1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.36:
3 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
4 stack frame thrown from.
5 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
6 compiler optimization qualities inside dynamic extent of its body.
7 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
8 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
10 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
11 constraint propgation, allowing better compilation eg. when used to
12 access structures with WITH-SLOTS. (lp#520366)
13 * optimization: the compiler is now more aware of the type of the underlying
14 storage vector for multidimensional simple arrays resulting in better code
15 for accessing such arrays.
16 * optimization: passing NIL as the environment argument to TYPEP no longer
17 inhibits optimizing it. (lp#309788)
18 * optimization: more efficient register usage when handling single-float
19 arguments on x86-64. (thanks to Lutz Euler)
20 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
21 pre-allocated temporary vectors. (lp#496249)
22 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
23 in :INITIAL-CONTENTS. (lp#523612)
24 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
25 functions. (lp#524707)
26 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
27 WITH-SLOTS usages during compilation.
28 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
29 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
30 all x86oid platforms with :UD2-BREAKPOINTS target feature.
31 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
32 instruction (tested on x86oid linux with ud2-breakpoints).
33 * bug fix: slam.sh now works on win32.
34 * bug fix: better differences of numeric types. (lp#309124)
35 * bug fix: arrays declared intersection and union types can have their
36 upgraded element type derived. (lp#316078)
37 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
38 threads started during profiling. (lp#472499)
39 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
41 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
42 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
43 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
44 values instead of signaling an error. (lp#309093)
45 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
47 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
48 declarations (lp#497321)
49 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
50 and failed to detect circular lists (lp#452008)
51 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
53 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
54 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
55 due to it, so that handlers can run.
56 * bug fix: reparsing undefined types if they have become defined since
59 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
60 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
61 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
62 but work on type specifiers.
63 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
64 to name a type specifier.
65 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
66 specifier is valid where "valid" basically means "would be accepted as
67 second argument of TYPEP".
68 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
69 returns the function's declared, or derived FTYPE.
70 * new feature: SB-POSIX now supports accessing the d_ino member of
71 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
72 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
73 provide for seeding a RANDOM-STATE object with user-provided data or
74 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
75 attempt to initialize the returned state from the operating system's
76 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
77 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
78 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
79 * bug fix: Fix grammar and style issues for the docstrings of
80 printer-related variables and functions. (Thanks to mon_key; launchpad
82 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
84 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
85 in a row even though a handler defered the deadline long into the
87 * bug fix: A deadline handler was run without interrupts enabled for a
88 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
89 in infinitely spinning, non-killable threads.
90 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
91 before reaching the erring stack frame.
92 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
93 real power. (launchpad bug lp#525949)
94 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
95 GENCGC platforms. (launchpad bug lp#529014)
96 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
97 (launchpad bug lp#525916)
98 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
99 (Thanks to Robert Goldman)
101 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
102 * optimization: ROUND with a single single-float or double-float argument
103 is properly inlined when possible.
104 * optimization: Slightly better code is generated for integer<->float
105 conversions and for single-float<->double-float conversions on x86-64.
106 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
107 code for 32-bit and 64-bit rotations on x86-64.
108 * bug fix: The install script changes the ownership of directories as well
109 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
110 launchpad bug lp#508485)
111 * bug fix: TRUNCATE with a single single-float or double-float argument is
112 properly inlined when possible. (launchpad bug lp#489388)
113 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
114 no longer causes a compiler error on x86 and ppc.
115 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
116 always relative to *READTABLE* rather than the passed argument.
118 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
119 * minor incompatible change: threading support is now enabled by default
121 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
123 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
124 are now caught and reported just like errors during macroexpansion.
125 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
126 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
127 * enhancement: ASDF systems can now depends on SB-QUEUE.
128 * fixes and improvements related to Unicode and external formats:
129 ** bug fix: error handling and restart usage in the ucs-2 external format
131 ** there is now an implementation of the ucs-4 external format.
132 ** the utf-16 and utf-32 external formats are supported.
133 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
134 in the environment. setenv() and unsetenv() are also provided. (reported by
135 Fare Rideau; launchpad bug lp#460455)
136 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
137 loading. This ensures sensible errors for .FASL files from other
138 implementations on case-insensitive filesystems. (reported by Willem
139 Broekema; launchpad bug lp#489417)
140 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
141 Willem Broekema; launchpad bug lp#489698).
142 * bug fix: some minor code rearrangements to reenable warning-free building
143 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
144 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
146 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
149 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
150 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
151 * improvement: support O_LARGEFILE access to files larger than 2GB on
152 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
153 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
154 definitions for methods specializing on the passed class itself.
155 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
156 definitions for methods specializing on the passed class itself, or on
158 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
159 about itself during the build (e.g. for M-? in Slime), if this flag is
160 enabled in customize-target-features.lisp. This will increase the core
161 size by about 5-6mb, though, so it's mostly interesting to SBCL
163 * new feature: various GENCGC tuning parameters have been experimentally
164 documented and exported from SB-EXT. See documentation for details.
165 * fixes and improvements related to Unicode and external formats:
166 ** the Unicode character database has been upgraded to the
167 Unicode 5.2 standard, giving names and properties to a number of new
168 characters, and providing a few extra characters with case
170 ** improvement: restarts for providing replacement input/output on coding
171 errors for fd-stream external formats.
172 ** improvement: where :<encoding> is a keyword corresponding to an
173 external format the system supports, it is now possible to specify
174 (:<encoding> :replacement <character>) as an external format which will
175 automatically substitute <character> on encoding or decoding errors for
176 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
178 ** improvement: the file streams underlying the standard streams (such as
179 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
180 which uses the replacement mechanism to handle encoding errors,
181 preventing various infinite error chains and unrecoverable I/O
183 ** minor incompatible change: the utf-8 external format now correctly
184 refuses to encode Lisp characters in the surrogate range (char-codes
185 between #xd800 and #xdfff).
186 ** fix a typo preventing conversion of strings into octet vectors
187 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
189 ** fix a bug in the octet multibyte handling of decoding errors and the
190 USE-VALUE restart. (launchpad bug lp#314939)
191 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
192 restart on fd-stream decoding errors.
193 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
194 error is near the end of file.
195 ** fix a double-error case in unibyte octet conversions, when the first
196 use of USE-VALUE is ignored.
197 ** fix bugs in handling of undefined code points in unibyte encodings.
198 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
199 streams after an UNREAD-CHAR.
200 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
201 object is allocated in a boxed region of dynamic space.
202 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
203 fork with multiple Lisp threads running is made, instead of going
204 ahead with unpredictable consequences. (reported by Leslie Polzer)
205 * bug fix: uses of slot accessors on specialized method parameters within
206 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
207 error while finalizing the class. This fix may cause classes with slot
208 accessors to be finalized later than previously. (reported by Lars Rune
209 Nøstdal; launchpad bug lp#473699)
210 * bug fix: restore buildability on the MIPS platform. (regression from
211 1.0.30.38, reported by Samium Gromoff)
212 * bug fix: inspecting closures is less likely to fail with a type error.
213 * bug fix: no timer starvation when setting the system clock back.
214 (launchpad bug lp#460283)
215 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
216 standard pprint dispatch table as specified by CLHS.
217 * bug fix: give CLISP a hint about a type declaration to enable it to build
218 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
220 * bug fix: correctly dump literal objects in defaulting forms of arglists.
221 (reported by Attila Lendvai; launchpad bug lp#310132)
222 * bug fix: distinguish in type specifiers between arrays that might be
223 complex and arrays that are definitely complex. (launchpad bug lp#309129)
224 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
225 type. (reported by Levente Mészáros; launchpad bug lp#485972)
226 * bug fix: setting the value of a symbol-macro within a method in the
227 presence of type declarations works properly again. (reported by Iban
228 Hatchondo; launchpad bug lp#485019)
230 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
231 * optimization: faster FIND and POSITION on strings of unknown element type
232 in high SPEED policies. (thanks to Karol Swietlicki)
233 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
235 * improvement: better error signalling for bogus parameter specializer names
236 in DEFMETHOD forms (reported by Pluijzer)
237 * bug fix: DELETE-FILE once again works on logical pathnames (regression
239 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
241 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
242 removes previous default initargs (reported by Lars Rune Nøstdal and
244 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
245 lambda-lists. (reported by Peter Seibel)
246 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
247 correctly when starting from an executable core without saved runtime
248 options (reported by Faré Rideau, thanks to Zach Beane)
249 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
250 an optimization note instead. (reported by Martin Cracauer)
251 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
252 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
253 new process group if it doesn't need to share stdin with the sbcl
254 process. (thanks to Leslie Polzer)
255 * bug fix: SATISFIES could be misoptimized to refer to a local function.
256 (reported by Stanislaw Halik)
258 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
259 * improvement: stack allocation is should now be possible in all nested
260 inlining cases: failure to stack allocate when equivalent code is manually
261 open coded is now considered a bug.
262 * improvements related to Unicode:
263 ** the Unicode character database has been upgraded to the
264 Unicode 5.1 standard, giving names and properties to a number of new
265 characters, and providing a few extra characters with case
267 ** the system now recognizes and produces names for Unicode Hangul
269 ** the EBCDIC-US external-format is now supported for octet operations
270 (as well as for stream operations).
271 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
272 be used to output toplevel compile-time effects into a separate .CFASL
274 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
275 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
277 * optimization: TRUNCATE on known single- and double-floats is upto 25%
279 * optimization: division of floating point numbers by constants uses
280 multiplication by reciprocal when an exact reciprocal exists.
281 * optimization: multiplication of single- and double-floats floats by
282 constant two has been optimized.
283 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
284 sufficient type information is available. (thanks to Leslie Polzer)
285 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
286 known structure objects are as efficient as defstruct generated accessors.
287 * optimization: unused vector creation can now be optimized away.
288 * improvement: ASDF systems can now depends on SB-INTROSPECT.
289 * improvement: a STYLE-WARNING is signalled when a generic function
290 clobbers an earlier FTYPE proclamation.
291 * improvement: the compiler is able to track the effective type of
292 generic function across method addition and removal even in the
293 absence of an explicit DEFGENERIC.
294 * improvement: DESCRIBE now reports on symbols naming undefined
295 but assumed or declared function as well.
296 * improvement: recompilation of systems using SB-GROVEL now works
297 (thanks to Leslie Polzer)
298 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
299 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
301 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
302 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
303 well as user defined declaration names.
304 ** VARIABLE-INFORMATION is now aware of alien variables.
305 * improvement: improved address space layout on OpenBSD (thanks to Josh
307 * improvement: pretty-printing of various Lisp forms has been improved
308 (thanks to Tobias Rittweiler)
309 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
310 unused were deleted in safe code. (reported by John Fremlin)
311 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
313 * bug fix: some out-of-line array predicates were missing (reported by
315 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
317 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
318 (thanks to Larry D'Anna)
319 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
320 as well. (reported by Josh Elsasser)
321 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
322 leading to possible attempts to delete the same file twice. See docstring
323 on DELETE-FILE for details. (reported by John Fremlin)
324 * bug fix: DELETE-FILE once again deletes the file named by the pathname
325 designator argument, rather than its truename. (reported by Luis
327 * bug fix: the low-level debugger had 32-bit assumptions and was missing
328 information about some array types. (thanks to Luis Oliveira)
329 * bug fix: moderately complex combinations of inline expansions could
330 be miscompiled if the result was declared to be dynamic extent.
331 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
332 form (+ <variable> <integer>) were miscompiled under certain
334 * bug fix: in some cases no compiler note about failure to stack allocate
335 was emitted, even if the objects were in fact heap allocated.
336 * bug fix: minor violation of "otherwise inaccessible" rule for stack
337 allocation could cause objects users might reasonably expect to
338 be heap allocated to be stack allocated.
339 * bug fix: DESCRIBE signalled an error for generic functions under
340 certain circumstances. (thanks to Leslie Polzer)
341 * bug fix: Fixed spelling of an error message.
343 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
344 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
345 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
346 of SB-THREAD:THREAD-ERROR-THREAD.
347 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
348 * new feature: docstrings for local and anonymous functions are no longer
349 discarded. (thanks to Leslie Polzer)
350 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
351 values in other threads.
352 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
353 about object allocation.
354 * optimization: division of a real float by a complex float is implemented
355 with a specialised code sequence.
356 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
357 keywords is an order of magnitude faster.
358 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
359 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
360 methods, and similarly for non-standard metaclass classes as long as there
361 are no methods additional on MAKE-INSTANCE.
362 * optimization: more efficient type-checks for FIXNUMs when the value
363 is known to be a signed word on x86 and x86-64.
364 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
365 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
367 * optimization: compiler is smarter about delegating argument type checks to
369 * optimization: several character functions are now compiled somewhat more
370 efficiently. (reported by Lynn Quam)
371 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
372 * improvement: less unsafe constant folding in floating point arithmetic,
373 especially for mixed complex/real -float operations.
374 * optimization: constant double and single floats are stored in native
375 unboxed format on x86[-64].
376 * optimization: smarter code for arithmetic operations with constant floats,
377 complex floats, or integers on x86[-64].
378 * optimization: smarter code for conjugate/multiplication of float complexes
379 and abs/negate of floats on x86-64.
380 * optimization: more efficient complex float and real float operations on
382 * improvement: complex float division is slightly more stable.
383 * improvement: DESCRIBE output has been reworked to be easier to read and
384 contains more pertinent information.
385 * improvement: failure to provide requested stack allocation compiler notes
386 provided in all cases (requested stack allocation not happening without a
387 note being issued is now considered a bug.)
388 * bug fix: SB-POSIX exports the documented types and functions
389 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
390 types. (reported by "abhi")
391 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
392 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
393 (thanks to Paul Khuong)
394 * bug fix: looping around HANDLER-CASE could silently consume stack space
395 on each iteration. (reported by "foobar")
396 * bug fix: better error signalling when calls to functions seeking elements
397 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
398 (reported by Tobias Rittweiler)
399 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
400 directory components now works as it used to. (various prolems reported by
401 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
402 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
403 (reported by Elliot Slaughter, thanks to Stas Boukarev)
404 * bug fix: bogus undefined variable warnings from fopcompiled references to
405 global variables. (thanks to Lars Rune Nøstdal)
406 * bug fix: foreign function names should now appear in backtraces on
407 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
408 * bug fix: SETF compiler macro documentation strings are not discarded
410 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
411 (thanks to Alex Plotnick)
412 * bug fix: SLEEP accepts large integer arguments, truncating them to
413 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
414 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
415 * bug fix: compiler notes for expensive slot type checks could be emitted
416 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
418 changes in sbcl-1.0.29 relative to 1.0.28:
419 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
420 https://bugs.launchpad.net/sbcl
421 Bugs can be reported directly there, or by sending email to
422 sbcl-bugs@lists.sourceforge.net
423 (no subscription required.)
424 * minor incompatible change: under weak type checking policy integer
425 types are weakened less aggressively.
426 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
427 allowed to return, which causes SBCL to quit with exit status 0. Previously
428 if the function returned with a small integer return value, that value
429 was accidentally reused as the exit status.
430 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
431 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
432 :HASH-FUNCTION argument. Refer to user manual for details.
433 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
435 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
436 microseconds since the Unix epoch on all platforms.
437 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
438 allows the compiler to safely elide boundedness checks for special
440 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
441 the symbol, prohibits both lexical and dynamic binding. This is mainly an
442 efficiency measure for threaded platforms, but also valueable in
444 * new feature: UNC pathnames are now understood by the system on Windows.
445 * optimization: the compiler uses a specialized version of FILL when the
446 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
448 * optimization: accesses to potentially non-simple arrays where element type
449 is known are 50% faster.
450 * optimization: compiler now generates faster array typechecking code.
451 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
453 * optimization: multidimensional array accesses in the absence of type
454 information regarding array rank are approximately 10% faster due to
455 open coding of ARRAY-RANK.
456 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
457 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
459 * optimization: result of call to VECTOR can now be stack allocated.
460 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
461 as long as the resulting array is one-dimensional and has a known
462 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
463 length of the list matches the known length of the vector does not
464 allocate the list as an intermediate step. Ditto for VECTOR and simple
466 * optimization: MAKE-ARRAY can now stack allocate in the presence of
467 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
468 known element type, and is known to be simple and one dimensional.
469 * improvement: SBCL now emits a compiler note where stack allocation was
470 requested but could not be provided (not in all cases, unfortunately)
471 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
472 * improvement: pretty-printing loop has been implemented properly. (thanks
473 to Tobias Rittweiler)
474 * documentation: CLOS slot typechecing policy has been documented.
475 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
476 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
477 pointer, leading to memory faults. (thanks to Bart Botta)
478 * bug fix: better floating point exception handling on x86/OpenBSD.
479 (thanks to Josh Elsasser)
480 * bug fix: exit status from QUIT when called under --script was lost
481 (reported by Hubert Kauker)
482 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
483 same implementation of FILL to initialize the array, even if a more
484 efficient one was available (reported by Stas Boukarev, thanks to
486 * bug fix: potential miscompilation of array stack allocation on x86 and
487 x86-64. (reported by Time Tossavainen)
488 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
489 result in their subforms being treated as top level forms. (reported by
491 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
492 than a machine register could leave garbage in the high bits of the
493 result register (bug 316325).
494 * bug fix: disable address space randomization Linux/x86-64 as well,
495 not just x86-64. (reported by Ken Olum)
496 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
497 generate incorrect code.
498 * bug fix: #201; type inference for CONS and ARRAY types could derive
499 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
500 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
501 could not be assigned to or bound with PROGV. (reported by Lorenz
503 * bug fix: the value of CL:- in the inspector was the previous expression
504 evaluated rather than the expression being evaluated.
505 * bug fix: constants can no longer be locally declared special.
506 * bug fix: signals delivered to threads started from foreign land (read:
507 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
508 thread by blocking all signals and resignalling.
509 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
510 from :INITFORM, if any.
512 changes in sbcl-1.0.28 relative to 1.0.27:
513 * a number of bugs in cross-compilation have been fixed, with the ultimate
514 result that building under (at least) clisp should be much more reliable.
515 * minor incompatible changes: echo-streams now propagate unread-char to the
516 underlying input stream, and no longer permit unreading more than one
518 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
519 frames, allowing for instance more reliable backtraces.
520 * improvement: the debugger REPL can now reference lexical variables
521 by name directly for code compiled with (DEBUG 3).
522 * improvement: errors from malformed declarations now have better source
523 paths associated with them. (thanks to Tobias Rittweiler)
524 * optimization: faster local calls on x86/x86-64
525 * bug fix: some error messages for out-of-bound array indexes confused the
526 index and the bound. (thanks to Stas Boukarev)
527 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
529 * bug fix: running regressions tests in shells without OSTYPE set now works.
530 (reported by Harald Hanche-Olsen)
531 * bug fix: more robust static space exhaustion signalling from
532 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
533 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
534 docstring away instead of storing it under names such as (LAMBDA (X)).
535 (reported by Leslie Polzer)
536 * bug fix: timers could go off in the wrong order, be delayed indefinitely
537 (thanks to Ole Arndt for the patch)
538 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
539 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
540 potentially-invalid effective methods in its cache.
541 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
542 instances as well (thanks to Paul Khuong)
543 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
544 SB-POSIX:WAITPID and their C equivalents.
545 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
547 changes in sbcl-1.0.27 relative to 1.0.26:
548 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
549 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
550 * improvement: the system either recovers from stack exhaustion or dies
551 properly as opposed to leaving the user uncertain of whether the handler
552 trampled on some random memory next to the stack or having to rely on
553 --lose-on-corruption (which is still a good idea to use in production
554 because stack exhaustion can happen in signal handlers which will likely
556 * bug fix: fix gc related interrupt handling bug on ppc (regression from
557 1.0.25.37, reported by Harald Hanche-Olsen)
558 * bug fix: work around signal delivery bug in darwin (regression from
559 1.0.25.44, reported by Sidney Markowitz)
560 * bug fix: fix ERROR leaking memory (reported by David Thompson)
562 changes in sbcl-1.0.26 relative to 1.0.25:
563 * incompatible change: an interruption (be it a function passed to
564 INTERRUPT-THREAD or a timer function) runs in an environment where
565 interrupts can be enabled. The interruption can use
566 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
567 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
568 potentially running out of stack. Keep in mind that in the absence
569 of WITHOUT-INTERRUPTS some potentially blocking operation such as
570 acquiring a lock can enable interrupts.
571 * incompatible change: GC-OFF and GC-ON are removed, as they were
572 always unsafe. Use WITHOUT-GCING instead.
573 * new feature: runtime option --disable-ldb
574 * new feature: runtime option --lose-on-corruption to die at the
575 slightest hint of possibly non-recoverable errors: running out of
576 memory, stack, alien stack, binding stack, encountering a memory
577 fault, etc. In the absence of --lose-on-corruption a warning is
579 * enhancement: detect binding stack exhaustion
580 * enhancement: detect alien stack exhaustion on x86/x86-64
581 * improvement: generally more stable and reliable interrupt handling
582 * improvement: there is a per thread interruption queue,
583 interruptions are executed in order of arrival
584 * improvement: a repeating timer reschedules itself when the it has
585 finished, but expiration times are spaced equally. If an
586 expiration time is in the past it will trigger after a short grace
587 period that may give a chance to other things to run.
588 * optimization: slightly faster gc on multithreaded builds
589 * optimization: faster WITHOUT-GCING
590 * bug fix: when JOIN-THREAD signals an error, do it when not holding
591 important locks so that the debugger/handler doesn't produce
592 recursive errors or deadlock.
593 * bug fix: real-time signals are not used anymore, so no more
594 hanging when the system wide real-time signal queue gets full.
595 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
597 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
598 * bug fix: fix random memory faults related to interrupts on alpha
599 * bug fix: fix random memory faults related to interrupts on sparc
600 * bug fix: fix deadlocks related to starting threads
601 * bug fix: fix deadlines on locks on futex platforms
602 * bug fix: restore errno in signal handlers
603 * bug fix: fix deadlocks related to hash tables
604 * bug fix: fix deadlocks in pcl
606 changes in sbcl-1.0.25 relative to 1.0.24:
607 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
608 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
609 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
610 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
611 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
612 better name and does not return values so stale on multiprocessor systems.
613 Also, HOLDING-MUTEX-P was added for about the only sane usage of
615 * improvement: unithread builds keep track of MUTEX-VALUE.
616 * improvement: reading from a TWO-WAY-STREAM does not touch the output
617 stream anymore making it thread safe to have a concurrent reader and
618 a writer, for instance, in a pipe.
619 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
620 arguments, making compiler-macros for SETF-functions able to inspect
621 their constant arguments.
622 * improvement: COMPILE-FILE reports times with millisecond accuracy
623 (thanks to Luis Oliveira)
624 * optimization: CHAR-CODE type derivation has been improved, making
625 TYPEP elimination on subtypes of CHARACTER work better. (reported
626 by Tobias Rittweiler, patch by Paul Khuong)
627 * bug fix: setting alien structure fields of type struct by value now
628 computes the right offset for the memory copy.
629 * bug fix: compilation problem involving inlined calls to aliens with
630 result type VOID. (reported by Ken Olum)
631 * bug fix: #235a; sequential inline expasion in different policies no
632 longer reuses the functional from the previous expansion site.
633 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
634 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
635 * bug fix: named ENUMs in multiply-referenced alien record types no longer
636 cause an implied type redefinition. Regression from 1.0.21.29.
637 * bug fix: sign-extension of small signed return values now works with C
638 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
639 * improvements to the Windows port:
640 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
641 Westfold, thanks to Rudi Schlatte)
643 changes in sbcl-1.0.24 relative to 1.0.23:
644 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
645 vector of a multidimensional SIMPLE-ARRAY.
646 * new feature: the system now signals a continuable error if standard
647 readtable modification is attempted. (thanks to Tobias Rittweiler)
648 * new feature: DIRECTORY has been extended with a non-standard keyword
649 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
650 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
651 has been robustified and documented better. (thanks to Robert Goldman)
652 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
653 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
654 * tradeoff: constant FORMAT control strings are now compiled unless
655 SPACE > SPEED (previously only when SPEED > SPACE.)
656 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
658 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
660 * bug fix: lexical type declarations are now correctly reported by
661 SB-CLTL2. (reported by Larry D'Anna)
662 * bug fix: STRING-TO-OCTETS did not handle :START properly when
663 using UTF-8 as external format. (thanks to Luis Oliveira)
664 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
665 are signalled correctly. (thanks to Stas Boukarev)
666 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
667 designator. (thanks to Tobias Rittweiler)
668 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
669 designator, and returns T instead of the function. (thanks to
671 * bug fix: direct superclasses of STANDARD-CLASS and
672 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
673 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
674 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
675 when no class with the named slot yet exists no longer causes a
676 compile-time style-warning.
677 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
678 in safe code. (reported by Didier Verna)
679 * bug fix: #430; nested structure constructors can stack allocate.
680 * bug fix: on some 64-bit platforms dynamic space size was truncated
681 to #xffff0000 bytes. (reported by Benjamin Lambert)
682 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
683 REPL unusable. (reported by Daniel Herring)
684 * bug fix: return values of READ-SEQUENCE did not take :START into
685 account on file streams, regressions since 1.0.12.22. (reported by
686 Thomas Russ, patch by Paul Khuong)
687 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
688 method specializer used to confuse permuation vector optimization.
689 * bug fix: system inserted bogus implicit type declarations for local
690 special variables in DEFMETHOD bodies.
691 * bug fix: #354; duplicated frames in backtraces due to
692 non-tail-call-optimized XEPs to functions with return type NIL
694 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
695 initializes structure object slots according to DEFSTRUCT initforms,
696 and DEFSTRUCT forms :INCLUDEind structure classes defined using
697 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
698 (reported by Bruno Haible and Stephen Wilson)
699 * bug fix: #395; fill-pointer output streams used now support
700 element-type BASE-CHAR as well.
701 * bug fix: compiler error when attempting to derive return value of
702 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
704 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
706 * bug fix: Mac OS X binaries should now be portable between Leopard
709 changes in sbcl-1.0.23 relative to 1.0.22:
710 * enhancement: when disassembling method functions, disassembly
711 for the associated fast function is also produced.
712 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
714 * optimization: printing with *PRINT-PRETTY* true is now more
715 efficient as long as the object being printed doesn't require
716 special handling by the pretty printer.
717 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
718 now interact correctly with type declarations.
719 * partial bug fix: PCL detects infinite recursion during wrapper
720 validation. (thanks to Attila Lendvai)
721 * bug fix: #426; nested function calls are inlined properly.
722 Previously if FOO was an inline function, in calls of the form
723 (FOO (FOO ...)) the outer call was not inlined.
724 * bug fix: long long arguments passed in registers to alien
725 functions on PowerPC Linux and NetBSD are now handled correctly
726 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
728 changes in sbcl-1.0.22 relative to 1.0.21:
729 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
730 for the shared object in the current directory, but passes the native
731 namestring of the designated pathname to the operation system's shared
732 object loading function as-it.
733 * minor incompatible change: --disable-debugger toplevel option now takes
734 effect before processing of initialization files and --eval or --load
736 * new feature: new commandline argument: --script, which supports
737 shebang lines. See documentation for details. (based on work by
739 * new feature: SAVE-LISP-AND-DIE can save current values of
740 --dynamic-space-size and --control-stack-size in the executable core,
741 causing it to skip normal runtime option processing. See documentation
742 for details. (thanks to Zach Beane)
743 * enhancement: inoccous calls to EVAL or generic functions dispatching
744 on subclasses of eg. STREAM no longer cause compiler notes to appear.
745 * enhancement: the system no longer resignals errors from --load and
746 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
747 associated with the original error to be lost. (thanks to Ariel
749 * enhancement: :DONT-SAVE keyword argument has been added to
750 LOAD-SHARED-OBJECT for controlling interaction with
751 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
752 the effects of an earlier LOAD-SHARED-OBJECT call.
753 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
754 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
755 provided. (reported by Cedric St-Jean)
756 * bug fix: circularity handling in the reader did not treat raw
757 structure slots correctly. (reported by Cedric St-Jean)
758 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
759 file descriptors when there were none.
760 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
761 was broken. (reporteed by Willem Broekema)
762 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
763 pathnames without a directory.
764 * bug fix: COMPILE-FILE did not warn about undefined variable
765 references at toplevel, and LOAD of the resulting fasl did
767 * bug fix: functions with non-required arguments used to end up with
768 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
769 * bug fix: redefining a function with non-required arguments didn't
770 update the system's knowledge about its call signature properly.
771 * bug fix: fixed #431; incompatible alien record type redefinitions
772 are detected and handled. (reported by Neil Haven)
773 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
774 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
776 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
777 after alien stack frames.
778 * bug fix: strings passed to mk{s,d}temp lacked null termination
780 changes in sbcl-1.0.21 relative to 1.0.20:
781 * new feature: the compiler is able to track the effective type of a
782 generic function across method addition and removal.
783 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
784 appropriately typed structure slots without locking.
785 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
786 information like those gathered by TIME using a programming-friendly
788 * new feature: TIME reports time taken even if the form performs a
789 non-local transfer of control.
790 * enhancement: reduced conservativism on GENCGC platforms: on
791 average 45% less pages pinned (measured from SBCL self build).
792 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
793 mutate constant symbols or violate declaimed type of the symbol.
794 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
795 sleeping on the semaphore in heavily contested semaphores.
796 * bug fix: semaphores and condition variables were not interrupt
798 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
799 owned by other threads anymore.
800 * bug fix: FIND on lists called KEY outside the specified
801 subsequence. (reported by budden)
802 * bug fix: LOG doesn't use single-float intermediate results when
803 given mixed integer and double-float arguments, leading to better
804 precision. (reported by Bob Felts)
805 * bug fix: LOG with base zero returned values of inconsistent type.
807 changes in sbcl-1.0.20 relative to 1.0.19:
808 * minor incompatible change: OPTIMIZE qualities
809 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
810 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
811 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
812 * documentation: some slot access efficiency guidelines have been
813 added to the user manual.
814 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
815 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
816 as ASSOC and MEMEBER.
817 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
818 to more efficient EQ-comparison versions more often.
819 * optimization: enhanced derivation of DOLIST iteration variable type
821 * optimization: constant folding of simple (LIST ...) forms as DOLIST
823 * optimization: runtime lookup of function definitions can be
824 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
825 * optimization: compiler is able to derive the return type of
826 (AREF (THE STRING X) Y) as being CHARACTER.
827 * optimization: CLRHASH on empty hash-tables no longer does pointless
828 work. (thanks to Alec Berryman)
829 * optimization: REPLACE deftransforms don't punt when :START1 or
831 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
832 no longer emits a code deletion note. (reported by Andrew
834 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
835 functions with an odd number of &OPTIONAL arguments, a &REST
836 argument, and one or more &KEY arguments at the call site.
837 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
838 arguments appeared at call sites as well.
839 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
840 READ-LINE &co can no longer read from them afterwards. (reported
842 * bug fix: fixed #427: unused local aliens no longer cause compiler
843 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
845 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
846 alien-stack leakage. (reported by Andy Hefner)
847 * bug fix: PROGV signals an error when an attempt to violate declared
848 type of a variable or bind a constant is made.
849 * bug fix: SET signals an error when an attempt to violate declared
850 type of a variable is made.
851 * bug fix: restart computation during the execution of a restart
852 test function no longer causes infinite recursion. (reported by
854 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
855 signals an error. (thanks to Pierre Mai)
856 * bug fix: EXPORT left symbol unexported in conflict situations.
857 (thanks to Michael Weber)
858 * bug fix: correctly handle name conflicts involving CL:NIL.
859 (thanks to Michael Weber)
860 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
861 conflicts arising from USEing package with conflicting symbols
862 correctly. (thanks to Michael Weber)
864 changes in sbcl-1.0.19 relative to 1.0.18:
865 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
866 warnings that go otherwise unhandled will be muffled if they are
867 of the type that's the value of this variable.
868 * optimization: stack allocation is slightly more efficient on x86
870 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
871 where a raw slot always is initialized using the initform whose
872 type is not know sufficiently well a compile-time are now compiled
873 correctly. (reported by John Morrison)
874 * bug fix: compiler no longer makes erronous assumptions in the
875 presence of non-foldable SATISFIES types.
876 * bug fix: stack analysis missed cleanups of dynamic-extent
877 arguments in non-let-converted calls to local functions.
878 * improvements to the Windows port:
879 ** adjusted address spaces for building on both Win32 and
880 Win64. (thanks for John Connors)
881 * fixed some bugs revealed by Paul Dietz' test suite:
882 ** interval arithmetic during type derivation used inexact integer
883 to single-float coercions.
884 ** arithmetic operations involving large integers and single
885 floats give the same results in compiled and interpreted code.
886 ** deriving the result type of COERCE no longer signals an error
887 if the derived type of the second argument is a MEMBER type
888 containing invalid type specifiers.
889 ** ADJOIN with constant NIL as second argument works correctly.
890 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
892 changes in sbcl-1.0.18 relative to 1.0.17:
893 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
894 profiles only the current thread.
895 * minor incompatible change: changes to SYMBOL-VALUE of constants
896 defined with DEFCONSTANT now signal an error.
897 * enhancement: SB-SPROF now has support for wallclock profiling,
898 and is also able to profile specific threads. REPORT output
899 has also additional sorting options.
900 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
902 * optimization: structure allocation has been improved
903 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
904 ** out of line constructors are ~10% faster.
905 ** inline constructors are ~15% faster.
906 ** inline constructors are capable of dynamic extent allocation
907 (generally on x86 and x86-64, in some cases on other platforms
909 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
911 * optimization: file compiler is now able to coalesce non-circular
912 lists, non-base strings, and bit-vectors. Additionally, constants
913 are never referenced through SYMBOL-VALUE at runtime.
914 * optimization: code defining methods on PRINT-OBJECT (and other
915 generic functions in the COMMON-LISP package) now loads faster.
916 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
918 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
919 fasl is now deleted. (reported by Attila Lendvai)
920 * bug fix: READ-LINE always returned NIL for the last line in files.
921 (reported by Yoshinori Tahara)
922 * bug fix: more accurate disassembly annotations of foreign function
923 calls. (thanks to Andy Hefner)
924 * bug fix: trimming non-simple strings and non-string string
925 designators when the there is nothing to trim works properly.
926 (thanks to James Knight)
927 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
928 (thanks to Travis Cross)
929 * fixed some bugs revealed by Paul Dietz' test suite:
930 ** NIL is a valid function name (regression at 1.0.13.38)
931 ** FILL on lists was missing its return value (regression at 1.0.12.27)
932 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
933 fill pointers properly (regression at 1.0.12.23)
934 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
935 displacement indices properly (regression at 1.0.12.23)
937 changes in sbcl-1.0.17 relative to 1.0.16:
938 * temporary regression: user code can no longer allocate closure
939 variable storage on stack, due to bug 419 without explicitly
940 requesting it. Please consult sbcl-devel for advice if you need to
941 use this feature in the meanwhile.
942 * new feature: runtime argument --control-stack-size can be used to
943 adjust thread default control stack size.
944 * enhancement: improved TIME output
945 ** all times are reported using the measured accuracy (milliseconds
946 for real and GC times, microseconds for everything else.)
947 ** processor cycle counts on x86 and x86-64.
948 ** interpreted forms are counted for both evaluator modes.
949 ** number of lambdas converted by the compiler is reported.
950 ** CPU percentage report (computed from real and total run time.)
951 ** more comprehensive run time reporting, using a condenced format
952 ** interperted form, lambda, and page fault counts are omitted
954 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
956 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
957 * optimization: two argument forms of LAST are upto ~10% faster
958 in normal SPEED policies.
959 * optimization: NCONC no longer needs to heap cons its &REST list
960 in normal SPEED policies.
961 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
963 * bug fix: UNION and NUNION work with :TEST-NOT once more,
964 regression since 1.0.9.1. (thanks to Eric Marsden)
965 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
966 since 1.0.15.36. (thanks to Paul Khuong)
967 * bug fix: LAST when always returned the whole list when given a bignum
968 as the second argument.
969 * bug fix: dynamic extent allocation of nested lists and vectors
970 could leak to otherwise accessible parts.
971 * bug fix: invalid optimization of heap-allocated alien variable
973 * bug fix: fasl header checking is less vulnerable to different
974 platform word lengths.
975 * bug fix: more correct assembler syntax for GNU binutils
976 2.18.50.0.4 support. (thanks to Marijn Schouten)
977 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
979 * bug fix: the fopcompiler can handle LOCALLY forms (with no
980 declarations) successfully. (reported by Attila Lendvai)
982 changes in sbcl-1.0.16 relative to 1.0.15:
983 * minor incompatible change: revert the changes to sb-posix's error
984 signaling added in 1.0.14.
985 * minor incompatible change: change PROBE-FILE back to returning
986 NIL whenever we can't get a truename, as was the case before 1.0.14.
987 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
988 inherits from ERROR instead of just CONDITION.
989 * new feature: SB-INTROSPECT can provide source locations for instances
990 as well. (thanks to Tobias Rittweiler)
991 * optimization: binding special variables now generates smaller code
992 on threaded platforms.
993 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
994 and cases where no :TEST is given but the compiler can infer that
995 the element to search is of type (OR FIXNUM (NOT NUMBER)).
996 * optimization: better LOGNOT on fixnums.
997 * optimization: modular arithmetic for a particular requested width
998 is implemented using a tagged representation unless a better
999 representation is available.
1000 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1001 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1002 for wellformedness and returns a specialized vector. (reported by
1003 Francois-Rene Rideau)
1004 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1005 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1006 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1007 unscheduling timer at the same time as another timer fires.
1008 * bug fix: don't reschedule timers for dead threads.
1009 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1010 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1011 bogus errors if select() was interrupted.
1012 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1014 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1015 * enhancement: cleaner backtraces for interactive interrupts, as
1016 well as other cases where the interesting frames used to be
1017 obscured by interrupt handling frames.
1018 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1019 now supported, and tracing a whole package using (TRACE "FOO") now
1020 traces SETF-functions as well.
1021 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1022 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1023 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1024 * unreadably printed representation of hash-tables now includes
1026 * bug fix: partially fixed #188: type propagation from assignments
1027 is now more efficient.
1028 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1029 'DOUBLE-FLOAT) are not flushable.
1030 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1031 full address of the object, and none of the tag bits.
1032 * bug fix: readably printing hash-tables now respects other printer
1033 control variables. (reported by Cedric St-Jean)
1034 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1035 keyword with MAKE-HASH-TABLE.
1036 * bug fix: export SB-POSIX:MKSTEMP.
1037 * bug fix: SORT was not interrupt safe.
1038 * bug fix: XREF accounts for the last node of each basic-block as
1040 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1041 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1042 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1043 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1044 create obsolete instances in the case of redefinition or
1045 obsoletion of a superclass. (thanks to Andy Hefner)
1046 * bug fix: Support for the Alpha architecture has been revived; it had
1047 suffered somewhat from lack of maintenance since sbcl-1.0.
1048 * improvements to the Windows port:
1049 ** The system detects the codepage to use at startup, instead of
1050 using the value from the saved core. (thanks to Kei Suzuki)
1052 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1053 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1054 (see documentation for details.)
1055 * revived support for OpenBSD (contributed by Josh Elsasser)
1056 * partially fixed bug #108: ROOM no longer suffers from occasional
1057 (AVER (SAP= CURRENT END)) failures.
1058 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1059 bodies no longer cause a WARNING to be signalled. (reported by
1061 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1062 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1063 the bug in TRUNCATE.) (reported by Michael Weber)
1064 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1065 no samples. (reported by Andy Hefner)
1066 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1067 no longer appear as (NIL ...) frames in backtraces.
1068 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1069 is now actually exported from SB-EXT as documented. (reported by
1071 * bug fix: sb-aclrepl now correctly understands how to inspect
1072 single-floats on 64-bit platforms where single-floats are not boxed.
1073 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1074 yet been finalized. (reported by Levente Meszaros)
1075 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1076 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1077 SBCL-specific optimize qualities.
1079 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1080 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1081 an executable in the search path, and does so in the child
1082 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1083 been removed; it can be found in the CVS history, for somebody who
1084 needs that search behavior (see the manual).
1085 * minor incompatible change: compiler policy re. weakening type
1086 checks has changed: now type checks are weakened only if SAFETY < 2
1088 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1089 unparsing of directory pathnames as files. Analogously,
1090 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1091 filename to parse into a directory pathname.
1092 * enhancement: implicit generic function creation now signals a
1093 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1094 users can bind handlers for and muffle around calls to LOAD.
1095 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1096 to be used (using the default stream external format), and allows
1097 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1098 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1099 strings and vectors whose element-type or simplicity is not fully
1100 known at compile-time.
1101 * optimization: STRING-TRIM and related functions no longer allocate
1102 a new string when no trimming needs to be performed. These functions
1103 are also faster than before when the input string has been declared
1105 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1106 * optimization: READ-LINE is significantly faster for files containing
1108 * optimization: non-open coded uses of character comparison operators
1109 (e.g. char=) no longer cons when called with more than one parameter
1110 on platforms supporting dynamic-extent allocation.
1111 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1112 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1113 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1115 * bug fix: some sequence functions elided bounds checking when
1117 * bug fix: too liberal weakening of union-type checks when SPEED >
1119 * bug fix: more bogus fixnum declarations in ROOM implementation
1122 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1123 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1124 :SYNCHRONIZED argument, which makes the hash-table safe for
1125 concurrent accesses (but not iteration.) See also:
1126 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1127 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1128 * optimization: CONCATENATE on strings is an order of magnitude faster
1129 in code compiled with (> SPEED SPACE).
1130 * optimization: SUBSEQ is ~50% faster on lists.
1131 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1132 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1133 END is smaller then START.
1134 * bug fix: SB-PROFILE will no longer report extra consing for nested
1135 calls to profiled functions.
1136 * bug fix: ROOM implementation had bogus fixnum declarations which
1137 could cause type-errors when calling ROOM on large images.
1138 * bug fix: if file compilation is aborted, the partial fasl is now
1139 deleted, and COMPILE-FILE returns NIL as the primary value.
1140 * bug fix: number of thread safety issues relating to SBCL's internal
1141 hash-table usage have been fixed.
1142 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1143 be returned from its body when the values were being returned
1144 using unknown-values return convection and the W-P-O was wrapped
1145 inside an UNWIND-PROTECT.
1146 * bug fix: sb-posix should now compile again under Windows, enabling
1147 slime to work again.
1149 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1150 * incompatible change: hash-table accessor functions are no longer
1151 automatically protected by locks. Concurrent accesses on the same hash-table
1152 from multiple threads can give inconsistent results or even corrupt the
1153 hash-table completely. Multi-threaded applications should do their own
1154 locking at the correct granularity. In the current implementation it is
1155 still safe to have multiple readers access the same table, but it's not
1156 guaranteed that this property will be maintained in future releases.
1157 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1158 and will signal an error at runtime.
1159 * enhancement: SB-THREAD package now exports a semaphore interface.
1160 * enhancement: CONS can now stack-allocate on x86 and
1161 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1163 * enhancement: nested lists can now be stack allocated on
1164 platforms providing stack allocation support.
1165 * enhancement: dynamic-extent support has been extended to support
1166 cases where there are multiple possible sources for the stack
1168 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1169 if the mutex is uncontested on Linux.
1170 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1171 as specified by the CLHS. (thanks to Tobias Rittweiler)
1172 * bug fix: NaN comparison now works on x86-64.
1173 * bug fix: CLOSE :ABORT T on a stream with pending output now
1175 * bug fix: instances of non-standard metaclasses using standard
1176 instance structure protocol sometimes missed the slot type checks
1178 * bug fix: known functions can be inlined in high-debug code.
1180 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1181 * minor incompatible change: the MSI installer on Windows no longer
1182 associates .lisp and .fasl files with the installed SBCL.
1183 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1184 on Windows. (thanks to Luis Oliviera)
1185 * new feature: SB-CLTL2 contrib module now implements
1186 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1187 * optimization: scavenging weak pointers is now more efficient,
1188 requiring O(1) instead of O(N) per weak pointer to identify
1189 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1190 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1191 method bodies using constant slot-names when the first argument is
1192 a specializer parameter for the method.
1193 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1194 names, when the class of the instance is a direct instance
1195 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1196 as slow as the constant slot-name case.)
1197 * optimization: member type construction is now O(N) instead
1199 * optimization: UNION and NUNION are now O(N+M) for large
1200 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1202 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1203 now more readable in environments like Slime which display it.
1204 (thanks to Tobias C. Rittweiler)
1205 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1206 was able to infer the correct argument type for the object on which
1207 the CAS operation was being performed.
1208 * bug fix: copy propagation interfered with parallel assignment
1209 semantics in local calls. (reported by Paul Khuong)
1210 * bug fix: the signed modular fixnum shift compiled to wrong code on
1211 x86 and x86-64. (spotted by a slight modification to some of
1214 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1215 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1216 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1217 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1219 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1220 and generic function now print the object identity for anonymous
1221 instances. (thanks to Attila Lendvai)
1222 * enhancement: as an extension to MOP, SBCL now supports SETF of
1223 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1224 (thanks to Attila Lendvai)
1225 * enhancement: sb-cover has an alternate annotation mode which puts
1226 the form annotations at the car of the form, instead of annotating
1227 it completely. The benefit of this mode is that it shows better
1228 which forms were instrumented by the compiler.
1229 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1230 by printer control variables. (reported by Dan Corkill)
1231 * bug fix: system leaked memory when delayed output was performed by
1232 the OS in smaller chunks then expected. (thanks to David Smith)
1233 * bug fix: system leaked memory when file streams were not closed
1235 * bug fix: large objects written to slow streams that were modified
1236 after the write could end up with the modified state written to
1237 the underlying file descriptor.
1238 * bug fix: multiple threads operating in parallel on the same stream
1239 could cause buffer-overflows.
1240 * bug fix: source location information is stored correctly
1241 (broken since 1.0.6). This bug would generally show up as the
1242 Slime debugger highlighting the wrong form when the sldb-show-source
1244 * bug fix: Branch forms are again annotated as branches in the sb-cover
1246 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1247 on x86-64. (reported by Gregory Vanuxem)
1248 * bug fix: EQUALP could return wrong results for structures with raw
1249 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1250 word). (reported by Vjacheslav Fyodorov)
1251 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1254 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1255 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1256 atomic compare-and-swap operations on threaded platforms.
1257 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1258 allows assigning a global minimum value to optimization qualities
1259 (overriding proclamations and declarations).
1260 * enhancement: closed over variables can be stack-allocated on x86
1262 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1264 * optimization: slot definition lookup is now O(1). This speeds up
1265 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1266 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1267 * optimization: ASSOC and MEMBER can now be open-coded for all
1268 combinations of keyword arguments when second argument is constant
1269 and SPEED >= SPACE. In other cases a specialized version is
1271 * bug fix: using obsoleted structure instances with TYPEP and
1272 generic functions now signals a sensible error.
1273 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1274 (reported by Kristoffer Kvello)
1275 * bug fix: backtrace construction is now more careful when making
1276 lisp-objects from pointers on the stack, to avoid creating bogus
1277 objects that can be seen by the GC.
1278 * bug fix: defaulting of values in contexts expecting more than 7
1279 variables now works on x86-64. (reported by Christopher Laux)
1280 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1282 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1283 as the property-list of a symbol.
1284 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1285 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1286 situations requested, are once again file-compileable. (reported
1289 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1290 * MOP improvement: support for user-defined subclasses of
1291 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1292 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1293 the expansion of DEFMETHOD, is responsible for generating a form
1294 which creates a list of specializers when evaluated. Additional
1295 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1296 debugging and introspective support.
1297 * minor incompatible change: the (unsupported) spinlock interface
1298 has changed: free spinlock now has the value NIL, and a held spinlock
1299 has the owning thread as its value.
1300 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1301 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1303 * enhancement: name of a socket-stream is now "a socket" instead of
1304 "a constant string".
1305 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1306 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1307 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1308 for generic functions. (Thanks to Tobias C. Rittweiler)
1309 * optimization: bignum printing speed has been improved by 20-40%
1310 (depending on the bignum size.)
1311 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1313 * bug fix: the cache used by the CLOS to store precomputed effective
1314 methods, slot offsets, and constant return values is now thread and
1316 * bug fix: generic function dispatch function updating is now thread
1317 and interrupt safe (in the sense that the known issues have been
1319 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1320 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1321 * bug fix: asdf systems with dependencies to the SB-POSIX or
1322 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1323 * bug fix: interrupt safety of applicable method computation has been
1326 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1327 * new contrib: sb-cover, an experimental code coverage tool, is included
1328 as a contrib module.
1329 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1330 significantly faster.
1331 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1332 produce more efficient code on x86-64 if the compiler can determine
1333 that (+ INDEX <constant>) does not require a bounds check and FOO
1334 has an element type at least 8 bits wide.
1335 * enhancement: a new, experimental synchronous timeout facility is
1336 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1337 * enhancement: when a symbol name conflict error arises, the
1338 conflicting symbols are always printed with a package prefix.
1339 (thanks to Kevin Reid)
1340 * enhancement: stepping is now once again supported on the SPARC and
1341 MIPS platforms. (It is also now more likely to work on CheneyGC
1343 * enhancement: sb-sprof can now also track and report accurate call
1345 * bug fixes: the treatment of non-standard subclasses of
1346 SB-MOP:SPECIALIZER is more correct.
1347 * incompatible change: PURIFY no longer copies the data from the
1348 dynamic space into the static and read-only spaces on platforms
1349 that use the generational garbage collector
1350 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1352 * bug fix: GC race condition occasionally resulting in crashes with
1353 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1355 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1357 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1358 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1359 * bug fix: an asynchronous interrupt could previously leave the
1360 system running with GC inhibited.
1361 * bug fix: a DECLARE form evaluated at top-level now causes an error
1362 rather than silently (or verbosely) returning NIL.
1363 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1364 result in a error being signalled due to source form lookup errors.
1365 (reported by Peter Graves)
1367 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1368 * incompatible change: removed writer methods for host-ent-name,
1369 host-ent-addresses -- changing the values did not update the DNS
1371 * minor incompatible change: changed experimental JOIN-THREAD interface
1372 * documentation: the manual now lists reader and writer methods
1373 in class slot documentation sections. (thanks to Richard M Kreuter)
1374 * documentation: unwinding from asyncronous events has been
1375 documented as unsafe.
1376 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1377 in multithreaded application code.
1378 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1379 platforms. (thanks to James Anderson for the optimization hint)
1380 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1382 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1383 variants no longer cons.
1384 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1385 their NOT- variants no longer cons.
1386 * optimization: EQUAL hash tables no longer use SXHASH for objects
1387 of all data types, but instead use an EQL hash for types for which
1388 EQUAL is the same as EQL.
1389 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1390 are significantly faster.
1391 * optimization: new STRING-OUTPUT-STREAM implementation is much
1392 faster for large outputs and conses 30% less on average.
1393 * enhancement: XREF information is now collected for references made
1394 to global variables using SYMBOL-VALUE and a constant argument.
1395 * enhancement: SIGINT now causes a specific condition
1396 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1397 * bug fix: FILE-POSITION used to signal an error in some cases where
1398 ANSI requires it to return NIL.
1399 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1400 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1401 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1403 * bug fix: bad type declaration in the CLOS implementation has
1404 been fixed. (reported by James Anderson)
1405 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1406 (thanks to Lutz Euler)
1407 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1408 required by the CLHS. (reported by Samium Gromoff)
1409 * bug fix: dead unbound variable references now signal an error.
1410 (reported by Marco Monteiro)
1411 * bug fix: / with an unused value was being deleted in safe code.
1412 (thanks to Marco Monteiro and Kevin Reid)
1413 * bug fix: number of characters that can be written onto a single
1414 line in a file is unlimited.
1415 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1416 been fixed by inhibiting interrupts for when GC is disabled.
1417 * bug fix: some interrupt safety issues with GETHASH, (SETF
1418 GETHASH), CLRHASH and REMHASH have been fixed.
1419 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1420 specifier no longer causes infinite recursion.
1421 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1422 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1423 * bug fix: an &environment argument with the correct variable information
1424 is passed to macros that are expanded during byte compilation.
1425 (reported by Samium Gromoff)
1426 * bug fix: a logic error was causing the hash function for bignums to
1427 have excessive amounts of collisions. (reported by Faré Rideau)
1428 * bug fix: modifying the contents of an array could change the return
1429 value of SXHASH on that array, which is only allowed for strings
1430 and bit vectors. (bug introduced in 0.9.16)
1431 * improvement: the x86-64/darwin port now passes all tests (except
1432 for the debugger tests) but should still be considered
1433 experimental until this is fixed.
1434 * improvement: a style-warning is signaled for CASE (etc) clauses with
1435 duplicate keys. (thanks to Kevin Reid)
1436 * improvement: macos/x86 and macos/x86-64 now use mach exception
1437 handlers for dealing with illegal instructions (for trapping and
1438 error handling) and memory protection violations (for GC).
1440 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1441 * new platform: experimental support for x86-64/darwin (MacOS).
1442 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1443 and getnameinfo sockets functions are used instead of gethostbyaddr
1444 and gethostbyname, on platforms where the newer functions are available.
1445 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1447 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1448 don't print the startup banner, but behave as if --noinform was passed
1449 as a command line argument. (thanks to Kevin Reid)
1450 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1451 * optimization: code using alien values with undeclared types is much faster.
1452 * optimization: the compiler is now able to open code SEARCH in more cases.
1453 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1454 * bug fix: using standardized COMMON-LISP special variables as loop
1455 variables no longer signals bogus package lock violations. (reported
1457 * bug fix: declaring local loop variables to be of a range-limited type
1458 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1459 (reported by Andras Simon)
1460 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1461 bugs remain on x86-64.)
1462 * bug fix: the #= and ## reader macros now interact reasonably with
1463 funcallable instances.
1464 * bug fix: type-checks for function arguments were compiled using the
1465 compiler policy settings of the wrong lexical environment (in 1.0.2
1467 * bug fix: SHADOW accepts characters as string designators, as required
1468 by the spec (thanks to Eric Marsden)
1469 * bug fix: fixed GC safety issues when foreign functions are called with
1470 non-base strings as arguments
1471 * bug fix: more consistent error output for fatal-compiler-warnings, like
1473 * bug fix: functions with proper names were showing up as NIL in
1474 backtraces (reported by Edi Weitz, regression in 1.0.2)
1476 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1477 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1478 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1479 produce more efficient code on the x86 if the compiler can determine
1480 that (+ INDEX <constant>) does not require a bounds check and FOO
1481 has an element type at least 8 bits wide.
1482 * bug fix: references to undefined variables are handled the same way
1483 in toplevel forms as in the normal compiler
1484 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1486 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1487 (thanks to Jon Buller)
1488 * improvement: faster compilation times for complex functions
1489 * improvement: added readlink support to SB-POSIX (thanks to Richard
1492 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1493 * improvement: experimental support for mach exception handling on
1494 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1496 * improvement: support for GBK external format.
1497 (thanks to Chun Tian (binghe))
1498 * improvement: the debugger now displays variables that have been closed
1499 over, in code compiled with (DEBUG 2) or higher
1500 * improvement: support for executable cores on NetBSD (thanks to
1502 * new feature: added a RESTART-FRAME debugger command
1503 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1504 be used to provide an implementation for FILE-POSITION on Gray streams
1505 (thanks to Eric Marsden)
1506 * new feature: add syslog, openlog and closelog support to SB-POSIX
1507 (thanks to Richard Kreuter)
1508 * optimization: the function call overhead in code compiled with
1509 a high DEBUG optimization setting is significantly
1510 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1511 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1512 (thanks to Tony Martinez)
1513 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1514 evaluated once (reported by Kevin Reid)
1515 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1516 works again (thanks to Kilian Sprotte)
1517 * bug fix: an error is signaled for tagbodies with duplicate tags
1518 (thanks to Stephen Wilson)
1519 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1520 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1521 stack frames from alien callbacks.
1522 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1523 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1524 65k pages (thanks to David Woodhouse)
1525 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1527 changes in sbcl-1.0.1 relative to sbcl-1.0:
1528 * new platform: FreeBSD/x86-64, including support for threading.
1529 * new feature: the compiler stores cross-referencing information
1530 about function calls (who-calls), macroexpansion (who-macroexpands)
1531 and special variables (who-binds, who-sets, who-references) for code
1532 compiled with (< SPACE 3). This information is available through the
1533 sb-introspect contrib.
1534 * new feature: users may subclass SEQUENCE, and have instances of
1535 these classes interoperate with standard Common Lisp functions if
1536 a number of methods are defined. (This feature is experimental
1537 and the interface subject to change based on feedback from SBCL
1538 users and the general community)
1539 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1540 x86/x86-64, rather than the previous fixed depth of 8
1541 * improvement: another pthread back-end of mutex "pthread-futex".
1542 * bug fix: non-ascii command-line arguments are processed correctly
1543 (thanks to Yaroslav Kavenchuk)
1544 * bug fix: non-required arguments were not passed correctly when a method
1545 defined using DEFMETHOD was called from a mop-generated method using
1546 CALL-NEXT-METHOD (reported by Pascal Costanza)
1547 * bug fix: recursion is now permitted in accessors through
1548 SLOT-UNBOUND. (reported by Pascal Costanza)
1549 * bug fix: an error was signaled at startup if the HOME environment
1550 variable was defined, but had an empty value (reported by Peter Van Eynde)
1551 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1552 signal a PROGRAM-ERROR, not a BUG.
1553 * bug fix: SB-POSIX:READDIR works when built with large file support.
1554 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1556 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1557 for better automatic indentation support. (thanks to Matt Pillsbury)
1558 * optimization: loading generic functions no longer takes O(n^2) time,
1559 proportional to the amount of methods in the generic function
1560 (reported by Todd Sabin and Jeremy Brown)
1561 * optimization: the FIND and POSITION family of sequence functions
1562 are significantly faster on arrays whose element types have been
1564 * improvements to the Windows port:
1565 ** Intermittent heap corruption problems have been fixed. (thanks
1566 to Alastair Bridgewater)
1567 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1569 ** Lisp is able to unwind foreign exception frames from alien
1570 callbacks. (thanks to Alastair Bridgewater)
1572 changes in sbcl-1.0 relative to sbcl-0.9.18:
1573 * improvement: experimental support for threading on FreeBSD/x86.
1574 (thanks to NIIMI Satoshi)
1575 * improvement: runtime option --dynamic-space-size can be used
1576 to set the size of the dynamic space reserved on startup.
1577 * improvement: floating point modes in effect are now saved in
1578 core, and restored on startup.
1579 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1580 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1581 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1582 threads are not running after *SAVE-HOOKS* have run.
1583 * improvement: writes to CLOS instance slots are type-checked in code
1584 compiled with (SAFETY 3)
1585 * improvement: floating-point exception handling on FreeBSD (thanks to
1587 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1588 (thanks to Zach Beane)
1589 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1591 * improvement: added support for the Shift-JIS external format.
1592 (contributed by NIIMI Satoshi)
1593 * improvement: callbacks are supported on Linux/PPC. (thanks to
1595 * bug fix: compiler bug triggered by a (non-standard) VALUES
1596 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1597 * bug fix: file compiler no longer confuses validated and already
1598 dumped structurres. (reported by Kaersten Poeck)
1599 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1600 fill-pointer signals a type-error as required. (thanks to
1602 * bug fix: disassemly of funcallable instances works.
1603 * bug fix: single stepping on PPC.
1604 * bug fix: fix thread-safety problems in the type system (generally
1605 manifesting as nonsensical errors like "STRING is a bad type specifier
1606 for sequences" or "The value 1 is not of type FIXNUM")
1607 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1608 (reported by Josip Gracin)
1609 * bug fix: an error is signaled for attempts to displace arrays with
1610 incompatible element types (thanks to Mario Mommer)
1611 * bug fix: more correct handling of wide characters in debug info
1612 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1613 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1614 and don't cause extra consing
1615 * optimization: MAP and MAP-INTO are significantly faster on vectors
1616 whose elements types have been declared.
1617 * Improvements to SB-SPROF:
1618 ** Support for allocation profiling
1619 ** Reduced profiling overhead, especially for long profiling runs
1620 * Improvements to the Windows port:
1621 ** floating point exceptions are now reported correctly.
1622 ** stack exhaustion detection works partially.
1623 ** more accurate GET-INTERNAL-REAL-TIME.
1624 ** better RUN-PROGRAM behaviour in case of errors in the child
1626 ** PROBE-FILE now simplifies pathnames correctly.
1627 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1628 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1629 1st 1970 (although time timezone data will be unreliable).
1630 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1632 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1633 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1634 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1636 * bug fix: two potential GC deadlocks affecting threaded builds.
1637 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1638 returns T (reported by Anton Kazennikov)
1639 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1640 with non-variable places
1641 * bug fix: remove a race condition in the setting of
1642 funcallable-instance functions, this should make threaded CLOS
1643 code more stable against memory faults.
1644 * bug fix: corruption of specials when unbinding is interrupted by an
1645 asynchronous unwind (reported by Hannu Koivisto)
1646 * improvement: the debugger will now also display local variables that
1647 are only used once, for code compiled with a DEBUG optimization quality
1650 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1651 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1652 * incompatible change: External-format support for FFI calls. The
1653 SB-ALIEN:C-STRING no longer implies an ASCII
1654 external-format. Instead the string is subject to external-format
1655 conversion. Additionally return values of type SB-ALIEN:C-STRING
1656 are by default of type (SIMPLE-ARRAY CHARACTER), not
1657 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1658 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1659 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1660 * incompatible change: SB-EXT package no longer contains the
1661 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1662 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1664 * incompatible change: the single-stepper is no longer available
1665 on Alpha, Mips and Sparc platforms.
1666 * minor incompatible change: the direct superclasses of
1667 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1668 not (STANDARD-OBJECT FUNCTION). This makes the
1669 class-precedence-lists of GENERIC-FUNCTION and
1670 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1672 * minor incompatible change: the default stream external format on
1673 non-unicode SBCL is no longer detected from the locale, but is always
1675 * new feature: Add a version of evaluator that uses an interpreter instead
1676 of the compiler. EVAL still uses the compiler by default, to switch it
1677 to use the interpreter, set the value of the variable
1678 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1679 * minor incompatible change: the single-stepper REPL has been merged
1680 with the normal debugger (see the "Stepping" heading of the debugger help
1681 for more details). The debugger command STEP will no longer switch
1682 to the single-stepper REPL.
1683 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1684 for a type now works.
1685 * bug fix: loading of default sysinit file works. (thanks to Leonid
1687 * bug fix: better detection of circularities in the file-compiler.
1688 (reported by Marco Monteiro)
1689 * bug fix: the CL pathname functions now work with files that have
1690 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1691 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1692 systems with Unix98 pty semantics.
1693 * bug fix: ASDF-INSTALL will now work with bsd tar.
1694 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1696 * bug fix: timers expiring in dead threads no longer cause a
1697 type-error (reported by Paul "Nonny Mouse").
1698 * bug fix: thanks to more lightweight single-stepper instrumentation,
1699 code compiled with (DEBUG 3) will compile and execute significantly faster,
1700 and will have more accurate type-inferencing than before
1701 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1702 whose bindings are modified
1703 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1704 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1705 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1706 CL:SOFTWARE-VERSION with proper version
1708 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1709 * feature: implemented the READER-METHOD-CLASS and
1710 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1711 as specified by AMOP.
1712 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1714 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1715 (thanks to Lutz Euler)
1716 * optimization: hashing of general arrays and vectors has been
1717 improved. (reported by Any Fingerhut)
1718 * enhancement: SB-INTROSPECT is now able to find definitions of
1719 profiled functions. (thanks to Troels Henriksen)
1720 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1721 as well, allowing compiler-macros for SETF-functions to expand.
1722 * enhancement: step-instrumentation no longer wraps known
1723 single-value functions with multiple-value context, allowing
1724 better type inference.
1725 * fixed bug #337: use of MAKE-METHOD in method combination now works
1726 even in the presence of user-defined method classes. (reported by
1727 Bruno Haible and Pascal Costanza)
1728 * fixed bug #339(c): if there are applicable methods not part of any
1729 long-form method-combination group, call INVALID-METHOD-ERROR.
1730 (reported by Bruno Haible)
1731 * fixed bug #361: the :FUNCTION initarg in the protocol for
1732 initialization of methods can now be used to override
1733 internally-produced optimized functions. (reported by Bruno
1735 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1736 system-provided lambda expression no longer cause warnings about
1737 unbound #:|pv-table| symbols.
1738 * bug fix: improved the handling of type declarations and the
1739 detection of violations for keyword arguments with non-constant
1741 * bug fix: potentially erronous calls to PATHNAME and
1742 MERGE-PATHNAMES were being flushed in some cases.
1743 (reported by Richard Kreuter)
1744 * bug fix: compiled calls to TYPEP were mishandling obsolete
1745 instances. (reported by James Bielman and Attila Lendvai)
1746 * bug fix: format strings with ~> without matching ~< no longer
1747 trigger an AVER, but signal an understandable error instead.
1748 (reported by Antonio Martinez)
1749 * bug fix: specifying an output-file without a pathname-type for
1750 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1751 of input-file instead of "fasl". (reported by Robert Dodier)
1752 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1753 (reported by James Y Knight).
1754 * bug fix: compiler-macros-function did not consider the environment
1755 argument for shadowing by local functions.
1756 * bug fix: compiler-macros expansion was inhibited by local INLINE
1758 * bug fix: inline expansions of known functions were subject to
1759 step-instrumentation in high debug policies, leading to problems
1760 with type-inference.
1761 * bug fix: compiler failed to differentiate between different CONS
1762 types in some cases.
1763 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1764 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1765 * bug fix: #368: incorrect use of expressed vs. upgraded array
1767 * bug fix: #306a: more precise unions of array types.
1768 * thread-safety improvements:
1769 ** CONDITION-WAIT could return early on Linux, if the thread was
1770 interrupted and subsequently continued with SIGCONT.
1771 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1773 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1774 * added support for the ucs-2 external format. (contributed by Ivan
1776 * minor incompatible change: pretty printing of objects of type
1777 (cons symbol) is, in the default pprint-dispatch-table, now
1778 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1780 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1781 called later in a class's lifetime, possibly as late as when the
1782 first instance of the class is created. Previously,
1783 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1784 class became finalizeable.
1785 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1786 for multibyte external-format streams. (thanks to "vbzoli")
1787 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1788 with :ALLOCATION :CLASS inherited from superclasses of the
1790 * fixed bug: anonymous classes can now be created using the :NAME
1791 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1792 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1793 * fixed bug: core-files saved with :EXECUTABLE T can again be
1794 executed when SBCL_HOME isn't set. (reported by James Knight)
1795 * fixed bug: toplevel LOCALLY forms with declarations could
1796 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1797 * fixed bug: printing from several different threads using different
1798 values of *print-case* could cause invalid output, due to
1799 some internal special variables of the printer not being bound
1800 thread-locally (reported by Max Mikhanosha)
1801 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1802 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1803 (reported by Pascal Costanza)
1804 * fixed bug: FINALIZE-INHERITANCE is called from
1805 REINITIALIZE-INSTANCE on classes when the class has previously
1806 been finalized, as required by AMOP.
1807 * minor code generation optimizations:
1808 ** better register allocation in CLOS dispatching functions
1809 ** overflow detection when coercing signed bytes to fixnums on x86-64
1810 ** is now implemented with one IMUL instruction instead of three shifts
1811 ** more efficient bit-vector access on x86 and x86-64
1812 ** more efficient access to raw structure slots on x86 and x86-64
1813 * fixed some bugs revealed by Paul Dietz' test suite:
1814 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1815 return its argument.
1817 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1818 * feature: thread support on Solaris/x86, and experimental thread support
1820 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1822 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1823 default method for SLOT-UNBOUND.
1824 * minor incompatible change: prevent the user from specializing the
1825 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1826 somewhat counter to the intent of the protocol, I (CSR) think, and
1827 additionally it just doesn't work in SBCL as currently
1828 implemented, thanks to optimizations (that are always valid for
1829 the other three SLOT-VALUEish functions, but not for the setter).
1830 * minor incompatible change: the :SB-LDB feature is now enabled by
1831 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1832 the low-level debugger.
1833 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1834 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1835 down to an SB-SYS:FD-STREAM, allowing direct communication in
1836 more cases. Temporary files and pipes are still used as a fallback
1838 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1839 on the non-reentrant C functions localtime(3) and gmtime(3).
1840 * bug fix: global optimization policy was not visible in LOCALLY and
1842 * bug fix: class objects can be used as specializers in methods.
1843 (reported by Pascal Costanza)
1844 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1845 with a type error. (reported by blitz_ on #lisp)
1846 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1847 failed with a type error. (reported by Pascal Bourguignon)
1848 * bug fix: merging pathnames against defaults with :DIRECTORY
1849 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1850 (reported by James Y Knight)
1851 * bug fix: saving large (>2GB) cores on x86-64 now works
1852 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1853 constant index and a (simple-array (signed-byte 32)) array
1854 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1855 error (patch by Robert J. Macomber)
1856 * feature: TIME now displays the amount of run-time spent in GC
1857 * bug fix: The debugger now does a better job of respecting
1858 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1859 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1860 workaround for bug 403.)
1861 * bug fix: floating point exception handling now works on FreeBSD
1862 (thanks to NIIMI Satoshi)
1863 * fixed some bugs revealed by Paul Dietz' test suite:
1864 ** MISC.641: LET-conversion were not supposed to work in late
1866 * improvements to the Win32/x86 port:
1867 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1868 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1870 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1871 * new feature: source path information is generated for macro-expansion
1872 errors for use in IDE's like Slime (thanks to Helmut Eller)
1873 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1874 * bug fix: compiler does not loop forever on an invalid type in
1876 * improvement: compilation of most CLOS applications is significantly
1878 * optimization: added a limited bytecode compiler for simple toplevel
1879 forms, speeding up compilation and FASL loading
1880 * bug fix: the statistical profiler now properly distinguishes anonymous
1883 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1884 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1885 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1886 into subclasses of the finalized class. Now user calls to
1887 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1888 system return before any subclasses are finalized.
1889 * minor incompatible change: The reader no longer ignores errors
1890 regarding non-existent packages in #+ and #- feature tests.
1891 * new feature: command line options --no-sysinit, --no-userinit to
1892 inhibit loading the corresponding init files
1893 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1894 for sending data through UDP sockets (thanks to François-René Rideau)
1895 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1896 error is signalled instead (thanks to François-René Rideau)
1897 * minor incompatible change: Error signalling behaviour of lexical
1898 operations violating package locks has changed slightly. Refer to
1899 documentation on package locks for details.
1900 * enhancement: EVAL can process IF-expressions without resorting to the
1902 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1903 constant-folded properly due to missing out-of-line functions.
1904 (reported by Mika Pihlajamäki)
1905 * bug fix: LISTEN sometimes returned T even in cases where no data was
1906 immediately available from the stream
1907 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1908 were reversed. (reported by Levente Mészáros)
1909 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1910 when given a vector displaced to an adjustable array. (reported
1912 * bug fix: derivation of float boundaries from numbers outside the
1913 appropriate float range (reported by John Wiseman)
1914 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1916 * bug fix: precomputing cache entries for generic functions with
1917 some subclasses of specializers as yet invalid does not attempt to
1918 fill a cache line with a negative offset. (reported by Levente
1920 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1921 allow condition class objects as arguments to DOCUMENTATION and
1922 (SETF DOCUMENTATION); only find and set documentation for
1923 structure names for the STRUCTURE doc-type. (suggested by Gary
1925 * improvements to the Win32/x86 port:
1926 ** (user-homedir-pathname) and default initialization file
1927 locations now know about the user's "Documents and Settings"
1928 directory (thanks to Yaroslav Kavenchuk)
1929 ** run-program is implemented (thanks to Mike Thomas)
1930 ** sockets support (thanks to Timothy Ritchey)
1931 ** better backtrace support (thanks to Alastair Bridgewater)
1932 ** sb-grovel supported
1933 ** asdf-install and sb-posix work somewhat
1934 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1935 * improvements to the Solaris/x86 port:
1936 ** works on Solaris 11/Solaris Express
1937 ** floating-point exception handling support
1938 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1939 * fixed some bugs revealed by Paul Dietz' test suite:
1940 ** REMOVE-METHOD returns its generic function argument even when
1941 the method is not one of the generic functions' methods.
1942 ** objects declared as MEMBER types can be admissible arguments to
1943 structure accessors.
1944 ** printing characters should simply be printed by the FORMAT ~:C
1946 ** compiler failure when compiling functions with hairy constant
1947 defaults for optional parameters.
1948 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1949 function, which is already optimized.
1951 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1952 * new platform: experimental support for SBCL x86/Darwin, including
1953 MacOS X 10.4.5 on Intel.
1954 * new feature: Unicode character names are now known to the system
1955 (through CHAR-NAME and NAME-CHAR).
1956 * new feature: the filesystem location of SBCL's core file is
1957 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1958 * minor incompatible change: the contrib modules SB-POSIX and
1959 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1960 this change is to make it easier to distribute
1961 location-independent binaries.
1962 * bug fix: as implied by AMOP, standardized classes no longer have
1963 slots named by external symbols of public packages. (reported by
1965 * optimization: calling functions via constant symbols -- as in
1966 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1967 via the function object as in (FUNCALL #'FOO).
1968 * optimization: on x86 and x86-64, the calling convention for the
1969 case of dealing with an unknown number of values has been altered
1970 to be friendlier to the prediction heuristics implemented,
1971 particularly with reference to CALL and RET pairing. (thanks to
1972 Alastair Bridgewater)
1973 * optimization: on x86, the code for access to thread-local symbol
1974 values and binding/unbinding of thread-local symbols is smaller.
1975 (thanks to Alastair Bridgewater)
1976 * enhancement: CONSTANTP is now able to determine constantness of
1977 more complex forms, including calls to constant-foldable standardized
1978 functions and some special forms beyond QUOTE.
1979 * fixed bug: occasional GC crashes on Solaris/x86
1980 * optimization: x86-64 supports stack allocation of results of simple
1981 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1982 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1983 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1984 (thanks to James Knight)
1985 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1986 by the standard (thanks to Stephen Compall)
1988 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1989 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1990 be used for bundling the runtime and the core file into one
1991 executable binary. This feature is not currently supported on all SBCL
1992 platforms. (thanks to James Bielman and NIIMI Satoshi)
1993 * new feature: a generational or ephemeral garbage collector is now
1994 the default on the PowerPC platform (both Linux and Darwin). The
1995 old Cheney (stop and copy) collector is a build-time option.
1996 (thanks to Cyrus Harmon, after Raymond Toy)
1997 * minor incompatible change: the method by which SBCL finds its
1998 contributed modules has changed; it no longer relies on symbolic
1999 links from an $SBCL_HOME/systems directory, but searches directly
2000 in the subdirectories of $SBCL_HOME.
2001 * enhancement: the dynamic heap size on the Linux/PPC platform is
2002 markedly larger, even using the older Cheney garbage collector.
2003 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2004 certain complicated string types. (reported by Gary King)
2005 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2006 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2007 * fixed bug: DOCUMENTATION on structures no longer signals an
2008 error if no structure type of the right name exists. (reported by
2010 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2011 applicable non-standard primary or :AROUND method on
2012 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2013 no longer cause unbound variable errors. (reported by Kevin Reid)
2014 * fixed bug: metacircle resolution in cases where methods have slots
2015 added before the slots from STANDARD-METHOD. (reported by Jean
2017 * fixed bug: the Power PC assembly code for calling into lisp
2018 sometimes computed its return address wrongly (depending on the
2019 15th bit of the address, fixed at link time). This used to
2020 manifest itself in a segmentation violation while building PCL.
2021 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2022 many others over the years)
2023 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2024 the stack pointer (treated as a signed integer) is negative.
2025 (thanks to Peter van Eynde)
2027 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2028 * new platform: experimental support for the Windows operating
2029 system has been added. (thanks to Alastair Bridgewater)
2030 * fixed several bugs in and robustified the PPC FFI (including
2031 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2032 * bug fix: allow non-simple string symbol names (reported by Paul
2034 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2036 * bug fix: saving a core corrupted callbacks on x86/x86-64
2037 * bug fix: closed a loophole in metacircularity detection and
2038 grounding in the PCL implementation of CLOS.
2039 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2040 (reported by tomppa on #lisp)
2041 * bug fix: clear the direction flag on Lisp -> C transitions, as
2042 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2043 (reported by Andrej Grozin and Hendrik Maryns)
2044 * optimization: major improvements to GC efficiency on GENCGC platforms
2045 * optimization: faster implementation of EQUAL
2046 * optimization: emit more efficient opcodes for some common
2047 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2048 * optimization: several other minor code-generation improvements on x86-64
2049 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2051 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2052 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2053 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2054 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2055 by ANSI as a generic function, and for consistency (SETF
2056 GENERIC-FUNCTION-NAME) is treated likewise.
2057 * fixed bug #233.b: make constraint propagation notice when a variable
2058 value is changed after it is referenced but before it is used
2059 * fixed bug #296: no more arbitrary behaviour from filenames with
2060 odd characters as --load arguments. (reported by Adam Warner)
2061 * fixed bug #390: :CHARACTER-SET pathname components now work as
2062 expected. (reported by Tim Daly Jr)
2063 * fixed bug #391: complicated :TYPE intersections in slot
2064 definitions no longer cause an error in PCL internals.
2065 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2066 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2067 returning the number of octets which would be written to the
2068 file-stream. (thanks to Robert J. Macomber)
2069 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2070 arguments to the internal stream functions. (thanks to David
2072 * bug fix: stack exhaustion is now handled on the x86/SunOS
2073 platform. (thanks to Daisuke Homma)
2074 * bug fix: more accurate ROOM results on GENCGC platforms
2075 * optimization: improved type inference for arithmetic-for
2076 index variables in LOOP
2077 * optimization: faster floating-point SQRT on x86-64
2078 * fixed some bugs revealed by Paul Dietz' test suite:
2079 ** DOCUMENTATION returns NIL instead of "" for method combinations
2080 that don't have a docstring
2082 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2083 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2084 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2085 therefore are not customizeable by user code (as seems to be at
2086 least permitted and maybe required by AMOP). As a consolation,
2087 however, the SBCL implementation of these functions now calls
2088 REINITIALIZE-INSTANCE as specified by AMOP.
2089 * bug fix: slot-definition documentation is propagated as per ANSI
2090 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2091 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2092 argument, as do eslotd initialization methods. (from Pascal
2093 Costanza's "Closer" project)
2094 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2095 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2097 * bug fix: it is now possible to have more than one subclass of
2098 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2099 (reported by Bruno Haible, Pascal Costanza and others)
2100 * bug fix: the dependent update protocol now works for generic
2101 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2102 and Pascal Costanza)
2103 * bug fix: condition-class instances corresponding to
2104 DEFINE-CONDITION forms are now created eagerly. (reported by
2105 Kalle Olavi Niemitalo on comp.lang.lisp)
2106 * bug fix: floating point printing is more accurate in some
2107 circumstances. (thanks to Simon Alexander)
2108 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2109 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2110 * bug fix: callbacks on OS X now preserve stack-alignment.
2111 (thanks to Cyrus Harmon)
2112 * enhancement: the x86-64 disassembler is much better at
2113 disassembling SSE instructions. (thanks to Lutz Euler)
2114 * enhancement: CHECK-TYPE on a variable now allows type-inference
2115 (thanks to Vincent Arkesteijn)
2116 * optimization: improved performance of EUC-JP external format.
2117 (thanks to NIIMI Satoshi)
2118 * optimization: performance improvements to IO on file streams of
2119 :ELEMENT-TYPE CHARACTER
2120 * optimization: much faster memory allocation on x86-64
2121 * optimization: faster garbage collections (latency and throughput)
2123 * optimization: faster bignum subtraction and division on x86 and x86-64
2124 (thanks to Lutz Euler)
2125 * optimization: more accurate type-inference for loops that use a
2126 floating point index variable or a negative step.
2128 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2129 * bug fix: add a workaround to SBCL looping infinitely at startup on
2130 Linux kernels with apparently buggy implementations of personality().
2131 (thanks to Svein Ove Aas)
2132 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2133 (thanks to David Lichteblau)
2134 * bug fix: local bindings shadow global symbol macros for
2135 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2136 * optimization: non-open coded uses of numeric comparison operators
2137 (e.g. >) no longer cons when called with more than one parameter
2138 on platforms supporting dynamic-extent allocation.
2139 * enhancement: saving cores with foreign code loaded is now supported
2140 on MIPS/Linux in addition to the previously supported platforms.
2141 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2142 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2143 * bug fix: division by zero in sb-sprof when no samples were collected
2144 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2145 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2146 (thanks to Alexander Kjeldaas)
2147 * new feature: ignoring the return values of destructive functions
2148 like NREVERSE signals a compile-time style-warning.
2149 (thanks to Kevin Reid)
2150 * new feature: the alignment of alien structure fields can be
2151 explicitly specified. (thanks to Cyrus Harmon)
2152 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2153 and dump core on SIGQUIT
2155 ** incompatible change: threads do not inherit values of specials
2156 from their parents (see manual)
2157 ** bug fix: threads stacks belonging to dead threads are freed by the
2158 next exiting thread, no need to gc to collect thread stacks anymore
2159 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2160 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2161 ** bug fix: dynamic variable and thread start related gc lossage
2162 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2164 * fixed some bugs revealed by Paul Dietz' test suite:
2165 ** SUBTYPEP is slightly more accurate on heinously complicated
2166 CONS types where some of the members have uncertain (in the
2167 NIL, NIL sense) type relationships to each other.
2169 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2170 no longer purified unless :PURIFY T is explicitly specified.
2171 ** Non-purified cores are significantly smaller than before
2173 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2174 * new feature: timers based on Zach Beane's excellent timer package
2175 * added support for the following external formats: koi8-u,
2176 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2177 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2178 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2179 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2180 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2181 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2182 * incompatible change: a threaded SBCL will no longer revert to
2183 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2184 * bug fix: interrupts are disabled until startup is complete; no
2185 more sigsegvs when receiving a signal to soon
2186 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2188 * bug fix: add a workaround for the memory randomization features in
2189 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2190 workaround will only be in effect on systems with the proc filesystem
2192 * bug fix: printing objects of type HASH-TABLE signals a
2193 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2195 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2196 have been running for over 50 days. (reported by Gilbert Baumann)
2197 * bug fix: the logic for getting names of functions gets less
2198 confused when confronded with alternate-metaclass
2199 funcallable-instances. (reported by Cyrus Harmon)
2200 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2201 consistent, even on internal alternate-metaclass objects.
2202 * bug fix: flush closure information collected by physical
2203 environment analysis prepass before the main pass. (bug reported
2205 * bug fix: compiler pack phase does not modify a hashtable, which is
2206 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2207 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2208 may be expanded. (reported by Alexander <malishev> on c.l.l)
2209 * bug fix: no more style-warnings when compiling code using LAST
2210 under high-SPEED low-SPACE settings. (reported by David Wallin
2212 * fixed some incompatibilities between SBCL's MOP and the MOP
2214 ** the METAOBJECT class is now implemented;
2215 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2216 STANDARD-OBJECT, as required;
2217 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2218 now compatible (as required by VALIDATE-SUPERCLASS); there
2219 remains a consistency requirement over the presence or absence
2220 of the FUNCTION class in the superclass list of finalized
2221 classes; see the manual for more details;
2222 ** the :AROUND method for COMPUTE-SLOTS on
2223 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2224 requested slot ordering.
2226 ** bug fix: parent thread now can be gc'ed even with a live
2228 ** bug fix: binding a special with PROGV to no value is not
2229 the same as that symbol not having been bound (thanks to
2231 ** bug fix: binding specials is thread safe (thanks to
2233 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2234 and SB-SPROF do not die with 'no handler for signal XX in
2235 interrupt_handle_now(..)' anymore
2236 ** bug fix: WITH-TIMEOUT works with multiple running threads
2237 * fixed some bugs revealed by Paul Dietz' test suite:
2238 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2239 the :method-class keyword argument.
2241 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2242 * new port: the Solaris operating system on x86 processors is now
2243 mostly supported, though some rough edges in the environment
2244 remain. (thanks to Daisuke Homma)
2245 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2246 space for its heap. (thanks to Thiemo Seufer)
2247 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2248 closures. (thanks to Thiemo Seufer)
2249 * minor incompatible change: eof selects abort in the debugger.
2250 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2251 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2253 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2254 deprecated, and will go away in a future revision of SBCL.
2255 * minor incompatible change: GC-ON and GC-OFF are no longer
2256 implemented with a counter, it does not matter how many times gc
2257 is switched on or off
2258 * bug fix: discriminating functions for generic function classes
2259 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2260 make invalid assumptions about method precedence order. (reported
2262 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2263 platforms. (thanks to Thiemo Seufer)
2264 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2265 * bug fix: correct pathname printing with printer escaping is on.
2266 (thanks to Kevin Reid)
2267 * bug fix: complex VOP definitions in "user-space" no longer trigger
2268 package locks. (reported by Zach Beane)
2269 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2270 for funcallable-instance functions, and is no different from
2272 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2273 characters in the current readtable. (reported by Nicholas Neuss)
2274 * bug fix: SUBTYPEP on various CONS types returns more a more
2275 accurate acknowledgment of its certainty.
2276 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2277 lists in some cases. This partially fixes bug 384.
2278 * flush all standard streams before prompting in the REPL and the
2280 * bug fix: signal handling and triggering gc do not conflict
2281 directly anymore, in particular a high frequency sb-sprof does
2282 not prevent gc from running
2283 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2284 approximation for timezone and DST information between the
2285 universal time epoch and the smallest negative 32-bit time_t.
2286 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2287 year 1899 so long as the encoded time is non-negative.
2288 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2289 the correct answer for non-constant rotate amounts when performing
2290 an inline 32-bit rotation.
2292 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2293 there is only one thread in the session
2294 ** bug fix: memory leak for streams created in one thread and
2295 written to in another
2296 ** bug fix: lockup when compiled with gcc4
2297 ** bug fix: race that allows the gc to be triggered when gc is
2299 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2300 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2302 ** bug fix: finished threads are gc'ed properly
2303 * fixed some bugs revealed by Paul Dietz' test suite:
2304 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2305 has arguments with a different set of applicable methods from
2306 the orignal arguments.
2307 ** The type error thrown by MAP now has a correct expected-type
2309 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2310 name a compiled function.
2311 ** Three MISC tests where a large bignum was improperly coerced to
2312 a float that couldn't represent that bignum during type
2313 derivation were fixed.
2314 ** SUBTYPEP can now handle types involving the negation of a
2315 list-form FUNCTION type.
2316 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2317 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2318 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2320 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2321 * New feature: Experimental support for bivalent streams: streams
2322 opened with :element-type :default now allow character and binary
2323 (unsigned-byte 8) I/O
2324 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2325 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2327 * bug fix: no more highly sporadic "couldn't check whether ~S is
2328 readable" when reading a stream and an interrupt hits in the middle
2329 of a select system call
2330 * compiler better recognizes complex arrays (reported by Eduardo
2332 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2333 for variables on SBCL built with linkage-tables. (reported by Luis
2335 * various error reporting improvements.
2336 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2337 (Thanks to Thiemo Seufer)
2338 * bug fix: nested reader invokations work correctly
2339 * bug fix: it is possible to have simultaneous references to foreign
2340 code and foreign data with the same name.
2342 ** added x86-64 support
2343 ** incompatible change: the threading api now works with thread
2344 objects instead of thread ids
2345 ** bug fix: threads are protected from signals and interruption when
2346 starting up or going down
2347 ** bug fix: a race where an exiting thread could lose its stack to gc
2348 ** bug fix: don't halt on infinite error in threads if possible
2349 ** fixed numerous gc deadlocks introduced in the pthread merge
2350 ** bug fix: fixed thread safety issues in read and print
2351 ** bug fix: debugger doesn't hang on session lock if interrupted at
2352 an inappropriate moment
2353 ** bug fix: run-program is now thread safe(r)
2354 ** bug fix: inner with-recursive-lock no longer releases the mutex
2355 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2356 * fixed some bugs revealed by Paul Dietz' test suite:
2357 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2358 EXPECTED-TYPE slots filled.
2359 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2361 ** MAKE-CONDITION accepts classes as type-designators.
2362 ** COMPILE may never return NIL.
2363 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2364 range before calling Unix time functions
2366 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2367 * numerous signal handling fixes to increase stability
2368 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2369 * minor incompatible change: we now correctly canonize default
2370 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2371 as per the MOP, rather than the historical (INITARG INITFUNCTION
2372 INITFORM). (reported by Bruno Haible)
2373 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2374 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2375 for more information.
2376 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2377 pathname is a directory pathname.
2378 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2379 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2381 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2382 :METACLASS argument in addition to a class name. (reported by
2383 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2384 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2385 (reported by Bruno Haible; patch from Gerd Moellmann)
2386 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2388 * bug fix: more cleanups to the floating point exception handling on
2389 x86-64 (thanks to James Knight)
2390 * bug fix: the compiler does not try to constant fold calls of
2391 COERCE and BIT-* functions when they return freshly constructed
2392 objects. (reported by Nikodemus Siivola and Paul Dietz)
2393 * optimization: improved the MIPS versions of generic (in the
2394 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2395 * optimization: direct conversion of (unsigned-byte 32) to floats on
2396 the PowerPC platform.
2397 * optimization: structure instances with raw slots now use less
2398 memory, and probably show better memory locality. (thanks to
2400 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2401 are treated as requests for stack allocation on the x86-64,
2402 Alpha-32, PPC and SPARC platforms.
2403 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2404 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2405 (thanks to Tony Martinez)
2407 ** gcing a dead thread can no longer lead to lockups
2408 ** threads block signals until they are set up properly
2409 ** errno is no longer shared by threads
2410 ** interrupt-thread restores the eflags register on x86
2411 ** fixed some lockups due to gc/thread interaction
2412 * fixed some bugs revealed by Paul Dietz' test suite:
2413 ** invalid dotted lists no longer raise a read error when
2414 *READ-SUPPRESS* is T
2415 ** signal an error if a symbol that names a declaration is used
2416 as the name of a type, or vice versa
2417 ** allow using the (declare (typespec var*)) abbreviation for
2418 (declare (type typespec var*)) with all type specifiers
2419 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2420 ** always return NIL from PPRINT-POP when OBJECT is NIL
2421 ** don't signal errors when pretty-printing malformed LABELS,
2422 FLET or MACROLET forms
2423 ** declarations in a DOLIST body are also in scope for the
2425 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2427 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2430 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2431 * fixed cross-compiler leakages that prevented building a 32-bit
2432 target with a 64-bit host compiler.
2433 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2434 opened with :IF-EXISTS :OVERWRITE.
2435 * fixed bug 281: error for an invalid qualifier in a short-form method
2436 combination method is not signalled until the faulty method is called.
2437 * bug fix: iteration variable type inferrer failed to deal with open
2438 intervals. (reported by Alan Shields)
2439 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2440 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2441 or more runtime options were provided to the sbcl binary.
2442 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2443 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2444 * optimization: there's now a fast-path for fixnum arguments in the
2445 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2446 * optimization: the code generated on x86-64 is more compact thanks
2447 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2448 * bug fix: floating-point exception handling now partly works on
2449 x86-64. (Thanks to James Knight)
2450 * improvement to the MIPS backend from Thiemo Seufer: C-style
2451 64-bit long long arguments and return values to alien functions
2453 * fixed some bugs revealed by Paul Dietz' test suite:
2454 ** the type-error signalled from WARN has a filled-in DATUM slot.
2455 ** the type-error required when a stream is not associated with
2456 a file has the stream as its datum.
2457 ** type-errors on single-floats on x86-64 no longer have
2458 :INVALID-OBJECT as the datum
2459 ** the type-errors signalled for invalid function names now have
2460 a correct expected type
2461 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2462 for structures defined with a :TYPE. Documentation strings for
2463 typed structures are no longer immediately discarded
2464 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2465 broadcast streams and synonym streams. FILE-LENGTH now also works
2466 on broadcast streams.
2468 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2469 * incompatible change: the --noprogrammer option, deprecated since
2470 version 0.7.5, has been removed. Please use the equivalent
2471 --disable-debugger option instead.
2472 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2474 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2475 inoperational for a while now) has been completely removed.
2476 * null lexical environments are now printed as #<NULL-LEXENV>,
2477 significantly reducing the amount of clutter in typical backtraces.
2478 * documentation on weak pointers, finalization, and after GC hooks
2479 has been added to the manual.
2480 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2481 as other specialized array types, is much faster. SUBSEQ and
2482 COPY-SEQ on such arrays have also been sped up.
2483 * optimization: EQL is now more efficient when at least other argument
2484 is known to be of type (OR FIXNUM (NOT NUMBER)).
2485 * fixed bug: the runtime is now less vulnerable to changes in the
2486 size of the SBCL object on OS X, and virtual memory is reserved for
2487 all spaces that need to be at a fixed address.
2488 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2489 * fixed bug: finalizers and after GC hooks that cause consing are now
2491 * fixed bug: compiler error messages and summaries are now printed to
2492 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2493 * fixed inference of the upper bound of an iteration variable.
2494 (reported by Rajat Datta).
2495 * fixed bug 211e: calling local functions with duplicated constant
2496 keyword argument no longer causes a bogus style warning about an
2498 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2499 ftype declaration to be disregarded. (reported by Dave Roberts)
2500 * fixed bug 373: caused by erronous compilation of references to alien
2501 variables in the runtime on ppc/darwin.
2502 * fixed bug 376: CONJUGATE type deriver.
2503 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2504 (reported by Baughn on #lisp)
2505 * a cross-compiler bug on non-x86 platforms has been identified and
2506 fixed. (thanks to Bruno Haible)
2507 * improvements to the MIPS runtime code for increased stability.
2508 (thanks to Thiemo Seufer)
2509 * increased the maximimum compact environment size to allow
2510 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2511 * partial workaround for bug 135: don't name the function we're
2512 calling for hairy cases of EVAL, so as not to accumulate one environment
2513 entry per call to EVAL. (reported by Kevin Reid)
2514 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2515 * optimization: type testing for non-vector arrays should be faster.
2516 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2518 * bug fix: setting 31st element of a bit vector to zero did not work
2520 * bug fix: redefining a class definition which failed due to a
2521 previous accessor / function clash now works (but see BUGS entry
2522 #380 for more problems in this area). (thanks to Zach Beane)
2523 * the long form of DEFINE-METHOD-COMBINATION disables method group
2524 checking when given a single method group with pattern *. (thanks
2526 * on x86 compiler supports stack allocation of results of simple
2527 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2528 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2529 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2530 * fixed some bugs related to Unicode integration:
2531 ** the restarts for recovering from input and output encoding
2532 errors only appear when there is in fact such an error to
2534 * fixed some bugs revealed by Paul Dietz' test suite:
2535 ** MISC.549 and similar: late transformation of unsafe type
2536 assertions into derived types caused unexpected code
2538 ** SCALE-FLOAT type deriver is less wrong.
2539 ** type derivers for EXP, LOG and similar functions compute result
2540 types for complex arguments better.
2541 ** (MISC.563) CONJUGATE type deriver works for very restricted
2543 ** out-of-line type testers for character strings are available.
2544 ** EQUAL compiler transform understands specialness of objects
2546 ** accessing double-floats stored on the stack now works on x86-64.
2547 ** debugger internals could sometimes create invalid lispobjs,
2548 resulting in GC crashes.
2549 ** MISC.548: type check weakening can convert required type into
2551 ** initialization forms for bindings are not in scope of free special
2554 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2555 * incompatible change: thread support for non-NPTL systems has
2556 been removed - locking is buggy and unreliable. A threaded
2557 SBCL build will now warn at startup and refuse to create
2558 new threads, unless futex support is detected in the kernel
2559 * incompatible change: the top level REPL now has only an ABORT
2560 restart associated with it, not TOPLEVEL and ABORT as it used to.
2561 TOP and TOPLEVEL are now available as debugger commands for
2562 returning to the top level.
2563 * incompatible change: forms evaluated in the REPL now use the
2564 global optimization policy.
2565 * incompatible change: user- and system-initialization files are
2566 no longer processed with LOAD, but by READ and EVAL; hence the
2567 global optimization policy, startup package, readtable, etc,
2569 * The .fasl file format number has been incremented because of
2570 various incompatible changes.
2571 * internal entry point details and argument counts no longer appear
2572 in backtraces unless explicitly requested by setting
2573 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2574 * built-in and standard functions no longer have names like "top
2575 level local call to FOO".
2576 * fixed bug 32: functions defined in non-null lexical environments
2577 now have more legible printed representation
2578 * fixed bug 33: functions defined in non-null lexical environemnts
2579 are now more amenable to inspection by INSPECT.
2580 * workaround for bug 354: XEPs no longer appear in backtraces unless
2581 explicitly requested.
2582 * fixed bug: receiving the signal which results from attempting to
2583 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2584 SIGBUS on other *BSDs) on architectures where the C stack is also
2585 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2586 to debugger confusion or wild instability. (reported by Cheuksan
2588 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2589 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2590 (reported by Lutz Euler)
2591 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2592 compiled code. (reported by Paul Dietz)
2593 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2594 specialized parameter to a method to something that is not TYPEP
2595 the specializer is now possible.
2596 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2597 face of package deletion.
2598 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2599 pathname. (reported by David Tolpin on c.l.l)
2600 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2601 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2602 STRING-STREAM and FILE-STREAM, respectively.
2603 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2604 than previously; in addition, its test suite is now run on build.
2605 (thanks to Luke Gorrie)
2606 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2607 * optimization: added a immediate representation for single-floats
2609 * fixed some bugs revealed by Paul Dietz' test suite:
2610 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2611 ** attempting to create a package with a colliding nickname causes
2612 correctable errors to be signalled.
2613 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2614 ** several x86-64 backend bugs related to sign-extension of immediate
2617 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2618 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2619 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2621 * fixed loading of multiply forward-referenced layouts.
2622 (thanks to Cheuksan Wang)
2623 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2624 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2625 (see COMPILE-FILE documentation for details of :PRINT option)
2626 * fixed bugs 19 and 317: fixed-format floating point printing is
2627 more accurate. This also fixes a bug reported by Adam Warner
2628 related to the ~@F format directive.
2629 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2631 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2632 dispatch table if the from-char is a dispatch macro character.
2633 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2634 by the wordsize no longer ignore the last word. (reported by Lutz
2636 * fixed bug in type checking of dynamic-extent variables. (reported
2638 * optimization: sequence traversal functions use their freedom to
2639 coerce function designators to functions.
2640 * optimization: code with many calls to CLOS methods specialized on
2641 CLOS classes has had redundant type checks removed.
2642 * optimization: added declarations to speed up operations that access
2643 the internal character database (for example STRING-UPCASE)
2644 * optimization: comparison operations between floats and sufficiently small
2645 fixnums no longer create extra rationals
2646 * fixed some bugs related to Unicode integration:
2647 ** portions of multibyte characters at the end of buffers for
2648 character-based file input are correctly transferred to the
2649 start of the buffer at the next read.
2650 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2651 passing it through to OPEN.
2652 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2653 argument given to internal calls to OPEN.
2654 ** the built-in comment readers (introduced by character sequences
2655 ";" and "#|") are more forgiving to encoding errors; they will
2656 STYLE-WARN and then attempt to resync the stream at a character
2657 boundary. (thanks to Teemu Kalvas)
2658 * fixed some bugs in the x86-64 port:
2659 ** Negative short int return values from c-calls are sign-extended
2661 ** The stack is aligned to 16-bytes for c-calls, as required by
2662 the ABI. (thanks to Cheuksan Wang)
2663 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2664 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2665 for enums. (thanks to Vincent Arkesteijn)
2666 ** Multiple small optimizations and bugfixes for floating point
2668 * fixed some bugs revealed by Paul Dietz' test suite:
2669 ** Space, Tab, Linefeed, Return and Page have the invalid
2670 secondary constituent character trait.
2671 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2673 ** WITH-INPUT-FROM-STRING should only update the index place on
2675 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2676 works more reliably.
2677 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2678 with one-dimensional arrays with fill pointers.
2679 ** TYPE-OF failed on a complex with an integer realpart and a
2681 ** compiler failure during type inference for the code of form
2682 (IF (EQL X (THE ...)) ...) (MISC.535).
2684 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2685 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2686 platform. The port supports 61-bit fixnums, large memory spaces
2687 and reloading shared object files.
2688 * enhancement: saving cores with foreign code loaded is now
2689 supported on ppc/Darwin in addition to the previously supported
2691 * enhancement: the statistical profiler now walks deeper into the
2692 call stack for more meaningful call-graphs and accrued time
2693 reports (x86/x86-64 only). It also now reports time spent in
2695 * enhancement: it is now possible to trace most individual methods
2696 of a generic function in addition to tracing the generic function
2698 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2700 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2701 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2702 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2703 produces an error. (thanks to Vincent Arkesteijn)
2704 * bug fix: NAMESTRING on pathnames with :WILD components in their
2705 directories works correctly. (thanks to Artem V. Andreev)
2706 * fixed bug 125: compiler preserves identity of closures. (reported
2708 * bug fixed: functions with &REST arguments sometimes failed with
2709 "Undefined function" when compiled with (DEBUG 3). (reported by
2711 * bug fix: overflow during compiling of setting element of a bit
2712 vector with constant index and value. (reported by Timmy Douglas)
2713 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2714 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2715 * on x86 compiler partially supports stack allocation of dynamic-extent
2717 * GO and RETURN-FROM do not check the extent of their exit points
2718 when compiled with SAFETY 0.
2719 * fixed some bugs related to Unicode integration:
2720 ** encoding and decoding errors are now much more robustly
2721 handled; it should now be possible to recover even from invalid
2722 input or output to the terminal. (thanks to Teemu Kalvas)
2723 ** provided a first cut at implementing STRING-TO-OCTETS and
2724 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2725 ** altered the SB-MD5 contributed module slightly, changing the
2726 interface just enough for it to be supportable for builds where
2727 lisp characters are not eight bits.
2728 * fixed some bugs revealed by Paul Dietz' test suite:
2729 ** the FORMATTER-generated functions for ~V[ conditionals require
2730 the correct number of arguments.
2731 ** READ-FROM-STRING returns the mandated second value when applied
2732 to displaced strings.
2733 ** the #\Rubout and #\Backspace characters are treated as invalid
2734 constituent characters by the tokenizer.
2736 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2737 * new feature: reloading changed shared object files with
2738 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2739 * new feature: references to foreign variables and functions
2740 can now be compiled and loaded before the corresponding shared
2741 object file is loaded, as long as the foreign definitions are
2742 available at runtime.
2743 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2744 supported. (thanks to Dan Debertin)
2745 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2746 just keywords. (thanks to Vincent Arkesteijn)
2747 * fixed bug #331: structure-class instances corresponding to
2748 DEFSTRUCT forms are now created eagerly.
2749 * fixed bug #345: backtraces from calls to undefined functions work
2750 on x86 as well. Related bug #61 is now also partially fixed on x86
2751 (backtraces from throws to unknown catch tags.)
2752 * bug fix: lambda-list parsing is now stricter vrt. order and number
2753 of lambda-list keywords.
2754 * bug fix: as specified by AMOP, an error is signalled if a
2755 class-option appears multiple times in a DEFCLASS form. (reported
2757 * bug fix: RANDOM can be compiled when the compiler derives the type
2758 of its numeric argument as a disjoint set of small integers.
2759 (reported by Paul Dietz)
2760 * bug fix: starting a core saved with shared objects loaded when
2761 those objects are not available no longer causes threaded SBCL to
2762 hang. (reported by Sean Ross)
2763 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2765 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2766 argument, which must always be NIL. (reported by Kalle Niemitalo)
2767 * bug fix: printing 1.0d+23 no longer results in an error.
2768 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2769 * bug fix: structure slot setters preserve evaluation order. (thanks
2771 * fixed some bugs related to Unicode integration:
2772 ** RUN-PROGRAM can allow its child to take input from a Lisp
2773 stream. (reported by Stefan Scholl)
2774 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2775 locales. (reported by Ken Causey)
2776 * fixed some bugs revealed by Paul Dietz' test suite:
2777 ** INCF, DECF and REMF evaluate their place form as specified in
2779 ** FORMATTER expands ~{ ~} iteration directives with V or #
2780 parameters correctly.
2781 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2782 consequent uses no arguments correctly.
2783 ** the system has a partial understanding of the (COMPLEX RATIO)
2785 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2788 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2789 * new feature: a build-time option (controlled by the :SB-UNICODE
2790 keyword feature, enabled by default) for building the system with
2791 support for the entire 21-bit character space defined by the
2793 * new feature: the system now has rudimentary external-format
2794 support; the primary user-visible change at this time is that
2795 characters with the high bit set (such as lower-case-e-acute) will
2796 print correctly to a terminal in a UTF-8 environment.
2797 * minor incompatible change: BASE-CHAR no longer names a class;
2798 however, CHARACTER continues to do so, as required by ANSI.
2799 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2800 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2801 has been moved to the SB-EXT package (temporarily re-exported from
2803 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2804 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2806 * fixed bug #351: better error-handlind and reporting for malformed
2808 * fixed bug #350: bignum-printing is now more memory-efficient,
2809 allowing printing of very large bignums, eg. (expt 2 10000000).
2810 (reported by Bruno Haible)
2811 * fixed bug #302: better primitive-type selection for intersection
2813 * fixed bug #308: non-graphic characters now all have names, as
2814 required. (reported by Bruno Haible)
2815 * bug fix: redefining a class with different superclasses now correctly
2816 removes it from the direct-subclasses of its previous superclasses.
2817 (reported by David Morse)
2818 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2819 new value now works. (reported by Bruno Haible)
2820 * bug fix: correct canonicalization of multiple non-standard slot
2821 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2822 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2823 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2824 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2825 now exists, an signals an error.
2826 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2827 during macroexpansion for non-iteration variables as well. (reported
2828 by Bruno Haible for CMUCL)
2829 * bug fix: Cyclic structures and unprintable objects in compiler
2830 messages no longer cause errors. (reported by Bruno Haible)
2831 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2832 and READ-FROM-STRING all now return a primary value of NIL if
2833 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2834 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2835 (reported by Bruno Haible for CMUCL)
2836 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2837 do not designate a condition. (reported by Bruno Haible for
2839 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2840 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2841 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2842 permitting resolution in favour of any of the conflicting symbols.
2843 (reported by Bruno Haible for CMUCL)
2844 * bug fix: EQUAL compiler optimizations is less aggressive on
2845 strings which can potentially compare true despite having distinct
2846 specialized array element types.
2847 * bug fix: unit enumerations can be defined without dividing by
2848 zero. (thanks to Vincent Arkesteijn)
2849 * FORMAT compile-time argument count checking has been enhanced.
2850 (report from Bruno Haible for CMUCL)
2851 * a partial workaround for the bug 262: the compiler does not try to
2852 inline-expand a local function doing RETURN-FROM from a deleted
2853 BLOCK. (thanks to Peter Denno for the bug report and to David
2854 Wragg for the simple test case)
2855 * fixed some bugs revealed by Paul Dietz' test suite:
2856 ** RENAME-PACKAGE allows all package designators as new package
2858 ** constraint propagation and lambda variable substitution are
2859 more cautious in dealing with partially deleted code.
2860 ** compiler sometimes lost reoptimization passes.
2861 ** CERROR, given a condition as condition designator, passes its
2862 remaining arguments to the continue format control without
2864 ** Case-altering FORMAT directives work correctly on non-ASCII
2866 ** The REAL type specifier handles bounds outside the floating
2867 point ranges without signalling FLOATING-POINT-OVERFLOW.
2868 ** Functions with IR1-transformations can create intercomponent
2869 references to global functions.
2870 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2872 ** FORMAT ~R treats a nil value for its first parameter correctly.
2874 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2875 * enhancement: saving cores with foreign code loaded is now
2876 supported on x86/NetBSD and sparc/Linux in addition to the previously
2877 supported platforms.
2878 * bug fix: on some platforms repeated installations caused multiple
2879 copies of HTML documentation to be installed -- should not happen
2880 any more. (reported by Stefan Scholl)
2881 * bug fix: parsing self-recursive alien record types multiple times
2882 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2883 original patch by Helmut Eller for CMUCL)
2884 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2885 (thanks to Richard Kreuter)
2886 * bug fix: defining classes whose accessors are methods on existing
2887 generic functions in other (locked) packages no longer signals
2888 bogus package lock violations. (reported by François-René Rideau)
2889 * bug fix: special variables as DEFMETHOD parameters no longer have
2890 associated bogus type declarations. (reported by David Wragg and
2892 * bug fix: read-write consistency on streams of element-type
2893 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2894 * bug fix: redefiniton of the only method of a generic function with
2895 no DEFGENERIC no longer emits a full WARNING. In addition,
2896 redefinition of generic functions with no DEFGENERIC to an
2897 incompatible lambda list now signals an error. (thanks to Zach
2899 * bug fix: DEFGENERIC now works even when there's a function of the
2900 same name in an enclosing lexical environment. (thanks to Zach
2902 * fixed compiler failure, caused by instrumenting code during
2903 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2904 * optimization: added loop analysis and improved register allocation
2905 * fixed some bugs revealed by Paul Dietz' test suite:
2906 ** POSITION on displaced vectors with non-zero displacement
2907 returns the right answer.
2908 ** (SIMPLE-STRING) is a valid type specifier for sequence
2910 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2912 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2913 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2915 ** The justification version of the FORMAT ~< directive treats
2916 non-zero minpad parameter correctly.
2918 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2919 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2920 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2921 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2922 the supported interface.
2923 * new feature: Single-stepping of code compiled with DEBUG 2 or
2924 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2925 * new feature: saving cores with foreign code loaded is now
2926 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2927 Timothy Moore's work for CMUCL)
2928 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2929 parameters to * instead of NIL if no initform is supplied.
2930 (reported by Johan Bockgaard)
2931 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2932 correctly when FUNCALL appears as the car of the form. Note:
2933 despite this FUNCALL forms are not currently subject to
2934 compiler-macro expansion. (port of Raymond Toy's fix for the
2935 same from CMUCL, reported by Johan Bockgaard)
2936 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2937 (thanks for Teemu Kalvas)
2938 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2939 case instead of terminating the iteration (thanks for Julian
2940 Squires, Sean Champ and Raymond Toy)
2941 * bug fix: incorrect expansion of defgeneric that caused a style
2942 warning. (thanks for Zach Beane)
2943 * bug fix: slot accessor effective method computation works properly
2944 for classes with multiple non-standard applicable methods on
2945 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2946 * on x86 compiler supports stack allocation of results of LIST and
2947 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2948 CMUCL implementation by Gerd Moellmann)
2949 * fixed some bugs revealed by Paul Dietz' test suite:
2950 ** FORMAT strings with both the ~<~:;~> form of the justification
2951 directive and pretty-printing directives cause an error.
2953 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2954 * incompatible change: the internal functions
2955 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2956 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2957 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2958 instead of the old functions.
2959 * new feature: on platforms where "dladdr" is available foreign
2960 function names now appear in backtraces. (based on Helmut Eller's
2962 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2963 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2965 * documentation: ASDF manual is now distributed with SBCL.
2966 * bug fix: SBCL can now load its contributed modules with REQUIRE
2967 even if the system-provided entries have been removed from
2968 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2970 * bug fix: backtraces involving undefined functions or assembly
2971 routines are more informative. (thanks to Brian Downing)
2972 * bug fix: mutually referent alien structures now work correctly.
2973 (reported by Rick Taube)
2974 * bug fix: structures defined by WITH-ALIEN can be referred to
2975 within other definitions in the same WITH-ALIEN.
2976 * bug fix: division operators (MOD, TRUNCATE and the like) with
2977 constant zero divisors and integer dividends no longer generate
2979 * bug fix: provide default methods for INPUT-STREAM-P and
2980 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2981 * bug fix: improve the detection and resolution of MOP metacycles
2982 (where effective method computation depends on the generic function
2983 having its effective method computed). (reported by Bruno Haible)
2984 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2985 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2986 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2987 * bug fix: pathnames with relative directory components can be
2988 represented relative to default pathnames.
2989 * optimization: in taking the GCD of bignums, reduce the two bignums
2990 to approximately the same size (using Euclid's algorithm) before
2991 applying the more sophisticated binary GCD. (thanks to Juho
2993 * optimization: COUNT on bitvectors now operates word-at-a-time.
2994 * optimization: ASH with a positive, but not necessarily constant,
2995 (leftwards) shift, when in a modular context, is compiled to a
2997 * fixed some bugs revealed by Paul Dietz' test suite:
2998 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2999 if the corresponding argument is NIL.
3000 ** FORMAT directives accepting a minpad parameter treat negative
3002 ** literal commas as character parameters to FORMAT directives are
3004 ** literal spaces directly after ~<Newline> directives within a
3005 format-logical-block (~:< ~@:>) do not induce :FILL-style
3006 conditional newlines.
3007 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3008 as specified: it no longer includes conditional newlines).
3009 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3011 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3012 :PER-LINE-PREFIX argument does not evaluate to a string.
3014 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3015 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3016 the manual for details; for now, package locks can be disabled by
3017 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3018 if no major problems are found then it is likely that they will be
3019 compiled in unconditionally.
3020 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3021 unsupported operators on all platforms. To load a shared library
3022 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3023 object file, link it into a shared library outside of SBCL and
3024 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3026 * bug workaround: ROOM T and the GC were not working together
3027 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3028 reporting facility aren't preserved. That reporting has been
3029 disabled, so now until and unless someone figures out how to make it
3030 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3031 * minor incompatible change: as threatened around sbcl-0.8.0, the
3032 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3033 The symbols are also exported from SB-PCL for backwards
3034 compatibility, but more so than before SB-PCL should be treated as
3035 an implementation-internal package.
3036 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3038 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3039 It is known as of this release not to work on the Alpha, however.
3040 * fixed bug #167: errors signalled due to illegal syntax in method
3041 bodies are now more legible.
3042 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3043 designators and can hence be used with TYPEP.
3044 * fixed bug #333: CHECK-TYPE now ensures that the type error
3045 signalled, if any, has the right object to be accessed by
3046 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3047 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3048 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3050 * fixed bug #334: programmatic addition of slots using specialized
3051 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3052 and :ALLOCATION :CLASS slots.
3053 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3054 float exponents. (rereported by Peter Seibel)
3055 * fixed a bug: #\Space (and other whitespace characters) are no
3056 longer considered to be macro characters in standard syntax by
3057 GET-MACRO-CHARACTER.
3058 * fixed bug: initialization of condition class metaobjects no longer
3059 causes an instance of the condition to be created. (reported by
3061 * fixed bug: it is now possible to have slots such that
3062 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3063 description is neither :INSTANCE nor :CLASS.
3064 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3065 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3066 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3067 non-standard SLOT-DEFINITION-ALLOCATION values.
3068 * fixed bugs: various race conditions handling exiting threads.
3069 CL-PPCRE's thread torture test now passes.
3070 * fixed arguably-a-bug: GC time proportional to number of threads in
3071 system even when most of them are idle
3072 * optimization: improved performance of BIT and SBIT on bit-vectors.
3073 * .fasl file incompatibility: The fasl file version number has
3074 been incremented because of changes associated with package locks.
3076 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3077 * minor incompatible change: the system no longer provides
3078 optimization hints (conditions which are TYPEP
3079 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3080 mode; these hints are still emitted when higher SPEED optimization
3082 * new contrib module: a sampling profiler (profiling by statistical
3083 sampling, rather than by instrumenting functions) is available as
3084 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3085 * the behaviour of the standard function ED is now customizeable by
3086 third parties through a hook variable: see ED's documentation
3087 string for information on the protocol.
3088 * the compiler no longer emits efficiency notes for (FUNCALL X)
3089 when the type of X is uncertain under default optimization
3091 * fixed bug 276: mutating a binding of a specialized parameter to a
3092 method to something that is not TYPEP the specializer is now
3094 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3095 exhibit the required behaviour on the x86 platform. (thanks to
3096 Peter van Eynde, Eric Marsden and Bruno Haible)
3097 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3098 even for difficult arguments. (reported by Peter Graves)
3099 * fixed bug 141a: the backquote printer now descends quoted
3101 * fixed another bug in backquote printing: no more destructive
3102 modification of the form's list structure. (reported by Brian
3104 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3105 move between its address being taken and the call to
3106 interrupt_thread, fixing a crashing race condition.
3107 * the SB-POSIX contrib implementation has been adjusted so that it
3108 no longer exhibits ridiculously poor performance when constructing
3109 instances corresponding to C structs.
3111 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3112 * minor incompatible change: the sb-grovel contrib now treats C
3113 structures as alien (in the sense of SB-ALIEN) objects rather than
3114 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3115 has implications for memory management of client code
3116 (sb-grovel-returned objects must now be manually managed) and for
3117 type safety (alien objects now have full types).
3118 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3119 used to control emission of compiler diagnostics, rather than the
3120 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3121 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3122 quality should be considered deprecated.
3123 * install.sh now installs the user manual as well
3124 * (not quite a new documentable feature, but worth considering in
3125 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3126 beginnings of a semantically meaningful condition hierarchy is
3127 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3129 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3130 designator as the defaults argument.
3131 * fixed bug: Displaced arrays whose displaced-to array has become
3132 too small now cause ARRAY-DIMENSION to signal an error, providing
3133 for safer bounds-checking. (reported by Bruno Haible)
3134 * fixed bug: DEFCLASS slot definitions with identical :READER and
3135 :WRITER names now signal a reasonable error. (reported by Thomas
3137 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3139 * fixed bug: Invalid slot specification errors now print correctly.
3140 (thanks to Zach Beane)
3141 * fixed bug 320: Shared to local slot value transfers in class
3142 redefinitions now happen corrently from superclasses as
3143 well. (reported by Bruno Haible)
3144 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3146 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3147 improper lists correctly. (reported by Bruno Haible)
3148 * fixed bug 313: source-transform for <fun-name> was erroneously
3149 applied to a call of a value of a variable with name <fun-name>.
3150 (reported by Antonio Menezes Leitao)
3151 * fixed bug 307: The obsolete instance protocol ensures that
3152 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3153 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3154 remove dead unknown-values globs from the middle of the stack.
3155 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3156 easier to resume long computations after using *BREAK-ON-SIGNALS*
3157 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3158 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3159 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3160 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3161 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3162 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3164 * fixed a (fairly theoretical) bug in string printing: if
3165 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3166 does not have array-element-type equal to the most general string
3168 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3169 function name. (thanks to Nikodemus Siivola)
3170 * fixed bug: compile-time format string checker failed on
3171 non-closed ~{. (reported by Thomas F Burdick)
3172 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3173 don't warn on legal loop code involving more than one aggregate
3174 boolean. (thanks to Nikodemus Siivola)
3175 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3176 in keyword position to MAKE-PACKAGE was not being reported as
3178 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3179 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3181 * fixed bugs 280 and 312: the checking for multiple definitions in a
3182 file is less likely to become confused by uses of inline
3184 * fixed bug: the #S reader macro performs the keyword coercion
3185 specified for slot names. (reported by Kalle Niemitalo)
3186 * fixed bug: lambda lists may contain symbols whose names start with
3187 & but are not lambda-list-keywords; their occurrence triggers a
3189 * fixed bug 321: define-method-combination argument lambda lists do
3190 not cause invalid code to be generated when &optional or &aux
3191 variables have default values. (reported by Bruno Haible)
3192 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3193 have CLOS classes; this appears also to have fixed reported
3194 instability in stack exhaustion detection.
3195 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3196 MUFFLE-WARNING when no associated restart is present is now
3198 * optimization: rearranged the expansion of various defining macros
3199 so that each expands into only one top-level form in a
3200 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3202 * optimization: used a previously little-used slot in symbols to
3203 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3205 * fixed some bugs revealed by Paul Dietz' test suite:
3206 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3208 ** Fixed an optimization bug related to inheritance of initforms
3209 from local to shared slots.
3210 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3211 ** CAST optimizer forgot to flush argument derived type.
3212 ** print/read consistency on floats is now orders of magnitude
3213 more likely. (thanks also to Bruno Haible for a similar report
3215 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3216 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3217 for objects of type REAL. Make it so.
3218 ** SXHASH is specified (infelicitously) to respect similarity,
3219 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3220 it so. (thanks to Markus Ziegler)
3221 ** on the Alpha, the compiler succeeds in compiling functions
3222 returning a known number of arguments greater than 63.
3223 ** fixed handling of invalid NIL arguments in keyword position
3225 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3227 ** provided a readably-printable representation for RANDOM-STATE
3229 ** ensured that pathnames, where they have a namestring, always
3230 print using #P"..." syntax.
3232 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3233 * Support for the forthcoming 2.0 version of the NetBSD kernel
3234 running on x86 hardware has been added. (thanks to Perry
3235 E. Metzger most immediately, and others for their past work)
3236 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3237 current release version; SBCL's OpenBSD support had been broken
3238 since about the time of OpenBSD's switch to ELF binary format.)
3239 * [placeholder for DX summary]
3240 ** user code with &REST lists declared dynamic-extent, under high
3241 speed or space and low safety and debug optimization policy.
3242 * The manual has been converted to Texinfo format and the debugger
3243 chapter from the cmucl manual has been added.
3244 * A facility has been added to extract documentation strings from
3245 sbcl and store them as Texinfo-formatted snippets for inclusion in
3246 the manual (via Texinfo's @include directive)
3247 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3248 the test case to Dave Roberts)
3249 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3250 pointers. (reported by Sean Ross)
3251 * bug fix: PROFILE output is printed nicely even for large numerical
3252 values. (thanks to Zach Beane)
3253 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3254 greater than 32 handle EOF correctly.
3255 * bug fix: on X86 an immediate argument of the IMUL instruction is
3256 correctly printed in disassembly. (thanks to Lutz Euler)
3257 * bug fix: class slots in redefined classes preserve their old
3258 values. (thanks to Bruno Haible and Nikodemus Siivola)
3259 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3260 succeeds. (reported by Marco Baringer)
3261 * fixed some bugs revealed by Paul Dietz' test suite:
3262 ** READ-SEQUENCE now works on ECHO-STREAMs.
3263 ** RATIONALIZE works more according to its specification. (thanks
3266 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3267 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3268 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3269 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3270 should matter to you only if you rebind the printer control
3271 variables and then find you want different bindings in the
3272 debugger than in the ordinary execution of your program.)
3273 * The runtime build system has been tweaked to support building
3274 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3275 assembler and linker. (thanks to Nikodemus Siivola)
3276 * Unbound, undefined, undeclared variables now trigger full
3277 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3278 more often programmer error than deliberate exploitation of undefined
3280 * optimization: the hash algorithm for strings has changed to one
3281 that is less vulnerable to spurious collisions. (thanks to Juho
3283 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3284 needless bounds checking. (thanks to Juho Snellman)
3285 * optimization: implemented multiplication as a modular
3286 (UNSIGNED-BYTE 32) operation on the PPC backend.
3287 * fixed some bugs revealed by Paul Dietz' test suite:
3288 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3290 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3291 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3292 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3294 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3296 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3298 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3299 their output stream on EOF from read.
3300 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3301 have been read to end-of-file.
3302 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3304 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3305 description of determination of which consecutive characters
3307 ** Printing the "Space" character with escaping on now yields "#\\ ",
3308 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3309 ** Reading floating-point numbers with *READ-BASE* set to a number
3310 less than 10 works correctly.
3311 ** Reading floating-point numbers with *READ-BASE* set to a number
3312 more than 10 works correctly.
3313 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3314 the readtable currently in effect.
3316 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3317 * minor incompatible change: parsing of namestrings on a physical
3318 (Unix) host has changed; numbers after the final #\. in a
3319 namestring are no longer interpreted as a version field. This is
3320 intented to be largely invisible to the user, except that the
3321 meaning of the namestring "*.*.*" has changed: it now refers to a
3322 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3323 should usually be replaced by
3324 (make-pathname :name :wild :type :wild :version :wild)
3325 with the added benefit that this is more likely to be portable.
3326 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3327 option to OPEN now signals an error if the file being opened
3328 exists; this may have an impact on existing code.
3329 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3330 signals received, on the PowerPC platforms (both Linux and
3331 Darwin). (thanks to Pierre Mai for pointing out the location of
3333 * several fixes on OS X: The system now builds and runs cleanly on
3334 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3335 (thanks to Brian Mastenbrook)
3336 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3337 second-resolution: integer multiples of 1/3600 between -24 and 24.
3338 (thanks to Vincent Arkesteijn)
3339 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3340 type when called with 1 argument; PEEK-CHAR checked type of
3341 PEEK-TYPE only after having read first character from a
3342 stream. (reported by Peter Graves)
3343 * bug fix: the garbage collector now has much better locality
3344 behaviour, and in particular no longer treats all memory as being
3345 exhausted when many small objects point to each other in a deeply
3347 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3348 recognized as being TYPEP their class.
3349 * bug fix: the PUSHNEW documentation string has been corrected.
3350 (thanks to Vincent Arkesteijn)
3351 * bug fix: defaulting of the value for the last of an atypically
3352 large number of multiple values being bound was not being
3353 performed correctly on the Alpha or PPC platforms
3354 * optimization: implemented multiplication as a modular
3355 (UNSIGNED-BYTE 32) operation on the x86 backend.
3356 * optimization: SEARCH on simple-base-strings can now be open-coded.
3357 (see also contrib/compiler-extras.lisp for inspiration for
3358 teaching the compiler about the Boyer-Moore algorithm).
3359 * value, returned by MAX (and MIN) called with several EQUALP, but
3360 not EQL, arguments now does not depend on compiler settings.
3361 * fixed some bugs revealed by Paul Dietz' test suite:
3362 ** in stack analysis liveness information is propagated from
3363 non-local entry points.
3364 ** pathwise CAST removing failed when the CAST node did not start
3366 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3367 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3369 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3370 host is already defined.
3371 ** RENAME-FILE works on streams instead of signalling an internal
3373 ** PEEK-CHAR uses the current readtable when determining whether
3374 or not a character is whitespace.
3375 ** MERGE-PATHNAMES handles the case when the pathname does not
3376 specify a name while the default-pathname specifies a version.
3377 ** Pathnames now stand a better chance of respecting print/read
3379 ** Attempting to use standardized file system operators with a
3380 pathname with invalid :DIRECTORY components signals a
3382 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3384 ** DIRECTORY on logical pathnames is more correct.
3385 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3386 signal a TYPE-ERROR if their argument is not a stream.
3387 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3388 designator argument does not designate a stream.
3389 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3390 examining the synonym.
3391 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3393 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3394 element-type larger than ([UN]SIGNED-BYTE 32).
3396 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3397 * When built with the :SB-FUTEX feature, threaded builds now take
3398 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3399 for faster/more reliable mutex and condition variable support.
3400 * Incompatible change (but one you probably shouldn't have been using
3401 anyway): the interface and code for arbitrating between multiple
3402 threads in the same user session has been redesigned.
3403 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3404 error when called without an explicit environment argument.
3405 (thanks to Nikodemus Siivola)
3406 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3407 confused about their position. (thanks to Adam Warner and Gerd
3409 * bug fix: Pretty printing backquoted forms with unquotations in the
3410 argument list position of various code constructs such as LAMBDA
3411 now works correctly. (reported by Paul Dietz)
3412 * bug fix: Pretty printing unquotations no longer loses all
3413 stream position information.
3414 * optimization: performance of string output streams is now less
3415 poor for multiple small sequence writes.
3416 * optimization: performance of CSUBTYPEP in the presence of complex
3417 expressions involving CONS and NOT many times has been improved.
3418 (reported by Paul Dietz)
3419 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3421 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3422 streams for the REPL, for the debugger, and so on. (thanks to
3424 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3425 * fixed some bugs revealed by Paul Dietz' test suite:
3426 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3427 is ignored if it is too small, rather than propagating through
3428 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3429 ** extremely complex negations of CONS types were not being
3430 sufficiently canonicalized, leading to inconsistencies in
3432 ** VALUES tranformer lost derived type.
3434 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3435 * fixed a bootstrapping bug: the build process no longer assumes
3436 that the various BOOLE-related constants have the same value in
3437 host and target lisps. (noted by Paul Dietz' test suite on an
3438 SBCL binary built from CLISP)
3439 * The system can now be dynamically linked on the MIPS platform,
3440 which enables dynamic loading of foreign code from Lisp. (thanks
3441 to Ralf Baechle for discussions on the MIPS ABI)
3442 * The system now records debugging information for its own source
3443 files in a filesystem-position-independent manner, relative to
3444 the "SYS" logical host.
3445 * fixed a compiler bug: MV-LET convertion did not check references
3446 to the "max args" entry point. (reported by Brian Downing)
3447 * tweaked disassembly notes to be less confident about proclaiming
3448 some instruction as an LRA. (thanks to Brian Downing)
3449 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3450 now each have their own history, command character, and other
3451 characteristics. (thanks to David Lichteblau)
3452 * fixed some bugs revealed by Paul Dietz' test suite:
3453 ** compiler failure in compiling LOGAND expressions including a
3455 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3456 shift greater than 32.
3457 ** FLUSH-DEST did not mark blocks for type check regeneration.
3458 ** HANDLER-CASE failed to accept declarations in handler clauses
3459 in some circumstances.
3461 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3462 * New code in contrib/sb-introspect (still probably not entirely
3463 stable yet) provides some support for smart Lisp development
3464 environments like SLIME.
3465 * The conditions signalled for errors occurring when loading .fasl
3466 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3467 in a way which should help ASDF recover gracefully.
3468 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3469 stuff has been cleaned up. If you code contrib/ stuff, this might
3470 affect you, and you can look at contrib/README, contrib/STANDARDS,
3471 and/or the 0.8.4.27 diff to check.
3472 * In full calls the compiler now does not generate checks for declared
3473 argument types for all arguments.
3474 * various threading fixes
3475 ** and some experimental patches which didn't make it into
3476 the main tree for this release, but which are shipped in
3477 contrib/experimental-thread.patch as a possible fix for some
3478 failures (deadlock, spinning...) in GC-intensive multithreaded
3480 * fixed PPC build problem (source code incompatibility of different
3481 library versions): added offsetof() hackery which attempts to divine
3482 where glibc maintainers put uc_mcontext today
3483 * fixed bug 282: compiler does not trust type assertions while passing
3484 arguments to a full call.
3485 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3486 &OPTIONAL VALUES type parameter.
3487 * fix bug 214: algorithm for noting rejected templates is now more
3488 similar to that of template seletion. (also reported by rydis on
3490 * fixed bug 141b: printing backquoted information readably and prettily
3491 inserts a space where necessary.
3492 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3493 (CHARACTER 10) are now reported as errors, rather than propagated
3494 as unknown types. (reported by piso on #lisp)
3495 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3496 with values NIL and :ERROR. (thanks to Milan Zamazal)
3497 * fixed bug 191c: CLOS now does proper keyword argument checking as
3498 described in CLHS 7.6.5 and 7.6.5.1.
3499 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3500 longer raise an error; further, using a list as a for-as-arithmetic
3501 counter now raises a meaningful error.
3502 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3503 now understood by sequence creation functions such as MAKE-SEQUENCE
3505 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3506 a STRING-INPUT-STREAM.
3507 * compiler enhancement: SIGNUM is now better able to derive the type
3509 * type declarations inside WITH-SLOTS are checked. (reported by
3511 * fixed some bugs revealed by Paul Dietz' test suite:
3512 ** incorrect optimization of TRUNCATE for a positive first
3513 argument and negative second.
3514 ** compiler failure in let-convertion during flushing dead code.
3515 ** compiler failure while deriving type of TRUNCATE on an
3516 interval, containing 0.
3517 ** ASH of a negative bignum by a negative bignum count now returns
3519 ** intersection of CONS types now canonicalizes properly, fixing
3520 inconsistencies in SUBTYPEP.
3522 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3523 * incompatible change: The --disable-debugger command line
3524 option now clobbers the debugger at a more fundamental
3525 level, by redefining #'INVOKE-DEBUGGER instead of by
3526 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3527 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3528 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3529 enter the debugger REPL and then suffer recursive errors
3530 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3531 while under the new system, BREAK in --disable-debugger mode
3532 terminates the system just as an unhandled error would.
3533 * fixed compiler performance when processing loops with a step >1;
3534 * bug fix: DOCUMENTATION now retrieves generic function
3535 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3536 support has been systematized, and now supports the methods
3537 specified by ANSI, along with a default method and a method for
3538 slot documentation. (reported by Nathan Froyd)
3539 * bug fix: effective methods associated with a generic function are
3540 no longer cached over a change of that generic function's method
3541 combination. (reported by Andreas Fuchs)
3542 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3543 names a non-existent directory. (thanks to Andreas Fuchs)
3544 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3545 the PPC platform, lead to stack corruption; this has been fixed.
3546 (reported by Rainer Joswig)
3547 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3548 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3549 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3550 arithmetic in general, is now much more reliable on the PPC
3552 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3553 platform now returns the right answer.
3554 * optimization: restored some effective method precomputation in
3555 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3556 precomputation is now tunable.
3557 * optimization: compiler-internal data structure use has been
3558 reviewed, and changes have been made that should improve the
3559 performance of the compiler by about 20%.
3560 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3561 simple-base-strings and simple-bit-vectors is improved.
3562 * optimization: the optimization of 32-bit logical and arithmetic
3563 functions introduced in version 0.8.3 on the x86 has been
3564 implemented on the mips, ppc and sparc platforms; an
3565 implementation of the same facility, but for 64-bit arithmetic,
3566 has been added for the alpha.
3567 * microoptimization: the compiler is better able to make use of the
3568 x86 LEA instruction for multiplication by constants.
3569 * bug fix: in some situations compiler did not report usage of
3570 generic arithmetic in (SPEED 3) policy.
3571 * bug 145b fix: compiler used wrong type specifier while converting
3572 MEMBER-types to numeric.
3573 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3575 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3576 index argument now works properly on the Alpha platform.
3577 * bug fix: floating point exception treatment on the Alpha platform
3579 * bug fix: FILE-POSITION works much better on string input and
3580 output streams. (thanks to Nikodemus Siivola)
3581 * bug fix: many threading/garbage collection symptoms sorted.
3582 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3583 might be pseudo-atomic.
3584 * internal change: Stopping for GC is now done with signals not
3585 ptrace. GC is now done in whichever thread wanted it, instead of
3587 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3589 * bug fix: result form in DO is not contained in the implicit
3591 * incompatible change: ICR structure is changed; the value part of
3592 CONTINUATION is now called LVAR; corresponding functions are
3593 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3594 * added type deriver for ISQRT (thanks to Robert E. Brown).
3595 * bug fix: better support for loading from the command line when an
3596 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3598 * fixed some bugs revealed by Paul Dietz' test suite:
3599 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3600 ** ROUND and FROUND now give the right answer when given very
3601 small float arguments.
3602 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3604 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3605 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3606 ** LCM should return a non-negative integer.
3607 ** PARSE-INTEGER returned the index of a terminator instead of the
3608 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3609 ** PARSE-INTEGER returned an incorrect index being applied to a
3611 ** LCM with two arguments of 0 returns 0 rather than signalling
3613 ** unsigned addition of a 32-bit constant with the high bit set no
3614 longer causes an internal compiler error on the x86.
3615 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3616 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3617 with negative last argument.
3618 ** byte specifiers with zero size and position no longer cause
3619 an error during type derivation.
3620 ** bignum multiplication on the Alpha platform now returns the
3622 * porting: The system now builds on SuSE AMD64, although it still
3623 generates a 32-bit binary.
3624 * .fasl file incompatibility: The fasl file version number has
3625 been incremented (because of the changes to internal compiler
3626 data structures referred to above).
3628 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3629 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3630 more accurately, on the Darwin kernel running on PowerPC hardware.
3631 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3632 * Compiler code deletion notes now signal a condition of type
3633 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3634 an associated MUFFLE-WARNING restart.
3635 * The compiler now performs limited argument count validation of
3636 constant format strings in FORMAT, and where appropriate in ERROR,
3637 CERROR and WARN. (thanks to Gerd Moellmann)
3638 * New ASDF-INSTALL contrib can be used for automatic download and
3639 installation of third-party Lisp code from CCLAN or other sites
3641 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3642 which forces another thread to execute a function supplied by the
3644 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3645 now accept and act upon their :ELEMENT-TYPE keyword argument.
3646 (reported by Martin Atzmueller, Edi Weitz)
3647 * bug fix: FILE-POSITION now accepts position designators up to
3648 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3649 is the greater. (thanks to Patrik Nordebo)
3650 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3651 Kalle Olavi Niemitalo)
3652 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3653 printable. (reported by Eric Marsden)
3654 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3655 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3656 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3657 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3658 (thanks to Stig Sandoe)
3659 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3660 UNREAD-CHAR now correctly includes the unread character in the
3661 target sequence. (thanks to Gerd Moellmann)
3662 * bug fix in threaded builds: the system can now be suspended and
3663 resumed by shell job control with minimal disruption.
3664 * bug fixes in times and timezones >2038AD
3665 * better handling of "where is GNU make?" problem in build scripts
3666 (thanks to Nikodemus Siivola)
3667 * new optimization: inside a named function any reference to a
3668 function with the same name is considered to be a self-reference;
3669 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3670 optimization quality.
3671 * new optimization on x86: logical functions and + now have
3672 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3673 used when the result is truncated to 32 bits.
3674 * VALUES declaration is partially enabled.
3675 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3676 * fixed some bugs revealed by Paul Dietz' test suite:
3677 ** The system now obeys the constraint imposed by
3678 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3679 types form a lattice under type intersection.
3680 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3681 ** ASSOC now ignores NIL elements in an alist.
3682 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3683 and (1+ MOST-POSITIVE-FIXNUM) answers.
3684 ** The addition of a method with invalid qualifiers to a generic
3685 function does not cause an error to be signalled immediately;
3686 a warning is signalled, and the error is generated only on
3687 calling the generic function.
3688 * changed .fasl file version number, in part to add type codes for
3689 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3690 obscure ANSI requirements
3692 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3693 * fixed bug 148: failure to inline-expand a local function left
3694 garbage, confusing the compiler.
3695 * fixed bugs 3cd: structure slot readers perform type check if the
3696 slot can have an invalid value (i.e. it is either not initialized
3697 or can be written with a less specific slot writer).
3698 * bug fix: the compiler now traps array references to elements off
3699 the end of an array; previously, the bounds checking in some
3700 circumstances could go off-by-one.
3701 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3703 * type declarations for array element types now obey the description
3704 on the CLHS page "Declaration TYPE", as per discussions on
3705 sbcl-help around 2003-05-08. This means that a declaration
3706 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3707 declaration, all references to BAR will be asserted or assumed
3708 (with THE, so dependent on compiler policy) to involve objects of
3709 type FOO. Note that no such declaration is implied in
3710 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3711 * declared types of functions from the "Conditions"
3712 chapter. (reported by Paul Dietz)
3713 * bug fix: CERROR accepts a function as its first argument.
3714 * bug fix: NTH an NTHCDR accept a bignum as index
3715 arguments. (reported by Adam Warner)
3716 * optimization: character compare routines now optimize comparing
3717 against a constant character. (reported by Gilbert Baumann)
3718 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3719 argument now works properly on the MIPS platform.
3720 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3721 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3722 declared to have a functional type, does not cause an error
3724 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3725 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3726 * fixed bug: if last continuation of a deleted block has a
3727 destination, this destination should be deleted too. (reported by
3729 * fixed a bug in the bootstrap process: the host compiler's values
3730 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3731 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3732 test case from Patrik Nordebo)
3733 * improved the ability of the disassembler on the PPC platform to
3734 provide helpful disassembly notes.
3735 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3736 the class in more cases than previously.
3737 * bug fix: FILE-POSITION now understands :START and :END for
3738 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3739 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3740 8) data. (thanks to David Lichteblau)
3741 * bug fix: it is possible to add a method to a generic function
3742 without lambda list.
3743 * bug fix: reader failed to signal END-OF-FILE inside an
3744 object representation. (reported by Nikodemus Siivola)
3745 * fixed some bugs revealed by Paul Dietz' test suite:
3746 ** LAST and [N]BUTLAST should accept a bignum.
3747 ** condition slot accessors are methods.
3748 ** (VECTOR NIL) is a subtype of STRING.
3750 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3751 * minor incompatible change: some nonsensical specialized lambda
3752 lists (used in DEFMETHOD) which were previously ignored now signal
3754 * minor incompatible change: the system is now aware of the types of
3755 variables in the COMMON-LISP package, and will signal errors for
3756 most violations of these type constraints (where previously they
3757 were silently accepted).
3758 * minor incompatible change: COMPILE-FILE now uses the freedom
3759 afforded (ANSI 3.2.2.3) to use derived function types for
3760 functions defined in the same file. This also permits the system
3761 to warn on static type mismatches and function
3762 redefinition. (Currently it does not work with high DEBUG level.)
3763 * minor incompatible change: VALUES declaration is disabled.
3764 * When issuing notes, the compiler now signals a condition of type
3765 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3766 restart for use in user handlers. It is expected that the
3767 COMPILER-NOTE condition will eventually become a condition
3768 supertype to a hierarchy of note types, which will then be
3769 handleable in a similar fashion. However, at the moment, no such
3770 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3771 but it's an implementation detail, not a classification for the
3773 * Changes in type checking closed the following bugs:
3774 ** type checking of unused values (192b, 194d, 203);
3775 ** template selection based on unsafe type assertions (192c, 236);
3776 ** type checking in branches (194bc).
3777 * A short form of VALUES type specifier has ANSI meaning (it has
3778 increased the number of situations when SBCL cannot perform type
3780 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3781 keywords or constants is permissible.
3782 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3783 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3784 classes. (thanks to Antonio Martinez)
3785 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3786 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3787 argument to a pretty-print stream. Instead, it leaves any such
3788 operations to DESCRIBE-OBJECT methods.
3789 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3791 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3792 lambda lists. (thanks to David Lichteblau)
3793 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3794 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3795 (thanks to Gerd Moellmann)
3796 * fixed bug 246: increased compilation speed of long
3797 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3799 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3801 * DEFCONSTANT now throws a condition of type
3802 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3803 constant to a non-EQL value; CONTINUE and ABORT restarts
3804 respectively change and preserve the value.
3805 * fixed bug 63: The code walker, part of the implementation of CLOS,
3806 is now better at handling symbol macros.
3807 * bug fix: There is no longer an internal implementation type named
3808 CL:LENGTH. (reported by Raymond Toy)
3809 * bug fix: In macro-like defining macros/special operators the
3810 implicit block does not enclose the lambda list.
3811 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3812 enclosed in parentheses) are not suitable as type specifiers, and
3813 their use properly signals an error now.
3814 * bug fix: An argument count mismatch for a type specifier in code
3815 being compiled no longer causes an unhandled error at compile
3816 time, but signals a compile-time warning.
3817 * fixed simple vector readable printing
3818 * bug fix: DESCRIBE takes more care over whether the class
3819 precedence list slot of a class is bound before accessing it.
3820 (reported by Markus Krummenacker)
3821 * bug fix: FORMATTER can successfully compile pretty-printer format
3822 strings which use variants of the ~* directive inside.
3823 * bug fix: SEARCH now applies its TEST predicate to the elements of
3824 the arguments in the correct order. (thanks to Wolfhard Buss)
3825 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3826 in type inference. (thanks to Robert E. Brown)
3827 * bug fix: Reading in symbols with an explicit package name of ""
3828 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3829 * fixed some bugs revealed by Paul Dietz' test suite:
3830 ** NIL is now allowed as a structure slot name.
3831 ** Arbitrary numbers, not just REALs, are allowed in certain
3832 circumstances in LOOP for-as-arithmetic clauses.
3833 ** Multiple class redefinitions before slot access no longer
3834 causes a type error.
3835 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3836 association between the name and a class.
3837 ** Generic functions with non-standard method-combination and over
3838 five methods all of which return constants no longer return NIL
3839 after the first few invocations. (thanks to Gerd Moellmann)
3840 ** CALL-NEXT-METHOD with no arguments now passes the original
3841 values of the arguments, even in the presence of assignment.
3842 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3844 ** DISASSEMBLE works with closures and funcallable instances.
3845 ** ADD-METHOD now returns the generic function, not the new method.
3846 ** FIND-METHOD signals an error if the lengths of the specializers
3847 is incompatible with the generic function, even if the ERRORP
3849 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3850 which its argument is a member.
3851 ** DEFCLASS only redefines the class named by its class-name
3852 argument if that name is the proper name of the class;
3853 otherwise, it creates a new class.
3854 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3855 of the UNBOUND-SLOT condition to the name of the slot.
3856 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3857 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3858 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3859 SLOT-MAKUNBOUND in the specified fashion.
3861 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3862 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3863 cross-compilation host. As a consequence, we can now bootstrap our
3864 way up to SBCL starting with a bare gcc toolchain and human-readable
3865 source code (first the source to CLISP, then the source to SBCL).
3866 * A contributed module containing a partial implementation of the
3867 simple-streams interface has been included. (thanks to Rudi
3869 * A contributed module implementing the RFC1321 Message Digest
3870 Algorithm, known as MD5, has been included.
3871 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3872 no longer has any effect, as the code controlled by this feature
3873 has been deleted. (As far as we know, no-one has ever built using
3874 this feature, and its semantics were confused in any case).
3875 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3876 work on conditions (as required by the ANSI specification),
3877 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3878 expected behaviour on conditions. Users should note, however,
3879 that such behaviour is not required by the ANSI specification,
3880 and so use of this behaviour may render their code unportable.
3881 * fixed some bugs revealed by Paul Dietz' test suite:
3882 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3884 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3885 ** SXHASH on condition objects no longer returns NIL.
3886 ** :ALLOCATION :CLASS slots are better treated; their values are
3887 updated on class redefinition, and initforms inherited from
3888 superclasses are applied.
3889 ** REMOVE-METHOD returns its generic function argument even when
3890 no method was removed.
3891 ** SHARED-INITIALIZE now initializes the values of the requested
3892 slots, including those with :ALLOCATION :CLASS.
3893 ** ALLOCATE-INSTANCE now works on structure classes defined via
3894 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3896 ** SLOT-EXISTS-P now works on conditions, as well as structures
3898 ** MAKE-LOAD-FORM now has the required methods on
3899 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3900 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3901 keyword, and now implements the SLOT-NAMES argument.
3902 ** methods with &OPTIONAL arguments no longer allow too many
3903 arguments to be passed in the call without error.
3904 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3905 option is consistent with the required arguments of the generic
3906 function lambda list.
3907 * bug fix: REQUIRE accepts a string designator. (Thanks to
3909 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3910 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3911 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3912 * bug fix: The compiler now checks for duplicated variables in macro
3914 * bug fix: SETQ on globals returns the correct value.
3915 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3916 not a COMPILER-ERROR (followed by some other strange error on
3917 choosing the CONTINUE restart).
3918 * bug fix: make.sh and friends are now more consistent in the way that
3919 they look for GNU "make".
3921 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3922 * experimental native threads support (on x86 Linux >=2.4 only).
3923 This is not compiled in by default: you need to add :SB-THREAD to
3924 the target features. See the "Beyond ANSI" chapter of the manual
3926 * fix for longstanding nonANSIism: The old distinction between
3927 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3928 The return value from CL:FIND-CLASS is now a CLOS class, and
3929 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3930 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3931 * An interface to the MetaObject Protocol, as described in Kiczales,
3932 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3933 MIT Press, 1991, is available from the SB-MOP package.
3934 * incompatible change: the SB-PCL package should now be considered
3935 a private implementation detail, and no longer a semi-private MOP
3937 * minor incompatible change: due to rearrangement for threads, the
3938 control stack and binding stack are now allocated at arbitrary
3939 addresses instead of being hardcoded per-port. Users affected by
3940 this probably have to be doing advanced things with shared
3941 libraries, and will know who they are.
3942 * minor incompatible change: Previously, all --eval forms used were
3943 processed with READ before any of them were processed with EVAL.
3944 Now each --eval form is processed with both READ and EVAL before
3945 the next --eval form is processed. (Thus package operations like
3946 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3947 work as the user might reasonably expect.)
3948 * minor incompatible change: *STANDARD-INPUT* is now only an
3949 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3951 * minor incompatible change: Y-OR-N-P is now character-oriented,
3952 not line oriented. Also, YES-OR-NO-P now works without errors.
3953 (thanks to Antonio Martinez)
3954 * sb-aclrepl module improvements: an integrated inspector, added
3955 repl features, and a bug fix to :trace command.
3956 * Known functions, which cannot be open coded by the backend, are
3957 considered to be able to check types of their arguments. (fixing
3958 a bug report by Nathan J. Froyd)
3959 * fixed a bug in computing method discriminating functions: It is
3960 now possible to define methods specialized on classes which have
3961 forward-referenced superclasses. (thanks to Gerd Moellmann)
3962 * fixed evaluation order in optional entries (reported by Gilbert
3964 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3965 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3966 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3967 required-by-AMOP NAME argument, as well as CLASS and
3968 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3969 * fixed bug 20: DEFMETHOD can define methods using names that are
3970 not the proper names of classes to designate class specializers.
3971 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3972 Unix file descriptors, instead of blowing up. (thanks to Antonio
3974 * Garbage collection refactoring: user-visible change is that a
3975 call to the GC function during WITHOUT-GCING will not do garbage
3976 collection until the end of the WITHOUT-GCING. If you were doing
3977 this you were probably losing anyway.
3978 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3979 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3980 TYPEP the latter but not the former.
3981 * The compiler issues a full WARNING for calls to undefined functions
3982 with names from the CL package.
3983 * MAP-INTO for a vector destination is open coded. (reported by
3984 Brian Downing on c.l.l)
3985 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3986 documentation string.
3987 * fixed some bugs revealed by Paul Dietz' test suite:
3988 ** COPY-ALIST now signals an error if its argument is a dotted
3990 ** Condition slots are now accessed more correctly in the presence
3991 of multiple initargs for a given slot.
3992 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3993 exclude restarts of the same name associated with a different
3995 ** DEFCLASS of forward-referenced classes with another
3996 forward-referenced class in the superclasses list no longer
3998 ** Condition slots are now initialized once each, not multiple
3999 times. (thanks to Gerd Moellmann)
4000 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4002 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4003 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4004 arguments contain duplicated elements.
4005 ** RESTART-CASE understands local macros.
4006 ** RESTART-CASE associates exactly its own restarts with a condition.
4007 ** ENDP in safe mode checks its argument to be of type LIST.
4008 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4009 in question is unbound.
4010 ** Optimized MAKE-INSTANCE functions no longer cause internal
4011 assertion failures in the presence of duplicate initargs.
4012 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4013 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4014 propagated even in the ctor optimized implementation of
4016 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4018 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4019 * a better implementation of SXHASH on (simple) bit vectors,
4020 measured both in execution speed and in distribution of results
4021 over the positive fixnums, has been installed. Likewise, a better
4022 implementation of EQUAL for simple bit vectors is now available.
4023 * fixed CEILING optimization for a divisor of form 2^k.
4024 * fixed bug 240 (emitting extra style warnings "using the lexical
4025 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4026 by Antonio Martinez)
4027 * fixed SXHASH, giving different results for NIL depending on type
4028 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4029 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4030 variable. (found by Rolf Wester)
4031 * SBCL does not ignore type declarations for special
4032 variables. (reported by rif on c.l.l 2003-03-05)
4033 * some bug fixes in contrib/sb-aclrepl/
4034 * fixed some bugs revealed by Paul Dietz' test suite:
4035 ** a bug in the CONS type specifier, whereby the CAR and CDR
4036 types got intertwined, has been fixed;
4037 ** the type system is now able to reason about the interaction
4038 between INTEGER and RATIO types more completely;
4039 ** APPEND, [N]REVERSE and NRECONC check that those their
4040 arguments, which must be proper lists, are really so;
4041 ** An array specialized to be unable to hold elements has been
4042 implemented, as required -- yes, really -- by ANSI;
4043 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4044 on malformed property lists;
4046 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4047 * incompatible packaging change: in line with Unix convention,
4048 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4049 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4050 * REQUIRE and PROVIDE are now optionally capable of doing something
4051 useful. See the documentation string for REQUIRE.
4052 * infrastructure for a managed SBCL contrib system: contributed
4053 modules in this release include:
4054 ** the ASDF system definition facility;
4055 ** an interface to the BSD Sockets API;
4056 ** an ACL-like convenience interface to the repl;
4057 (thanks to Kevin Rosenberg)
4058 ** an implementation of ROTATE-BYTE, with efficient implementation
4060 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4061 gives a closer approximation to the right answer than previously.
4062 (thanks to Raymond Toy)
4063 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4064 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4065 optional environment arguments, as required by ANSI.
4066 * fixed bugs in other functions taking environment objects, allowing
4067 calls with an explicit NIL environment argument to be compiled
4069 * fixed bug 228: primary return values from
4070 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4071 COMPILE or FUNCTION.
4072 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4073 :TYPE will no longer signal errors on innocuous objects.
4074 * fixed bug 231b: SETQ is better at respecting type declarations in
4075 the lexical environment.
4076 * fixed a bug in DEFCLASS: classes named by symbols with no or
4077 unprintable packages can now be defined.
4078 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4079 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4080 * fixed compiler failure related to checking types of functions.
4081 (reported by Robert E. Brown)
4082 * the compiler is now much more consistent in its error-checking
4083 treatment of bounding index arguments to sequence functions: in
4084 (SAFETY 3) code, errors will be signalled in almost all cases if
4085 invalid sequence bounding indices are passed to functions defined
4086 by ANSI to operate on sequences.
4087 * fixed a bug in the build procedure: documentation of SBCL-specific
4088 packages is now preserved and available in the final Lisp image.
4089 * lifted FDEFINITION lookup out of loops in the implementation of
4090 many list operations. (thanks to Robert E. Brown)
4091 * fixed a bug in the reader: the #n# reader macro now works for
4092 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4093 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4094 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4095 E. Brown and Tony Martinez respectively)
4096 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4097 SLOT-BOUNDP: in particular, it is now able to optimize them much
4098 better, and is now not vulnerable to having packages renamed.
4099 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4100 always called when a slot is not present in an instance. (thanks
4102 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4103 longer signal an error on unreading a character following EOF on
4104 the previous constituent stream. (thanks to Tony Martinez)
4105 * fixed some bugs revealed by Paul Dietz' test suite:
4106 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4107 not just nonnegative fixnums;
4108 ** the logical bit-array operators such as BIT-AND now accept an
4109 explicit NIL for their "opt-arg" argument (to indicate a
4110 freshly-consed result bit-array);
4111 ** ELT now signals an error on an invalid sequence index in safe
4113 ** the type system is now cleverer about negations of numeric
4114 types, and consequently understands the BIGNUM and RATIO types
4116 ** the type system is now cleverer about the interaction between
4117 INTEGER and RATIO types: while bugs still remain, many more
4118 cases are accurately computed;
4119 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4120 if it is in the last clause;
4121 ** CONSTANTLY now correctly returns a side-effect-free function in
4123 ** DECLARE is no longer treated as a special-operator; in
4124 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4125 * incremented fasl file version number due to the change in the
4126 DEFSTRUCT-SLOT-DESCRIPTION structure.
4128 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4129 * minor incompatible change: code processed by the "interpreter" or
4130 EVAL now has a compilation optimization policy of (DEBUG 2)
4131 (changed from (DEBUG 1)) to improve debuggability of interactive
4132 development, and to allow the use of the debug RETURN command in
4134 * an experimental implementation of the RETURN command for the
4135 debugger has been included. (thanks to Frederik Kuivinen)
4136 * fixed bug 62: constraints were not propagated into a loop.
4137 * fixed bug in embedded calls of SORT (reported and investigated by
4139 * fixed some bugs revealed by Paul Dietz' test suite:
4140 ** printing and reading of arrays with some dimensions having
4141 length 0 (thanks to Gerd Moellmann);
4142 ** BOA constructor with &AUX argument without a default value does
4143 not cause a type error;
4144 ** CONSTANTP now returns true for all self-evaluating objects.
4146 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4147 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4148 accessors that are related by inheritance, as specified in the
4149 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4150 Valtteri Vuorikoski)
4151 * The compiler is now able to inline functions that were defined in
4152 a complex lexical environment (e.g. inside a MACROLET).
4153 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4155 * Support for the upcoming FreeBSD-5.0 release has been included.
4156 (thanks to Dag-Erling Smorgrav)
4157 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4158 effect when it is not in a toplevel context.
4159 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4160 stand a better chance of being correct. (thanks to Gerd
4162 * fixed bug in COERCE, which now signals an error on coercing a
4163 rational to a bounded real type which excludes the expected
4165 * The compiler is now able to derive types more accurately from the
4166 COERCE and COMPILE functions.
4167 * fixed bug 223: functional binding is considered to be constant
4168 only for symbols in the CL package.
4169 * fixed bug 231: SETQ did not check the type of a variable being set
4170 (reported by Robert E. Brown)
4171 * A new optimization for MAKE-INSTANCE has been included, fixing
4172 various bugs (including relating to :ALLOCATION :CLASS slots and
4173 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4175 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4176 ** As required by ANSI, LOOP now disallows anonymous collection
4177 clauses such as COLLECT I in conjunction with aggregate boolean
4178 clauses such as THEREIS (= I 1);
4179 ** LOOP now signals an error when any variable is reused in the
4180 same loop (including the potentially useful construct analogous
4181 to WITH A = 1 WITH A = (1+ A);
4182 ** IT is only a special loop symbol within the first clause of a
4183 conditional loop clause;
4184 ** LOOP with a typed iteration variable over a hashtable now
4185 signals a type error iff it should.
4186 * fixed some other bugs revealed by Paul Dietz' test suite:
4187 ** FILE-STREAM now names the class previously known as FD-STREAM;
4188 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4189 argument) no longer signals an error;
4190 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4191 of the slot symbol, rather than using the current package
4192 ((:CONC-NAME "") continues to intern the slot's name in the
4194 * incremented fasl file version number, because of the incompatible
4195 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4196 of the new implementation of DEFINE-COMPILER-MACRO.
4198 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4199 * Support for building SBCL for MIPS platforms running in
4200 little-endian mode has now been checked in, and basic
4201 functionality on said platforms verified.
4202 * minor incompatible change: PCL now records the pathname of a file
4203 in which methods and the like are defined, rather than its
4205 * minor incompatible change: TRUENAME now considers the truename of
4206 a file naming a directory to be the pathname with :DIRECTORY
4207 component indicating that directory.
4208 * minor incompatible change: a NAMED clause in the extended form of
4209 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4210 reason for the previous behaviour is unclear.
4211 * more systematization and improvement of CLOS and MOP conformance
4212 in PCL (thanks to Gerd Moellman and Pierre Mai):
4213 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4215 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4216 primary methods with no specializers;
4217 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4219 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4220 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4221 FORWARD-REFERENCED-CLASSes; error reporting on
4222 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4224 ** SXHASH on CLOS instances now uses a slot internal to the
4225 instance to return different numbers on distinct instances,
4226 while preserving the same return value through invocations of
4228 ** DEFMETHOD signals errors when methods with longer incongruent
4229 lambda lists are added to generic functions;
4230 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4231 CLASS, as specified in AMOP;
4232 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4233 on the order returned by the primary method for classes of
4234 class STANDARD-CLASS;
4235 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4236 * fixed some bugs shown by Paul Dietz' test suite:
4237 ** DOLIST puts its body in TAGBODY;
4238 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4240 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4241 value producing form;
4242 ** if more variables are given to PROGV than values, extra
4243 variables are bound and made to have no value;
4244 ** NSUBSTITUTE on list arguments gets the right answer with
4246 ** ELT signals an error of type TYPE-ERROR when the index argument
4247 is not a valid sequence index;
4248 ** LOOP signals (at macroexpansion time) an error of type
4249 PROGRAM-ERROR when duplicate variable names are found;
4250 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4251 ** FUNCALL of special-operators now cause an error of type
4253 ** PSETQ now works as required in the presence of side-effecting
4254 symbol-macro places;
4255 ** NCONC accepts any object as its last argument;
4256 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4258 ** loop-for-as-package does not require a package to be explicitely
4260 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4262 * fixed bug 166: compiler preserves "there is a way to go"
4263 invariant when deleting code.
4264 * fixed bug 172: macro lambda lists with required arguments after
4265 &REST arguments now cause an error to be signalled. (thanks to
4267 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4268 bug. (thanks to Matthew Danish)
4269 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4271 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4272 arguments are lexically rebound. (thanks to Gerd Moellmann and
4274 * fixed bug 194: error messages are now more informative when there
4275 is no primary method applicable in a call to a generic
4276 function. (thanks to Gerd Moellmann)
4277 * fixed bug in command line argument checking (thanks to Julian
4279 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4280 (thanks to Matthew Danish)
4281 * incremented fasl file version number, because of the
4282 SXHASH-related changes in the layout of CLOS data structures
4284 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4285 * minor incompatible change: The runtime (the Unix executable named
4286 "sbcl") is now much pickier about the .core files it will load.
4287 Essentially it now requires .core files to descend from the same
4288 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4289 as the runtime does. (The intent is to prevent the crashes which
4290 can occur, and which can even be reported as mysterious failures,
4291 when people patch the sources or change the build parameters
4292 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4293 sbcl and .core files.)
4294 * fixed bug: VALUES-LIST is no longer optimized away.
4295 * fixed bug 142: The FFI conversion of C string values to Lisp
4296 string values no longer conses excessively. (thanks to Nathan
4297 Froyd porting Raymond Toy's fix to CMU CL)
4298 * began to systematize and improve MOP conformance in PCL (thanks to
4299 Nathan Froyd, Gerd Moellman and Pierre Mai):
4300 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4302 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4303 ** FINALIZE-INHERITANCE is now called on class finalization;
4304 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4305 argument precedence order.
4306 * fixed bug 202: The compiler no longer fails on functions whose
4307 derived types contradict their declared type.
4308 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4309 so it can be non-toplevel.
4310 * The fasl file version number has changed (because of the new
4311 implementation of DEFMACRO).
4312 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4313 safe code, that any length requirement by their type-specifier
4314 argument is valid. The exceptions to this are described in bug
4316 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4317 functions now check the types of their inputs as required by ANSI.
4318 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4319 introduced symbol is DECLAREd to be SPECIAL.
4320 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4321 * fixed bug: :COUNT argument to sequence functions may be negative
4322 * fixed bug: body of DO-SYMBOLS may contain declarations
4323 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4324 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4325 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4326 symbol macro only once
4327 * fixed printing of call frame when argument list is unavailable
4328 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4329 * compiler no longer signals WARNING on unknown keyword
4332 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4333 * A beta-quality port to the mips architecture running Linux,
4334 based on the old CMUCL backend, has been made. It has been tested
4335 on a big-endian kernel, and works sufficiently well to be able to
4336 rebuild itself; it has not been tested in little-endian mode.
4337 * fixed an inconsistency between gencgc.c and purify.c which made
4338 dumping/loading .core files unreliable
4339 * fixed bug 120a: The compiler now deals correctly with IFs where
4340 the consequent is the same as the alternative, instead of
4341 misderiving the return type. (thanks to Alexey Dejneka)
4342 * fixed bug 113: Logical pathnames are now dumpable (the logical
4343 host is resolved at load-time, throwing an error if it is not
4345 * fixed bug 174: FORMAT's error message is slightly clearer when a
4346 non-printing character is used in a format directive.
4347 * fixed several bugs in compiler checking of type declarations, i.e.
4348 violations of the Python "declarations are assertions" principle
4349 (thanks to Alexey Dejneka)
4350 * fixed several bugs in PCL's error checking (thanks to Gerd
4352 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4354 * fixed bug in compilation of functions as first class values
4355 (thanks to Antonio Martinez-Shotton)
4356 * The compiler's handling TYPE-ERRORs which it can prove will
4357 inevitably happen at runtime has been cleaned up and corrected
4358 in several ways. (thanks to Alexey Dejneka)
4359 * improved argument type checking for various basic arithmetic
4360 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4361 lavished on them in the past that they can be compiled in many
4362 ways in different special cases
4363 * fixed bug 181: compiler checks validity of user supplied type
4365 * cleaned up code flushing in optimization: Function calls which
4366 should signal errors for safety purposes (e.g. which ANSI says
4367 should signal errors when their arguments are of incorrect type)
4368 are no longer optimized away.
4369 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4370 * incremented fasl file version number, because changes in the
4371 implementation of sequence functions like COERCE caused
4372 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4373 in old inline expansions) to become undefined. (Actually these
4374 changes were later undone, so we might very well be binary
4375 compatible with 0.7.7 after all, but leaving the version number
4376 incremented seemed like the simplest and most conservative
4379 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4380 * An alpha-quality port to the parisc architecture running Linux,
4381 based on the old CMUCL backend, has been made. This, even more so
4382 than the other backends, should be considered still a work in
4383 progress; known problems include that the Linux kernel in 64-bit
4384 mode does not propagate the correct sigcontext structure to
4385 userspace, and consequently SBCL on a parisc64 kernel will not
4387 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4388 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4389 suppressed.) Also now that the compiler is looking at declarations
4390 in the environment, it checks optimization declarations as well,
4391 and suppresses inlining when (> DEBUG SPEED).
4392 * More fixes have been made to treatment of floating point exception
4393 treatment and other Unix signals. In particular, floating point
4394 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4395 * The detection and handling of control stack exhaustion (infinite
4396 or very deeply nested recursion) has changed. Stack exhaustion
4397 detection is now done by write-protecting pages at the OS level
4398 and applies at all optimization settings; when found, a
4399 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4400 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4401 be caught using IGNORE-ERRORS.
4402 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4403 correctly when transforming recursive LABELS functions to LETs.
4404 (thanks to Alexey Dejneka)
4405 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4406 that are names of constants or global variables.
4407 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4408 alien routines with docstrings.
4409 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4410 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4412 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4413 (thanks to Eric Marsden)
4414 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4415 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4416 * Bug fix: The SPARC backend can now compile functions involving
4417 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4418 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4419 to a functions expecting a PATHNAME-DESIGNATOR.
4420 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4421 lambda lists. (thanks to Alexey Dejneka)
4422 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4423 functions so that EXPORTing the name of the class doesn't cause
4424 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4425 to Antonio Martinez for reporting this)
4426 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4427 constant-folded without failing an assertion. (thanks to Einar
4428 Floystad Dorum for reporting this)
4429 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4430 types are now dealt with more correctly by the compiler.
4431 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4432 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4433 behaviour analogous to RENAME-FILE. This puts its behaviour more
4434 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4436 * The fasl file version number has changed again. (because of the
4437 bug fix involving the names of PCL MAKE-INSTANCE functions)
4439 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4440 * bug fix: Floating point exceptions are treated much more
4441 consistently on the x86/Linux and PPC/Linux platforms.
4442 * Array initialization with :INITIAL-ELEMENT is now much faster for
4443 cases when the compiler cannot open code the array creation, but
4444 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4445 array accesses have also seen a speed increase.
4446 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4447 specified. (This was at the root of some bad interactions between
4448 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4450 * bug fix: Internal error arguments for undefined functions are now
4451 computed correctly on the PPC/Linux platform.
4452 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4453 Raymond Toy's patch for CMU CL)
4454 * Support for the Solaris 9 operating environment has been included
4455 (thanks to Daniel Merritt)
4456 * A very ugly but hopefully complete draft of the missing FFI chapter
4457 of the manual has been created by reformatting the corresponding
4458 CMU CL manual chapter into (currently very ugly and incoherent)
4459 DocBook and bringing it up to date for SBCL behavior. Thus, the
4460 manual is now essentially complete, at least by my extreme
4461 once-and-only-once standards, whereby it's acceptable to refer to
4462 the doc strings of SB-EXT functions as the primary documentation.
4463 * The fasl file version number has changed again, due to cleanup of
4464 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4465 is no longer a static symbol.)
4467 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4468 * SBCL now builds with OpenMCL (version 0.12) as the
4469 cross-compilation host; also, more progress has been made toward
4470 bootstrapping under CLISP.
4471 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4473 * bug 158 fixed: The compiler can now deal with integer loop
4474 increments different from 1; fixing this turned out also to fix
4476 * bug 169 fixed: no more bogus warnings about using lexical bindings
4477 despite the presence of perfectly good SPECIAL declarations (thanks
4478 to David Lichteblau)
4479 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4480 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4481 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4483 * bug 180 fixed: Method combination specifications no longer ignore
4484 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4485 * bug fix: Structure type predicate functions now check their argument
4486 count as they should.
4487 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4488 correctly. (thanks to Pierre Mai)
4489 * minor incompatible change: The --noprogrammer option is deprecated
4490 in favor of the new --disable-debugger option, which is very similar.
4491 (The major difference is that it takes effect at a slightly different
4492 time at startup, causing handling of errors in --sysinit and
4493 --userinit files will be affected differently.) The
4494 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4495 been added to allow this functionality to be controlled from ordinary
4496 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4497 maintainers, who might want to run non-interactive scripts to
4498 build SBCL cores which will later be used interactively.)
4499 * minor incompatible change: The LOAD function no longer, when given
4500 a wild pathname to load, loads all files matching that pathname.
4501 Instead, an error of type FILE-ERROR is signalled.
4503 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4504 * bug 147 fixed: The compiler preserves its block link/count
4505 invariants more correctly now so that it doesn't crash. (thanks
4507 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4509 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4510 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4511 no-value-for-this-character as NIL (as specified by ANSI).
4512 * HOST-NAMESTRING on physical pathnames now returns a string that is
4513 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4514 (thanks to Christophe Rhodes)
4515 * The Alpha port handles icache flushing more correctly. (thanks to
4517 * More progress has been made toward bootstrapping under CLISP. (thanks
4518 to Christophe Rhodes)
4519 * The fasl file format has changed again, because dynamic loading
4520 on OpenBSD (which has non-ELF object files) motivated some cleanups
4521 in the way that foreign symbols are transformed and passed around.
4522 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4523 is no longer treated as whitespace by the reader, but instead as
4524 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
4525 |A
\x7fB|, instead of A as it used to.
4527 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4528 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4529 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4530 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4531 this as of 0.7.1.45, but was left out of the previous news section
4532 (thanks to Dan Barlow)
4533 * SBCL now runs on the Solaris operating system on SPARC architectures
4534 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4535 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4536 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4537 * SPARC backend cleanups, allowing builds of cores optimized for V8
4538 and V9 SPARCS, and also emission of code targeted to a particular
4539 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4541 * SBCL is closer to bootstrapping under CLISP, thanks to various
4542 fixes by Christophe Rhodes.
4543 * The fasl file format has changed again, to allow the compiler's
4544 INFO database to support symbol macros.
4545 * The user manual (in doc/) is formatted into HTML more nicely.
4546 (thanks to coreythomas)
4547 * The system is smarter about SUBTYPEP relationships, especially
4548 those involving NOT types (including types such as ATOM which are
4549 represented internally using NOT types). Thus SUBTYPEP is less
4550 likely to return (VALUES NIL NIL) in general, and in particular
4551 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4553 * The fasl file format has changed again, because the internal
4554 representation of types now includes a new slot to support the new
4555 SUBTYPEP-of-NOT-types logic.
4556 * (not a change in the main branch of SBCL, but a related prototype
4557 which can hopefully be merged into the main branch of SBCL in the
4558 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4559 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4560 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4561 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4562 dispatch macro character combinations. (thanks to Alexey Dejneka)
4563 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4564 that superficially look like logical namestrings correctly.
4565 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4567 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4568 default supplied-p) for &optional and &key arguments. (thanks to
4571 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4572 * incompatible change: The compiler is now less aggressive about
4573 tail call optimization, doing it only when (> SPACE DEBUG) or
4574 (> SPEED DEBUG). (This is an incompatible change because there are
4575 programs which relied on the old CMU-CL-style behavior to optimize
4576 away their unbounded recursion which will now die of stack overflow.)
4577 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4578 for non-GENCGC systems has been increased to 20M (since that
4579 seems much closer to the likely performance optimum for modern
4580 systems than the old 4M value was)
4581 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4582 and *DEBUG-PRINT-LEVEL*
4583 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4584 of CMU CL's support for SPARC, and various endianness and other
4585 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4586 * new syntactic sugar for the Unix command line: --load foo.bar is now
4587 an alternate notation for --eval '(load "foo.bar")'.
4589 ** The system now detects stack overflow and handles it gracefully,
4590 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4591 optimization settings. (This is a good thing in general, and
4592 its introduction in this version should be particularly timely
4593 for anyone whose code fails because of suppression of tail
4595 ** The system now hunts for the C variable "environ" in a more
4596 devious way, to avoid segfaults when the C library version differs
4597 between compile time and run time. (thanks to Christophe Rhodes)
4598 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4599 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4600 ** The compiler no longer issues bogus style warnings for undefined
4601 classes in the same source file as the DEFCLASSes which defined
4602 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4604 ** fixes in CONDITION class precedence list for undefined function
4605 errors (thanks to Alexei Dejneka)
4606 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4607 correctly. (thanks to Dan Barlow)
4608 ** portability fixes aiming at bootstrapping under CLISP (thanks
4609 to Dave McDonald and Christophe Rhodes)
4610 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4611 ** fixes in type translation and and type inference (thanks to
4613 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4614 ** various fixes in the new ports (thanks to Dan Barlow)
4615 * several changes related to debugging:
4616 ** suppression of tail recursion, as noted above
4617 ** stack overflow detection, as noted above
4618 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4619 is now the default. (For some time encapsulation has been more
4620 reliable than the breakpoint-based :ENCAPSULATE NIL
4621 implementation, at least on X86 systems; and I just noticed that
4622 encapsulation also seems closer to the spirit of the ANSI
4625 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4627 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4628 up properly again. (There was a packaging bug in 0.7.0 which
4629 left their definitions in SB-SYS::LOAD-FOREIGN and
4630 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4631 vital for most things which interface to C-level interfaces,
4632 like extensions working with sockets or databases or
4633 Perl-compatible regexes or whatever, and the need to fix
4634 this bug is the main reason that 0.7.1 was released so
4636 ** DEFGENERIC is now choosier about the methods it redefines, so that
4637 reLOADing a previously-LOADed file containing DEFGENERICs does
4638 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4639 cycle now works as it should. (thanks to Alexey Dejneka)
4640 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4641 fixed by Christophe Rhodes. (He actually submitted this patch
4642 months ago, and I delayed until after 0.7.0.)
4643 ** Bug 111 (internal compiler confusion about runtime checks on
4644 FUNCTION types) was fixed by Alexey Dejneka.
4645 * Some internal cleanups (getting rid of variables which aren't
4646 needed now that the byte interpreter is gone) caused the fasl
4647 file format number to change again.
4649 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4650 * major incompatible change: The default fasl file extension, i.e. the
4651 default extension for files produced by COMPILE-FILE, has changed
4652 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4654 ** There are many changes in the implementation of the compiler.
4655 SBCL is now essentially a compiler-only implementation of ANSI
4656 Common Lisp. EVAL still "interprets" a few special cases, but
4657 almost all the interesting cases are handled by creating
4658 a LAMBDA expression, calling COMPILE on it, then calling
4659 FUNCALL on the result.
4660 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4661 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4662 Since the code is newer, there might still be some new bugs
4663 (though not as many as before Martin Atzmueller's fixes:-). But
4664 the new code is substantially simpler and clearer, and hopefully
4665 any remaining bugs will be simpler, less fundamental, and more
4666 fixable then the bugs in the old code.
4667 ** The revised compiler is still a little unsteady on its feet.
4669 *** The debugging information it produces (particularly the names
4670 of FUNCTION objects) is sometimes much less useful than what
4671 the old compiler produced.
4672 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4673 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4674 within a MACROLET) has been temporarily weakened.
4675 ** There are new compiler optimizations for various functions:
4676 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4677 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4678 *** the math functions TRUNCATE, FLOOR, and CEILING
4679 *** the function-of-all-trades COERCE
4680 Mostly these should be transparent, but there's one
4681 potentially-annoying problem (bug 117): when the compiler
4682 inline-expands a function and does type analysis on the result,
4683 it can create control paths which have type mismatches, and
4684 when it can't prove that those control paths aren't taken,
4685 it will issue WARNINGs about the type mismatches. This is
4686 a particular problem in practice for the new sequence functions.
4687 It's not clear how this should be fixed, and for now, a
4688 workaround is given in the entry for 117 in the BUGS file.
4689 ** (Because of the interaction between the two previous items --
4690 occasional inlining problems and new inline expansions -- some
4691 of the new sequence function optimizations won't really kick in
4692 completely until debugging information, and then inlining, are
4693 straightened out in some future version.)
4694 * minor incompatible changes:
4695 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4696 DIRECTORY no longer implicitly promotes NIL slots of its
4697 pathname argument to :WILD. In particular, when you ask for the
4698 contents of a directory (which you used to be able to do without
4699 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4700 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4701 ** changes in behavior that ANSI explicitly defines to be
4702 implementation dependent:
4703 *** The new compiler-only implementation still conforms with ANSI,
4704 but acts a little different than before. Besides the obvious
4705 changes in performance tradeoffs (that the cost per form passed
4706 to EVAL has gone up, and the cost per form executed by EVAL
4707 has gone down), the behavior of the system changes a little
4708 because there are no longer any interpreted function objects.
4709 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4710 e.g. doing COMPILE on the output of interactive DEFUN is
4712 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4714 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4715 has changed from (:CL) to NIL.
4716 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4717 e.g. #\Newline and #\Tab, don't have names specified in the
4718 ANSI Common Lisp standard, is now based on their ASCII symbolic
4719 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4720 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4721 are no longer used for output.
4722 ** changes in internal implementation constants:
4723 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4724 4 million. (If your application spends a lot of time GCing and
4725 you have a lot of RAM, you might want to experiment with
4726 increasing it even more.)
4727 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4728 However, almost all old code should still continue to work without
4729 immediate update, as SB-C-CALL is now a (deprecated) nickname
4731 ** Old operator names in the style DEF-FOO are now deprecated in
4732 favor of new corresponding names DEFINE-FOO, for consistency with
4733 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4734 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4735 internal symbols, but a few supported extensions like
4736 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4737 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4738 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4739 etc. as you get deeper into recursive calls to the debugger
4740 command loop, instead of the old "5]", "5]]", "5]]]"
4741 sequence. (I was motivated to do this when squabbles between
4742 ILISP and SBCL left me very deeply nested in the debugger. In the
4743 short term, this change will probably provoke more ILISP/SBCL
4744 squabbles, but hopefully it will be an improvement in the long run.)
4745 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4746 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4747 function, since declaiming return types involving aliens is
4748 (1) annoyingly messy to do by hand and (2) vital to efficient
4749 compilation of code which calls such functions.
4750 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4751 longer reexported by the SB-EXT package. They're solely useful
4752 for alien code, so it seems more logical that you should get
4753 them from the SB-ALIEN package, not in SB-EXT.
4754 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4755 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4756 features. Instead, the code that they used to control is always
4757 built into the system.
4758 * many other bug fixes
4759 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4760 advantage of the new EVAL-WHEN stuff and to clean them up in
4761 general, and they are now more ANSI-compliant in a number of
4762 ways. Martin Atzmueller is responsible for a lot of this.
4763 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4765 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4766 *** correct ERROR type for various file operations
4767 *** some fixes for Lisp streams
4768 *** DEFMETHOD syntax checking
4769 *** changing old weird representation of debug information as
4770 strings (which, among their other deficiencies, don't transform
4771 correctly when you rename packages, and don't change their
4772 print representation when you change things like *PACKAGE*
4773 and *PRINT-LENGTH*) to symbols and lists of symbols
4774 He also made several improvements and fixed several bugs in DESCRIBE.
4775 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4777 *** misbehavior of WRITE-STRING/WRITE-LINE
4778 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4779 and several other LOOP problems as well
4780 *** DIRECTORY when similar filenames are present
4781 *** DEFGENERIC with :METHOD options
4782 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4783 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4784 *** argument ordering in FIND with :TEST option
4785 *** mishandled package designator argument in APROPOS-LIST
4786 *** various problems in the backquote readmacro
4787 *** a bug in APROPOS
4788 *** probably some others that I'm not describing very well here,
4789 since the CVS log documents them by reference to sbcl-devel
4790 messages, and the SourceForge archives aren't working well.:-(
4791 ** Dan Barlow improved the Alpha port (and is making progress on the
4792 PPC port, for those of you who think different).
4793 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4794 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4795 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4796 continues to work on the SPARC port (for those of you in a position
4797 to look down upon our little PC-compatible boxes from a great height).
4798 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4799 and uses that copy, rather than the current dynamic value, when
4800 it's trying to decide whether to truncate output. Thus e.g.
4801 (let ((*print-lines* 50))
4802 (pprint-logical-block (stream nil)
4804 (let ((*print-lines* 8))
4805 (print (aref possiblybigthings i) stream)))))
4806 should now truncate the logical block only at 50 lines, instead of
4807 often truncating it at 8 lines, as it did before.
4808 * The doc/cmucl/ directory, containing old CMU CL documentation
4809 from the time of the fork, is no longer part of the base system.
4810 SourceForge has shut down its anonymous FTP service, and with it
4811 my original plan for distributing the old CMU CL documentation
4812 there. For now, if you need these files you can download an old
4813 SBCL source release and extract them from it.
4814 * The fasl file version number changed again, for dozens of reasons,
4815 some of which are apparent above.
4817 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4818 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4819 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4820 patch, so that DISASSEMBLE output is much nicer.
4821 * The code in the SB-PROFILE package now seems reasonably stable.
4822 I still haven't decided what the final interface should look like
4823 (I'd like PROFILE to interact cleanly with TRACE, since both
4824 facilities use function encapsulation) but if you have a need
4825 for profiling now, you can probably use it successfully with
4826 the current CMU-CL-style interface.
4827 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4828 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4829 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4830 link now returns the dangling link itself, and for similar
4831 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4832 link itself. (In these cases the old code signalled an error and
4833 looped endlessly, respectively.) Thus, DIRECTORY now works even
4834 in the presence of dangling and cyclic symbolic links.
4835 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4836 is now a supported extension again, since the consensus on
4837 sbcl-devel was that it can be useful for ordinary development
4838 work, not just for debugging SBCL itself.
4839 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4840 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4841 that currently-defined functions might be redefined later with
4842 different return types.
4843 * Hash tables can be printed readably, as inspired by CMU CL code
4844 of Eric Marsden and SBCL code of Martin Atzmueller.
4845 * better error handling in CLOS method combination, thanks to
4846 Martin Atzmueller porting Pierre Mai's CMU CL patches
4847 * more overflow fixes for >16Mbyte I/O buffers
4848 * A bug in READ has been fixed, so that now a single Ctrl-D
4849 character suffices to cause end-of-file on character streams.
4850 In particular, now you only need one Ctrl-D at the command
4851 line (not two) to exit SBCL.
4852 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4854 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4855 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4856 does the right thing.
4857 * The implementation of some type tests, especially for CONDITION
4858 types, is now tidier and maybe faster, due to CMU CL code
4859 originally by Douglas Crosher, ported by Martin Atzmueller.
4860 * Some math functions have been fixed, and there are new
4861 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4862 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4863 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4864 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4865 likely to be built into sbcl-0.7.0.)
4866 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4867 CL, ported to SBCL by Martin Atzmueller)
4868 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4869 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4870 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4871 * There's a new slam.sh hack to shorten the edit/compile/debug
4872 cycle for low-level changes to SBCL itself, and a new
4873 :SB-AFTER-XC-CORE target feature to control the generation of
4874 the after-xc.core file needed by slam.sh.
4875 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4876 COMPILE-FILE is no longer supported, so that now every function
4877 gets an entry point, so that block compilation looks a little
4878 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4879 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4880 returns the number of bytes consed since the system started,
4881 rather than the number consed since the first time the function
4882 was called. (The new definition parallels ANSI functions like
4883 CL:GET-INTERNAL-RUN-TIME.)
4884 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4885 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4886 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4887 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4888 * Fasl file version numbers are now independent of the target CPU,
4889 since historically most system changes which required version
4890 number changes have affected all CPUs equally. Similarly,
4891 the byte fasl file version is now equal to the ordinary
4894 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4895 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4896 is no longer recognized. I apologize for this, because it was
4897 listed in SB-EXT as a supported extension, but I found that
4898 its existing behavior was poorly specified, as well as incorrectly
4899 specified, and it looked like too much of a mess to straighten it
4900 out. I have enough on my hands trying to get ANSI stuff to work..
4901 * many patches ported from CMU CL by Martin Atzmueller, with
4902 half a dozen bug fixes in pretty-printing and the debugger, and
4903 half a dozen others elsewhere
4904 * fixed bug 13: Floating point infinities are now supported again.
4905 They might still be a little bit flaky, but thanks to bug reports
4906 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4907 as flaky as they were.
4908 * The --noprogrammer command line option is now supported. (Its
4909 behavior is slightly different in detail from what the old man
4910 page claimed it would do, but it's still appropriate under the
4911 same circumstances that the man page talks about.)
4912 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4913 are now supported, and enabled by default. Thus, the compiler can
4914 handle many floating point and complex operations much less
4915 inefficiently. (Thus e.g. you can implement a complex FFT
4917 * The compiler now detects type mismatches between DECLAIM FTYPE
4918 and DEFUN better, and implements CHECK-TYPE more correctly, and
4919 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4920 thanks to patches from Martin Atzmueller.
4921 * various fixes to make the cross-compiler more portable to
4922 ANSI-conforming-but-different cross-compilation hosts (notably
4923 Lispworks for Windows, following bug reports from Arthur Lemmens)
4924 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4925 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4926 fixed thanks to Pierre Mai's CMU CL patches.
4927 * fixes to keep the system from overflowing internal counters when
4928 it tries to use i/o buffers larger than 16M bytes
4929 * fixed bug 45a: Various internal functions required to support
4930 complex special functions have been merged from CMU CL sources.
4931 (When I was first setting up SBCL, I misunderstood a compile-time
4932 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4933 * improved support for type intersection and union, fixing bug 12
4934 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4935 more obscure bugs as well
4936 * some steps toward byte-compiling non-performance-critical
4937 parts of the system, courtesy of patches from Martin Atzmueller
4938 * Christophe Rhodes has made some debian packages of sbcl at
4939 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4940 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4941 stable, but are nonetheless usable. When he's ready, I'd be happy
4942 to add them to the SourceForge "File Releases" section. (And if
4943 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4944 * new fasl file format version number (because of changes in
4945 internal representation of (OR ..) types to accommodate the new
4946 support for (AND ..) types, among other things)
4948 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4949 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4951 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4953 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4954 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4955 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4956 * DESCRIBE now works on structure objects again.
4957 * Most function call argument type mismatches are now handled as
4958 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4959 know whether the function will be redefined before the call is
4960 executed. (The compiler could flag local calls with full WARNINGs,
4961 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4962 it doesn't keep track of enough information to know whether calls
4963 are local in this sense.)
4964 * Compiler output is now more verbose, with messages truncated
4965 later than before. (There should be some supported way for users
4966 to override the default verbosity, but I haven't decided how to
4967 provide it yet, so this behavior is still controlled by the internal
4968 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4969 src/compiler/ir1util.lisp.)
4970 * Fasl file format version numbers have increased again, because
4971 support for the Gray streams extension changes the layout of the
4972 system's STREAM objects.
4973 * The Gray subclassable streams extension now works, thanks to a
4974 patch from Martin Atzmueller.
4975 * The full LOAD-FOREIGN extension (not just the primitive
4976 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4977 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4978 but like most other programs, it defaults to copying the Unix
4979 environment from the original process instead of starting the
4980 new process in an empty environment.
4981 * Extensions which manipulate the Unix environment now support
4982 an :ENVIRONMENT keyword option which doesn't smash case or
4983 do other bad things. The CMU-CL-style :ENV option is retained
4984 for porting convenience.
4985 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4986 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4988 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4990 * A patch from Martin Atzmueller seems to have solved the SIGINT
4991 problem, and as far as we know, signal-handling now works cleanly.
4992 (If you find any new bugs, please report them!)
4993 * The system no longer defaults Lisp source file names to types
4994 ".l", ".cl", or ".lsp", but only to ".lisp".
4995 * The compiler no longer uses special default file extensions for
4996 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4997 seems to expect a single default extension for all compiled code,
4998 and there's no compelling reason to try to stretch the standard
4999 to allow two different extensions.) Instead, byte-compiled files
5000 default to the same extension as native-compiled files.
5001 * Fasl file format version numbers have increased again, because
5002 a rearrangement of internal implementation packages made some
5003 dumped symbols in old fasl files unreadable in new cores.
5004 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5005 many fewer weird special cases.
5006 * Bug #17 (differing COMPILE-FILE behavior between logical and
5007 physical pathnames) has been fixed, and some related misbehavior too,
5008 thanks to a patch from Martin Atzmueller.
5009 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5010 by Tim Moore, ported to SBCL by Martin Atzmueller.
5011 * Martin Atzmueller fixed several filesystem-related problems,
5012 including bug #36, in part by porting CMU CL patches, which were
5013 written in part by Paul Werkowski.
5014 * More compiler warnings in src/runtime/ are gone, thanks to
5015 more patches from Martin Atzmueller.
5016 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5019 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5021 * DESCRIBE now works on CONDITION objects.
5022 * The debugger now handles errors which arise when trying to print
5023 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5025 * The build system now uses an additional file, customize-target-features.lisp,
5026 to allow local modifications to the target *FEATURES* list. (The point of
5027 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5028 debugging features enabled, without having to worry about propagating it
5029 into everyone's system when I do a "cvs update".) When no
5030 customize-target-features.lisp file exists, the target *FEATURES* list
5031 should be constructed the same way as before.
5032 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5033 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5034 warn about behavior which is undefined under the ANSI spec. Note: This
5035 is specified by ANSI, but it's not very popular with programmers.
5036 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5037 macro in the SBCL sources for an example of a workaround which you
5038 might use to make portable ANSI-standard code which does what you want.
5039 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5040 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5041 when it's used as a non-toplevel form. (This is required in order
5042 to implement the DEFCONSTANT-EQX macro.)
5043 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5044 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5045 funny things, due to bugs in the implementation of EVAL-WHEN
5046 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5047 non-toplevel DEFCONSTANTs are uncommon.)
5048 * The core file version number and fasl file version number have been
5049 incremented, because the old noncompliant DEFCONSTANT behavior involved
5050 calling functions which no longer exist, and because I also took the
5051 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5052 * fixed bug 1 (error handling before read-eval-print loop starts), and
5053 redid debugger restarts and related debugger commands somewhat while
5055 ** The QUIT debugger command is gone, since it did something
5056 rather different than the SB-EXT:QUIT command, and since it never
5057 worked properly outside the main toplevel read/eval/print loop.
5058 Invoking the new TOPLEVEL restart provides the same functionality.
5059 ** The GO debugger command is also gone, since you can just invoke
5060 the CONTINUE restart directly instead.
5061 ** The TOP debugger command is also gone, since it's redundant with the
5062 FRAME 0 command, and since it interfered with abbreviations for the
5064 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5066 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5067 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5068 some porting work by Martin Atzmueller)
5069 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5070 with a boatload of patches which he ported to SBCL. Now that those
5072 ** The system tries to make sure that its low-priority messages
5073 are prefixed by semicolons, to help people who like to use
5074 syntax highlighting in their ILISP buffer. (This patch
5075 was originally due to Raymond Toy.)
5076 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5077 patches originally written by Raymond Toy.
5078 ** The compiler understands coercion between single-value and
5079 multiple-VALUES type expressions better, getting rid of some very
5080 weird behavior, thanks to patches originally by Robert MacLachlan
5081 and Douglas Crosher.
5082 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5083 lambda lists, thanks to a patch originally by Pierre Mai.
5084 ** The system no longer bogusly warns about "abbreviated type
5086 ** The compiler gets less confused by inlining and RETURN-FROM,
5087 thanks to some patches originally by Tim Moore.
5088 ** The system no longer hangs when dumping circular lists to fasl
5089 files, thanks to a patch originally from Douglas Crosher.
5090 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5091 undefined function error.
5092 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5093 in structure slot initforms) for now, documented workaround instead:-|
5094 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5095 * fixed bug 5: added stubs for various Gray stream functions called
5096 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5097 installed, at least appropriate type errors are generated
5098 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5099 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5100 consistently in DEFMETHOD forms.
5101 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5102 it doesn't seem to affect SBCL after all
5103 * The C runtime system now builds with better optimization and many
5104 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5106 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5108 * The system is now under CVS at SourceForge (instead of the
5109 CVS repository on my home machine).
5110 * The new signal handling code has been tweaked to treat register
5111 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5112 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5113 downstream, e.g. in debug-int.lisp, has implicit dependencies
5114 on the unsignedness of integer representation of machine words,
5115 and that caused the system to bomb out with infinite regress
5116 when trying to recover from type errors involving signed values,
5117 e.g. (BUTLAST '(1 2 3) -1).)
5118 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5119 (This was one of the bugs Peter Van Eynde reported back in July.)
5120 * The system now uses code inspired by Colin Walters' O(N)
5121 implementation of MAP (from the cmucl-imp@cons.org mailing
5122 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5123 inline the MAP operation, and there is more than one
5124 sequence argument to the MAP call (so that it can't just
5125 do ETYPECASE once and for all based on the type of the
5126 single sequence argument). (The old non-inline implementation
5127 of the general M-argument sequence-of-length-N case required
5128 O(M*N*N) time when any of the sequence arguments were LISTs.)
5129 * The QUIT :UNIX-CODE keyword argument has been renamed to
5130 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5131 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5133 * Raymond Wiker's patches to port dynamic loading from Linux to
5134 FreeBSD have been added.
5135 * The BUGS file is now more nearly up to date, thanks in large part
5136 to Martin Atzmueller's review of it.
5137 * The debugger now flushes standard output streams before it begins
5138 its output ("debugger invoked" and so forth).
5139 * The core version number and fasl file version number have both
5140 been incremented, because of incompatible changes in the layout
5142 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5143 used to not be called for a saved Lisp image.)
5144 * Martin Atzmueller's version of a patch to fix a compiler crash,
5145 as posted on sbcl-devel 13 September 2000, has been installed.
5146 * Instead of installing Martin Atzmueller's patch for the
5147 compiler transform for SUBSEQ, I deleted the compiler transform,
5148 and transforms for some similar consing operations.
5149 * A bug in signal handling which kept TRACE from working on OpenBSD
5151 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5152 away by constant folding
5153 * The system now defines its address space constants in one place
5154 (in the Lisp sources), and propagates them automatically elsewhere
5155 (through GENESIS and the sbcl.h file). Therefore, patching the
5156 address map is less unnecessarily tedious and error-prone. The
5157 Lisp names of address space constants have also been systematized.
5158 * CVS tags like dollar-Header-dollar have been removed from
5159 the sources, because they have never saved me trouble and
5160 they've been source of trouble working with patches and other
5161 diff-related operations.
5162 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5163 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5165 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5167 * The system has been ported to OpenBSD.
5168 * The system now compiles with a simple "sh make.sh" on the systems
5169 that it's supported on. I.e., now you no longer need to tweak
5170 text in the target-features.lisp-expr and symlinks in src/runtime/
5171 by hand, the make.sh takes care of it for you.
5172 * The system is no longer so grossly inefficient when compiling code
5173 involving vectors implemented as general (not simple) vectors (VECTOR T),
5174 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5175 which dares to use the various sequence functions on non-simple
5176 vectors, takes less of a performance hit.
5177 * There is now a primitive type predicate VECTOR-T-P
5178 to test for the (VECTOR T) type, so that e.g.
5179 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5180 can now be compiled with some semblance of efficiency. (The old code
5181 turned the type declaration into a full call to %TYPEP at runtime!)
5182 * AREF on (VECTOR T) is still not fast, since it's still compiled
5183 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5184 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5185 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5186 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5187 without making full calls to SUBTYPEP at runtime.
5188 (Some analogous efficiency issues for non-simple vectors specialized to
5189 element types other than T, or for non-simple multidimensional arrays,
5190 have not been addressed. They could almost certainly be handled the
5191 same way if anyone is motivated to do so.)
5192 * The changes in array handling break binary compatibility, so
5193 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5194 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5195 instead of (VALUES T T).
5196 * By following the instructions that Dan Barlow posted to sbcl-devel
5197 on 2 July 2000, I was able to enable primitive dynamic object
5198 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5199 functionality is not implemented (since it calls ld to resolve
5200 library references automatically, requiring RUN-PROGRAM for its
5201 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5202 try to resolve library references) is now supported.
5203 * The system now flushes the standard output streams when it terminates,
5204 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5205 them at several other probably-convenient times, e.g. in each pass of
5206 the toplevel read-eval-print loop, and after evaluating a form given
5207 as an "--eval" command-line option. (These changes were motivated by a
5208 discussion of stream flushing issues on cmucl-imp in August 2000.)
5209 * The source transform for TYPEP of array types no longer assumes
5210 that an array whose element type is a not-yet-defined type
5211 is implemented as an array of T, but instead punts, so that the
5212 type will be interpreted at runtime.
5213 * There is now some support for cross-compiling in make.sh: each of
5214 the phases of make.sh has its own script. (This should be transparent
5215 to people doing ordinary, non-cross-compile builds.)
5216 * Since my laptop doesn't have hundreds of megabytes of memory like
5217 my desktop machine, I became more motivated to do some items on
5218 my to-do list in order to reduce the size of the system a little:
5219 ** Arrange for various needed-only-at-cold-init things to be
5220 uninterned after cold init. To support this, those things have
5221 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5222 symbols with such names are now uninterned after cold init).
5223 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5224 fasl files for cold load.
5225 ** Remove the old compiler structure pooling code (which used to
5226 be conditional on the target feature :SB-ALLOC) completely.
5227 ** Redo the representation of some data in cold init to be more compact.
5228 (I also looked into supporting byte compiled code at bootstrap time,
5229 which would probably reduce the size of the system a lot, but that
5230 looked too complicated, so I punted for now.)
5231 * The maximum signal nesting depth in the src/runtime/ support code has
5232 been reduced from 4096 to 256. (I don't know any reason for the very
5233 large old value. If the new smaller value turns out to break something,
5234 I'll probably just bump it back up.)
5235 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5237 * Many, many bugs reported by Peter Van Eynde have been added to
5238 the BUGS list; some have even been fixed.
5239 * While enabling dynamic object file loading, I tried to make the
5240 code easier to understand, renaming various functions and variables
5241 with less ambiguous names, and changing some function calling
5242 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5243 * While trying to figure out how to do the OpenBSD port, I tried to
5244 clean up some of the code in src/runtime/. In particular, I dropped
5245 support for non-POSIX signal handling, added various comments,
5246 tweaked the code to reduce the number of compilation warnings, and
5247 renamed some files to increase consistency.
5248 * To support the new automatic configuration functionality in make.sh,
5249 the source file target-features.lisp-expr has been replaced with the
5250 source file base-target-features.lisp-expr and the machine-generated
5251 file local-target-features.lisp-expr.
5252 * fixed a stupid quoting error in make.sh so that using CMU CL
5253 "lisp -batch" as cross-compilation host works again
5255 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5257 * DESCRIBE no longer tries to call itself recursively to describe
5258 bound/fbound values, so that it no longer fails on symbols which are
5259 bound to themselves (like keywords, T, and NIL).
5260 * DESCRIBE now works on generic functions.
5261 * The printer now prints less-screwed-up representations of closures
5262 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5263 * A private symbol is used instead of the :EMPTY keyword previously
5264 used to mark empty slots in hash tables. Thus
5265 (DEFVAR *HT* (MAKE-HASH-TABLE))
5266 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5267 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5268 now does what ANSI says that it should. (You can still get
5269 similar noncompliant behavior if bang on the hash table
5270 implementation with all the symbols you get back from
5271 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5272 This breaks binary compatibility, since tests for equality to
5273 :EMPTY are wired into things like the macroexpansion of
5274 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5276 * There's now a minimal placeholder implementation for CL:STEP,
5277 as required by ANSI.
5278 * An obscure bug in the interaction of the normal compiler, the byte
5279 compiler, inlining, and structure predicates has been patched
5280 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5281 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5283 * Missing ordinary arguments in a macro call are now detected even
5284 when the macro lambda list contains &KEY or &REST.
5285 * The debugger no longer complains about encountering the top of the
5286 stack when you type "FRAME 0" to explicitly instruct it to go to
5287 the top of the stack. And it now prints the frame you request even
5288 if it's the current frame (instead of saying "You are here.").
5289 * As specified by ANSI, the system now always prints keywords
5290 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5292 * The default initial SIZE of HASH-TABLEs is now smaller.
5293 * Type information from CLOS class dispatch is now propagated
5294 into DEFMETHOD bodies, so that e.g.
5295 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5297 is now basically equivalent to
5298 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5299 (DECLARE (TYPE SINGLE-FLOAT X))
5301 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5302 operation, without having to do run-time type dispatch.
5303 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5304 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5305 * Since I don't seem to be making big file reorganizations very often
5306 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5307 is overflowing my ability to conveniently back them up), I've finally
5308 checked the system into CVS. (The CVS repository is on my home system,
5309 not at SourceForge -- putting it on SourceForge might come later.)
5310 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5311 high-level GC-NOTIFY-FOO functions send their output. (There's
5312 still very little control of where low-level verbose GC functions
5313 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5314 less than it used to -- the GC-NOTIFY-FOO functions are now under
5315 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5316 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5317 in only one place in the source code, and propagates it automatically
5318 everywhere that it's needed. Thus e.g. when I bump the version from
5319 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5320 * The C source files now include boilerplate legalese and documentation
5321 at the head of each file (just as the Lisp source files already did).
5322 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5323 to his page will be replaced with a link to his new CLiki service.
5325 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5327 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5328 * The build process now looks for GNU make under the default name "gmake",
5329 instead of "make" as it used to. If GNU make is not available as "gmake"
5330 on your system, you can change this default behavior by setting the
5331 GNUMAKE environment variable.
5332 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5333 can build without error under CMU CL.
5335 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5337 * There is now a partial SBCL user manual (with some new text and some
5338 text cribbed from the CMU CL manual).
5339 * The beginnings of a profiler have been added (starting with the
5340 CMU CL profiler and simplifying and cleaning up). Eventually the
5341 main interface should be through the TRACE macro, but for now,
5342 it's still accessed through vaguely CMU-CL-style functions and macros
5343 exported from the package SB-PROFILE.
5344 * Some problems left over from porting CMU CL to the new
5345 cross-compilation bootstrap process have been cleaned up:
5346 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5347 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5348 part when getting rid of the compiler *BACKEND* stuff.)
5349 ** The value of *NULL-TYPE* was screwed up, because it was
5350 being initialized before the type system knew the final
5351 definition of the 'NULL type. This screwed up several key
5352 optimizations in the compiler, causing inefficiency in all sorts
5353 of places. (I found it because I wanted to understand why
5354 GET-INTERNAL-RUN-TIME was consing.)
5355 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5356 PROCLAIM FTYPE information. Unfortunately this broke binary
5357 compatibility again, since now the forms output by DEFGENERIC
5358 to refer to functions which didn't exist in 0.6.3.
5359 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5360 can use the new (as of 0.6.3) transform for SOME into MAP into
5362 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5363 values to (INTEGER 0 1000000), so that the time code will no longer
5364 occasionally get blown up by Linux returning 1000000 microseconds
5365 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5366 its output conform to the ANSI spec. (Alas, this makes its output
5367 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5368 * A full call to MAP NIL with a single sequence argument no longer conses.
5369 * fixes to problems pointed out by Martin Atzmueller:
5370 * The manual page no longer talks about multiprocessing as though
5371 it were currently supported.
5372 * The ILISP support patches have been removed from the distribution,
5373 because as of version 5.10.1, ILISP now supports SBCL without us
5374 having to maintain patches.
5375 * added a modified version of Raymond Toy's recent CMU CL patch for
5376 EQUALP comparison of HASH-TABLE
5378 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5380 * The system still can't cross-compile itself with
5381 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5382 entails), but at least it can compile more of itself that way
5383 than it used to be able to, and various buglets which were uncovered
5384 by trying to cross-compile itself that way have now been fixed.
5385 * This release breaks binary compatibility again. This time
5386 at least I've incremented the FASL file format version to 2, so that the
5387 problem can be detected reliably instead of just causing weird errors.
5388 * various new style warnings:
5389 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5390 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5391 ** using the lexical binding of a variable named in the *FOO* style
5392 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5393 as specified by ANSI.
5394 * *RANDOM-STATE* is no longer automatically initialized from
5395 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5396 default behavior of the system is to repeat its behavior every time
5397 it's run. If you'd like to change this behavior, you can always
5398 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5399 old convention there was no comparably easy way to get the system to
5400 repeat its behavior every time it was run.
5401 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5402 FTYPE declarations has been removed, in favor of their ANSI
5403 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5404 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5405 the types of their sequence arguments can be determined at compile time.
5406 This is done through a new open code expansion for MAP which eliminates
5407 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5408 argument types can be determined at compile time.
5409 * The optimizer now transforms COERCE into an identity operation when it
5410 can prove that the coerced object is already of the correct type. (This
5411 can be a win for machine generated code, including the output of other
5412 optimization transforms, such as the MAP transform above.)
5413 * Credit information has been moved from source file headers into CREDITS.
5414 * Source file headers have been made more standard.
5415 * The CASE macro now compiles without complaining even when it has
5418 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5420 * (Note that the way that the PCL macroexpansions were rewritten
5421 to accommodate the change in DEFGENERIC below breaks binary
5422 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5423 not run under sbcl-0.6.2. Once we get out of alpha releases,
5424 i.e. hit release 1.0.0, we'll probably try to maintain binary
5425 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5426 and sbcl-1.4.4. Until then, however, it might be fairly common
5427 for maintenance releases to break binary compatibility.)
5428 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5430 * The reporting of unhandled signals has been changed to print some
5431 explanatory text as well as the report form. (Previously only
5432 the report form was printed.)
5433 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5434 it defines, so that the compiler no longer issues undefined function
5435 warnings for compiled-but-not-yet-loaded generic functions.
5436 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5437 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5438 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5439 section of the ANSI spec are supported.
5440 * The "" nickname for the "KEYWORD" package has been removed.
5441 The reader still handles symbol tokens which begin with a package marker
5442 as keywords, but it doesn't expose its mechanism for doing so in the
5443 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5444 * The system now issues STYLE-WARNINGs for contradictory TYPE
5445 proclamations. (Warnings for contradictory FTYPE proclamations would
5446 be nice too, but those can't be done usefully unless the type system
5447 is made smarter about FUNCTION types.)
5448 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5449 systematized, so that "*target-*.lisp is supposed to exist only on the
5450 target and imply that there's a related file which exists on the
5451 host, and *host-*.lisp is supposed to exist only on the host and imply
5452 that there's a related file which exists on the target. This involves a
5453 lot of renaming. Hopefully the acute confusion caused by the renaming
5454 will be justified by the reduction in chronic confusion..
5455 ** runtime-type.lisp -> early-target-type.lisp
5456 ** target-type.lisp -> late-target-type.lisp
5457 ** early-host-format.lisp -> early-format.lisp
5458 ** late-host-format.lisp -> late-format.lisp
5459 ** host-error.lisp -> misc-error.lisp
5460 ** early-error.lisp -> early-target-error.lisp
5461 ** late-error.lisp -> late-target-error.lisp
5462 ** host-defboot.lisp -> early-defboot.lisp
5463 ** code/misc.lisp -> code/target-misc.lisp
5464 ** code/host-misc.lisp -> code/misc.lisp
5465 ** code/numbers.lisp -> code/target-numbers.lisp
5466 ** code/early-numbers.lisp -> numbers.lisp
5467 ** early-host-type.lisp -> early-type.lisp
5468 ** late-host-type.lisp -> late-type.lisp
5469 ** host-typep.lisp -> typep.lisp
5470 ** load.lisp -> target-load.lisp
5471 ** host-load.lisp -> load.lisp
5472 ** host-disassem.lisp -> disassem.lisp
5473 ** host-insts.lisp -> insts.lisp
5474 ** byte-comp.lisp -> target-byte-comp.lisp
5475 ** host-byte-comp.lisp -> byte-comp.lisp
5476 ** host-signal.lisp -> signal.lisp
5477 ** host-defstruct.lisp -> defstruct.lisp
5478 ** late-target-type.lisp -> deftypes-for-target.lisp
5479 Furthermore, several other previously target-only files foo.lisp (e.g.
5480 hash-table.lisp and random.lisp) have been split into a target-and-host
5481 foo.lisp file and a target-only target-foo.lisp file, with their key type
5482 definitions in the target-and-host part, so that the cross-compiler will
5483 know more about target types.
5484 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5485 gone away. In their place are various *BACKEND-FOO* variables
5486 corresponding to the slots of the old structure.
5487 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5488 into the target SBCL has been fixed.
5489 * The chill.lisp system for loading cold code into a running SBCL
5491 * Support for the CMU CL "scavenger hook" extension has been removed.
5492 (It was undocumented and unused in the CMU CL sources that SBCL was
5493 derived from, and stale in sbcl-0.6.1.)
5494 * Various errors in the cross-compiler type system were detected
5495 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5496 (enabling various consistency checks). Many of them were fixed,
5497 but some hard problems remain, so the compiler is back to
5498 running without *TYPE-SYSTEM-INITIALIZED* for now.
5499 * As part of the cross-compiler type system cleanup, I implemented
5500 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5501 * I have started adding UNCROSS calls throughout the type system
5502 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5503 on cross-compiler input files will be able to go away, and various
5505 * CONSTANTP now returns true for quoted forms (as explicitly required
5508 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5510 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5511 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5512 (MAKE-LIST -1). In the longer term, it ought to become true
5513 that declarations are assertions even at SAFETY 1. For now, it's not
5514 quite true even at SAFETY 3, but it's at least more nearly true..
5515 (Note that this change seems to increases the size of the system by
5516 O(5%) and to decrease the speed of the compiler by 20% or more.)
5517 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5518 for the problem of printing dozens of lines of distracting information
5519 about low-level system machinery as part of the top stack frame
5520 on entry to the debugger when an undefined function was called.
5521 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5522 is not reset to COMMON-LISP-USER.
5523 * Compilation of stuff related to dyncount.lisp has been made conditional
5524 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5525 smaller. The various dyncount-related symbols have been moved into
5526 a new "SB-DYNCOUNT" package.
5527 * tty-inspect.lisp has been renamed to inspect.lisp.
5528 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5529 feature has gone away. (When we eventually port to other flavors of
5530 libc and/or Unix, we'll try to make the differences between flavors
5531 invisible at the user level.)
5532 * Various other *FEATURES* tags, and/or their associated conditionals,
5533 have been removed if obsolescent, or given better documentation, or
5534 sometimes given more-mnemonic names.
5536 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5538 * tidied up "make.sh" script
5539 * tidied up system directory structure
5540 * better "clean.sh" behavior
5541 * added doc/FOR-CMUCL-DEVELOPERS
5542 * many many small tweaks to output format, e.g. removing possibly-confusing
5543 trailing #\. character in DESCRIBE-INSTANCE
5544 * (EQUALP #\A 'A) no longer signals an error.
5545 * new hashing code, including EQUALP hashing
5546 * tidied up Lisp initialization and toplevel
5547 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5548 * command line argument processing
5549 * added POSIX-GETENV function to deal with Unix-ish environment variables
5550 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5551 terminating SBCL on EOF
5552 * non-verbose GC by default
5553 * There is no more "sbcl" shell script; the sbcl file is now the C
5554 runtime executable (just like CMU CL).
5555 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5557 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5558 symbol and package information as Lisp native symbol and package objects
5559 instead of strings naming symbols and strings naming packages. This way,
5560 whenever packages are renamed (as in warm init), debug information is
5561 transformed along with everything else.
5562 * tweaked the optimization policy declarations which control the building
5563 of SBCL itself. Now, among other things, the system no longer saves
5564 source location debugging information. (This helps two problems at once
5565 by reducing SBCL size and by keeping SBCL from trying to look for its
5566 sources -- which may not exist -- when reporting errors.)
5567 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5568 debugging and testing purposes
5569 * cleaned up printing, making the printer call PRINT-OBJECT for
5570 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5571 methods, giving nearly-ANSI behavior
5572 * converted almost all special variables to use *FOO* naming convention
5573 * deleted PARSE-TIME functionality, since it can be done portably
5574 * moved some files out of cold init into warm init
5575 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5577 * regularized formatting of source files
5578 * added an install.sh script
5579 * fixed ridiculous memory usage of cross-compiler by making
5580 compiler/alloc.lisp not try to do pooling unless it can hook
5581 itself into the GC of the cross-compilation host. Now the system
5582 builds nicely on my old laptop.
5583 * added :SB-ALLOC in target-features.lisp-expr
5584 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5585 was not implemented)
5586 * re-did condition handling and note reporting in the compiler. Notes
5587 are no longer handled by signalling conditions. Style warnings
5588 and warnings are handled more correctly and reported in such a way
5589 that it's easy to find one or the other in your output (so that you
5590 can e.g. figure out which of many problems caused COMPILE-FILE to
5592 * changed the severity of several compiler warnings from full WARNING
5593 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5594 compiler note reporting so that it doesn't use the condition system
5595 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5596 COMPILE-FILE command)
5597 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5598 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5599 no longer supported, since their implementation was deeply intertwingled
5600 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5601 * removed bogus "support" for compiler macros named (SETF FOO), and
5602 removed the compiler macro for SETF INFO (but only after making a fool
5603 of myself on the cmucl-imp mailing list by posting a bogus patch for
5604 DEFINE-COMPILER-MACRO..)
5605 * Compiled files containing forms which have side effects on the Lisp
5606 reader (such as DEFPACKAGE forms) are now handled more correctly.
5607 (Compiler queuing of top level lambdas has been suppressed by setting
5608 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5609 * deleted various currently-unused source files, e.g. gengc.lisp. They
5610 may be added back at some point e.g. when porting to other architectures,
5611 but until they are it's distracting to distribute them and to try to
5613 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5614 there were so many of them they're just distractions, and UNCROSS is
5615 known to be able to handle the current sources
5616 * moved PROFILE functionality into TRACE, so that it will be clear
5617 how the wrapping and unwrapping of functions when you profile them
5618 interacts with the wrapping and unwrapping of functions when you
5619 trace them. (Actually, the functionality isn't there yet, but at least
5620 the interface specification is there. Hopefully, the functionality will
5621 arrive with some future maintenance release.)
5622 * removed host-oops.lisp
5623 * changed signature of QUIT function to allow UNIX-CODE argument
5624 * fixed READ-SEQUENCE bug
5625 * tweaked verbose GC output so that it looks more like the progress
5626 output that ANSI specifies for functions like LOAD
5627 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5628 * added <http://sbcl.sourceforge.com> to the banner information printed by