1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.36:
3 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
4 SB-THREAD:WAIT-ON-SEMAPHORE.
5 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
7 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
8 conditions to defer the deadline for forever.
9 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
11 * enhancement: errors from NO-APPLICABLE-METHOD and
12 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
13 generic function call.
14 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
15 * bug fix: a rare case of startup-time page table corruption.
16 * bug fix: a semaphore with multiple waiters and some of them unwinding due
17 to timeouts could be left in an inconsistent state.
18 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
20 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
21 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
22 stack frame thrown from.
23 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
24 compiler optimization qualities inside dynamic extent of its body.
25 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
26 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
28 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
29 constraint propgation, allowing better compilation eg. when used to
30 access structures with WITH-SLOTS. (lp#520366)
31 * optimization: the compiler is now more aware of the type of the underlying
32 storage vector for multidimensional simple arrays resulting in better code
33 for accessing such arrays.
34 * optimization: passing NIL as the environment argument to TYPEP no longer
35 inhibits optimizing it. (lp#309788)
36 * optimization: more efficient register usage when handling single-float
37 arguments on x86-64. (thanks to Lutz Euler)
38 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
39 pre-allocated temporary vectors. (lp#496249)
40 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
41 in :INITIAL-CONTENTS. (lp#523612)
42 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
43 functions. (lp#524707)
44 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
45 WITH-SLOTS usages during compilation.
46 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
47 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
48 all x86oid platforms with :UD2-BREAKPOINTS target feature.
49 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
50 instruction (tested on x86oid linux with ud2-breakpoints).
51 * bug fix: slam.sh now works on win32.
52 * bug fix: better differences of numeric types. (lp#309124)
53 * bug fix: arrays declared intersection and union types can have their
54 upgraded element type derived. (lp#316078)
55 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
56 threads started during profiling. (lp#472499)
57 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
59 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
60 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
61 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
62 values instead of signaling an error. (lp#309093)
63 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
65 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
66 declarations (lp#497321)
67 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
68 and failed to detect circular lists (lp#452008)
69 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
71 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
72 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
73 due to it, so that handlers can run.
74 * bug fix: reparsing undefined types if they have become defined since
76 * bug fix: missing &REST type in a proclamation for a function with both
77 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
78 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
79 expanded calls (lp#542174)
80 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
81 than just at toplevel form.
83 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
84 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
85 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
86 but work on type specifiers.
87 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
88 to name a type specifier.
89 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
90 specifier is valid where "valid" basically means "would be accepted as
91 second argument of TYPEP".
92 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
93 returns the function's declared, or derived FTYPE.
94 * new feature: SB-POSIX now supports accessing the d_ino member of
95 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
96 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
97 provide for seeding a RANDOM-STATE object with user-provided data or
98 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
99 attempt to initialize the returned state from the operating system's
100 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
101 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
102 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
103 * bug fix: Fix grammar and style issues for the docstrings of
104 printer-related variables and functions. (Thanks to mon_key; launchpad
106 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
108 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
109 in a row even though a handler defered the deadline long into the
111 * bug fix: A deadline handler was run without interrupts enabled for a
112 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
113 in infinitely spinning, non-killable threads.
114 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
115 before reaching the erring stack frame.
116 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
117 real power. (launchpad bug lp#525949)
118 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
119 GENCGC platforms. (launchpad bug lp#529014)
120 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
121 (launchpad bug lp#525916)
122 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
123 (Thanks to Robert Goldman)
125 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
126 * optimization: ROUND with a single single-float or double-float argument
127 is properly inlined when possible.
128 * optimization: Slightly better code is generated for integer<->float
129 conversions and for single-float<->double-float conversions on x86-64.
130 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
131 code for 32-bit and 64-bit rotations on x86-64.
132 * bug fix: The install script changes the ownership of directories as well
133 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
134 launchpad bug lp#508485)
135 * bug fix: TRUNCATE with a single single-float or double-float argument is
136 properly inlined when possible. (launchpad bug lp#489388)
137 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
138 no longer causes a compiler error on x86 and ppc.
139 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
140 always relative to *READTABLE* rather than the passed argument.
142 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
143 * minor incompatible change: threading support is now enabled by default
145 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
147 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
148 are now caught and reported just like errors during macroexpansion.
149 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
150 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
151 * enhancement: ASDF systems can now depends on SB-QUEUE.
152 * fixes and improvements related to Unicode and external formats:
153 ** bug fix: error handling and restart usage in the ucs-2 external format
155 ** there is now an implementation of the ucs-4 external format.
156 ** the utf-16 and utf-32 external formats are supported.
157 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
158 in the environment. setenv() and unsetenv() are also provided. (reported by
159 Fare Rideau; launchpad bug lp#460455)
160 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
161 loading. This ensures sensible errors for .FASL files from other
162 implementations on case-insensitive filesystems. (reported by Willem
163 Broekema; launchpad bug lp#489417)
164 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
165 Willem Broekema; launchpad bug lp#489698).
166 * bug fix: some minor code rearrangements to reenable warning-free building
167 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
168 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
170 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
173 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
174 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
175 * improvement: support O_LARGEFILE access to files larger than 2GB on
176 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
177 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
178 definitions for methods specializing on the passed class itself.
179 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
180 definitions for methods specializing on the passed class itself, or on
182 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
183 about itself during the build (e.g. for M-? in Slime), if this flag is
184 enabled in customize-target-features.lisp. This will increase the core
185 size by about 5-6mb, though, so it's mostly interesting to SBCL
187 * new feature: various GENCGC tuning parameters have been experimentally
188 documented and exported from SB-EXT. See documentation for details.
189 * fixes and improvements related to Unicode and external formats:
190 ** the Unicode character database has been upgraded to the
191 Unicode 5.2 standard, giving names and properties to a number of new
192 characters, and providing a few extra characters with case
194 ** improvement: restarts for providing replacement input/output on coding
195 errors for fd-stream external formats.
196 ** improvement: where :<encoding> is a keyword corresponding to an
197 external format the system supports, it is now possible to specify
198 (:<encoding> :replacement <character>) as an external format which will
199 automatically substitute <character> on encoding or decoding errors for
200 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
202 ** improvement: the file streams underlying the standard streams (such as
203 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
204 which uses the replacement mechanism to handle encoding errors,
205 preventing various infinite error chains and unrecoverable I/O
207 ** minor incompatible change: the utf-8 external format now correctly
208 refuses to encode Lisp characters in the surrogate range (char-codes
209 between #xd800 and #xdfff).
210 ** fix a typo preventing conversion of strings into octet vectors
211 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
213 ** fix a bug in the octet multibyte handling of decoding errors and the
214 USE-VALUE restart. (launchpad bug lp#314939)
215 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
216 restart on fd-stream decoding errors.
217 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
218 error is near the end of file.
219 ** fix a double-error case in unibyte octet conversions, when the first
220 use of USE-VALUE is ignored.
221 ** fix bugs in handling of undefined code points in unibyte encodings.
222 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
223 streams after an UNREAD-CHAR.
224 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
225 object is allocated in a boxed region of dynamic space.
226 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
227 fork with multiple Lisp threads running is made, instead of going
228 ahead with unpredictable consequences. (reported by Leslie Polzer)
229 * bug fix: uses of slot accessors on specialized method parameters within
230 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
231 error while finalizing the class. This fix may cause classes with slot
232 accessors to be finalized later than previously. (reported by Lars Rune
233 Nøstdal; launchpad bug lp#473699)
234 * bug fix: restore buildability on the MIPS platform. (regression from
235 1.0.30.38, reported by Samium Gromoff)
236 * bug fix: inspecting closures is less likely to fail with a type error.
237 * bug fix: no timer starvation when setting the system clock back.
238 (launchpad bug lp#460283)
239 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
240 standard pprint dispatch table as specified by CLHS.
241 * bug fix: give CLISP a hint about a type declaration to enable it to build
242 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
244 * bug fix: correctly dump literal objects in defaulting forms of arglists.
245 (reported by Attila Lendvai; launchpad bug lp#310132)
246 * bug fix: distinguish in type specifiers between arrays that might be
247 complex and arrays that are definitely complex. (launchpad bug lp#309129)
248 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
249 type. (reported by Levente Mészáros; launchpad bug lp#485972)
250 * bug fix: setting the value of a symbol-macro within a method in the
251 presence of type declarations works properly again. (reported by Iban
252 Hatchondo; launchpad bug lp#485019)
254 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
255 * optimization: faster FIND and POSITION on strings of unknown element type
256 in high SPEED policies. (thanks to Karol Swietlicki)
257 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
259 * improvement: better error signalling for bogus parameter specializer names
260 in DEFMETHOD forms (reported by Pluijzer)
261 * bug fix: DELETE-FILE once again works on logical pathnames (regression
263 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
265 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
266 removes previous default initargs (reported by Lars Rune Nøstdal and
268 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
269 lambda-lists. (reported by Peter Seibel)
270 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
271 correctly when starting from an executable core without saved runtime
272 options (reported by Faré Rideau, thanks to Zach Beane)
273 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
274 an optimization note instead. (reported by Martin Cracauer)
275 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
276 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
277 new process group if it doesn't need to share stdin with the sbcl
278 process. (thanks to Leslie Polzer)
279 * bug fix: SATISFIES could be misoptimized to refer to a local function.
280 (reported by Stanislaw Halik)
282 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
283 * improvement: stack allocation is should now be possible in all nested
284 inlining cases: failure to stack allocate when equivalent code is manually
285 open coded is now considered a bug.
286 * improvements related to Unicode:
287 ** the Unicode character database has been upgraded to the
288 Unicode 5.1 standard, giving names and properties to a number of new
289 characters, and providing a few extra characters with case
291 ** the system now recognizes and produces names for Unicode Hangul
293 ** the EBCDIC-US external-format is now supported for octet operations
294 (as well as for stream operations).
295 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
296 be used to output toplevel compile-time effects into a separate .CFASL
298 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
299 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
301 * optimization: TRUNCATE on known single- and double-floats is upto 25%
303 * optimization: division of floating point numbers by constants uses
304 multiplication by reciprocal when an exact reciprocal exists.
305 * optimization: multiplication of single- and double-floats floats by
306 constant two has been optimized.
307 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
308 sufficient type information is available. (thanks to Leslie Polzer)
309 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
310 known structure objects are as efficient as defstruct generated accessors.
311 * optimization: unused vector creation can now be optimized away.
312 * improvement: ASDF systems can now depends on SB-INTROSPECT.
313 * improvement: a STYLE-WARNING is signalled when a generic function
314 clobbers an earlier FTYPE proclamation.
315 * improvement: the compiler is able to track the effective type of
316 generic function across method addition and removal even in the
317 absence of an explicit DEFGENERIC.
318 * improvement: DESCRIBE now reports on symbols naming undefined
319 but assumed or declared function as well.
320 * improvement: recompilation of systems using SB-GROVEL now works
321 (thanks to Leslie Polzer)
322 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
323 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
325 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
326 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
327 well as user defined declaration names.
328 ** VARIABLE-INFORMATION is now aware of alien variables.
329 * improvement: improved address space layout on OpenBSD (thanks to Josh
331 * improvement: pretty-printing of various Lisp forms has been improved
332 (thanks to Tobias Rittweiler)
333 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
334 unused were deleted in safe code. (reported by John Fremlin)
335 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
337 * bug fix: some out-of-line array predicates were missing (reported by
339 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
341 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
342 (thanks to Larry D'Anna)
343 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
344 as well. (reported by Josh Elsasser)
345 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
346 leading to possible attempts to delete the same file twice. See docstring
347 on DELETE-FILE for details. (reported by John Fremlin)
348 * bug fix: DELETE-FILE once again deletes the file named by the pathname
349 designator argument, rather than its truename. (reported by Luis
351 * bug fix: the low-level debugger had 32-bit assumptions and was missing
352 information about some array types. (thanks to Luis Oliveira)
353 * bug fix: moderately complex combinations of inline expansions could
354 be miscompiled if the result was declared to be dynamic extent.
355 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
356 form (+ <variable> <integer>) were miscompiled under certain
358 * bug fix: in some cases no compiler note about failure to stack allocate
359 was emitted, even if the objects were in fact heap allocated.
360 * bug fix: minor violation of "otherwise inaccessible" rule for stack
361 allocation could cause objects users might reasonably expect to
362 be heap allocated to be stack allocated.
363 * bug fix: DESCRIBE signalled an error for generic functions under
364 certain circumstances. (thanks to Leslie Polzer)
365 * bug fix: Fixed spelling of an error message.
367 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
368 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
369 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
370 of SB-THREAD:THREAD-ERROR-THREAD.
371 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
372 * new feature: docstrings for local and anonymous functions are no longer
373 discarded. (thanks to Leslie Polzer)
374 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
375 values in other threads.
376 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
377 about object allocation.
378 * optimization: division of a real float by a complex float is implemented
379 with a specialised code sequence.
380 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
381 keywords is an order of magnitude faster.
382 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
383 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
384 methods, and similarly for non-standard metaclass classes as long as there
385 are no methods additional on MAKE-INSTANCE.
386 * optimization: more efficient type-checks for FIXNUMs when the value
387 is known to be a signed word on x86 and x86-64.
388 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
389 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
391 * optimization: compiler is smarter about delegating argument type checks to
393 * optimization: several character functions are now compiled somewhat more
394 efficiently. (reported by Lynn Quam)
395 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
396 * improvement: less unsafe constant folding in floating point arithmetic,
397 especially for mixed complex/real -float operations.
398 * optimization: constant double and single floats are stored in native
399 unboxed format on x86[-64].
400 * optimization: smarter code for arithmetic operations with constant floats,
401 complex floats, or integers on x86[-64].
402 * optimization: smarter code for conjugate/multiplication of float complexes
403 and abs/negate of floats on x86-64.
404 * optimization: more efficient complex float and real float operations on
406 * improvement: complex float division is slightly more stable.
407 * improvement: DESCRIBE output has been reworked to be easier to read and
408 contains more pertinent information.
409 * improvement: failure to provide requested stack allocation compiler notes
410 provided in all cases (requested stack allocation not happening without a
411 note being issued is now considered a bug.)
412 * bug fix: SB-POSIX exports the documented types and functions
413 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
414 types. (reported by "abhi")
415 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
416 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
417 (thanks to Paul Khuong)
418 * bug fix: looping around HANDLER-CASE could silently consume stack space
419 on each iteration. (reported by "foobar")
420 * bug fix: better error signalling when calls to functions seeking elements
421 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
422 (reported by Tobias Rittweiler)
423 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
424 directory components now works as it used to. (various prolems reported by
425 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
426 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
427 (reported by Elliot Slaughter, thanks to Stas Boukarev)
428 * bug fix: bogus undefined variable warnings from fopcompiled references to
429 global variables. (thanks to Lars Rune Nøstdal)
430 * bug fix: foreign function names should now appear in backtraces on
431 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
432 * bug fix: SETF compiler macro documentation strings are not discarded
434 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
435 (thanks to Alex Plotnick)
436 * bug fix: SLEEP accepts large integer arguments, truncating them to
437 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
438 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
439 * bug fix: compiler notes for expensive slot type checks could be emitted
440 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
442 changes in sbcl-1.0.29 relative to 1.0.28:
443 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
444 https://bugs.launchpad.net/sbcl
445 Bugs can be reported directly there, or by sending email to
446 sbcl-bugs@lists.sourceforge.net
447 (no subscription required.)
448 * minor incompatible change: under weak type checking policy integer
449 types are weakened less aggressively.
450 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
451 allowed to return, which causes SBCL to quit with exit status 0. Previously
452 if the function returned with a small integer return value, that value
453 was accidentally reused as the exit status.
454 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
455 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
456 :HASH-FUNCTION argument. Refer to user manual for details.
457 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
459 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
460 microseconds since the Unix epoch on all platforms.
461 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
462 allows the compiler to safely elide boundedness checks for special
464 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
465 the symbol, prohibits both lexical and dynamic binding. This is mainly an
466 efficiency measure for threaded platforms, but also valueable in
468 * new feature: UNC pathnames are now understood by the system on Windows.
469 * optimization: the compiler uses a specialized version of FILL when the
470 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
472 * optimization: accesses to potentially non-simple arrays where element type
473 is known are 50% faster.
474 * optimization: compiler now generates faster array typechecking code.
475 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
477 * optimization: multidimensional array accesses in the absence of type
478 information regarding array rank are approximately 10% faster due to
479 open coding of ARRAY-RANK.
480 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
481 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
483 * optimization: result of call to VECTOR can now be stack allocated.
484 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
485 as long as the resulting array is one-dimensional and has a known
486 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
487 length of the list matches the known length of the vector does not
488 allocate the list as an intermediate step. Ditto for VECTOR and simple
490 * optimization: MAKE-ARRAY can now stack allocate in the presence of
491 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
492 known element type, and is known to be simple and one dimensional.
493 * improvement: SBCL now emits a compiler note where stack allocation was
494 requested but could not be provided (not in all cases, unfortunately)
495 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
496 * improvement: pretty-printing loop has been implemented properly. (thanks
497 to Tobias Rittweiler)
498 * documentation: CLOS slot typechecing policy has been documented.
499 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
500 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
501 pointer, leading to memory faults. (thanks to Bart Botta)
502 * bug fix: better floating point exception handling on x86/OpenBSD.
503 (thanks to Josh Elsasser)
504 * bug fix: exit status from QUIT when called under --script was lost
505 (reported by Hubert Kauker)
506 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
507 same implementation of FILL to initialize the array, even if a more
508 efficient one was available (reported by Stas Boukarev, thanks to
510 * bug fix: potential miscompilation of array stack allocation on x86 and
511 x86-64. (reported by Time Tossavainen)
512 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
513 result in their subforms being treated as top level forms. (reported by
515 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
516 than a machine register could leave garbage in the high bits of the
517 result register (bug 316325).
518 * bug fix: disable address space randomization Linux/x86-64 as well,
519 not just x86-64. (reported by Ken Olum)
520 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
521 generate incorrect code.
522 * bug fix: #201; type inference for CONS and ARRAY types could derive
523 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
524 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
525 could not be assigned to or bound with PROGV. (reported by Lorenz
527 * bug fix: the value of CL:- in the inspector was the previous expression
528 evaluated rather than the expression being evaluated.
529 * bug fix: constants can no longer be locally declared special.
530 * bug fix: signals delivered to threads started from foreign land (read:
531 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
532 thread by blocking all signals and resignalling.
533 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
534 from :INITFORM, if any.
536 changes in sbcl-1.0.28 relative to 1.0.27:
537 * a number of bugs in cross-compilation have been fixed, with the ultimate
538 result that building under (at least) clisp should be much more reliable.
539 * minor incompatible changes: echo-streams now propagate unread-char to the
540 underlying input stream, and no longer permit unreading more than one
542 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
543 frames, allowing for instance more reliable backtraces.
544 * improvement: the debugger REPL can now reference lexical variables
545 by name directly for code compiled with (DEBUG 3).
546 * improvement: errors from malformed declarations now have better source
547 paths associated with them. (thanks to Tobias Rittweiler)
548 * optimization: faster local calls on x86/x86-64
549 * bug fix: some error messages for out-of-bound array indexes confused the
550 index and the bound. (thanks to Stas Boukarev)
551 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
553 * bug fix: running regressions tests in shells without OSTYPE set now works.
554 (reported by Harald Hanche-Olsen)
555 * bug fix: more robust static space exhaustion signalling from
556 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
557 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
558 docstring away instead of storing it under names such as (LAMBDA (X)).
559 (reported by Leslie Polzer)
560 * bug fix: timers could go off in the wrong order, be delayed indefinitely
561 (thanks to Ole Arndt for the patch)
562 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
563 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
564 potentially-invalid effective methods in its cache.
565 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
566 instances as well (thanks to Paul Khuong)
567 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
568 SB-POSIX:WAITPID and their C equivalents.
569 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
571 changes in sbcl-1.0.27 relative to 1.0.26:
572 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
573 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
574 * improvement: the system either recovers from stack exhaustion or dies
575 properly as opposed to leaving the user uncertain of whether the handler
576 trampled on some random memory next to the stack or having to rely on
577 --lose-on-corruption (which is still a good idea to use in production
578 because stack exhaustion can happen in signal handlers which will likely
580 * bug fix: fix gc related interrupt handling bug on ppc (regression from
581 1.0.25.37, reported by Harald Hanche-Olsen)
582 * bug fix: work around signal delivery bug in darwin (regression from
583 1.0.25.44, reported by Sidney Markowitz)
584 * bug fix: fix ERROR leaking memory (reported by David Thompson)
586 changes in sbcl-1.0.26 relative to 1.0.25:
587 * incompatible change: an interruption (be it a function passed to
588 INTERRUPT-THREAD or a timer function) runs in an environment where
589 interrupts can be enabled. The interruption can use
590 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
591 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
592 potentially running out of stack. Keep in mind that in the absence
593 of WITHOUT-INTERRUPTS some potentially blocking operation such as
594 acquiring a lock can enable interrupts.
595 * incompatible change: GC-OFF and GC-ON are removed, as they were
596 always unsafe. Use WITHOUT-GCING instead.
597 * new feature: runtime option --disable-ldb
598 * new feature: runtime option --lose-on-corruption to die at the
599 slightest hint of possibly non-recoverable errors: running out of
600 memory, stack, alien stack, binding stack, encountering a memory
601 fault, etc. In the absence of --lose-on-corruption a warning is
603 * enhancement: detect binding stack exhaustion
604 * enhancement: detect alien stack exhaustion on x86/x86-64
605 * improvement: generally more stable and reliable interrupt handling
606 * improvement: there is a per thread interruption queue,
607 interruptions are executed in order of arrival
608 * improvement: a repeating timer reschedules itself when the it has
609 finished, but expiration times are spaced equally. If an
610 expiration time is in the past it will trigger after a short grace
611 period that may give a chance to other things to run.
612 * optimization: slightly faster gc on multithreaded builds
613 * optimization: faster WITHOUT-GCING
614 * bug fix: when JOIN-THREAD signals an error, do it when not holding
615 important locks so that the debugger/handler doesn't produce
616 recursive errors or deadlock.
617 * bug fix: real-time signals are not used anymore, so no more
618 hanging when the system wide real-time signal queue gets full.
619 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
621 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
622 * bug fix: fix random memory faults related to interrupts on alpha
623 * bug fix: fix random memory faults related to interrupts on sparc
624 * bug fix: fix deadlocks related to starting threads
625 * bug fix: fix deadlines on locks on futex platforms
626 * bug fix: restore errno in signal handlers
627 * bug fix: fix deadlocks related to hash tables
628 * bug fix: fix deadlocks in pcl
630 changes in sbcl-1.0.25 relative to 1.0.24:
631 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
632 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
633 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
634 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
635 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
636 better name and does not return values so stale on multiprocessor systems.
637 Also, HOLDING-MUTEX-P was added for about the only sane usage of
639 * improvement: unithread builds keep track of MUTEX-VALUE.
640 * improvement: reading from a TWO-WAY-STREAM does not touch the output
641 stream anymore making it thread safe to have a concurrent reader and
642 a writer, for instance, in a pipe.
643 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
644 arguments, making compiler-macros for SETF-functions able to inspect
645 their constant arguments.
646 * improvement: COMPILE-FILE reports times with millisecond accuracy
647 (thanks to Luis Oliveira)
648 * optimization: CHAR-CODE type derivation has been improved, making
649 TYPEP elimination on subtypes of CHARACTER work better. (reported
650 by Tobias Rittweiler, patch by Paul Khuong)
651 * bug fix: setting alien structure fields of type struct by value now
652 computes the right offset for the memory copy.
653 * bug fix: compilation problem involving inlined calls to aliens with
654 result type VOID. (reported by Ken Olum)
655 * bug fix: #235a; sequential inline expasion in different policies no
656 longer reuses the functional from the previous expansion site.
657 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
658 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
659 * bug fix: named ENUMs in multiply-referenced alien record types no longer
660 cause an implied type redefinition. Regression from 1.0.21.29.
661 * bug fix: sign-extension of small signed return values now works with C
662 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
663 * improvements to the Windows port:
664 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
665 Westfold, thanks to Rudi Schlatte)
667 changes in sbcl-1.0.24 relative to 1.0.23:
668 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
669 vector of a multidimensional SIMPLE-ARRAY.
670 * new feature: the system now signals a continuable error if standard
671 readtable modification is attempted. (thanks to Tobias Rittweiler)
672 * new feature: DIRECTORY has been extended with a non-standard keyword
673 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
674 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
675 has been robustified and documented better. (thanks to Robert Goldman)
676 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
677 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
678 * tradeoff: constant FORMAT control strings are now compiled unless
679 SPACE > SPEED (previously only when SPEED > SPACE.)
680 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
682 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
684 * bug fix: lexical type declarations are now correctly reported by
685 SB-CLTL2. (reported by Larry D'Anna)
686 * bug fix: STRING-TO-OCTETS did not handle :START properly when
687 using UTF-8 as external format. (thanks to Luis Oliveira)
688 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
689 are signalled correctly. (thanks to Stas Boukarev)
690 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
691 designator. (thanks to Tobias Rittweiler)
692 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
693 designator, and returns T instead of the function. (thanks to
695 * bug fix: direct superclasses of STANDARD-CLASS and
696 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
697 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
698 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
699 when no class with the named slot yet exists no longer causes a
700 compile-time style-warning.
701 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
702 in safe code. (reported by Didier Verna)
703 * bug fix: #430; nested structure constructors can stack allocate.
704 * bug fix: on some 64-bit platforms dynamic space size was truncated
705 to #xffff0000 bytes. (reported by Benjamin Lambert)
706 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
707 REPL unusable. (reported by Daniel Herring)
708 * bug fix: return values of READ-SEQUENCE did not take :START into
709 account on file streams, regressions since 1.0.12.22. (reported by
710 Thomas Russ, patch by Paul Khuong)
711 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
712 method specializer used to confuse permuation vector optimization.
713 * bug fix: system inserted bogus implicit type declarations for local
714 special variables in DEFMETHOD bodies.
715 * bug fix: #354; duplicated frames in backtraces due to
716 non-tail-call-optimized XEPs to functions with return type NIL
718 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
719 initializes structure object slots according to DEFSTRUCT initforms,
720 and DEFSTRUCT forms :INCLUDEind structure classes defined using
721 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
722 (reported by Bruno Haible and Stephen Wilson)
723 * bug fix: #395; fill-pointer output streams used now support
724 element-type BASE-CHAR as well.
725 * bug fix: compiler error when attempting to derive return value of
726 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
728 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
730 * bug fix: Mac OS X binaries should now be portable between Leopard
733 changes in sbcl-1.0.23 relative to 1.0.22:
734 * enhancement: when disassembling method functions, disassembly
735 for the associated fast function is also produced.
736 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
738 * optimization: printing with *PRINT-PRETTY* true is now more
739 efficient as long as the object being printed doesn't require
740 special handling by the pretty printer.
741 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
742 now interact correctly with type declarations.
743 * partial bug fix: PCL detects infinite recursion during wrapper
744 validation. (thanks to Attila Lendvai)
745 * bug fix: #426; nested function calls are inlined properly.
746 Previously if FOO was an inline function, in calls of the form
747 (FOO (FOO ...)) the outer call was not inlined.
748 * bug fix: long long arguments passed in registers to alien
749 functions on PowerPC Linux and NetBSD are now handled correctly
750 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
752 changes in sbcl-1.0.22 relative to 1.0.21:
753 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
754 for the shared object in the current directory, but passes the native
755 namestring of the designated pathname to the operation system's shared
756 object loading function as-it.
757 * minor incompatible change: --disable-debugger toplevel option now takes
758 effect before processing of initialization files and --eval or --load
760 * new feature: new commandline argument: --script, which supports
761 shebang lines. See documentation for details. (based on work by
763 * new feature: SAVE-LISP-AND-DIE can save current values of
764 --dynamic-space-size and --control-stack-size in the executable core,
765 causing it to skip normal runtime option processing. See documentation
766 for details. (thanks to Zach Beane)
767 * enhancement: inoccous calls to EVAL or generic functions dispatching
768 on subclasses of eg. STREAM no longer cause compiler notes to appear.
769 * enhancement: the system no longer resignals errors from --load and
770 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
771 associated with the original error to be lost. (thanks to Ariel
773 * enhancement: :DONT-SAVE keyword argument has been added to
774 LOAD-SHARED-OBJECT for controlling interaction with
775 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
776 the effects of an earlier LOAD-SHARED-OBJECT call.
777 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
778 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
779 provided. (reported by Cedric St-Jean)
780 * bug fix: circularity handling in the reader did not treat raw
781 structure slots correctly. (reported by Cedric St-Jean)
782 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
783 file descriptors when there were none.
784 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
785 was broken. (reporteed by Willem Broekema)
786 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
787 pathnames without a directory.
788 * bug fix: COMPILE-FILE did not warn about undefined variable
789 references at toplevel, and LOAD of the resulting fasl did
791 * bug fix: functions with non-required arguments used to end up with
792 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
793 * bug fix: redefining a function with non-required arguments didn't
794 update the system's knowledge about its call signature properly.
795 * bug fix: fixed #431; incompatible alien record type redefinitions
796 are detected and handled. (reported by Neil Haven)
797 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
798 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
800 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
801 after alien stack frames.
802 * bug fix: strings passed to mk{s,d}temp lacked null termination
804 changes in sbcl-1.0.21 relative to 1.0.20:
805 * new feature: the compiler is able to track the effective type of a
806 generic function across method addition and removal.
807 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
808 appropriately typed structure slots without locking.
809 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
810 information like those gathered by TIME using a programming-friendly
812 * new feature: TIME reports time taken even if the form performs a
813 non-local transfer of control.
814 * enhancement: reduced conservativism on GENCGC platforms: on
815 average 45% less pages pinned (measured from SBCL self build).
816 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
817 mutate constant symbols or violate declaimed type of the symbol.
818 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
819 sleeping on the semaphore in heavily contested semaphores.
820 * bug fix: semaphores and condition variables were not interrupt
822 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
823 owned by other threads anymore.
824 * bug fix: FIND on lists called KEY outside the specified
825 subsequence. (reported by budden)
826 * bug fix: LOG doesn't use single-float intermediate results when
827 given mixed integer and double-float arguments, leading to better
828 precision. (reported by Bob Felts)
829 * bug fix: LOG with base zero returned values of inconsistent type.
831 changes in sbcl-1.0.20 relative to 1.0.19:
832 * minor incompatible change: OPTIMIZE qualities
833 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
834 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
835 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
836 * documentation: some slot access efficiency guidelines have been
837 added to the user manual.
838 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
839 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
840 as ASSOC and MEMEBER.
841 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
842 to more efficient EQ-comparison versions more often.
843 * optimization: enhanced derivation of DOLIST iteration variable type
845 * optimization: constant folding of simple (LIST ...) forms as DOLIST
847 * optimization: runtime lookup of function definitions can be
848 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
849 * optimization: compiler is able to derive the return type of
850 (AREF (THE STRING X) Y) as being CHARACTER.
851 * optimization: CLRHASH on empty hash-tables no longer does pointless
852 work. (thanks to Alec Berryman)
853 * optimization: REPLACE deftransforms don't punt when :START1 or
855 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
856 no longer emits a code deletion note. (reported by Andrew
858 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
859 functions with an odd number of &OPTIONAL arguments, a &REST
860 argument, and one or more &KEY arguments at the call site.
861 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
862 arguments appeared at call sites as well.
863 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
864 READ-LINE &co can no longer read from them afterwards. (reported
866 * bug fix: fixed #427: unused local aliens no longer cause compiler
867 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
869 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
870 alien-stack leakage. (reported by Andy Hefner)
871 * bug fix: PROGV signals an error when an attempt to violate declared
872 type of a variable or bind a constant is made.
873 * bug fix: SET signals an error when an attempt to violate declared
874 type of a variable is made.
875 * bug fix: restart computation during the execution of a restart
876 test function no longer causes infinite recursion. (reported by
878 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
879 signals an error. (thanks to Pierre Mai)
880 * bug fix: EXPORT left symbol unexported in conflict situations.
881 (thanks to Michael Weber)
882 * bug fix: correctly handle name conflicts involving CL:NIL.
883 (thanks to Michael Weber)
884 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
885 conflicts arising from USEing package with conflicting symbols
886 correctly. (thanks to Michael Weber)
888 changes in sbcl-1.0.19 relative to 1.0.18:
889 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
890 warnings that go otherwise unhandled will be muffled if they are
891 of the type that's the value of this variable.
892 * optimization: stack allocation is slightly more efficient on x86
894 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
895 where a raw slot always is initialized using the initform whose
896 type is not know sufficiently well a compile-time are now compiled
897 correctly. (reported by John Morrison)
898 * bug fix: compiler no longer makes erronous assumptions in the
899 presence of non-foldable SATISFIES types.
900 * bug fix: stack analysis missed cleanups of dynamic-extent
901 arguments in non-let-converted calls to local functions.
902 * improvements to the Windows port:
903 ** adjusted address spaces for building on both Win32 and
904 Win64. (thanks for John Connors)
905 * fixed some bugs revealed by Paul Dietz' test suite:
906 ** interval arithmetic during type derivation used inexact integer
907 to single-float coercions.
908 ** arithmetic operations involving large integers and single
909 floats give the same results in compiled and interpreted code.
910 ** deriving the result type of COERCE no longer signals an error
911 if the derived type of the second argument is a MEMBER type
912 containing invalid type specifiers.
913 ** ADJOIN with constant NIL as second argument works correctly.
914 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
916 changes in sbcl-1.0.18 relative to 1.0.17:
917 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
918 profiles only the current thread.
919 * minor incompatible change: changes to SYMBOL-VALUE of constants
920 defined with DEFCONSTANT now signal an error.
921 * enhancement: SB-SPROF now has support for wallclock profiling,
922 and is also able to profile specific threads. REPORT output
923 has also additional sorting options.
924 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
926 * optimization: structure allocation has been improved
927 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
928 ** out of line constructors are ~10% faster.
929 ** inline constructors are ~15% faster.
930 ** inline constructors are capable of dynamic extent allocation
931 (generally on x86 and x86-64, in some cases on other platforms
933 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
935 * optimization: file compiler is now able to coalesce non-circular
936 lists, non-base strings, and bit-vectors. Additionally, constants
937 are never referenced through SYMBOL-VALUE at runtime.
938 * optimization: code defining methods on PRINT-OBJECT (and other
939 generic functions in the COMMON-LISP package) now loads faster.
940 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
942 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
943 fasl is now deleted. (reported by Attila Lendvai)
944 * bug fix: READ-LINE always returned NIL for the last line in files.
945 (reported by Yoshinori Tahara)
946 * bug fix: more accurate disassembly annotations of foreign function
947 calls. (thanks to Andy Hefner)
948 * bug fix: trimming non-simple strings and non-string string
949 designators when the there is nothing to trim works properly.
950 (thanks to James Knight)
951 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
952 (thanks to Travis Cross)
953 * fixed some bugs revealed by Paul Dietz' test suite:
954 ** NIL is a valid function name (regression at 1.0.13.38)
955 ** FILL on lists was missing its return value (regression at 1.0.12.27)
956 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
957 fill pointers properly (regression at 1.0.12.23)
958 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
959 displacement indices properly (regression at 1.0.12.23)
961 changes in sbcl-1.0.17 relative to 1.0.16:
962 * temporary regression: user code can no longer allocate closure
963 variable storage on stack, due to bug 419 without explicitly
964 requesting it. Please consult sbcl-devel for advice if you need to
965 use this feature in the meanwhile.
966 * new feature: runtime argument --control-stack-size can be used to
967 adjust thread default control stack size.
968 * enhancement: improved TIME output
969 ** all times are reported using the measured accuracy (milliseconds
970 for real and GC times, microseconds for everything else.)
971 ** processor cycle counts on x86 and x86-64.
972 ** interpreted forms are counted for both evaluator modes.
973 ** number of lambdas converted by the compiler is reported.
974 ** CPU percentage report (computed from real and total run time.)
975 ** more comprehensive run time reporting, using a condenced format
976 ** interperted form, lambda, and page fault counts are omitted
978 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
980 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
981 * optimization: two argument forms of LAST are upto ~10% faster
982 in normal SPEED policies.
983 * optimization: NCONC no longer needs to heap cons its &REST list
984 in normal SPEED policies.
985 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
987 * bug fix: UNION and NUNION work with :TEST-NOT once more,
988 regression since 1.0.9.1. (thanks to Eric Marsden)
989 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
990 since 1.0.15.36. (thanks to Paul Khuong)
991 * bug fix: LAST when always returned the whole list when given a bignum
992 as the second argument.
993 * bug fix: dynamic extent allocation of nested lists and vectors
994 could leak to otherwise accessible parts.
995 * bug fix: invalid optimization of heap-allocated alien variable
997 * bug fix: fasl header checking is less vulnerable to different
998 platform word lengths.
999 * bug fix: more correct assembler syntax for GNU binutils
1000 2.18.50.0.4 support. (thanks to Marijn Schouten)
1001 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1003 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1004 declarations) successfully. (reported by Attila Lendvai)
1006 changes in sbcl-1.0.16 relative to 1.0.15:
1007 * minor incompatible change: revert the changes to sb-posix's error
1008 signaling added in 1.0.14.
1009 * minor incompatible change: change PROBE-FILE back to returning
1010 NIL whenever we can't get a truename, as was the case before 1.0.14.
1011 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1012 inherits from ERROR instead of just CONDITION.
1013 * new feature: SB-INTROSPECT can provide source locations for instances
1014 as well. (thanks to Tobias Rittweiler)
1015 * optimization: binding special variables now generates smaller code
1016 on threaded platforms.
1017 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1018 and cases where no :TEST is given but the compiler can infer that
1019 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1020 * optimization: better LOGNOT on fixnums.
1021 * optimization: modular arithmetic for a particular requested width
1022 is implemented using a tagged representation unless a better
1023 representation is available.
1024 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1025 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1026 for wellformedness and returns a specialized vector. (reported by
1027 Francois-Rene Rideau)
1028 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1029 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1030 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1031 unscheduling timer at the same time as another timer fires.
1032 * bug fix: don't reschedule timers for dead threads.
1033 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1034 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1035 bogus errors if select() was interrupted.
1036 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1038 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1039 * enhancement: cleaner backtraces for interactive interrupts, as
1040 well as other cases where the interesting frames used to be
1041 obscured by interrupt handling frames.
1042 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1043 now supported, and tracing a whole package using (TRACE "FOO") now
1044 traces SETF-functions as well.
1045 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1046 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1047 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1048 * unreadably printed representation of hash-tables now includes
1050 * bug fix: partially fixed #188: type propagation from assignments
1051 is now more efficient.
1052 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1053 'DOUBLE-FLOAT) are not flushable.
1054 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1055 full address of the object, and none of the tag bits.
1056 * bug fix: readably printing hash-tables now respects other printer
1057 control variables. (reported by Cedric St-Jean)
1058 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1059 keyword with MAKE-HASH-TABLE.
1060 * bug fix: export SB-POSIX:MKSTEMP.
1061 * bug fix: SORT was not interrupt safe.
1062 * bug fix: XREF accounts for the last node of each basic-block as
1064 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1065 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1066 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1067 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1068 create obsolete instances in the case of redefinition or
1069 obsoletion of a superclass. (thanks to Andy Hefner)
1070 * bug fix: Support for the Alpha architecture has been revived; it had
1071 suffered somewhat from lack of maintenance since sbcl-1.0.
1072 * improvements to the Windows port:
1073 ** The system detects the codepage to use at startup, instead of
1074 using the value from the saved core. (thanks to Kei Suzuki)
1076 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1077 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1078 (see documentation for details.)
1079 * revived support for OpenBSD (contributed by Josh Elsasser)
1080 * partially fixed bug #108: ROOM no longer suffers from occasional
1081 (AVER (SAP= CURRENT END)) failures.
1082 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1083 bodies no longer cause a WARNING to be signalled. (reported by
1085 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1086 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1087 the bug in TRUNCATE.) (reported by Michael Weber)
1088 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1089 no samples. (reported by Andy Hefner)
1090 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1091 no longer appear as (NIL ...) frames in backtraces.
1092 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1093 is now actually exported from SB-EXT as documented. (reported by
1095 * bug fix: sb-aclrepl now correctly understands how to inspect
1096 single-floats on 64-bit platforms where single-floats are not boxed.
1097 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1098 yet been finalized. (reported by Levente Meszaros)
1099 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1100 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1101 SBCL-specific optimize qualities.
1103 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1104 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1105 an executable in the search path, and does so in the child
1106 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1107 been removed; it can be found in the CVS history, for somebody who
1108 needs that search behavior (see the manual).
1109 * minor incompatible change: compiler policy re. weakening type
1110 checks has changed: now type checks are weakened only if SAFETY < 2
1112 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1113 unparsing of directory pathnames as files. Analogously,
1114 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1115 filename to parse into a directory pathname.
1116 * enhancement: implicit generic function creation now signals a
1117 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1118 users can bind handlers for and muffle around calls to LOAD.
1119 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1120 to be used (using the default stream external format), and allows
1121 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1122 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1123 strings and vectors whose element-type or simplicity is not fully
1124 known at compile-time.
1125 * optimization: STRING-TRIM and related functions no longer allocate
1126 a new string when no trimming needs to be performed. These functions
1127 are also faster than before when the input string has been declared
1129 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1130 * optimization: READ-LINE is significantly faster for files containing
1132 * optimization: non-open coded uses of character comparison operators
1133 (e.g. char=) no longer cons when called with more than one parameter
1134 on platforms supporting dynamic-extent allocation.
1135 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1136 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1137 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1139 * bug fix: some sequence functions elided bounds checking when
1141 * bug fix: too liberal weakening of union-type checks when SPEED >
1143 * bug fix: more bogus fixnum declarations in ROOM implementation
1146 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1147 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1148 :SYNCHRONIZED argument, which makes the hash-table safe for
1149 concurrent accesses (but not iteration.) See also:
1150 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1151 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1152 * optimization: CONCATENATE on strings is an order of magnitude faster
1153 in code compiled with (> SPEED SPACE).
1154 * optimization: SUBSEQ is ~50% faster on lists.
1155 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1156 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1157 END is smaller then START.
1158 * bug fix: SB-PROFILE will no longer report extra consing for nested
1159 calls to profiled functions.
1160 * bug fix: ROOM implementation had bogus fixnum declarations which
1161 could cause type-errors when calling ROOM on large images.
1162 * bug fix: if file compilation is aborted, the partial fasl is now
1163 deleted, and COMPILE-FILE returns NIL as the primary value.
1164 * bug fix: number of thread safety issues relating to SBCL's internal
1165 hash-table usage have been fixed.
1166 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1167 be returned from its body when the values were being returned
1168 using unknown-values return convection and the W-P-O was wrapped
1169 inside an UNWIND-PROTECT.
1170 * bug fix: sb-posix should now compile again under Windows, enabling
1171 slime to work again.
1173 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1174 * incompatible change: hash-table accessor functions are no longer
1175 automatically protected by locks. Concurrent accesses on the same hash-table
1176 from multiple threads can give inconsistent results or even corrupt the
1177 hash-table completely. Multi-threaded applications should do their own
1178 locking at the correct granularity. In the current implementation it is
1179 still safe to have multiple readers access the same table, but it's not
1180 guaranteed that this property will be maintained in future releases.
1181 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1182 and will signal an error at runtime.
1183 * enhancement: SB-THREAD package now exports a semaphore interface.
1184 * enhancement: CONS can now stack-allocate on x86 and
1185 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1187 * enhancement: nested lists can now be stack allocated on
1188 platforms providing stack allocation support.
1189 * enhancement: dynamic-extent support has been extended to support
1190 cases where there are multiple possible sources for the stack
1192 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1193 if the mutex is uncontested on Linux.
1194 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1195 as specified by the CLHS. (thanks to Tobias Rittweiler)
1196 * bug fix: NaN comparison now works on x86-64.
1197 * bug fix: CLOSE :ABORT T on a stream with pending output now
1199 * bug fix: instances of non-standard metaclasses using standard
1200 instance structure protocol sometimes missed the slot type checks
1202 * bug fix: known functions can be inlined in high-debug code.
1204 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1205 * minor incompatible change: the MSI installer on Windows no longer
1206 associates .lisp and .fasl files with the installed SBCL.
1207 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1208 on Windows. (thanks to Luis Oliviera)
1209 * new feature: SB-CLTL2 contrib module now implements
1210 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1211 * optimization: scavenging weak pointers is now more efficient,
1212 requiring O(1) instead of O(N) per weak pointer to identify
1213 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1214 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1215 method bodies using constant slot-names when the first argument is
1216 a specializer parameter for the method.
1217 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1218 names, when the class of the instance is a direct instance
1219 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1220 as slow as the constant slot-name case.)
1221 * optimization: member type construction is now O(N) instead
1223 * optimization: UNION and NUNION are now O(N+M) for large
1224 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1226 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1227 now more readable in environments like Slime which display it.
1228 (thanks to Tobias C. Rittweiler)
1229 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1230 was able to infer the correct argument type for the object on which
1231 the CAS operation was being performed.
1232 * bug fix: copy propagation interfered with parallel assignment
1233 semantics in local calls. (reported by Paul Khuong)
1234 * bug fix: the signed modular fixnum shift compiled to wrong code on
1235 x86 and x86-64. (spotted by a slight modification to some of
1238 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1239 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1240 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1241 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1243 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1244 and generic function now print the object identity for anonymous
1245 instances. (thanks to Attila Lendvai)
1246 * enhancement: as an extension to MOP, SBCL now supports SETF of
1247 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1248 (thanks to Attila Lendvai)
1249 * enhancement: sb-cover has an alternate annotation mode which puts
1250 the form annotations at the car of the form, instead of annotating
1251 it completely. The benefit of this mode is that it shows better
1252 which forms were instrumented by the compiler.
1253 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1254 by printer control variables. (reported by Dan Corkill)
1255 * bug fix: system leaked memory when delayed output was performed by
1256 the OS in smaller chunks then expected. (thanks to David Smith)
1257 * bug fix: system leaked memory when file streams were not closed
1259 * bug fix: large objects written to slow streams that were modified
1260 after the write could end up with the modified state written to
1261 the underlying file descriptor.
1262 * bug fix: multiple threads operating in parallel on the same stream
1263 could cause buffer-overflows.
1264 * bug fix: source location information is stored correctly
1265 (broken since 1.0.6). This bug would generally show up as the
1266 Slime debugger highlighting the wrong form when the sldb-show-source
1268 * bug fix: Branch forms are again annotated as branches in the sb-cover
1270 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1271 on x86-64. (reported by Gregory Vanuxem)
1272 * bug fix: EQUALP could return wrong results for structures with raw
1273 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1274 word). (reported by Vjacheslav Fyodorov)
1275 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1278 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1279 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1280 atomic compare-and-swap operations on threaded platforms.
1281 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1282 allows assigning a global minimum value to optimization qualities
1283 (overriding proclamations and declarations).
1284 * enhancement: closed over variables can be stack-allocated on x86
1286 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1288 * optimization: slot definition lookup is now O(1). This speeds up
1289 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1290 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1291 * optimization: ASSOC and MEMBER can now be open-coded for all
1292 combinations of keyword arguments when second argument is constant
1293 and SPEED >= SPACE. In other cases a specialized version is
1295 * bug fix: using obsoleted structure instances with TYPEP and
1296 generic functions now signals a sensible error.
1297 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1298 (reported by Kristoffer Kvello)
1299 * bug fix: backtrace construction is now more careful when making
1300 lisp-objects from pointers on the stack, to avoid creating bogus
1301 objects that can be seen by the GC.
1302 * bug fix: defaulting of values in contexts expecting more than 7
1303 variables now works on x86-64. (reported by Christopher Laux)
1304 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1306 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1307 as the property-list of a symbol.
1308 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1309 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1310 situations requested, are once again file-compileable. (reported
1313 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1314 * MOP improvement: support for user-defined subclasses of
1315 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1316 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1317 the expansion of DEFMETHOD, is responsible for generating a form
1318 which creates a list of specializers when evaluated. Additional
1319 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1320 debugging and introspective support.
1321 * minor incompatible change: the (unsupported) spinlock interface
1322 has changed: free spinlock now has the value NIL, and a held spinlock
1323 has the owning thread as its value.
1324 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1325 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1327 * enhancement: name of a socket-stream is now "a socket" instead of
1328 "a constant string".
1329 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1330 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1331 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1332 for generic functions. (Thanks to Tobias C. Rittweiler)
1333 * optimization: bignum printing speed has been improved by 20-40%
1334 (depending on the bignum size.)
1335 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1337 * bug fix: the cache used by the CLOS to store precomputed effective
1338 methods, slot offsets, and constant return values is now thread and
1340 * bug fix: generic function dispatch function updating is now thread
1341 and interrupt safe (in the sense that the known issues have been
1343 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1344 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1345 * bug fix: asdf systems with dependencies to the SB-POSIX or
1346 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1347 * bug fix: interrupt safety of applicable method computation has been
1350 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1351 * new contrib: sb-cover, an experimental code coverage tool, is included
1352 as a contrib module.
1353 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1354 significantly faster.
1355 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1356 produce more efficient code on x86-64 if the compiler can determine
1357 that (+ INDEX <constant>) does not require a bounds check and FOO
1358 has an element type at least 8 bits wide.
1359 * enhancement: a new, experimental synchronous timeout facility is
1360 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1361 * enhancement: when a symbol name conflict error arises, the
1362 conflicting symbols are always printed with a package prefix.
1363 (thanks to Kevin Reid)
1364 * enhancement: stepping is now once again supported on the SPARC and
1365 MIPS platforms. (It is also now more likely to work on CheneyGC
1367 * enhancement: sb-sprof can now also track and report accurate call
1369 * bug fixes: the treatment of non-standard subclasses of
1370 SB-MOP:SPECIALIZER is more correct.
1371 * incompatible change: PURIFY no longer copies the data from the
1372 dynamic space into the static and read-only spaces on platforms
1373 that use the generational garbage collector
1374 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1376 * bug fix: GC race condition occasionally resulting in crashes with
1377 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1379 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1381 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1382 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1383 * bug fix: an asynchronous interrupt could previously leave the
1384 system running with GC inhibited.
1385 * bug fix: a DECLARE form evaluated at top-level now causes an error
1386 rather than silently (or verbosely) returning NIL.
1387 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1388 result in a error being signalled due to source form lookup errors.
1389 (reported by Peter Graves)
1391 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1392 * incompatible change: removed writer methods for host-ent-name,
1393 host-ent-addresses -- changing the values did not update the DNS
1395 * minor incompatible change: changed experimental JOIN-THREAD interface
1396 * documentation: the manual now lists reader and writer methods
1397 in class slot documentation sections. (thanks to Richard M Kreuter)
1398 * documentation: unwinding from asyncronous events has been
1399 documented as unsafe.
1400 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1401 in multithreaded application code.
1402 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1403 platforms. (thanks to James Anderson for the optimization hint)
1404 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1406 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1407 variants no longer cons.
1408 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1409 their NOT- variants no longer cons.
1410 * optimization: EQUAL hash tables no longer use SXHASH for objects
1411 of all data types, but instead use an EQL hash for types for which
1412 EQUAL is the same as EQL.
1413 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1414 are significantly faster.
1415 * optimization: new STRING-OUTPUT-STREAM implementation is much
1416 faster for large outputs and conses 30% less on average.
1417 * enhancement: XREF information is now collected for references made
1418 to global variables using SYMBOL-VALUE and a constant argument.
1419 * enhancement: SIGINT now causes a specific condition
1420 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1421 * bug fix: FILE-POSITION used to signal an error in some cases where
1422 ANSI requires it to return NIL.
1423 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1424 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1425 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1427 * bug fix: bad type declaration in the CLOS implementation has
1428 been fixed. (reported by James Anderson)
1429 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1430 (thanks to Lutz Euler)
1431 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1432 required by the CLHS. (reported by Samium Gromoff)
1433 * bug fix: dead unbound variable references now signal an error.
1434 (reported by Marco Monteiro)
1435 * bug fix: / with an unused value was being deleted in safe code.
1436 (thanks to Marco Monteiro and Kevin Reid)
1437 * bug fix: number of characters that can be written onto a single
1438 line in a file is unlimited.
1439 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1440 been fixed by inhibiting interrupts for when GC is disabled.
1441 * bug fix: some interrupt safety issues with GETHASH, (SETF
1442 GETHASH), CLRHASH and REMHASH have been fixed.
1443 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1444 specifier no longer causes infinite recursion.
1445 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1446 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1447 * bug fix: an &environment argument with the correct variable information
1448 is passed to macros that are expanded during byte compilation.
1449 (reported by Samium Gromoff)
1450 * bug fix: a logic error was causing the hash function for bignums to
1451 have excessive amounts of collisions. (reported by Faré Rideau)
1452 * bug fix: modifying the contents of an array could change the return
1453 value of SXHASH on that array, which is only allowed for strings
1454 and bit vectors. (bug introduced in 0.9.16)
1455 * improvement: the x86-64/darwin port now passes all tests (except
1456 for the debugger tests) but should still be considered
1457 experimental until this is fixed.
1458 * improvement: a style-warning is signaled for CASE (etc) clauses with
1459 duplicate keys. (thanks to Kevin Reid)
1460 * improvement: macos/x86 and macos/x86-64 now use mach exception
1461 handlers for dealing with illegal instructions (for trapping and
1462 error handling) and memory protection violations (for GC).
1464 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1465 * new platform: experimental support for x86-64/darwin (MacOS).
1466 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1467 and getnameinfo sockets functions are used instead of gethostbyaddr
1468 and gethostbyname, on platforms where the newer functions are available.
1469 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1471 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1472 don't print the startup banner, but behave as if --noinform was passed
1473 as a command line argument. (thanks to Kevin Reid)
1474 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1475 * optimization: code using alien values with undeclared types is much faster.
1476 * optimization: the compiler is now able to open code SEARCH in more cases.
1477 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1478 * bug fix: using standardized COMMON-LISP special variables as loop
1479 variables no longer signals bogus package lock violations. (reported
1481 * bug fix: declaring local loop variables to be of a range-limited type
1482 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1483 (reported by Andras Simon)
1484 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1485 bugs remain on x86-64.)
1486 * bug fix: the #= and ## reader macros now interact reasonably with
1487 funcallable instances.
1488 * bug fix: type-checks for function arguments were compiled using the
1489 compiler policy settings of the wrong lexical environment (in 1.0.2
1491 * bug fix: SHADOW accepts characters as string designators, as required
1492 by the spec (thanks to Eric Marsden)
1493 * bug fix: fixed GC safety issues when foreign functions are called with
1494 non-base strings as arguments
1495 * bug fix: more consistent error output for fatal-compiler-warnings, like
1497 * bug fix: functions with proper names were showing up as NIL in
1498 backtraces (reported by Edi Weitz, regression in 1.0.2)
1500 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1501 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1502 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1503 produce more efficient code on the x86 if the compiler can determine
1504 that (+ INDEX <constant>) does not require a bounds check and FOO
1505 has an element type at least 8 bits wide.
1506 * bug fix: references to undefined variables are handled the same way
1507 in toplevel forms as in the normal compiler
1508 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1510 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1511 (thanks to Jon Buller)
1512 * improvement: faster compilation times for complex functions
1513 * improvement: added readlink support to SB-POSIX (thanks to Richard
1516 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1517 * improvement: experimental support for mach exception handling on
1518 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1520 * improvement: support for GBK external format.
1521 (thanks to Chun Tian (binghe))
1522 * improvement: the debugger now displays variables that have been closed
1523 over, in code compiled with (DEBUG 2) or higher
1524 * improvement: support for executable cores on NetBSD (thanks to
1526 * new feature: added a RESTART-FRAME debugger command
1527 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1528 be used to provide an implementation for FILE-POSITION on Gray streams
1529 (thanks to Eric Marsden)
1530 * new feature: add syslog, openlog and closelog support to SB-POSIX
1531 (thanks to Richard Kreuter)
1532 * optimization: the function call overhead in code compiled with
1533 a high DEBUG optimization setting is significantly
1534 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1535 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1536 (thanks to Tony Martinez)
1537 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1538 evaluated once (reported by Kevin Reid)
1539 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1540 works again (thanks to Kilian Sprotte)
1541 * bug fix: an error is signaled for tagbodies with duplicate tags
1542 (thanks to Stephen Wilson)
1543 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1544 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1545 stack frames from alien callbacks.
1546 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1547 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1548 65k pages (thanks to David Woodhouse)
1549 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1551 changes in sbcl-1.0.1 relative to sbcl-1.0:
1552 * new platform: FreeBSD/x86-64, including support for threading.
1553 * new feature: the compiler stores cross-referencing information
1554 about function calls (who-calls), macroexpansion (who-macroexpands)
1555 and special variables (who-binds, who-sets, who-references) for code
1556 compiled with (< SPACE 3). This information is available through the
1557 sb-introspect contrib.
1558 * new feature: users may subclass SEQUENCE, and have instances of
1559 these classes interoperate with standard Common Lisp functions if
1560 a number of methods are defined. (This feature is experimental
1561 and the interface subject to change based on feedback from SBCL
1562 users and the general community)
1563 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1564 x86/x86-64, rather than the previous fixed depth of 8
1565 * improvement: another pthread back-end of mutex "pthread-futex".
1566 * bug fix: non-ascii command-line arguments are processed correctly
1567 (thanks to Yaroslav Kavenchuk)
1568 * bug fix: non-required arguments were not passed correctly when a method
1569 defined using DEFMETHOD was called from a mop-generated method using
1570 CALL-NEXT-METHOD (reported by Pascal Costanza)
1571 * bug fix: recursion is now permitted in accessors through
1572 SLOT-UNBOUND. (reported by Pascal Costanza)
1573 * bug fix: an error was signaled at startup if the HOME environment
1574 variable was defined, but had an empty value (reported by Peter Van Eynde)
1575 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1576 signal a PROGRAM-ERROR, not a BUG.
1577 * bug fix: SB-POSIX:READDIR works when built with large file support.
1578 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1580 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1581 for better automatic indentation support. (thanks to Matt Pillsbury)
1582 * optimization: loading generic functions no longer takes O(n^2) time,
1583 proportional to the amount of methods in the generic function
1584 (reported by Todd Sabin and Jeremy Brown)
1585 * optimization: the FIND and POSITION family of sequence functions
1586 are significantly faster on arrays whose element types have been
1588 * improvements to the Windows port:
1589 ** Intermittent heap corruption problems have been fixed. (thanks
1590 to Alastair Bridgewater)
1591 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1593 ** Lisp is able to unwind foreign exception frames from alien
1594 callbacks. (thanks to Alastair Bridgewater)
1596 changes in sbcl-1.0 relative to sbcl-0.9.18:
1597 * improvement: experimental support for threading on FreeBSD/x86.
1598 (thanks to NIIMI Satoshi)
1599 * improvement: runtime option --dynamic-space-size can be used
1600 to set the size of the dynamic space reserved on startup.
1601 * improvement: floating point modes in effect are now saved in
1602 core, and restored on startup.
1603 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1604 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1605 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1606 threads are not running after *SAVE-HOOKS* have run.
1607 * improvement: writes to CLOS instance slots are type-checked in code
1608 compiled with (SAFETY 3)
1609 * improvement: floating-point exception handling on FreeBSD (thanks to
1611 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1612 (thanks to Zach Beane)
1613 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1615 * improvement: added support for the Shift-JIS external format.
1616 (contributed by NIIMI Satoshi)
1617 * improvement: callbacks are supported on Linux/PPC. (thanks to
1619 * bug fix: compiler bug triggered by a (non-standard) VALUES
1620 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1621 * bug fix: file compiler no longer confuses validated and already
1622 dumped structurres. (reported by Kaersten Poeck)
1623 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1624 fill-pointer signals a type-error as required. (thanks to
1626 * bug fix: disassemly of funcallable instances works.
1627 * bug fix: single stepping on PPC.
1628 * bug fix: fix thread-safety problems in the type system (generally
1629 manifesting as nonsensical errors like "STRING is a bad type specifier
1630 for sequences" or "The value 1 is not of type FIXNUM")
1631 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1632 (reported by Josip Gracin)
1633 * bug fix: an error is signaled for attempts to displace arrays with
1634 incompatible element types (thanks to Mario Mommer)
1635 * bug fix: more correct handling of wide characters in debug info
1636 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1637 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1638 and don't cause extra consing
1639 * optimization: MAP and MAP-INTO are significantly faster on vectors
1640 whose elements types have been declared.
1641 * Improvements to SB-SPROF:
1642 ** Support for allocation profiling
1643 ** Reduced profiling overhead, especially for long profiling runs
1644 * Improvements to the Windows port:
1645 ** floating point exceptions are now reported correctly.
1646 ** stack exhaustion detection works partially.
1647 ** more accurate GET-INTERNAL-REAL-TIME.
1648 ** better RUN-PROGRAM behaviour in case of errors in the child
1650 ** PROBE-FILE now simplifies pathnames correctly.
1651 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1652 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1653 1st 1970 (although time timezone data will be unreliable).
1654 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1656 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1657 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1658 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1660 * bug fix: two potential GC deadlocks affecting threaded builds.
1661 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1662 returns T (reported by Anton Kazennikov)
1663 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1664 with non-variable places
1665 * bug fix: remove a race condition in the setting of
1666 funcallable-instance functions, this should make threaded CLOS
1667 code more stable against memory faults.
1668 * bug fix: corruption of specials when unbinding is interrupted by an
1669 asynchronous unwind (reported by Hannu Koivisto)
1670 * improvement: the debugger will now also display local variables that
1671 are only used once, for code compiled with a DEBUG optimization quality
1674 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1675 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1676 * incompatible change: External-format support for FFI calls. The
1677 SB-ALIEN:C-STRING no longer implies an ASCII
1678 external-format. Instead the string is subject to external-format
1679 conversion. Additionally return values of type SB-ALIEN:C-STRING
1680 are by default of type (SIMPLE-ARRAY CHARACTER), not
1681 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1682 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1683 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1684 * incompatible change: SB-EXT package no longer contains the
1685 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1686 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1688 * incompatible change: the single-stepper is no longer available
1689 on Alpha, Mips and Sparc platforms.
1690 * minor incompatible change: the direct superclasses of
1691 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1692 not (STANDARD-OBJECT FUNCTION). This makes the
1693 class-precedence-lists of GENERIC-FUNCTION and
1694 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1696 * minor incompatible change: the default stream external format on
1697 non-unicode SBCL is no longer detected from the locale, but is always
1699 * new feature: Add a version of evaluator that uses an interpreter instead
1700 of the compiler. EVAL still uses the compiler by default, to switch it
1701 to use the interpreter, set the value of the variable
1702 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1703 * minor incompatible change: the single-stepper REPL has been merged
1704 with the normal debugger (see the "Stepping" heading of the debugger help
1705 for more details). The debugger command STEP will no longer switch
1706 to the single-stepper REPL.
1707 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1708 for a type now works.
1709 * bug fix: loading of default sysinit file works. (thanks to Leonid
1711 * bug fix: better detection of circularities in the file-compiler.
1712 (reported by Marco Monteiro)
1713 * bug fix: the CL pathname functions now work with files that have
1714 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1715 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1716 systems with Unix98 pty semantics.
1717 * bug fix: ASDF-INSTALL will now work with bsd tar.
1718 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1720 * bug fix: timers expiring in dead threads no longer cause a
1721 type-error (reported by Paul "Nonny Mouse").
1722 * bug fix: thanks to more lightweight single-stepper instrumentation,
1723 code compiled with (DEBUG 3) will compile and execute significantly faster,
1724 and will have more accurate type-inferencing than before
1725 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1726 whose bindings are modified
1727 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1728 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1729 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1730 CL:SOFTWARE-VERSION with proper version
1732 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1733 * feature: implemented the READER-METHOD-CLASS and
1734 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1735 as specified by AMOP.
1736 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1738 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1739 (thanks to Lutz Euler)
1740 * optimization: hashing of general arrays and vectors has been
1741 improved. (reported by Any Fingerhut)
1742 * enhancement: SB-INTROSPECT is now able to find definitions of
1743 profiled functions. (thanks to Troels Henriksen)
1744 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1745 as well, allowing compiler-macros for SETF-functions to expand.
1746 * enhancement: step-instrumentation no longer wraps known
1747 single-value functions with multiple-value context, allowing
1748 better type inference.
1749 * fixed bug #337: use of MAKE-METHOD in method combination now works
1750 even in the presence of user-defined method classes. (reported by
1751 Bruno Haible and Pascal Costanza)
1752 * fixed bug #339(c): if there are applicable methods not part of any
1753 long-form method-combination group, call INVALID-METHOD-ERROR.
1754 (reported by Bruno Haible)
1755 * fixed bug #361: the :FUNCTION initarg in the protocol for
1756 initialization of methods can now be used to override
1757 internally-produced optimized functions. (reported by Bruno
1759 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1760 system-provided lambda expression no longer cause warnings about
1761 unbound #:|pv-table| symbols.
1762 * bug fix: improved the handling of type declarations and the
1763 detection of violations for keyword arguments with non-constant
1765 * bug fix: potentially erronous calls to PATHNAME and
1766 MERGE-PATHNAMES were being flushed in some cases.
1767 (reported by Richard Kreuter)
1768 * bug fix: compiled calls to TYPEP were mishandling obsolete
1769 instances. (reported by James Bielman and Attila Lendvai)
1770 * bug fix: format strings with ~> without matching ~< no longer
1771 trigger an AVER, but signal an understandable error instead.
1772 (reported by Antonio Martinez)
1773 * bug fix: specifying an output-file without a pathname-type for
1774 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1775 of input-file instead of "fasl". (reported by Robert Dodier)
1776 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1777 (reported by James Y Knight).
1778 * bug fix: compiler-macros-function did not consider the environment
1779 argument for shadowing by local functions.
1780 * bug fix: compiler-macros expansion was inhibited by local INLINE
1782 * bug fix: inline expansions of known functions were subject to
1783 step-instrumentation in high debug policies, leading to problems
1784 with type-inference.
1785 * bug fix: compiler failed to differentiate between different CONS
1786 types in some cases.
1787 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1788 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1789 * bug fix: #368: incorrect use of expressed vs. upgraded array
1791 * bug fix: #306a: more precise unions of array types.
1792 * thread-safety improvements:
1793 ** CONDITION-WAIT could return early on Linux, if the thread was
1794 interrupted and subsequently continued with SIGCONT.
1795 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1797 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1798 * added support for the ucs-2 external format. (contributed by Ivan
1800 * minor incompatible change: pretty printing of objects of type
1801 (cons symbol) is, in the default pprint-dispatch-table, now
1802 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1804 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1805 called later in a class's lifetime, possibly as late as when the
1806 first instance of the class is created. Previously,
1807 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1808 class became finalizeable.
1809 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1810 for multibyte external-format streams. (thanks to "vbzoli")
1811 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1812 with :ALLOCATION :CLASS inherited from superclasses of the
1814 * fixed bug: anonymous classes can now be created using the :NAME
1815 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1816 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1817 * fixed bug: core-files saved with :EXECUTABLE T can again be
1818 executed when SBCL_HOME isn't set. (reported by James Knight)
1819 * fixed bug: toplevel LOCALLY forms with declarations could
1820 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1821 * fixed bug: printing from several different threads using different
1822 values of *print-case* could cause invalid output, due to
1823 some internal special variables of the printer not being bound
1824 thread-locally (reported by Max Mikhanosha)
1825 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1826 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1827 (reported by Pascal Costanza)
1828 * fixed bug: FINALIZE-INHERITANCE is called from
1829 REINITIALIZE-INSTANCE on classes when the class has previously
1830 been finalized, as required by AMOP.
1831 * minor code generation optimizations:
1832 ** better register allocation in CLOS dispatching functions
1833 ** overflow detection when coercing signed bytes to fixnums on x86-64
1834 ** is now implemented with one IMUL instruction instead of three shifts
1835 ** more efficient bit-vector access on x86 and x86-64
1836 ** more efficient access to raw structure slots on x86 and x86-64
1837 * fixed some bugs revealed by Paul Dietz' test suite:
1838 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1839 return its argument.
1841 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1842 * feature: thread support on Solaris/x86, and experimental thread support
1844 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1846 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1847 default method for SLOT-UNBOUND.
1848 * minor incompatible change: prevent the user from specializing the
1849 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1850 somewhat counter to the intent of the protocol, I (CSR) think, and
1851 additionally it just doesn't work in SBCL as currently
1852 implemented, thanks to optimizations (that are always valid for
1853 the other three SLOT-VALUEish functions, but not for the setter).
1854 * minor incompatible change: the :SB-LDB feature is now enabled by
1855 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1856 the low-level debugger.
1857 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1858 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1859 down to an SB-SYS:FD-STREAM, allowing direct communication in
1860 more cases. Temporary files and pipes are still used as a fallback
1862 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1863 on the non-reentrant C functions localtime(3) and gmtime(3).
1864 * bug fix: global optimization policy was not visible in LOCALLY and
1866 * bug fix: class objects can be used as specializers in methods.
1867 (reported by Pascal Costanza)
1868 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1869 with a type error. (reported by blitz_ on #lisp)
1870 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1871 failed with a type error. (reported by Pascal Bourguignon)
1872 * bug fix: merging pathnames against defaults with :DIRECTORY
1873 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1874 (reported by James Y Knight)
1875 * bug fix: saving large (>2GB) cores on x86-64 now works
1876 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1877 constant index and a (simple-array (signed-byte 32)) array
1878 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1879 error (patch by Robert J. Macomber)
1880 * feature: TIME now displays the amount of run-time spent in GC
1881 * bug fix: The debugger now does a better job of respecting
1882 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1883 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1884 workaround for bug 403.)
1885 * bug fix: floating point exception handling now works on FreeBSD
1886 (thanks to NIIMI Satoshi)
1887 * fixed some bugs revealed by Paul Dietz' test suite:
1888 ** MISC.641: LET-conversion were not supposed to work in late
1890 * improvements to the Win32/x86 port:
1891 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1892 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1894 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1895 * new feature: source path information is generated for macro-expansion
1896 errors for use in IDE's like Slime (thanks to Helmut Eller)
1897 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1898 * bug fix: compiler does not loop forever on an invalid type in
1900 * improvement: compilation of most CLOS applications is significantly
1902 * optimization: added a limited bytecode compiler for simple toplevel
1903 forms, speeding up compilation and FASL loading
1904 * bug fix: the statistical profiler now properly distinguishes anonymous
1907 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1908 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1909 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1910 into subclasses of the finalized class. Now user calls to
1911 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1912 system return before any subclasses are finalized.
1913 * minor incompatible change: The reader no longer ignores errors
1914 regarding non-existent packages in #+ and #- feature tests.
1915 * new feature: command line options --no-sysinit, --no-userinit to
1916 inhibit loading the corresponding init files
1917 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1918 for sending data through UDP sockets (thanks to François-René Rideau)
1919 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1920 error is signalled instead (thanks to François-René Rideau)
1921 * minor incompatible change: Error signalling behaviour of lexical
1922 operations violating package locks has changed slightly. Refer to
1923 documentation on package locks for details.
1924 * enhancement: EVAL can process IF-expressions without resorting to the
1926 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1927 constant-folded properly due to missing out-of-line functions.
1928 (reported by Mika Pihlajamäki)
1929 * bug fix: LISTEN sometimes returned T even in cases where no data was
1930 immediately available from the stream
1931 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1932 were reversed. (reported by Levente Mészáros)
1933 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1934 when given a vector displaced to an adjustable array. (reported
1936 * bug fix: derivation of float boundaries from numbers outside the
1937 appropriate float range (reported by John Wiseman)
1938 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1940 * bug fix: precomputing cache entries for generic functions with
1941 some subclasses of specializers as yet invalid does not attempt to
1942 fill a cache line with a negative offset. (reported by Levente
1944 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1945 allow condition class objects as arguments to DOCUMENTATION and
1946 (SETF DOCUMENTATION); only find and set documentation for
1947 structure names for the STRUCTURE doc-type. (suggested by Gary
1949 * improvements to the Win32/x86 port:
1950 ** (user-homedir-pathname) and default initialization file
1951 locations now know about the user's "Documents and Settings"
1952 directory (thanks to Yaroslav Kavenchuk)
1953 ** run-program is implemented (thanks to Mike Thomas)
1954 ** sockets support (thanks to Timothy Ritchey)
1955 ** better backtrace support (thanks to Alastair Bridgewater)
1956 ** sb-grovel supported
1957 ** asdf-install and sb-posix work somewhat
1958 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1959 * improvements to the Solaris/x86 port:
1960 ** works on Solaris 11/Solaris Express
1961 ** floating-point exception handling support
1962 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1963 * fixed some bugs revealed by Paul Dietz' test suite:
1964 ** REMOVE-METHOD returns its generic function argument even when
1965 the method is not one of the generic functions' methods.
1966 ** objects declared as MEMBER types can be admissible arguments to
1967 structure accessors.
1968 ** printing characters should simply be printed by the FORMAT ~:C
1970 ** compiler failure when compiling functions with hairy constant
1971 defaults for optional parameters.
1972 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1973 function, which is already optimized.
1975 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1976 * new platform: experimental support for SBCL x86/Darwin, including
1977 MacOS X 10.4.5 on Intel.
1978 * new feature: Unicode character names are now known to the system
1979 (through CHAR-NAME and NAME-CHAR).
1980 * new feature: the filesystem location of SBCL's core file is
1981 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1982 * minor incompatible change: the contrib modules SB-POSIX and
1983 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1984 this change is to make it easier to distribute
1985 location-independent binaries.
1986 * bug fix: as implied by AMOP, standardized classes no longer have
1987 slots named by external symbols of public packages. (reported by
1989 * optimization: calling functions via constant symbols -- as in
1990 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1991 via the function object as in (FUNCALL #'FOO).
1992 * optimization: on x86 and x86-64, the calling convention for the
1993 case of dealing with an unknown number of values has been altered
1994 to be friendlier to the prediction heuristics implemented,
1995 particularly with reference to CALL and RET pairing. (thanks to
1996 Alastair Bridgewater)
1997 * optimization: on x86, the code for access to thread-local symbol
1998 values and binding/unbinding of thread-local symbols is smaller.
1999 (thanks to Alastair Bridgewater)
2000 * enhancement: CONSTANTP is now able to determine constantness of
2001 more complex forms, including calls to constant-foldable standardized
2002 functions and some special forms beyond QUOTE.
2003 * fixed bug: occasional GC crashes on Solaris/x86
2004 * optimization: x86-64 supports stack allocation of results of simple
2005 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2006 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2007 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2008 (thanks to James Knight)
2009 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2010 by the standard (thanks to Stephen Compall)
2012 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2013 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2014 be used for bundling the runtime and the core file into one
2015 executable binary. This feature is not currently supported on all SBCL
2016 platforms. (thanks to James Bielman and NIIMI Satoshi)
2017 * new feature: a generational or ephemeral garbage collector is now
2018 the default on the PowerPC platform (both Linux and Darwin). The
2019 old Cheney (stop and copy) collector is a build-time option.
2020 (thanks to Cyrus Harmon, after Raymond Toy)
2021 * minor incompatible change: the method by which SBCL finds its
2022 contributed modules has changed; it no longer relies on symbolic
2023 links from an $SBCL_HOME/systems directory, but searches directly
2024 in the subdirectories of $SBCL_HOME.
2025 * enhancement: the dynamic heap size on the Linux/PPC platform is
2026 markedly larger, even using the older Cheney garbage collector.
2027 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2028 certain complicated string types. (reported by Gary King)
2029 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2030 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2031 * fixed bug: DOCUMENTATION on structures no longer signals an
2032 error if no structure type of the right name exists. (reported by
2034 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2035 applicable non-standard primary or :AROUND method on
2036 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2037 no longer cause unbound variable errors. (reported by Kevin Reid)
2038 * fixed bug: metacircle resolution in cases where methods have slots
2039 added before the slots from STANDARD-METHOD. (reported by Jean
2041 * fixed bug: the Power PC assembly code for calling into lisp
2042 sometimes computed its return address wrongly (depending on the
2043 15th bit of the address, fixed at link time). This used to
2044 manifest itself in a segmentation violation while building PCL.
2045 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2046 many others over the years)
2047 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2048 the stack pointer (treated as a signed integer) is negative.
2049 (thanks to Peter van Eynde)
2051 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2052 * new platform: experimental support for the Windows operating
2053 system has been added. (thanks to Alastair Bridgewater)
2054 * fixed several bugs in and robustified the PPC FFI (including
2055 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2056 * bug fix: allow non-simple string symbol names (reported by Paul
2058 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2060 * bug fix: saving a core corrupted callbacks on x86/x86-64
2061 * bug fix: closed a loophole in metacircularity detection and
2062 grounding in the PCL implementation of CLOS.
2063 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2064 (reported by tomppa on #lisp)
2065 * bug fix: clear the direction flag on Lisp -> C transitions, as
2066 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2067 (reported by Andrej Grozin and Hendrik Maryns)
2068 * optimization: major improvements to GC efficiency on GENCGC platforms
2069 * optimization: faster implementation of EQUAL
2070 * optimization: emit more efficient opcodes for some common
2071 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2072 * optimization: several other minor code-generation improvements on x86-64
2073 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2075 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2076 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2077 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2078 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2079 by ANSI as a generic function, and for consistency (SETF
2080 GENERIC-FUNCTION-NAME) is treated likewise.
2081 * fixed bug #233.b: make constraint propagation notice when a variable
2082 value is changed after it is referenced but before it is used
2083 * fixed bug #296: no more arbitrary behaviour from filenames with
2084 odd characters as --load arguments. (reported by Adam Warner)
2085 * fixed bug #390: :CHARACTER-SET pathname components now work as
2086 expected. (reported by Tim Daly Jr)
2087 * fixed bug #391: complicated :TYPE intersections in slot
2088 definitions no longer cause an error in PCL internals.
2089 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2090 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2091 returning the number of octets which would be written to the
2092 file-stream. (thanks to Robert J. Macomber)
2093 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2094 arguments to the internal stream functions. (thanks to David
2096 * bug fix: stack exhaustion is now handled on the x86/SunOS
2097 platform. (thanks to Daisuke Homma)
2098 * bug fix: more accurate ROOM results on GENCGC platforms
2099 * optimization: improved type inference for arithmetic-for
2100 index variables in LOOP
2101 * optimization: faster floating-point SQRT on x86-64
2102 * fixed some bugs revealed by Paul Dietz' test suite:
2103 ** DOCUMENTATION returns NIL instead of "" for method combinations
2104 that don't have a docstring
2106 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2107 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2108 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2109 therefore are not customizeable by user code (as seems to be at
2110 least permitted and maybe required by AMOP). As a consolation,
2111 however, the SBCL implementation of these functions now calls
2112 REINITIALIZE-INSTANCE as specified by AMOP.
2113 * bug fix: slot-definition documentation is propagated as per ANSI
2114 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2115 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2116 argument, as do eslotd initialization methods. (from Pascal
2117 Costanza's "Closer" project)
2118 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2119 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2121 * bug fix: it is now possible to have more than one subclass of
2122 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2123 (reported by Bruno Haible, Pascal Costanza and others)
2124 * bug fix: the dependent update protocol now works for generic
2125 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2126 and Pascal Costanza)
2127 * bug fix: condition-class instances corresponding to
2128 DEFINE-CONDITION forms are now created eagerly. (reported by
2129 Kalle Olavi Niemitalo on comp.lang.lisp)
2130 * bug fix: floating point printing is more accurate in some
2131 circumstances. (thanks to Simon Alexander)
2132 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2133 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2134 * bug fix: callbacks on OS X now preserve stack-alignment.
2135 (thanks to Cyrus Harmon)
2136 * enhancement: the x86-64 disassembler is much better at
2137 disassembling SSE instructions. (thanks to Lutz Euler)
2138 * enhancement: CHECK-TYPE on a variable now allows type-inference
2139 (thanks to Vincent Arkesteijn)
2140 * optimization: improved performance of EUC-JP external format.
2141 (thanks to NIIMI Satoshi)
2142 * optimization: performance improvements to IO on file streams of
2143 :ELEMENT-TYPE CHARACTER
2144 * optimization: much faster memory allocation on x86-64
2145 * optimization: faster garbage collections (latency and throughput)
2147 * optimization: faster bignum subtraction and division on x86 and x86-64
2148 (thanks to Lutz Euler)
2149 * optimization: more accurate type-inference for loops that use a
2150 floating point index variable or a negative step.
2152 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2153 * bug fix: add a workaround to SBCL looping infinitely at startup on
2154 Linux kernels with apparently buggy implementations of personality().
2155 (thanks to Svein Ove Aas)
2156 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2157 (thanks to David Lichteblau)
2158 * bug fix: local bindings shadow global symbol macros for
2159 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2160 * optimization: non-open coded uses of numeric comparison operators
2161 (e.g. >) no longer cons when called with more than one parameter
2162 on platforms supporting dynamic-extent allocation.
2163 * enhancement: saving cores with foreign code loaded is now supported
2164 on MIPS/Linux in addition to the previously supported platforms.
2165 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2166 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2167 * bug fix: division by zero in sb-sprof when no samples were collected
2168 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2169 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2170 (thanks to Alexander Kjeldaas)
2171 * new feature: ignoring the return values of destructive functions
2172 like NREVERSE signals a compile-time style-warning.
2173 (thanks to Kevin Reid)
2174 * new feature: the alignment of alien structure fields can be
2175 explicitly specified. (thanks to Cyrus Harmon)
2176 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2177 and dump core on SIGQUIT
2179 ** incompatible change: threads do not inherit values of specials
2180 from their parents (see manual)
2181 ** bug fix: threads stacks belonging to dead threads are freed by the
2182 next exiting thread, no need to gc to collect thread stacks anymore
2183 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2184 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2185 ** bug fix: dynamic variable and thread start related gc lossage
2186 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2188 * fixed some bugs revealed by Paul Dietz' test suite:
2189 ** SUBTYPEP is slightly more accurate on heinously complicated
2190 CONS types where some of the members have uncertain (in the
2191 NIL, NIL sense) type relationships to each other.
2193 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2194 no longer purified unless :PURIFY T is explicitly specified.
2195 ** Non-purified cores are significantly smaller than before
2197 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2198 * new feature: timers based on Zach Beane's excellent timer package
2199 * added support for the following external formats: koi8-u,
2200 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2201 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2202 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2203 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2204 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2205 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2206 * incompatible change: a threaded SBCL will no longer revert to
2207 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2208 * bug fix: interrupts are disabled until startup is complete; no
2209 more sigsegvs when receiving a signal to soon
2210 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2212 * bug fix: add a workaround for the memory randomization features in
2213 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2214 workaround will only be in effect on systems with the proc filesystem
2216 * bug fix: printing objects of type HASH-TABLE signals a
2217 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2219 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2220 have been running for over 50 days. (reported by Gilbert Baumann)
2221 * bug fix: the logic for getting names of functions gets less
2222 confused when confronded with alternate-metaclass
2223 funcallable-instances. (reported by Cyrus Harmon)
2224 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2225 consistent, even on internal alternate-metaclass objects.
2226 * bug fix: flush closure information collected by physical
2227 environment analysis prepass before the main pass. (bug reported
2229 * bug fix: compiler pack phase does not modify a hashtable, which is
2230 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2231 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2232 may be expanded. (reported by Alexander <malishev> on c.l.l)
2233 * bug fix: no more style-warnings when compiling code using LAST
2234 under high-SPEED low-SPACE settings. (reported by David Wallin
2236 * fixed some incompatibilities between SBCL's MOP and the MOP
2238 ** the METAOBJECT class is now implemented;
2239 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2240 STANDARD-OBJECT, as required;
2241 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2242 now compatible (as required by VALIDATE-SUPERCLASS); there
2243 remains a consistency requirement over the presence or absence
2244 of the FUNCTION class in the superclass list of finalized
2245 classes; see the manual for more details;
2246 ** the :AROUND method for COMPUTE-SLOTS on
2247 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2248 requested slot ordering.
2250 ** bug fix: parent thread now can be gc'ed even with a live
2252 ** bug fix: binding a special with PROGV to no value is not
2253 the same as that symbol not having been bound (thanks to
2255 ** bug fix: binding specials is thread safe (thanks to
2257 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2258 and SB-SPROF do not die with 'no handler for signal XX in
2259 interrupt_handle_now(..)' anymore
2260 ** bug fix: WITH-TIMEOUT works with multiple running threads
2261 * fixed some bugs revealed by Paul Dietz' test suite:
2262 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2263 the :method-class keyword argument.
2265 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2266 * new port: the Solaris operating system on x86 processors is now
2267 mostly supported, though some rough edges in the environment
2268 remain. (thanks to Daisuke Homma)
2269 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2270 space for its heap. (thanks to Thiemo Seufer)
2271 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2272 closures. (thanks to Thiemo Seufer)
2273 * minor incompatible change: eof selects abort in the debugger.
2274 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2275 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2277 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2278 deprecated, and will go away in a future revision of SBCL.
2279 * minor incompatible change: GC-ON and GC-OFF are no longer
2280 implemented with a counter, it does not matter how many times gc
2281 is switched on or off
2282 * bug fix: discriminating functions for generic function classes
2283 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2284 make invalid assumptions about method precedence order. (reported
2286 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2287 platforms. (thanks to Thiemo Seufer)
2288 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2289 * bug fix: correct pathname printing with printer escaping is on.
2290 (thanks to Kevin Reid)
2291 * bug fix: complex VOP definitions in "user-space" no longer trigger
2292 package locks. (reported by Zach Beane)
2293 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2294 for funcallable-instance functions, and is no different from
2296 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2297 characters in the current readtable. (reported by Nicholas Neuss)
2298 * bug fix: SUBTYPEP on various CONS types returns more a more
2299 accurate acknowledgment of its certainty.
2300 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2301 lists in some cases. This partially fixes bug 384.
2302 * flush all standard streams before prompting in the REPL and the
2304 * bug fix: signal handling and triggering gc do not conflict
2305 directly anymore, in particular a high frequency sb-sprof does
2306 not prevent gc from running
2307 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2308 approximation for timezone and DST information between the
2309 universal time epoch and the smallest negative 32-bit time_t.
2310 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2311 year 1899 so long as the encoded time is non-negative.
2312 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2313 the correct answer for non-constant rotate amounts when performing
2314 an inline 32-bit rotation.
2316 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2317 there is only one thread in the session
2318 ** bug fix: memory leak for streams created in one thread and
2319 written to in another
2320 ** bug fix: lockup when compiled with gcc4
2321 ** bug fix: race that allows the gc to be triggered when gc is
2323 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2324 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2326 ** bug fix: finished threads are gc'ed properly
2327 * fixed some bugs revealed by Paul Dietz' test suite:
2328 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2329 has arguments with a different set of applicable methods from
2330 the orignal arguments.
2331 ** The type error thrown by MAP now has a correct expected-type
2333 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2334 name a compiled function.
2335 ** Three MISC tests where a large bignum was improperly coerced to
2336 a float that couldn't represent that bignum during type
2337 derivation were fixed.
2338 ** SUBTYPEP can now handle types involving the negation of a
2339 list-form FUNCTION type.
2340 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2341 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2342 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2344 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2345 * New feature: Experimental support for bivalent streams: streams
2346 opened with :element-type :default now allow character and binary
2347 (unsigned-byte 8) I/O
2348 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2349 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2351 * bug fix: no more highly sporadic "couldn't check whether ~S is
2352 readable" when reading a stream and an interrupt hits in the middle
2353 of a select system call
2354 * compiler better recognizes complex arrays (reported by Eduardo
2356 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2357 for variables on SBCL built with linkage-tables. (reported by Luis
2359 * various error reporting improvements.
2360 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2361 (Thanks to Thiemo Seufer)
2362 * bug fix: nested reader invokations work correctly
2363 * bug fix: it is possible to have simultaneous references to foreign
2364 code and foreign data with the same name.
2366 ** added x86-64 support
2367 ** incompatible change: the threading api now works with thread
2368 objects instead of thread ids
2369 ** bug fix: threads are protected from signals and interruption when
2370 starting up or going down
2371 ** bug fix: a race where an exiting thread could lose its stack to gc
2372 ** bug fix: don't halt on infinite error in threads if possible
2373 ** fixed numerous gc deadlocks introduced in the pthread merge
2374 ** bug fix: fixed thread safety issues in read and print
2375 ** bug fix: debugger doesn't hang on session lock if interrupted at
2376 an inappropriate moment
2377 ** bug fix: run-program is now thread safe(r)
2378 ** bug fix: inner with-recursive-lock no longer releases the mutex
2379 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2380 * fixed some bugs revealed by Paul Dietz' test suite:
2381 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2382 EXPECTED-TYPE slots filled.
2383 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2385 ** MAKE-CONDITION accepts classes as type-designators.
2386 ** COMPILE may never return NIL.
2387 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2388 range before calling Unix time functions
2390 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2391 * numerous signal handling fixes to increase stability
2392 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2393 * minor incompatible change: we now correctly canonize default
2394 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2395 as per the MOP, rather than the historical (INITARG INITFUNCTION
2396 INITFORM). (reported by Bruno Haible)
2397 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2398 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2399 for more information.
2400 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2401 pathname is a directory pathname.
2402 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2403 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2405 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2406 :METACLASS argument in addition to a class name. (reported by
2407 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2408 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2409 (reported by Bruno Haible; patch from Gerd Moellmann)
2410 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2412 * bug fix: more cleanups to the floating point exception handling on
2413 x86-64 (thanks to James Knight)
2414 * bug fix: the compiler does not try to constant fold calls of
2415 COERCE and BIT-* functions when they return freshly constructed
2416 objects. (reported by Nikodemus Siivola and Paul Dietz)
2417 * optimization: improved the MIPS versions of generic (in the
2418 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2419 * optimization: direct conversion of (unsigned-byte 32) to floats on
2420 the PowerPC platform.
2421 * optimization: structure instances with raw slots now use less
2422 memory, and probably show better memory locality. (thanks to
2424 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2425 are treated as requests for stack allocation on the x86-64,
2426 Alpha-32, PPC and SPARC platforms.
2427 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2428 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2429 (thanks to Tony Martinez)
2431 ** gcing a dead thread can no longer lead to lockups
2432 ** threads block signals until they are set up properly
2433 ** errno is no longer shared by threads
2434 ** interrupt-thread restores the eflags register on x86
2435 ** fixed some lockups due to gc/thread interaction
2436 * fixed some bugs revealed by Paul Dietz' test suite:
2437 ** invalid dotted lists no longer raise a read error when
2438 *READ-SUPPRESS* is T
2439 ** signal an error if a symbol that names a declaration is used
2440 as the name of a type, or vice versa
2441 ** allow using the (declare (typespec var*)) abbreviation for
2442 (declare (type typespec var*)) with all type specifiers
2443 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2444 ** always return NIL from PPRINT-POP when OBJECT is NIL
2445 ** don't signal errors when pretty-printing malformed LABELS,
2446 FLET or MACROLET forms
2447 ** declarations in a DOLIST body are also in scope for the
2449 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2451 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2454 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2455 * fixed cross-compiler leakages that prevented building a 32-bit
2456 target with a 64-bit host compiler.
2457 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2458 opened with :IF-EXISTS :OVERWRITE.
2459 * fixed bug 281: error for an invalid qualifier in a short-form method
2460 combination method is not signalled until the faulty method is called.
2461 * bug fix: iteration variable type inferrer failed to deal with open
2462 intervals. (reported by Alan Shields)
2463 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2464 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2465 or more runtime options were provided to the sbcl binary.
2466 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2467 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2468 * optimization: there's now a fast-path for fixnum arguments in the
2469 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2470 * optimization: the code generated on x86-64 is more compact thanks
2471 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2472 * bug fix: floating-point exception handling now partly works on
2473 x86-64. (Thanks to James Knight)
2474 * improvement to the MIPS backend from Thiemo Seufer: C-style
2475 64-bit long long arguments and return values to alien functions
2477 * fixed some bugs revealed by Paul Dietz' test suite:
2478 ** the type-error signalled from WARN has a filled-in DATUM slot.
2479 ** the type-error required when a stream is not associated with
2480 a file has the stream as its datum.
2481 ** type-errors on single-floats on x86-64 no longer have
2482 :INVALID-OBJECT as the datum
2483 ** the type-errors signalled for invalid function names now have
2484 a correct expected type
2485 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2486 for structures defined with a :TYPE. Documentation strings for
2487 typed structures are no longer immediately discarded
2488 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2489 broadcast streams and synonym streams. FILE-LENGTH now also works
2490 on broadcast streams.
2492 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2493 * incompatible change: the --noprogrammer option, deprecated since
2494 version 0.7.5, has been removed. Please use the equivalent
2495 --disable-debugger option instead.
2496 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2498 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2499 inoperational for a while now) has been completely removed.
2500 * null lexical environments are now printed as #<NULL-LEXENV>,
2501 significantly reducing the amount of clutter in typical backtraces.
2502 * documentation on weak pointers, finalization, and after GC hooks
2503 has been added to the manual.
2504 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2505 as other specialized array types, is much faster. SUBSEQ and
2506 COPY-SEQ on such arrays have also been sped up.
2507 * optimization: EQL is now more efficient when at least other argument
2508 is known to be of type (OR FIXNUM (NOT NUMBER)).
2509 * fixed bug: the runtime is now less vulnerable to changes in the
2510 size of the SBCL object on OS X, and virtual memory is reserved for
2511 all spaces that need to be at a fixed address.
2512 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2513 * fixed bug: finalizers and after GC hooks that cause consing are now
2515 * fixed bug: compiler error messages and summaries are now printed to
2516 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2517 * fixed inference of the upper bound of an iteration variable.
2518 (reported by Rajat Datta).
2519 * fixed bug 211e: calling local functions with duplicated constant
2520 keyword argument no longer causes a bogus style warning about an
2522 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2523 ftype declaration to be disregarded. (reported by Dave Roberts)
2524 * fixed bug 373: caused by erronous compilation of references to alien
2525 variables in the runtime on ppc/darwin.
2526 * fixed bug 376: CONJUGATE type deriver.
2527 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2528 (reported by Baughn on #lisp)
2529 * a cross-compiler bug on non-x86 platforms has been identified and
2530 fixed. (thanks to Bruno Haible)
2531 * improvements to the MIPS runtime code for increased stability.
2532 (thanks to Thiemo Seufer)
2533 * increased the maximimum compact environment size to allow
2534 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2535 * partial workaround for bug 135: don't name the function we're
2536 calling for hairy cases of EVAL, so as not to accumulate one environment
2537 entry per call to EVAL. (reported by Kevin Reid)
2538 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2539 * optimization: type testing for non-vector arrays should be faster.
2540 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2542 * bug fix: setting 31st element of a bit vector to zero did not work
2544 * bug fix: redefining a class definition which failed due to a
2545 previous accessor / function clash now works (but see BUGS entry
2546 #380 for more problems in this area). (thanks to Zach Beane)
2547 * the long form of DEFINE-METHOD-COMBINATION disables method group
2548 checking when given a single method group with pattern *. (thanks
2550 * on x86 compiler supports stack allocation of results of simple
2551 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2552 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2553 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2554 * fixed some bugs related to Unicode integration:
2555 ** the restarts for recovering from input and output encoding
2556 errors only appear when there is in fact such an error to
2558 * fixed some bugs revealed by Paul Dietz' test suite:
2559 ** MISC.549 and similar: late transformation of unsafe type
2560 assertions into derived types caused unexpected code
2562 ** SCALE-FLOAT type deriver is less wrong.
2563 ** type derivers for EXP, LOG and similar functions compute result
2564 types for complex arguments better.
2565 ** (MISC.563) CONJUGATE type deriver works for very restricted
2567 ** out-of-line type testers for character strings are available.
2568 ** EQUAL compiler transform understands specialness of objects
2570 ** accessing double-floats stored on the stack now works on x86-64.
2571 ** debugger internals could sometimes create invalid lispobjs,
2572 resulting in GC crashes.
2573 ** MISC.548: type check weakening can convert required type into
2575 ** initialization forms for bindings are not in scope of free special
2578 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2579 * incompatible change: thread support for non-NPTL systems has
2580 been removed - locking is buggy and unreliable. A threaded
2581 SBCL build will now warn at startup and refuse to create
2582 new threads, unless futex support is detected in the kernel
2583 * incompatible change: the top level REPL now has only an ABORT
2584 restart associated with it, not TOPLEVEL and ABORT as it used to.
2585 TOP and TOPLEVEL are now available as debugger commands for
2586 returning to the top level.
2587 * incompatible change: forms evaluated in the REPL now use the
2588 global optimization policy.
2589 * incompatible change: user- and system-initialization files are
2590 no longer processed with LOAD, but by READ and EVAL; hence the
2591 global optimization policy, startup package, readtable, etc,
2593 * The .fasl file format number has been incremented because of
2594 various incompatible changes.
2595 * internal entry point details and argument counts no longer appear
2596 in backtraces unless explicitly requested by setting
2597 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2598 * built-in and standard functions no longer have names like "top
2599 level local call to FOO".
2600 * fixed bug 32: functions defined in non-null lexical environments
2601 now have more legible printed representation
2602 * fixed bug 33: functions defined in non-null lexical environemnts
2603 are now more amenable to inspection by INSPECT.
2604 * workaround for bug 354: XEPs no longer appear in backtraces unless
2605 explicitly requested.
2606 * fixed bug: receiving the signal which results from attempting to
2607 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2608 SIGBUS on other *BSDs) on architectures where the C stack is also
2609 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2610 to debugger confusion or wild instability. (reported by Cheuksan
2612 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2613 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2614 (reported by Lutz Euler)
2615 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2616 compiled code. (reported by Paul Dietz)
2617 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2618 specialized parameter to a method to something that is not TYPEP
2619 the specializer is now possible.
2620 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2621 face of package deletion.
2622 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2623 pathname. (reported by David Tolpin on c.l.l)
2624 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2625 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2626 STRING-STREAM and FILE-STREAM, respectively.
2627 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2628 than previously; in addition, its test suite is now run on build.
2629 (thanks to Luke Gorrie)
2630 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2631 * optimization: added a immediate representation for single-floats
2633 * fixed some bugs revealed by Paul Dietz' test suite:
2634 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2635 ** attempting to create a package with a colliding nickname causes
2636 correctable errors to be signalled.
2637 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2638 ** several x86-64 backend bugs related to sign-extension of immediate
2641 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2642 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2643 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2645 * fixed loading of multiply forward-referenced layouts.
2646 (thanks to Cheuksan Wang)
2647 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2648 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2649 (see COMPILE-FILE documentation for details of :PRINT option)
2650 * fixed bugs 19 and 317: fixed-format floating point printing is
2651 more accurate. This also fixes a bug reported by Adam Warner
2652 related to the ~@F format directive.
2653 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2655 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2656 dispatch table if the from-char is a dispatch macro character.
2657 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2658 by the wordsize no longer ignore the last word. (reported by Lutz
2660 * fixed bug in type checking of dynamic-extent variables. (reported
2662 * optimization: sequence traversal functions use their freedom to
2663 coerce function designators to functions.
2664 * optimization: code with many calls to CLOS methods specialized on
2665 CLOS classes has had redundant type checks removed.
2666 * optimization: added declarations to speed up operations that access
2667 the internal character database (for example STRING-UPCASE)
2668 * optimization: comparison operations between floats and sufficiently small
2669 fixnums no longer create extra rationals
2670 * fixed some bugs related to Unicode integration:
2671 ** portions of multibyte characters at the end of buffers for
2672 character-based file input are correctly transferred to the
2673 start of the buffer at the next read.
2674 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2675 passing it through to OPEN.
2676 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2677 argument given to internal calls to OPEN.
2678 ** the built-in comment readers (introduced by character sequences
2679 ";" and "#|") are more forgiving to encoding errors; they will
2680 STYLE-WARN and then attempt to resync the stream at a character
2681 boundary. (thanks to Teemu Kalvas)
2682 * fixed some bugs in the x86-64 port:
2683 ** Negative short int return values from c-calls are sign-extended
2685 ** The stack is aligned to 16-bytes for c-calls, as required by
2686 the ABI. (thanks to Cheuksan Wang)
2687 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2688 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2689 for enums. (thanks to Vincent Arkesteijn)
2690 ** Multiple small optimizations and bugfixes for floating point
2692 * fixed some bugs revealed by Paul Dietz' test suite:
2693 ** Space, Tab, Linefeed, Return and Page have the invalid
2694 secondary constituent character trait.
2695 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2697 ** WITH-INPUT-FROM-STRING should only update the index place on
2699 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2700 works more reliably.
2701 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2702 with one-dimensional arrays with fill pointers.
2703 ** TYPE-OF failed on a complex with an integer realpart and a
2705 ** compiler failure during type inference for the code of form
2706 (IF (EQL X (THE ...)) ...) (MISC.535).
2708 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2709 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2710 platform. The port supports 61-bit fixnums, large memory spaces
2711 and reloading shared object files.
2712 * enhancement: saving cores with foreign code loaded is now
2713 supported on ppc/Darwin in addition to the previously supported
2715 * enhancement: the statistical profiler now walks deeper into the
2716 call stack for more meaningful call-graphs and accrued time
2717 reports (x86/x86-64 only). It also now reports time spent in
2719 * enhancement: it is now possible to trace most individual methods
2720 of a generic function in addition to tracing the generic function
2722 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2724 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2725 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2726 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2727 produces an error. (thanks to Vincent Arkesteijn)
2728 * bug fix: NAMESTRING on pathnames with :WILD components in their
2729 directories works correctly. (thanks to Artem V. Andreev)
2730 * fixed bug 125: compiler preserves identity of closures. (reported
2732 * bug fixed: functions with &REST arguments sometimes failed with
2733 "Undefined function" when compiled with (DEBUG 3). (reported by
2735 * bug fix: overflow during compiling of setting element of a bit
2736 vector with constant index and value. (reported by Timmy Douglas)
2737 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2738 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2739 * on x86 compiler partially supports stack allocation of dynamic-extent
2741 * GO and RETURN-FROM do not check the extent of their exit points
2742 when compiled with SAFETY 0.
2743 * fixed some bugs related to Unicode integration:
2744 ** encoding and decoding errors are now much more robustly
2745 handled; it should now be possible to recover even from invalid
2746 input or output to the terminal. (thanks to Teemu Kalvas)
2747 ** provided a first cut at implementing STRING-TO-OCTETS and
2748 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2749 ** altered the SB-MD5 contributed module slightly, changing the
2750 interface just enough for it to be supportable for builds where
2751 lisp characters are not eight bits.
2752 * fixed some bugs revealed by Paul Dietz' test suite:
2753 ** the FORMATTER-generated functions for ~V[ conditionals require
2754 the correct number of arguments.
2755 ** READ-FROM-STRING returns the mandated second value when applied
2756 to displaced strings.
2757 ** the #\Rubout and #\Backspace characters are treated as invalid
2758 constituent characters by the tokenizer.
2760 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2761 * new feature: reloading changed shared object files with
2762 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2763 * new feature: references to foreign variables and functions
2764 can now be compiled and loaded before the corresponding shared
2765 object file is loaded, as long as the foreign definitions are
2766 available at runtime.
2767 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2768 supported. (thanks to Dan Debertin)
2769 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2770 just keywords. (thanks to Vincent Arkesteijn)
2771 * fixed bug #331: structure-class instances corresponding to
2772 DEFSTRUCT forms are now created eagerly.
2773 * fixed bug #345: backtraces from calls to undefined functions work
2774 on x86 as well. Related bug #61 is now also partially fixed on x86
2775 (backtraces from throws to unknown catch tags.)
2776 * bug fix: lambda-list parsing is now stricter vrt. order and number
2777 of lambda-list keywords.
2778 * bug fix: as specified by AMOP, an error is signalled if a
2779 class-option appears multiple times in a DEFCLASS form. (reported
2781 * bug fix: RANDOM can be compiled when the compiler derives the type
2782 of its numeric argument as a disjoint set of small integers.
2783 (reported by Paul Dietz)
2784 * bug fix: starting a core saved with shared objects loaded when
2785 those objects are not available no longer causes threaded SBCL to
2786 hang. (reported by Sean Ross)
2787 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2789 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2790 argument, which must always be NIL. (reported by Kalle Niemitalo)
2791 * bug fix: printing 1.0d+23 no longer results in an error.
2792 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2793 * bug fix: structure slot setters preserve evaluation order. (thanks
2795 * fixed some bugs related to Unicode integration:
2796 ** RUN-PROGRAM can allow its child to take input from a Lisp
2797 stream. (reported by Stefan Scholl)
2798 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2799 locales. (reported by Ken Causey)
2800 * fixed some bugs revealed by Paul Dietz' test suite:
2801 ** INCF, DECF and REMF evaluate their place form as specified in
2803 ** FORMATTER expands ~{ ~} iteration directives with V or #
2804 parameters correctly.
2805 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2806 consequent uses no arguments correctly.
2807 ** the system has a partial understanding of the (COMPLEX RATIO)
2809 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2812 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2813 * new feature: a build-time option (controlled by the :SB-UNICODE
2814 keyword feature, enabled by default) for building the system with
2815 support for the entire 21-bit character space defined by the
2817 * new feature: the system now has rudimentary external-format
2818 support; the primary user-visible change at this time is that
2819 characters with the high bit set (such as lower-case-e-acute) will
2820 print correctly to a terminal in a UTF-8 environment.
2821 * minor incompatible change: BASE-CHAR no longer names a class;
2822 however, CHARACTER continues to do so, as required by ANSI.
2823 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2824 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2825 has been moved to the SB-EXT package (temporarily re-exported from
2827 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2828 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2830 * fixed bug #351: better error-handlind and reporting for malformed
2832 * fixed bug #350: bignum-printing is now more memory-efficient,
2833 allowing printing of very large bignums, eg. (expt 2 10000000).
2834 (reported by Bruno Haible)
2835 * fixed bug #302: better primitive-type selection for intersection
2837 * fixed bug #308: non-graphic characters now all have names, as
2838 required. (reported by Bruno Haible)
2839 * bug fix: redefining a class with different superclasses now correctly
2840 removes it from the direct-subclasses of its previous superclasses.
2841 (reported by David Morse)
2842 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2843 new value now works. (reported by Bruno Haible)
2844 * bug fix: correct canonicalization of multiple non-standard slot
2845 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2846 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2847 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2848 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2849 now exists, an signals an error.
2850 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2851 during macroexpansion for non-iteration variables as well. (reported
2852 by Bruno Haible for CMUCL)
2853 * bug fix: Cyclic structures and unprintable objects in compiler
2854 messages no longer cause errors. (reported by Bruno Haible)
2855 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2856 and READ-FROM-STRING all now return a primary value of NIL if
2857 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2858 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2859 (reported by Bruno Haible for CMUCL)
2860 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2861 do not designate a condition. (reported by Bruno Haible for
2863 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2864 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2865 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2866 permitting resolution in favour of any of the conflicting symbols.
2867 (reported by Bruno Haible for CMUCL)
2868 * bug fix: EQUAL compiler optimizations is less aggressive on
2869 strings which can potentially compare true despite having distinct
2870 specialized array element types.
2871 * bug fix: unit enumerations can be defined without dividing by
2872 zero. (thanks to Vincent Arkesteijn)
2873 * FORMAT compile-time argument count checking has been enhanced.
2874 (report from Bruno Haible for CMUCL)
2875 * a partial workaround for the bug 262: the compiler does not try to
2876 inline-expand a local function doing RETURN-FROM from a deleted
2877 BLOCK. (thanks to Peter Denno for the bug report and to David
2878 Wragg for the simple test case)
2879 * fixed some bugs revealed by Paul Dietz' test suite:
2880 ** RENAME-PACKAGE allows all package designators as new package
2882 ** constraint propagation and lambda variable substitution are
2883 more cautious in dealing with partially deleted code.
2884 ** compiler sometimes lost reoptimization passes.
2885 ** CERROR, given a condition as condition designator, passes its
2886 remaining arguments to the continue format control without
2888 ** Case-altering FORMAT directives work correctly on non-ASCII
2890 ** The REAL type specifier handles bounds outside the floating
2891 point ranges without signalling FLOATING-POINT-OVERFLOW.
2892 ** Functions with IR1-transformations can create intercomponent
2893 references to global functions.
2894 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2896 ** FORMAT ~R treats a nil value for its first parameter correctly.
2898 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2899 * enhancement: saving cores with foreign code loaded is now
2900 supported on x86/NetBSD and sparc/Linux in addition to the previously
2901 supported platforms.
2902 * bug fix: on some platforms repeated installations caused multiple
2903 copies of HTML documentation to be installed -- should not happen
2904 any more. (reported by Stefan Scholl)
2905 * bug fix: parsing self-recursive alien record types multiple times
2906 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2907 original patch by Helmut Eller for CMUCL)
2908 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2909 (thanks to Richard Kreuter)
2910 * bug fix: defining classes whose accessors are methods on existing
2911 generic functions in other (locked) packages no longer signals
2912 bogus package lock violations. (reported by François-René Rideau)
2913 * bug fix: special variables as DEFMETHOD parameters no longer have
2914 associated bogus type declarations. (reported by David Wragg and
2916 * bug fix: read-write consistency on streams of element-type
2917 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2918 * bug fix: redefiniton of the only method of a generic function with
2919 no DEFGENERIC no longer emits a full WARNING. In addition,
2920 redefinition of generic functions with no DEFGENERIC to an
2921 incompatible lambda list now signals an error. (thanks to Zach
2923 * bug fix: DEFGENERIC now works even when there's a function of the
2924 same name in an enclosing lexical environment. (thanks to Zach
2926 * fixed compiler failure, caused by instrumenting code during
2927 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2928 * optimization: added loop analysis and improved register allocation
2929 * fixed some bugs revealed by Paul Dietz' test suite:
2930 ** POSITION on displaced vectors with non-zero displacement
2931 returns the right answer.
2932 ** (SIMPLE-STRING) is a valid type specifier for sequence
2934 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2936 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2937 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2939 ** The justification version of the FORMAT ~< directive treats
2940 non-zero minpad parameter correctly.
2942 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2943 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2944 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2945 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2946 the supported interface.
2947 * new feature: Single-stepping of code compiled with DEBUG 2 or
2948 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2949 * new feature: saving cores with foreign code loaded is now
2950 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2951 Timothy Moore's work for CMUCL)
2952 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2953 parameters to * instead of NIL if no initform is supplied.
2954 (reported by Johan Bockgaard)
2955 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2956 correctly when FUNCALL appears as the car of the form. Note:
2957 despite this FUNCALL forms are not currently subject to
2958 compiler-macro expansion. (port of Raymond Toy's fix for the
2959 same from CMUCL, reported by Johan Bockgaard)
2960 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2961 (thanks for Teemu Kalvas)
2962 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2963 case instead of terminating the iteration (thanks for Julian
2964 Squires, Sean Champ and Raymond Toy)
2965 * bug fix: incorrect expansion of defgeneric that caused a style
2966 warning. (thanks for Zach Beane)
2967 * bug fix: slot accessor effective method computation works properly
2968 for classes with multiple non-standard applicable methods on
2969 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2970 * on x86 compiler supports stack allocation of results of LIST and
2971 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2972 CMUCL implementation by Gerd Moellmann)
2973 * fixed some bugs revealed by Paul Dietz' test suite:
2974 ** FORMAT strings with both the ~<~:;~> form of the justification
2975 directive and pretty-printing directives cause an error.
2977 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2978 * incompatible change: the internal functions
2979 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2980 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2981 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2982 instead of the old functions.
2983 * new feature: on platforms where "dladdr" is available foreign
2984 function names now appear in backtraces. (based on Helmut Eller's
2986 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2987 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2989 * documentation: ASDF manual is now distributed with SBCL.
2990 * bug fix: SBCL can now load its contributed modules with REQUIRE
2991 even if the system-provided entries have been removed from
2992 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2994 * bug fix: backtraces involving undefined functions or assembly
2995 routines are more informative. (thanks to Brian Downing)
2996 * bug fix: mutually referent alien structures now work correctly.
2997 (reported by Rick Taube)
2998 * bug fix: structures defined by WITH-ALIEN can be referred to
2999 within other definitions in the same WITH-ALIEN.
3000 * bug fix: division operators (MOD, TRUNCATE and the like) with
3001 constant zero divisors and integer dividends no longer generate
3003 * bug fix: provide default methods for INPUT-STREAM-P and
3004 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3005 * bug fix: improve the detection and resolution of MOP metacycles
3006 (where effective method computation depends on the generic function
3007 having its effective method computed). (reported by Bruno Haible)
3008 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3009 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3010 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3011 * bug fix: pathnames with relative directory components can be
3012 represented relative to default pathnames.
3013 * optimization: in taking the GCD of bignums, reduce the two bignums
3014 to approximately the same size (using Euclid's algorithm) before
3015 applying the more sophisticated binary GCD. (thanks to Juho
3017 * optimization: COUNT on bitvectors now operates word-at-a-time.
3018 * optimization: ASH with a positive, but not necessarily constant,
3019 (leftwards) shift, when in a modular context, is compiled to a
3021 * fixed some bugs revealed by Paul Dietz' test suite:
3022 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3023 if the corresponding argument is NIL.
3024 ** FORMAT directives accepting a minpad parameter treat negative
3026 ** literal commas as character parameters to FORMAT directives are
3028 ** literal spaces directly after ~<Newline> directives within a
3029 format-logical-block (~:< ~@:>) do not induce :FILL-style
3030 conditional newlines.
3031 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3032 as specified: it no longer includes conditional newlines).
3033 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3035 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3036 :PER-LINE-PREFIX argument does not evaluate to a string.
3038 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3039 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3040 the manual for details; for now, package locks can be disabled by
3041 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3042 if no major problems are found then it is likely that they will be
3043 compiled in unconditionally.
3044 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3045 unsupported operators on all platforms. To load a shared library
3046 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3047 object file, link it into a shared library outside of SBCL and
3048 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3050 * bug workaround: ROOM T and the GC were not working together
3051 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3052 reporting facility aren't preserved. That reporting has been
3053 disabled, so now until and unless someone figures out how to make it
3054 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3055 * minor incompatible change: as threatened around sbcl-0.8.0, the
3056 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3057 The symbols are also exported from SB-PCL for backwards
3058 compatibility, but more so than before SB-PCL should be treated as
3059 an implementation-internal package.
3060 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3062 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3063 It is known as of this release not to work on the Alpha, however.
3064 * fixed bug #167: errors signalled due to illegal syntax in method
3065 bodies are now more legible.
3066 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3067 designators and can hence be used with TYPEP.
3068 * fixed bug #333: CHECK-TYPE now ensures that the type error
3069 signalled, if any, has the right object to be accessed by
3070 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3071 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3072 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3074 * fixed bug #334: programmatic addition of slots using specialized
3075 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3076 and :ALLOCATION :CLASS slots.
3077 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3078 float exponents. (rereported by Peter Seibel)
3079 * fixed a bug: #\Space (and other whitespace characters) are no
3080 longer considered to be macro characters in standard syntax by
3081 GET-MACRO-CHARACTER.
3082 * fixed bug: initialization of condition class metaobjects no longer
3083 causes an instance of the condition to be created. (reported by
3085 * fixed bug: it is now possible to have slots such that
3086 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3087 description is neither :INSTANCE nor :CLASS.
3088 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3089 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3090 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3091 non-standard SLOT-DEFINITION-ALLOCATION values.
3092 * fixed bugs: various race conditions handling exiting threads.
3093 CL-PPCRE's thread torture test now passes.
3094 * fixed arguably-a-bug: GC time proportional to number of threads in
3095 system even when most of them are idle
3096 * optimization: improved performance of BIT and SBIT on bit-vectors.
3097 * .fasl file incompatibility: The fasl file version number has
3098 been incremented because of changes associated with package locks.
3100 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3101 * minor incompatible change: the system no longer provides
3102 optimization hints (conditions which are TYPEP
3103 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3104 mode; these hints are still emitted when higher SPEED optimization
3106 * new contrib module: a sampling profiler (profiling by statistical
3107 sampling, rather than by instrumenting functions) is available as
3108 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3109 * the behaviour of the standard function ED is now customizeable by
3110 third parties through a hook variable: see ED's documentation
3111 string for information on the protocol.
3112 * the compiler no longer emits efficiency notes for (FUNCALL X)
3113 when the type of X is uncertain under default optimization
3115 * fixed bug 276: mutating a binding of a specialized parameter to a
3116 method to something that is not TYPEP the specializer is now
3118 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3119 exhibit the required behaviour on the x86 platform. (thanks to
3120 Peter van Eynde, Eric Marsden and Bruno Haible)
3121 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3122 even for difficult arguments. (reported by Peter Graves)
3123 * fixed bug 141a: the backquote printer now descends quoted
3125 * fixed another bug in backquote printing: no more destructive
3126 modification of the form's list structure. (reported by Brian
3128 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3129 move between its address being taken and the call to
3130 interrupt_thread, fixing a crashing race condition.
3131 * the SB-POSIX contrib implementation has been adjusted so that it
3132 no longer exhibits ridiculously poor performance when constructing
3133 instances corresponding to C structs.
3135 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3136 * minor incompatible change: the sb-grovel contrib now treats C
3137 structures as alien (in the sense of SB-ALIEN) objects rather than
3138 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3139 has implications for memory management of client code
3140 (sb-grovel-returned objects must now be manually managed) and for
3141 type safety (alien objects now have full types).
3142 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3143 used to control emission of compiler diagnostics, rather than the
3144 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3145 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3146 quality should be considered deprecated.
3147 * install.sh now installs the user manual as well
3148 * (not quite a new documentable feature, but worth considering in
3149 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3150 beginnings of a semantically meaningful condition hierarchy is
3151 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3153 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3154 designator as the defaults argument.
3155 * fixed bug: Displaced arrays whose displaced-to array has become
3156 too small now cause ARRAY-DIMENSION to signal an error, providing
3157 for safer bounds-checking. (reported by Bruno Haible)
3158 * fixed bug: DEFCLASS slot definitions with identical :READER and
3159 :WRITER names now signal a reasonable error. (reported by Thomas
3161 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3163 * fixed bug: Invalid slot specification errors now print correctly.
3164 (thanks to Zach Beane)
3165 * fixed bug 320: Shared to local slot value transfers in class
3166 redefinitions now happen corrently from superclasses as
3167 well. (reported by Bruno Haible)
3168 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3170 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3171 improper lists correctly. (reported by Bruno Haible)
3172 * fixed bug 313: source-transform for <fun-name> was erroneously
3173 applied to a call of a value of a variable with name <fun-name>.
3174 (reported by Antonio Menezes Leitao)
3175 * fixed bug 307: The obsolete instance protocol ensures that
3176 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3177 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3178 remove dead unknown-values globs from the middle of the stack.
3179 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3180 easier to resume long computations after using *BREAK-ON-SIGNALS*
3181 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3182 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3183 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3184 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3185 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3186 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3188 * fixed a (fairly theoretical) bug in string printing: if
3189 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3190 does not have array-element-type equal to the most general string
3192 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3193 function name. (thanks to Nikodemus Siivola)
3194 * fixed bug: compile-time format string checker failed on
3195 non-closed ~{. (reported by Thomas F Burdick)
3196 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3197 don't warn on legal loop code involving more than one aggregate
3198 boolean. (thanks to Nikodemus Siivola)
3199 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3200 in keyword position to MAKE-PACKAGE was not being reported as
3202 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3203 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3205 * fixed bugs 280 and 312: the checking for multiple definitions in a
3206 file is less likely to become confused by uses of inline
3208 * fixed bug: the #S reader macro performs the keyword coercion
3209 specified for slot names. (reported by Kalle Niemitalo)
3210 * fixed bug: lambda lists may contain symbols whose names start with
3211 & but are not lambda-list-keywords; their occurrence triggers a
3213 * fixed bug 321: define-method-combination argument lambda lists do
3214 not cause invalid code to be generated when &optional or &aux
3215 variables have default values. (reported by Bruno Haible)
3216 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3217 have CLOS classes; this appears also to have fixed reported
3218 instability in stack exhaustion detection.
3219 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3220 MUFFLE-WARNING when no associated restart is present is now
3222 * optimization: rearranged the expansion of various defining macros
3223 so that each expands into only one top-level form in a
3224 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3226 * optimization: used a previously little-used slot in symbols to
3227 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3229 * fixed some bugs revealed by Paul Dietz' test suite:
3230 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3232 ** Fixed an optimization bug related to inheritance of initforms
3233 from local to shared slots.
3234 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3235 ** CAST optimizer forgot to flush argument derived type.
3236 ** print/read consistency on floats is now orders of magnitude
3237 more likely. (thanks also to Bruno Haible for a similar report
3239 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3240 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3241 for objects of type REAL. Make it so.
3242 ** SXHASH is specified (infelicitously) to respect similarity,
3243 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3244 it so. (thanks to Markus Ziegler)
3245 ** on the Alpha, the compiler succeeds in compiling functions
3246 returning a known number of arguments greater than 63.
3247 ** fixed handling of invalid NIL arguments in keyword position
3249 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3251 ** provided a readably-printable representation for RANDOM-STATE
3253 ** ensured that pathnames, where they have a namestring, always
3254 print using #P"..." syntax.
3256 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3257 * Support for the forthcoming 2.0 version of the NetBSD kernel
3258 running on x86 hardware has been added. (thanks to Perry
3259 E. Metzger most immediately, and others for their past work)
3260 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3261 current release version; SBCL's OpenBSD support had been broken
3262 since about the time of OpenBSD's switch to ELF binary format.)
3263 * [placeholder for DX summary]
3264 ** user code with &REST lists declared dynamic-extent, under high
3265 speed or space and low safety and debug optimization policy.
3266 * The manual has been converted to Texinfo format and the debugger
3267 chapter from the cmucl manual has been added.
3268 * A facility has been added to extract documentation strings from
3269 sbcl and store them as Texinfo-formatted snippets for inclusion in
3270 the manual (via Texinfo's @include directive)
3271 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3272 the test case to Dave Roberts)
3273 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3274 pointers. (reported by Sean Ross)
3275 * bug fix: PROFILE output is printed nicely even for large numerical
3276 values. (thanks to Zach Beane)
3277 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3278 greater than 32 handle EOF correctly.
3279 * bug fix: on X86 an immediate argument of the IMUL instruction is
3280 correctly printed in disassembly. (thanks to Lutz Euler)
3281 * bug fix: class slots in redefined classes preserve their old
3282 values. (thanks to Bruno Haible and Nikodemus Siivola)
3283 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3284 succeeds. (reported by Marco Baringer)
3285 * fixed some bugs revealed by Paul Dietz' test suite:
3286 ** READ-SEQUENCE now works on ECHO-STREAMs.
3287 ** RATIONALIZE works more according to its specification. (thanks
3290 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3291 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3292 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3293 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3294 should matter to you only if you rebind the printer control
3295 variables and then find you want different bindings in the
3296 debugger than in the ordinary execution of your program.)
3297 * The runtime build system has been tweaked to support building
3298 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3299 assembler and linker. (thanks to Nikodemus Siivola)
3300 * Unbound, undefined, undeclared variables now trigger full
3301 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3302 more often programmer error than deliberate exploitation of undefined
3304 * optimization: the hash algorithm for strings has changed to one
3305 that is less vulnerable to spurious collisions. (thanks to Juho
3307 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3308 needless bounds checking. (thanks to Juho Snellman)
3309 * optimization: implemented multiplication as a modular
3310 (UNSIGNED-BYTE 32) operation on the PPC backend.
3311 * fixed some bugs revealed by Paul Dietz' test suite:
3312 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3314 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3315 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3316 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3318 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3320 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3322 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3323 their output stream on EOF from read.
3324 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3325 have been read to end-of-file.
3326 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3328 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3329 description of determination of which consecutive characters
3331 ** Printing the "Space" character with escaping on now yields "#\\ ",
3332 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3333 ** Reading floating-point numbers with *READ-BASE* set to a number
3334 less than 10 works correctly.
3335 ** Reading floating-point numbers with *READ-BASE* set to a number
3336 more than 10 works correctly.
3337 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3338 the readtable currently in effect.
3340 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3341 * minor incompatible change: parsing of namestrings on a physical
3342 (Unix) host has changed; numbers after the final #\. in a
3343 namestring are no longer interpreted as a version field. This is
3344 intented to be largely invisible to the user, except that the
3345 meaning of the namestring "*.*.*" has changed: it now refers to a
3346 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3347 should usually be replaced by
3348 (make-pathname :name :wild :type :wild :version :wild)
3349 with the added benefit that this is more likely to be portable.
3350 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3351 option to OPEN now signals an error if the file being opened
3352 exists; this may have an impact on existing code.
3353 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3354 signals received, on the PowerPC platforms (both Linux and
3355 Darwin). (thanks to Pierre Mai for pointing out the location of
3357 * several fixes on OS X: The system now builds and runs cleanly on
3358 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3359 (thanks to Brian Mastenbrook)
3360 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3361 second-resolution: integer multiples of 1/3600 between -24 and 24.
3362 (thanks to Vincent Arkesteijn)
3363 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3364 type when called with 1 argument; PEEK-CHAR checked type of
3365 PEEK-TYPE only after having read first character from a
3366 stream. (reported by Peter Graves)
3367 * bug fix: the garbage collector now has much better locality
3368 behaviour, and in particular no longer treats all memory as being
3369 exhausted when many small objects point to each other in a deeply
3371 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3372 recognized as being TYPEP their class.
3373 * bug fix: the PUSHNEW documentation string has been corrected.
3374 (thanks to Vincent Arkesteijn)
3375 * bug fix: defaulting of the value for the last of an atypically
3376 large number of multiple values being bound was not being
3377 performed correctly on the Alpha or PPC platforms
3378 * optimization: implemented multiplication as a modular
3379 (UNSIGNED-BYTE 32) operation on the x86 backend.
3380 * optimization: SEARCH on simple-base-strings can now be open-coded.
3381 (see also contrib/compiler-extras.lisp for inspiration for
3382 teaching the compiler about the Boyer-Moore algorithm).
3383 * value, returned by MAX (and MIN) called with several EQUALP, but
3384 not EQL, arguments now does not depend on compiler settings.
3385 * fixed some bugs revealed by Paul Dietz' test suite:
3386 ** in stack analysis liveness information is propagated from
3387 non-local entry points.
3388 ** pathwise CAST removing failed when the CAST node did not start
3390 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3391 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3393 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3394 host is already defined.
3395 ** RENAME-FILE works on streams instead of signalling an internal
3397 ** PEEK-CHAR uses the current readtable when determining whether
3398 or not a character is whitespace.
3399 ** MERGE-PATHNAMES handles the case when the pathname does not
3400 specify a name while the default-pathname specifies a version.
3401 ** Pathnames now stand a better chance of respecting print/read
3403 ** Attempting to use standardized file system operators with a
3404 pathname with invalid :DIRECTORY components signals a
3406 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3408 ** DIRECTORY on logical pathnames is more correct.
3409 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3410 signal a TYPE-ERROR if their argument is not a stream.
3411 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3412 designator argument does not designate a stream.
3413 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3414 examining the synonym.
3415 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3417 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3418 element-type larger than ([UN]SIGNED-BYTE 32).
3420 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3421 * When built with the :SB-FUTEX feature, threaded builds now take
3422 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3423 for faster/more reliable mutex and condition variable support.
3424 * Incompatible change (but one you probably shouldn't have been using
3425 anyway): the interface and code for arbitrating between multiple
3426 threads in the same user session has been redesigned.
3427 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3428 error when called without an explicit environment argument.
3429 (thanks to Nikodemus Siivola)
3430 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3431 confused about their position. (thanks to Adam Warner and Gerd
3433 * bug fix: Pretty printing backquoted forms with unquotations in the
3434 argument list position of various code constructs such as LAMBDA
3435 now works correctly. (reported by Paul Dietz)
3436 * bug fix: Pretty printing unquotations no longer loses all
3437 stream position information.
3438 * optimization: performance of string output streams is now less
3439 poor for multiple small sequence writes.
3440 * optimization: performance of CSUBTYPEP in the presence of complex
3441 expressions involving CONS and NOT many times has been improved.
3442 (reported by Paul Dietz)
3443 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3445 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3446 streams for the REPL, for the debugger, and so on. (thanks to
3448 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3449 * fixed some bugs revealed by Paul Dietz' test suite:
3450 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3451 is ignored if it is too small, rather than propagating through
3452 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3453 ** extremely complex negations of CONS types were not being
3454 sufficiently canonicalized, leading to inconsistencies in
3456 ** VALUES tranformer lost derived type.
3458 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3459 * fixed a bootstrapping bug: the build process no longer assumes
3460 that the various BOOLE-related constants have the same value in
3461 host and target lisps. (noted by Paul Dietz' test suite on an
3462 SBCL binary built from CLISP)
3463 * The system can now be dynamically linked on the MIPS platform,
3464 which enables dynamic loading of foreign code from Lisp. (thanks
3465 to Ralf Baechle for discussions on the MIPS ABI)
3466 * The system now records debugging information for its own source
3467 files in a filesystem-position-independent manner, relative to
3468 the "SYS" logical host.
3469 * fixed a compiler bug: MV-LET convertion did not check references
3470 to the "max args" entry point. (reported by Brian Downing)
3471 * tweaked disassembly notes to be less confident about proclaiming
3472 some instruction as an LRA. (thanks to Brian Downing)
3473 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3474 now each have their own history, command character, and other
3475 characteristics. (thanks to David Lichteblau)
3476 * fixed some bugs revealed by Paul Dietz' test suite:
3477 ** compiler failure in compiling LOGAND expressions including a
3479 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3480 shift greater than 32.
3481 ** FLUSH-DEST did not mark blocks for type check regeneration.
3482 ** HANDLER-CASE failed to accept declarations in handler clauses
3483 in some circumstances.
3485 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3486 * New code in contrib/sb-introspect (still probably not entirely
3487 stable yet) provides some support for smart Lisp development
3488 environments like SLIME.
3489 * The conditions signalled for errors occurring when loading .fasl
3490 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3491 in a way which should help ASDF recover gracefully.
3492 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3493 stuff has been cleaned up. If you code contrib/ stuff, this might
3494 affect you, and you can look at contrib/README, contrib/STANDARDS,
3495 and/or the 0.8.4.27 diff to check.
3496 * In full calls the compiler now does not generate checks for declared
3497 argument types for all arguments.
3498 * various threading fixes
3499 ** and some experimental patches which didn't make it into
3500 the main tree for this release, but which are shipped in
3501 contrib/experimental-thread.patch as a possible fix for some
3502 failures (deadlock, spinning...) in GC-intensive multithreaded
3504 * fixed PPC build problem (source code incompatibility of different
3505 library versions): added offsetof() hackery which attempts to divine
3506 where glibc maintainers put uc_mcontext today
3507 * fixed bug 282: compiler does not trust type assertions while passing
3508 arguments to a full call.
3509 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3510 &OPTIONAL VALUES type parameter.
3511 * fix bug 214: algorithm for noting rejected templates is now more
3512 similar to that of template seletion. (also reported by rydis on
3514 * fixed bug 141b: printing backquoted information readably and prettily
3515 inserts a space where necessary.
3516 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3517 (CHARACTER 10) are now reported as errors, rather than propagated
3518 as unknown types. (reported by piso on #lisp)
3519 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3520 with values NIL and :ERROR. (thanks to Milan Zamazal)
3521 * fixed bug 191c: CLOS now does proper keyword argument checking as
3522 described in CLHS 7.6.5 and 7.6.5.1.
3523 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3524 longer raise an error; further, using a list as a for-as-arithmetic
3525 counter now raises a meaningful error.
3526 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3527 now understood by sequence creation functions such as MAKE-SEQUENCE
3529 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3530 a STRING-INPUT-STREAM.
3531 * compiler enhancement: SIGNUM is now better able to derive the type
3533 * type declarations inside WITH-SLOTS are checked. (reported by
3535 * fixed some bugs revealed by Paul Dietz' test suite:
3536 ** incorrect optimization of TRUNCATE for a positive first
3537 argument and negative second.
3538 ** compiler failure in let-convertion during flushing dead code.
3539 ** compiler failure while deriving type of TRUNCATE on an
3540 interval, containing 0.
3541 ** ASH of a negative bignum by a negative bignum count now returns
3543 ** intersection of CONS types now canonicalizes properly, fixing
3544 inconsistencies in SUBTYPEP.
3546 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3547 * incompatible change: The --disable-debugger command line
3548 option now clobbers the debugger at a more fundamental
3549 level, by redefining #'INVOKE-DEBUGGER instead of by
3550 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3551 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3552 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3553 enter the debugger REPL and then suffer recursive errors
3554 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3555 while under the new system, BREAK in --disable-debugger mode
3556 terminates the system just as an unhandled error would.
3557 * fixed compiler performance when processing loops with a step >1;
3558 * bug fix: DOCUMENTATION now retrieves generic function
3559 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3560 support has been systematized, and now supports the methods
3561 specified by ANSI, along with a default method and a method for
3562 slot documentation. (reported by Nathan Froyd)
3563 * bug fix: effective methods associated with a generic function are
3564 no longer cached over a change of that generic function's method
3565 combination. (reported by Andreas Fuchs)
3566 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3567 names a non-existent directory. (thanks to Andreas Fuchs)
3568 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3569 the PPC platform, lead to stack corruption; this has been fixed.
3570 (reported by Rainer Joswig)
3571 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3572 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3573 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3574 arithmetic in general, is now much more reliable on the PPC
3576 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3577 platform now returns the right answer.
3578 * optimization: restored some effective method precomputation in
3579 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3580 precomputation is now tunable.
3581 * optimization: compiler-internal data structure use has been
3582 reviewed, and changes have been made that should improve the
3583 performance of the compiler by about 20%.
3584 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3585 simple-base-strings and simple-bit-vectors is improved.
3586 * optimization: the optimization of 32-bit logical and arithmetic
3587 functions introduced in version 0.8.3 on the x86 has been
3588 implemented on the mips, ppc and sparc platforms; an
3589 implementation of the same facility, but for 64-bit arithmetic,
3590 has been added for the alpha.
3591 * microoptimization: the compiler is better able to make use of the
3592 x86 LEA instruction for multiplication by constants.
3593 * bug fix: in some situations compiler did not report usage of
3594 generic arithmetic in (SPEED 3) policy.
3595 * bug 145b fix: compiler used wrong type specifier while converting
3596 MEMBER-types to numeric.
3597 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3599 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3600 index argument now works properly on the Alpha platform.
3601 * bug fix: floating point exception treatment on the Alpha platform
3603 * bug fix: FILE-POSITION works much better on string input and
3604 output streams. (thanks to Nikodemus Siivola)
3605 * bug fix: many threading/garbage collection symptoms sorted.
3606 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3607 might be pseudo-atomic.
3608 * internal change: Stopping for GC is now done with signals not
3609 ptrace. GC is now done in whichever thread wanted it, instead of
3611 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3613 * bug fix: result form in DO is not contained in the implicit
3615 * incompatible change: ICR structure is changed; the value part of
3616 CONTINUATION is now called LVAR; corresponding functions are
3617 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3618 * added type deriver for ISQRT (thanks to Robert E. Brown).
3619 * bug fix: better support for loading from the command line when an
3620 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3622 * fixed some bugs revealed by Paul Dietz' test suite:
3623 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3624 ** ROUND and FROUND now give the right answer when given very
3625 small float arguments.
3626 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3628 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3629 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3630 ** LCM should return a non-negative integer.
3631 ** PARSE-INTEGER returned the index of a terminator instead of the
3632 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3633 ** PARSE-INTEGER returned an incorrect index being applied to a
3635 ** LCM with two arguments of 0 returns 0 rather than signalling
3637 ** unsigned addition of a 32-bit constant with the high bit set no
3638 longer causes an internal compiler error on the x86.
3639 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3640 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3641 with negative last argument.
3642 ** byte specifiers with zero size and position no longer cause
3643 an error during type derivation.
3644 ** bignum multiplication on the Alpha platform now returns the
3646 * porting: The system now builds on SuSE AMD64, although it still
3647 generates a 32-bit binary.
3648 * .fasl file incompatibility: The fasl file version number has
3649 been incremented (because of the changes to internal compiler
3650 data structures referred to above).
3652 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3653 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3654 more accurately, on the Darwin kernel running on PowerPC hardware.
3655 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3656 * Compiler code deletion notes now signal a condition of type
3657 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3658 an associated MUFFLE-WARNING restart.
3659 * The compiler now performs limited argument count validation of
3660 constant format strings in FORMAT, and where appropriate in ERROR,
3661 CERROR and WARN. (thanks to Gerd Moellmann)
3662 * New ASDF-INSTALL contrib can be used for automatic download and
3663 installation of third-party Lisp code from CCLAN or other sites
3665 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3666 which forces another thread to execute a function supplied by the
3668 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3669 now accept and act upon their :ELEMENT-TYPE keyword argument.
3670 (reported by Martin Atzmueller, Edi Weitz)
3671 * bug fix: FILE-POSITION now accepts position designators up to
3672 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3673 is the greater. (thanks to Patrik Nordebo)
3674 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3675 Kalle Olavi Niemitalo)
3676 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3677 printable. (reported by Eric Marsden)
3678 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3679 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3680 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3681 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3682 (thanks to Stig Sandoe)
3683 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3684 UNREAD-CHAR now correctly includes the unread character in the
3685 target sequence. (thanks to Gerd Moellmann)
3686 * bug fix in threaded builds: the system can now be suspended and
3687 resumed by shell job control with minimal disruption.
3688 * bug fixes in times and timezones >2038AD
3689 * better handling of "where is GNU make?" problem in build scripts
3690 (thanks to Nikodemus Siivola)
3691 * new optimization: inside a named function any reference to a
3692 function with the same name is considered to be a self-reference;
3693 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3694 optimization quality.
3695 * new optimization on x86: logical functions and + now have
3696 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3697 used when the result is truncated to 32 bits.
3698 * VALUES declaration is partially enabled.
3699 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3700 * fixed some bugs revealed by Paul Dietz' test suite:
3701 ** The system now obeys the constraint imposed by
3702 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3703 types form a lattice under type intersection.
3704 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3705 ** ASSOC now ignores NIL elements in an alist.
3706 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3707 and (1+ MOST-POSITIVE-FIXNUM) answers.
3708 ** The addition of a method with invalid qualifiers to a generic
3709 function does not cause an error to be signalled immediately;
3710 a warning is signalled, and the error is generated only on
3711 calling the generic function.
3712 * changed .fasl file version number, in part to add type codes for
3713 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3714 obscure ANSI requirements
3716 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3717 * fixed bug 148: failure to inline-expand a local function left
3718 garbage, confusing the compiler.
3719 * fixed bugs 3cd: structure slot readers perform type check if the
3720 slot can have an invalid value (i.e. it is either not initialized
3721 or can be written with a less specific slot writer).
3722 * bug fix: the compiler now traps array references to elements off
3723 the end of an array; previously, the bounds checking in some
3724 circumstances could go off-by-one.
3725 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3727 * type declarations for array element types now obey the description
3728 on the CLHS page "Declaration TYPE", as per discussions on
3729 sbcl-help around 2003-05-08. This means that a declaration
3730 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3731 declaration, all references to BAR will be asserted or assumed
3732 (with THE, so dependent on compiler policy) to involve objects of
3733 type FOO. Note that no such declaration is implied in
3734 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3735 * declared types of functions from the "Conditions"
3736 chapter. (reported by Paul Dietz)
3737 * bug fix: CERROR accepts a function as its first argument.
3738 * bug fix: NTH an NTHCDR accept a bignum as index
3739 arguments. (reported by Adam Warner)
3740 * optimization: character compare routines now optimize comparing
3741 against a constant character. (reported by Gilbert Baumann)
3742 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3743 argument now works properly on the MIPS platform.
3744 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3745 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3746 declared to have a functional type, does not cause an error
3748 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3749 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3750 * fixed bug: if last continuation of a deleted block has a
3751 destination, this destination should be deleted too. (reported by
3753 * fixed a bug in the bootstrap process: the host compiler's values
3754 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3755 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3756 test case from Patrik Nordebo)
3757 * improved the ability of the disassembler on the PPC platform to
3758 provide helpful disassembly notes.
3759 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3760 the class in more cases than previously.
3761 * bug fix: FILE-POSITION now understands :START and :END for
3762 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3763 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3764 8) data. (thanks to David Lichteblau)
3765 * bug fix: it is possible to add a method to a generic function
3766 without lambda list.
3767 * bug fix: reader failed to signal END-OF-FILE inside an
3768 object representation. (reported by Nikodemus Siivola)
3769 * fixed some bugs revealed by Paul Dietz' test suite:
3770 ** LAST and [N]BUTLAST should accept a bignum.
3771 ** condition slot accessors are methods.
3772 ** (VECTOR NIL) is a subtype of STRING.
3774 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3775 * minor incompatible change: some nonsensical specialized lambda
3776 lists (used in DEFMETHOD) which were previously ignored now signal
3778 * minor incompatible change: the system is now aware of the types of
3779 variables in the COMMON-LISP package, and will signal errors for
3780 most violations of these type constraints (where previously they
3781 were silently accepted).
3782 * minor incompatible change: COMPILE-FILE now uses the freedom
3783 afforded (ANSI 3.2.2.3) to use derived function types for
3784 functions defined in the same file. This also permits the system
3785 to warn on static type mismatches and function
3786 redefinition. (Currently it does not work with high DEBUG level.)
3787 * minor incompatible change: VALUES declaration is disabled.
3788 * When issuing notes, the compiler now signals a condition of type
3789 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3790 restart for use in user handlers. It is expected that the
3791 COMPILER-NOTE condition will eventually become a condition
3792 supertype to a hierarchy of note types, which will then be
3793 handleable in a similar fashion. However, at the moment, no such
3794 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3795 but it's an implementation detail, not a classification for the
3797 * Changes in type checking closed the following bugs:
3798 ** type checking of unused values (192b, 194d, 203);
3799 ** template selection based on unsafe type assertions (192c, 236);
3800 ** type checking in branches (194bc).
3801 * A short form of VALUES type specifier has ANSI meaning (it has
3802 increased the number of situations when SBCL cannot perform type
3804 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3805 keywords or constants is permissible.
3806 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3807 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3808 classes. (thanks to Antonio Martinez)
3809 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3810 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3811 argument to a pretty-print stream. Instead, it leaves any such
3812 operations to DESCRIBE-OBJECT methods.
3813 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3815 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3816 lambda lists. (thanks to David Lichteblau)
3817 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3818 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3819 (thanks to Gerd Moellmann)
3820 * fixed bug 246: increased compilation speed of long
3821 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3823 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3825 * DEFCONSTANT now throws a condition of type
3826 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3827 constant to a non-EQL value; CONTINUE and ABORT restarts
3828 respectively change and preserve the value.
3829 * fixed bug 63: The code walker, part of the implementation of CLOS,
3830 is now better at handling symbol macros.
3831 * bug fix: There is no longer an internal implementation type named
3832 CL:LENGTH. (reported by Raymond Toy)
3833 * bug fix: In macro-like defining macros/special operators the
3834 implicit block does not enclose the lambda list.
3835 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3836 enclosed in parentheses) are not suitable as type specifiers, and
3837 their use properly signals an error now.
3838 * bug fix: An argument count mismatch for a type specifier in code
3839 being compiled no longer causes an unhandled error at compile
3840 time, but signals a compile-time warning.
3841 * fixed simple vector readable printing
3842 * bug fix: DESCRIBE takes more care over whether the class
3843 precedence list slot of a class is bound before accessing it.
3844 (reported by Markus Krummenacker)
3845 * bug fix: FORMATTER can successfully compile pretty-printer format
3846 strings which use variants of the ~* directive inside.
3847 * bug fix: SEARCH now applies its TEST predicate to the elements of
3848 the arguments in the correct order. (thanks to Wolfhard Buss)
3849 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3850 in type inference. (thanks to Robert E. Brown)
3851 * bug fix: Reading in symbols with an explicit package name of ""
3852 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3853 * fixed some bugs revealed by Paul Dietz' test suite:
3854 ** NIL is now allowed as a structure slot name.
3855 ** Arbitrary numbers, not just REALs, are allowed in certain
3856 circumstances in LOOP for-as-arithmetic clauses.
3857 ** Multiple class redefinitions before slot access no longer
3858 causes a type error.
3859 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3860 association between the name and a class.
3861 ** Generic functions with non-standard method-combination and over
3862 five methods all of which return constants no longer return NIL
3863 after the first few invocations. (thanks to Gerd Moellmann)
3864 ** CALL-NEXT-METHOD with no arguments now passes the original
3865 values of the arguments, even in the presence of assignment.
3866 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3868 ** DISASSEMBLE works with closures and funcallable instances.
3869 ** ADD-METHOD now returns the generic function, not the new method.
3870 ** FIND-METHOD signals an error if the lengths of the specializers
3871 is incompatible with the generic function, even if the ERRORP
3873 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3874 which its argument is a member.
3875 ** DEFCLASS only redefines the class named by its class-name
3876 argument if that name is the proper name of the class;
3877 otherwise, it creates a new class.
3878 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3879 of the UNBOUND-SLOT condition to the name of the slot.
3880 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3881 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3882 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3883 SLOT-MAKUNBOUND in the specified fashion.
3885 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3886 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3887 cross-compilation host. As a consequence, we can now bootstrap our
3888 way up to SBCL starting with a bare gcc toolchain and human-readable
3889 source code (first the source to CLISP, then the source to SBCL).
3890 * A contributed module containing a partial implementation of the
3891 simple-streams interface has been included. (thanks to Rudi
3893 * A contributed module implementing the RFC1321 Message Digest
3894 Algorithm, known as MD5, has been included.
3895 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3896 no longer has any effect, as the code controlled by this feature
3897 has been deleted. (As far as we know, no-one has ever built using
3898 this feature, and its semantics were confused in any case).
3899 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3900 work on conditions (as required by the ANSI specification),
3901 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3902 expected behaviour on conditions. Users should note, however,
3903 that such behaviour is not required by the ANSI specification,
3904 and so use of this behaviour may render their code unportable.
3905 * fixed some bugs revealed by Paul Dietz' test suite:
3906 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3908 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3909 ** SXHASH on condition objects no longer returns NIL.
3910 ** :ALLOCATION :CLASS slots are better treated; their values are
3911 updated on class redefinition, and initforms inherited from
3912 superclasses are applied.
3913 ** REMOVE-METHOD returns its generic function argument even when
3914 no method was removed.
3915 ** SHARED-INITIALIZE now initializes the values of the requested
3916 slots, including those with :ALLOCATION :CLASS.
3917 ** ALLOCATE-INSTANCE now works on structure classes defined via
3918 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3920 ** SLOT-EXISTS-P now works on conditions, as well as structures
3922 ** MAKE-LOAD-FORM now has the required methods on
3923 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3924 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3925 keyword, and now implements the SLOT-NAMES argument.
3926 ** methods with &OPTIONAL arguments no longer allow too many
3927 arguments to be passed in the call without error.
3928 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3929 option is consistent with the required arguments of the generic
3930 function lambda list.
3931 * bug fix: REQUIRE accepts a string designator. (Thanks to
3933 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3934 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3935 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3936 * bug fix: The compiler now checks for duplicated variables in macro
3938 * bug fix: SETQ on globals returns the correct value.
3939 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3940 not a COMPILER-ERROR (followed by some other strange error on
3941 choosing the CONTINUE restart).
3942 * bug fix: make.sh and friends are now more consistent in the way that
3943 they look for GNU "make".
3945 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3946 * experimental native threads support (on x86 Linux >=2.4 only).
3947 This is not compiled in by default: you need to add :SB-THREAD to
3948 the target features. See the "Beyond ANSI" chapter of the manual
3950 * fix for longstanding nonANSIism: The old distinction between
3951 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3952 The return value from CL:FIND-CLASS is now a CLOS class, and
3953 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3954 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3955 * An interface to the MetaObject Protocol, as described in Kiczales,
3956 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3957 MIT Press, 1991, is available from the SB-MOP package.
3958 * incompatible change: the SB-PCL package should now be considered
3959 a private implementation detail, and no longer a semi-private MOP
3961 * minor incompatible change: due to rearrangement for threads, the
3962 control stack and binding stack are now allocated at arbitrary
3963 addresses instead of being hardcoded per-port. Users affected by
3964 this probably have to be doing advanced things with shared
3965 libraries, and will know who they are.
3966 * minor incompatible change: Previously, all --eval forms used were
3967 processed with READ before any of them were processed with EVAL.
3968 Now each --eval form is processed with both READ and EVAL before
3969 the next --eval form is processed. (Thus package operations like
3970 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3971 work as the user might reasonably expect.)
3972 * minor incompatible change: *STANDARD-INPUT* is now only an
3973 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3975 * minor incompatible change: Y-OR-N-P is now character-oriented,
3976 not line oriented. Also, YES-OR-NO-P now works without errors.
3977 (thanks to Antonio Martinez)
3978 * sb-aclrepl module improvements: an integrated inspector, added
3979 repl features, and a bug fix to :trace command.
3980 * Known functions, which cannot be open coded by the backend, are
3981 considered to be able to check types of their arguments. (fixing
3982 a bug report by Nathan J. Froyd)
3983 * fixed a bug in computing method discriminating functions: It is
3984 now possible to define methods specialized on classes which have
3985 forward-referenced superclasses. (thanks to Gerd Moellmann)
3986 * fixed evaluation order in optional entries (reported by Gilbert
3988 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3989 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3990 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3991 required-by-AMOP NAME argument, as well as CLASS and
3992 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3993 * fixed bug 20: DEFMETHOD can define methods using names that are
3994 not the proper names of classes to designate class specializers.
3995 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3996 Unix file descriptors, instead of blowing up. (thanks to Antonio
3998 * Garbage collection refactoring: user-visible change is that a
3999 call to the GC function during WITHOUT-GCING will not do garbage
4000 collection until the end of the WITHOUT-GCING. If you were doing
4001 this you were probably losing anyway.
4002 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4003 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4004 TYPEP the latter but not the former.
4005 * The compiler issues a full WARNING for calls to undefined functions
4006 with names from the CL package.
4007 * MAP-INTO for a vector destination is open coded. (reported by
4008 Brian Downing on c.l.l)
4009 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4010 documentation string.
4011 * fixed some bugs revealed by Paul Dietz' test suite:
4012 ** COPY-ALIST now signals an error if its argument is a dotted
4014 ** Condition slots are now accessed more correctly in the presence
4015 of multiple initargs for a given slot.
4016 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4017 exclude restarts of the same name associated with a different
4019 ** DEFCLASS of forward-referenced classes with another
4020 forward-referenced class in the superclasses list no longer
4022 ** Condition slots are now initialized once each, not multiple
4023 times. (thanks to Gerd Moellmann)
4024 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4026 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4027 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4028 arguments contain duplicated elements.
4029 ** RESTART-CASE understands local macros.
4030 ** RESTART-CASE associates exactly its own restarts with a condition.
4031 ** ENDP in safe mode checks its argument to be of type LIST.
4032 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4033 in question is unbound.
4034 ** Optimized MAKE-INSTANCE functions no longer cause internal
4035 assertion failures in the presence of duplicate initargs.
4036 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4037 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4038 propagated even in the ctor optimized implementation of
4040 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4042 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4043 * a better implementation of SXHASH on (simple) bit vectors,
4044 measured both in execution speed and in distribution of results
4045 over the positive fixnums, has been installed. Likewise, a better
4046 implementation of EQUAL for simple bit vectors is now available.
4047 * fixed CEILING optimization for a divisor of form 2^k.
4048 * fixed bug 240 (emitting extra style warnings "using the lexical
4049 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4050 by Antonio Martinez)
4051 * fixed SXHASH, giving different results for NIL depending on type
4052 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4053 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4054 variable. (found by Rolf Wester)
4055 * SBCL does not ignore type declarations for special
4056 variables. (reported by rif on c.l.l 2003-03-05)
4057 * some bug fixes in contrib/sb-aclrepl/
4058 * fixed some bugs revealed by Paul Dietz' test suite:
4059 ** a bug in the CONS type specifier, whereby the CAR and CDR
4060 types got intertwined, has been fixed;
4061 ** the type system is now able to reason about the interaction
4062 between INTEGER and RATIO types more completely;
4063 ** APPEND, [N]REVERSE and NRECONC check that those their
4064 arguments, which must be proper lists, are really so;
4065 ** An array specialized to be unable to hold elements has been
4066 implemented, as required -- yes, really -- by ANSI;
4067 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4068 on malformed property lists;
4070 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4071 * incompatible packaging change: in line with Unix convention,
4072 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4073 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4074 * REQUIRE and PROVIDE are now optionally capable of doing something
4075 useful. See the documentation string for REQUIRE.
4076 * infrastructure for a managed SBCL contrib system: contributed
4077 modules in this release include:
4078 ** the ASDF system definition facility;
4079 ** an interface to the BSD Sockets API;
4080 ** an ACL-like convenience interface to the repl;
4081 (thanks to Kevin Rosenberg)
4082 ** an implementation of ROTATE-BYTE, with efficient implementation
4084 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4085 gives a closer approximation to the right answer than previously.
4086 (thanks to Raymond Toy)
4087 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4088 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4089 optional environment arguments, as required by ANSI.
4090 * fixed bugs in other functions taking environment objects, allowing
4091 calls with an explicit NIL environment argument to be compiled
4093 * fixed bug 228: primary return values from
4094 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4095 COMPILE or FUNCTION.
4096 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4097 :TYPE will no longer signal errors on innocuous objects.
4098 * fixed bug 231b: SETQ is better at respecting type declarations in
4099 the lexical environment.
4100 * fixed a bug in DEFCLASS: classes named by symbols with no or
4101 unprintable packages can now be defined.
4102 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4103 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4104 * fixed compiler failure related to checking types of functions.
4105 (reported by Robert E. Brown)
4106 * the compiler is now much more consistent in its error-checking
4107 treatment of bounding index arguments to sequence functions: in
4108 (SAFETY 3) code, errors will be signalled in almost all cases if
4109 invalid sequence bounding indices are passed to functions defined
4110 by ANSI to operate on sequences.
4111 * fixed a bug in the build procedure: documentation of SBCL-specific
4112 packages is now preserved and available in the final Lisp image.
4113 * lifted FDEFINITION lookup out of loops in the implementation of
4114 many list operations. (thanks to Robert E. Brown)
4115 * fixed a bug in the reader: the #n# reader macro now works for
4116 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4117 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4118 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4119 E. Brown and Tony Martinez respectively)
4120 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4121 SLOT-BOUNDP: in particular, it is now able to optimize them much
4122 better, and is now not vulnerable to having packages renamed.
4123 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4124 always called when a slot is not present in an instance. (thanks
4126 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4127 longer signal an error on unreading a character following EOF on
4128 the previous constituent stream. (thanks to Tony Martinez)
4129 * fixed some bugs revealed by Paul Dietz' test suite:
4130 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4131 not just nonnegative fixnums;
4132 ** the logical bit-array operators such as BIT-AND now accept an
4133 explicit NIL for their "opt-arg" argument (to indicate a
4134 freshly-consed result bit-array);
4135 ** ELT now signals an error on an invalid sequence index in safe
4137 ** the type system is now cleverer about negations of numeric
4138 types, and consequently understands the BIGNUM and RATIO types
4140 ** the type system is now cleverer about the interaction between
4141 INTEGER and RATIO types: while bugs still remain, many more
4142 cases are accurately computed;
4143 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4144 if it is in the last clause;
4145 ** CONSTANTLY now correctly returns a side-effect-free function in
4147 ** DECLARE is no longer treated as a special-operator; in
4148 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4149 * incremented fasl file version number due to the change in the
4150 DEFSTRUCT-SLOT-DESCRIPTION structure.
4152 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4153 * minor incompatible change: code processed by the "interpreter" or
4154 EVAL now has a compilation optimization policy of (DEBUG 2)
4155 (changed from (DEBUG 1)) to improve debuggability of interactive
4156 development, and to allow the use of the debug RETURN command in
4158 * an experimental implementation of the RETURN command for the
4159 debugger has been included. (thanks to Frederik Kuivinen)
4160 * fixed bug 62: constraints were not propagated into a loop.
4161 * fixed bug in embedded calls of SORT (reported and investigated by
4163 * fixed some bugs revealed by Paul Dietz' test suite:
4164 ** printing and reading of arrays with some dimensions having
4165 length 0 (thanks to Gerd Moellmann);
4166 ** BOA constructor with &AUX argument without a default value does
4167 not cause a type error;
4168 ** CONSTANTP now returns true for all self-evaluating objects.
4170 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4171 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4172 accessors that are related by inheritance, as specified in the
4173 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4174 Valtteri Vuorikoski)
4175 * The compiler is now able to inline functions that were defined in
4176 a complex lexical environment (e.g. inside a MACROLET).
4177 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4179 * Support for the upcoming FreeBSD-5.0 release has been included.
4180 (thanks to Dag-Erling Smorgrav)
4181 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4182 effect when it is not in a toplevel context.
4183 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4184 stand a better chance of being correct. (thanks to Gerd
4186 * fixed bug in COERCE, which now signals an error on coercing a
4187 rational to a bounded real type which excludes the expected
4189 * The compiler is now able to derive types more accurately from the
4190 COERCE and COMPILE functions.
4191 * fixed bug 223: functional binding is considered to be constant
4192 only for symbols in the CL package.
4193 * fixed bug 231: SETQ did not check the type of a variable being set
4194 (reported by Robert E. Brown)
4195 * A new optimization for MAKE-INSTANCE has been included, fixing
4196 various bugs (including relating to :ALLOCATION :CLASS slots and
4197 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4199 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4200 ** As required by ANSI, LOOP now disallows anonymous collection
4201 clauses such as COLLECT I in conjunction with aggregate boolean
4202 clauses such as THEREIS (= I 1);
4203 ** LOOP now signals an error when any variable is reused in the
4204 same loop (including the potentially useful construct analogous
4205 to WITH A = 1 WITH A = (1+ A);
4206 ** IT is only a special loop symbol within the first clause of a
4207 conditional loop clause;
4208 ** LOOP with a typed iteration variable over a hashtable now
4209 signals a type error iff it should.
4210 * fixed some other bugs revealed by Paul Dietz' test suite:
4211 ** FILE-STREAM now names the class previously known as FD-STREAM;
4212 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4213 argument) no longer signals an error;
4214 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4215 of the slot symbol, rather than using the current package
4216 ((:CONC-NAME "") continues to intern the slot's name in the
4218 * incremented fasl file version number, because of the incompatible
4219 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4220 of the new implementation of DEFINE-COMPILER-MACRO.
4222 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4223 * Support for building SBCL for MIPS platforms running in
4224 little-endian mode has now been checked in, and basic
4225 functionality on said platforms verified.
4226 * minor incompatible change: PCL now records the pathname of a file
4227 in which methods and the like are defined, rather than its
4229 * minor incompatible change: TRUENAME now considers the truename of
4230 a file naming a directory to be the pathname with :DIRECTORY
4231 component indicating that directory.
4232 * minor incompatible change: a NAMED clause in the extended form of
4233 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4234 reason for the previous behaviour is unclear.
4235 * more systematization and improvement of CLOS and MOP conformance
4236 in PCL (thanks to Gerd Moellman and Pierre Mai):
4237 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4239 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4240 primary methods with no specializers;
4241 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4243 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4244 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4245 FORWARD-REFERENCED-CLASSes; error reporting on
4246 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4248 ** SXHASH on CLOS instances now uses a slot internal to the
4249 instance to return different numbers on distinct instances,
4250 while preserving the same return value through invocations of
4252 ** DEFMETHOD signals errors when methods with longer incongruent
4253 lambda lists are added to generic functions;
4254 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4255 CLASS, as specified in AMOP;
4256 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4257 on the order returned by the primary method for classes of
4258 class STANDARD-CLASS;
4259 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4260 * fixed some bugs shown by Paul Dietz' test suite:
4261 ** DOLIST puts its body in TAGBODY;
4262 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4264 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4265 value producing form;
4266 ** if more variables are given to PROGV than values, extra
4267 variables are bound and made to have no value;
4268 ** NSUBSTITUTE on list arguments gets the right answer with
4270 ** ELT signals an error of type TYPE-ERROR when the index argument
4271 is not a valid sequence index;
4272 ** LOOP signals (at macroexpansion time) an error of type
4273 PROGRAM-ERROR when duplicate variable names are found;
4274 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4275 ** FUNCALL of special-operators now cause an error of type
4277 ** PSETQ now works as required in the presence of side-effecting
4278 symbol-macro places;
4279 ** NCONC accepts any object as its last argument;
4280 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4282 ** loop-for-as-package does not require a package to be explicitely
4284 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4286 * fixed bug 166: compiler preserves "there is a way to go"
4287 invariant when deleting code.
4288 * fixed bug 172: macro lambda lists with required arguments after
4289 &REST arguments now cause an error to be signalled. (thanks to
4291 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4292 bug. (thanks to Matthew Danish)
4293 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4295 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4296 arguments are lexically rebound. (thanks to Gerd Moellmann and
4298 * fixed bug 194: error messages are now more informative when there
4299 is no primary method applicable in a call to a generic
4300 function. (thanks to Gerd Moellmann)
4301 * fixed bug in command line argument checking (thanks to Julian
4303 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4304 (thanks to Matthew Danish)
4305 * incremented fasl file version number, because of the
4306 SXHASH-related changes in the layout of CLOS data structures
4308 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4309 * minor incompatible change: The runtime (the Unix executable named
4310 "sbcl") is now much pickier about the .core files it will load.
4311 Essentially it now requires .core files to descend from the same
4312 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4313 as the runtime does. (The intent is to prevent the crashes which
4314 can occur, and which can even be reported as mysterious failures,
4315 when people patch the sources or change the build parameters
4316 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4317 sbcl and .core files.)
4318 * fixed bug: VALUES-LIST is no longer optimized away.
4319 * fixed bug 142: The FFI conversion of C string values to Lisp
4320 string values no longer conses excessively. (thanks to Nathan
4321 Froyd porting Raymond Toy's fix to CMU CL)
4322 * began to systematize and improve MOP conformance in PCL (thanks to
4323 Nathan Froyd, Gerd Moellman and Pierre Mai):
4324 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4326 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4327 ** FINALIZE-INHERITANCE is now called on class finalization;
4328 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4329 argument precedence order.
4330 * fixed bug 202: The compiler no longer fails on functions whose
4331 derived types contradict their declared type.
4332 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4333 so it can be non-toplevel.
4334 * The fasl file version number has changed (because of the new
4335 implementation of DEFMACRO).
4336 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4337 safe code, that any length requirement by their type-specifier
4338 argument is valid. The exceptions to this are described in bug
4340 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4341 functions now check the types of their inputs as required by ANSI.
4342 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4343 introduced symbol is DECLAREd to be SPECIAL.
4344 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4345 * fixed bug: :COUNT argument to sequence functions may be negative
4346 * fixed bug: body of DO-SYMBOLS may contain declarations
4347 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4348 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4349 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4350 symbol macro only once
4351 * fixed printing of call frame when argument list is unavailable
4352 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4353 * compiler no longer signals WARNING on unknown keyword
4356 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4357 * A beta-quality port to the mips architecture running Linux,
4358 based on the old CMUCL backend, has been made. It has been tested
4359 on a big-endian kernel, and works sufficiently well to be able to
4360 rebuild itself; it has not been tested in little-endian mode.
4361 * fixed an inconsistency between gencgc.c and purify.c which made
4362 dumping/loading .core files unreliable
4363 * fixed bug 120a: The compiler now deals correctly with IFs where
4364 the consequent is the same as the alternative, instead of
4365 misderiving the return type. (thanks to Alexey Dejneka)
4366 * fixed bug 113: Logical pathnames are now dumpable (the logical
4367 host is resolved at load-time, throwing an error if it is not
4369 * fixed bug 174: FORMAT's error message is slightly clearer when a
4370 non-printing character is used in a format directive.
4371 * fixed several bugs in compiler checking of type declarations, i.e.
4372 violations of the Python "declarations are assertions" principle
4373 (thanks to Alexey Dejneka)
4374 * fixed several bugs in PCL's error checking (thanks to Gerd
4376 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4378 * fixed bug in compilation of functions as first class values
4379 (thanks to Antonio Martinez-Shotton)
4380 * The compiler's handling TYPE-ERRORs which it can prove will
4381 inevitably happen at runtime has been cleaned up and corrected
4382 in several ways. (thanks to Alexey Dejneka)
4383 * improved argument type checking for various basic arithmetic
4384 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4385 lavished on them in the past that they can be compiled in many
4386 ways in different special cases
4387 * fixed bug 181: compiler checks validity of user supplied type
4389 * cleaned up code flushing in optimization: Function calls which
4390 should signal errors for safety purposes (e.g. which ANSI says
4391 should signal errors when their arguments are of incorrect type)
4392 are no longer optimized away.
4393 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4394 * incremented fasl file version number, because changes in the
4395 implementation of sequence functions like COERCE caused
4396 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4397 in old inline expansions) to become undefined. (Actually these
4398 changes were later undone, so we might very well be binary
4399 compatible with 0.7.7 after all, but leaving the version number
4400 incremented seemed like the simplest and most conservative
4403 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4404 * An alpha-quality port to the parisc architecture running Linux,
4405 based on the old CMUCL backend, has been made. This, even more so
4406 than the other backends, should be considered still a work in
4407 progress; known problems include that the Linux kernel in 64-bit
4408 mode does not propagate the correct sigcontext structure to
4409 userspace, and consequently SBCL on a parisc64 kernel will not
4411 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4412 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4413 suppressed.) Also now that the compiler is looking at declarations
4414 in the environment, it checks optimization declarations as well,
4415 and suppresses inlining when (> DEBUG SPEED).
4416 * More fixes have been made to treatment of floating point exception
4417 treatment and other Unix signals. In particular, floating point
4418 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4419 * The detection and handling of control stack exhaustion (infinite
4420 or very deeply nested recursion) has changed. Stack exhaustion
4421 detection is now done by write-protecting pages at the OS level
4422 and applies at all optimization settings; when found, a
4423 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4424 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4425 be caught using IGNORE-ERRORS.
4426 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4427 correctly when transforming recursive LABELS functions to LETs.
4428 (thanks to Alexey Dejneka)
4429 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4430 that are names of constants or global variables.
4431 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4432 alien routines with docstrings.
4433 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4434 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4436 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4437 (thanks to Eric Marsden)
4438 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4439 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4440 * Bug fix: The SPARC backend can now compile functions involving
4441 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4442 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4443 to a functions expecting a PATHNAME-DESIGNATOR.
4444 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4445 lambda lists. (thanks to Alexey Dejneka)
4446 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4447 functions so that EXPORTing the name of the class doesn't cause
4448 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4449 to Antonio Martinez for reporting this)
4450 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4451 constant-folded without failing an assertion. (thanks to Einar
4452 Floystad Dorum for reporting this)
4453 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4454 types are now dealt with more correctly by the compiler.
4455 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4456 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4457 behaviour analogous to RENAME-FILE. This puts its behaviour more
4458 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4460 * The fasl file version number has changed again. (because of the
4461 bug fix involving the names of PCL MAKE-INSTANCE functions)
4463 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4464 * bug fix: Floating point exceptions are treated much more
4465 consistently on the x86/Linux and PPC/Linux platforms.
4466 * Array initialization with :INITIAL-ELEMENT is now much faster for
4467 cases when the compiler cannot open code the array creation, but
4468 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4469 array accesses have also seen a speed increase.
4470 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4471 specified. (This was at the root of some bad interactions between
4472 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4474 * bug fix: Internal error arguments for undefined functions are now
4475 computed correctly on the PPC/Linux platform.
4476 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4477 Raymond Toy's patch for CMU CL)
4478 * Support for the Solaris 9 operating environment has been included
4479 (thanks to Daniel Merritt)
4480 * A very ugly but hopefully complete draft of the missing FFI chapter
4481 of the manual has been created by reformatting the corresponding
4482 CMU CL manual chapter into (currently very ugly and incoherent)
4483 DocBook and bringing it up to date for SBCL behavior. Thus, the
4484 manual is now essentially complete, at least by my extreme
4485 once-and-only-once standards, whereby it's acceptable to refer to
4486 the doc strings of SB-EXT functions as the primary documentation.
4487 * The fasl file version number has changed again, due to cleanup of
4488 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4489 is no longer a static symbol.)
4491 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4492 * SBCL now builds with OpenMCL (version 0.12) as the
4493 cross-compilation host; also, more progress has been made toward
4494 bootstrapping under CLISP.
4495 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4497 * bug 158 fixed: The compiler can now deal with integer loop
4498 increments different from 1; fixing this turned out also to fix
4500 * bug 169 fixed: no more bogus warnings about using lexical bindings
4501 despite the presence of perfectly good SPECIAL declarations (thanks
4502 to David Lichteblau)
4503 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4504 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4505 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4507 * bug 180 fixed: Method combination specifications no longer ignore
4508 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4509 * bug fix: Structure type predicate functions now check their argument
4510 count as they should.
4511 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4512 correctly. (thanks to Pierre Mai)
4513 * minor incompatible change: The --noprogrammer option is deprecated
4514 in favor of the new --disable-debugger option, which is very similar.
4515 (The major difference is that it takes effect at a slightly different
4516 time at startup, causing handling of errors in --sysinit and
4517 --userinit files will be affected differently.) The
4518 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4519 been added to allow this functionality to be controlled from ordinary
4520 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4521 maintainers, who might want to run non-interactive scripts to
4522 build SBCL cores which will later be used interactively.)
4523 * minor incompatible change: The LOAD function no longer, when given
4524 a wild pathname to load, loads all files matching that pathname.
4525 Instead, an error of type FILE-ERROR is signalled.
4527 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4528 * bug 147 fixed: The compiler preserves its block link/count
4529 invariants more correctly now so that it doesn't crash. (thanks
4531 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4533 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4534 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4535 no-value-for-this-character as NIL (as specified by ANSI).
4536 * HOST-NAMESTRING on physical pathnames now returns a string that is
4537 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4538 (thanks to Christophe Rhodes)
4539 * The Alpha port handles icache flushing more correctly. (thanks to
4541 * More progress has been made toward bootstrapping under CLISP. (thanks
4542 to Christophe Rhodes)
4543 * The fasl file format has changed again, because dynamic loading
4544 on OpenBSD (which has non-ELF object files) motivated some cleanups
4545 in the way that foreign symbols are transformed and passed around.
4546 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4547 is no longer treated as whitespace by the reader, but instead as
4548 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4549 |A
\7fB|, instead of A as it used to.
4551 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4552 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4553 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4554 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4555 this as of 0.7.1.45, but was left out of the previous news section
4556 (thanks to Dan Barlow)
4557 * SBCL now runs on the Solaris operating system on SPARC architectures
4558 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4559 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4560 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4561 * SPARC backend cleanups, allowing builds of cores optimized for V8
4562 and V9 SPARCS, and also emission of code targeted to a particular
4563 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4565 * SBCL is closer to bootstrapping under CLISP, thanks to various
4566 fixes by Christophe Rhodes.
4567 * The fasl file format has changed again, to allow the compiler's
4568 INFO database to support symbol macros.
4569 * The user manual (in doc/) is formatted into HTML more nicely.
4570 (thanks to coreythomas)
4571 * The system is smarter about SUBTYPEP relationships, especially
4572 those involving NOT types (including types such as ATOM which are
4573 represented internally using NOT types). Thus SUBTYPEP is less
4574 likely to return (VALUES NIL NIL) in general, and in particular
4575 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4577 * The fasl file format has changed again, because the internal
4578 representation of types now includes a new slot to support the new
4579 SUBTYPEP-of-NOT-types logic.
4580 * (not a change in the main branch of SBCL, but a related prototype
4581 which can hopefully be merged into the main branch of SBCL in the
4582 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4583 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4584 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4585 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4586 dispatch macro character combinations. (thanks to Alexey Dejneka)
4587 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4588 that superficially look like logical namestrings correctly.
4589 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4591 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4592 default supplied-p) for &optional and &key arguments. (thanks to
4595 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4596 * incompatible change: The compiler is now less aggressive about
4597 tail call optimization, doing it only when (> SPACE DEBUG) or
4598 (> SPEED DEBUG). (This is an incompatible change because there are
4599 programs which relied on the old CMU-CL-style behavior to optimize
4600 away their unbounded recursion which will now die of stack overflow.)
4601 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4602 for non-GENCGC systems has been increased to 20M (since that
4603 seems much closer to the likely performance optimum for modern
4604 systems than the old 4M value was)
4605 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4606 and *DEBUG-PRINT-LEVEL*
4607 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4608 of CMU CL's support for SPARC, and various endianness and other
4609 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4610 * new syntactic sugar for the Unix command line: --load foo.bar is now
4611 an alternate notation for --eval '(load "foo.bar")'.
4613 ** The system now detects stack overflow and handles it gracefully,
4614 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4615 optimization settings. (This is a good thing in general, and
4616 its introduction in this version should be particularly timely
4617 for anyone whose code fails because of suppression of tail
4619 ** The system now hunts for the C variable "environ" in a more
4620 devious way, to avoid segfaults when the C library version differs
4621 between compile time and run time. (thanks to Christophe Rhodes)
4622 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4623 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4624 ** The compiler no longer issues bogus style warnings for undefined
4625 classes in the same source file as the DEFCLASSes which defined
4626 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4628 ** fixes in CONDITION class precedence list for undefined function
4629 errors (thanks to Alexei Dejneka)
4630 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4631 correctly. (thanks to Dan Barlow)
4632 ** portability fixes aiming at bootstrapping under CLISP (thanks
4633 to Dave McDonald and Christophe Rhodes)
4634 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4635 ** fixes in type translation and and type inference (thanks to
4637 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4638 ** various fixes in the new ports (thanks to Dan Barlow)
4639 * several changes related to debugging:
4640 ** suppression of tail recursion, as noted above
4641 ** stack overflow detection, as noted above
4642 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4643 is now the default. (For some time encapsulation has been more
4644 reliable than the breakpoint-based :ENCAPSULATE NIL
4645 implementation, at least on X86 systems; and I just noticed that
4646 encapsulation also seems closer to the spirit of the ANSI
4649 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4651 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4652 up properly again. (There was a packaging bug in 0.7.0 which
4653 left their definitions in SB-SYS::LOAD-FOREIGN and
4654 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4655 vital for most things which interface to C-level interfaces,
4656 like extensions working with sockets or databases or
4657 Perl-compatible regexes or whatever, and the need to fix
4658 this bug is the main reason that 0.7.1 was released so
4660 ** DEFGENERIC is now choosier about the methods it redefines, so that
4661 reLOADing a previously-LOADed file containing DEFGENERICs does
4662 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4663 cycle now works as it should. (thanks to Alexey Dejneka)
4664 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4665 fixed by Christophe Rhodes. (He actually submitted this patch
4666 months ago, and I delayed until after 0.7.0.)
4667 ** Bug 111 (internal compiler confusion about runtime checks on
4668 FUNCTION types) was fixed by Alexey Dejneka.
4669 * Some internal cleanups (getting rid of variables which aren't
4670 needed now that the byte interpreter is gone) caused the fasl
4671 file format number to change again.
4673 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4674 * major incompatible change: The default fasl file extension, i.e. the
4675 default extension for files produced by COMPILE-FILE, has changed
4676 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4678 ** There are many changes in the implementation of the compiler.
4679 SBCL is now essentially a compiler-only implementation of ANSI
4680 Common Lisp. EVAL still "interprets" a few special cases, but
4681 almost all the interesting cases are handled by creating
4682 a LAMBDA expression, calling COMPILE on it, then calling
4683 FUNCALL on the result.
4684 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4685 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4686 Since the code is newer, there might still be some new bugs
4687 (though not as many as before Martin Atzmueller's fixes:-). But
4688 the new code is substantially simpler and clearer, and hopefully
4689 any remaining bugs will be simpler, less fundamental, and more
4690 fixable then the bugs in the old code.
4691 ** The revised compiler is still a little unsteady on its feet.
4693 *** The debugging information it produces (particularly the names
4694 of FUNCTION objects) is sometimes much less useful than what
4695 the old compiler produced.
4696 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4697 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4698 within a MACROLET) has been temporarily weakened.
4699 ** There are new compiler optimizations for various functions:
4700 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4701 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4702 *** the math functions TRUNCATE, FLOOR, and CEILING
4703 *** the function-of-all-trades COERCE
4704 Mostly these should be transparent, but there's one
4705 potentially-annoying problem (bug 117): when the compiler
4706 inline-expands a function and does type analysis on the result,
4707 it can create control paths which have type mismatches, and
4708 when it can't prove that those control paths aren't taken,
4709 it will issue WARNINGs about the type mismatches. This is
4710 a particular problem in practice for the new sequence functions.
4711 It's not clear how this should be fixed, and for now, a
4712 workaround is given in the entry for 117 in the BUGS file.
4713 ** (Because of the interaction between the two previous items --
4714 occasional inlining problems and new inline expansions -- some
4715 of the new sequence function optimizations won't really kick in
4716 completely until debugging information, and then inlining, are
4717 straightened out in some future version.)
4718 * minor incompatible changes:
4719 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4720 DIRECTORY no longer implicitly promotes NIL slots of its
4721 pathname argument to :WILD. In particular, when you ask for the
4722 contents of a directory (which you used to be able to do without
4723 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4724 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4725 ** changes in behavior that ANSI explicitly defines to be
4726 implementation dependent:
4727 *** The new compiler-only implementation still conforms with ANSI,
4728 but acts a little different than before. Besides the obvious
4729 changes in performance tradeoffs (that the cost per form passed
4730 to EVAL has gone up, and the cost per form executed by EVAL
4731 has gone down), the behavior of the system changes a little
4732 because there are no longer any interpreted function objects.
4733 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4734 e.g. doing COMPILE on the output of interactive DEFUN is
4736 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4738 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4739 has changed from (:CL) to NIL.
4740 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4741 e.g. #\Newline and #\Tab, don't have names specified in the
4742 ANSI Common Lisp standard, is now based on their ASCII symbolic
4743 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4744 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4745 are no longer used for output.
4746 ** changes in internal implementation constants:
4747 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4748 4 million. (If your application spends a lot of time GCing and
4749 you have a lot of RAM, you might want to experiment with
4750 increasing it even more.)
4751 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4752 However, almost all old code should still continue to work without
4753 immediate update, as SB-C-CALL is now a (deprecated) nickname
4755 ** Old operator names in the style DEF-FOO are now deprecated in
4756 favor of new corresponding names DEFINE-FOO, for consistency with
4757 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4758 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4759 internal symbols, but a few supported extensions like
4760 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4761 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4762 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4763 etc. as you get deeper into recursive calls to the debugger
4764 command loop, instead of the old "5]", "5]]", "5]]]"
4765 sequence. (I was motivated to do this when squabbles between
4766 ILISP and SBCL left me very deeply nested in the debugger. In the
4767 short term, this change will probably provoke more ILISP/SBCL
4768 squabbles, but hopefully it will be an improvement in the long run.)
4769 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4770 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4771 function, since declaiming return types involving aliens is
4772 (1) annoyingly messy to do by hand and (2) vital to efficient
4773 compilation of code which calls such functions.
4774 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4775 longer reexported by the SB-EXT package. They're solely useful
4776 for alien code, so it seems more logical that you should get
4777 them from the SB-ALIEN package, not in SB-EXT.
4778 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4779 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4780 features. Instead, the code that they used to control is always
4781 built into the system.
4782 * many other bug fixes
4783 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4784 advantage of the new EVAL-WHEN stuff and to clean them up in
4785 general, and they are now more ANSI-compliant in a number of
4786 ways. Martin Atzmueller is responsible for a lot of this.
4787 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4789 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4790 *** correct ERROR type for various file operations
4791 *** some fixes for Lisp streams
4792 *** DEFMETHOD syntax checking
4793 *** changing old weird representation of debug information as
4794 strings (which, among their other deficiencies, don't transform
4795 correctly when you rename packages, and don't change their
4796 print representation when you change things like *PACKAGE*
4797 and *PRINT-LENGTH*) to symbols and lists of symbols
4798 He also made several improvements and fixed several bugs in DESCRIBE.
4799 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4801 *** misbehavior of WRITE-STRING/WRITE-LINE
4802 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4803 and several other LOOP problems as well
4804 *** DIRECTORY when similar filenames are present
4805 *** DEFGENERIC with :METHOD options
4806 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4807 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4808 *** argument ordering in FIND with :TEST option
4809 *** mishandled package designator argument in APROPOS-LIST
4810 *** various problems in the backquote readmacro
4811 *** a bug in APROPOS
4812 *** probably some others that I'm not describing very well here,
4813 since the CVS log documents them by reference to sbcl-devel
4814 messages, and the SourceForge archives aren't working well.:-(
4815 ** Dan Barlow improved the Alpha port (and is making progress on the
4816 PPC port, for those of you who think different).
4817 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4818 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4819 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4820 continues to work on the SPARC port (for those of you in a position
4821 to look down upon our little PC-compatible boxes from a great height).
4822 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4823 and uses that copy, rather than the current dynamic value, when
4824 it's trying to decide whether to truncate output. Thus e.g.
4825 (let ((*print-lines* 50))
4826 (pprint-logical-block (stream nil)
4828 (let ((*print-lines* 8))
4829 (print (aref possiblybigthings i) stream)))))
4830 should now truncate the logical block only at 50 lines, instead of
4831 often truncating it at 8 lines, as it did before.
4832 * The doc/cmucl/ directory, containing old CMU CL documentation
4833 from the time of the fork, is no longer part of the base system.
4834 SourceForge has shut down its anonymous FTP service, and with it
4835 my original plan for distributing the old CMU CL documentation
4836 there. For now, if you need these files you can download an old
4837 SBCL source release and extract them from it.
4838 * The fasl file version number changed again, for dozens of reasons,
4839 some of which are apparent above.
4841 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4842 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4843 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4844 patch, so that DISASSEMBLE output is much nicer.
4845 * The code in the SB-PROFILE package now seems reasonably stable.
4846 I still haven't decided what the final interface should look like
4847 (I'd like PROFILE to interact cleanly with TRACE, since both
4848 facilities use function encapsulation) but if you have a need
4849 for profiling now, you can probably use it successfully with
4850 the current CMU-CL-style interface.
4851 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4852 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4853 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4854 link now returns the dangling link itself, and for similar
4855 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4856 link itself. (In these cases the old code signalled an error and
4857 looped endlessly, respectively.) Thus, DIRECTORY now works even
4858 in the presence of dangling and cyclic symbolic links.
4859 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4860 is now a supported extension again, since the consensus on
4861 sbcl-devel was that it can be useful for ordinary development
4862 work, not just for debugging SBCL itself.
4863 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4864 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4865 that currently-defined functions might be redefined later with
4866 different return types.
4867 * Hash tables can be printed readably, as inspired by CMU CL code
4868 of Eric Marsden and SBCL code of Martin Atzmueller.
4869 * better error handling in CLOS method combination, thanks to
4870 Martin Atzmueller porting Pierre Mai's CMU CL patches
4871 * more overflow fixes for >16Mbyte I/O buffers
4872 * A bug in READ has been fixed, so that now a single Ctrl-D
4873 character suffices to cause end-of-file on character streams.
4874 In particular, now you only need one Ctrl-D at the command
4875 line (not two) to exit SBCL.
4876 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4878 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4879 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4880 does the right thing.
4881 * The implementation of some type tests, especially for CONDITION
4882 types, is now tidier and maybe faster, due to CMU CL code
4883 originally by Douglas Crosher, ported by Martin Atzmueller.
4884 * Some math functions have been fixed, and there are new
4885 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4886 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4887 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4888 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4889 likely to be built into sbcl-0.7.0.)
4890 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4891 CL, ported to SBCL by Martin Atzmueller)
4892 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4893 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4894 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4895 * There's a new slam.sh hack to shorten the edit/compile/debug
4896 cycle for low-level changes to SBCL itself, and a new
4897 :SB-AFTER-XC-CORE target feature to control the generation of
4898 the after-xc.core file needed by slam.sh.
4899 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4900 COMPILE-FILE is no longer supported, so that now every function
4901 gets an entry point, so that block compilation looks a little
4902 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4903 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4904 returns the number of bytes consed since the system started,
4905 rather than the number consed since the first time the function
4906 was called. (The new definition parallels ANSI functions like
4907 CL:GET-INTERNAL-RUN-TIME.)
4908 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4909 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4910 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4911 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4912 * Fasl file version numbers are now independent of the target CPU,
4913 since historically most system changes which required version
4914 number changes have affected all CPUs equally. Similarly,
4915 the byte fasl file version is now equal to the ordinary
4918 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4919 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4920 is no longer recognized. I apologize for this, because it was
4921 listed in SB-EXT as a supported extension, but I found that
4922 its existing behavior was poorly specified, as well as incorrectly
4923 specified, and it looked like too much of a mess to straighten it
4924 out. I have enough on my hands trying to get ANSI stuff to work..
4925 * many patches ported from CMU CL by Martin Atzmueller, with
4926 half a dozen bug fixes in pretty-printing and the debugger, and
4927 half a dozen others elsewhere
4928 * fixed bug 13: Floating point infinities are now supported again.
4929 They might still be a little bit flaky, but thanks to bug reports
4930 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4931 as flaky as they were.
4932 * The --noprogrammer command line option is now supported. (Its
4933 behavior is slightly different in detail from what the old man
4934 page claimed it would do, but it's still appropriate under the
4935 same circumstances that the man page talks about.)
4936 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4937 are now supported, and enabled by default. Thus, the compiler can
4938 handle many floating point and complex operations much less
4939 inefficiently. (Thus e.g. you can implement a complex FFT
4941 * The compiler now detects type mismatches between DECLAIM FTYPE
4942 and DEFUN better, and implements CHECK-TYPE more correctly, and
4943 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4944 thanks to patches from Martin Atzmueller.
4945 * various fixes to make the cross-compiler more portable to
4946 ANSI-conforming-but-different cross-compilation hosts (notably
4947 Lispworks for Windows, following bug reports from Arthur Lemmens)
4948 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4949 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4950 fixed thanks to Pierre Mai's CMU CL patches.
4951 * fixes to keep the system from overflowing internal counters when
4952 it tries to use i/o buffers larger than 16M bytes
4953 * fixed bug 45a: Various internal functions required to support
4954 complex special functions have been merged from CMU CL sources.
4955 (When I was first setting up SBCL, I misunderstood a compile-time
4956 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4957 * improved support for type intersection and union, fixing bug 12
4958 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4959 more obscure bugs as well
4960 * some steps toward byte-compiling non-performance-critical
4961 parts of the system, courtesy of patches from Martin Atzmueller
4962 * Christophe Rhodes has made some debian packages of sbcl at
4963 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4964 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4965 stable, but are nonetheless usable. When he's ready, I'd be happy
4966 to add them to the SourceForge "File Releases" section. (And if
4967 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4968 * new fasl file format version number (because of changes in
4969 internal representation of (OR ..) types to accommodate the new
4970 support for (AND ..) types, among other things)
4972 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4973 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4975 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4977 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4978 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4979 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4980 * DESCRIBE now works on structure objects again.
4981 * Most function call argument type mismatches are now handled as
4982 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4983 know whether the function will be redefined before the call is
4984 executed. (The compiler could flag local calls with full WARNINGs,
4985 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4986 it doesn't keep track of enough information to know whether calls
4987 are local in this sense.)
4988 * Compiler output is now more verbose, with messages truncated
4989 later than before. (There should be some supported way for users
4990 to override the default verbosity, but I haven't decided how to
4991 provide it yet, so this behavior is still controlled by the internal
4992 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4993 src/compiler/ir1util.lisp.)
4994 * Fasl file format version numbers have increased again, because
4995 support for the Gray streams extension changes the layout of the
4996 system's STREAM objects.
4997 * The Gray subclassable streams extension now works, thanks to a
4998 patch from Martin Atzmueller.
4999 * The full LOAD-FOREIGN extension (not just the primitive
5000 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5001 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5002 but like most other programs, it defaults to copying the Unix
5003 environment from the original process instead of starting the
5004 new process in an empty environment.
5005 * Extensions which manipulate the Unix environment now support
5006 an :ENVIRONMENT keyword option which doesn't smash case or
5007 do other bad things. The CMU-CL-style :ENV option is retained
5008 for porting convenience.
5009 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5010 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5012 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5014 * A patch from Martin Atzmueller seems to have solved the SIGINT
5015 problem, and as far as we know, signal-handling now works cleanly.
5016 (If you find any new bugs, please report them!)
5017 * The system no longer defaults Lisp source file names to types
5018 ".l", ".cl", or ".lsp", but only to ".lisp".
5019 * The compiler no longer uses special default file extensions for
5020 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5021 seems to expect a single default extension for all compiled code,
5022 and there's no compelling reason to try to stretch the standard
5023 to allow two different extensions.) Instead, byte-compiled files
5024 default to the same extension as native-compiled files.
5025 * Fasl file format version numbers have increased again, because
5026 a rearrangement of internal implementation packages made some
5027 dumped symbols in old fasl files unreadable in new cores.
5028 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5029 many fewer weird special cases.
5030 * Bug #17 (differing COMPILE-FILE behavior between logical and
5031 physical pathnames) has been fixed, and some related misbehavior too,
5032 thanks to a patch from Martin Atzmueller.
5033 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5034 by Tim Moore, ported to SBCL by Martin Atzmueller.
5035 * Martin Atzmueller fixed several filesystem-related problems,
5036 including bug #36, in part by porting CMU CL patches, which were
5037 written in part by Paul Werkowski.
5038 * More compiler warnings in src/runtime/ are gone, thanks to
5039 more patches from Martin Atzmueller.
5040 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5043 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5045 * DESCRIBE now works on CONDITION objects.
5046 * The debugger now handles errors which arise when trying to print
5047 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5049 * The build system now uses an additional file, customize-target-features.lisp,
5050 to allow local modifications to the target *FEATURES* list. (The point of
5051 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5052 debugging features enabled, without having to worry about propagating it
5053 into everyone's system when I do a "cvs update".) When no
5054 customize-target-features.lisp file exists, the target *FEATURES* list
5055 should be constructed the same way as before.
5056 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5057 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5058 warn about behavior which is undefined under the ANSI spec. Note: This
5059 is specified by ANSI, but it's not very popular with programmers.
5060 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5061 macro in the SBCL sources for an example of a workaround which you
5062 might use to make portable ANSI-standard code which does what you want.
5063 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5064 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5065 when it's used as a non-toplevel form. (This is required in order
5066 to implement the DEFCONSTANT-EQX macro.)
5067 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5068 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5069 funny things, due to bugs in the implementation of EVAL-WHEN
5070 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5071 non-toplevel DEFCONSTANTs are uncommon.)
5072 * The core file version number and fasl file version number have been
5073 incremented, because the old noncompliant DEFCONSTANT behavior involved
5074 calling functions which no longer exist, and because I also took the
5075 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5076 * fixed bug 1 (error handling before read-eval-print loop starts), and
5077 redid debugger restarts and related debugger commands somewhat while
5079 ** The QUIT debugger command is gone, since it did something
5080 rather different than the SB-EXT:QUIT command, and since it never
5081 worked properly outside the main toplevel read/eval/print loop.
5082 Invoking the new TOPLEVEL restart provides the same functionality.
5083 ** The GO debugger command is also gone, since you can just invoke
5084 the CONTINUE restart directly instead.
5085 ** The TOP debugger command is also gone, since it's redundant with the
5086 FRAME 0 command, and since it interfered with abbreviations for the
5088 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5090 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5091 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5092 some porting work by Martin Atzmueller)
5093 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5094 with a boatload of patches which he ported to SBCL. Now that those
5096 ** The system tries to make sure that its low-priority messages
5097 are prefixed by semicolons, to help people who like to use
5098 syntax highlighting in their ILISP buffer. (This patch
5099 was originally due to Raymond Toy.)
5100 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5101 patches originally written by Raymond Toy.
5102 ** The compiler understands coercion between single-value and
5103 multiple-VALUES type expressions better, getting rid of some very
5104 weird behavior, thanks to patches originally by Robert MacLachlan
5105 and Douglas Crosher.
5106 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5107 lambda lists, thanks to a patch originally by Pierre Mai.
5108 ** The system no longer bogusly warns about "abbreviated type
5110 ** The compiler gets less confused by inlining and RETURN-FROM,
5111 thanks to some patches originally by Tim Moore.
5112 ** The system no longer hangs when dumping circular lists to fasl
5113 files, thanks to a patch originally from Douglas Crosher.
5114 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5115 undefined function error.
5116 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5117 in structure slot initforms) for now, documented workaround instead:-|
5118 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5119 * fixed bug 5: added stubs for various Gray stream functions called
5120 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5121 installed, at least appropriate type errors are generated
5122 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5123 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5124 consistently in DEFMETHOD forms.
5125 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5126 it doesn't seem to affect SBCL after all
5127 * The C runtime system now builds with better optimization and many
5128 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5130 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5132 * The system is now under CVS at SourceForge (instead of the
5133 CVS repository on my home machine).
5134 * The new signal handling code has been tweaked to treat register
5135 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5136 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5137 downstream, e.g. in debug-int.lisp, has implicit dependencies
5138 on the unsignedness of integer representation of machine words,
5139 and that caused the system to bomb out with infinite regress
5140 when trying to recover from type errors involving signed values,
5141 e.g. (BUTLAST '(1 2 3) -1).)
5142 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5143 (This was one of the bugs Peter Van Eynde reported back in July.)
5144 * The system now uses code inspired by Colin Walters' O(N)
5145 implementation of MAP (from the cmucl-imp@cons.org mailing
5146 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5147 inline the MAP operation, and there is more than one
5148 sequence argument to the MAP call (so that it can't just
5149 do ETYPECASE once and for all based on the type of the
5150 single sequence argument). (The old non-inline implementation
5151 of the general M-argument sequence-of-length-N case required
5152 O(M*N*N) time when any of the sequence arguments were LISTs.)
5153 * The QUIT :UNIX-CODE keyword argument has been renamed to
5154 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5155 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5157 * Raymond Wiker's patches to port dynamic loading from Linux to
5158 FreeBSD have been added.
5159 * The BUGS file is now more nearly up to date, thanks in large part
5160 to Martin Atzmueller's review of it.
5161 * The debugger now flushes standard output streams before it begins
5162 its output ("debugger invoked" and so forth).
5163 * The core version number and fasl file version number have both
5164 been incremented, because of incompatible changes in the layout
5166 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5167 used to not be called for a saved Lisp image.)
5168 * Martin Atzmueller's version of a patch to fix a compiler crash,
5169 as posted on sbcl-devel 13 September 2000, has been installed.
5170 * Instead of installing Martin Atzmueller's patch for the
5171 compiler transform for SUBSEQ, I deleted the compiler transform,
5172 and transforms for some similar consing operations.
5173 * A bug in signal handling which kept TRACE from working on OpenBSD
5175 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5176 away by constant folding
5177 * The system now defines its address space constants in one place
5178 (in the Lisp sources), and propagates them automatically elsewhere
5179 (through GENESIS and the sbcl.h file). Therefore, patching the
5180 address map is less unnecessarily tedious and error-prone. The
5181 Lisp names of address space constants have also been systematized.
5182 * CVS tags like dollar-Header-dollar have been removed from
5183 the sources, because they have never saved me trouble and
5184 they've been source of trouble working with patches and other
5185 diff-related operations.
5186 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5187 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5189 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5191 * The system has been ported to OpenBSD.
5192 * The system now compiles with a simple "sh make.sh" on the systems
5193 that it's supported on. I.e., now you no longer need to tweak
5194 text in the target-features.lisp-expr and symlinks in src/runtime/
5195 by hand, the make.sh takes care of it for you.
5196 * The system is no longer so grossly inefficient when compiling code
5197 involving vectors implemented as general (not simple) vectors (VECTOR T),
5198 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5199 which dares to use the various sequence functions on non-simple
5200 vectors, takes less of a performance hit.
5201 * There is now a primitive type predicate VECTOR-T-P
5202 to test for the (VECTOR T) type, so that e.g.
5203 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5204 can now be compiled with some semblance of efficiency. (The old code
5205 turned the type declaration into a full call to %TYPEP at runtime!)
5206 * AREF on (VECTOR T) is still not fast, since it's still compiled
5207 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5208 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5209 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5210 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5211 without making full calls to SUBTYPEP at runtime.
5212 (Some analogous efficiency issues for non-simple vectors specialized to
5213 element types other than T, or for non-simple multidimensional arrays,
5214 have not been addressed. They could almost certainly be handled the
5215 same way if anyone is motivated to do so.)
5216 * The changes in array handling break binary compatibility, so
5217 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5218 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5219 instead of (VALUES T T).
5220 * By following the instructions that Dan Barlow posted to sbcl-devel
5221 on 2 July 2000, I was able to enable primitive dynamic object
5222 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5223 functionality is not implemented (since it calls ld to resolve
5224 library references automatically, requiring RUN-PROGRAM for its
5225 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5226 try to resolve library references) is now supported.
5227 * The system now flushes the standard output streams when it terminates,
5228 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5229 them at several other probably-convenient times, e.g. in each pass of
5230 the toplevel read-eval-print loop, and after evaluating a form given
5231 as an "--eval" command-line option. (These changes were motivated by a
5232 discussion of stream flushing issues on cmucl-imp in August 2000.)
5233 * The source transform for TYPEP of array types no longer assumes
5234 that an array whose element type is a not-yet-defined type
5235 is implemented as an array of T, but instead punts, so that the
5236 type will be interpreted at runtime.
5237 * There is now some support for cross-compiling in make.sh: each of
5238 the phases of make.sh has its own script. (This should be transparent
5239 to people doing ordinary, non-cross-compile builds.)
5240 * Since my laptop doesn't have hundreds of megabytes of memory like
5241 my desktop machine, I became more motivated to do some items on
5242 my to-do list in order to reduce the size of the system a little:
5243 ** Arrange for various needed-only-at-cold-init things to be
5244 uninterned after cold init. To support this, those things have
5245 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5246 symbols with such names are now uninterned after cold init).
5247 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5248 fasl files for cold load.
5249 ** Remove the old compiler structure pooling code (which used to
5250 be conditional on the target feature :SB-ALLOC) completely.
5251 ** Redo the representation of some data in cold init to be more compact.
5252 (I also looked into supporting byte compiled code at bootstrap time,
5253 which would probably reduce the size of the system a lot, but that
5254 looked too complicated, so I punted for now.)
5255 * The maximum signal nesting depth in the src/runtime/ support code has
5256 been reduced from 4096 to 256. (I don't know any reason for the very
5257 large old value. If the new smaller value turns out to break something,
5258 I'll probably just bump it back up.)
5259 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5261 * Many, many bugs reported by Peter Van Eynde have been added to
5262 the BUGS list; some have even been fixed.
5263 * While enabling dynamic object file loading, I tried to make the
5264 code easier to understand, renaming various functions and variables
5265 with less ambiguous names, and changing some function calling
5266 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5267 * While trying to figure out how to do the OpenBSD port, I tried to
5268 clean up some of the code in src/runtime/. In particular, I dropped
5269 support for non-POSIX signal handling, added various comments,
5270 tweaked the code to reduce the number of compilation warnings, and
5271 renamed some files to increase consistency.
5272 * To support the new automatic configuration functionality in make.sh,
5273 the source file target-features.lisp-expr has been replaced with the
5274 source file base-target-features.lisp-expr and the machine-generated
5275 file local-target-features.lisp-expr.
5276 * fixed a stupid quoting error in make.sh so that using CMU CL
5277 "lisp -batch" as cross-compilation host works again
5279 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5281 * DESCRIBE no longer tries to call itself recursively to describe
5282 bound/fbound values, so that it no longer fails on symbols which are
5283 bound to themselves (like keywords, T, and NIL).
5284 * DESCRIBE now works on generic functions.
5285 * The printer now prints less-screwed-up representations of closures
5286 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5287 * A private symbol is used instead of the :EMPTY keyword previously
5288 used to mark empty slots in hash tables. Thus
5289 (DEFVAR *HT* (MAKE-HASH-TABLE))
5290 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5291 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5292 now does what ANSI says that it should. (You can still get
5293 similar noncompliant behavior if bang on the hash table
5294 implementation with all the symbols you get back from
5295 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5296 This breaks binary compatibility, since tests for equality to
5297 :EMPTY are wired into things like the macroexpansion of
5298 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5300 * There's now a minimal placeholder implementation for CL:STEP,
5301 as required by ANSI.
5302 * An obscure bug in the interaction of the normal compiler, the byte
5303 compiler, inlining, and structure predicates has been patched
5304 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5305 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5307 * Missing ordinary arguments in a macro call are now detected even
5308 when the macro lambda list contains &KEY or &REST.
5309 * The debugger no longer complains about encountering the top of the
5310 stack when you type "FRAME 0" to explicitly instruct it to go to
5311 the top of the stack. And it now prints the frame you request even
5312 if it's the current frame (instead of saying "You are here.").
5313 * As specified by ANSI, the system now always prints keywords
5314 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5316 * The default initial SIZE of HASH-TABLEs is now smaller.
5317 * Type information from CLOS class dispatch is now propagated
5318 into DEFMETHOD bodies, so that e.g.
5319 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5321 is now basically equivalent to
5322 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5323 (DECLARE (TYPE SINGLE-FLOAT X))
5325 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5326 operation, without having to do run-time type dispatch.
5327 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5328 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5329 * Since I don't seem to be making big file reorganizations very often
5330 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5331 is overflowing my ability to conveniently back them up), I've finally
5332 checked the system into CVS. (The CVS repository is on my home system,
5333 not at SourceForge -- putting it on SourceForge might come later.)
5334 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5335 high-level GC-NOTIFY-FOO functions send their output. (There's
5336 still very little control of where low-level verbose GC functions
5337 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5338 less than it used to -- the GC-NOTIFY-FOO functions are now under
5339 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5340 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5341 in only one place in the source code, and propagates it automatically
5342 everywhere that it's needed. Thus e.g. when I bump the version from
5343 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5344 * The C source files now include boilerplate legalese and documentation
5345 at the head of each file (just as the Lisp source files already did).
5346 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5347 to his page will be replaced with a link to his new CLiki service.
5349 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5351 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5352 * The build process now looks for GNU make under the default name "gmake",
5353 instead of "make" as it used to. If GNU make is not available as "gmake"
5354 on your system, you can change this default behavior by setting the
5355 GNUMAKE environment variable.
5356 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5357 can build without error under CMU CL.
5359 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5361 * There is now a partial SBCL user manual (with some new text and some
5362 text cribbed from the CMU CL manual).
5363 * The beginnings of a profiler have been added (starting with the
5364 CMU CL profiler and simplifying and cleaning up). Eventually the
5365 main interface should be through the TRACE macro, but for now,
5366 it's still accessed through vaguely CMU-CL-style functions and macros
5367 exported from the package SB-PROFILE.
5368 * Some problems left over from porting CMU CL to the new
5369 cross-compilation bootstrap process have been cleaned up:
5370 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5371 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5372 part when getting rid of the compiler *BACKEND* stuff.)
5373 ** The value of *NULL-TYPE* was screwed up, because it was
5374 being initialized before the type system knew the final
5375 definition of the 'NULL type. This screwed up several key
5376 optimizations in the compiler, causing inefficiency in all sorts
5377 of places. (I found it because I wanted to understand why
5378 GET-INTERNAL-RUN-TIME was consing.)
5379 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5380 PROCLAIM FTYPE information. Unfortunately this broke binary
5381 compatibility again, since now the forms output by DEFGENERIC
5382 to refer to functions which didn't exist in 0.6.3.
5383 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5384 can use the new (as of 0.6.3) transform for SOME into MAP into
5386 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5387 values to (INTEGER 0 1000000), so that the time code will no longer
5388 occasionally get blown up by Linux returning 1000000 microseconds
5389 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5390 its output conform to the ANSI spec. (Alas, this makes its output
5391 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5392 * A full call to MAP NIL with a single sequence argument no longer conses.
5393 * fixes to problems pointed out by Martin Atzmueller:
5394 * The manual page no longer talks about multiprocessing as though
5395 it were currently supported.
5396 * The ILISP support patches have been removed from the distribution,
5397 because as of version 5.10.1, ILISP now supports SBCL without us
5398 having to maintain patches.
5399 * added a modified version of Raymond Toy's recent CMU CL patch for
5400 EQUALP comparison of HASH-TABLE
5402 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5404 * The system still can't cross-compile itself with
5405 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5406 entails), but at least it can compile more of itself that way
5407 than it used to be able to, and various buglets which were uncovered
5408 by trying to cross-compile itself that way have now been fixed.
5409 * This release breaks binary compatibility again. This time
5410 at least I've incremented the FASL file format version to 2, so that the
5411 problem can be detected reliably instead of just causing weird errors.
5412 * various new style warnings:
5413 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5414 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5415 ** using the lexical binding of a variable named in the *FOO* style
5416 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5417 as specified by ANSI.
5418 * *RANDOM-STATE* is no longer automatically initialized from
5419 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5420 default behavior of the system is to repeat its behavior every time
5421 it's run. If you'd like to change this behavior, you can always
5422 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5423 old convention there was no comparably easy way to get the system to
5424 repeat its behavior every time it was run.
5425 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5426 FTYPE declarations has been removed, in favor of their ANSI
5427 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5428 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5429 the types of their sequence arguments can be determined at compile time.
5430 This is done through a new open code expansion for MAP which eliminates
5431 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5432 argument types can be determined at compile time.
5433 * The optimizer now transforms COERCE into an identity operation when it
5434 can prove that the coerced object is already of the correct type. (This
5435 can be a win for machine generated code, including the output of other
5436 optimization transforms, such as the MAP transform above.)
5437 * Credit information has been moved from source file headers into CREDITS.
5438 * Source file headers have been made more standard.
5439 * The CASE macro now compiles without complaining even when it has
5442 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5444 * (Note that the way that the PCL macroexpansions were rewritten
5445 to accommodate the change in DEFGENERIC below breaks binary
5446 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5447 not run under sbcl-0.6.2. Once we get out of alpha releases,
5448 i.e. hit release 1.0.0, we'll probably try to maintain binary
5449 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5450 and sbcl-1.4.4. Until then, however, it might be fairly common
5451 for maintenance releases to break binary compatibility.)
5452 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5454 * The reporting of unhandled signals has been changed to print some
5455 explanatory text as well as the report form. (Previously only
5456 the report form was printed.)
5457 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5458 it defines, so that the compiler no longer issues undefined function
5459 warnings for compiled-but-not-yet-loaded generic functions.
5460 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5461 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5462 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5463 section of the ANSI spec are supported.
5464 * The "" nickname for the "KEYWORD" package has been removed.
5465 The reader still handles symbol tokens which begin with a package marker
5466 as keywords, but it doesn't expose its mechanism for doing so in the
5467 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5468 * The system now issues STYLE-WARNINGs for contradictory TYPE
5469 proclamations. (Warnings for contradictory FTYPE proclamations would
5470 be nice too, but those can't be done usefully unless the type system
5471 is made smarter about FUNCTION types.)
5472 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5473 systematized, so that "*target-*.lisp is supposed to exist only on the
5474 target and imply that there's a related file which exists on the
5475 host, and *host-*.lisp is supposed to exist only on the host and imply
5476 that there's a related file which exists on the target. This involves a
5477 lot of renaming. Hopefully the acute confusion caused by the renaming
5478 will be justified by the reduction in chronic confusion..
5479 ** runtime-type.lisp -> early-target-type.lisp
5480 ** target-type.lisp -> late-target-type.lisp
5481 ** early-host-format.lisp -> early-format.lisp
5482 ** late-host-format.lisp -> late-format.lisp
5483 ** host-error.lisp -> misc-error.lisp
5484 ** early-error.lisp -> early-target-error.lisp
5485 ** late-error.lisp -> late-target-error.lisp
5486 ** host-defboot.lisp -> early-defboot.lisp
5487 ** code/misc.lisp -> code/target-misc.lisp
5488 ** code/host-misc.lisp -> code/misc.lisp
5489 ** code/numbers.lisp -> code/target-numbers.lisp
5490 ** code/early-numbers.lisp -> numbers.lisp
5491 ** early-host-type.lisp -> early-type.lisp
5492 ** late-host-type.lisp -> late-type.lisp
5493 ** host-typep.lisp -> typep.lisp
5494 ** load.lisp -> target-load.lisp
5495 ** host-load.lisp -> load.lisp
5496 ** host-disassem.lisp -> disassem.lisp
5497 ** host-insts.lisp -> insts.lisp
5498 ** byte-comp.lisp -> target-byte-comp.lisp
5499 ** host-byte-comp.lisp -> byte-comp.lisp
5500 ** host-signal.lisp -> signal.lisp
5501 ** host-defstruct.lisp -> defstruct.lisp
5502 ** late-target-type.lisp -> deftypes-for-target.lisp
5503 Furthermore, several other previously target-only files foo.lisp (e.g.
5504 hash-table.lisp and random.lisp) have been split into a target-and-host
5505 foo.lisp file and a target-only target-foo.lisp file, with their key type
5506 definitions in the target-and-host part, so that the cross-compiler will
5507 know more about target types.
5508 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5509 gone away. In their place are various *BACKEND-FOO* variables
5510 corresponding to the slots of the old structure.
5511 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5512 into the target SBCL has been fixed.
5513 * The chill.lisp system for loading cold code into a running SBCL
5515 * Support for the CMU CL "scavenger hook" extension has been removed.
5516 (It was undocumented and unused in the CMU CL sources that SBCL was
5517 derived from, and stale in sbcl-0.6.1.)
5518 * Various errors in the cross-compiler type system were detected
5519 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5520 (enabling various consistency checks). Many of them were fixed,
5521 but some hard problems remain, so the compiler is back to
5522 running without *TYPE-SYSTEM-INITIALIZED* for now.
5523 * As part of the cross-compiler type system cleanup, I implemented
5524 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5525 * I have started adding UNCROSS calls throughout the type system
5526 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5527 on cross-compiler input files will be able to go away, and various
5529 * CONSTANTP now returns true for quoted forms (as explicitly required
5532 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5534 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5535 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5536 (MAKE-LIST -1). In the longer term, it ought to become true
5537 that declarations are assertions even at SAFETY 1. For now, it's not
5538 quite true even at SAFETY 3, but it's at least more nearly true..
5539 (Note that this change seems to increases the size of the system by
5540 O(5%) and to decrease the speed of the compiler by 20% or more.)
5541 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5542 for the problem of printing dozens of lines of distracting information
5543 about low-level system machinery as part of the top stack frame
5544 on entry to the debugger when an undefined function was called.
5545 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5546 is not reset to COMMON-LISP-USER.
5547 * Compilation of stuff related to dyncount.lisp has been made conditional
5548 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5549 smaller. The various dyncount-related symbols have been moved into
5550 a new "SB-DYNCOUNT" package.
5551 * tty-inspect.lisp has been renamed to inspect.lisp.
5552 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5553 feature has gone away. (When we eventually port to other flavors of
5554 libc and/or Unix, we'll try to make the differences between flavors
5555 invisible at the user level.)
5556 * Various other *FEATURES* tags, and/or their associated conditionals,
5557 have been removed if obsolescent, or given better documentation, or
5558 sometimes given more-mnemonic names.
5560 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5562 * tidied up "make.sh" script
5563 * tidied up system directory structure
5564 * better "clean.sh" behavior
5565 * added doc/FOR-CMUCL-DEVELOPERS
5566 * many many small tweaks to output format, e.g. removing possibly-confusing
5567 trailing #\. character in DESCRIBE-INSTANCE
5568 * (EQUALP #\A 'A) no longer signals an error.
5569 * new hashing code, including EQUALP hashing
5570 * tidied up Lisp initialization and toplevel
5571 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5572 * command line argument processing
5573 * added POSIX-GETENV function to deal with Unix-ish environment variables
5574 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5575 terminating SBCL on EOF
5576 * non-verbose GC by default
5577 * There is no more "sbcl" shell script; the sbcl file is now the C
5578 runtime executable (just like CMU CL).
5579 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5581 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5582 symbol and package information as Lisp native symbol and package objects
5583 instead of strings naming symbols and strings naming packages. This way,
5584 whenever packages are renamed (as in warm init), debug information is
5585 transformed along with everything else.
5586 * tweaked the optimization policy declarations which control the building
5587 of SBCL itself. Now, among other things, the system no longer saves
5588 source location debugging information. (This helps two problems at once
5589 by reducing SBCL size and by keeping SBCL from trying to look for its
5590 sources -- which may not exist -- when reporting errors.)
5591 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5592 debugging and testing purposes
5593 * cleaned up printing, making the printer call PRINT-OBJECT for
5594 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5595 methods, giving nearly-ANSI behavior
5596 * converted almost all special variables to use *FOO* naming convention
5597 * deleted PARSE-TIME functionality, since it can be done portably
5598 * moved some files out of cold init into warm init
5599 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5601 * regularized formatting of source files
5602 * added an install.sh script
5603 * fixed ridiculous memory usage of cross-compiler by making
5604 compiler/alloc.lisp not try to do pooling unless it can hook
5605 itself into the GC of the cross-compilation host. Now the system
5606 builds nicely on my old laptop.
5607 * added :SB-ALLOC in target-features.lisp-expr
5608 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5609 was not implemented)
5610 * re-did condition handling and note reporting in the compiler. Notes
5611 are no longer handled by signalling conditions. Style warnings
5612 and warnings are handled more correctly and reported in such a way
5613 that it's easy to find one or the other in your output (so that you
5614 can e.g. figure out which of many problems caused COMPILE-FILE to
5616 * changed the severity of several compiler warnings from full WARNING
5617 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5618 compiler note reporting so that it doesn't use the condition system
5619 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5620 COMPILE-FILE command)
5621 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5622 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5623 no longer supported, since their implementation was deeply intertwingled
5624 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5625 * removed bogus "support" for compiler macros named (SETF FOO), and
5626 removed the compiler macro for SETF INFO (but only after making a fool
5627 of myself on the cmucl-imp mailing list by posting a bogus patch for
5628 DEFINE-COMPILER-MACRO..)
5629 * Compiled files containing forms which have side effects on the Lisp
5630 reader (such as DEFPACKAGE forms) are now handled more correctly.
5631 (Compiler queuing of top level lambdas has been suppressed by setting
5632 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5633 * deleted various currently-unused source files, e.g. gengc.lisp. They
5634 may be added back at some point e.g. when porting to other architectures,
5635 but until they are it's distracting to distribute them and to try to
5637 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5638 there were so many of them they're just distractions, and UNCROSS is
5639 known to be able to handle the current sources
5640 * moved PROFILE functionality into TRACE, so that it will be clear
5641 how the wrapping and unwrapping of functions when you profile them
5642 interacts with the wrapping and unwrapping of functions when you
5643 trace them. (Actually, the functionality isn't there yet, but at least
5644 the interface specification is there. Hopefully, the functionality will
5645 arrive with some future maintenance release.)
5646 * removed host-oops.lisp
5647 * changed signature of QUIT function to allow UNIX-CODE argument
5648 * fixed READ-SEQUENCE bug
5649 * tweaked verbose GC output so that it looks more like the progress
5650 output that ANSI specifies for functions like LOAD
5651 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5652 * added <http://sbcl.sourceforge.com> to the banner information printed by