1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.37:
3 * INCOMPATIBLE CHANGE: Thread names are now restricted to SIMPLE-STRINGs
4 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
5 * DEPRECATION: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
6 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
7 * DEPRECATION: SB-THEAD:GET-MUTEX was deprecated in favor of
9 * new contrib: SB-CONCURRENCY is a new contrib; it's supposed to contain
10 additional data structures and tools for concurrent programming; at the
11 moment it contains a lock-free queue, and a lock-free mailbox
13 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
14 GET-MUTEX but takes &key rather than &optional parameters. Also added
15 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
17 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
18 SB-THREAD:WAIT-ON-SEMAPHORE.
19 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
21 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
22 conditions to defer the deadline for forever.
23 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
25 * enhancement: errors from NO-APPLICABLE-METHOD and
26 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
27 generic function call.
28 * enhancement: SB-BSD-SOCKET improvements
29 ** sockets and socket streams now have a more informative printed
30 representation based on the corresponding SOCKET-NAME and
32 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
34 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
35 CL:CLOSE when appropriate, and no longer disassociates the stream
36 from the socket if close failed. (lp#543951)
37 * improvements to the instrumenting profiler
38 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
39 ** optimization: counters no longer use locks for the overflow mode.
40 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
41 incurred an off-by-one miscount.
42 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
43 * enhancement: improved DEFMETHOD pretty-printing.
44 * enhancement: perform range reduction when arguments are too large for
45 x87's transcendentals (instead of returning 0). (lp#327192)
46 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
47 some of CL-PPCRE's macros. (lp#570079)
48 * enhancement: our machine code is slightly less hostile to valgrind on
50 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
51 * bug fix: a rare case of startup-time page table corruption.
52 * bug fix: a semaphore with multiple waiters and some of them unwinding due
53 to timeouts could be left in an inconsistent state.
54 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
55 * bug fix: misoptimization of multiplication by one in
56 (SB-C::FLOAT-ACCURACY 0) policies.
57 * bug fix: miscounts in SB-PROFILE.
58 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
59 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
60 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
61 up itself" (March 2010) for further details.
62 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
63 against length of the list if the element is found before the specified
64 END is reached. (thanks to Alec Berryman, lp#554385)
65 * bug fix: errors signalled during package graph modification no longer
66 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
67 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
68 :SB-DOC feature. (lp#552564)
69 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
70 * bug fix: more robust runtime executable path detection. (lp#375549)
71 * bug fix: GCD always returns positive values. (lp#413680)
72 * bug fix: Converting division to multiplication by reciprocal handles
74 * bug fix: We were too eager in eliding range reduction tests on x87.
75 The maximal magnitude is 2^63, not 2^64.
76 * bug fix: Transforms for TRUNCATE don't die when the result is completely
78 * bug fix: Maybe restore buildability on Alpha.
79 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
82 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
83 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
84 stack frame thrown from.
85 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
86 compiler optimization qualities inside dynamic extent of its body.
87 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
88 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
90 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
91 constraint propgation, allowing better compilation eg. when used to
92 access structures with WITH-SLOTS. (lp#520366)
93 * optimization: the compiler is now more aware of the type of the underlying
94 storage vector for multidimensional simple arrays resulting in better code
95 for accessing such arrays.
96 * optimization: passing NIL as the environment argument to TYPEP no longer
97 inhibits optimizing it. (lp#309788)
98 * optimization: more efficient register usage when handling single-float
99 arguments on x86-64. (thanks to Lutz Euler)
100 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
101 pre-allocated temporary vectors. (lp#496249)
102 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
103 in :INITIAL-CONTENTS. (lp#523612)
104 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
105 functions. (lp#524707)
106 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
107 WITH-SLOTS usages during compilation.
108 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
109 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
110 all x86oid platforms with :UD2-BREAKPOINTS target feature.
111 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
112 instruction (tested on x86oid linux with ud2-breakpoints).
113 * bug fix: slam.sh now works on win32.
114 * bug fix: better differences of numeric types. (lp#309124)
115 * bug fix: arrays declared intersection and union types can have their
116 upgraded element type derived. (lp#316078)
117 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
118 threads started during profiling. (lp#472499)
119 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
121 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
122 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
123 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
124 values instead of signaling an error. (lp#309093)
125 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
127 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
128 declarations (lp#497321)
129 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
130 and failed to detect circular lists (lp#452008)
131 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
133 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
134 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
135 due to it, so that handlers can run.
136 * bug fix: reparsing undefined types if they have become defined since
138 * bug fix: missing &REST type in a proclamation for a function with both
139 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
140 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
141 expanded calls (lp#542174)
142 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
143 than just at toplevel form.
145 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
146 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
147 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
148 but work on type specifiers.
149 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
150 to name a type specifier.
151 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
152 specifier is valid where "valid" basically means "would be accepted as
153 second argument of TYPEP".
154 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
155 returns the function's declared, or derived FTYPE.
156 * new feature: SB-POSIX now supports accessing the d_ino member of
157 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
158 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
159 provide for seeding a RANDOM-STATE object with user-provided data or
160 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
161 attempt to initialize the returned state from the operating system's
162 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
163 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
164 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
165 * bug fix: Fix grammar and style issues for the docstrings of
166 printer-related variables and functions. (Thanks to mon_key; launchpad
168 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
170 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
171 in a row even though a handler defered the deadline long into the
173 * bug fix: A deadline handler was run without interrupts enabled for a
174 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
175 in infinitely spinning, non-killable threads.
176 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
177 before reaching the erring stack frame.
178 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
179 real power. (launchpad bug lp#525949)
180 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
181 GENCGC platforms. (launchpad bug lp#529014)
182 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
183 (launchpad bug lp#525916)
184 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
185 (Thanks to Robert Goldman)
187 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
188 * optimization: ROUND with a single single-float or double-float argument
189 is properly inlined when possible.
190 * optimization: Slightly better code is generated for integer<->float
191 conversions and for single-float<->double-float conversions on x86-64.
192 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
193 code for 32-bit and 64-bit rotations on x86-64.
194 * bug fix: The install script changes the ownership of directories as well
195 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
196 launchpad bug lp#508485)
197 * bug fix: TRUNCATE with a single single-float or double-float argument is
198 properly inlined when possible. (launchpad bug lp#489388)
199 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
200 no longer causes a compiler error on x86 and ppc.
201 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
202 always relative to *READTABLE* rather than the passed argument.
204 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
205 * minor incompatible change: threading support is now enabled by default
207 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
209 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
210 are now caught and reported just like errors during macroexpansion.
211 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
212 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
213 * enhancement: ASDF systems can now depends on SB-QUEUE.
214 * fixes and improvements related to Unicode and external formats:
215 ** bug fix: error handling and restart usage in the ucs-2 external format
217 ** there is now an implementation of the ucs-4 external format.
218 ** the utf-16 and utf-32 external formats are supported.
219 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
220 in the environment. setenv() and unsetenv() are also provided. (reported by
221 Fare Rideau; launchpad bug lp#460455)
222 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
223 loading. This ensures sensible errors for .FASL files from other
224 implementations on case-insensitive filesystems. (reported by Willem
225 Broekema; launchpad bug lp#489417)
226 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
227 Willem Broekema; launchpad bug lp#489698).
228 * bug fix: some minor code rearrangements to reenable warning-free building
229 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
230 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
232 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
235 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
236 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
237 * improvement: support O_LARGEFILE access to files larger than 2GB on
238 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
239 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
240 definitions for methods specializing on the passed class itself.
241 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
242 definitions for methods specializing on the passed class itself, or on
244 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
245 about itself during the build (e.g. for M-? in Slime), if this flag is
246 enabled in customize-target-features.lisp. This will increase the core
247 size by about 5-6mb, though, so it's mostly interesting to SBCL
249 * new feature: various GENCGC tuning parameters have been experimentally
250 documented and exported from SB-EXT. See documentation for details.
251 * fixes and improvements related to Unicode and external formats:
252 ** the Unicode character database has been upgraded to the
253 Unicode 5.2 standard, giving names and properties to a number of new
254 characters, and providing a few extra characters with case
256 ** improvement: restarts for providing replacement input/output on coding
257 errors for fd-stream external formats.
258 ** improvement: where :<encoding> is a keyword corresponding to an
259 external format the system supports, it is now possible to specify
260 (:<encoding> :replacement <character>) as an external format which will
261 automatically substitute <character> on encoding or decoding errors for
262 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
264 ** improvement: the file streams underlying the standard streams (such as
265 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
266 which uses the replacement mechanism to handle encoding errors,
267 preventing various infinite error chains and unrecoverable I/O
269 ** minor incompatible change: the utf-8 external format now correctly
270 refuses to encode Lisp characters in the surrogate range (char-codes
271 between #xd800 and #xdfff).
272 ** fix a typo preventing conversion of strings into octet vectors
273 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
275 ** fix a bug in the octet multibyte handling of decoding errors and the
276 USE-VALUE restart. (launchpad bug lp#314939)
277 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
278 restart on fd-stream decoding errors.
279 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
280 error is near the end of file.
281 ** fix a double-error case in unibyte octet conversions, when the first
282 use of USE-VALUE is ignored.
283 ** fix bugs in handling of undefined code points in unibyte encodings.
284 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
285 streams after an UNREAD-CHAR.
286 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
287 object is allocated in a boxed region of dynamic space.
288 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
289 fork with multiple Lisp threads running is made, instead of going
290 ahead with unpredictable consequences. (reported by Leslie Polzer)
291 * bug fix: uses of slot accessors on specialized method parameters within
292 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
293 error while finalizing the class. This fix may cause classes with slot
294 accessors to be finalized later than previously. (reported by Lars Rune
295 Nøstdal; launchpad bug lp#473699)
296 * bug fix: restore buildability on the MIPS platform. (regression from
297 1.0.30.38, reported by Samium Gromoff)
298 * bug fix: inspecting closures is less likely to fail with a type error.
299 * bug fix: no timer starvation when setting the system clock back.
300 (launchpad bug lp#460283)
301 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
302 standard pprint dispatch table as specified by CLHS.
303 * bug fix: give CLISP a hint about a type declaration to enable it to build
304 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
306 * bug fix: correctly dump literal objects in defaulting forms of arglists.
307 (reported by Attila Lendvai; launchpad bug lp#310132)
308 * bug fix: distinguish in type specifiers between arrays that might be
309 complex and arrays that are definitely complex. (launchpad bug lp#309129)
310 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
311 type. (reported by Levente Mészáros; launchpad bug lp#485972)
312 * bug fix: setting the value of a symbol-macro within a method in the
313 presence of type declarations works properly again. (reported by Iban
314 Hatchondo; launchpad bug lp#485019)
316 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
317 * optimization: faster FIND and POSITION on strings of unknown element type
318 in high SPEED policies. (thanks to Karol Swietlicki)
319 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
321 * improvement: better error signalling for bogus parameter specializer names
322 in DEFMETHOD forms (reported by Pluijzer)
323 * bug fix: DELETE-FILE once again works on logical pathnames (regression
325 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
327 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
328 removes previous default initargs (reported by Lars Rune Nøstdal and
330 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
331 lambda-lists. (reported by Peter Seibel)
332 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
333 correctly when starting from an executable core without saved runtime
334 options (reported by Faré Rideau, thanks to Zach Beane)
335 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
336 an optimization note instead. (reported by Martin Cracauer)
337 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
338 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
339 new process group if it doesn't need to share stdin with the sbcl
340 process. (thanks to Leslie Polzer)
341 * bug fix: SATISFIES could be misoptimized to refer to a local function.
342 (reported by Stanislaw Halik)
344 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
345 * improvement: stack allocation is should now be possible in all nested
346 inlining cases: failure to stack allocate when equivalent code is manually
347 open coded is now considered a bug.
348 * improvements related to Unicode:
349 ** the Unicode character database has been upgraded to the
350 Unicode 5.1 standard, giving names and properties to a number of new
351 characters, and providing a few extra characters with case
353 ** the system now recognizes and produces names for Unicode Hangul
355 ** the EBCDIC-US external-format is now supported for octet operations
356 (as well as for stream operations).
357 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
358 be used to output toplevel compile-time effects into a separate .CFASL
360 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
361 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
363 * optimization: TRUNCATE on known single- and double-floats is upto 25%
365 * optimization: division of floating point numbers by constants uses
366 multiplication by reciprocal when an exact reciprocal exists.
367 * optimization: multiplication of single- and double-floats floats by
368 constant two has been optimized.
369 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
370 sufficient type information is available. (thanks to Leslie Polzer)
371 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
372 known structure objects are as efficient as defstruct generated accessors.
373 * optimization: unused vector creation can now be optimized away.
374 * improvement: ASDF systems can now depends on SB-INTROSPECT.
375 * improvement: a STYLE-WARNING is signalled when a generic function
376 clobbers an earlier FTYPE proclamation.
377 * improvement: the compiler is able to track the effective type of
378 generic function across method addition and removal even in the
379 absence of an explicit DEFGENERIC.
380 * improvement: DESCRIBE now reports on symbols naming undefined
381 but assumed or declared function as well.
382 * improvement: recompilation of systems using SB-GROVEL now works
383 (thanks to Leslie Polzer)
384 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
385 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
387 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
388 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
389 well as user defined declaration names.
390 ** VARIABLE-INFORMATION is now aware of alien variables.
391 * improvement: improved address space layout on OpenBSD (thanks to Josh
393 * improvement: pretty-printing of various Lisp forms has been improved
394 (thanks to Tobias Rittweiler)
395 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
396 unused were deleted in safe code. (reported by John Fremlin)
397 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
399 * bug fix: some out-of-line array predicates were missing (reported by
401 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
403 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
404 (thanks to Larry D'Anna)
405 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
406 as well. (reported by Josh Elsasser)
407 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
408 leading to possible attempts to delete the same file twice. See docstring
409 on DELETE-FILE for details. (reported by John Fremlin)
410 * bug fix: DELETE-FILE once again deletes the file named by the pathname
411 designator argument, rather than its truename. (reported by Luis
413 * bug fix: the low-level debugger had 32-bit assumptions and was missing
414 information about some array types. (thanks to Luis Oliveira)
415 * bug fix: moderately complex combinations of inline expansions could
416 be miscompiled if the result was declared to be dynamic extent.
417 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
418 form (+ <variable> <integer>) were miscompiled under certain
420 * bug fix: in some cases no compiler note about failure to stack allocate
421 was emitted, even if the objects were in fact heap allocated.
422 * bug fix: minor violation of "otherwise inaccessible" rule for stack
423 allocation could cause objects users might reasonably expect to
424 be heap allocated to be stack allocated.
425 * bug fix: DESCRIBE signalled an error for generic functions under
426 certain circumstances. (thanks to Leslie Polzer)
427 * bug fix: Fixed spelling of an error message.
429 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
430 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
431 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
432 of SB-THREAD:THREAD-ERROR-THREAD.
433 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
434 * new feature: docstrings for local and anonymous functions are no longer
435 discarded. (thanks to Leslie Polzer)
436 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
437 values in other threads.
438 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
439 about object allocation.
440 * optimization: division of a real float by a complex float is implemented
441 with a specialised code sequence.
442 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
443 keywords is an order of magnitude faster.
444 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
445 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
446 methods, and similarly for non-standard metaclass classes as long as there
447 are no methods additional on MAKE-INSTANCE.
448 * optimization: more efficient type-checks for FIXNUMs when the value
449 is known to be a signed word on x86 and x86-64.
450 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
451 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
453 * optimization: compiler is smarter about delegating argument type checks to
455 * optimization: several character functions are now compiled somewhat more
456 efficiently. (reported by Lynn Quam)
457 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
458 * improvement: less unsafe constant folding in floating point arithmetic,
459 especially for mixed complex/real -float operations.
460 * optimization: constant double and single floats are stored in native
461 unboxed format on x86[-64].
462 * optimization: smarter code for arithmetic operations with constant floats,
463 complex floats, or integers on x86[-64].
464 * optimization: smarter code for conjugate/multiplication of float complexes
465 and abs/negate of floats on x86-64.
466 * optimization: more efficient complex float and real float operations on
468 * improvement: complex float division is slightly more stable.
469 * improvement: DESCRIBE output has been reworked to be easier to read and
470 contains more pertinent information.
471 * improvement: failure to provide requested stack allocation compiler notes
472 provided in all cases (requested stack allocation not happening without a
473 note being issued is now considered a bug.)
474 * bug fix: SB-POSIX exports the documented types and functions
475 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
476 types. (reported by "abhi")
477 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
478 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
479 (thanks to Paul Khuong)
480 * bug fix: looping around HANDLER-CASE could silently consume stack space
481 on each iteration. (reported by "foobar")
482 * bug fix: better error signalling when calls to functions seeking elements
483 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
484 (reported by Tobias Rittweiler)
485 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
486 directory components now works as it used to. (various prolems reported by
487 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
488 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
489 (reported by Elliot Slaughter, thanks to Stas Boukarev)
490 * bug fix: bogus undefined variable warnings from fopcompiled references to
491 global variables. (thanks to Lars Rune Nøstdal)
492 * bug fix: foreign function names should now appear in backtraces on
493 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
494 * bug fix: SETF compiler macro documentation strings are not discarded
496 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
497 (thanks to Alex Plotnick)
498 * bug fix: SLEEP accepts large integer arguments, truncating them to
499 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
500 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
501 * bug fix: compiler notes for expensive slot type checks could be emitted
502 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
504 changes in sbcl-1.0.29 relative to 1.0.28:
505 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
506 https://bugs.launchpad.net/sbcl
507 Bugs can be reported directly there, or by sending email to
508 sbcl-bugs@lists.sourceforge.net
509 (no subscription required.)
510 * minor incompatible change: under weak type checking policy integer
511 types are weakened less aggressively.
512 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
513 allowed to return, which causes SBCL to quit with exit status 0. Previously
514 if the function returned with a small integer return value, that value
515 was accidentally reused as the exit status.
516 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
517 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
518 :HASH-FUNCTION argument. Refer to user manual for details.
519 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
521 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
522 microseconds since the Unix epoch on all platforms.
523 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
524 allows the compiler to safely elide boundedness checks for special
526 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
527 the symbol, prohibits both lexical and dynamic binding. This is mainly an
528 efficiency measure for threaded platforms, but also valueable in
530 * new feature: UNC pathnames are now understood by the system on Windows.
531 * optimization: the compiler uses a specialized version of FILL when the
532 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
534 * optimization: accesses to potentially non-simple arrays where element type
535 is known are 50% faster.
536 * optimization: compiler now generates faster array typechecking code.
537 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
539 * optimization: multidimensional array accesses in the absence of type
540 information regarding array rank are approximately 10% faster due to
541 open coding of ARRAY-RANK.
542 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
543 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
545 * optimization: result of call to VECTOR can now be stack allocated.
546 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
547 as long as the resulting array is one-dimensional and has a known
548 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
549 length of the list matches the known length of the vector does not
550 allocate the list as an intermediate step. Ditto for VECTOR and simple
552 * optimization: MAKE-ARRAY can now stack allocate in the presence of
553 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
554 known element type, and is known to be simple and one dimensional.
555 * improvement: SBCL now emits a compiler note where stack allocation was
556 requested but could not be provided (not in all cases, unfortunately)
557 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
558 * improvement: pretty-printing loop has been implemented properly. (thanks
559 to Tobias Rittweiler)
560 * documentation: CLOS slot typechecing policy has been documented.
561 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
562 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
563 pointer, leading to memory faults. (thanks to Bart Botta)
564 * bug fix: better floating point exception handling on x86/OpenBSD.
565 (thanks to Josh Elsasser)
566 * bug fix: exit status from QUIT when called under --script was lost
567 (reported by Hubert Kauker)
568 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
569 same implementation of FILL to initialize the array, even if a more
570 efficient one was available (reported by Stas Boukarev, thanks to
572 * bug fix: potential miscompilation of array stack allocation on x86 and
573 x86-64. (reported by Time Tossavainen)
574 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
575 result in their subforms being treated as top level forms. (reported by
577 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
578 than a machine register could leave garbage in the high bits of the
579 result register (bug 316325).
580 * bug fix: disable address space randomization Linux/x86-64 as well,
581 not just x86-64. (reported by Ken Olum)
582 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
583 generate incorrect code.
584 * bug fix: #201; type inference for CONS and ARRAY types could derive
585 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
586 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
587 could not be assigned to or bound with PROGV. (reported by Lorenz
589 * bug fix: the value of CL:- in the inspector was the previous expression
590 evaluated rather than the expression being evaluated.
591 * bug fix: constants can no longer be locally declared special.
592 * bug fix: signals delivered to threads started from foreign land (read:
593 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
594 thread by blocking all signals and resignalling.
595 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
596 from :INITFORM, if any.
598 changes in sbcl-1.0.28 relative to 1.0.27:
599 * a number of bugs in cross-compilation have been fixed, with the ultimate
600 result that building under (at least) clisp should be much more reliable.
601 * minor incompatible changes: echo-streams now propagate unread-char to the
602 underlying input stream, and no longer permit unreading more than one
604 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
605 frames, allowing for instance more reliable backtraces.
606 * improvement: the debugger REPL can now reference lexical variables
607 by name directly for code compiled with (DEBUG 3).
608 * improvement: errors from malformed declarations now have better source
609 paths associated with them. (thanks to Tobias Rittweiler)
610 * optimization: faster local calls on x86/x86-64
611 * bug fix: some error messages for out-of-bound array indexes confused the
612 index and the bound. (thanks to Stas Boukarev)
613 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
615 * bug fix: running regressions tests in shells without OSTYPE set now works.
616 (reported by Harald Hanche-Olsen)
617 * bug fix: more robust static space exhaustion signalling from
618 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
619 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
620 docstring away instead of storing it under names such as (LAMBDA (X)).
621 (reported by Leslie Polzer)
622 * bug fix: timers could go off in the wrong order, be delayed indefinitely
623 (thanks to Ole Arndt for the patch)
624 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
625 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
626 potentially-invalid effective methods in its cache.
627 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
628 instances as well (thanks to Paul Khuong)
629 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
630 SB-POSIX:WAITPID and their C equivalents.
631 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
633 changes in sbcl-1.0.27 relative to 1.0.26:
634 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
635 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
636 * improvement: the system either recovers from stack exhaustion or dies
637 properly as opposed to leaving the user uncertain of whether the handler
638 trampled on some random memory next to the stack or having to rely on
639 --lose-on-corruption (which is still a good idea to use in production
640 because stack exhaustion can happen in signal handlers which will likely
642 * bug fix: fix gc related interrupt handling bug on ppc (regression from
643 1.0.25.37, reported by Harald Hanche-Olsen)
644 * bug fix: work around signal delivery bug in darwin (regression from
645 1.0.25.44, reported by Sidney Markowitz)
646 * bug fix: fix ERROR leaking memory (reported by David Thompson)
648 changes in sbcl-1.0.26 relative to 1.0.25:
649 * incompatible change: an interruption (be it a function passed to
650 INTERRUPT-THREAD or a timer function) runs in an environment where
651 interrupts can be enabled. The interruption can use
652 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
653 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
654 potentially running out of stack. Keep in mind that in the absence
655 of WITHOUT-INTERRUPTS some potentially blocking operation such as
656 acquiring a lock can enable interrupts.
657 * incompatible change: GC-OFF and GC-ON are removed, as they were
658 always unsafe. Use WITHOUT-GCING instead.
659 * new feature: runtime option --disable-ldb
660 * new feature: runtime option --lose-on-corruption to die at the
661 slightest hint of possibly non-recoverable errors: running out of
662 memory, stack, alien stack, binding stack, encountering a memory
663 fault, etc. In the absence of --lose-on-corruption a warning is
665 * enhancement: detect binding stack exhaustion
666 * enhancement: detect alien stack exhaustion on x86/x86-64
667 * improvement: generally more stable and reliable interrupt handling
668 * improvement: there is a per thread interruption queue,
669 interruptions are executed in order of arrival
670 * improvement: a repeating timer reschedules itself when the it has
671 finished, but expiration times are spaced equally. If an
672 expiration time is in the past it will trigger after a short grace
673 period that may give a chance to other things to run.
674 * optimization: slightly faster gc on multithreaded builds
675 * optimization: faster WITHOUT-GCING
676 * bug fix: when JOIN-THREAD signals an error, do it when not holding
677 important locks so that the debugger/handler doesn't produce
678 recursive errors or deadlock.
679 * bug fix: real-time signals are not used anymore, so no more
680 hanging when the system wide real-time signal queue gets full.
681 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
683 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
684 * bug fix: fix random memory faults related to interrupts on alpha
685 * bug fix: fix random memory faults related to interrupts on sparc
686 * bug fix: fix deadlocks related to starting threads
687 * bug fix: fix deadlines on locks on futex platforms
688 * bug fix: restore errno in signal handlers
689 * bug fix: fix deadlocks related to hash tables
690 * bug fix: fix deadlocks in pcl
692 changes in sbcl-1.0.25 relative to 1.0.24:
693 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
694 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
695 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
696 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
697 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
698 better name and does not return values so stale on multiprocessor systems.
699 Also, HOLDING-MUTEX-P was added for about the only sane usage of
701 * improvement: unithread builds keep track of MUTEX-VALUE.
702 * improvement: reading from a TWO-WAY-STREAM does not touch the output
703 stream anymore making it thread safe to have a concurrent reader and
704 a writer, for instance, in a pipe.
705 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
706 arguments, making compiler-macros for SETF-functions able to inspect
707 their constant arguments.
708 * improvement: COMPILE-FILE reports times with millisecond accuracy
709 (thanks to Luis Oliveira)
710 * optimization: CHAR-CODE type derivation has been improved, making
711 TYPEP elimination on subtypes of CHARACTER work better. (reported
712 by Tobias Rittweiler, patch by Paul Khuong)
713 * bug fix: setting alien structure fields of type struct by value now
714 computes the right offset for the memory copy.
715 * bug fix: compilation problem involving inlined calls to aliens with
716 result type VOID. (reported by Ken Olum)
717 * bug fix: #235a; sequential inline expasion in different policies no
718 longer reuses the functional from the previous expansion site.
719 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
720 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
721 * bug fix: named ENUMs in multiply-referenced alien record types no longer
722 cause an implied type redefinition. Regression from 1.0.21.29.
723 * bug fix: sign-extension of small signed return values now works with C
724 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
725 * improvements to the Windows port:
726 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
727 Westfold, thanks to Rudi Schlatte)
729 changes in sbcl-1.0.24 relative to 1.0.23:
730 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
731 vector of a multidimensional SIMPLE-ARRAY.
732 * new feature: the system now signals a continuable error if standard
733 readtable modification is attempted. (thanks to Tobias Rittweiler)
734 * new feature: DIRECTORY has been extended with a non-standard keyword
735 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
736 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
737 has been robustified and documented better. (thanks to Robert Goldman)
738 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
739 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
740 * tradeoff: constant FORMAT control strings are now compiled unless
741 SPACE > SPEED (previously only when SPEED > SPACE.)
742 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
744 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
746 * bug fix: lexical type declarations are now correctly reported by
747 SB-CLTL2. (reported by Larry D'Anna)
748 * bug fix: STRING-TO-OCTETS did not handle :START properly when
749 using UTF-8 as external format. (thanks to Luis Oliveira)
750 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
751 are signalled correctly. (thanks to Stas Boukarev)
752 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
753 designator. (thanks to Tobias Rittweiler)
754 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
755 designator, and returns T instead of the function. (thanks to
757 * bug fix: direct superclasses of STANDARD-CLASS and
758 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
759 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
760 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
761 when no class with the named slot yet exists no longer causes a
762 compile-time style-warning.
763 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
764 in safe code. (reported by Didier Verna)
765 * bug fix: #430; nested structure constructors can stack allocate.
766 * bug fix: on some 64-bit platforms dynamic space size was truncated
767 to #xffff0000 bytes. (reported by Benjamin Lambert)
768 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
769 REPL unusable. (reported by Daniel Herring)
770 * bug fix: return values of READ-SEQUENCE did not take :START into
771 account on file streams, regressions since 1.0.12.22. (reported by
772 Thomas Russ, patch by Paul Khuong)
773 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
774 method specializer used to confuse permuation vector optimization.
775 * bug fix: system inserted bogus implicit type declarations for local
776 special variables in DEFMETHOD bodies.
777 * bug fix: #354; duplicated frames in backtraces due to
778 non-tail-call-optimized XEPs to functions with return type NIL
780 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
781 initializes structure object slots according to DEFSTRUCT initforms,
782 and DEFSTRUCT forms :INCLUDEind structure classes defined using
783 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
784 (reported by Bruno Haible and Stephen Wilson)
785 * bug fix: #395; fill-pointer output streams used now support
786 element-type BASE-CHAR as well.
787 * bug fix: compiler error when attempting to derive return value of
788 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
790 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
792 * bug fix: Mac OS X binaries should now be portable between Leopard
795 changes in sbcl-1.0.23 relative to 1.0.22:
796 * enhancement: when disassembling method functions, disassembly
797 for the associated fast function is also produced.
798 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
800 * optimization: printing with *PRINT-PRETTY* true is now more
801 efficient as long as the object being printed doesn't require
802 special handling by the pretty printer.
803 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
804 now interact correctly with type declarations.
805 * partial bug fix: PCL detects infinite recursion during wrapper
806 validation. (thanks to Attila Lendvai)
807 * bug fix: #426; nested function calls are inlined properly.
808 Previously if FOO was an inline function, in calls of the form
809 (FOO (FOO ...)) the outer call was not inlined.
810 * bug fix: long long arguments passed in registers to alien
811 functions on PowerPC Linux and NetBSD are now handled correctly
812 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
814 changes in sbcl-1.0.22 relative to 1.0.21:
815 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
816 for the shared object in the current directory, but passes the native
817 namestring of the designated pathname to the operation system's shared
818 object loading function as-it.
819 * minor incompatible change: --disable-debugger toplevel option now takes
820 effect before processing of initialization files and --eval or --load
822 * new feature: new commandline argument: --script, which supports
823 shebang lines. See documentation for details. (based on work by
825 * new feature: SAVE-LISP-AND-DIE can save current values of
826 --dynamic-space-size and --control-stack-size in the executable core,
827 causing it to skip normal runtime option processing. See documentation
828 for details. (thanks to Zach Beane)
829 * enhancement: inoccous calls to EVAL or generic functions dispatching
830 on subclasses of eg. STREAM no longer cause compiler notes to appear.
831 * enhancement: the system no longer resignals errors from --load and
832 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
833 associated with the original error to be lost. (thanks to Ariel
835 * enhancement: :DONT-SAVE keyword argument has been added to
836 LOAD-SHARED-OBJECT for controlling interaction with
837 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
838 the effects of an earlier LOAD-SHARED-OBJECT call.
839 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
840 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
841 provided. (reported by Cedric St-Jean)
842 * bug fix: circularity handling in the reader did not treat raw
843 structure slots correctly. (reported by Cedric St-Jean)
844 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
845 file descriptors when there were none.
846 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
847 was broken. (reporteed by Willem Broekema)
848 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
849 pathnames without a directory.
850 * bug fix: COMPILE-FILE did not warn about undefined variable
851 references at toplevel, and LOAD of the resulting fasl did
853 * bug fix: functions with non-required arguments used to end up with
854 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
855 * bug fix: redefining a function with non-required arguments didn't
856 update the system's knowledge about its call signature properly.
857 * bug fix: fixed #431; incompatible alien record type redefinitions
858 are detected and handled. (reported by Neil Haven)
859 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
860 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
862 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
863 after alien stack frames.
864 * bug fix: strings passed to mk{s,d}temp lacked null termination
866 changes in sbcl-1.0.21 relative to 1.0.20:
867 * new feature: the compiler is able to track the effective type of a
868 generic function across method addition and removal.
869 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
870 appropriately typed structure slots without locking.
871 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
872 information like those gathered by TIME using a programming-friendly
874 * new feature: TIME reports time taken even if the form performs a
875 non-local transfer of control.
876 * enhancement: reduced conservativism on GENCGC platforms: on
877 average 45% less pages pinned (measured from SBCL self build).
878 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
879 mutate constant symbols or violate declaimed type of the symbol.
880 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
881 sleeping on the semaphore in heavily contested semaphores.
882 * bug fix: semaphores and condition variables were not interrupt
884 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
885 owned by other threads anymore.
886 * bug fix: FIND on lists called KEY outside the specified
887 subsequence. (reported by budden)
888 * bug fix: LOG doesn't use single-float intermediate results when
889 given mixed integer and double-float arguments, leading to better
890 precision. (reported by Bob Felts)
891 * bug fix: LOG with base zero returned values of inconsistent type.
893 changes in sbcl-1.0.20 relative to 1.0.19:
894 * minor incompatible change: OPTIMIZE qualities
895 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
896 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
897 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
898 * documentation: some slot access efficiency guidelines have been
899 added to the user manual.
900 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
901 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
902 as ASSOC and MEMEBER.
903 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
904 to more efficient EQ-comparison versions more often.
905 * optimization: enhanced derivation of DOLIST iteration variable type
907 * optimization: constant folding of simple (LIST ...) forms as DOLIST
909 * optimization: runtime lookup of function definitions can be
910 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
911 * optimization: compiler is able to derive the return type of
912 (AREF (THE STRING X) Y) as being CHARACTER.
913 * optimization: CLRHASH on empty hash-tables no longer does pointless
914 work. (thanks to Alec Berryman)
915 * optimization: REPLACE deftransforms don't punt when :START1 or
917 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
918 no longer emits a code deletion note. (reported by Andrew
920 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
921 functions with an odd number of &OPTIONAL arguments, a &REST
922 argument, and one or more &KEY arguments at the call site.
923 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
924 arguments appeared at call sites as well.
925 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
926 READ-LINE &co can no longer read from them afterwards. (reported
928 * bug fix: fixed #427: unused local aliens no longer cause compiler
929 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
931 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
932 alien-stack leakage. (reported by Andy Hefner)
933 * bug fix: PROGV signals an error when an attempt to violate declared
934 type of a variable or bind a constant is made.
935 * bug fix: SET signals an error when an attempt to violate declared
936 type of a variable is made.
937 * bug fix: restart computation during the execution of a restart
938 test function no longer causes infinite recursion. (reported by
940 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
941 signals an error. (thanks to Pierre Mai)
942 * bug fix: EXPORT left symbol unexported in conflict situations.
943 (thanks to Michael Weber)
944 * bug fix: correctly handle name conflicts involving CL:NIL.
945 (thanks to Michael Weber)
946 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
947 conflicts arising from USEing package with conflicting symbols
948 correctly. (thanks to Michael Weber)
950 changes in sbcl-1.0.19 relative to 1.0.18:
951 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
952 warnings that go otherwise unhandled will be muffled if they are
953 of the type that's the value of this variable.
954 * optimization: stack allocation is slightly more efficient on x86
956 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
957 where a raw slot always is initialized using the initform whose
958 type is not know sufficiently well a compile-time are now compiled
959 correctly. (reported by John Morrison)
960 * bug fix: compiler no longer makes erronous assumptions in the
961 presence of non-foldable SATISFIES types.
962 * bug fix: stack analysis missed cleanups of dynamic-extent
963 arguments in non-let-converted calls to local functions.
964 * improvements to the Windows port:
965 ** adjusted address spaces for building on both Win32 and
966 Win64. (thanks for John Connors)
967 * fixed some bugs revealed by Paul Dietz' test suite:
968 ** interval arithmetic during type derivation used inexact integer
969 to single-float coercions.
970 ** arithmetic operations involving large integers and single
971 floats give the same results in compiled and interpreted code.
972 ** deriving the result type of COERCE no longer signals an error
973 if the derived type of the second argument is a MEMBER type
974 containing invalid type specifiers.
975 ** ADJOIN with constant NIL as second argument works correctly.
976 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
978 changes in sbcl-1.0.18 relative to 1.0.17:
979 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
980 profiles only the current thread.
981 * minor incompatible change: changes to SYMBOL-VALUE of constants
982 defined with DEFCONSTANT now signal an error.
983 * enhancement: SB-SPROF now has support for wallclock profiling,
984 and is also able to profile specific threads. REPORT output
985 has also additional sorting options.
986 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
988 * optimization: structure allocation has been improved
989 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
990 ** out of line constructors are ~10% faster.
991 ** inline constructors are ~15% faster.
992 ** inline constructors are capable of dynamic extent allocation
993 (generally on x86 and x86-64, in some cases on other platforms
995 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
997 * optimization: file compiler is now able to coalesce non-circular
998 lists, non-base strings, and bit-vectors. Additionally, constants
999 are never referenced through SYMBOL-VALUE at runtime.
1000 * optimization: code defining methods on PRINT-OBJECT (and other
1001 generic functions in the COMMON-LISP package) now loads faster.
1002 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1004 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1005 fasl is now deleted. (reported by Attila Lendvai)
1006 * bug fix: READ-LINE always returned NIL for the last line in files.
1007 (reported by Yoshinori Tahara)
1008 * bug fix: more accurate disassembly annotations of foreign function
1009 calls. (thanks to Andy Hefner)
1010 * bug fix: trimming non-simple strings and non-string string
1011 designators when the there is nothing to trim works properly.
1012 (thanks to James Knight)
1013 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1014 (thanks to Travis Cross)
1015 * fixed some bugs revealed by Paul Dietz' test suite:
1016 ** NIL is a valid function name (regression at 1.0.13.38)
1017 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1018 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1019 fill pointers properly (regression at 1.0.12.23)
1020 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1021 displacement indices properly (regression at 1.0.12.23)
1023 changes in sbcl-1.0.17 relative to 1.0.16:
1024 * temporary regression: user code can no longer allocate closure
1025 variable storage on stack, due to bug 419 without explicitly
1026 requesting it. Please consult sbcl-devel for advice if you need to
1027 use this feature in the meanwhile.
1028 * new feature: runtime argument --control-stack-size can be used to
1029 adjust thread default control stack size.
1030 * enhancement: improved TIME output
1031 ** all times are reported using the measured accuracy (milliseconds
1032 for real and GC times, microseconds for everything else.)
1033 ** processor cycle counts on x86 and x86-64.
1034 ** interpreted forms are counted for both evaluator modes.
1035 ** number of lambdas converted by the compiler is reported.
1036 ** CPU percentage report (computed from real and total run time.)
1037 ** more comprehensive run time reporting, using a condenced format
1038 ** interperted form, lambda, and page fault counts are omitted
1040 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1042 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1043 * optimization: two argument forms of LAST are upto ~10% faster
1044 in normal SPEED policies.
1045 * optimization: NCONC no longer needs to heap cons its &REST list
1046 in normal SPEED policies.
1047 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1048 to Sidney Markowitz)
1049 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1050 regression since 1.0.9.1. (thanks to Eric Marsden)
1051 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1052 since 1.0.15.36. (thanks to Paul Khuong)
1053 * bug fix: LAST when always returned the whole list when given a bignum
1054 as the second argument.
1055 * bug fix: dynamic extent allocation of nested lists and vectors
1056 could leak to otherwise accessible parts.
1057 * bug fix: invalid optimization of heap-allocated alien variable
1059 * bug fix: fasl header checking is less vulnerable to different
1060 platform word lengths.
1061 * bug fix: more correct assembler syntax for GNU binutils
1062 2.18.50.0.4 support. (thanks to Marijn Schouten)
1063 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1065 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1066 declarations) successfully. (reported by Attila Lendvai)
1068 changes in sbcl-1.0.16 relative to 1.0.15:
1069 * minor incompatible change: revert the changes to sb-posix's error
1070 signaling added in 1.0.14.
1071 * minor incompatible change: change PROBE-FILE back to returning
1072 NIL whenever we can't get a truename, as was the case before 1.0.14.
1073 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1074 inherits from ERROR instead of just CONDITION.
1075 * new feature: SB-INTROSPECT can provide source locations for instances
1076 as well. (thanks to Tobias Rittweiler)
1077 * optimization: binding special variables now generates smaller code
1078 on threaded platforms.
1079 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1080 and cases where no :TEST is given but the compiler can infer that
1081 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1082 * optimization: better LOGNOT on fixnums.
1083 * optimization: modular arithmetic for a particular requested width
1084 is implemented using a tagged representation unless a better
1085 representation is available.
1086 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1087 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1088 for wellformedness and returns a specialized vector. (reported by
1089 Francois-Rene Rideau)
1090 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1091 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1092 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1093 unscheduling timer at the same time as another timer fires.
1094 * bug fix: don't reschedule timers for dead threads.
1095 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1096 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1097 bogus errors if select() was interrupted.
1098 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1100 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1101 * enhancement: cleaner backtraces for interactive interrupts, as
1102 well as other cases where the interesting frames used to be
1103 obscured by interrupt handling frames.
1104 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1105 now supported, and tracing a whole package using (TRACE "FOO") now
1106 traces SETF-functions as well.
1107 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1108 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1109 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1110 * unreadably printed representation of hash-tables now includes
1112 * bug fix: partially fixed #188: type propagation from assignments
1113 is now more efficient.
1114 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1115 'DOUBLE-FLOAT) are not flushable.
1116 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1117 full address of the object, and none of the tag bits.
1118 * bug fix: readably printing hash-tables now respects other printer
1119 control variables. (reported by Cedric St-Jean)
1120 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1121 keyword with MAKE-HASH-TABLE.
1122 * bug fix: export SB-POSIX:MKSTEMP.
1123 * bug fix: SORT was not interrupt safe.
1124 * bug fix: XREF accounts for the last node of each basic-block as
1126 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1127 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1128 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1129 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1130 create obsolete instances in the case of redefinition or
1131 obsoletion of a superclass. (thanks to Andy Hefner)
1132 * bug fix: Support for the Alpha architecture has been revived; it had
1133 suffered somewhat from lack of maintenance since sbcl-1.0.
1134 * improvements to the Windows port:
1135 ** The system detects the codepage to use at startup, instead of
1136 using the value from the saved core. (thanks to Kei Suzuki)
1138 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1139 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1140 (see documentation for details.)
1141 * revived support for OpenBSD (contributed by Josh Elsasser)
1142 * partially fixed bug #108: ROOM no longer suffers from occasional
1143 (AVER (SAP= CURRENT END)) failures.
1144 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1145 bodies no longer cause a WARNING to be signalled. (reported by
1147 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1148 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1149 the bug in TRUNCATE.) (reported by Michael Weber)
1150 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1151 no samples. (reported by Andy Hefner)
1152 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1153 no longer appear as (NIL ...) frames in backtraces.
1154 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1155 is now actually exported from SB-EXT as documented. (reported by
1157 * bug fix: sb-aclrepl now correctly understands how to inspect
1158 single-floats on 64-bit platforms where single-floats are not boxed.
1159 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1160 yet been finalized. (reported by Levente Meszaros)
1161 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1162 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1163 SBCL-specific optimize qualities.
1165 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1166 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1167 an executable in the search path, and does so in the child
1168 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1169 been removed; it can be found in the CVS history, for somebody who
1170 needs that search behavior (see the manual).
1171 * minor incompatible change: compiler policy re. weakening type
1172 checks has changed: now type checks are weakened only if SAFETY < 2
1174 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1175 unparsing of directory pathnames as files. Analogously,
1176 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1177 filename to parse into a directory pathname.
1178 * enhancement: implicit generic function creation now signals a
1179 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1180 users can bind handlers for and muffle around calls to LOAD.
1181 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1182 to be used (using the default stream external format), and allows
1183 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1184 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1185 strings and vectors whose element-type or simplicity is not fully
1186 known at compile-time.
1187 * optimization: STRING-TRIM and related functions no longer allocate
1188 a new string when no trimming needs to be performed. These functions
1189 are also faster than before when the input string has been declared
1191 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1192 * optimization: READ-LINE is significantly faster for files containing
1194 * optimization: non-open coded uses of character comparison operators
1195 (e.g. char=) no longer cons when called with more than one parameter
1196 on platforms supporting dynamic-extent allocation.
1197 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1198 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1199 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1201 * bug fix: some sequence functions elided bounds checking when
1203 * bug fix: too liberal weakening of union-type checks when SPEED >
1205 * bug fix: more bogus fixnum declarations in ROOM implementation
1208 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1209 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1210 :SYNCHRONIZED argument, which makes the hash-table safe for
1211 concurrent accesses (but not iteration.) See also:
1212 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1213 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1214 * optimization: CONCATENATE on strings is an order of magnitude faster
1215 in code compiled with (> SPEED SPACE).
1216 * optimization: SUBSEQ is ~50% faster on lists.
1217 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1218 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1219 END is smaller then START.
1220 * bug fix: SB-PROFILE will no longer report extra consing for nested
1221 calls to profiled functions.
1222 * bug fix: ROOM implementation had bogus fixnum declarations which
1223 could cause type-errors when calling ROOM on large images.
1224 * bug fix: if file compilation is aborted, the partial fasl is now
1225 deleted, and COMPILE-FILE returns NIL as the primary value.
1226 * bug fix: number of thread safety issues relating to SBCL's internal
1227 hash-table usage have been fixed.
1228 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1229 be returned from its body when the values were being returned
1230 using unknown-values return convection and the W-P-O was wrapped
1231 inside an UNWIND-PROTECT.
1232 * bug fix: sb-posix should now compile again under Windows, enabling
1233 slime to work again.
1235 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1236 * incompatible change: hash-table accessor functions are no longer
1237 automatically protected by locks. Concurrent accesses on the same hash-table
1238 from multiple threads can give inconsistent results or even corrupt the
1239 hash-table completely. Multi-threaded applications should do their own
1240 locking at the correct granularity. In the current implementation it is
1241 still safe to have multiple readers access the same table, but it's not
1242 guaranteed that this property will be maintained in future releases.
1243 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1244 and will signal an error at runtime.
1245 * enhancement: SB-THREAD package now exports a semaphore interface.
1246 * enhancement: CONS can now stack-allocate on x86 and
1247 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1249 * enhancement: nested lists can now be stack allocated on
1250 platforms providing stack allocation support.
1251 * enhancement: dynamic-extent support has been extended to support
1252 cases where there are multiple possible sources for the stack
1254 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1255 if the mutex is uncontested on Linux.
1256 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1257 as specified by the CLHS. (thanks to Tobias Rittweiler)
1258 * bug fix: NaN comparison now works on x86-64.
1259 * bug fix: CLOSE :ABORT T on a stream with pending output now
1261 * bug fix: instances of non-standard metaclasses using standard
1262 instance structure protocol sometimes missed the slot type checks
1264 * bug fix: known functions can be inlined in high-debug code.
1266 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1267 * minor incompatible change: the MSI installer on Windows no longer
1268 associates .lisp and .fasl files with the installed SBCL.
1269 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1270 on Windows. (thanks to Luis Oliviera)
1271 * new feature: SB-CLTL2 contrib module now implements
1272 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1273 * optimization: scavenging weak pointers is now more efficient,
1274 requiring O(1) instead of O(N) per weak pointer to identify
1275 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1276 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1277 method bodies using constant slot-names when the first argument is
1278 a specializer parameter for the method.
1279 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1280 names, when the class of the instance is a direct instance
1281 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1282 as slow as the constant slot-name case.)
1283 * optimization: member type construction is now O(N) instead
1285 * optimization: UNION and NUNION are now O(N+M) for large
1286 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1288 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1289 now more readable in environments like Slime which display it.
1290 (thanks to Tobias C. Rittweiler)
1291 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1292 was able to infer the correct argument type for the object on which
1293 the CAS operation was being performed.
1294 * bug fix: copy propagation interfered with parallel assignment
1295 semantics in local calls. (reported by Paul Khuong)
1296 * bug fix: the signed modular fixnum shift compiled to wrong code on
1297 x86 and x86-64. (spotted by a slight modification to some of
1300 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1301 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1302 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1303 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1305 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1306 and generic function now print the object identity for anonymous
1307 instances. (thanks to Attila Lendvai)
1308 * enhancement: as an extension to MOP, SBCL now supports SETF of
1309 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1310 (thanks to Attila Lendvai)
1311 * enhancement: sb-cover has an alternate annotation mode which puts
1312 the form annotations at the car of the form, instead of annotating
1313 it completely. The benefit of this mode is that it shows better
1314 which forms were instrumented by the compiler.
1315 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1316 by printer control variables. (reported by Dan Corkill)
1317 * bug fix: system leaked memory when delayed output was performed by
1318 the OS in smaller chunks then expected. (thanks to David Smith)
1319 * bug fix: system leaked memory when file streams were not closed
1321 * bug fix: large objects written to slow streams that were modified
1322 after the write could end up with the modified state written to
1323 the underlying file descriptor.
1324 * bug fix: multiple threads operating in parallel on the same stream
1325 could cause buffer-overflows.
1326 * bug fix: source location information is stored correctly
1327 (broken since 1.0.6). This bug would generally show up as the
1328 Slime debugger highlighting the wrong form when the sldb-show-source
1330 * bug fix: Branch forms are again annotated as branches in the sb-cover
1332 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1333 on x86-64. (reported by Gregory Vanuxem)
1334 * bug fix: EQUALP could return wrong results for structures with raw
1335 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1336 word). (reported by Vjacheslav Fyodorov)
1337 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1340 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1341 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1342 atomic compare-and-swap operations on threaded platforms.
1343 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1344 allows assigning a global minimum value to optimization qualities
1345 (overriding proclamations and declarations).
1346 * enhancement: closed over variables can be stack-allocated on x86
1348 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1350 * optimization: slot definition lookup is now O(1). This speeds up
1351 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1352 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1353 * optimization: ASSOC and MEMBER can now be open-coded for all
1354 combinations of keyword arguments when second argument is constant
1355 and SPEED >= SPACE. In other cases a specialized version is
1357 * bug fix: using obsoleted structure instances with TYPEP and
1358 generic functions now signals a sensible error.
1359 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1360 (reported by Kristoffer Kvello)
1361 * bug fix: backtrace construction is now more careful when making
1362 lisp-objects from pointers on the stack, to avoid creating bogus
1363 objects that can be seen by the GC.
1364 * bug fix: defaulting of values in contexts expecting more than 7
1365 variables now works on x86-64. (reported by Christopher Laux)
1366 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1368 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1369 as the property-list of a symbol.
1370 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1371 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1372 situations requested, are once again file-compileable. (reported
1375 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1376 * MOP improvement: support for user-defined subclasses of
1377 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1378 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1379 the expansion of DEFMETHOD, is responsible for generating a form
1380 which creates a list of specializers when evaluated. Additional
1381 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1382 debugging and introspective support.
1383 * minor incompatible change: the (unsupported) spinlock interface
1384 has changed: free spinlock now has the value NIL, and a held spinlock
1385 has the owning thread as its value.
1386 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1387 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1389 * enhancement: name of a socket-stream is now "a socket" instead of
1390 "a constant string".
1391 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1392 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1393 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1394 for generic functions. (Thanks to Tobias C. Rittweiler)
1395 * optimization: bignum printing speed has been improved by 20-40%
1396 (depending on the bignum size.)
1397 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1399 * bug fix: the cache used by the CLOS to store precomputed effective
1400 methods, slot offsets, and constant return values is now thread and
1402 * bug fix: generic function dispatch function updating is now thread
1403 and interrupt safe (in the sense that the known issues have been
1405 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1406 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1407 * bug fix: asdf systems with dependencies to the SB-POSIX or
1408 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1409 * bug fix: interrupt safety of applicable method computation has been
1412 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1413 * new contrib: sb-cover, an experimental code coverage tool, is included
1414 as a contrib module.
1415 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1416 significantly faster.
1417 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1418 produce more efficient code on x86-64 if the compiler can determine
1419 that (+ INDEX <constant>) does not require a bounds check and FOO
1420 has an element type at least 8 bits wide.
1421 * enhancement: a new, experimental synchronous timeout facility is
1422 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1423 * enhancement: when a symbol name conflict error arises, the
1424 conflicting symbols are always printed with a package prefix.
1425 (thanks to Kevin Reid)
1426 * enhancement: stepping is now once again supported on the SPARC and
1427 MIPS platforms. (It is also now more likely to work on CheneyGC
1429 * enhancement: sb-sprof can now also track and report accurate call
1431 * bug fixes: the treatment of non-standard subclasses of
1432 SB-MOP:SPECIALIZER is more correct.
1433 * incompatible change: PURIFY no longer copies the data from the
1434 dynamic space into the static and read-only spaces on platforms
1435 that use the generational garbage collector
1436 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1438 * bug fix: GC race condition occasionally resulting in crashes with
1439 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1441 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1443 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1444 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1445 * bug fix: an asynchronous interrupt could previously leave the
1446 system running with GC inhibited.
1447 * bug fix: a DECLARE form evaluated at top-level now causes an error
1448 rather than silently (or verbosely) returning NIL.
1449 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1450 result in a error being signalled due to source form lookup errors.
1451 (reported by Peter Graves)
1453 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1454 * incompatible change: removed writer methods for host-ent-name,
1455 host-ent-addresses -- changing the values did not update the DNS
1457 * minor incompatible change: changed experimental JOIN-THREAD interface
1458 * documentation: the manual now lists reader and writer methods
1459 in class slot documentation sections. (thanks to Richard M Kreuter)
1460 * documentation: unwinding from asyncronous events has been
1461 documented as unsafe.
1462 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1463 in multithreaded application code.
1464 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1465 platforms. (thanks to James Anderson for the optimization hint)
1466 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1468 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1469 variants no longer cons.
1470 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1471 their NOT- variants no longer cons.
1472 * optimization: EQUAL hash tables no longer use SXHASH for objects
1473 of all data types, but instead use an EQL hash for types for which
1474 EQUAL is the same as EQL.
1475 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1476 are significantly faster.
1477 * optimization: new STRING-OUTPUT-STREAM implementation is much
1478 faster for large outputs and conses 30% less on average.
1479 * enhancement: XREF information is now collected for references made
1480 to global variables using SYMBOL-VALUE and a constant argument.
1481 * enhancement: SIGINT now causes a specific condition
1482 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1483 * bug fix: FILE-POSITION used to signal an error in some cases where
1484 ANSI requires it to return NIL.
1485 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1486 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1487 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1489 * bug fix: bad type declaration in the CLOS implementation has
1490 been fixed. (reported by James Anderson)
1491 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1492 (thanks to Lutz Euler)
1493 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1494 required by the CLHS. (reported by Samium Gromoff)
1495 * bug fix: dead unbound variable references now signal an error.
1496 (reported by Marco Monteiro)
1497 * bug fix: / with an unused value was being deleted in safe code.
1498 (thanks to Marco Monteiro and Kevin Reid)
1499 * bug fix: number of characters that can be written onto a single
1500 line in a file is unlimited.
1501 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1502 been fixed by inhibiting interrupts for when GC is disabled.
1503 * bug fix: some interrupt safety issues with GETHASH, (SETF
1504 GETHASH), CLRHASH and REMHASH have been fixed.
1505 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1506 specifier no longer causes infinite recursion.
1507 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1508 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1509 * bug fix: an &environment argument with the correct variable information
1510 is passed to macros that are expanded during byte compilation.
1511 (reported by Samium Gromoff)
1512 * bug fix: a logic error was causing the hash function for bignums to
1513 have excessive amounts of collisions. (reported by Faré Rideau)
1514 * bug fix: modifying the contents of an array could change the return
1515 value of SXHASH on that array, which is only allowed for strings
1516 and bit vectors. (bug introduced in 0.9.16)
1517 * improvement: the x86-64/darwin port now passes all tests (except
1518 for the debugger tests) but should still be considered
1519 experimental until this is fixed.
1520 * improvement: a style-warning is signaled for CASE (etc) clauses with
1521 duplicate keys. (thanks to Kevin Reid)
1522 * improvement: macos/x86 and macos/x86-64 now use mach exception
1523 handlers for dealing with illegal instructions (for trapping and
1524 error handling) and memory protection violations (for GC).
1526 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1527 * new platform: experimental support for x86-64/darwin (MacOS).
1528 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1529 and getnameinfo sockets functions are used instead of gethostbyaddr
1530 and gethostbyname, on platforms where the newer functions are available.
1531 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1533 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1534 don't print the startup banner, but behave as if --noinform was passed
1535 as a command line argument. (thanks to Kevin Reid)
1536 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1537 * optimization: code using alien values with undeclared types is much faster.
1538 * optimization: the compiler is now able to open code SEARCH in more cases.
1539 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1540 * bug fix: using standardized COMMON-LISP special variables as loop
1541 variables no longer signals bogus package lock violations. (reported
1543 * bug fix: declaring local loop variables to be of a range-limited type
1544 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1545 (reported by Andras Simon)
1546 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1547 bugs remain on x86-64.)
1548 * bug fix: the #= and ## reader macros now interact reasonably with
1549 funcallable instances.
1550 * bug fix: type-checks for function arguments were compiled using the
1551 compiler policy settings of the wrong lexical environment (in 1.0.2
1553 * bug fix: SHADOW accepts characters as string designators, as required
1554 by the spec (thanks to Eric Marsden)
1555 * bug fix: fixed GC safety issues when foreign functions are called with
1556 non-base strings as arguments
1557 * bug fix: more consistent error output for fatal-compiler-warnings, like
1559 * bug fix: functions with proper names were showing up as NIL in
1560 backtraces (reported by Edi Weitz, regression in 1.0.2)
1562 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1563 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1564 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1565 produce more efficient code on the x86 if the compiler can determine
1566 that (+ INDEX <constant>) does not require a bounds check and FOO
1567 has an element type at least 8 bits wide.
1568 * bug fix: references to undefined variables are handled the same way
1569 in toplevel forms as in the normal compiler
1570 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1572 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1573 (thanks to Jon Buller)
1574 * improvement: faster compilation times for complex functions
1575 * improvement: added readlink support to SB-POSIX (thanks to Richard
1578 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1579 * improvement: experimental support for mach exception handling on
1580 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1582 * improvement: support for GBK external format.
1583 (thanks to Chun Tian (binghe))
1584 * improvement: the debugger now displays variables that have been closed
1585 over, in code compiled with (DEBUG 2) or higher
1586 * improvement: support for executable cores on NetBSD (thanks to
1588 * new feature: added a RESTART-FRAME debugger command
1589 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1590 be used to provide an implementation for FILE-POSITION on Gray streams
1591 (thanks to Eric Marsden)
1592 * new feature: add syslog, openlog and closelog support to SB-POSIX
1593 (thanks to Richard Kreuter)
1594 * optimization: the function call overhead in code compiled with
1595 a high DEBUG optimization setting is significantly
1596 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1597 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1598 (thanks to Tony Martinez)
1599 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1600 evaluated once (reported by Kevin Reid)
1601 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1602 works again (thanks to Kilian Sprotte)
1603 * bug fix: an error is signaled for tagbodies with duplicate tags
1604 (thanks to Stephen Wilson)
1605 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1606 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1607 stack frames from alien callbacks.
1608 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1609 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1610 65k pages (thanks to David Woodhouse)
1611 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1613 changes in sbcl-1.0.1 relative to sbcl-1.0:
1614 * new platform: FreeBSD/x86-64, including support for threading.
1615 * new feature: the compiler stores cross-referencing information
1616 about function calls (who-calls), macroexpansion (who-macroexpands)
1617 and special variables (who-binds, who-sets, who-references) for code
1618 compiled with (< SPACE 3). This information is available through the
1619 sb-introspect contrib.
1620 * new feature: users may subclass SEQUENCE, and have instances of
1621 these classes interoperate with standard Common Lisp functions if
1622 a number of methods are defined. (This feature is experimental
1623 and the interface subject to change based on feedback from SBCL
1624 users and the general community)
1625 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1626 x86/x86-64, rather than the previous fixed depth of 8
1627 * improvement: another pthread back-end of mutex "pthread-futex".
1628 * bug fix: non-ascii command-line arguments are processed correctly
1629 (thanks to Yaroslav Kavenchuk)
1630 * bug fix: non-required arguments were not passed correctly when a method
1631 defined using DEFMETHOD was called from a mop-generated method using
1632 CALL-NEXT-METHOD (reported by Pascal Costanza)
1633 * bug fix: recursion is now permitted in accessors through
1634 SLOT-UNBOUND. (reported by Pascal Costanza)
1635 * bug fix: an error was signaled at startup if the HOME environment
1636 variable was defined, but had an empty value (reported by Peter Van Eynde)
1637 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1638 signal a PROGRAM-ERROR, not a BUG.
1639 * bug fix: SB-POSIX:READDIR works when built with large file support.
1640 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1642 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1643 for better automatic indentation support. (thanks to Matt Pillsbury)
1644 * optimization: loading generic functions no longer takes O(n^2) time,
1645 proportional to the amount of methods in the generic function
1646 (reported by Todd Sabin and Jeremy Brown)
1647 * optimization: the FIND and POSITION family of sequence functions
1648 are significantly faster on arrays whose element types have been
1650 * improvements to the Windows port:
1651 ** Intermittent heap corruption problems have been fixed. (thanks
1652 to Alastair Bridgewater)
1653 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1655 ** Lisp is able to unwind foreign exception frames from alien
1656 callbacks. (thanks to Alastair Bridgewater)
1658 changes in sbcl-1.0 relative to sbcl-0.9.18:
1659 * improvement: experimental support for threading on FreeBSD/x86.
1660 (thanks to NIIMI Satoshi)
1661 * improvement: runtime option --dynamic-space-size can be used
1662 to set the size of the dynamic space reserved on startup.
1663 * improvement: floating point modes in effect are now saved in
1664 core, and restored on startup.
1665 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1666 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1667 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1668 threads are not running after *SAVE-HOOKS* have run.
1669 * improvement: writes to CLOS instance slots are type-checked in code
1670 compiled with (SAFETY 3)
1671 * improvement: floating-point exception handling on FreeBSD (thanks to
1673 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1674 (thanks to Zach Beane)
1675 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1677 * improvement: added support for the Shift-JIS external format.
1678 (contributed by NIIMI Satoshi)
1679 * improvement: callbacks are supported on Linux/PPC. (thanks to
1681 * bug fix: compiler bug triggered by a (non-standard) VALUES
1682 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1683 * bug fix: file compiler no longer confuses validated and already
1684 dumped structurres. (reported by Kaersten Poeck)
1685 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1686 fill-pointer signals a type-error as required. (thanks to
1688 * bug fix: disassemly of funcallable instances works.
1689 * bug fix: single stepping on PPC.
1690 * bug fix: fix thread-safety problems in the type system (generally
1691 manifesting as nonsensical errors like "STRING is a bad type specifier
1692 for sequences" or "The value 1 is not of type FIXNUM")
1693 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1694 (reported by Josip Gracin)
1695 * bug fix: an error is signaled for attempts to displace arrays with
1696 incompatible element types (thanks to Mario Mommer)
1697 * bug fix: more correct handling of wide characters in debug info
1698 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1699 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1700 and don't cause extra consing
1701 * optimization: MAP and MAP-INTO are significantly faster on vectors
1702 whose elements types have been declared.
1703 * Improvements to SB-SPROF:
1704 ** Support for allocation profiling
1705 ** Reduced profiling overhead, especially for long profiling runs
1706 * Improvements to the Windows port:
1707 ** floating point exceptions are now reported correctly.
1708 ** stack exhaustion detection works partially.
1709 ** more accurate GET-INTERNAL-REAL-TIME.
1710 ** better RUN-PROGRAM behaviour in case of errors in the child
1712 ** PROBE-FILE now simplifies pathnames correctly.
1713 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1714 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1715 1st 1970 (although time timezone data will be unreliable).
1716 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1718 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1719 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1720 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1722 * bug fix: two potential GC deadlocks affecting threaded builds.
1723 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1724 returns T (reported by Anton Kazennikov)
1725 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1726 with non-variable places
1727 * bug fix: remove a race condition in the setting of
1728 funcallable-instance functions, this should make threaded CLOS
1729 code more stable against memory faults.
1730 * bug fix: corruption of specials when unbinding is interrupted by an
1731 asynchronous unwind (reported by Hannu Koivisto)
1732 * improvement: the debugger will now also display local variables that
1733 are only used once, for code compiled with a DEBUG optimization quality
1736 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1737 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1738 * incompatible change: External-format support for FFI calls. The
1739 SB-ALIEN:C-STRING no longer implies an ASCII
1740 external-format. Instead the string is subject to external-format
1741 conversion. Additionally return values of type SB-ALIEN:C-STRING
1742 are by default of type (SIMPLE-ARRAY CHARACTER), not
1743 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1744 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1745 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1746 * incompatible change: SB-EXT package no longer contains the
1747 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1748 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1750 * incompatible change: the single-stepper is no longer available
1751 on Alpha, Mips and Sparc platforms.
1752 * minor incompatible change: the direct superclasses of
1753 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1754 not (STANDARD-OBJECT FUNCTION). This makes the
1755 class-precedence-lists of GENERIC-FUNCTION and
1756 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1758 * minor incompatible change: the default stream external format on
1759 non-unicode SBCL is no longer detected from the locale, but is always
1761 * new feature: Add a version of evaluator that uses an interpreter instead
1762 of the compiler. EVAL still uses the compiler by default, to switch it
1763 to use the interpreter, set the value of the variable
1764 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1765 * minor incompatible change: the single-stepper REPL has been merged
1766 with the normal debugger (see the "Stepping" heading of the debugger help
1767 for more details). The debugger command STEP will no longer switch
1768 to the single-stepper REPL.
1769 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1770 for a type now works.
1771 * bug fix: loading of default sysinit file works. (thanks to Leonid
1773 * bug fix: better detection of circularities in the file-compiler.
1774 (reported by Marco Monteiro)
1775 * bug fix: the CL pathname functions now work with files that have
1776 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1777 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1778 systems with Unix98 pty semantics.
1779 * bug fix: ASDF-INSTALL will now work with bsd tar.
1780 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1782 * bug fix: timers expiring in dead threads no longer cause a
1783 type-error (reported by Paul "Nonny Mouse").
1784 * bug fix: thanks to more lightweight single-stepper instrumentation,
1785 code compiled with (DEBUG 3) will compile and execute significantly faster,
1786 and will have more accurate type-inferencing than before
1787 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1788 whose bindings are modified
1789 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1790 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1791 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1792 CL:SOFTWARE-VERSION with proper version
1794 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1795 * feature: implemented the READER-METHOD-CLASS and
1796 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1797 as specified by AMOP.
1798 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1800 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1801 (thanks to Lutz Euler)
1802 * optimization: hashing of general arrays and vectors has been
1803 improved. (reported by Any Fingerhut)
1804 * enhancement: SB-INTROSPECT is now able to find definitions of
1805 profiled functions. (thanks to Troels Henriksen)
1806 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1807 as well, allowing compiler-macros for SETF-functions to expand.
1808 * enhancement: step-instrumentation no longer wraps known
1809 single-value functions with multiple-value context, allowing
1810 better type inference.
1811 * fixed bug #337: use of MAKE-METHOD in method combination now works
1812 even in the presence of user-defined method classes. (reported by
1813 Bruno Haible and Pascal Costanza)
1814 * fixed bug #339(c): if there are applicable methods not part of any
1815 long-form method-combination group, call INVALID-METHOD-ERROR.
1816 (reported by Bruno Haible)
1817 * fixed bug #361: the :FUNCTION initarg in the protocol for
1818 initialization of methods can now be used to override
1819 internally-produced optimized functions. (reported by Bruno
1821 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1822 system-provided lambda expression no longer cause warnings about
1823 unbound #:|pv-table| symbols.
1824 * bug fix: improved the handling of type declarations and the
1825 detection of violations for keyword arguments with non-constant
1827 * bug fix: potentially erronous calls to PATHNAME and
1828 MERGE-PATHNAMES were being flushed in some cases.
1829 (reported by Richard Kreuter)
1830 * bug fix: compiled calls to TYPEP were mishandling obsolete
1831 instances. (reported by James Bielman and Attila Lendvai)
1832 * bug fix: format strings with ~> without matching ~< no longer
1833 trigger an AVER, but signal an understandable error instead.
1834 (reported by Antonio Martinez)
1835 * bug fix: specifying an output-file without a pathname-type for
1836 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1837 of input-file instead of "fasl". (reported by Robert Dodier)
1838 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1839 (reported by James Y Knight).
1840 * bug fix: compiler-macros-function did not consider the environment
1841 argument for shadowing by local functions.
1842 * bug fix: compiler-macros expansion was inhibited by local INLINE
1844 * bug fix: inline expansions of known functions were subject to
1845 step-instrumentation in high debug policies, leading to problems
1846 with type-inference.
1847 * bug fix: compiler failed to differentiate between different CONS
1848 types in some cases.
1849 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1850 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1851 * bug fix: #368: incorrect use of expressed vs. upgraded array
1853 * bug fix: #306a: more precise unions of array types.
1854 * thread-safety improvements:
1855 ** CONDITION-WAIT could return early on Linux, if the thread was
1856 interrupted and subsequently continued with SIGCONT.
1857 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1859 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1860 * added support for the ucs-2 external format. (contributed by Ivan
1862 * minor incompatible change: pretty printing of objects of type
1863 (cons symbol) is, in the default pprint-dispatch-table, now
1864 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1866 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1867 called later in a class's lifetime, possibly as late as when the
1868 first instance of the class is created. Previously,
1869 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1870 class became finalizeable.
1871 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1872 for multibyte external-format streams. (thanks to "vbzoli")
1873 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1874 with :ALLOCATION :CLASS inherited from superclasses of the
1876 * fixed bug: anonymous classes can now be created using the :NAME
1877 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1878 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1879 * fixed bug: core-files saved with :EXECUTABLE T can again be
1880 executed when SBCL_HOME isn't set. (reported by James Knight)
1881 * fixed bug: toplevel LOCALLY forms with declarations could
1882 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1883 * fixed bug: printing from several different threads using different
1884 values of *print-case* could cause invalid output, due to
1885 some internal special variables of the printer not being bound
1886 thread-locally (reported by Max Mikhanosha)
1887 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1888 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1889 (reported by Pascal Costanza)
1890 * fixed bug: FINALIZE-INHERITANCE is called from
1891 REINITIALIZE-INSTANCE on classes when the class has previously
1892 been finalized, as required by AMOP.
1893 * minor code generation optimizations:
1894 ** better register allocation in CLOS dispatching functions
1895 ** overflow detection when coercing signed bytes to fixnums on x86-64
1896 ** is now implemented with one IMUL instruction instead of three shifts
1897 ** more efficient bit-vector access on x86 and x86-64
1898 ** more efficient access to raw structure slots on x86 and x86-64
1899 * fixed some bugs revealed by Paul Dietz' test suite:
1900 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1901 return its argument.
1903 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1904 * feature: thread support on Solaris/x86, and experimental thread support
1906 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1908 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1909 default method for SLOT-UNBOUND.
1910 * minor incompatible change: prevent the user from specializing the
1911 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1912 somewhat counter to the intent of the protocol, I (CSR) think, and
1913 additionally it just doesn't work in SBCL as currently
1914 implemented, thanks to optimizations (that are always valid for
1915 the other three SLOT-VALUEish functions, but not for the setter).
1916 * minor incompatible change: the :SB-LDB feature is now enabled by
1917 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1918 the low-level debugger.
1919 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1920 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1921 down to an SB-SYS:FD-STREAM, allowing direct communication in
1922 more cases. Temporary files and pipes are still used as a fallback
1924 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1925 on the non-reentrant C functions localtime(3) and gmtime(3).
1926 * bug fix: global optimization policy was not visible in LOCALLY and
1928 * bug fix: class objects can be used as specializers in methods.
1929 (reported by Pascal Costanza)
1930 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1931 with a type error. (reported by blitz_ on #lisp)
1932 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1933 failed with a type error. (reported by Pascal Bourguignon)
1934 * bug fix: merging pathnames against defaults with :DIRECTORY
1935 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1936 (reported by James Y Knight)
1937 * bug fix: saving large (>2GB) cores on x86-64 now works
1938 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1939 constant index and a (simple-array (signed-byte 32)) array
1940 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1941 error (patch by Robert J. Macomber)
1942 * feature: TIME now displays the amount of run-time spent in GC
1943 * bug fix: The debugger now does a better job of respecting
1944 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1945 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1946 workaround for bug 403.)
1947 * bug fix: floating point exception handling now works on FreeBSD
1948 (thanks to NIIMI Satoshi)
1949 * fixed some bugs revealed by Paul Dietz' test suite:
1950 ** MISC.641: LET-conversion were not supposed to work in late
1952 * improvements to the Win32/x86 port:
1953 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1954 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1956 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1957 * new feature: source path information is generated for macro-expansion
1958 errors for use in IDE's like Slime (thanks to Helmut Eller)
1959 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1960 * bug fix: compiler does not loop forever on an invalid type in
1962 * improvement: compilation of most CLOS applications is significantly
1964 * optimization: added a limited bytecode compiler for simple toplevel
1965 forms, speeding up compilation and FASL loading
1966 * bug fix: the statistical profiler now properly distinguishes anonymous
1969 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1970 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1971 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1972 into subclasses of the finalized class. Now user calls to
1973 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1974 system return before any subclasses are finalized.
1975 * minor incompatible change: The reader no longer ignores errors
1976 regarding non-existent packages in #+ and #- feature tests.
1977 * new feature: command line options --no-sysinit, --no-userinit to
1978 inhibit loading the corresponding init files
1979 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1980 for sending data through UDP sockets (thanks to François-René Rideau)
1981 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1982 error is signalled instead (thanks to François-René Rideau)
1983 * minor incompatible change: Error signalling behaviour of lexical
1984 operations violating package locks has changed slightly. Refer to
1985 documentation on package locks for details.
1986 * enhancement: EVAL can process IF-expressions without resorting to the
1988 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1989 constant-folded properly due to missing out-of-line functions.
1990 (reported by Mika Pihlajamäki)
1991 * bug fix: LISTEN sometimes returned T even in cases where no data was
1992 immediately available from the stream
1993 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1994 were reversed. (reported by Levente Mészáros)
1995 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1996 when given a vector displaced to an adjustable array. (reported
1998 * bug fix: derivation of float boundaries from numbers outside the
1999 appropriate float range (reported by John Wiseman)
2000 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2002 * bug fix: precomputing cache entries for generic functions with
2003 some subclasses of specializers as yet invalid does not attempt to
2004 fill a cache line with a negative offset. (reported by Levente
2006 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2007 allow condition class objects as arguments to DOCUMENTATION and
2008 (SETF DOCUMENTATION); only find and set documentation for
2009 structure names for the STRUCTURE doc-type. (suggested by Gary
2011 * improvements to the Win32/x86 port:
2012 ** (user-homedir-pathname) and default initialization file
2013 locations now know about the user's "Documents and Settings"
2014 directory (thanks to Yaroslav Kavenchuk)
2015 ** run-program is implemented (thanks to Mike Thomas)
2016 ** sockets support (thanks to Timothy Ritchey)
2017 ** better backtrace support (thanks to Alastair Bridgewater)
2018 ** sb-grovel supported
2019 ** asdf-install and sb-posix work somewhat
2020 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2021 * improvements to the Solaris/x86 port:
2022 ** works on Solaris 11/Solaris Express
2023 ** floating-point exception handling support
2024 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2025 * fixed some bugs revealed by Paul Dietz' test suite:
2026 ** REMOVE-METHOD returns its generic function argument even when
2027 the method is not one of the generic functions' methods.
2028 ** objects declared as MEMBER types can be admissible arguments to
2029 structure accessors.
2030 ** printing characters should simply be printed by the FORMAT ~:C
2032 ** compiler failure when compiling functions with hairy constant
2033 defaults for optional parameters.
2034 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2035 function, which is already optimized.
2037 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2038 * new platform: experimental support for SBCL x86/Darwin, including
2039 MacOS X 10.4.5 on Intel.
2040 * new feature: Unicode character names are now known to the system
2041 (through CHAR-NAME and NAME-CHAR).
2042 * new feature: the filesystem location of SBCL's core file is
2043 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2044 * minor incompatible change: the contrib modules SB-POSIX and
2045 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2046 this change is to make it easier to distribute
2047 location-independent binaries.
2048 * bug fix: as implied by AMOP, standardized classes no longer have
2049 slots named by external symbols of public packages. (reported by
2051 * optimization: calling functions via constant symbols -- as in
2052 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2053 via the function object as in (FUNCALL #'FOO).
2054 * optimization: on x86 and x86-64, the calling convention for the
2055 case of dealing with an unknown number of values has been altered
2056 to be friendlier to the prediction heuristics implemented,
2057 particularly with reference to CALL and RET pairing. (thanks to
2058 Alastair Bridgewater)
2059 * optimization: on x86, the code for access to thread-local symbol
2060 values and binding/unbinding of thread-local symbols is smaller.
2061 (thanks to Alastair Bridgewater)
2062 * enhancement: CONSTANTP is now able to determine constantness of
2063 more complex forms, including calls to constant-foldable standardized
2064 functions and some special forms beyond QUOTE.
2065 * fixed bug: occasional GC crashes on Solaris/x86
2066 * optimization: x86-64 supports stack allocation of results of simple
2067 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2068 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2069 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2070 (thanks to James Knight)
2071 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2072 by the standard (thanks to Stephen Compall)
2074 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2075 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2076 be used for bundling the runtime and the core file into one
2077 executable binary. This feature is not currently supported on all SBCL
2078 platforms. (thanks to James Bielman and NIIMI Satoshi)
2079 * new feature: a generational or ephemeral garbage collector is now
2080 the default on the PowerPC platform (both Linux and Darwin). The
2081 old Cheney (stop and copy) collector is a build-time option.
2082 (thanks to Cyrus Harmon, after Raymond Toy)
2083 * minor incompatible change: the method by which SBCL finds its
2084 contributed modules has changed; it no longer relies on symbolic
2085 links from an $SBCL_HOME/systems directory, but searches directly
2086 in the subdirectories of $SBCL_HOME.
2087 * enhancement: the dynamic heap size on the Linux/PPC platform is
2088 markedly larger, even using the older Cheney garbage collector.
2089 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2090 certain complicated string types. (reported by Gary King)
2091 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2092 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2093 * fixed bug: DOCUMENTATION on structures no longer signals an
2094 error if no structure type of the right name exists. (reported by
2096 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2097 applicable non-standard primary or :AROUND method on
2098 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2099 no longer cause unbound variable errors. (reported by Kevin Reid)
2100 * fixed bug: metacircle resolution in cases where methods have slots
2101 added before the slots from STANDARD-METHOD. (reported by Jean
2103 * fixed bug: the Power PC assembly code for calling into lisp
2104 sometimes computed its return address wrongly (depending on the
2105 15th bit of the address, fixed at link time). This used to
2106 manifest itself in a segmentation violation while building PCL.
2107 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2108 many others over the years)
2109 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2110 the stack pointer (treated as a signed integer) is negative.
2111 (thanks to Peter van Eynde)
2113 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2114 * new platform: experimental support for the Windows operating
2115 system has been added. (thanks to Alastair Bridgewater)
2116 * fixed several bugs in and robustified the PPC FFI (including
2117 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2118 * bug fix: allow non-simple string symbol names (reported by Paul
2120 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2122 * bug fix: saving a core corrupted callbacks on x86/x86-64
2123 * bug fix: closed a loophole in metacircularity detection and
2124 grounding in the PCL implementation of CLOS.
2125 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2126 (reported by tomppa on #lisp)
2127 * bug fix: clear the direction flag on Lisp -> C transitions, as
2128 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2129 (reported by Andrej Grozin and Hendrik Maryns)
2130 * optimization: major improvements to GC efficiency on GENCGC platforms
2131 * optimization: faster implementation of EQUAL
2132 * optimization: emit more efficient opcodes for some common
2133 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2134 * optimization: several other minor code-generation improvements on x86-64
2135 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2137 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2138 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2139 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2140 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2141 by ANSI as a generic function, and for consistency (SETF
2142 GENERIC-FUNCTION-NAME) is treated likewise.
2143 * fixed bug #233.b: make constraint propagation notice when a variable
2144 value is changed after it is referenced but before it is used
2145 * fixed bug #296: no more arbitrary behaviour from filenames with
2146 odd characters as --load arguments. (reported by Adam Warner)
2147 * fixed bug #390: :CHARACTER-SET pathname components now work as
2148 expected. (reported by Tim Daly Jr)
2149 * fixed bug #391: complicated :TYPE intersections in slot
2150 definitions no longer cause an error in PCL internals.
2151 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2152 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2153 returning the number of octets which would be written to the
2154 file-stream. (thanks to Robert J. Macomber)
2155 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2156 arguments to the internal stream functions. (thanks to David
2158 * bug fix: stack exhaustion is now handled on the x86/SunOS
2159 platform. (thanks to Daisuke Homma)
2160 * bug fix: more accurate ROOM results on GENCGC platforms
2161 * optimization: improved type inference for arithmetic-for
2162 index variables in LOOP
2163 * optimization: faster floating-point SQRT on x86-64
2164 * fixed some bugs revealed by Paul Dietz' test suite:
2165 ** DOCUMENTATION returns NIL instead of "" for method combinations
2166 that don't have a docstring
2168 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2169 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2170 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2171 therefore are not customizeable by user code (as seems to be at
2172 least permitted and maybe required by AMOP). As a consolation,
2173 however, the SBCL implementation of these functions now calls
2174 REINITIALIZE-INSTANCE as specified by AMOP.
2175 * bug fix: slot-definition documentation is propagated as per ANSI
2176 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2177 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2178 argument, as do eslotd initialization methods. (from Pascal
2179 Costanza's "Closer" project)
2180 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2181 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2183 * bug fix: it is now possible to have more than one subclass of
2184 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2185 (reported by Bruno Haible, Pascal Costanza and others)
2186 * bug fix: the dependent update protocol now works for generic
2187 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2188 and Pascal Costanza)
2189 * bug fix: condition-class instances corresponding to
2190 DEFINE-CONDITION forms are now created eagerly. (reported by
2191 Kalle Olavi Niemitalo on comp.lang.lisp)
2192 * bug fix: floating point printing is more accurate in some
2193 circumstances. (thanks to Simon Alexander)
2194 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2195 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2196 * bug fix: callbacks on OS X now preserve stack-alignment.
2197 (thanks to Cyrus Harmon)
2198 * enhancement: the x86-64 disassembler is much better at
2199 disassembling SSE instructions. (thanks to Lutz Euler)
2200 * enhancement: CHECK-TYPE on a variable now allows type-inference
2201 (thanks to Vincent Arkesteijn)
2202 * optimization: improved performance of EUC-JP external format.
2203 (thanks to NIIMI Satoshi)
2204 * optimization: performance improvements to IO on file streams of
2205 :ELEMENT-TYPE CHARACTER
2206 * optimization: much faster memory allocation on x86-64
2207 * optimization: faster garbage collections (latency and throughput)
2209 * optimization: faster bignum subtraction and division on x86 and x86-64
2210 (thanks to Lutz Euler)
2211 * optimization: more accurate type-inference for loops that use a
2212 floating point index variable or a negative step.
2214 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2215 * bug fix: add a workaround to SBCL looping infinitely at startup on
2216 Linux kernels with apparently buggy implementations of personality().
2217 (thanks to Svein Ove Aas)
2218 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2219 (thanks to David Lichteblau)
2220 * bug fix: local bindings shadow global symbol macros for
2221 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2222 * optimization: non-open coded uses of numeric comparison operators
2223 (e.g. >) no longer cons when called with more than one parameter
2224 on platforms supporting dynamic-extent allocation.
2225 * enhancement: saving cores with foreign code loaded is now supported
2226 on MIPS/Linux in addition to the previously supported platforms.
2227 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2228 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2229 * bug fix: division by zero in sb-sprof when no samples were collected
2230 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2231 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2232 (thanks to Alexander Kjeldaas)
2233 * new feature: ignoring the return values of destructive functions
2234 like NREVERSE signals a compile-time style-warning.
2235 (thanks to Kevin Reid)
2236 * new feature: the alignment of alien structure fields can be
2237 explicitly specified. (thanks to Cyrus Harmon)
2238 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2239 and dump core on SIGQUIT
2241 ** incompatible change: threads do not inherit values of specials
2242 from their parents (see manual)
2243 ** bug fix: threads stacks belonging to dead threads are freed by the
2244 next exiting thread, no need to gc to collect thread stacks anymore
2245 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2246 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2247 ** bug fix: dynamic variable and thread start related gc lossage
2248 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2250 * fixed some bugs revealed by Paul Dietz' test suite:
2251 ** SUBTYPEP is slightly more accurate on heinously complicated
2252 CONS types where some of the members have uncertain (in the
2253 NIL, NIL sense) type relationships to each other.
2255 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2256 no longer purified unless :PURIFY T is explicitly specified.
2257 ** Non-purified cores are significantly smaller than before
2259 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2260 * new feature: timers based on Zach Beane's excellent timer package
2261 * added support for the following external formats: koi8-u,
2262 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2263 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2264 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2265 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2266 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2267 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2268 * incompatible change: a threaded SBCL will no longer revert to
2269 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2270 * bug fix: interrupts are disabled until startup is complete; no
2271 more sigsegvs when receiving a signal to soon
2272 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2274 * bug fix: add a workaround for the memory randomization features in
2275 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2276 workaround will only be in effect on systems with the proc filesystem
2278 * bug fix: printing objects of type HASH-TABLE signals a
2279 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2281 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2282 have been running for over 50 days. (reported by Gilbert Baumann)
2283 * bug fix: the logic for getting names of functions gets less
2284 confused when confronded with alternate-metaclass
2285 funcallable-instances. (reported by Cyrus Harmon)
2286 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2287 consistent, even on internal alternate-metaclass objects.
2288 * bug fix: flush closure information collected by physical
2289 environment analysis prepass before the main pass. (bug reported
2291 * bug fix: compiler pack phase does not modify a hashtable, which is
2292 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2293 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2294 may be expanded. (reported by Alexander <malishev> on c.l.l)
2295 * bug fix: no more style-warnings when compiling code using LAST
2296 under high-SPEED low-SPACE settings. (reported by David Wallin
2298 * fixed some incompatibilities between SBCL's MOP and the MOP
2300 ** the METAOBJECT class is now implemented;
2301 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2302 STANDARD-OBJECT, as required;
2303 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2304 now compatible (as required by VALIDATE-SUPERCLASS); there
2305 remains a consistency requirement over the presence or absence
2306 of the FUNCTION class in the superclass list of finalized
2307 classes; see the manual for more details;
2308 ** the :AROUND method for COMPUTE-SLOTS on
2309 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2310 requested slot ordering.
2312 ** bug fix: parent thread now can be gc'ed even with a live
2314 ** bug fix: binding a special with PROGV to no value is not
2315 the same as that symbol not having been bound (thanks to
2317 ** bug fix: binding specials is thread safe (thanks to
2319 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2320 and SB-SPROF do not die with 'no handler for signal XX in
2321 interrupt_handle_now(..)' anymore
2322 ** bug fix: WITH-TIMEOUT works with multiple running threads
2323 * fixed some bugs revealed by Paul Dietz' test suite:
2324 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2325 the :method-class keyword argument.
2327 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2328 * new port: the Solaris operating system on x86 processors is now
2329 mostly supported, though some rough edges in the environment
2330 remain. (thanks to Daisuke Homma)
2331 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2332 space for its heap. (thanks to Thiemo Seufer)
2333 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2334 closures. (thanks to Thiemo Seufer)
2335 * minor incompatible change: eof selects abort in the debugger.
2336 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2337 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2339 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2340 deprecated, and will go away in a future revision of SBCL.
2341 * minor incompatible change: GC-ON and GC-OFF are no longer
2342 implemented with a counter, it does not matter how many times gc
2343 is switched on or off
2344 * bug fix: discriminating functions for generic function classes
2345 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2346 make invalid assumptions about method precedence order. (reported
2348 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2349 platforms. (thanks to Thiemo Seufer)
2350 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2351 * bug fix: correct pathname printing with printer escaping is on.
2352 (thanks to Kevin Reid)
2353 * bug fix: complex VOP definitions in "user-space" no longer trigger
2354 package locks. (reported by Zach Beane)
2355 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2356 for funcallable-instance functions, and is no different from
2358 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2359 characters in the current readtable. (reported by Nicholas Neuss)
2360 * bug fix: SUBTYPEP on various CONS types returns more a more
2361 accurate acknowledgment of its certainty.
2362 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2363 lists in some cases. This partially fixes bug 384.
2364 * flush all standard streams before prompting in the REPL and the
2366 * bug fix: signal handling and triggering gc do not conflict
2367 directly anymore, in particular a high frequency sb-sprof does
2368 not prevent gc from running
2369 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2370 approximation for timezone and DST information between the
2371 universal time epoch and the smallest negative 32-bit time_t.
2372 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2373 year 1899 so long as the encoded time is non-negative.
2374 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2375 the correct answer for non-constant rotate amounts when performing
2376 an inline 32-bit rotation.
2378 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2379 there is only one thread in the session
2380 ** bug fix: memory leak for streams created in one thread and
2381 written to in another
2382 ** bug fix: lockup when compiled with gcc4
2383 ** bug fix: race that allows the gc to be triggered when gc is
2385 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2386 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2388 ** bug fix: finished threads are gc'ed properly
2389 * fixed some bugs revealed by Paul Dietz' test suite:
2390 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2391 has arguments with a different set of applicable methods from
2392 the orignal arguments.
2393 ** The type error thrown by MAP now has a correct expected-type
2395 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2396 name a compiled function.
2397 ** Three MISC tests where a large bignum was improperly coerced to
2398 a float that couldn't represent that bignum during type
2399 derivation were fixed.
2400 ** SUBTYPEP can now handle types involving the negation of a
2401 list-form FUNCTION type.
2402 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2403 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2404 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2406 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2407 * New feature: Experimental support for bivalent streams: streams
2408 opened with :element-type :default now allow character and binary
2409 (unsigned-byte 8) I/O
2410 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2411 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2413 * bug fix: no more highly sporadic "couldn't check whether ~S is
2414 readable" when reading a stream and an interrupt hits in the middle
2415 of a select system call
2416 * compiler better recognizes complex arrays (reported by Eduardo
2418 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2419 for variables on SBCL built with linkage-tables. (reported by Luis
2421 * various error reporting improvements.
2422 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2423 (Thanks to Thiemo Seufer)
2424 * bug fix: nested reader invokations work correctly
2425 * bug fix: it is possible to have simultaneous references to foreign
2426 code and foreign data with the same name.
2428 ** added x86-64 support
2429 ** incompatible change: the threading api now works with thread
2430 objects instead of thread ids
2431 ** bug fix: threads are protected from signals and interruption when
2432 starting up or going down
2433 ** bug fix: a race where an exiting thread could lose its stack to gc
2434 ** bug fix: don't halt on infinite error in threads if possible
2435 ** fixed numerous gc deadlocks introduced in the pthread merge
2436 ** bug fix: fixed thread safety issues in read and print
2437 ** bug fix: debugger doesn't hang on session lock if interrupted at
2438 an inappropriate moment
2439 ** bug fix: run-program is now thread safe(r)
2440 ** bug fix: inner with-recursive-lock no longer releases the mutex
2441 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2442 * fixed some bugs revealed by Paul Dietz' test suite:
2443 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2444 EXPECTED-TYPE slots filled.
2445 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2447 ** MAKE-CONDITION accepts classes as type-designators.
2448 ** COMPILE may never return NIL.
2449 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2450 range before calling Unix time functions
2452 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2453 * numerous signal handling fixes to increase stability
2454 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2455 * minor incompatible change: we now correctly canonize default
2456 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2457 as per the MOP, rather than the historical (INITARG INITFUNCTION
2458 INITFORM). (reported by Bruno Haible)
2459 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2460 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2461 for more information.
2462 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2463 pathname is a directory pathname.
2464 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2465 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2467 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2468 :METACLASS argument in addition to a class name. (reported by
2469 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2470 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2471 (reported by Bruno Haible; patch from Gerd Moellmann)
2472 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2474 * bug fix: more cleanups to the floating point exception handling on
2475 x86-64 (thanks to James Knight)
2476 * bug fix: the compiler does not try to constant fold calls of
2477 COERCE and BIT-* functions when they return freshly constructed
2478 objects. (reported by Nikodemus Siivola and Paul Dietz)
2479 * optimization: improved the MIPS versions of generic (in the
2480 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2481 * optimization: direct conversion of (unsigned-byte 32) to floats on
2482 the PowerPC platform.
2483 * optimization: structure instances with raw slots now use less
2484 memory, and probably show better memory locality. (thanks to
2486 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2487 are treated as requests for stack allocation on the x86-64,
2488 Alpha-32, PPC and SPARC platforms.
2489 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2490 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2491 (thanks to Tony Martinez)
2493 ** gcing a dead thread can no longer lead to lockups
2494 ** threads block signals until they are set up properly
2495 ** errno is no longer shared by threads
2496 ** interrupt-thread restores the eflags register on x86
2497 ** fixed some lockups due to gc/thread interaction
2498 * fixed some bugs revealed by Paul Dietz' test suite:
2499 ** invalid dotted lists no longer raise a read error when
2500 *READ-SUPPRESS* is T
2501 ** signal an error if a symbol that names a declaration is used
2502 as the name of a type, or vice versa
2503 ** allow using the (declare (typespec var*)) abbreviation for
2504 (declare (type typespec var*)) with all type specifiers
2505 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2506 ** always return NIL from PPRINT-POP when OBJECT is NIL
2507 ** don't signal errors when pretty-printing malformed LABELS,
2508 FLET or MACROLET forms
2509 ** declarations in a DOLIST body are also in scope for the
2511 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2513 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2516 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2517 * fixed cross-compiler leakages that prevented building a 32-bit
2518 target with a 64-bit host compiler.
2519 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2520 opened with :IF-EXISTS :OVERWRITE.
2521 * fixed bug 281: error for an invalid qualifier in a short-form method
2522 combination method is not signalled until the faulty method is called.
2523 * bug fix: iteration variable type inferrer failed to deal with open
2524 intervals. (reported by Alan Shields)
2525 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2526 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2527 or more runtime options were provided to the sbcl binary.
2528 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2529 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2530 * optimization: there's now a fast-path for fixnum arguments in the
2531 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2532 * optimization: the code generated on x86-64 is more compact thanks
2533 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2534 * bug fix: floating-point exception handling now partly works on
2535 x86-64. (Thanks to James Knight)
2536 * improvement to the MIPS backend from Thiemo Seufer: C-style
2537 64-bit long long arguments and return values to alien functions
2539 * fixed some bugs revealed by Paul Dietz' test suite:
2540 ** the type-error signalled from WARN has a filled-in DATUM slot.
2541 ** the type-error required when a stream is not associated with
2542 a file has the stream as its datum.
2543 ** type-errors on single-floats on x86-64 no longer have
2544 :INVALID-OBJECT as the datum
2545 ** the type-errors signalled for invalid function names now have
2546 a correct expected type
2547 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2548 for structures defined with a :TYPE. Documentation strings for
2549 typed structures are no longer immediately discarded
2550 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2551 broadcast streams and synonym streams. FILE-LENGTH now also works
2552 on broadcast streams.
2554 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2555 * incompatible change: the --noprogrammer option, deprecated since
2556 version 0.7.5, has been removed. Please use the equivalent
2557 --disable-debugger option instead.
2558 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2560 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2561 inoperational for a while now) has been completely removed.
2562 * null lexical environments are now printed as #<NULL-LEXENV>,
2563 significantly reducing the amount of clutter in typical backtraces.
2564 * documentation on weak pointers, finalization, and after GC hooks
2565 has been added to the manual.
2566 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2567 as other specialized array types, is much faster. SUBSEQ and
2568 COPY-SEQ on such arrays have also been sped up.
2569 * optimization: EQL is now more efficient when at least other argument
2570 is known to be of type (OR FIXNUM (NOT NUMBER)).
2571 * fixed bug: the runtime is now less vulnerable to changes in the
2572 size of the SBCL object on OS X, and virtual memory is reserved for
2573 all spaces that need to be at a fixed address.
2574 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2575 * fixed bug: finalizers and after GC hooks that cause consing are now
2577 * fixed bug: compiler error messages and summaries are now printed to
2578 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2579 * fixed inference of the upper bound of an iteration variable.
2580 (reported by Rajat Datta).
2581 * fixed bug 211e: calling local functions with duplicated constant
2582 keyword argument no longer causes a bogus style warning about an
2584 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2585 ftype declaration to be disregarded. (reported by Dave Roberts)
2586 * fixed bug 373: caused by erronous compilation of references to alien
2587 variables in the runtime on ppc/darwin.
2588 * fixed bug 376: CONJUGATE type deriver.
2589 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2590 (reported by Baughn on #lisp)
2591 * a cross-compiler bug on non-x86 platforms has been identified and
2592 fixed. (thanks to Bruno Haible)
2593 * improvements to the MIPS runtime code for increased stability.
2594 (thanks to Thiemo Seufer)
2595 * increased the maximimum compact environment size to allow
2596 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2597 * partial workaround for bug 135: don't name the function we're
2598 calling for hairy cases of EVAL, so as not to accumulate one environment
2599 entry per call to EVAL. (reported by Kevin Reid)
2600 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2601 * optimization: type testing for non-vector arrays should be faster.
2602 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2604 * bug fix: setting 31st element of a bit vector to zero did not work
2606 * bug fix: redefining a class definition which failed due to a
2607 previous accessor / function clash now works (but see BUGS entry
2608 #380 for more problems in this area). (thanks to Zach Beane)
2609 * the long form of DEFINE-METHOD-COMBINATION disables method group
2610 checking when given a single method group with pattern *. (thanks
2612 * on x86 compiler supports stack allocation of results of simple
2613 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2614 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2615 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2616 * fixed some bugs related to Unicode integration:
2617 ** the restarts for recovering from input and output encoding
2618 errors only appear when there is in fact such an error to
2620 * fixed some bugs revealed by Paul Dietz' test suite:
2621 ** MISC.549 and similar: late transformation of unsafe type
2622 assertions into derived types caused unexpected code
2624 ** SCALE-FLOAT type deriver is less wrong.
2625 ** type derivers for EXP, LOG and similar functions compute result
2626 types for complex arguments better.
2627 ** (MISC.563) CONJUGATE type deriver works for very restricted
2629 ** out-of-line type testers for character strings are available.
2630 ** EQUAL compiler transform understands specialness of objects
2632 ** accessing double-floats stored on the stack now works on x86-64.
2633 ** debugger internals could sometimes create invalid lispobjs,
2634 resulting in GC crashes.
2635 ** MISC.548: type check weakening can convert required type into
2637 ** initialization forms for bindings are not in scope of free special
2640 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2641 * incompatible change: thread support for non-NPTL systems has
2642 been removed - locking is buggy and unreliable. A threaded
2643 SBCL build will now warn at startup and refuse to create
2644 new threads, unless futex support is detected in the kernel
2645 * incompatible change: the top level REPL now has only an ABORT
2646 restart associated with it, not TOPLEVEL and ABORT as it used to.
2647 TOP and TOPLEVEL are now available as debugger commands for
2648 returning to the top level.
2649 * incompatible change: forms evaluated in the REPL now use the
2650 global optimization policy.
2651 * incompatible change: user- and system-initialization files are
2652 no longer processed with LOAD, but by READ and EVAL; hence the
2653 global optimization policy, startup package, readtable, etc,
2655 * The .fasl file format number has been incremented because of
2656 various incompatible changes.
2657 * internal entry point details and argument counts no longer appear
2658 in backtraces unless explicitly requested by setting
2659 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2660 * built-in and standard functions no longer have names like "top
2661 level local call to FOO".
2662 * fixed bug 32: functions defined in non-null lexical environments
2663 now have more legible printed representation
2664 * fixed bug 33: functions defined in non-null lexical environemnts
2665 are now more amenable to inspection by INSPECT.
2666 * workaround for bug 354: XEPs no longer appear in backtraces unless
2667 explicitly requested.
2668 * fixed bug: receiving the signal which results from attempting to
2669 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2670 SIGBUS on other *BSDs) on architectures where the C stack is also
2671 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2672 to debugger confusion or wild instability. (reported by Cheuksan
2674 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2675 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2676 (reported by Lutz Euler)
2677 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2678 compiled code. (reported by Paul Dietz)
2679 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2680 specialized parameter to a method to something that is not TYPEP
2681 the specializer is now possible.
2682 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2683 face of package deletion.
2684 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2685 pathname. (reported by David Tolpin on c.l.l)
2686 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2687 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2688 STRING-STREAM and FILE-STREAM, respectively.
2689 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2690 than previously; in addition, its test suite is now run on build.
2691 (thanks to Luke Gorrie)
2692 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2693 * optimization: added a immediate representation for single-floats
2695 * fixed some bugs revealed by Paul Dietz' test suite:
2696 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2697 ** attempting to create a package with a colliding nickname causes
2698 correctable errors to be signalled.
2699 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2700 ** several x86-64 backend bugs related to sign-extension of immediate
2703 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2704 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2705 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2707 * fixed loading of multiply forward-referenced layouts.
2708 (thanks to Cheuksan Wang)
2709 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2710 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2711 (see COMPILE-FILE documentation for details of :PRINT option)
2712 * fixed bugs 19 and 317: fixed-format floating point printing is
2713 more accurate. This also fixes a bug reported by Adam Warner
2714 related to the ~@F format directive.
2715 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2717 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2718 dispatch table if the from-char is a dispatch macro character.
2719 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2720 by the wordsize no longer ignore the last word. (reported by Lutz
2722 * fixed bug in type checking of dynamic-extent variables. (reported
2724 * optimization: sequence traversal functions use their freedom to
2725 coerce function designators to functions.
2726 * optimization: code with many calls to CLOS methods specialized on
2727 CLOS classes has had redundant type checks removed.
2728 * optimization: added declarations to speed up operations that access
2729 the internal character database (for example STRING-UPCASE)
2730 * optimization: comparison operations between floats and sufficiently small
2731 fixnums no longer create extra rationals
2732 * fixed some bugs related to Unicode integration:
2733 ** portions of multibyte characters at the end of buffers for
2734 character-based file input are correctly transferred to the
2735 start of the buffer at the next read.
2736 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2737 passing it through to OPEN.
2738 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2739 argument given to internal calls to OPEN.
2740 ** the built-in comment readers (introduced by character sequences
2741 ";" and "#|") are more forgiving to encoding errors; they will
2742 STYLE-WARN and then attempt to resync the stream at a character
2743 boundary. (thanks to Teemu Kalvas)
2744 * fixed some bugs in the x86-64 port:
2745 ** Negative short int return values from c-calls are sign-extended
2747 ** The stack is aligned to 16-bytes for c-calls, as required by
2748 the ABI. (thanks to Cheuksan Wang)
2749 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2750 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2751 for enums. (thanks to Vincent Arkesteijn)
2752 ** Multiple small optimizations and bugfixes for floating point
2754 * fixed some bugs revealed by Paul Dietz' test suite:
2755 ** Space, Tab, Linefeed, Return and Page have the invalid
2756 secondary constituent character trait.
2757 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2759 ** WITH-INPUT-FROM-STRING should only update the index place on
2761 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2762 works more reliably.
2763 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2764 with one-dimensional arrays with fill pointers.
2765 ** TYPE-OF failed on a complex with an integer realpart and a
2767 ** compiler failure during type inference for the code of form
2768 (IF (EQL X (THE ...)) ...) (MISC.535).
2770 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2771 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2772 platform. The port supports 61-bit fixnums, large memory spaces
2773 and reloading shared object files.
2774 * enhancement: saving cores with foreign code loaded is now
2775 supported on ppc/Darwin in addition to the previously supported
2777 * enhancement: the statistical profiler now walks deeper into the
2778 call stack for more meaningful call-graphs and accrued time
2779 reports (x86/x86-64 only). It also now reports time spent in
2781 * enhancement: it is now possible to trace most individual methods
2782 of a generic function in addition to tracing the generic function
2784 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2786 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2787 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2788 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2789 produces an error. (thanks to Vincent Arkesteijn)
2790 * bug fix: NAMESTRING on pathnames with :WILD components in their
2791 directories works correctly. (thanks to Artem V. Andreev)
2792 * fixed bug 125: compiler preserves identity of closures. (reported
2794 * bug fixed: functions with &REST arguments sometimes failed with
2795 "Undefined function" when compiled with (DEBUG 3). (reported by
2797 * bug fix: overflow during compiling of setting element of a bit
2798 vector with constant index and value. (reported by Timmy Douglas)
2799 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2800 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2801 * on x86 compiler partially supports stack allocation of dynamic-extent
2803 * GO and RETURN-FROM do not check the extent of their exit points
2804 when compiled with SAFETY 0.
2805 * fixed some bugs related to Unicode integration:
2806 ** encoding and decoding errors are now much more robustly
2807 handled; it should now be possible to recover even from invalid
2808 input or output to the terminal. (thanks to Teemu Kalvas)
2809 ** provided a first cut at implementing STRING-TO-OCTETS and
2810 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2811 ** altered the SB-MD5 contributed module slightly, changing the
2812 interface just enough for it to be supportable for builds where
2813 lisp characters are not eight bits.
2814 * fixed some bugs revealed by Paul Dietz' test suite:
2815 ** the FORMATTER-generated functions for ~V[ conditionals require
2816 the correct number of arguments.
2817 ** READ-FROM-STRING returns the mandated second value when applied
2818 to displaced strings.
2819 ** the #\Rubout and #\Backspace characters are treated as invalid
2820 constituent characters by the tokenizer.
2822 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2823 * new feature: reloading changed shared object files with
2824 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2825 * new feature: references to foreign variables and functions
2826 can now be compiled and loaded before the corresponding shared
2827 object file is loaded, as long as the foreign definitions are
2828 available at runtime.
2829 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2830 supported. (thanks to Dan Debertin)
2831 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2832 just keywords. (thanks to Vincent Arkesteijn)
2833 * fixed bug #331: structure-class instances corresponding to
2834 DEFSTRUCT forms are now created eagerly.
2835 * fixed bug #345: backtraces from calls to undefined functions work
2836 on x86 as well. Related bug #61 is now also partially fixed on x86
2837 (backtraces from throws to unknown catch tags.)
2838 * bug fix: lambda-list parsing is now stricter vrt. order and number
2839 of lambda-list keywords.
2840 * bug fix: as specified by AMOP, an error is signalled if a
2841 class-option appears multiple times in a DEFCLASS form. (reported
2843 * bug fix: RANDOM can be compiled when the compiler derives the type
2844 of its numeric argument as a disjoint set of small integers.
2845 (reported by Paul Dietz)
2846 * bug fix: starting a core saved with shared objects loaded when
2847 those objects are not available no longer causes threaded SBCL to
2848 hang. (reported by Sean Ross)
2849 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2851 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2852 argument, which must always be NIL. (reported by Kalle Niemitalo)
2853 * bug fix: printing 1.0d+23 no longer results in an error.
2854 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2855 * bug fix: structure slot setters preserve evaluation order. (thanks
2857 * fixed some bugs related to Unicode integration:
2858 ** RUN-PROGRAM can allow its child to take input from a Lisp
2859 stream. (reported by Stefan Scholl)
2860 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2861 locales. (reported by Ken Causey)
2862 * fixed some bugs revealed by Paul Dietz' test suite:
2863 ** INCF, DECF and REMF evaluate their place form as specified in
2865 ** FORMATTER expands ~{ ~} iteration directives with V or #
2866 parameters correctly.
2867 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2868 consequent uses no arguments correctly.
2869 ** the system has a partial understanding of the (COMPLEX RATIO)
2871 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2874 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2875 * new feature: a build-time option (controlled by the :SB-UNICODE
2876 keyword feature, enabled by default) for building the system with
2877 support for the entire 21-bit character space defined by the
2879 * new feature: the system now has rudimentary external-format
2880 support; the primary user-visible change at this time is that
2881 characters with the high bit set (such as lower-case-e-acute) will
2882 print correctly to a terminal in a UTF-8 environment.
2883 * minor incompatible change: BASE-CHAR no longer names a class;
2884 however, CHARACTER continues to do so, as required by ANSI.
2885 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2886 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2887 has been moved to the SB-EXT package (temporarily re-exported from
2889 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2890 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2892 * fixed bug #351: better error-handlind and reporting for malformed
2894 * fixed bug #350: bignum-printing is now more memory-efficient,
2895 allowing printing of very large bignums, eg. (expt 2 10000000).
2896 (reported by Bruno Haible)
2897 * fixed bug #302: better primitive-type selection for intersection
2899 * fixed bug #308: non-graphic characters now all have names, as
2900 required. (reported by Bruno Haible)
2901 * bug fix: redefining a class with different superclasses now correctly
2902 removes it from the direct-subclasses of its previous superclasses.
2903 (reported by David Morse)
2904 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2905 new value now works. (reported by Bruno Haible)
2906 * bug fix: correct canonicalization of multiple non-standard slot
2907 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2908 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2909 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2910 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2911 now exists, an signals an error.
2912 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2913 during macroexpansion for non-iteration variables as well. (reported
2914 by Bruno Haible for CMUCL)
2915 * bug fix: Cyclic structures and unprintable objects in compiler
2916 messages no longer cause errors. (reported by Bruno Haible)
2917 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2918 and READ-FROM-STRING all now return a primary value of NIL if
2919 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2920 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2921 (reported by Bruno Haible for CMUCL)
2922 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2923 do not designate a condition. (reported by Bruno Haible for
2925 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2926 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2927 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2928 permitting resolution in favour of any of the conflicting symbols.
2929 (reported by Bruno Haible for CMUCL)
2930 * bug fix: EQUAL compiler optimizations is less aggressive on
2931 strings which can potentially compare true despite having distinct
2932 specialized array element types.
2933 * bug fix: unit enumerations can be defined without dividing by
2934 zero. (thanks to Vincent Arkesteijn)
2935 * FORMAT compile-time argument count checking has been enhanced.
2936 (report from Bruno Haible for CMUCL)
2937 * a partial workaround for the bug 262: the compiler does not try to
2938 inline-expand a local function doing RETURN-FROM from a deleted
2939 BLOCK. (thanks to Peter Denno for the bug report and to David
2940 Wragg for the simple test case)
2941 * fixed some bugs revealed by Paul Dietz' test suite:
2942 ** RENAME-PACKAGE allows all package designators as new package
2944 ** constraint propagation and lambda variable substitution are
2945 more cautious in dealing with partially deleted code.
2946 ** compiler sometimes lost reoptimization passes.
2947 ** CERROR, given a condition as condition designator, passes its
2948 remaining arguments to the continue format control without
2950 ** Case-altering FORMAT directives work correctly on non-ASCII
2952 ** The REAL type specifier handles bounds outside the floating
2953 point ranges without signalling FLOATING-POINT-OVERFLOW.
2954 ** Functions with IR1-transformations can create intercomponent
2955 references to global functions.
2956 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2958 ** FORMAT ~R treats a nil value for its first parameter correctly.
2960 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2961 * enhancement: saving cores with foreign code loaded is now
2962 supported on x86/NetBSD and sparc/Linux in addition to the previously
2963 supported platforms.
2964 * bug fix: on some platforms repeated installations caused multiple
2965 copies of HTML documentation to be installed -- should not happen
2966 any more. (reported by Stefan Scholl)
2967 * bug fix: parsing self-recursive alien record types multiple times
2968 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2969 original patch by Helmut Eller for CMUCL)
2970 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2971 (thanks to Richard Kreuter)
2972 * bug fix: defining classes whose accessors are methods on existing
2973 generic functions in other (locked) packages no longer signals
2974 bogus package lock violations. (reported by François-René Rideau)
2975 * bug fix: special variables as DEFMETHOD parameters no longer have
2976 associated bogus type declarations. (reported by David Wragg and
2978 * bug fix: read-write consistency on streams of element-type
2979 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2980 * bug fix: redefiniton of the only method of a generic function with
2981 no DEFGENERIC no longer emits a full WARNING. In addition,
2982 redefinition of generic functions with no DEFGENERIC to an
2983 incompatible lambda list now signals an error. (thanks to Zach
2985 * bug fix: DEFGENERIC now works even when there's a function of the
2986 same name in an enclosing lexical environment. (thanks to Zach
2988 * fixed compiler failure, caused by instrumenting code during
2989 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2990 * optimization: added loop analysis and improved register allocation
2991 * fixed some bugs revealed by Paul Dietz' test suite:
2992 ** POSITION on displaced vectors with non-zero displacement
2993 returns the right answer.
2994 ** (SIMPLE-STRING) is a valid type specifier for sequence
2996 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2998 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2999 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3001 ** The justification version of the FORMAT ~< directive treats
3002 non-zero minpad parameter correctly.
3004 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3005 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3006 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3007 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3008 the supported interface.
3009 * new feature: Single-stepping of code compiled with DEBUG 2 or
3010 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3011 * new feature: saving cores with foreign code loaded is now
3012 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3013 Timothy Moore's work for CMUCL)
3014 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3015 parameters to * instead of NIL if no initform is supplied.
3016 (reported by Johan Bockgaard)
3017 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3018 correctly when FUNCALL appears as the car of the form. Note:
3019 despite this FUNCALL forms are not currently subject to
3020 compiler-macro expansion. (port of Raymond Toy's fix for the
3021 same from CMUCL, reported by Johan Bockgaard)
3022 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3023 (thanks for Teemu Kalvas)
3024 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3025 case instead of terminating the iteration (thanks for Julian
3026 Squires, Sean Champ and Raymond Toy)
3027 * bug fix: incorrect expansion of defgeneric that caused a style
3028 warning. (thanks for Zach Beane)
3029 * bug fix: slot accessor effective method computation works properly
3030 for classes with multiple non-standard applicable methods on
3031 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3032 * on x86 compiler supports stack allocation of results of LIST and
3033 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3034 CMUCL implementation by Gerd Moellmann)
3035 * fixed some bugs revealed by Paul Dietz' test suite:
3036 ** FORMAT strings with both the ~<~:;~> form of the justification
3037 directive and pretty-printing directives cause an error.
3039 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3040 * incompatible change: the internal functions
3041 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3042 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3043 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3044 instead of the old functions.
3045 * new feature: on platforms where "dladdr" is available foreign
3046 function names now appear in backtraces. (based on Helmut Eller's
3048 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3049 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3051 * documentation: ASDF manual is now distributed with SBCL.
3052 * bug fix: SBCL can now load its contributed modules with REQUIRE
3053 even if the system-provided entries have been removed from
3054 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3056 * bug fix: backtraces involving undefined functions or assembly
3057 routines are more informative. (thanks to Brian Downing)
3058 * bug fix: mutually referent alien structures now work correctly.
3059 (reported by Rick Taube)
3060 * bug fix: structures defined by WITH-ALIEN can be referred to
3061 within other definitions in the same WITH-ALIEN.
3062 * bug fix: division operators (MOD, TRUNCATE and the like) with
3063 constant zero divisors and integer dividends no longer generate
3065 * bug fix: provide default methods for INPUT-STREAM-P and
3066 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3067 * bug fix: improve the detection and resolution of MOP metacycles
3068 (where effective method computation depends on the generic function
3069 having its effective method computed). (reported by Bruno Haible)
3070 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3071 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3072 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3073 * bug fix: pathnames with relative directory components can be
3074 represented relative to default pathnames.
3075 * optimization: in taking the GCD of bignums, reduce the two bignums
3076 to approximately the same size (using Euclid's algorithm) before
3077 applying the more sophisticated binary GCD. (thanks to Juho
3079 * optimization: COUNT on bitvectors now operates word-at-a-time.
3080 * optimization: ASH with a positive, but not necessarily constant,
3081 (leftwards) shift, when in a modular context, is compiled to a
3083 * fixed some bugs revealed by Paul Dietz' test suite:
3084 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3085 if the corresponding argument is NIL.
3086 ** FORMAT directives accepting a minpad parameter treat negative
3088 ** literal commas as character parameters to FORMAT directives are
3090 ** literal spaces directly after ~<Newline> directives within a
3091 format-logical-block (~:< ~@:>) do not induce :FILL-style
3092 conditional newlines.
3093 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3094 as specified: it no longer includes conditional newlines).
3095 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3097 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3098 :PER-LINE-PREFIX argument does not evaluate to a string.
3100 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3101 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3102 the manual for details; for now, package locks can be disabled by
3103 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3104 if no major problems are found then it is likely that they will be
3105 compiled in unconditionally.
3106 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3107 unsupported operators on all platforms. To load a shared library
3108 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3109 object file, link it into a shared library outside of SBCL and
3110 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3112 * bug workaround: ROOM T and the GC were not working together
3113 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3114 reporting facility aren't preserved. That reporting has been
3115 disabled, so now until and unless someone figures out how to make it
3116 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3117 * minor incompatible change: as threatened around sbcl-0.8.0, the
3118 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3119 The symbols are also exported from SB-PCL for backwards
3120 compatibility, but more so than before SB-PCL should be treated as
3121 an implementation-internal package.
3122 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3124 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3125 It is known as of this release not to work on the Alpha, however.
3126 * fixed bug #167: errors signalled due to illegal syntax in method
3127 bodies are now more legible.
3128 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3129 designators and can hence be used with TYPEP.
3130 * fixed bug #333: CHECK-TYPE now ensures that the type error
3131 signalled, if any, has the right object to be accessed by
3132 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3133 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3134 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3136 * fixed bug #334: programmatic addition of slots using specialized
3137 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3138 and :ALLOCATION :CLASS slots.
3139 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3140 float exponents. (rereported by Peter Seibel)
3141 * fixed a bug: #\Space (and other whitespace characters) are no
3142 longer considered to be macro characters in standard syntax by
3143 GET-MACRO-CHARACTER.
3144 * fixed bug: initialization of condition class metaobjects no longer
3145 causes an instance of the condition to be created. (reported by
3147 * fixed bug: it is now possible to have slots such that
3148 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3149 description is neither :INSTANCE nor :CLASS.
3150 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3151 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3152 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3153 non-standard SLOT-DEFINITION-ALLOCATION values.
3154 * fixed bugs: various race conditions handling exiting threads.
3155 CL-PPCRE's thread torture test now passes.
3156 * fixed arguably-a-bug: GC time proportional to number of threads in
3157 system even when most of them are idle
3158 * optimization: improved performance of BIT and SBIT on bit-vectors.
3159 * .fasl file incompatibility: The fasl file version number has
3160 been incremented because of changes associated with package locks.
3162 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3163 * minor incompatible change: the system no longer provides
3164 optimization hints (conditions which are TYPEP
3165 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3166 mode; these hints are still emitted when higher SPEED optimization
3168 * new contrib module: a sampling profiler (profiling by statistical
3169 sampling, rather than by instrumenting functions) is available as
3170 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3171 * the behaviour of the standard function ED is now customizeable by
3172 third parties through a hook variable: see ED's documentation
3173 string for information on the protocol.
3174 * the compiler no longer emits efficiency notes for (FUNCALL X)
3175 when the type of X is uncertain under default optimization
3177 * fixed bug 276: mutating a binding of a specialized parameter to a
3178 method to something that is not TYPEP the specializer is now
3180 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3181 exhibit the required behaviour on the x86 platform. (thanks to
3182 Peter van Eynde, Eric Marsden and Bruno Haible)
3183 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3184 even for difficult arguments. (reported by Peter Graves)
3185 * fixed bug 141a: the backquote printer now descends quoted
3187 * fixed another bug in backquote printing: no more destructive
3188 modification of the form's list structure. (reported by Brian
3190 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3191 move between its address being taken and the call to
3192 interrupt_thread, fixing a crashing race condition.
3193 * the SB-POSIX contrib implementation has been adjusted so that it
3194 no longer exhibits ridiculously poor performance when constructing
3195 instances corresponding to C structs.
3197 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3198 * minor incompatible change: the sb-grovel contrib now treats C
3199 structures as alien (in the sense of SB-ALIEN) objects rather than
3200 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3201 has implications for memory management of client code
3202 (sb-grovel-returned objects must now be manually managed) and for
3203 type safety (alien objects now have full types).
3204 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3205 used to control emission of compiler diagnostics, rather than the
3206 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3207 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3208 quality should be considered deprecated.
3209 * install.sh now installs the user manual as well
3210 * (not quite a new documentable feature, but worth considering in
3211 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3212 beginnings of a semantically meaningful condition hierarchy is
3213 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3215 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3216 designator as the defaults argument.
3217 * fixed bug: Displaced arrays whose displaced-to array has become
3218 too small now cause ARRAY-DIMENSION to signal an error, providing
3219 for safer bounds-checking. (reported by Bruno Haible)
3220 * fixed bug: DEFCLASS slot definitions with identical :READER and
3221 :WRITER names now signal a reasonable error. (reported by Thomas
3223 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3225 * fixed bug: Invalid slot specification errors now print correctly.
3226 (thanks to Zach Beane)
3227 * fixed bug 320: Shared to local slot value transfers in class
3228 redefinitions now happen corrently from superclasses as
3229 well. (reported by Bruno Haible)
3230 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3232 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3233 improper lists correctly. (reported by Bruno Haible)
3234 * fixed bug 313: source-transform for <fun-name> was erroneously
3235 applied to a call of a value of a variable with name <fun-name>.
3236 (reported by Antonio Menezes Leitao)
3237 * fixed bug 307: The obsolete instance protocol ensures that
3238 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3239 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3240 remove dead unknown-values globs from the middle of the stack.
3241 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3242 easier to resume long computations after using *BREAK-ON-SIGNALS*
3243 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3244 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3245 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3246 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3247 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3248 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3250 * fixed a (fairly theoretical) bug in string printing: if
3251 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3252 does not have array-element-type equal to the most general string
3254 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3255 function name. (thanks to Nikodemus Siivola)
3256 * fixed bug: compile-time format string checker failed on
3257 non-closed ~{. (reported by Thomas F Burdick)
3258 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3259 don't warn on legal loop code involving more than one aggregate
3260 boolean. (thanks to Nikodemus Siivola)
3261 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3262 in keyword position to MAKE-PACKAGE was not being reported as
3264 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3265 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3267 * fixed bugs 280 and 312: the checking for multiple definitions in a
3268 file is less likely to become confused by uses of inline
3270 * fixed bug: the #S reader macro performs the keyword coercion
3271 specified for slot names. (reported by Kalle Niemitalo)
3272 * fixed bug: lambda lists may contain symbols whose names start with
3273 & but are not lambda-list-keywords; their occurrence triggers a
3275 * fixed bug 321: define-method-combination argument lambda lists do
3276 not cause invalid code to be generated when &optional or &aux
3277 variables have default values. (reported by Bruno Haible)
3278 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3279 have CLOS classes; this appears also to have fixed reported
3280 instability in stack exhaustion detection.
3281 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3282 MUFFLE-WARNING when no associated restart is present is now
3284 * optimization: rearranged the expansion of various defining macros
3285 so that each expands into only one top-level form in a
3286 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3288 * optimization: used a previously little-used slot in symbols to
3289 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3291 * fixed some bugs revealed by Paul Dietz' test suite:
3292 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3294 ** Fixed an optimization bug related to inheritance of initforms
3295 from local to shared slots.
3296 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3297 ** CAST optimizer forgot to flush argument derived type.
3298 ** print/read consistency on floats is now orders of magnitude
3299 more likely. (thanks also to Bruno Haible for a similar report
3301 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3302 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3303 for objects of type REAL. Make it so.
3304 ** SXHASH is specified (infelicitously) to respect similarity,
3305 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3306 it so. (thanks to Markus Ziegler)
3307 ** on the Alpha, the compiler succeeds in compiling functions
3308 returning a known number of arguments greater than 63.
3309 ** fixed handling of invalid NIL arguments in keyword position
3311 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3313 ** provided a readably-printable representation for RANDOM-STATE
3315 ** ensured that pathnames, where they have a namestring, always
3316 print using #P"..." syntax.
3318 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3319 * Support for the forthcoming 2.0 version of the NetBSD kernel
3320 running on x86 hardware has been added. (thanks to Perry
3321 E. Metzger most immediately, and others for their past work)
3322 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3323 current release version; SBCL's OpenBSD support had been broken
3324 since about the time of OpenBSD's switch to ELF binary format.)
3325 * [placeholder for DX summary]
3326 ** user code with &REST lists declared dynamic-extent, under high
3327 speed or space and low safety and debug optimization policy.
3328 * The manual has been converted to Texinfo format and the debugger
3329 chapter from the cmucl manual has been added.
3330 * A facility has been added to extract documentation strings from
3331 sbcl and store them as Texinfo-formatted snippets for inclusion in
3332 the manual (via Texinfo's @include directive)
3333 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3334 the test case to Dave Roberts)
3335 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3336 pointers. (reported by Sean Ross)
3337 * bug fix: PROFILE output is printed nicely even for large numerical
3338 values. (thanks to Zach Beane)
3339 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3340 greater than 32 handle EOF correctly.
3341 * bug fix: on X86 an immediate argument of the IMUL instruction is
3342 correctly printed in disassembly. (thanks to Lutz Euler)
3343 * bug fix: class slots in redefined classes preserve their old
3344 values. (thanks to Bruno Haible and Nikodemus Siivola)
3345 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3346 succeeds. (reported by Marco Baringer)
3347 * fixed some bugs revealed by Paul Dietz' test suite:
3348 ** READ-SEQUENCE now works on ECHO-STREAMs.
3349 ** RATIONALIZE works more according to its specification. (thanks
3352 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3353 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3354 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3355 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3356 should matter to you only if you rebind the printer control
3357 variables and then find you want different bindings in the
3358 debugger than in the ordinary execution of your program.)
3359 * The runtime build system has been tweaked to support building
3360 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3361 assembler and linker. (thanks to Nikodemus Siivola)
3362 * Unbound, undefined, undeclared variables now trigger full
3363 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3364 more often programmer error than deliberate exploitation of undefined
3366 * optimization: the hash algorithm for strings has changed to one
3367 that is less vulnerable to spurious collisions. (thanks to Juho
3369 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3370 needless bounds checking. (thanks to Juho Snellman)
3371 * optimization: implemented multiplication as a modular
3372 (UNSIGNED-BYTE 32) operation on the PPC backend.
3373 * fixed some bugs revealed by Paul Dietz' test suite:
3374 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3376 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3377 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3378 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3380 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3382 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3384 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3385 their output stream on EOF from read.
3386 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3387 have been read to end-of-file.
3388 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3390 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3391 description of determination of which consecutive characters
3393 ** Printing the "Space" character with escaping on now yields "#\\ ",
3394 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3395 ** Reading floating-point numbers with *READ-BASE* set to a number
3396 less than 10 works correctly.
3397 ** Reading floating-point numbers with *READ-BASE* set to a number
3398 more than 10 works correctly.
3399 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3400 the readtable currently in effect.
3402 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3403 * minor incompatible change: parsing of namestrings on a physical
3404 (Unix) host has changed; numbers after the final #\. in a
3405 namestring are no longer interpreted as a version field. This is
3406 intented to be largely invisible to the user, except that the
3407 meaning of the namestring "*.*.*" has changed: it now refers to a
3408 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3409 should usually be replaced by
3410 (make-pathname :name :wild :type :wild :version :wild)
3411 with the added benefit that this is more likely to be portable.
3412 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3413 option to OPEN now signals an error if the file being opened
3414 exists; this may have an impact on existing code.
3415 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3416 signals received, on the PowerPC platforms (both Linux and
3417 Darwin). (thanks to Pierre Mai for pointing out the location of
3419 * several fixes on OS X: The system now builds and runs cleanly on
3420 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3421 (thanks to Brian Mastenbrook)
3422 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3423 second-resolution: integer multiples of 1/3600 between -24 and 24.
3424 (thanks to Vincent Arkesteijn)
3425 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3426 type when called with 1 argument; PEEK-CHAR checked type of
3427 PEEK-TYPE only after having read first character from a
3428 stream. (reported by Peter Graves)
3429 * bug fix: the garbage collector now has much better locality
3430 behaviour, and in particular no longer treats all memory as being
3431 exhausted when many small objects point to each other in a deeply
3433 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3434 recognized as being TYPEP their class.
3435 * bug fix: the PUSHNEW documentation string has been corrected.
3436 (thanks to Vincent Arkesteijn)
3437 * bug fix: defaulting of the value for the last of an atypically
3438 large number of multiple values being bound was not being
3439 performed correctly on the Alpha or PPC platforms
3440 * optimization: implemented multiplication as a modular
3441 (UNSIGNED-BYTE 32) operation on the x86 backend.
3442 * optimization: SEARCH on simple-base-strings can now be open-coded.
3443 (see also contrib/compiler-extras.lisp for inspiration for
3444 teaching the compiler about the Boyer-Moore algorithm).
3445 * value, returned by MAX (and MIN) called with several EQUALP, but
3446 not EQL, arguments now does not depend on compiler settings.
3447 * fixed some bugs revealed by Paul Dietz' test suite:
3448 ** in stack analysis liveness information is propagated from
3449 non-local entry points.
3450 ** pathwise CAST removing failed when the CAST node did not start
3452 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3453 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3455 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3456 host is already defined.
3457 ** RENAME-FILE works on streams instead of signalling an internal
3459 ** PEEK-CHAR uses the current readtable when determining whether
3460 or not a character is whitespace.
3461 ** MERGE-PATHNAMES handles the case when the pathname does not
3462 specify a name while the default-pathname specifies a version.
3463 ** Pathnames now stand a better chance of respecting print/read
3465 ** Attempting to use standardized file system operators with a
3466 pathname with invalid :DIRECTORY components signals a
3468 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3470 ** DIRECTORY on logical pathnames is more correct.
3471 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3472 signal a TYPE-ERROR if their argument is not a stream.
3473 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3474 designator argument does not designate a stream.
3475 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3476 examining the synonym.
3477 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3479 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3480 element-type larger than ([UN]SIGNED-BYTE 32).
3482 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3483 * When built with the :SB-FUTEX feature, threaded builds now take
3484 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3485 for faster/more reliable mutex and condition variable support.
3486 * Incompatible change (but one you probably shouldn't have been using
3487 anyway): the interface and code for arbitrating between multiple
3488 threads in the same user session has been redesigned.
3489 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3490 error when called without an explicit environment argument.
3491 (thanks to Nikodemus Siivola)
3492 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3493 confused about their position. (thanks to Adam Warner and Gerd
3495 * bug fix: Pretty printing backquoted forms with unquotations in the
3496 argument list position of various code constructs such as LAMBDA
3497 now works correctly. (reported by Paul Dietz)
3498 * bug fix: Pretty printing unquotations no longer loses all
3499 stream position information.
3500 * optimization: performance of string output streams is now less
3501 poor for multiple small sequence writes.
3502 * optimization: performance of CSUBTYPEP in the presence of complex
3503 expressions involving CONS and NOT many times has been improved.
3504 (reported by Paul Dietz)
3505 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3507 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3508 streams for the REPL, for the debugger, and so on. (thanks to
3510 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3511 * fixed some bugs revealed by Paul Dietz' test suite:
3512 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3513 is ignored if it is too small, rather than propagating through
3514 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3515 ** extremely complex negations of CONS types were not being
3516 sufficiently canonicalized, leading to inconsistencies in
3518 ** VALUES tranformer lost derived type.
3520 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3521 * fixed a bootstrapping bug: the build process no longer assumes
3522 that the various BOOLE-related constants have the same value in
3523 host and target lisps. (noted by Paul Dietz' test suite on an
3524 SBCL binary built from CLISP)
3525 * The system can now be dynamically linked on the MIPS platform,
3526 which enables dynamic loading of foreign code from Lisp. (thanks
3527 to Ralf Baechle for discussions on the MIPS ABI)
3528 * The system now records debugging information for its own source
3529 files in a filesystem-position-independent manner, relative to
3530 the "SYS" logical host.
3531 * fixed a compiler bug: MV-LET convertion did not check references
3532 to the "max args" entry point. (reported by Brian Downing)
3533 * tweaked disassembly notes to be less confident about proclaiming
3534 some instruction as an LRA. (thanks to Brian Downing)
3535 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3536 now each have their own history, command character, and other
3537 characteristics. (thanks to David Lichteblau)
3538 * fixed some bugs revealed by Paul Dietz' test suite:
3539 ** compiler failure in compiling LOGAND expressions including a
3541 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3542 shift greater than 32.
3543 ** FLUSH-DEST did not mark blocks for type check regeneration.
3544 ** HANDLER-CASE failed to accept declarations in handler clauses
3545 in some circumstances.
3547 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3548 * New code in contrib/sb-introspect (still probably not entirely
3549 stable yet) provides some support for smart Lisp development
3550 environments like SLIME.
3551 * The conditions signalled for errors occurring when loading .fasl
3552 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3553 in a way which should help ASDF recover gracefully.
3554 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3555 stuff has been cleaned up. If you code contrib/ stuff, this might
3556 affect you, and you can look at contrib/README, contrib/STANDARDS,
3557 and/or the 0.8.4.27 diff to check.
3558 * In full calls the compiler now does not generate checks for declared
3559 argument types for all arguments.
3560 * various threading fixes
3561 ** and some experimental patches which didn't make it into
3562 the main tree for this release, but which are shipped in
3563 contrib/experimental-thread.patch as a possible fix for some
3564 failures (deadlock, spinning...) in GC-intensive multithreaded
3566 * fixed PPC build problem (source code incompatibility of different
3567 library versions): added offsetof() hackery which attempts to divine
3568 where glibc maintainers put uc_mcontext today
3569 * fixed bug 282: compiler does not trust type assertions while passing
3570 arguments to a full call.
3571 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3572 &OPTIONAL VALUES type parameter.
3573 * fix bug 214: algorithm for noting rejected templates is now more
3574 similar to that of template seletion. (also reported by rydis on
3576 * fixed bug 141b: printing backquoted information readably and prettily
3577 inserts a space where necessary.
3578 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3579 (CHARACTER 10) are now reported as errors, rather than propagated
3580 as unknown types. (reported by piso on #lisp)
3581 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3582 with values NIL and :ERROR. (thanks to Milan Zamazal)
3583 * fixed bug 191c: CLOS now does proper keyword argument checking as
3584 described in CLHS 7.6.5 and 7.6.5.1.
3585 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3586 longer raise an error; further, using a list as a for-as-arithmetic
3587 counter now raises a meaningful error.
3588 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3589 now understood by sequence creation functions such as MAKE-SEQUENCE
3591 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3592 a STRING-INPUT-STREAM.
3593 * compiler enhancement: SIGNUM is now better able to derive the type
3595 * type declarations inside WITH-SLOTS are checked. (reported by
3597 * fixed some bugs revealed by Paul Dietz' test suite:
3598 ** incorrect optimization of TRUNCATE for a positive first
3599 argument and negative second.
3600 ** compiler failure in let-convertion during flushing dead code.
3601 ** compiler failure while deriving type of TRUNCATE on an
3602 interval, containing 0.
3603 ** ASH of a negative bignum by a negative bignum count now returns
3605 ** intersection of CONS types now canonicalizes properly, fixing
3606 inconsistencies in SUBTYPEP.
3608 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3609 * incompatible change: The --disable-debugger command line
3610 option now clobbers the debugger at a more fundamental
3611 level, by redefining #'INVOKE-DEBUGGER instead of by
3612 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3613 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3614 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3615 enter the debugger REPL and then suffer recursive errors
3616 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3617 while under the new system, BREAK in --disable-debugger mode
3618 terminates the system just as an unhandled error would.
3619 * fixed compiler performance when processing loops with a step >1;
3620 * bug fix: DOCUMENTATION now retrieves generic function
3621 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3622 support has been systematized, and now supports the methods
3623 specified by ANSI, along with a default method and a method for
3624 slot documentation. (reported by Nathan Froyd)
3625 * bug fix: effective methods associated with a generic function are
3626 no longer cached over a change of that generic function's method
3627 combination. (reported by Andreas Fuchs)
3628 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3629 names a non-existent directory. (thanks to Andreas Fuchs)
3630 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3631 the PPC platform, lead to stack corruption; this has been fixed.
3632 (reported by Rainer Joswig)
3633 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3634 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3635 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3636 arithmetic in general, is now much more reliable on the PPC
3638 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3639 platform now returns the right answer.
3640 * optimization: restored some effective method precomputation in
3641 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3642 precomputation is now tunable.
3643 * optimization: compiler-internal data structure use has been
3644 reviewed, and changes have been made that should improve the
3645 performance of the compiler by about 20%.
3646 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3647 simple-base-strings and simple-bit-vectors is improved.
3648 * optimization: the optimization of 32-bit logical and arithmetic
3649 functions introduced in version 0.8.3 on the x86 has been
3650 implemented on the mips, ppc and sparc platforms; an
3651 implementation of the same facility, but for 64-bit arithmetic,
3652 has been added for the alpha.
3653 * microoptimization: the compiler is better able to make use of the
3654 x86 LEA instruction for multiplication by constants.
3655 * bug fix: in some situations compiler did not report usage of
3656 generic arithmetic in (SPEED 3) policy.
3657 * bug 145b fix: compiler used wrong type specifier while converting
3658 MEMBER-types to numeric.
3659 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3661 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3662 index argument now works properly on the Alpha platform.
3663 * bug fix: floating point exception treatment on the Alpha platform
3665 * bug fix: FILE-POSITION works much better on string input and
3666 output streams. (thanks to Nikodemus Siivola)
3667 * bug fix: many threading/garbage collection symptoms sorted.
3668 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3669 might be pseudo-atomic.
3670 * internal change: Stopping for GC is now done with signals not
3671 ptrace. GC is now done in whichever thread wanted it, instead of
3673 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3675 * bug fix: result form in DO is not contained in the implicit
3677 * incompatible change: ICR structure is changed; the value part of
3678 CONTINUATION is now called LVAR; corresponding functions are
3679 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3680 * added type deriver for ISQRT (thanks to Robert E. Brown).
3681 * bug fix: better support for loading from the command line when an
3682 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3684 * fixed some bugs revealed by Paul Dietz' test suite:
3685 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3686 ** ROUND and FROUND now give the right answer when given very
3687 small float arguments.
3688 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3690 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3691 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3692 ** LCM should return a non-negative integer.
3693 ** PARSE-INTEGER returned the index of a terminator instead of the
3694 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3695 ** PARSE-INTEGER returned an incorrect index being applied to a
3697 ** LCM with two arguments of 0 returns 0 rather than signalling
3699 ** unsigned addition of a 32-bit constant with the high bit set no
3700 longer causes an internal compiler error on the x86.
3701 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3702 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3703 with negative last argument.
3704 ** byte specifiers with zero size and position no longer cause
3705 an error during type derivation.
3706 ** bignum multiplication on the Alpha platform now returns the
3708 * porting: The system now builds on SuSE AMD64, although it still
3709 generates a 32-bit binary.
3710 * .fasl file incompatibility: The fasl file version number has
3711 been incremented (because of the changes to internal compiler
3712 data structures referred to above).
3714 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3715 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3716 more accurately, on the Darwin kernel running on PowerPC hardware.
3717 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3718 * Compiler code deletion notes now signal a condition of type
3719 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3720 an associated MUFFLE-WARNING restart.
3721 * The compiler now performs limited argument count validation of
3722 constant format strings in FORMAT, and where appropriate in ERROR,
3723 CERROR and WARN. (thanks to Gerd Moellmann)
3724 * New ASDF-INSTALL contrib can be used for automatic download and
3725 installation of third-party Lisp code from CCLAN or other sites
3727 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3728 which forces another thread to execute a function supplied by the
3730 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3731 now accept and act upon their :ELEMENT-TYPE keyword argument.
3732 (reported by Martin Atzmueller, Edi Weitz)
3733 * bug fix: FILE-POSITION now accepts position designators up to
3734 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3735 is the greater. (thanks to Patrik Nordebo)
3736 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3737 Kalle Olavi Niemitalo)
3738 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3739 printable. (reported by Eric Marsden)
3740 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3741 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3742 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3743 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3744 (thanks to Stig Sandoe)
3745 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3746 UNREAD-CHAR now correctly includes the unread character in the
3747 target sequence. (thanks to Gerd Moellmann)
3748 * bug fix in threaded builds: the system can now be suspended and
3749 resumed by shell job control with minimal disruption.
3750 * bug fixes in times and timezones >2038AD
3751 * better handling of "where is GNU make?" problem in build scripts
3752 (thanks to Nikodemus Siivola)
3753 * new optimization: inside a named function any reference to a
3754 function with the same name is considered to be a self-reference;
3755 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3756 optimization quality.
3757 * new optimization on x86: logical functions and + now have
3758 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3759 used when the result is truncated to 32 bits.
3760 * VALUES declaration is partially enabled.
3761 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3762 * fixed some bugs revealed by Paul Dietz' test suite:
3763 ** The system now obeys the constraint imposed by
3764 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3765 types form a lattice under type intersection.
3766 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3767 ** ASSOC now ignores NIL elements in an alist.
3768 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3769 and (1+ MOST-POSITIVE-FIXNUM) answers.
3770 ** The addition of a method with invalid qualifiers to a generic
3771 function does not cause an error to be signalled immediately;
3772 a warning is signalled, and the error is generated only on
3773 calling the generic function.
3774 * changed .fasl file version number, in part to add type codes for
3775 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3776 obscure ANSI requirements
3778 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3779 * fixed bug 148: failure to inline-expand a local function left
3780 garbage, confusing the compiler.
3781 * fixed bugs 3cd: structure slot readers perform type check if the
3782 slot can have an invalid value (i.e. it is either not initialized
3783 or can be written with a less specific slot writer).
3784 * bug fix: the compiler now traps array references to elements off
3785 the end of an array; previously, the bounds checking in some
3786 circumstances could go off-by-one.
3787 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3789 * type declarations for array element types now obey the description
3790 on the CLHS page "Declaration TYPE", as per discussions on
3791 sbcl-help around 2003-05-08. This means that a declaration
3792 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3793 declaration, all references to BAR will be asserted or assumed
3794 (with THE, so dependent on compiler policy) to involve objects of
3795 type FOO. Note that no such declaration is implied in
3796 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3797 * declared types of functions from the "Conditions"
3798 chapter. (reported by Paul Dietz)
3799 * bug fix: CERROR accepts a function as its first argument.
3800 * bug fix: NTH an NTHCDR accept a bignum as index
3801 arguments. (reported by Adam Warner)
3802 * optimization: character compare routines now optimize comparing
3803 against a constant character. (reported by Gilbert Baumann)
3804 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3805 argument now works properly on the MIPS platform.
3806 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3807 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3808 declared to have a functional type, does not cause an error
3810 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3811 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3812 * fixed bug: if last continuation of a deleted block has a
3813 destination, this destination should be deleted too. (reported by
3815 * fixed a bug in the bootstrap process: the host compiler's values
3816 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3817 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3818 test case from Patrik Nordebo)
3819 * improved the ability of the disassembler on the PPC platform to
3820 provide helpful disassembly notes.
3821 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3822 the class in more cases than previously.
3823 * bug fix: FILE-POSITION now understands :START and :END for
3824 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3825 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3826 8) data. (thanks to David Lichteblau)
3827 * bug fix: it is possible to add a method to a generic function
3828 without lambda list.
3829 * bug fix: reader failed to signal END-OF-FILE inside an
3830 object representation. (reported by Nikodemus Siivola)
3831 * fixed some bugs revealed by Paul Dietz' test suite:
3832 ** LAST and [N]BUTLAST should accept a bignum.
3833 ** condition slot accessors are methods.
3834 ** (VECTOR NIL) is a subtype of STRING.
3836 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3837 * minor incompatible change: some nonsensical specialized lambda
3838 lists (used in DEFMETHOD) which were previously ignored now signal
3840 * minor incompatible change: the system is now aware of the types of
3841 variables in the COMMON-LISP package, and will signal errors for
3842 most violations of these type constraints (where previously they
3843 were silently accepted).
3844 * minor incompatible change: COMPILE-FILE now uses the freedom
3845 afforded (ANSI 3.2.2.3) to use derived function types for
3846 functions defined in the same file. This also permits the system
3847 to warn on static type mismatches and function
3848 redefinition. (Currently it does not work with high DEBUG level.)
3849 * minor incompatible change: VALUES declaration is disabled.
3850 * When issuing notes, the compiler now signals a condition of type
3851 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3852 restart for use in user handlers. It is expected that the
3853 COMPILER-NOTE condition will eventually become a condition
3854 supertype to a hierarchy of note types, which will then be
3855 handleable in a similar fashion. However, at the moment, no such
3856 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3857 but it's an implementation detail, not a classification for the
3859 * Changes in type checking closed the following bugs:
3860 ** type checking of unused values (192b, 194d, 203);
3861 ** template selection based on unsafe type assertions (192c, 236);
3862 ** type checking in branches (194bc).
3863 * A short form of VALUES type specifier has ANSI meaning (it has
3864 increased the number of situations when SBCL cannot perform type
3866 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3867 keywords or constants is permissible.
3868 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3869 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3870 classes. (thanks to Antonio Martinez)
3871 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3872 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3873 argument to a pretty-print stream. Instead, it leaves any such
3874 operations to DESCRIBE-OBJECT methods.
3875 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3877 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3878 lambda lists. (thanks to David Lichteblau)
3879 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3880 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3881 (thanks to Gerd Moellmann)
3882 * fixed bug 246: increased compilation speed of long
3883 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3885 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3887 * DEFCONSTANT now throws a condition of type
3888 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3889 constant to a non-EQL value; CONTINUE and ABORT restarts
3890 respectively change and preserve the value.
3891 * fixed bug 63: The code walker, part of the implementation of CLOS,
3892 is now better at handling symbol macros.
3893 * bug fix: There is no longer an internal implementation type named
3894 CL:LENGTH. (reported by Raymond Toy)
3895 * bug fix: In macro-like defining macros/special operators the
3896 implicit block does not enclose the lambda list.
3897 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3898 enclosed in parentheses) are not suitable as type specifiers, and
3899 their use properly signals an error now.
3900 * bug fix: An argument count mismatch for a type specifier in code
3901 being compiled no longer causes an unhandled error at compile
3902 time, but signals a compile-time warning.
3903 * fixed simple vector readable printing
3904 * bug fix: DESCRIBE takes more care over whether the class
3905 precedence list slot of a class is bound before accessing it.
3906 (reported by Markus Krummenacker)
3907 * bug fix: FORMATTER can successfully compile pretty-printer format
3908 strings which use variants of the ~* directive inside.
3909 * bug fix: SEARCH now applies its TEST predicate to the elements of
3910 the arguments in the correct order. (thanks to Wolfhard Buss)
3911 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3912 in type inference. (thanks to Robert E. Brown)
3913 * bug fix: Reading in symbols with an explicit package name of ""
3914 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3915 * fixed some bugs revealed by Paul Dietz' test suite:
3916 ** NIL is now allowed as a structure slot name.
3917 ** Arbitrary numbers, not just REALs, are allowed in certain
3918 circumstances in LOOP for-as-arithmetic clauses.
3919 ** Multiple class redefinitions before slot access no longer
3920 causes a type error.
3921 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3922 association between the name and a class.
3923 ** Generic functions with non-standard method-combination and over
3924 five methods all of which return constants no longer return NIL
3925 after the first few invocations. (thanks to Gerd Moellmann)
3926 ** CALL-NEXT-METHOD with no arguments now passes the original
3927 values of the arguments, even in the presence of assignment.
3928 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3930 ** DISASSEMBLE works with closures and funcallable instances.
3931 ** ADD-METHOD now returns the generic function, not the new method.
3932 ** FIND-METHOD signals an error if the lengths of the specializers
3933 is incompatible with the generic function, even if the ERRORP
3935 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3936 which its argument is a member.
3937 ** DEFCLASS only redefines the class named by its class-name
3938 argument if that name is the proper name of the class;
3939 otherwise, it creates a new class.
3940 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3941 of the UNBOUND-SLOT condition to the name of the slot.
3942 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3943 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3944 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3945 SLOT-MAKUNBOUND in the specified fashion.
3947 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3948 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3949 cross-compilation host. As a consequence, we can now bootstrap our
3950 way up to SBCL starting with a bare gcc toolchain and human-readable
3951 source code (first the source to CLISP, then the source to SBCL).
3952 * A contributed module containing a partial implementation of the
3953 simple-streams interface has been included. (thanks to Rudi
3955 * A contributed module implementing the RFC1321 Message Digest
3956 Algorithm, known as MD5, has been included.
3957 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3958 no longer has any effect, as the code controlled by this feature
3959 has been deleted. (As far as we know, no-one has ever built using
3960 this feature, and its semantics were confused in any case).
3961 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3962 work on conditions (as required by the ANSI specification),
3963 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3964 expected behaviour on conditions. Users should note, however,
3965 that such behaviour is not required by the ANSI specification,
3966 and so use of this behaviour may render their code unportable.
3967 * fixed some bugs revealed by Paul Dietz' test suite:
3968 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3970 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3971 ** SXHASH on condition objects no longer returns NIL.
3972 ** :ALLOCATION :CLASS slots are better treated; their values are
3973 updated on class redefinition, and initforms inherited from
3974 superclasses are applied.
3975 ** REMOVE-METHOD returns its generic function argument even when
3976 no method was removed.
3977 ** SHARED-INITIALIZE now initializes the values of the requested
3978 slots, including those with :ALLOCATION :CLASS.
3979 ** ALLOCATE-INSTANCE now works on structure classes defined via
3980 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3982 ** SLOT-EXISTS-P now works on conditions, as well as structures
3984 ** MAKE-LOAD-FORM now has the required methods on
3985 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3986 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3987 keyword, and now implements the SLOT-NAMES argument.
3988 ** methods with &OPTIONAL arguments no longer allow too many
3989 arguments to be passed in the call without error.
3990 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3991 option is consistent with the required arguments of the generic
3992 function lambda list.
3993 * bug fix: REQUIRE accepts a string designator. (Thanks to
3995 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3996 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3997 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3998 * bug fix: The compiler now checks for duplicated variables in macro
4000 * bug fix: SETQ on globals returns the correct value.
4001 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4002 not a COMPILER-ERROR (followed by some other strange error on
4003 choosing the CONTINUE restart).
4004 * bug fix: make.sh and friends are now more consistent in the way that
4005 they look for GNU "make".
4007 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4008 * experimental native threads support (on x86 Linux >=2.4 only).
4009 This is not compiled in by default: you need to add :SB-THREAD to
4010 the target features. See the "Beyond ANSI" chapter of the manual
4012 * fix for longstanding nonANSIism: The old distinction between
4013 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4014 The return value from CL:FIND-CLASS is now a CLOS class, and
4015 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4016 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4017 * An interface to the MetaObject Protocol, as described in Kiczales,
4018 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4019 MIT Press, 1991, is available from the SB-MOP package.
4020 * incompatible change: the SB-PCL package should now be considered
4021 a private implementation detail, and no longer a semi-private MOP
4023 * minor incompatible change: due to rearrangement for threads, the
4024 control stack and binding stack are now allocated at arbitrary
4025 addresses instead of being hardcoded per-port. Users affected by
4026 this probably have to be doing advanced things with shared
4027 libraries, and will know who they are.
4028 * minor incompatible change: Previously, all --eval forms used were
4029 processed with READ before any of them were processed with EVAL.
4030 Now each --eval form is processed with both READ and EVAL before
4031 the next --eval form is processed. (Thus package operations like
4032 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4033 work as the user might reasonably expect.)
4034 * minor incompatible change: *STANDARD-INPUT* is now only an
4035 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4037 * minor incompatible change: Y-OR-N-P is now character-oriented,
4038 not line oriented. Also, YES-OR-NO-P now works without errors.
4039 (thanks to Antonio Martinez)
4040 * sb-aclrepl module improvements: an integrated inspector, added
4041 repl features, and a bug fix to :trace command.
4042 * Known functions, which cannot be open coded by the backend, are
4043 considered to be able to check types of their arguments. (fixing
4044 a bug report by Nathan J. Froyd)
4045 * fixed a bug in computing method discriminating functions: It is
4046 now possible to define methods specialized on classes which have
4047 forward-referenced superclasses. (thanks to Gerd Moellmann)
4048 * fixed evaluation order in optional entries (reported by Gilbert
4050 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4051 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4052 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4053 required-by-AMOP NAME argument, as well as CLASS and
4054 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4055 * fixed bug 20: DEFMETHOD can define methods using names that are
4056 not the proper names of classes to designate class specializers.
4057 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4058 Unix file descriptors, instead of blowing up. (thanks to Antonio
4060 * Garbage collection refactoring: user-visible change is that a
4061 call to the GC function during WITHOUT-GCING will not do garbage
4062 collection until the end of the WITHOUT-GCING. If you were doing
4063 this you were probably losing anyway.
4064 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4065 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4066 TYPEP the latter but not the former.
4067 * The compiler issues a full WARNING for calls to undefined functions
4068 with names from the CL package.
4069 * MAP-INTO for a vector destination is open coded. (reported by
4070 Brian Downing on c.l.l)
4071 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4072 documentation string.
4073 * fixed some bugs revealed by Paul Dietz' test suite:
4074 ** COPY-ALIST now signals an error if its argument is a dotted
4076 ** Condition slots are now accessed more correctly in the presence
4077 of multiple initargs for a given slot.
4078 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4079 exclude restarts of the same name associated with a different
4081 ** DEFCLASS of forward-referenced classes with another
4082 forward-referenced class in the superclasses list no longer
4084 ** Condition slots are now initialized once each, not multiple
4085 times. (thanks to Gerd Moellmann)
4086 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4088 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4089 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4090 arguments contain duplicated elements.
4091 ** RESTART-CASE understands local macros.
4092 ** RESTART-CASE associates exactly its own restarts with a condition.
4093 ** ENDP in safe mode checks its argument to be of type LIST.
4094 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4095 in question is unbound.
4096 ** Optimized MAKE-INSTANCE functions no longer cause internal
4097 assertion failures in the presence of duplicate initargs.
4098 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4099 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4100 propagated even in the ctor optimized implementation of
4102 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4104 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4105 * a better implementation of SXHASH on (simple) bit vectors,
4106 measured both in execution speed and in distribution of results
4107 over the positive fixnums, has been installed. Likewise, a better
4108 implementation of EQUAL for simple bit vectors is now available.
4109 * fixed CEILING optimization for a divisor of form 2^k.
4110 * fixed bug 240 (emitting extra style warnings "using the lexical
4111 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4112 by Antonio Martinez)
4113 * fixed SXHASH, giving different results for NIL depending on type
4114 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4115 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4116 variable. (found by Rolf Wester)
4117 * SBCL does not ignore type declarations for special
4118 variables. (reported by rif on c.l.l 2003-03-05)
4119 * some bug fixes in contrib/sb-aclrepl/
4120 * fixed some bugs revealed by Paul Dietz' test suite:
4121 ** a bug in the CONS type specifier, whereby the CAR and CDR
4122 types got intertwined, has been fixed;
4123 ** the type system is now able to reason about the interaction
4124 between INTEGER and RATIO types more completely;
4125 ** APPEND, [N]REVERSE and NRECONC check that those their
4126 arguments, which must be proper lists, are really so;
4127 ** An array specialized to be unable to hold elements has been
4128 implemented, as required -- yes, really -- by ANSI;
4129 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4130 on malformed property lists;
4132 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4133 * incompatible packaging change: in line with Unix convention,
4134 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4135 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4136 * REQUIRE and PROVIDE are now optionally capable of doing something
4137 useful. See the documentation string for REQUIRE.
4138 * infrastructure for a managed SBCL contrib system: contributed
4139 modules in this release include:
4140 ** the ASDF system definition facility;
4141 ** an interface to the BSD Sockets API;
4142 ** an ACL-like convenience interface to the repl;
4143 (thanks to Kevin Rosenberg)
4144 ** an implementation of ROTATE-BYTE, with efficient implementation
4146 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4147 gives a closer approximation to the right answer than previously.
4148 (thanks to Raymond Toy)
4149 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4150 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4151 optional environment arguments, as required by ANSI.
4152 * fixed bugs in other functions taking environment objects, allowing
4153 calls with an explicit NIL environment argument to be compiled
4155 * fixed bug 228: primary return values from
4156 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4157 COMPILE or FUNCTION.
4158 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4159 :TYPE will no longer signal errors on innocuous objects.
4160 * fixed bug 231b: SETQ is better at respecting type declarations in
4161 the lexical environment.
4162 * fixed a bug in DEFCLASS: classes named by symbols with no or
4163 unprintable packages can now be defined.
4164 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4165 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4166 * fixed compiler failure related to checking types of functions.
4167 (reported by Robert E. Brown)
4168 * the compiler is now much more consistent in its error-checking
4169 treatment of bounding index arguments to sequence functions: in
4170 (SAFETY 3) code, errors will be signalled in almost all cases if
4171 invalid sequence bounding indices are passed to functions defined
4172 by ANSI to operate on sequences.
4173 * fixed a bug in the build procedure: documentation of SBCL-specific
4174 packages is now preserved and available in the final Lisp image.
4175 * lifted FDEFINITION lookup out of loops in the implementation of
4176 many list operations. (thanks to Robert E. Brown)
4177 * fixed a bug in the reader: the #n# reader macro now works for
4178 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4179 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4180 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4181 E. Brown and Tony Martinez respectively)
4182 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4183 SLOT-BOUNDP: in particular, it is now able to optimize them much
4184 better, and is now not vulnerable to having packages renamed.
4185 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4186 always called when a slot is not present in an instance. (thanks
4188 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4189 longer signal an error on unreading a character following EOF on
4190 the previous constituent stream. (thanks to Tony Martinez)
4191 * fixed some bugs revealed by Paul Dietz' test suite:
4192 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4193 not just nonnegative fixnums;
4194 ** the logical bit-array operators such as BIT-AND now accept an
4195 explicit NIL for their "opt-arg" argument (to indicate a
4196 freshly-consed result bit-array);
4197 ** ELT now signals an error on an invalid sequence index in safe
4199 ** the type system is now cleverer about negations of numeric
4200 types, and consequently understands the BIGNUM and RATIO types
4202 ** the type system is now cleverer about the interaction between
4203 INTEGER and RATIO types: while bugs still remain, many more
4204 cases are accurately computed;
4205 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4206 if it is in the last clause;
4207 ** CONSTANTLY now correctly returns a side-effect-free function in
4209 ** DECLARE is no longer treated as a special-operator; in
4210 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4211 * incremented fasl file version number due to the change in the
4212 DEFSTRUCT-SLOT-DESCRIPTION structure.
4214 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4215 * minor incompatible change: code processed by the "interpreter" or
4216 EVAL now has a compilation optimization policy of (DEBUG 2)
4217 (changed from (DEBUG 1)) to improve debuggability of interactive
4218 development, and to allow the use of the debug RETURN command in
4220 * an experimental implementation of the RETURN command for the
4221 debugger has been included. (thanks to Frederik Kuivinen)
4222 * fixed bug 62: constraints were not propagated into a loop.
4223 * fixed bug in embedded calls of SORT (reported and investigated by
4225 * fixed some bugs revealed by Paul Dietz' test suite:
4226 ** printing and reading of arrays with some dimensions having
4227 length 0 (thanks to Gerd Moellmann);
4228 ** BOA constructor with &AUX argument without a default value does
4229 not cause a type error;
4230 ** CONSTANTP now returns true for all self-evaluating objects.
4232 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4233 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4234 accessors that are related by inheritance, as specified in the
4235 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4236 Valtteri Vuorikoski)
4237 * The compiler is now able to inline functions that were defined in
4238 a complex lexical environment (e.g. inside a MACROLET).
4239 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4241 * Support for the upcoming FreeBSD-5.0 release has been included.
4242 (thanks to Dag-Erling Smorgrav)
4243 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4244 effect when it is not in a toplevel context.
4245 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4246 stand a better chance of being correct. (thanks to Gerd
4248 * fixed bug in COERCE, which now signals an error on coercing a
4249 rational to a bounded real type which excludes the expected
4251 * The compiler is now able to derive types more accurately from the
4252 COERCE and COMPILE functions.
4253 * fixed bug 223: functional binding is considered to be constant
4254 only for symbols in the CL package.
4255 * fixed bug 231: SETQ did not check the type of a variable being set
4256 (reported by Robert E. Brown)
4257 * A new optimization for MAKE-INSTANCE has been included, fixing
4258 various bugs (including relating to :ALLOCATION :CLASS slots and
4259 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4261 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4262 ** As required by ANSI, LOOP now disallows anonymous collection
4263 clauses such as COLLECT I in conjunction with aggregate boolean
4264 clauses such as THEREIS (= I 1);
4265 ** LOOP now signals an error when any variable is reused in the
4266 same loop (including the potentially useful construct analogous
4267 to WITH A = 1 WITH A = (1+ A);
4268 ** IT is only a special loop symbol within the first clause of a
4269 conditional loop clause;
4270 ** LOOP with a typed iteration variable over a hashtable now
4271 signals a type error iff it should.
4272 * fixed some other bugs revealed by Paul Dietz' test suite:
4273 ** FILE-STREAM now names the class previously known as FD-STREAM;
4274 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4275 argument) no longer signals an error;
4276 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4277 of the slot symbol, rather than using the current package
4278 ((:CONC-NAME "") continues to intern the slot's name in the
4280 * incremented fasl file version number, because of the incompatible
4281 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4282 of the new implementation of DEFINE-COMPILER-MACRO.
4284 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4285 * Support for building SBCL for MIPS platforms running in
4286 little-endian mode has now been checked in, and basic
4287 functionality on said platforms verified.
4288 * minor incompatible change: PCL now records the pathname of a file
4289 in which methods and the like are defined, rather than its
4291 * minor incompatible change: TRUENAME now considers the truename of
4292 a file naming a directory to be the pathname with :DIRECTORY
4293 component indicating that directory.
4294 * minor incompatible change: a NAMED clause in the extended form of
4295 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4296 reason for the previous behaviour is unclear.
4297 * more systematization and improvement of CLOS and MOP conformance
4298 in PCL (thanks to Gerd Moellman and Pierre Mai):
4299 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4301 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4302 primary methods with no specializers;
4303 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4305 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4306 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4307 FORWARD-REFERENCED-CLASSes; error reporting on
4308 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4310 ** SXHASH on CLOS instances now uses a slot internal to the
4311 instance to return different numbers on distinct instances,
4312 while preserving the same return value through invocations of
4314 ** DEFMETHOD signals errors when methods with longer incongruent
4315 lambda lists are added to generic functions;
4316 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4317 CLASS, as specified in AMOP;
4318 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4319 on the order returned by the primary method for classes of
4320 class STANDARD-CLASS;
4321 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4322 * fixed some bugs shown by Paul Dietz' test suite:
4323 ** DOLIST puts its body in TAGBODY;
4324 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4326 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4327 value producing form;
4328 ** if more variables are given to PROGV than values, extra
4329 variables are bound and made to have no value;
4330 ** NSUBSTITUTE on list arguments gets the right answer with
4332 ** ELT signals an error of type TYPE-ERROR when the index argument
4333 is not a valid sequence index;
4334 ** LOOP signals (at macroexpansion time) an error of type
4335 PROGRAM-ERROR when duplicate variable names are found;
4336 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4337 ** FUNCALL of special-operators now cause an error of type
4339 ** PSETQ now works as required in the presence of side-effecting
4340 symbol-macro places;
4341 ** NCONC accepts any object as its last argument;
4342 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4344 ** loop-for-as-package does not require a package to be explicitely
4346 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4348 * fixed bug 166: compiler preserves "there is a way to go"
4349 invariant when deleting code.
4350 * fixed bug 172: macro lambda lists with required arguments after
4351 &REST arguments now cause an error to be signalled. (thanks to
4353 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4354 bug. (thanks to Matthew Danish)
4355 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4357 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4358 arguments are lexically rebound. (thanks to Gerd Moellmann and
4360 * fixed bug 194: error messages are now more informative when there
4361 is no primary method applicable in a call to a generic
4362 function. (thanks to Gerd Moellmann)
4363 * fixed bug in command line argument checking (thanks to Julian
4365 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4366 (thanks to Matthew Danish)
4367 * incremented fasl file version number, because of the
4368 SXHASH-related changes in the layout of CLOS data structures
4370 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4371 * minor incompatible change: The runtime (the Unix executable named
4372 "sbcl") is now much pickier about the .core files it will load.
4373 Essentially it now requires .core files to descend from the same
4374 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4375 as the runtime does. (The intent is to prevent the crashes which
4376 can occur, and which can even be reported as mysterious failures,
4377 when people patch the sources or change the build parameters
4378 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4379 sbcl and .core files.)
4380 * fixed bug: VALUES-LIST is no longer optimized away.
4381 * fixed bug 142: The FFI conversion of C string values to Lisp
4382 string values no longer conses excessively. (thanks to Nathan
4383 Froyd porting Raymond Toy's fix to CMU CL)
4384 * began to systematize and improve MOP conformance in PCL (thanks to
4385 Nathan Froyd, Gerd Moellman and Pierre Mai):
4386 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4388 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4389 ** FINALIZE-INHERITANCE is now called on class finalization;
4390 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4391 argument precedence order.
4392 * fixed bug 202: The compiler no longer fails on functions whose
4393 derived types contradict their declared type.
4394 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4395 so it can be non-toplevel.
4396 * The fasl file version number has changed (because of the new
4397 implementation of DEFMACRO).
4398 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4399 safe code, that any length requirement by their type-specifier
4400 argument is valid. The exceptions to this are described in bug
4402 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4403 functions now check the types of their inputs as required by ANSI.
4404 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4405 introduced symbol is DECLAREd to be SPECIAL.
4406 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4407 * fixed bug: :COUNT argument to sequence functions may be negative
4408 * fixed bug: body of DO-SYMBOLS may contain declarations
4409 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4410 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4411 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4412 symbol macro only once
4413 * fixed printing of call frame when argument list is unavailable
4414 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4415 * compiler no longer signals WARNING on unknown keyword
4418 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4419 * A beta-quality port to the mips architecture running Linux,
4420 based on the old CMUCL backend, has been made. It has been tested
4421 on a big-endian kernel, and works sufficiently well to be able to
4422 rebuild itself; it has not been tested in little-endian mode.
4423 * fixed an inconsistency between gencgc.c and purify.c which made
4424 dumping/loading .core files unreliable
4425 * fixed bug 120a: The compiler now deals correctly with IFs where
4426 the consequent is the same as the alternative, instead of
4427 misderiving the return type. (thanks to Alexey Dejneka)
4428 * fixed bug 113: Logical pathnames are now dumpable (the logical
4429 host is resolved at load-time, throwing an error if it is not
4431 * fixed bug 174: FORMAT's error message is slightly clearer when a
4432 non-printing character is used in a format directive.
4433 * fixed several bugs in compiler checking of type declarations, i.e.
4434 violations of the Python "declarations are assertions" principle
4435 (thanks to Alexey Dejneka)
4436 * fixed several bugs in PCL's error checking (thanks to Gerd
4438 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4440 * fixed bug in compilation of functions as first class values
4441 (thanks to Antonio Martinez-Shotton)
4442 * The compiler's handling TYPE-ERRORs which it can prove will
4443 inevitably happen at runtime has been cleaned up and corrected
4444 in several ways. (thanks to Alexey Dejneka)
4445 * improved argument type checking for various basic arithmetic
4446 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4447 lavished on them in the past that they can be compiled in many
4448 ways in different special cases
4449 * fixed bug 181: compiler checks validity of user supplied type
4451 * cleaned up code flushing in optimization: Function calls which
4452 should signal errors for safety purposes (e.g. which ANSI says
4453 should signal errors when their arguments are of incorrect type)
4454 are no longer optimized away.
4455 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4456 * incremented fasl file version number, because changes in the
4457 implementation of sequence functions like COERCE caused
4458 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4459 in old inline expansions) to become undefined. (Actually these
4460 changes were later undone, so we might very well be binary
4461 compatible with 0.7.7 after all, but leaving the version number
4462 incremented seemed like the simplest and most conservative
4465 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4466 * An alpha-quality port to the parisc architecture running Linux,
4467 based on the old CMUCL backend, has been made. This, even more so
4468 than the other backends, should be considered still a work in
4469 progress; known problems include that the Linux kernel in 64-bit
4470 mode does not propagate the correct sigcontext structure to
4471 userspace, and consequently SBCL on a parisc64 kernel will not
4473 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4474 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4475 suppressed.) Also now that the compiler is looking at declarations
4476 in the environment, it checks optimization declarations as well,
4477 and suppresses inlining when (> DEBUG SPEED).
4478 * More fixes have been made to treatment of floating point exception
4479 treatment and other Unix signals. In particular, floating point
4480 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4481 * The detection and handling of control stack exhaustion (infinite
4482 or very deeply nested recursion) has changed. Stack exhaustion
4483 detection is now done by write-protecting pages at the OS level
4484 and applies at all optimization settings; when found, a
4485 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4486 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4487 be caught using IGNORE-ERRORS.
4488 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4489 correctly when transforming recursive LABELS functions to LETs.
4490 (thanks to Alexey Dejneka)
4491 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4492 that are names of constants or global variables.
4493 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4494 alien routines with docstrings.
4495 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4496 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4498 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4499 (thanks to Eric Marsden)
4500 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4501 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4502 * Bug fix: The SPARC backend can now compile functions involving
4503 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4504 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4505 to a functions expecting a PATHNAME-DESIGNATOR.
4506 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4507 lambda lists. (thanks to Alexey Dejneka)
4508 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4509 functions so that EXPORTing the name of the class doesn't cause
4510 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4511 to Antonio Martinez for reporting this)
4512 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4513 constant-folded without failing an assertion. (thanks to Einar
4514 Floystad Dorum for reporting this)
4515 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4516 types are now dealt with more correctly by the compiler.
4517 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4518 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4519 behaviour analogous to RENAME-FILE. This puts its behaviour more
4520 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4522 * The fasl file version number has changed again. (because of the
4523 bug fix involving the names of PCL MAKE-INSTANCE functions)
4525 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4526 * bug fix: Floating point exceptions are treated much more
4527 consistently on the x86/Linux and PPC/Linux platforms.
4528 * Array initialization with :INITIAL-ELEMENT is now much faster for
4529 cases when the compiler cannot open code the array creation, but
4530 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4531 array accesses have also seen a speed increase.
4532 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4533 specified. (This was at the root of some bad interactions between
4534 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4536 * bug fix: Internal error arguments for undefined functions are now
4537 computed correctly on the PPC/Linux platform.
4538 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4539 Raymond Toy's patch for CMU CL)
4540 * Support for the Solaris 9 operating environment has been included
4541 (thanks to Daniel Merritt)
4542 * A very ugly but hopefully complete draft of the missing FFI chapter
4543 of the manual has been created by reformatting the corresponding
4544 CMU CL manual chapter into (currently very ugly and incoherent)
4545 DocBook and bringing it up to date for SBCL behavior. Thus, the
4546 manual is now essentially complete, at least by my extreme
4547 once-and-only-once standards, whereby it's acceptable to refer to
4548 the doc strings of SB-EXT functions as the primary documentation.
4549 * The fasl file version number has changed again, due to cleanup of
4550 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4551 is no longer a static symbol.)
4553 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4554 * SBCL now builds with OpenMCL (version 0.12) as the
4555 cross-compilation host; also, more progress has been made toward
4556 bootstrapping under CLISP.
4557 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4559 * bug 158 fixed: The compiler can now deal with integer loop
4560 increments different from 1; fixing this turned out also to fix
4562 * bug 169 fixed: no more bogus warnings about using lexical bindings
4563 despite the presence of perfectly good SPECIAL declarations (thanks
4564 to David Lichteblau)
4565 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4566 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4567 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4569 * bug 180 fixed: Method combination specifications no longer ignore
4570 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4571 * bug fix: Structure type predicate functions now check their argument
4572 count as they should.
4573 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4574 correctly. (thanks to Pierre Mai)
4575 * minor incompatible change: The --noprogrammer option is deprecated
4576 in favor of the new --disable-debugger option, which is very similar.
4577 (The major difference is that it takes effect at a slightly different
4578 time at startup, causing handling of errors in --sysinit and
4579 --userinit files will be affected differently.) The
4580 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4581 been added to allow this functionality to be controlled from ordinary
4582 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4583 maintainers, who might want to run non-interactive scripts to
4584 build SBCL cores which will later be used interactively.)
4585 * minor incompatible change: The LOAD function no longer, when given
4586 a wild pathname to load, loads all files matching that pathname.
4587 Instead, an error of type FILE-ERROR is signalled.
4589 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4590 * bug 147 fixed: The compiler preserves its block link/count
4591 invariants more correctly now so that it doesn't crash. (thanks
4593 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4595 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4596 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4597 no-value-for-this-character as NIL (as specified by ANSI).
4598 * HOST-NAMESTRING on physical pathnames now returns a string that is
4599 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4600 (thanks to Christophe Rhodes)
4601 * The Alpha port handles icache flushing more correctly. (thanks to
4603 * More progress has been made toward bootstrapping under CLISP. (thanks
4604 to Christophe Rhodes)
4605 * The fasl file format has changed again, because dynamic loading
4606 on OpenBSD (which has non-ELF object files) motivated some cleanups
4607 in the way that foreign symbols are transformed and passed around.
4608 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4609 is no longer treated as whitespace by the reader, but instead as
4610 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4611 |A
\7fB|, instead of A as it used to.
4613 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4614 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4615 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4616 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4617 this as of 0.7.1.45, but was left out of the previous news section
4618 (thanks to Dan Barlow)
4619 * SBCL now runs on the Solaris operating system on SPARC architectures
4620 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4621 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4622 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4623 * SPARC backend cleanups, allowing builds of cores optimized for V8
4624 and V9 SPARCS, and also emission of code targeted to a particular
4625 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4627 * SBCL is closer to bootstrapping under CLISP, thanks to various
4628 fixes by Christophe Rhodes.
4629 * The fasl file format has changed again, to allow the compiler's
4630 INFO database to support symbol macros.
4631 * The user manual (in doc/) is formatted into HTML more nicely.
4632 (thanks to coreythomas)
4633 * The system is smarter about SUBTYPEP relationships, especially
4634 those involving NOT types (including types such as ATOM which are
4635 represented internally using NOT types). Thus SUBTYPEP is less
4636 likely to return (VALUES NIL NIL) in general, and in particular
4637 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4639 * The fasl file format has changed again, because the internal
4640 representation of types now includes a new slot to support the new
4641 SUBTYPEP-of-NOT-types logic.
4642 * (not a change in the main branch of SBCL, but a related prototype
4643 which can hopefully be merged into the main branch of SBCL in the
4644 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4645 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4646 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4647 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4648 dispatch macro character combinations. (thanks to Alexey Dejneka)
4649 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4650 that superficially look like logical namestrings correctly.
4651 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4653 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4654 default supplied-p) for &optional and &key arguments. (thanks to
4657 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4658 * incompatible change: The compiler is now less aggressive about
4659 tail call optimization, doing it only when (> SPACE DEBUG) or
4660 (> SPEED DEBUG). (This is an incompatible change because there are
4661 programs which relied on the old CMU-CL-style behavior to optimize
4662 away their unbounded recursion which will now die of stack overflow.)
4663 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4664 for non-GENCGC systems has been increased to 20M (since that
4665 seems much closer to the likely performance optimum for modern
4666 systems than the old 4M value was)
4667 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4668 and *DEBUG-PRINT-LEVEL*
4669 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4670 of CMU CL's support for SPARC, and various endianness and other
4671 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4672 * new syntactic sugar for the Unix command line: --load foo.bar is now
4673 an alternate notation for --eval '(load "foo.bar")'.
4675 ** The system now detects stack overflow and handles it gracefully,
4676 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4677 optimization settings. (This is a good thing in general, and
4678 its introduction in this version should be particularly timely
4679 for anyone whose code fails because of suppression of tail
4681 ** The system now hunts for the C variable "environ" in a more
4682 devious way, to avoid segfaults when the C library version differs
4683 between compile time and run time. (thanks to Christophe Rhodes)
4684 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4685 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4686 ** The compiler no longer issues bogus style warnings for undefined
4687 classes in the same source file as the DEFCLASSes which defined
4688 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4690 ** fixes in CONDITION class precedence list for undefined function
4691 errors (thanks to Alexei Dejneka)
4692 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4693 correctly. (thanks to Dan Barlow)
4694 ** portability fixes aiming at bootstrapping under CLISP (thanks
4695 to Dave McDonald and Christophe Rhodes)
4696 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4697 ** fixes in type translation and and type inference (thanks to
4699 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4700 ** various fixes in the new ports (thanks to Dan Barlow)
4701 * several changes related to debugging:
4702 ** suppression of tail recursion, as noted above
4703 ** stack overflow detection, as noted above
4704 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4705 is now the default. (For some time encapsulation has been more
4706 reliable than the breakpoint-based :ENCAPSULATE NIL
4707 implementation, at least on X86 systems; and I just noticed that
4708 encapsulation also seems closer to the spirit of the ANSI
4711 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4713 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4714 up properly again. (There was a packaging bug in 0.7.0 which
4715 left their definitions in SB-SYS::LOAD-FOREIGN and
4716 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4717 vital for most things which interface to C-level interfaces,
4718 like extensions working with sockets or databases or
4719 Perl-compatible regexes or whatever, and the need to fix
4720 this bug is the main reason that 0.7.1 was released so
4722 ** DEFGENERIC is now choosier about the methods it redefines, so that
4723 reLOADing a previously-LOADed file containing DEFGENERICs does
4724 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4725 cycle now works as it should. (thanks to Alexey Dejneka)
4726 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4727 fixed by Christophe Rhodes. (He actually submitted this patch
4728 months ago, and I delayed until after 0.7.0.)
4729 ** Bug 111 (internal compiler confusion about runtime checks on
4730 FUNCTION types) was fixed by Alexey Dejneka.
4731 * Some internal cleanups (getting rid of variables which aren't
4732 needed now that the byte interpreter is gone) caused the fasl
4733 file format number to change again.
4735 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4736 * major incompatible change: The default fasl file extension, i.e. the
4737 default extension for files produced by COMPILE-FILE, has changed
4738 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4740 ** There are many changes in the implementation of the compiler.
4741 SBCL is now essentially a compiler-only implementation of ANSI
4742 Common Lisp. EVAL still "interprets" a few special cases, but
4743 almost all the interesting cases are handled by creating
4744 a LAMBDA expression, calling COMPILE on it, then calling
4745 FUNCALL on the result.
4746 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4747 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4748 Since the code is newer, there might still be some new bugs
4749 (though not as many as before Martin Atzmueller's fixes:-). But
4750 the new code is substantially simpler and clearer, and hopefully
4751 any remaining bugs will be simpler, less fundamental, and more
4752 fixable then the bugs in the old code.
4753 ** The revised compiler is still a little unsteady on its feet.
4755 *** The debugging information it produces (particularly the names
4756 of FUNCTION objects) is sometimes much less useful than what
4757 the old compiler produced.
4758 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4759 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4760 within a MACROLET) has been temporarily weakened.
4761 ** There are new compiler optimizations for various functions:
4762 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4763 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4764 *** the math functions TRUNCATE, FLOOR, and CEILING
4765 *** the function-of-all-trades COERCE
4766 Mostly these should be transparent, but there's one
4767 potentially-annoying problem (bug 117): when the compiler
4768 inline-expands a function and does type analysis on the result,
4769 it can create control paths which have type mismatches, and
4770 when it can't prove that those control paths aren't taken,
4771 it will issue WARNINGs about the type mismatches. This is
4772 a particular problem in practice for the new sequence functions.
4773 It's not clear how this should be fixed, and for now, a
4774 workaround is given in the entry for 117 in the BUGS file.
4775 ** (Because of the interaction between the two previous items --
4776 occasional inlining problems and new inline expansions -- some
4777 of the new sequence function optimizations won't really kick in
4778 completely until debugging information, and then inlining, are
4779 straightened out in some future version.)
4780 * minor incompatible changes:
4781 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4782 DIRECTORY no longer implicitly promotes NIL slots of its
4783 pathname argument to :WILD. In particular, when you ask for the
4784 contents of a directory (which you used to be able to do without
4785 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4786 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4787 ** changes in behavior that ANSI explicitly defines to be
4788 implementation dependent:
4789 *** The new compiler-only implementation still conforms with ANSI,
4790 but acts a little different than before. Besides the obvious
4791 changes in performance tradeoffs (that the cost per form passed
4792 to EVAL has gone up, and the cost per form executed by EVAL
4793 has gone down), the behavior of the system changes a little
4794 because there are no longer any interpreted function objects.
4795 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4796 e.g. doing COMPILE on the output of interactive DEFUN is
4798 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4800 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4801 has changed from (:CL) to NIL.
4802 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4803 e.g. #\Newline and #\Tab, don't have names specified in the
4804 ANSI Common Lisp standard, is now based on their ASCII symbolic
4805 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4806 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4807 are no longer used for output.
4808 ** changes in internal implementation constants:
4809 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4810 4 million. (If your application spends a lot of time GCing and
4811 you have a lot of RAM, you might want to experiment with
4812 increasing it even more.)
4813 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4814 However, almost all old code should still continue to work without
4815 immediate update, as SB-C-CALL is now a (deprecated) nickname
4817 ** Old operator names in the style DEF-FOO are now deprecated in
4818 favor of new corresponding names DEFINE-FOO, for consistency with
4819 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4820 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4821 internal symbols, but a few supported extensions like
4822 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4823 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4824 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4825 etc. as you get deeper into recursive calls to the debugger
4826 command loop, instead of the old "5]", "5]]", "5]]]"
4827 sequence. (I was motivated to do this when squabbles between
4828 ILISP and SBCL left me very deeply nested in the debugger. In the
4829 short term, this change will probably provoke more ILISP/SBCL
4830 squabbles, but hopefully it will be an improvement in the long run.)
4831 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4832 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4833 function, since declaiming return types involving aliens is
4834 (1) annoyingly messy to do by hand and (2) vital to efficient
4835 compilation of code which calls such functions.
4836 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4837 longer reexported by the SB-EXT package. They're solely useful
4838 for alien code, so it seems more logical that you should get
4839 them from the SB-ALIEN package, not in SB-EXT.
4840 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4841 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4842 features. Instead, the code that they used to control is always
4843 built into the system.
4844 * many other bug fixes
4845 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4846 advantage of the new EVAL-WHEN stuff and to clean them up in
4847 general, and they are now more ANSI-compliant in a number of
4848 ways. Martin Atzmueller is responsible for a lot of this.
4849 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4851 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4852 *** correct ERROR type for various file operations
4853 *** some fixes for Lisp streams
4854 *** DEFMETHOD syntax checking
4855 *** changing old weird representation of debug information as
4856 strings (which, among their other deficiencies, don't transform
4857 correctly when you rename packages, and don't change their
4858 print representation when you change things like *PACKAGE*
4859 and *PRINT-LENGTH*) to symbols and lists of symbols
4860 He also made several improvements and fixed several bugs in DESCRIBE.
4861 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4863 *** misbehavior of WRITE-STRING/WRITE-LINE
4864 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4865 and several other LOOP problems as well
4866 *** DIRECTORY when similar filenames are present
4867 *** DEFGENERIC with :METHOD options
4868 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4869 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4870 *** argument ordering in FIND with :TEST option
4871 *** mishandled package designator argument in APROPOS-LIST
4872 *** various problems in the backquote readmacro
4873 *** a bug in APROPOS
4874 *** probably some others that I'm not describing very well here,
4875 since the CVS log documents them by reference to sbcl-devel
4876 messages, and the SourceForge archives aren't working well.:-(
4877 ** Dan Barlow improved the Alpha port (and is making progress on the
4878 PPC port, for those of you who think different).
4879 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4880 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4881 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4882 continues to work on the SPARC port (for those of you in a position
4883 to look down upon our little PC-compatible boxes from a great height).
4884 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4885 and uses that copy, rather than the current dynamic value, when
4886 it's trying to decide whether to truncate output. Thus e.g.
4887 (let ((*print-lines* 50))
4888 (pprint-logical-block (stream nil)
4890 (let ((*print-lines* 8))
4891 (print (aref possiblybigthings i) stream)))))
4892 should now truncate the logical block only at 50 lines, instead of
4893 often truncating it at 8 lines, as it did before.
4894 * The doc/cmucl/ directory, containing old CMU CL documentation
4895 from the time of the fork, is no longer part of the base system.
4896 SourceForge has shut down its anonymous FTP service, and with it
4897 my original plan for distributing the old CMU CL documentation
4898 there. For now, if you need these files you can download an old
4899 SBCL source release and extract them from it.
4900 * The fasl file version number changed again, for dozens of reasons,
4901 some of which are apparent above.
4903 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4904 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4905 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4906 patch, so that DISASSEMBLE output is much nicer.
4907 * The code in the SB-PROFILE package now seems reasonably stable.
4908 I still haven't decided what the final interface should look like
4909 (I'd like PROFILE to interact cleanly with TRACE, since both
4910 facilities use function encapsulation) but if you have a need
4911 for profiling now, you can probably use it successfully with
4912 the current CMU-CL-style interface.
4913 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4914 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4915 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4916 link now returns the dangling link itself, and for similar
4917 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4918 link itself. (In these cases the old code signalled an error and
4919 looped endlessly, respectively.) Thus, DIRECTORY now works even
4920 in the presence of dangling and cyclic symbolic links.
4921 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4922 is now a supported extension again, since the consensus on
4923 sbcl-devel was that it can be useful for ordinary development
4924 work, not just for debugging SBCL itself.
4925 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4926 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4927 that currently-defined functions might be redefined later with
4928 different return types.
4929 * Hash tables can be printed readably, as inspired by CMU CL code
4930 of Eric Marsden and SBCL code of Martin Atzmueller.
4931 * better error handling in CLOS method combination, thanks to
4932 Martin Atzmueller porting Pierre Mai's CMU CL patches
4933 * more overflow fixes for >16Mbyte I/O buffers
4934 * A bug in READ has been fixed, so that now a single Ctrl-D
4935 character suffices to cause end-of-file on character streams.
4936 In particular, now you only need one Ctrl-D at the command
4937 line (not two) to exit SBCL.
4938 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4940 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4941 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4942 does the right thing.
4943 * The implementation of some type tests, especially for CONDITION
4944 types, is now tidier and maybe faster, due to CMU CL code
4945 originally by Douglas Crosher, ported by Martin Atzmueller.
4946 * Some math functions have been fixed, and there are new
4947 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4948 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4949 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4950 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4951 likely to be built into sbcl-0.7.0.)
4952 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4953 CL, ported to SBCL by Martin Atzmueller)
4954 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4955 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4956 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4957 * There's a new slam.sh hack to shorten the edit/compile/debug
4958 cycle for low-level changes to SBCL itself, and a new
4959 :SB-AFTER-XC-CORE target feature to control the generation of
4960 the after-xc.core file needed by slam.sh.
4961 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4962 COMPILE-FILE is no longer supported, so that now every function
4963 gets an entry point, so that block compilation looks a little
4964 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4965 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4966 returns the number of bytes consed since the system started,
4967 rather than the number consed since the first time the function
4968 was called. (The new definition parallels ANSI functions like
4969 CL:GET-INTERNAL-RUN-TIME.)
4970 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4971 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4972 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4973 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4974 * Fasl file version numbers are now independent of the target CPU,
4975 since historically most system changes which required version
4976 number changes have affected all CPUs equally. Similarly,
4977 the byte fasl file version is now equal to the ordinary
4980 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4981 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4982 is no longer recognized. I apologize for this, because it was
4983 listed in SB-EXT as a supported extension, but I found that
4984 its existing behavior was poorly specified, as well as incorrectly
4985 specified, and it looked like too much of a mess to straighten it
4986 out. I have enough on my hands trying to get ANSI stuff to work..
4987 * many patches ported from CMU CL by Martin Atzmueller, with
4988 half a dozen bug fixes in pretty-printing and the debugger, and
4989 half a dozen others elsewhere
4990 * fixed bug 13: Floating point infinities are now supported again.
4991 They might still be a little bit flaky, but thanks to bug reports
4992 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4993 as flaky as they were.
4994 * The --noprogrammer command line option is now supported. (Its
4995 behavior is slightly different in detail from what the old man
4996 page claimed it would do, but it's still appropriate under the
4997 same circumstances that the man page talks about.)
4998 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4999 are now supported, and enabled by default. Thus, the compiler can
5000 handle many floating point and complex operations much less
5001 inefficiently. (Thus e.g. you can implement a complex FFT
5003 * The compiler now detects type mismatches between DECLAIM FTYPE
5004 and DEFUN better, and implements CHECK-TYPE more correctly, and
5005 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5006 thanks to patches from Martin Atzmueller.
5007 * various fixes to make the cross-compiler more portable to
5008 ANSI-conforming-but-different cross-compilation hosts (notably
5009 Lispworks for Windows, following bug reports from Arthur Lemmens)
5010 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5011 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5012 fixed thanks to Pierre Mai's CMU CL patches.
5013 * fixes to keep the system from overflowing internal counters when
5014 it tries to use i/o buffers larger than 16M bytes
5015 * fixed bug 45a: Various internal functions required to support
5016 complex special functions have been merged from CMU CL sources.
5017 (When I was first setting up SBCL, I misunderstood a compile-time
5018 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5019 * improved support for type intersection and union, fixing bug 12
5020 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5021 more obscure bugs as well
5022 * some steps toward byte-compiling non-performance-critical
5023 parts of the system, courtesy of patches from Martin Atzmueller
5024 * Christophe Rhodes has made some debian packages of sbcl at
5025 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5026 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5027 stable, but are nonetheless usable. When he's ready, I'd be happy
5028 to add them to the SourceForge "File Releases" section. (And if
5029 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5030 * new fasl file format version number (because of changes in
5031 internal representation of (OR ..) types to accommodate the new
5032 support for (AND ..) types, among other things)
5034 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5035 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5037 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5039 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5040 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5041 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5042 * DESCRIBE now works on structure objects again.
5043 * Most function call argument type mismatches are now handled as
5044 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5045 know whether the function will be redefined before the call is
5046 executed. (The compiler could flag local calls with full WARNINGs,
5047 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5048 it doesn't keep track of enough information to know whether calls
5049 are local in this sense.)
5050 * Compiler output is now more verbose, with messages truncated
5051 later than before. (There should be some supported way for users
5052 to override the default verbosity, but I haven't decided how to
5053 provide it yet, so this behavior is still controlled by the internal
5054 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5055 src/compiler/ir1util.lisp.)
5056 * Fasl file format version numbers have increased again, because
5057 support for the Gray streams extension changes the layout of the
5058 system's STREAM objects.
5059 * The Gray subclassable streams extension now works, thanks to a
5060 patch from Martin Atzmueller.
5061 * The full LOAD-FOREIGN extension (not just the primitive
5062 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5063 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5064 but like most other programs, it defaults to copying the Unix
5065 environment from the original process instead of starting the
5066 new process in an empty environment.
5067 * Extensions which manipulate the Unix environment now support
5068 an :ENVIRONMENT keyword option which doesn't smash case or
5069 do other bad things. The CMU-CL-style :ENV option is retained
5070 for porting convenience.
5071 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5072 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5074 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5076 * A patch from Martin Atzmueller seems to have solved the SIGINT
5077 problem, and as far as we know, signal-handling now works cleanly.
5078 (If you find any new bugs, please report them!)
5079 * The system no longer defaults Lisp source file names to types
5080 ".l", ".cl", or ".lsp", but only to ".lisp".
5081 * The compiler no longer uses special default file extensions for
5082 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5083 seems to expect a single default extension for all compiled code,
5084 and there's no compelling reason to try to stretch the standard
5085 to allow two different extensions.) Instead, byte-compiled files
5086 default to the same extension as native-compiled files.
5087 * Fasl file format version numbers have increased again, because
5088 a rearrangement of internal implementation packages made some
5089 dumped symbols in old fasl files unreadable in new cores.
5090 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5091 many fewer weird special cases.
5092 * Bug #17 (differing COMPILE-FILE behavior between logical and
5093 physical pathnames) has been fixed, and some related misbehavior too,
5094 thanks to a patch from Martin Atzmueller.
5095 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5096 by Tim Moore, ported to SBCL by Martin Atzmueller.
5097 * Martin Atzmueller fixed several filesystem-related problems,
5098 including bug #36, in part by porting CMU CL patches, which were
5099 written in part by Paul Werkowski.
5100 * More compiler warnings in src/runtime/ are gone, thanks to
5101 more patches from Martin Atzmueller.
5102 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5105 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5107 * DESCRIBE now works on CONDITION objects.
5108 * The debugger now handles errors which arise when trying to print
5109 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5111 * The build system now uses an additional file, customize-target-features.lisp,
5112 to allow local modifications to the target *FEATURES* list. (The point of
5113 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5114 debugging features enabled, without having to worry about propagating it
5115 into everyone's system when I do a "cvs update".) When no
5116 customize-target-features.lisp file exists, the target *FEATURES* list
5117 should be constructed the same way as before.
5118 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5119 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5120 warn about behavior which is undefined under the ANSI spec. Note: This
5121 is specified by ANSI, but it's not very popular with programmers.
5122 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5123 macro in the SBCL sources for an example of a workaround which you
5124 might use to make portable ANSI-standard code which does what you want.
5125 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5126 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5127 when it's used as a non-toplevel form. (This is required in order
5128 to implement the DEFCONSTANT-EQX macro.)
5129 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5130 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5131 funny things, due to bugs in the implementation of EVAL-WHEN
5132 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5133 non-toplevel DEFCONSTANTs are uncommon.)
5134 * The core file version number and fasl file version number have been
5135 incremented, because the old noncompliant DEFCONSTANT behavior involved
5136 calling functions which no longer exist, and because I also took the
5137 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5138 * fixed bug 1 (error handling before read-eval-print loop starts), and
5139 redid debugger restarts and related debugger commands somewhat while
5141 ** The QUIT debugger command is gone, since it did something
5142 rather different than the SB-EXT:QUIT command, and since it never
5143 worked properly outside the main toplevel read/eval/print loop.
5144 Invoking the new TOPLEVEL restart provides the same functionality.
5145 ** The GO debugger command is also gone, since you can just invoke
5146 the CONTINUE restart directly instead.
5147 ** The TOP debugger command is also gone, since it's redundant with the
5148 FRAME 0 command, and since it interfered with abbreviations for the
5150 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5152 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5153 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5154 some porting work by Martin Atzmueller)
5155 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5156 with a boatload of patches which he ported to SBCL. Now that those
5158 ** The system tries to make sure that its low-priority messages
5159 are prefixed by semicolons, to help people who like to use
5160 syntax highlighting in their ILISP buffer. (This patch
5161 was originally due to Raymond Toy.)
5162 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5163 patches originally written by Raymond Toy.
5164 ** The compiler understands coercion between single-value and
5165 multiple-VALUES type expressions better, getting rid of some very
5166 weird behavior, thanks to patches originally by Robert MacLachlan
5167 and Douglas Crosher.
5168 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5169 lambda lists, thanks to a patch originally by Pierre Mai.
5170 ** The system no longer bogusly warns about "abbreviated type
5172 ** The compiler gets less confused by inlining and RETURN-FROM,
5173 thanks to some patches originally by Tim Moore.
5174 ** The system no longer hangs when dumping circular lists to fasl
5175 files, thanks to a patch originally from Douglas Crosher.
5176 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5177 undefined function error.
5178 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5179 in structure slot initforms) for now, documented workaround instead:-|
5180 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5181 * fixed bug 5: added stubs for various Gray stream functions called
5182 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5183 installed, at least appropriate type errors are generated
5184 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5185 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5186 consistently in DEFMETHOD forms.
5187 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5188 it doesn't seem to affect SBCL after all
5189 * The C runtime system now builds with better optimization and many
5190 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5192 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5194 * The system is now under CVS at SourceForge (instead of the
5195 CVS repository on my home machine).
5196 * The new signal handling code has been tweaked to treat register
5197 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5198 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5199 downstream, e.g. in debug-int.lisp, has implicit dependencies
5200 on the unsignedness of integer representation of machine words,
5201 and that caused the system to bomb out with infinite regress
5202 when trying to recover from type errors involving signed values,
5203 e.g. (BUTLAST '(1 2 3) -1).)
5204 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5205 (This was one of the bugs Peter Van Eynde reported back in July.)
5206 * The system now uses code inspired by Colin Walters' O(N)
5207 implementation of MAP (from the cmucl-imp@cons.org mailing
5208 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5209 inline the MAP operation, and there is more than one
5210 sequence argument to the MAP call (so that it can't just
5211 do ETYPECASE once and for all based on the type of the
5212 single sequence argument). (The old non-inline implementation
5213 of the general M-argument sequence-of-length-N case required
5214 O(M*N*N) time when any of the sequence arguments were LISTs.)
5215 * The QUIT :UNIX-CODE keyword argument has been renamed to
5216 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5217 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5219 * Raymond Wiker's patches to port dynamic loading from Linux to
5220 FreeBSD have been added.
5221 * The BUGS file is now more nearly up to date, thanks in large part
5222 to Martin Atzmueller's review of it.
5223 * The debugger now flushes standard output streams before it begins
5224 its output ("debugger invoked" and so forth).
5225 * The core version number and fasl file version number have both
5226 been incremented, because of incompatible changes in the layout
5228 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5229 used to not be called for a saved Lisp image.)
5230 * Martin Atzmueller's version of a patch to fix a compiler crash,
5231 as posted on sbcl-devel 13 September 2000, has been installed.
5232 * Instead of installing Martin Atzmueller's patch for the
5233 compiler transform for SUBSEQ, I deleted the compiler transform,
5234 and transforms for some similar consing operations.
5235 * A bug in signal handling which kept TRACE from working on OpenBSD
5237 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5238 away by constant folding
5239 * The system now defines its address space constants in one place
5240 (in the Lisp sources), and propagates them automatically elsewhere
5241 (through GENESIS and the sbcl.h file). Therefore, patching the
5242 address map is less unnecessarily tedious and error-prone. The
5243 Lisp names of address space constants have also been systematized.
5244 * CVS tags like dollar-Header-dollar have been removed from
5245 the sources, because they have never saved me trouble and
5246 they've been source of trouble working with patches and other
5247 diff-related operations.
5248 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5249 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5251 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5253 * The system has been ported to OpenBSD.
5254 * The system now compiles with a simple "sh make.sh" on the systems
5255 that it's supported on. I.e., now you no longer need to tweak
5256 text in the target-features.lisp-expr and symlinks in src/runtime/
5257 by hand, the make.sh takes care of it for you.
5258 * The system is no longer so grossly inefficient when compiling code
5259 involving vectors implemented as general (not simple) vectors (VECTOR T),
5260 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5261 which dares to use the various sequence functions on non-simple
5262 vectors, takes less of a performance hit.
5263 * There is now a primitive type predicate VECTOR-T-P
5264 to test for the (VECTOR T) type, so that e.g.
5265 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5266 can now be compiled with some semblance of efficiency. (The old code
5267 turned the type declaration into a full call to %TYPEP at runtime!)
5268 * AREF on (VECTOR T) is still not fast, since it's still compiled
5269 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5270 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5271 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5272 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5273 without making full calls to SUBTYPEP at runtime.
5274 (Some analogous efficiency issues for non-simple vectors specialized to
5275 element types other than T, or for non-simple multidimensional arrays,
5276 have not been addressed. They could almost certainly be handled the
5277 same way if anyone is motivated to do so.)
5278 * The changes in array handling break binary compatibility, so
5279 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5280 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5281 instead of (VALUES T T).
5282 * By following the instructions that Dan Barlow posted to sbcl-devel
5283 on 2 July 2000, I was able to enable primitive dynamic object
5284 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5285 functionality is not implemented (since it calls ld to resolve
5286 library references automatically, requiring RUN-PROGRAM for its
5287 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5288 try to resolve library references) is now supported.
5289 * The system now flushes the standard output streams when it terminates,
5290 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5291 them at several other probably-convenient times, e.g. in each pass of
5292 the toplevel read-eval-print loop, and after evaluating a form given
5293 as an "--eval" command-line option. (These changes were motivated by a
5294 discussion of stream flushing issues on cmucl-imp in August 2000.)
5295 * The source transform for TYPEP of array types no longer assumes
5296 that an array whose element type is a not-yet-defined type
5297 is implemented as an array of T, but instead punts, so that the
5298 type will be interpreted at runtime.
5299 * There is now some support for cross-compiling in make.sh: each of
5300 the phases of make.sh has its own script. (This should be transparent
5301 to people doing ordinary, non-cross-compile builds.)
5302 * Since my laptop doesn't have hundreds of megabytes of memory like
5303 my desktop machine, I became more motivated to do some items on
5304 my to-do list in order to reduce the size of the system a little:
5305 ** Arrange for various needed-only-at-cold-init things to be
5306 uninterned after cold init. To support this, those things have
5307 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5308 symbols with such names are now uninterned after cold init).
5309 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5310 fasl files for cold load.
5311 ** Remove the old compiler structure pooling code (which used to
5312 be conditional on the target feature :SB-ALLOC) completely.
5313 ** Redo the representation of some data in cold init to be more compact.
5314 (I also looked into supporting byte compiled code at bootstrap time,
5315 which would probably reduce the size of the system a lot, but that
5316 looked too complicated, so I punted for now.)
5317 * The maximum signal nesting depth in the src/runtime/ support code has
5318 been reduced from 4096 to 256. (I don't know any reason for the very
5319 large old value. If the new smaller value turns out to break something,
5320 I'll probably just bump it back up.)
5321 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5323 * Many, many bugs reported by Peter Van Eynde have been added to
5324 the BUGS list; some have even been fixed.
5325 * While enabling dynamic object file loading, I tried to make the
5326 code easier to understand, renaming various functions and variables
5327 with less ambiguous names, and changing some function calling
5328 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5329 * While trying to figure out how to do the OpenBSD port, I tried to
5330 clean up some of the code in src/runtime/. In particular, I dropped
5331 support for non-POSIX signal handling, added various comments,
5332 tweaked the code to reduce the number of compilation warnings, and
5333 renamed some files to increase consistency.
5334 * To support the new automatic configuration functionality in make.sh,
5335 the source file target-features.lisp-expr has been replaced with the
5336 source file base-target-features.lisp-expr and the machine-generated
5337 file local-target-features.lisp-expr.
5338 * fixed a stupid quoting error in make.sh so that using CMU CL
5339 "lisp -batch" as cross-compilation host works again
5341 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5343 * DESCRIBE no longer tries to call itself recursively to describe
5344 bound/fbound values, so that it no longer fails on symbols which are
5345 bound to themselves (like keywords, T, and NIL).
5346 * DESCRIBE now works on generic functions.
5347 * The printer now prints less-screwed-up representations of closures
5348 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5349 * A private symbol is used instead of the :EMPTY keyword previously
5350 used to mark empty slots in hash tables. Thus
5351 (DEFVAR *HT* (MAKE-HASH-TABLE))
5352 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5353 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5354 now does what ANSI says that it should. (You can still get
5355 similar noncompliant behavior if bang on the hash table
5356 implementation with all the symbols you get back from
5357 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5358 This breaks binary compatibility, since tests for equality to
5359 :EMPTY are wired into things like the macroexpansion of
5360 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5362 * There's now a minimal placeholder implementation for CL:STEP,
5363 as required by ANSI.
5364 * An obscure bug in the interaction of the normal compiler, the byte
5365 compiler, inlining, and structure predicates has been patched
5366 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5367 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5369 * Missing ordinary arguments in a macro call are now detected even
5370 when the macro lambda list contains &KEY or &REST.
5371 * The debugger no longer complains about encountering the top of the
5372 stack when you type "FRAME 0" to explicitly instruct it to go to
5373 the top of the stack. And it now prints the frame you request even
5374 if it's the current frame (instead of saying "You are here.").
5375 * As specified by ANSI, the system now always prints keywords
5376 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5378 * The default initial SIZE of HASH-TABLEs is now smaller.
5379 * Type information from CLOS class dispatch is now propagated
5380 into DEFMETHOD bodies, so that e.g.
5381 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5383 is now basically equivalent to
5384 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5385 (DECLARE (TYPE SINGLE-FLOAT X))
5387 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5388 operation, without having to do run-time type dispatch.
5389 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5390 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5391 * Since I don't seem to be making big file reorganizations very often
5392 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5393 is overflowing my ability to conveniently back them up), I've finally
5394 checked the system into CVS. (The CVS repository is on my home system,
5395 not at SourceForge -- putting it on SourceForge might come later.)
5396 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5397 high-level GC-NOTIFY-FOO functions send their output. (There's
5398 still very little control of where low-level verbose GC functions
5399 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5400 less than it used to -- the GC-NOTIFY-FOO functions are now under
5401 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5402 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5403 in only one place in the source code, and propagates it automatically
5404 everywhere that it's needed. Thus e.g. when I bump the version from
5405 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5406 * The C source files now include boilerplate legalese and documentation
5407 at the head of each file (just as the Lisp source files already did).
5408 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5409 to his page will be replaced with a link to his new CLiki service.
5411 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5413 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5414 * The build process now looks for GNU make under the default name "gmake",
5415 instead of "make" as it used to. If GNU make is not available as "gmake"
5416 on your system, you can change this default behavior by setting the
5417 GNUMAKE environment variable.
5418 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5419 can build without error under CMU CL.
5421 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5423 * There is now a partial SBCL user manual (with some new text and some
5424 text cribbed from the CMU CL manual).
5425 * The beginnings of a profiler have been added (starting with the
5426 CMU CL profiler and simplifying and cleaning up). Eventually the
5427 main interface should be through the TRACE macro, but for now,
5428 it's still accessed through vaguely CMU-CL-style functions and macros
5429 exported from the package SB-PROFILE.
5430 * Some problems left over from porting CMU CL to the new
5431 cross-compilation bootstrap process have been cleaned up:
5432 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5433 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5434 part when getting rid of the compiler *BACKEND* stuff.)
5435 ** The value of *NULL-TYPE* was screwed up, because it was
5436 being initialized before the type system knew the final
5437 definition of the 'NULL type. This screwed up several key
5438 optimizations in the compiler, causing inefficiency in all sorts
5439 of places. (I found it because I wanted to understand why
5440 GET-INTERNAL-RUN-TIME was consing.)
5441 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5442 PROCLAIM FTYPE information. Unfortunately this broke binary
5443 compatibility again, since now the forms output by DEFGENERIC
5444 to refer to functions which didn't exist in 0.6.3.
5445 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5446 can use the new (as of 0.6.3) transform for SOME into MAP into
5448 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5449 values to (INTEGER 0 1000000), so that the time code will no longer
5450 occasionally get blown up by Linux returning 1000000 microseconds
5451 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5452 its output conform to the ANSI spec. (Alas, this makes its output
5453 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5454 * A full call to MAP NIL with a single sequence argument no longer conses.
5455 * fixes to problems pointed out by Martin Atzmueller:
5456 * The manual page no longer talks about multiprocessing as though
5457 it were currently supported.
5458 * The ILISP support patches have been removed from the distribution,
5459 because as of version 5.10.1, ILISP now supports SBCL without us
5460 having to maintain patches.
5461 * added a modified version of Raymond Toy's recent CMU CL patch for
5462 EQUALP comparison of HASH-TABLE
5464 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5466 * The system still can't cross-compile itself with
5467 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5468 entails), but at least it can compile more of itself that way
5469 than it used to be able to, and various buglets which were uncovered
5470 by trying to cross-compile itself that way have now been fixed.
5471 * This release breaks binary compatibility again. This time
5472 at least I've incremented the FASL file format version to 2, so that the
5473 problem can be detected reliably instead of just causing weird errors.
5474 * various new style warnings:
5475 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5476 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5477 ** using the lexical binding of a variable named in the *FOO* style
5478 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5479 as specified by ANSI.
5480 * *RANDOM-STATE* is no longer automatically initialized from
5481 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5482 default behavior of the system is to repeat its behavior every time
5483 it's run. If you'd like to change this behavior, you can always
5484 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5485 old convention there was no comparably easy way to get the system to
5486 repeat its behavior every time it was run.
5487 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5488 FTYPE declarations has been removed, in favor of their ANSI
5489 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5490 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5491 the types of their sequence arguments can be determined at compile time.
5492 This is done through a new open code expansion for MAP which eliminates
5493 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5494 argument types can be determined at compile time.
5495 * The optimizer now transforms COERCE into an identity operation when it
5496 can prove that the coerced object is already of the correct type. (This
5497 can be a win for machine generated code, including the output of other
5498 optimization transforms, such as the MAP transform above.)
5499 * Credit information has been moved from source file headers into CREDITS.
5500 * Source file headers have been made more standard.
5501 * The CASE macro now compiles without complaining even when it has
5504 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5506 * (Note that the way that the PCL macroexpansions were rewritten
5507 to accommodate the change in DEFGENERIC below breaks binary
5508 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5509 not run under sbcl-0.6.2. Once we get out of alpha releases,
5510 i.e. hit release 1.0.0, we'll probably try to maintain binary
5511 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5512 and sbcl-1.4.4. Until then, however, it might be fairly common
5513 for maintenance releases to break binary compatibility.)
5514 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5516 * The reporting of unhandled signals has been changed to print some
5517 explanatory text as well as the report form. (Previously only
5518 the report form was printed.)
5519 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5520 it defines, so that the compiler no longer issues undefined function
5521 warnings for compiled-but-not-yet-loaded generic functions.
5522 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5523 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5524 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5525 section of the ANSI spec are supported.
5526 * The "" nickname for the "KEYWORD" package has been removed.
5527 The reader still handles symbol tokens which begin with a package marker
5528 as keywords, but it doesn't expose its mechanism for doing so in the
5529 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5530 * The system now issues STYLE-WARNINGs for contradictory TYPE
5531 proclamations. (Warnings for contradictory FTYPE proclamations would
5532 be nice too, but those can't be done usefully unless the type system
5533 is made smarter about FUNCTION types.)
5534 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5535 systematized, so that "*target-*.lisp is supposed to exist only on the
5536 target and imply that there's a related file which exists on the
5537 host, and *host-*.lisp is supposed to exist only on the host and imply
5538 that there's a related file which exists on the target. This involves a
5539 lot of renaming. Hopefully the acute confusion caused by the renaming
5540 will be justified by the reduction in chronic confusion..
5541 ** runtime-type.lisp -> early-target-type.lisp
5542 ** target-type.lisp -> late-target-type.lisp
5543 ** early-host-format.lisp -> early-format.lisp
5544 ** late-host-format.lisp -> late-format.lisp
5545 ** host-error.lisp -> misc-error.lisp
5546 ** early-error.lisp -> early-target-error.lisp
5547 ** late-error.lisp -> late-target-error.lisp
5548 ** host-defboot.lisp -> early-defboot.lisp
5549 ** code/misc.lisp -> code/target-misc.lisp
5550 ** code/host-misc.lisp -> code/misc.lisp
5551 ** code/numbers.lisp -> code/target-numbers.lisp
5552 ** code/early-numbers.lisp -> numbers.lisp
5553 ** early-host-type.lisp -> early-type.lisp
5554 ** late-host-type.lisp -> late-type.lisp
5555 ** host-typep.lisp -> typep.lisp
5556 ** load.lisp -> target-load.lisp
5557 ** host-load.lisp -> load.lisp
5558 ** host-disassem.lisp -> disassem.lisp
5559 ** host-insts.lisp -> insts.lisp
5560 ** byte-comp.lisp -> target-byte-comp.lisp
5561 ** host-byte-comp.lisp -> byte-comp.lisp
5562 ** host-signal.lisp -> signal.lisp
5563 ** host-defstruct.lisp -> defstruct.lisp
5564 ** late-target-type.lisp -> deftypes-for-target.lisp
5565 Furthermore, several other previously target-only files foo.lisp (e.g.
5566 hash-table.lisp and random.lisp) have been split into a target-and-host
5567 foo.lisp file and a target-only target-foo.lisp file, with their key type
5568 definitions in the target-and-host part, so that the cross-compiler will
5569 know more about target types.
5570 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5571 gone away. In their place are various *BACKEND-FOO* variables
5572 corresponding to the slots of the old structure.
5573 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5574 into the target SBCL has been fixed.
5575 * The chill.lisp system for loading cold code into a running SBCL
5577 * Support for the CMU CL "scavenger hook" extension has been removed.
5578 (It was undocumented and unused in the CMU CL sources that SBCL was
5579 derived from, and stale in sbcl-0.6.1.)
5580 * Various errors in the cross-compiler type system were detected
5581 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5582 (enabling various consistency checks). Many of them were fixed,
5583 but some hard problems remain, so the compiler is back to
5584 running without *TYPE-SYSTEM-INITIALIZED* for now.
5585 * As part of the cross-compiler type system cleanup, I implemented
5586 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5587 * I have started adding UNCROSS calls throughout the type system
5588 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5589 on cross-compiler input files will be able to go away, and various
5591 * CONSTANTP now returns true for quoted forms (as explicitly required
5594 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5596 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5597 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5598 (MAKE-LIST -1). In the longer term, it ought to become true
5599 that declarations are assertions even at SAFETY 1. For now, it's not
5600 quite true even at SAFETY 3, but it's at least more nearly true..
5601 (Note that this change seems to increases the size of the system by
5602 O(5%) and to decrease the speed of the compiler by 20% or more.)
5603 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5604 for the problem of printing dozens of lines of distracting information
5605 about low-level system machinery as part of the top stack frame
5606 on entry to the debugger when an undefined function was called.
5607 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5608 is not reset to COMMON-LISP-USER.
5609 * Compilation of stuff related to dyncount.lisp has been made conditional
5610 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5611 smaller. The various dyncount-related symbols have been moved into
5612 a new "SB-DYNCOUNT" package.
5613 * tty-inspect.lisp has been renamed to inspect.lisp.
5614 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5615 feature has gone away. (When we eventually port to other flavors of
5616 libc and/or Unix, we'll try to make the differences between flavors
5617 invisible at the user level.)
5618 * Various other *FEATURES* tags, and/or their associated conditionals,
5619 have been removed if obsolescent, or given better documentation, or
5620 sometimes given more-mnemonic names.
5622 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5624 * tidied up "make.sh" script
5625 * tidied up system directory structure
5626 * better "clean.sh" behavior
5627 * added doc/FOR-CMUCL-DEVELOPERS
5628 * many many small tweaks to output format, e.g. removing possibly-confusing
5629 trailing #\. character in DESCRIBE-INSTANCE
5630 * (EQUALP #\A 'A) no longer signals an error.
5631 * new hashing code, including EQUALP hashing
5632 * tidied up Lisp initialization and toplevel
5633 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5634 * command line argument processing
5635 * added POSIX-GETENV function to deal with Unix-ish environment variables
5636 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5637 terminating SBCL on EOF
5638 * non-verbose GC by default
5639 * There is no more "sbcl" shell script; the sbcl file is now the C
5640 runtime executable (just like CMU CL).
5641 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5643 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5644 symbol and package information as Lisp native symbol and package objects
5645 instead of strings naming symbols and strings naming packages. This way,
5646 whenever packages are renamed (as in warm init), debug information is
5647 transformed along with everything else.
5648 * tweaked the optimization policy declarations which control the building
5649 of SBCL itself. Now, among other things, the system no longer saves
5650 source location debugging information. (This helps two problems at once
5651 by reducing SBCL size and by keeping SBCL from trying to look for its
5652 sources -- which may not exist -- when reporting errors.)
5653 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5654 debugging and testing purposes
5655 * cleaned up printing, making the printer call PRINT-OBJECT for
5656 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5657 methods, giving nearly-ANSI behavior
5658 * converted almost all special variables to use *FOO* naming convention
5659 * deleted PARSE-TIME functionality, since it can be done portably
5660 * moved some files out of cold init into warm init
5661 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5663 * regularized formatting of source files
5664 * added an install.sh script
5665 * fixed ridiculous memory usage of cross-compiler by making
5666 compiler/alloc.lisp not try to do pooling unless it can hook
5667 itself into the GC of the cross-compilation host. Now the system
5668 builds nicely on my old laptop.
5669 * added :SB-ALLOC in target-features.lisp-expr
5670 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5671 was not implemented)
5672 * re-did condition handling and note reporting in the compiler. Notes
5673 are no longer handled by signalling conditions. Style warnings
5674 and warnings are handled more correctly and reported in such a way
5675 that it's easy to find one or the other in your output (so that you
5676 can e.g. figure out which of many problems caused COMPILE-FILE to
5678 * changed the severity of several compiler warnings from full WARNING
5679 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5680 compiler note reporting so that it doesn't use the condition system
5681 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5682 COMPILE-FILE command)
5683 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5684 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5685 no longer supported, since their implementation was deeply intertwingled
5686 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5687 * removed bogus "support" for compiler macros named (SETF FOO), and
5688 removed the compiler macro for SETF INFO (but only after making a fool
5689 of myself on the cmucl-imp mailing list by posting a bogus patch for
5690 DEFINE-COMPILER-MACRO..)
5691 * Compiled files containing forms which have side effects on the Lisp
5692 reader (such as DEFPACKAGE forms) are now handled more correctly.
5693 (Compiler queuing of top level lambdas has been suppressed by setting
5694 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5695 * deleted various currently-unused source files, e.g. gengc.lisp. They
5696 may be added back at some point e.g. when porting to other architectures,
5697 but until they are it's distracting to distribute them and to try to
5699 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5700 there were so many of them they're just distractions, and UNCROSS is
5701 known to be able to handle the current sources
5702 * moved PROFILE functionality into TRACE, so that it will be clear
5703 how the wrapping and unwrapping of functions when you profile them
5704 interacts with the wrapping and unwrapping of functions when you
5705 trace them. (Actually, the functionality isn't there yet, but at least
5706 the interface specification is there. Hopefully, the functionality will
5707 arrive with some future maintenance release.)
5708 * removed host-oops.lisp
5709 * changed signature of QUIT function to allow UNIX-CODE argument
5710 * fixed READ-SEQUENCE bug
5711 * tweaked verbose GC output so that it looks more like the progress
5712 output that ANSI specifies for functions like LOAD
5713 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5714 * added <http://sbcl.sourceforge.com> to the banner information printed by