4784 SourceForge has shut down its anonymous FTP service, and with it
4785 my original plan for distributing the old CMU CL documentation
4786 there. For now, if you need these files you can download an old
4787 SBCL source release and extract them from it.
4788 * The fasl file version number changed again, for dozens of reasons,
4789 some of which are apparent above.
4791 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4792 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4793 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4794 patch, so that DISASSEMBLE output is much nicer.
4795 * The code in the SB-PROFILE package now seems reasonably stable.
4796 I still haven't decided what the final interface should look like
4797 (I'd like PROFILE to interact cleanly with TRACE, since both
4798 facilities use function encapsulation) but if you have a need
4799 for profiling now, you can probably use it successfully with
4800 the current CMU-CL-style interface.
4801 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4802 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4803 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4804 link now returns the dangling link itself, and for similar
4805 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4806 link itself. (In these cases the old code signalled an error and
4807 looped endlessly, respectively.) Thus, DIRECTORY now works even
4808 in the presence of dangling and cyclic symbolic links.
4809 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4810 is now a supported extension again, since the consensus on
4811 sbcl-devel was that it can be useful for ordinary development
4812 work, not just for debugging SBCL itself.
4813 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4814 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4815 that currently-defined functions might be redefined later with
4816 different return types.
4817 * Hash tables can be printed readably, as inspired by CMU CL code
4818 of Eric Marsden and SBCL code of Martin Atzmueller.
4819 * better error handling in CLOS method combination, thanks to
4820 Martin Atzmueller porting Pierre Mai's CMU CL patches
4821 * more overflow fixes for >16Mbyte I/O buffers
4822 * A bug in READ has been fixed, so that now a single Ctrl-D
4823 character suffices to cause end-of-file on character streams.
4824 In particular, now you only need one Ctrl-D at the command
4825 line (not two) to exit SBCL.
4826 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4828 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4829 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4830 does the right thing.
4831 * The implementation of some type tests, especially for CONDITION
4832 types, is now tidier and maybe faster, due to CMU CL code
4833 originally by Douglas Crosher, ported by Martin Atzmueller.
4834 * Some math functions have been fixed, and there are new
4835 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4836 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4837 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4838 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4839 likely to be built into sbcl-0.7.0.)
4840 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4841 CL, ported to SBCL by Martin Atzmueller)
4842 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4843 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4844 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4845 * There's a new slam.sh hack to shorten the edit/compile/debug
4846 cycle for low-level changes to SBCL itself, and a new
4847 :SB-AFTER-XC-CORE target feature to control the generation of
4848 the after-xc.core file needed by slam.sh.
4849 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4850 COMPILE-FILE is no longer supported, so that now every function
4851 gets an entry point, so that block compilation looks a little
4852 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4853 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4854 returns the number of bytes consed since the system started,
4855 rather than the number consed since the first time the function
4856 was called. (The new definition parallels ANSI functions like
4857 CL:GET-INTERNAL-RUN-TIME.)
4858 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4859 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4860 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4861 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4862 * Fasl file version numbers are now independent of the target CPU,
4863 since historically most system changes which required version
4864 number changes have affected all CPUs equally. Similarly,
4865 the byte fasl file version is now equal to the ordinary
4868 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4869 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4870 is no longer recognized. I apologize for this, because it was
4871 listed in SB-EXT as a supported extension, but I found that
4872 its existing behavior was poorly specified, as well as incorrectly
4873 specified, and it looked like too much of a mess to straighten it
4874 out. I have enough on my hands trying to get ANSI stuff to work..
4875 * many patches ported from CMU CL by Martin Atzmueller, with
4876 half a dozen bug fixes in pretty-printing and the debugger, and
4877 half a dozen others elsewhere
4878 * fixed bug 13: Floating point infinities are now supported again.
4879 They might still be a little bit flaky, but thanks to bug reports
4880 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4881 as flaky as they were.
4882 * The --noprogrammer command line option is now supported. (Its
4883 behavior is slightly different in detail from what the old man
4884 page claimed it would do, but it's still appropriate under the
4885 same circumstances that the man page talks about.)
4886 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4887 are now supported, and enabled by default. Thus, the compiler can
4888 handle many floating point and complex operations much less
4889 inefficiently. (Thus e.g. you can implement a complex FFT
4891 * The compiler now detects type mismatches between DECLAIM FTYPE
4892 and DEFUN better, and implements CHECK-TYPE more correctly, and
4893 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4894 thanks to patches from Martin Atzmueller.
4895 * various fixes to make the cross-compiler more portable to
4896 ANSI-conforming-but-different cross-compilation hosts (notably
4897 Lispworks for Windows, following bug reports from Arthur Lemmens)
4898 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4899 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4900 fixed thanks to Pierre Mai's CMU CL patches.
4901 * fixes to keep the system from overflowing internal counters when
4902 it tries to use i/o buffers larger than 16M bytes
4903 * fixed bug 45a: Various internal functions required to support
4904 complex special functions have been merged from CMU CL sources.
4905 (When I was first setting up SBCL, I misunderstood a compile-time
4906 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4907 * improved support for type intersection and union, fixing bug 12
4908 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4909 more obscure bugs as well
4910 * some steps toward byte-compiling non-performance-critical
4911 parts of the system, courtesy of patches from Martin Atzmueller
4912 * Christophe Rhodes has made some debian packages of sbcl at
4913 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4914 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4915 stable, but are nonetheless usable. When he's ready, I'd be happy
4916 to add them to the SourceForge "File Releases" section. (And if
4917 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4918 * new fasl file format version number (because of changes in
4919 internal representation of (OR ..) types to accommodate the new
4920 support for (AND ..) types, among other things)
4922 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4923 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4925 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4927 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4928 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4929 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4930 * DESCRIBE now works on structure objects again.
4931 * Most function call argument type mismatches are now handled as
4932 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4933 know whether the function will be redefined before the call is
4934 executed. (The compiler could flag local calls with full WARNINGs,
4935 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4936 it doesn't keep track of enough information to know whether calls
4937 are local in this sense.)
4938 * Compiler output is now more verbose, with messages truncated
4939 later than before. (There should be some supported way for users
4940 to override the default verbosity, but I haven't decided how to
4941 provide it yet, so this behavior is still controlled by the internal
4942 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4943 src/compiler/ir1util.lisp.)
4944 * Fasl file format version numbers have increased again, because
4945 support for the Gray streams extension changes the layout of the
4946 system's STREAM objects.
4947 * The Gray subclassable streams extension now works, thanks to a
4948 patch from Martin Atzmueller.
4949 * The full LOAD-FOREIGN extension (not just the primitive
4950 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4951 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4952 but like most other programs, it defaults to copying the Unix
4953 environment from the original process instead of starting the
4954 new process in an empty environment.
4955 * Extensions which manipulate the Unix environment now support
4956 an :ENVIRONMENT keyword option which doesn't smash case or
4957 do other bad things. The CMU-CL-style :ENV option is retained
4958 for porting convenience.
4959 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4960 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4962 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4964 * A patch from Martin Atzmueller seems to have solved the SIGINT
4965 problem, and as far as we know, signal-handling now works cleanly.
4966 (If you find any new bugs, please report them!)
4967 * The system no longer defaults Lisp source file names to types
4968 ".l", ".cl", or ".lsp", but only to ".lisp".
4969 * The compiler no longer uses special default file extensions for
4970 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4971 seems to expect a single default extension for all compiled code,
4972 and there's no compelling reason to try to stretch the standard
4973 to allow two different extensions.) Instead, byte-compiled files
4974 default to the same extension as native-compiled files.
4975 * Fasl file format version numbers have increased again, because
4976 a rearrangement of internal implementation packages made some
4977 dumped symbols in old fasl files unreadable in new cores.
4978 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4979 many fewer weird special cases.
4980 * Bug #17 (differing COMPILE-FILE behavior between logical and
4981 physical pathnames) has been fixed, and some related misbehavior too,
4982 thanks to a patch from Martin Atzmueller.
4983 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4984 by Tim Moore, ported to SBCL by Martin Atzmueller.
4985 * Martin Atzmueller fixed several filesystem-related problems,
4986 including bug #36, in part by porting CMU CL patches, which were
4987 written in part by Paul Werkowski.
4988 * More compiler warnings in src/runtime/ are gone, thanks to
4989 more patches from Martin Atzmueller.
4990 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4993 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4995 * DESCRIBE now works on CONDITION objects.
4996 * The debugger now handles errors which arise when trying to print
4997 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4999 * The build system now uses an additional file, customize-target-features.lisp,
5000 to allow local modifications to the target *FEATURES* list. (The point of
5001 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5002 debugging features enabled, without having to worry about propagating it
5003 into everyone's system when I do a "cvs update".) When no
5004 customize-target-features.lisp file exists, the target *FEATURES* list
5005 should be constructed the same way as before.
5006 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5007 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5008 warn about behavior which is undefined under the ANSI spec. Note: This
5009 is specified by ANSI, but it's not very popular with programmers.
5010 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5011 macro in the SBCL sources for an example of a workaround which you
5012 might use to make portable ANSI-standard code which does what you want.
5013 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5014 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5015 when it's used as a non-toplevel form. (This is required in order
5016 to implement the DEFCONSTANT-EQX macro.)
5017 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5018 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5019 funny things, due to bugs in the implementation of EVAL-WHEN
5020 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5021 non-toplevel DEFCONSTANTs are uncommon.)
5022 * The core file version number and fasl file version number have been
5023 incremented, because the old noncompliant DEFCONSTANT behavior involved
5024 calling functions which no longer exist, and because I also took the
5025 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5026 * fixed bug 1 (error handling before read-eval-print loop starts), and
5027 redid debugger restarts and related debugger commands somewhat while
5029 ** The QUIT debugger command is gone, since it did something
5030 rather different than the SB-EXT:QUIT command, and since it never
5031 worked properly outside the main toplevel read/eval/print loop.
5032 Invoking the new TOPLEVEL restart provides the same functionality.
5033 ** The GO debugger command is also gone, since you can just invoke
5034 the CONTINUE restart directly instead.
5035 ** The TOP debugger command is also gone, since it's redundant with the
5036 FRAME 0 command, and since it interfered with abbreviations for the
5038 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5040 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5041 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5042 some porting work by Martin Atzmueller)
5043 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5044 with a boatload of patches which he ported to SBCL. Now that those
5046 ** The system tries to make sure that its low-priority messages
5047 are prefixed by semicolons, to help people who like to use
5048 syntax highlighting in their ILISP buffer. (This patch
5049 was originally due to Raymond Toy.)
5050 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5051 patches originally written by Raymond Toy.
5052 ** The compiler understands coercion between single-value and
5053 multiple-VALUES type expressions better, getting rid of some very
5054 weird behavior, thanks to patches originally by Robert MacLachlan
5055 and Douglas Crosher.
5056 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5057 lambda lists, thanks to a patch originally by Pierre Mai.
5058 ** The system no longer bogusly warns about "abbreviated type
5060 ** The compiler gets less confused by inlining and RETURN-FROM,
5061 thanks to some patches originally by Tim Moore.
5062 ** The system no longer hangs when dumping circular lists to fasl
5063 files, thanks to a patch originally from Douglas Crosher.
5064 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5065 undefined function error.
5066 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5067 in structure slot initforms) for now, documented workaround instead:-|
5068 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5069 * fixed bug 5: added stubs for various Gray stream functions called
5070 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5071 installed, at least appropriate type errors are generated
5072 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5073 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5074 consistently in DEFMETHOD forms.
5075 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5076 it doesn't seem to affect SBCL after all
5077 * The C runtime system now builds with better optimization and many
5078 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5080 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5082 * The system is now under CVS at SourceForge (instead of the
5083 CVS repository on my home machine).
5084 * The new signal handling code has been tweaked to treat register
5085 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5086 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5087 downstream, e.g. in debug-int.lisp, has implicit dependencies
5088 on the unsignedness of integer representation of machine words,
5089 and that caused the system to bomb out with infinite regress
5090 when trying to recover from type errors involving signed values,
5091 e.g. (BUTLAST '(1 2 3) -1).)
5092 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5093 (This was one of the bugs Peter Van Eynde reported back in July.)
5094 * The system now uses code inspired by Colin Walters' O(N)
5095 implementation of MAP (from the cmucl-imp@cons.org mailing
5096 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5097 inline the MAP operation, and there is more than one
5098 sequence argument to the MAP call (so that it can't just
5099 do ETYPECASE once and for all based on the type of the
5100 single sequence argument). (The old non-inline implementation
5101 of the general M-argument sequence-of-length-N case required
5102 O(M*N*N) time when any of the sequence arguments were LISTs.)
5103 * The QUIT :UNIX-CODE keyword argument has been renamed to
5104 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5105 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5107 * Raymond Wiker's patches to port dynamic loading from Linux to
5108 FreeBSD have been added.
5109 * The BUGS file is now more nearly up to date, thanks in large part
5110 to Martin Atzmueller's review of it.
5111 * The debugger now flushes standard output streams before it begins
5112 its output ("debugger invoked" and so forth).
5113 * The core version number and fasl file version number have both
5114 been incremented, because of incompatible changes in the layout
5116 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5117 used to not be called for a saved Lisp image.)
5118 * Martin Atzmueller's version of a patch to fix a compiler crash,
5119 as posted on sbcl-devel 13 September 2000, has been installed.
5120 * Instead of installing Martin Atzmueller's patch for the
5121 compiler transform for SUBSEQ, I deleted the compiler transform,
5122 and transforms for some similar consing operations.
5123 * A bug in signal handling which kept TRACE from working on OpenBSD
5125 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5126 away by constant folding
5127 * The system now defines its address space constants in one place
5128 (in the Lisp sources), and propagates them automatically elsewhere
5129 (through GENESIS and the sbcl.h file). Therefore, patching the
5130 address map is less unnecessarily tedious and error-prone. The
5131 Lisp names of address space constants have also been systematized.
5132 * CVS tags like dollar-Header-dollar have been removed from
5133 the sources, because they have never saved me trouble and
5134 they've been source of trouble working with patches and other
5135 diff-related operations.
5136 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5137 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5139 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5141 * The system has been ported to OpenBSD.
5142 * The system now compiles with a simple "sh make.sh" on the systems
5143 that it's supported on. I.e., now you no longer need to tweak
5144 text in the target-features.lisp-expr and symlinks in src/runtime/
5145 by hand, the make.sh takes care of it for you.
5146 * The system is no longer so grossly inefficient when compiling code
5147 involving vectors implemented as general (not simple) vectors (VECTOR T),
5148 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5149 which dares to use the various sequence functions on non-simple
5150 vectors, takes less of a performance hit.
5151 * There is now a primitive type predicate VECTOR-T-P
5152 to test for the (VECTOR T) type, so that e.g.
5153 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5154 can now be compiled with some semblance of efficiency. (The old code
5155 turned the type declaration into a full call to %TYPEP at runtime!)
5156 * AREF on (VECTOR T) is still not fast, since it's still compiled
5157 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5158 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5159 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5160 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5161 without making full calls to SUBTYPEP at runtime.
5162 (Some analogous efficiency issues for non-simple vectors specialized to
5163 element types other than T, or for non-simple multidimensional arrays,
5164 have not been addressed. They could almost certainly be handled the
5165 same way if anyone is motivated to do so.)
5166 * The changes in array handling break binary compatibility, so
5167 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5168 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5169 instead of (VALUES T T).
5170 * By following the instructions that Dan Barlow posted to sbcl-devel
5171 on 2 July 2000, I was able to enable primitive dynamic object
5172 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5173 functionality is not implemented (since it calls ld to resolve
5174 library references automatically, requiring RUN-PROGRAM for its
5175 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5176 try to resolve library references) is now supported.
5177 * The system now flushes the standard output streams when it terminates,
5178 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5179 them at several other probably-convenient times, e.g. in each pass of
5180 the toplevel read-eval-print loop, and after evaluating a form given
5181 as an "--eval" command-line option. (These changes were motivated by a
5182 discussion of stream flushing issues on cmucl-imp in August 2000.)
5183 * The source transform for TYPEP of array types no longer assumes
5184 that an array whose element type is a not-yet-defined type
5185 is implemented as an array of T, but instead punts, so that the
5186 type will be interpreted at runtime.
5187 * There is now some support for cross-compiling in make.sh: each of
5188 the phases of make.sh has its own script. (This should be transparent
5189 to people doing ordinary, non-cross-compile builds.)
5190 * Since my laptop doesn't have hundreds of megabytes of memory like
5191 my desktop machine, I became more motivated to do some items on
5192 my to-do list in order to reduce the size of the system a little:
5193 ** Arrange for various needed-only-at-cold-init things to be
5194 uninterned after cold init. To support this, those things have
5195 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5196 symbols with such names are now uninterned after cold init).
5197 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5198 fasl files for cold load.
5199 ** Remove the old compiler structure pooling code (which used to
5200 be conditional on the target feature :SB-ALLOC) completely.
5201 ** Redo the representation of some data in cold init to be more compact.
5202 (I also looked into supporting byte compiled code at bootstrap time,
5203 which would probably reduce the size of the system a lot, but that
5204 looked too complicated, so I punted for now.)
5205 * The maximum signal nesting depth in the src/runtime/ support code has
5206 been reduced from 4096 to 256. (I don't know any reason for the very
5207 large old value. If the new smaller value turns out to break something,
5208 I'll probably just bump it back up.)
5209 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5211 * Many, many bugs reported by Peter Van Eynde have been added to
5212 the BUGS list; some have even been fixed.
5213 * While enabling dynamic object file loading, I tried to make the
5214 code easier to understand, renaming various functions and variables
5215 with less ambiguous names, and changing some function calling
5216 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5217 * While trying to figure out how to do the OpenBSD port, I tried to
5218 clean up some of the code in src/runtime/. In particular, I dropped
5219 support for non-POSIX signal handling, added various comments,
5220 tweaked the code to reduce the number of compilation warnings, and
5221 renamed some files to increase consistency.
5222 * To support the new automatic configuration functionality in make.sh,
5223 the source file target-features.lisp-expr has been replaced with the
5224 source file base-target-features.lisp-expr and the machine-generated
5225 file local-target-features.lisp-expr.
5226 * fixed a stupid quoting error in make.sh so that using CMU CL
5227 "lisp -batch" as cross-compilation host works again
5229 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5231 * DESCRIBE no longer tries to call itself recursively to describe
5232 bound/fbound values, so that it no longer fails on symbols which are
5233 bound to themselves (like keywords, T, and NIL).
5234 * DESCRIBE now works on generic functions.
5235 * The printer now prints less-screwed-up representations of closures
5236 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5237 * A private symbol is used instead of the :EMPTY keyword previously
5238 used to mark empty slots in hash tables. Thus
5239 (DEFVAR *HT* (MAKE-HASH-TABLE))
5240 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5241 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5242 now does what ANSI says that it should. (You can still get
5243 similar noncompliant behavior if bang on the hash table
5244 implementation with all the symbols you get back from
5245 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5246 This breaks binary compatibility, since tests for equality to
5247 :EMPTY are wired into things like the macroexpansion of
5248 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5250 * There's now a minimal placeholder implementation for CL:STEP,
5251 as required by ANSI.
5252 * An obscure bug in the interaction of the normal compiler, the byte
5253 compiler, inlining, and structure predicates has been patched
5254 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5255 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5257 * Missing ordinary arguments in a macro call are now detected even
5258 when the macro lambda list contains &KEY or &REST.
5259 * The debugger no longer complains about encountering the top of the
5260 stack when you type "FRAME 0" to explicitly instruct it to go to
5261 the top of the stack. And it now prints the frame you request even
5262 if it's the current frame (instead of saying "You are here.").
5263 * As specified by ANSI, the system now always prints keywords
5264 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5266 * The default initial SIZE of HASH-TABLEs is now smaller.
5267 * Type information from CLOS class dispatch is now propagated
5268 into DEFMETHOD bodies, so that e.g.
5269 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5271 is now basically equivalent to
5272 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5273 (DECLARE (TYPE SINGLE-FLOAT X))
5275 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5276 operation, without having to do run-time type dispatch.
5277 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5278 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5279 * Since I don't seem to be making big file reorganizations very often
5280 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5281 is overflowing my ability to conveniently back them up), I've finally
5282 checked the system into CVS. (The CVS repository is on my home system,
5283 not at SourceForge -- putting it on SourceForge might come later.)
5284 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5285 high-level GC-NOTIFY-FOO functions send their output. (There's
5286 still very little control of where low-level verbose GC functions
5287 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5288 less than it used to -- the GC-NOTIFY-FOO functions are now under
5289 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5290 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5291 in only one place in the source code, and propagates it automatically
5292 everywhere that it's needed. Thus e.g. when I bump the version from
5293 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5294 * The C source files now include boilerplate legalese and documentation
5295 at the head of each file (just as the Lisp source files already did).
5296 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5297 to his page will be replaced with a link to his new CLiki service.
5299 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5301 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5302 * The build process now looks for GNU make under the default name "gmake",
5303 instead of "make" as it used to. If GNU make is not available as "gmake"
5304 on your system, you can change this default behavior by setting the
5305 GNUMAKE environment variable.
5306 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5307 can build without error under CMU CL.
5309 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5311 * There is now a partial SBCL user manual (with some new text and some
5312 text cribbed from the CMU CL manual).
5313 * The beginnings of a profiler have been added (starting with the
5314 CMU CL profiler and simplifying and cleaning up). Eventually the
5315 main interface should be through the TRACE macro, but for now,
5316 it's still accessed through vaguely CMU-CL-style functions and macros
5317 exported from the package SB-PROFILE.
5318 * Some problems left over from porting CMU CL to the new
5319 cross-compilation bootstrap process have been cleaned up:
5320 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5321 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5322 part when getting rid of the compiler *BACKEND* stuff.)
5323 ** The value of *NULL-TYPE* was screwed up, because it was
5324 being initialized before the type system knew the final
5325 definition of the 'NULL type. This screwed up several key
5326 optimizations in the compiler, causing inefficiency in all sorts
5327 of places. (I found it because I wanted to understand why
5328 GET-INTERNAL-RUN-TIME was consing.)
5329 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5330 PROCLAIM FTYPE information. Unfortunately this broke binary
5331 compatibility again, since now the forms output by DEFGENERIC
5332 to refer to functions which didn't exist in 0.6.3.
5333 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5334 can use the new (as of 0.6.3) transform for SOME into MAP into
5336 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5337 values to (INTEGER 0 1000000), so that the time code will no longer
5338 occasionally get blown up by Linux returning 1000000 microseconds
5339 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5340 its output conform to the ANSI spec. (Alas, this makes its output
5341 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5342 * A full call to MAP NIL with a single sequence argument no longer conses.
5343 * fixes to problems pointed out by Martin Atzmueller:
5344 * The manual page no longer talks about multiprocessing as though
5345 it were currently supported.
5346 * The ILISP support patches have been removed from the distribution,
5347 because as of version 5.10.1, ILISP now supports SBCL without us
5348 having to maintain patches.
5349 * added a modified version of Raymond Toy's recent CMU CL patch for
5350 EQUALP comparison of HASH-TABLE
5352 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5354 * The system still can't cross-compile itself with
5355 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5356 entails), but at least it can compile more of itself that way
5357 than it used to be able to, and various buglets which were uncovered
5358 by trying to cross-compile itself that way have now been fixed.
5359 * This release breaks binary compatibility again. This time
5360 at least I've incremented the FASL file format version to 2, so that the
5361 problem can be detected reliably instead of just causing weird errors.
5362 * various new style warnings:
5363 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5364 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5365 ** using the lexical binding of a variable named in the *FOO* style
5366 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5367 as specified by ANSI.
5368 * *RANDOM-STATE* is no longer automatically initialized from
5369 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5370 default behavior of the system is to repeat its behavior every time
5371 it's run. If you'd like to change this behavior, you can always
5372 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5373 old convention there was no comparably easy way to get the system to
5374 repeat its behavior every time it was run.
5375 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5376 FTYPE declarations has been removed, in favor of their ANSI
5377 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5378 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5379 the types of their sequence arguments can be determined at compile time.
5380 This is done through a new open code expansion for MAP which eliminates
5381 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5382 argument types can be determined at compile time.
5383 * The optimizer now transforms COERCE into an identity operation when it
5384 can prove that the coerced object is already of the correct type. (This
5385 can be a win for machine generated code, including the output of other
5386 optimization transforms, such as the MAP transform above.)
5387 * Credit information has been moved from source file headers into CREDITS.
5388 * Source file headers have been made more standard.
5389 * The CASE macro now compiles without complaining even when it has
5392 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5394 * (Note that the way that the PCL macroexpansions were rewritten
5395 to accommodate the change in DEFGENERIC below breaks binary
5396 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5397 not run under sbcl-0.6.2. Once we get out of alpha releases,
5398 i.e. hit release 1.0.0, we'll probably try to maintain binary
5399 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5400 and sbcl-1.4.4. Until then, however, it might be fairly common
5401 for maintenance releases to break binary compatibility.)
5402 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5404 * The reporting of unhandled signals has been changed to print some
5405 explanatory text as well as the report form. (Previously only
5406 the report form was printed.)
5407 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5408 it defines, so that the compiler no longer issues undefined function
5409 warnings for compiled-but-not-yet-loaded generic functions.
5410 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5411 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5412 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5413 section of the ANSI spec are supported.
5414 * The "" nickname for the "KEYWORD" package has been removed.
5415 The reader still handles symbol tokens which begin with a package marker
5416 as keywords, but it doesn't expose its mechanism for doing so in the
5417 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5418 * The system now issues STYLE-WARNINGs for contradictory TYPE
5419 proclamations. (Warnings for contradictory FTYPE proclamations would
5420 be nice too, but those can't be done usefully unless the type system
5421 is made smarter about FUNCTION types.)
5422 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5423 systematized, so that "*target-*.lisp is supposed to exist only on the
5424 target and imply that there's a related file which exists on the
5425 host, and *host-*.lisp is supposed to exist only on the host and imply
5426 that there's a related file which exists on the target. This involves a
5427 lot of renaming. Hopefully the acute confusion caused by the renaming
5428 will be justified by the reduction in chronic confusion..
5429 ** runtime-type.lisp -> early-target-type.lisp
5430 ** target-type.lisp -> late-target-type.lisp
5431 ** early-host-format.lisp -> early-format.lisp
5432 ** late-host-format.lisp -> late-format.lisp
5433 ** host-error.lisp -> misc-error.lisp
5434 ** early-error.lisp -> early-target-error.lisp
5435 ** late-error.lisp -> late-target-error.lisp
5436 ** host-defboot.lisp -> early-defboot.lisp
5437 ** code/misc.lisp -> code/target-misc.lisp
5438 ** code/host-misc.lisp -> code/misc.lisp
5439 ** code/numbers.lisp -> code/target-numbers.lisp
5440 ** code/early-numbers.lisp -> numbers.lisp
5441 ** early-host-type.lisp -> early-type.lisp
5442 ** late-host-type.lisp -> late-type.lisp
5443 ** host-typep.lisp -> typep.lisp
5444 ** load.lisp -> target-load.lisp
5445 ** host-load.lisp -> load.lisp
5446 ** host-disassem.lisp -> disassem.lisp
5447 ** host-insts.lisp -> insts.lisp
5448 ** byte-comp.lisp -> target-byte-comp.lisp
5449 ** host-byte-comp.lisp -> byte-comp.lisp
5450 ** host-signal.lisp -> signal.lisp
5451 ** host-defstruct.lisp -> defstruct.lisp
5452 ** late-target-type.lisp -> deftypes-for-target.lisp
5453 Furthermore, several other previously target-only files foo.lisp (e.g.
5454 hash-table.lisp and random.lisp) have been split into a target-and-host
5455 foo.lisp file and a target-only target-foo.lisp file, with their key type
5456 definitions in the target-and-host part, so that the cross-compiler will
5457 know more about target types.
5458 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5459 gone away. In their place are various *BACKEND-FOO* variables
5460 corresponding to the slots of the old structure.
5461 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5462 into the target SBCL has been fixed.
5463 * The chill.lisp system for loading cold code into a running SBCL
5465 * Support for the CMU CL "scavenger hook" extension has been removed.
5466 (It was undocumented and unused in the CMU CL sources that SBCL was
5467 derived from, and stale in sbcl-0.6.1.)
5468 * Various errors in the cross-compiler type system were detected
5469 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5470 (enabling various consistency checks). Many of them were fixed,
5471 but some hard problems remain, so the compiler is back to
5472 running without *TYPE-SYSTEM-INITIALIZED* for now.
5473 * As part of the cross-compiler type system cleanup, I implemented
5474 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5475 * I have started adding UNCROSS calls throughout the type system
5476 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5477 on cross-compiler input files will be able to go away, and various
5479 * CONSTANTP now returns true for quoted forms (as explicitly required
5482 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5484 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5485 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5486 (MAKE-LIST -1). In the longer term, it ought to become true
5487 that declarations are assertions even at SAFETY 1. For now, it's not
5488 quite true even at SAFETY 3, but it's at least more nearly true..
5489 (Note that this change seems to increases the size of the system by
5490 O(5%) and to decrease the speed of the compiler by 20% or more.)
5491 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5492 for the problem of printing dozens of lines of distracting information
5493 about low-level system machinery as part of the top stack frame
5494 on entry to the debugger when an undefined function was called.
5495 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5496 is not reset to COMMON-LISP-USER.
5497 * Compilation of stuff related to dyncount.lisp has been made conditional
5498 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5499 smaller. The various dyncount-related symbols have been moved into
5500 a new "SB-DYNCOUNT" package.
5501 * tty-inspect.lisp has been renamed to inspect.lisp.
5502 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5503 feature has gone away. (When we eventually port to other flavors of
5504 libc and/or Unix, we'll try to make the differences between flavors
5505 invisible at the user level.)
5506 * Various other *FEATURES* tags, and/or their associated conditionals,
5507 have been removed if obsolescent, or given better documentation, or
5508 sometimes given more-mnemonic names.
5510 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5512 * tidied up "make.sh" script
5513 * tidied up system directory structure
5514 * better "clean.sh" behavior
5515 * added doc/FOR-CMUCL-DEVELOPERS
5516 * many many small tweaks to output format, e.g. removing possibly-confusing
5517 trailing #\. character in DESCRIBE-INSTANCE
5518 * (EQUALP #\A 'A) no longer signals an error.
5519 * new hashing code, including EQUALP hashing
5520 * tidied up Lisp initialization and toplevel
5521 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5522 * command line argument processing
5523 * added POSIX-GETENV function to deal with Unix-ish environment variables
5524 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5525 terminating SBCL on EOF
5526 * non-verbose GC by default
5527 * There is no more "sbcl" shell script; the sbcl file is now the C
5528 runtime executable (just like CMU CL).
5529 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5531 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5532 symbol and package information as Lisp native symbol and package objects
5533 instead of strings naming symbols and strings naming packages. This way,
5534 whenever packages are renamed (as in warm init), debug information is
5535 transformed along with everything else.
5536 * tweaked the optimization policy declarations which control the building
5537 of SBCL itself. Now, among other things, the system no longer saves
5538 source location debugging information. (This helps two problems at once
5539 by reducing SBCL size and by keeping SBCL from trying to look for its
5540 sources -- which may not exist -- when reporting errors.)
5541 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5542 debugging and testing purposes
5543 * cleaned up printing, making the printer call PRINT-OBJECT for
5544 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5545 methods, giving nearly-ANSI behavior
5546 * converted almost all special variables to use *FOO* naming convention
5547 * deleted PARSE-TIME functionality, since it can be done portably
5548 * moved some files out of cold init into warm init
5549 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5551 * regularized formatting of source files
5552 * added an install.sh script
5553 * fixed ridiculous memory usage of cross-compiler by making
5554 compiler/alloc.lisp not try to do pooling unless it can hook
5555 itself into the GC of the cross-compilation host. Now the system
5556 builds nicely on my old laptop.
5557 * added :SB-ALLOC in target-features.lisp-expr
5558 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5559 was not implemented)
5560 * re-did condition handling and note reporting in the compiler. Notes
5561 are no longer handled by signalling conditions. Style warnings
5562 and warnings are handled more correctly and reported in such a way
5563 that it's easy to find one or the other in your output (so that you
5564 can e.g. figure out which of many problems caused COMPILE-FILE to
5566 * changed the severity of several compiler warnings from full WARNING
5567 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5568 compiler note reporting so that it doesn't use the condition system
5569 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5570 COMPILE-FILE command)
5571 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5572 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5573 no longer supported, since their implementation was deeply intertwingled
5574 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5575 * removed bogus "support" for compiler macros named (SETF FOO), and
5576 removed the compiler macro for SETF INFO (but only after making a fool
5577 of myself on the cmucl-imp mailing list by posting a bogus patch for
5578 DEFINE-COMPILER-MACRO..)
5579 * Compiled files containing forms which have side effects on the Lisp
5580 reader (such as DEFPACKAGE forms) are now handled more correctly.
5581 (Compiler queuing of top level lambdas has been suppressed by setting
5582 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5583 * deleted various currently-unused source files, e.g. gengc.lisp. They
5584 may be added back at some point e.g. when porting to other architectures,
5585 but until they are it's distracting to distribute them and to try to
5587 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5588 there were so many of them they're just distractions, and UNCROSS is
5589 known to be able to handle the current sources
5590 * moved PROFILE functionality into TRACE, so that it will be clear
5591 how the wrapping and unwrapping of functions when you profile them
5592 interacts with the wrapping and unwrapping of functions when you
5593 trace them. (Actually, the functionality isn't there yet, but at least
5594 the interface specification is there. Hopefully, the functionality will
5595 arrive with some future maintenance release.)
5596 * removed host-oops.lisp
5597 * changed signature of QUIT function to allow UNIX-CODE argument
5598 * fixed READ-SEQUENCE bug
5599 * tweaked verbose GC output so that it looks more like the progress
5600 output that ANSI specifies for functions like LOAD
5601 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5602 * added <http://sbcl.sourceforge.com> to the banner information printed by