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 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
44 * bug fix: a rare case of startup-time page table corruption.
45 * bug fix: a semaphore with multiple waiters and some of them unwinding due
46 to timeouts could be left in an inconsistent state.
47 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
48 * bug fix: misoptimization of multiplication by one in
49 (SB-C::FLOAT-ACCURACY 0) policies.
50 * bug fix: miscounts in SB-PROFILE.
51 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
52 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
53 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
54 up itself" (March 2010) for further details.
55 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
56 against length of the list if the element is found before the specified
57 END is reached. (thanks to Alec Berryman, lp#554385)
58 * bug fix: errors signalled during package graph modification no longer
59 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
60 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
61 :SB-DOC feature. (lp#552564)
62 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
64 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
65 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
66 stack frame thrown from.
67 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
68 compiler optimization qualities inside dynamic extent of its body.
69 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
70 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
72 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
73 constraint propgation, allowing better compilation eg. when used to
74 access structures with WITH-SLOTS. (lp#520366)
75 * optimization: the compiler is now more aware of the type of the underlying
76 storage vector for multidimensional simple arrays resulting in better code
77 for accessing such arrays.
78 * optimization: passing NIL as the environment argument to TYPEP no longer
79 inhibits optimizing it. (lp#309788)
80 * optimization: more efficient register usage when handling single-float
81 arguments on x86-64. (thanks to Lutz Euler)
82 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
83 pre-allocated temporary vectors. (lp#496249)
84 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
85 in :INITIAL-CONTENTS. (lp#523612)
86 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
87 functions. (lp#524707)
88 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
89 WITH-SLOTS usages during compilation.
90 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
91 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
92 all x86oid platforms with :UD2-BREAKPOINTS target feature.
93 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
94 instruction (tested on x86oid linux with ud2-breakpoints).
95 * bug fix: slam.sh now works on win32.
96 * bug fix: better differences of numeric types. (lp#309124)
97 * bug fix: arrays declared intersection and union types can have their
98 upgraded element type derived. (lp#316078)
99 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
100 threads started during profiling. (lp#472499)
101 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
103 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
104 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
105 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
106 values instead of signaling an error. (lp#309093)
107 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
109 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
110 declarations (lp#497321)
111 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
112 and failed to detect circular lists (lp#452008)
113 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
115 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
116 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
117 due to it, so that handlers can run.
118 * bug fix: reparsing undefined types if they have become defined since
120 * bug fix: missing &REST type in a proclamation for a function with both
121 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
122 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
123 expanded calls (lp#542174)
124 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
125 than just at toplevel form.
127 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
128 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
129 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
130 but work on type specifiers.
131 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
132 to name a type specifier.
133 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
134 specifier is valid where "valid" basically means "would be accepted as
135 second argument of TYPEP".
136 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
137 returns the function's declared, or derived FTYPE.
138 * new feature: SB-POSIX now supports accessing the d_ino member of
139 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
140 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
141 provide for seeding a RANDOM-STATE object with user-provided data or
142 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
143 attempt to initialize the returned state from the operating system's
144 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
145 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
146 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
147 * bug fix: Fix grammar and style issues for the docstrings of
148 printer-related variables and functions. (Thanks to mon_key; launchpad
150 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
152 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
153 in a row even though a handler defered the deadline long into the
155 * bug fix: A deadline handler was run without interrupts enabled for a
156 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
157 in infinitely spinning, non-killable threads.
158 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
159 before reaching the erring stack frame.
160 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
161 real power. (launchpad bug lp#525949)
162 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
163 GENCGC platforms. (launchpad bug lp#529014)
164 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
165 (launchpad bug lp#525916)
166 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
167 (Thanks to Robert Goldman)
169 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
170 * optimization: ROUND with a single single-float or double-float argument
171 is properly inlined when possible.
172 * optimization: Slightly better code is generated for integer<->float
173 conversions and for single-float<->double-float conversions on x86-64.
174 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
175 code for 32-bit and 64-bit rotations on x86-64.
176 * bug fix: The install script changes the ownership of directories as well
177 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
178 launchpad bug lp#508485)
179 * bug fix: TRUNCATE with a single single-float or double-float argument is
180 properly inlined when possible. (launchpad bug lp#489388)
181 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
182 no longer causes a compiler error on x86 and ppc.
183 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
184 always relative to *READTABLE* rather than the passed argument.
186 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
187 * minor incompatible change: threading support is now enabled by default
189 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
191 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
192 are now caught and reported just like errors during macroexpansion.
193 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
194 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
195 * enhancement: ASDF systems can now depends on SB-QUEUE.
196 * fixes and improvements related to Unicode and external formats:
197 ** bug fix: error handling and restart usage in the ucs-2 external format
199 ** there is now an implementation of the ucs-4 external format.
200 ** the utf-16 and utf-32 external formats are supported.
201 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
202 in the environment. setenv() and unsetenv() are also provided. (reported by
203 Fare Rideau; launchpad bug lp#460455)
204 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
205 loading. This ensures sensible errors for .FASL files from other
206 implementations on case-insensitive filesystems. (reported by Willem
207 Broekema; launchpad bug lp#489417)
208 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
209 Willem Broekema; launchpad bug lp#489698).
210 * bug fix: some minor code rearrangements to reenable warning-free building
211 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
212 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
214 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
217 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
218 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
219 * improvement: support O_LARGEFILE access to files larger than 2GB on
220 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
221 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
222 definitions for methods specializing on the passed class itself.
223 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
224 definitions for methods specializing on the passed class itself, or on
226 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
227 about itself during the build (e.g. for M-? in Slime), if this flag is
228 enabled in customize-target-features.lisp. This will increase the core
229 size by about 5-6mb, though, so it's mostly interesting to SBCL
231 * new feature: various GENCGC tuning parameters have been experimentally
232 documented and exported from SB-EXT. See documentation for details.
233 * fixes and improvements related to Unicode and external formats:
234 ** the Unicode character database has been upgraded to the
235 Unicode 5.2 standard, giving names and properties to a number of new
236 characters, and providing a few extra characters with case
238 ** improvement: restarts for providing replacement input/output on coding
239 errors for fd-stream external formats.
240 ** improvement: where :<encoding> is a keyword corresponding to an
241 external format the system supports, it is now possible to specify
242 (:<encoding> :replacement <character>) as an external format which will
243 automatically substitute <character> on encoding or decoding errors for
244 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
246 ** improvement: the file streams underlying the standard streams (such as
247 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
248 which uses the replacement mechanism to handle encoding errors,
249 preventing various infinite error chains and unrecoverable I/O
251 ** minor incompatible change: the utf-8 external format now correctly
252 refuses to encode Lisp characters in the surrogate range (char-codes
253 between #xd800 and #xdfff).
254 ** fix a typo preventing conversion of strings into octet vectors
255 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
257 ** fix a bug in the octet multibyte handling of decoding errors and the
258 USE-VALUE restart. (launchpad bug lp#314939)
259 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
260 restart on fd-stream decoding errors.
261 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
262 error is near the end of file.
263 ** fix a double-error case in unibyte octet conversions, when the first
264 use of USE-VALUE is ignored.
265 ** fix bugs in handling of undefined code points in unibyte encodings.
266 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
267 streams after an UNREAD-CHAR.
268 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
269 object is allocated in a boxed region of dynamic space.
270 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
271 fork with multiple Lisp threads running is made, instead of going
272 ahead with unpredictable consequences. (reported by Leslie Polzer)
273 * bug fix: uses of slot accessors on specialized method parameters within
274 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
275 error while finalizing the class. This fix may cause classes with slot
276 accessors to be finalized later than previously. (reported by Lars Rune
277 Nøstdal; launchpad bug lp#473699)
278 * bug fix: restore buildability on the MIPS platform. (regression from
279 1.0.30.38, reported by Samium Gromoff)
280 * bug fix: inspecting closures is less likely to fail with a type error.
281 * bug fix: no timer starvation when setting the system clock back.
282 (launchpad bug lp#460283)
283 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
284 standard pprint dispatch table as specified by CLHS.
285 * bug fix: give CLISP a hint about a type declaration to enable it to build
286 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
288 * bug fix: correctly dump literal objects in defaulting forms of arglists.
289 (reported by Attila Lendvai; launchpad bug lp#310132)
290 * bug fix: distinguish in type specifiers between arrays that might be
291 complex and arrays that are definitely complex. (launchpad bug lp#309129)
292 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
293 type. (reported by Levente Mészáros; launchpad bug lp#485972)
294 * bug fix: setting the value of a symbol-macro within a method in the
295 presence of type declarations works properly again. (reported by Iban
296 Hatchondo; launchpad bug lp#485019)
298 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
299 * optimization: faster FIND and POSITION on strings of unknown element type
300 in high SPEED policies. (thanks to Karol Swietlicki)
301 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
303 * improvement: better error signalling for bogus parameter specializer names
304 in DEFMETHOD forms (reported by Pluijzer)
305 * bug fix: DELETE-FILE once again works on logical pathnames (regression
307 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
309 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
310 removes previous default initargs (reported by Lars Rune Nøstdal and
312 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
313 lambda-lists. (reported by Peter Seibel)
314 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
315 correctly when starting from an executable core without saved runtime
316 options (reported by Faré Rideau, thanks to Zach Beane)
317 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
318 an optimization note instead. (reported by Martin Cracauer)
319 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
320 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
321 new process group if it doesn't need to share stdin with the sbcl
322 process. (thanks to Leslie Polzer)
323 * bug fix: SATISFIES could be misoptimized to refer to a local function.
324 (reported by Stanislaw Halik)
326 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
327 * improvement: stack allocation is should now be possible in all nested
328 inlining cases: failure to stack allocate when equivalent code is manually
329 open coded is now considered a bug.
330 * improvements related to Unicode:
331 ** the Unicode character database has been upgraded to the
332 Unicode 5.1 standard, giving names and properties to a number of new
333 characters, and providing a few extra characters with case
335 ** the system now recognizes and produces names for Unicode Hangul
337 ** the EBCDIC-US external-format is now supported for octet operations
338 (as well as for stream operations).
339 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
340 be used to output toplevel compile-time effects into a separate .CFASL
342 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
343 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
345 * optimization: TRUNCATE on known single- and double-floats is upto 25%
347 * optimization: division of floating point numbers by constants uses
348 multiplication by reciprocal when an exact reciprocal exists.
349 * optimization: multiplication of single- and double-floats floats by
350 constant two has been optimized.
351 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
352 sufficient type information is available. (thanks to Leslie Polzer)
353 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
354 known structure objects are as efficient as defstruct generated accessors.
355 * optimization: unused vector creation can now be optimized away.
356 * improvement: ASDF systems can now depends on SB-INTROSPECT.
357 * improvement: a STYLE-WARNING is signalled when a generic function
358 clobbers an earlier FTYPE proclamation.
359 * improvement: the compiler is able to track the effective type of
360 generic function across method addition and removal even in the
361 absence of an explicit DEFGENERIC.
362 * improvement: DESCRIBE now reports on symbols naming undefined
363 but assumed or declared function as well.
364 * improvement: recompilation of systems using SB-GROVEL now works
365 (thanks to Leslie Polzer)
366 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
367 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
369 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
370 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
371 well as user defined declaration names.
372 ** VARIABLE-INFORMATION is now aware of alien variables.
373 * improvement: improved address space layout on OpenBSD (thanks to Josh
375 * improvement: pretty-printing of various Lisp forms has been improved
376 (thanks to Tobias Rittweiler)
377 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
378 unused were deleted in safe code. (reported by John Fremlin)
379 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
381 * bug fix: some out-of-line array predicates were missing (reported by
383 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
385 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
386 (thanks to Larry D'Anna)
387 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
388 as well. (reported by Josh Elsasser)
389 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
390 leading to possible attempts to delete the same file twice. See docstring
391 on DELETE-FILE for details. (reported by John Fremlin)
392 * bug fix: DELETE-FILE once again deletes the file named by the pathname
393 designator argument, rather than its truename. (reported by Luis
395 * bug fix: the low-level debugger had 32-bit assumptions and was missing
396 information about some array types. (thanks to Luis Oliveira)
397 * bug fix: moderately complex combinations of inline expansions could
398 be miscompiled if the result was declared to be dynamic extent.
399 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
400 form (+ <variable> <integer>) were miscompiled under certain
402 * bug fix: in some cases no compiler note about failure to stack allocate
403 was emitted, even if the objects were in fact heap allocated.
404 * bug fix: minor violation of "otherwise inaccessible" rule for stack
405 allocation could cause objects users might reasonably expect to
406 be heap allocated to be stack allocated.
407 * bug fix: DESCRIBE signalled an error for generic functions under
408 certain circumstances. (thanks to Leslie Polzer)
409 * bug fix: Fixed spelling of an error message.
411 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
412 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
413 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
414 of SB-THREAD:THREAD-ERROR-THREAD.
415 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
416 * new feature: docstrings for local and anonymous functions are no longer
417 discarded. (thanks to Leslie Polzer)
418 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
419 values in other threads.
420 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
421 about object allocation.
422 * optimization: division of a real float by a complex float is implemented
423 with a specialised code sequence.
424 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
425 keywords is an order of magnitude faster.
426 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
427 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
428 methods, and similarly for non-standard metaclass classes as long as there
429 are no methods additional on MAKE-INSTANCE.
430 * optimization: more efficient type-checks for FIXNUMs when the value
431 is known to be a signed word on x86 and x86-64.
432 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
433 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
435 * optimization: compiler is smarter about delegating argument type checks to
437 * optimization: several character functions are now compiled somewhat more
438 efficiently. (reported by Lynn Quam)
439 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
440 * improvement: less unsafe constant folding in floating point arithmetic,
441 especially for mixed complex/real -float operations.
442 * optimization: constant double and single floats are stored in native
443 unboxed format on x86[-64].
444 * optimization: smarter code for arithmetic operations with constant floats,
445 complex floats, or integers on x86[-64].
446 * optimization: smarter code for conjugate/multiplication of float complexes
447 and abs/negate of floats on x86-64.
448 * optimization: more efficient complex float and real float operations on
450 * improvement: complex float division is slightly more stable.
451 * improvement: DESCRIBE output has been reworked to be easier to read and
452 contains more pertinent information.
453 * improvement: failure to provide requested stack allocation compiler notes
454 provided in all cases (requested stack allocation not happening without a
455 note being issued is now considered a bug.)
456 * bug fix: SB-POSIX exports the documented types and functions
457 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
458 types. (reported by "abhi")
459 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
460 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
461 (thanks to Paul Khuong)
462 * bug fix: looping around HANDLER-CASE could silently consume stack space
463 on each iteration. (reported by "foobar")
464 * bug fix: better error signalling when calls to functions seeking elements
465 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
466 (reported by Tobias Rittweiler)
467 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
468 directory components now works as it used to. (various prolems reported by
469 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
470 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
471 (reported by Elliot Slaughter, thanks to Stas Boukarev)
472 * bug fix: bogus undefined variable warnings from fopcompiled references to
473 global variables. (thanks to Lars Rune Nøstdal)
474 * bug fix: foreign function names should now appear in backtraces on
475 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
476 * bug fix: SETF compiler macro documentation strings are not discarded
478 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
479 (thanks to Alex Plotnick)
480 * bug fix: SLEEP accepts large integer arguments, truncating them to
481 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
482 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
483 * bug fix: compiler notes for expensive slot type checks could be emitted
484 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
486 changes in sbcl-1.0.29 relative to 1.0.28:
487 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
488 https://bugs.launchpad.net/sbcl
489 Bugs can be reported directly there, or by sending email to
490 sbcl-bugs@lists.sourceforge.net
491 (no subscription required.)
492 * minor incompatible change: under weak type checking policy integer
493 types are weakened less aggressively.
494 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
495 allowed to return, which causes SBCL to quit with exit status 0. Previously
496 if the function returned with a small integer return value, that value
497 was accidentally reused as the exit status.
498 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
499 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
500 :HASH-FUNCTION argument. Refer to user manual for details.
501 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
503 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
504 microseconds since the Unix epoch on all platforms.
505 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
506 allows the compiler to safely elide boundedness checks for special
508 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
509 the symbol, prohibits both lexical and dynamic binding. This is mainly an
510 efficiency measure for threaded platforms, but also valueable in
512 * new feature: UNC pathnames are now understood by the system on Windows.
513 * optimization: the compiler uses a specialized version of FILL when the
514 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
516 * optimization: accesses to potentially non-simple arrays where element type
517 is known are 50% faster.
518 * optimization: compiler now generates faster array typechecking code.
519 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
521 * optimization: multidimensional array accesses in the absence of type
522 information regarding array rank are approximately 10% faster due to
523 open coding of ARRAY-RANK.
524 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
525 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
527 * optimization: result of call to VECTOR can now be stack allocated.
528 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
529 as long as the resulting array is one-dimensional and has a known
530 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
531 length of the list matches the known length of the vector does not
532 allocate the list as an intermediate step. Ditto for VECTOR and simple
534 * optimization: MAKE-ARRAY can now stack allocate in the presence of
535 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
536 known element type, and is known to be simple and one dimensional.
537 * improvement: SBCL now emits a compiler note where stack allocation was
538 requested but could not be provided (not in all cases, unfortunately)
539 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
540 * improvement: pretty-printing loop has been implemented properly. (thanks
541 to Tobias Rittweiler)
542 * documentation: CLOS slot typechecing policy has been documented.
543 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
544 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
545 pointer, leading to memory faults. (thanks to Bart Botta)
546 * bug fix: better floating point exception handling on x86/OpenBSD.
547 (thanks to Josh Elsasser)
548 * bug fix: exit status from QUIT when called under --script was lost
549 (reported by Hubert Kauker)
550 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
551 same implementation of FILL to initialize the array, even if a more
552 efficient one was available (reported by Stas Boukarev, thanks to
554 * bug fix: potential miscompilation of array stack allocation on x86 and
555 x86-64. (reported by Time Tossavainen)
556 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
557 result in their subforms being treated as top level forms. (reported by
559 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
560 than a machine register could leave garbage in the high bits of the
561 result register (bug 316325).
562 * bug fix: disable address space randomization Linux/x86-64 as well,
563 not just x86-64. (reported by Ken Olum)
564 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
565 generate incorrect code.
566 * bug fix: #201; type inference for CONS and ARRAY types could derive
567 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
568 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
569 could not be assigned to or bound with PROGV. (reported by Lorenz
571 * bug fix: the value of CL:- in the inspector was the previous expression
572 evaluated rather than the expression being evaluated.
573 * bug fix: constants can no longer be locally declared special.
574 * bug fix: signals delivered to threads started from foreign land (read:
575 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
576 thread by blocking all signals and resignalling.
577 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
578 from :INITFORM, if any.
580 changes in sbcl-1.0.28 relative to 1.0.27:
581 * a number of bugs in cross-compilation have been fixed, with the ultimate
582 result that building under (at least) clisp should be much more reliable.
583 * minor incompatible changes: echo-streams now propagate unread-char to the
584 underlying input stream, and no longer permit unreading more than one
586 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
587 frames, allowing for instance more reliable backtraces.
588 * improvement: the debugger REPL can now reference lexical variables
589 by name directly for code compiled with (DEBUG 3).
590 * improvement: errors from malformed declarations now have better source
591 paths associated with them. (thanks to Tobias Rittweiler)
592 * optimization: faster local calls on x86/x86-64
593 * bug fix: some error messages for out-of-bound array indexes confused the
594 index and the bound. (thanks to Stas Boukarev)
595 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
597 * bug fix: running regressions tests in shells without OSTYPE set now works.
598 (reported by Harald Hanche-Olsen)
599 * bug fix: more robust static space exhaustion signalling from
600 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
601 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
602 docstring away instead of storing it under names such as (LAMBDA (X)).
603 (reported by Leslie Polzer)
604 * bug fix: timers could go off in the wrong order, be delayed indefinitely
605 (thanks to Ole Arndt for the patch)
606 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
607 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
608 potentially-invalid effective methods in its cache.
609 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
610 instances as well (thanks to Paul Khuong)
611 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
612 SB-POSIX:WAITPID and their C equivalents.
613 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
615 changes in sbcl-1.0.27 relative to 1.0.26:
616 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
617 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
618 * improvement: the system either recovers from stack exhaustion or dies
619 properly as opposed to leaving the user uncertain of whether the handler
620 trampled on some random memory next to the stack or having to rely on
621 --lose-on-corruption (which is still a good idea to use in production
622 because stack exhaustion can happen in signal handlers which will likely
624 * bug fix: fix gc related interrupt handling bug on ppc (regression from
625 1.0.25.37, reported by Harald Hanche-Olsen)
626 * bug fix: work around signal delivery bug in darwin (regression from
627 1.0.25.44, reported by Sidney Markowitz)
628 * bug fix: fix ERROR leaking memory (reported by David Thompson)
630 changes in sbcl-1.0.26 relative to 1.0.25:
631 * incompatible change: an interruption (be it a function passed to
632 INTERRUPT-THREAD or a timer function) runs in an environment where
633 interrupts can be enabled. The interruption can use
634 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
635 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
636 potentially running out of stack. Keep in mind that in the absence
637 of WITHOUT-INTERRUPTS some potentially blocking operation such as
638 acquiring a lock can enable interrupts.
639 * incompatible change: GC-OFF and GC-ON are removed, as they were
640 always unsafe. Use WITHOUT-GCING instead.
641 * new feature: runtime option --disable-ldb
642 * new feature: runtime option --lose-on-corruption to die at the
643 slightest hint of possibly non-recoverable errors: running out of
644 memory, stack, alien stack, binding stack, encountering a memory
645 fault, etc. In the absence of --lose-on-corruption a warning is
647 * enhancement: detect binding stack exhaustion
648 * enhancement: detect alien stack exhaustion on x86/x86-64
649 * improvement: generally more stable and reliable interrupt handling
650 * improvement: there is a per thread interruption queue,
651 interruptions are executed in order of arrival
652 * improvement: a repeating timer reschedules itself when the it has
653 finished, but expiration times are spaced equally. If an
654 expiration time is in the past it will trigger after a short grace
655 period that may give a chance to other things to run.
656 * optimization: slightly faster gc on multithreaded builds
657 * optimization: faster WITHOUT-GCING
658 * bug fix: when JOIN-THREAD signals an error, do it when not holding
659 important locks so that the debugger/handler doesn't produce
660 recursive errors or deadlock.
661 * bug fix: real-time signals are not used anymore, so no more
662 hanging when the system wide real-time signal queue gets full.
663 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
665 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
666 * bug fix: fix random memory faults related to interrupts on alpha
667 * bug fix: fix random memory faults related to interrupts on sparc
668 * bug fix: fix deadlocks related to starting threads
669 * bug fix: fix deadlines on locks on futex platforms
670 * bug fix: restore errno in signal handlers
671 * bug fix: fix deadlocks related to hash tables
672 * bug fix: fix deadlocks in pcl
674 changes in sbcl-1.0.25 relative to 1.0.24:
675 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
676 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
677 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
678 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
679 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
680 better name and does not return values so stale on multiprocessor systems.
681 Also, HOLDING-MUTEX-P was added for about the only sane usage of
683 * improvement: unithread builds keep track of MUTEX-VALUE.
684 * improvement: reading from a TWO-WAY-STREAM does not touch the output
685 stream anymore making it thread safe to have a concurrent reader and
686 a writer, for instance, in a pipe.
687 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
688 arguments, making compiler-macros for SETF-functions able to inspect
689 their constant arguments.
690 * improvement: COMPILE-FILE reports times with millisecond accuracy
691 (thanks to Luis Oliveira)
692 * optimization: CHAR-CODE type derivation has been improved, making
693 TYPEP elimination on subtypes of CHARACTER work better. (reported
694 by Tobias Rittweiler, patch by Paul Khuong)
695 * bug fix: setting alien structure fields of type struct by value now
696 computes the right offset for the memory copy.
697 * bug fix: compilation problem involving inlined calls to aliens with
698 result type VOID. (reported by Ken Olum)
699 * bug fix: #235a; sequential inline expasion in different policies no
700 longer reuses the functional from the previous expansion site.
701 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
702 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
703 * bug fix: named ENUMs in multiply-referenced alien record types no longer
704 cause an implied type redefinition. Regression from 1.0.21.29.
705 * bug fix: sign-extension of small signed return values now works with C
706 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
707 * improvements to the Windows port:
708 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
709 Westfold, thanks to Rudi Schlatte)
711 changes in sbcl-1.0.24 relative to 1.0.23:
712 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
713 vector of a multidimensional SIMPLE-ARRAY.
714 * new feature: the system now signals a continuable error if standard
715 readtable modification is attempted. (thanks to Tobias Rittweiler)
716 * new feature: DIRECTORY has been extended with a non-standard keyword
717 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
718 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
719 has been robustified and documented better. (thanks to Robert Goldman)
720 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
721 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
722 * tradeoff: constant FORMAT control strings are now compiled unless
723 SPACE > SPEED (previously only when SPEED > SPACE.)
724 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
726 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
728 * bug fix: lexical type declarations are now correctly reported by
729 SB-CLTL2. (reported by Larry D'Anna)
730 * bug fix: STRING-TO-OCTETS did not handle :START properly when
731 using UTF-8 as external format. (thanks to Luis Oliveira)
732 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
733 are signalled correctly. (thanks to Stas Boukarev)
734 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
735 designator. (thanks to Tobias Rittweiler)
736 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
737 designator, and returns T instead of the function. (thanks to
739 * bug fix: direct superclasses of STANDARD-CLASS and
740 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
741 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
742 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
743 when no class with the named slot yet exists no longer causes a
744 compile-time style-warning.
745 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
746 in safe code. (reported by Didier Verna)
747 * bug fix: #430; nested structure constructors can stack allocate.
748 * bug fix: on some 64-bit platforms dynamic space size was truncated
749 to #xffff0000 bytes. (reported by Benjamin Lambert)
750 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
751 REPL unusable. (reported by Daniel Herring)
752 * bug fix: return values of READ-SEQUENCE did not take :START into
753 account on file streams, regressions since 1.0.12.22. (reported by
754 Thomas Russ, patch by Paul Khuong)
755 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
756 method specializer used to confuse permuation vector optimization.
757 * bug fix: system inserted bogus implicit type declarations for local
758 special variables in DEFMETHOD bodies.
759 * bug fix: #354; duplicated frames in backtraces due to
760 non-tail-call-optimized XEPs to functions with return type NIL
762 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
763 initializes structure object slots according to DEFSTRUCT initforms,
764 and DEFSTRUCT forms :INCLUDEind structure classes defined using
765 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
766 (reported by Bruno Haible and Stephen Wilson)
767 * bug fix: #395; fill-pointer output streams used now support
768 element-type BASE-CHAR as well.
769 * bug fix: compiler error when attempting to derive return value of
770 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
772 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
774 * bug fix: Mac OS X binaries should now be portable between Leopard
777 changes in sbcl-1.0.23 relative to 1.0.22:
778 * enhancement: when disassembling method functions, disassembly
779 for the associated fast function is also produced.
780 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
782 * optimization: printing with *PRINT-PRETTY* true is now more
783 efficient as long as the object being printed doesn't require
784 special handling by the pretty printer.
785 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
786 now interact correctly with type declarations.
787 * partial bug fix: PCL detects infinite recursion during wrapper
788 validation. (thanks to Attila Lendvai)
789 * bug fix: #426; nested function calls are inlined properly.
790 Previously if FOO was an inline function, in calls of the form
791 (FOO (FOO ...)) the outer call was not inlined.
792 * bug fix: long long arguments passed in registers to alien
793 functions on PowerPC Linux and NetBSD are now handled correctly
794 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
796 changes in sbcl-1.0.22 relative to 1.0.21:
797 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
798 for the shared object in the current directory, but passes the native
799 namestring of the designated pathname to the operation system's shared
800 object loading function as-it.
801 * minor incompatible change: --disable-debugger toplevel option now takes
802 effect before processing of initialization files and --eval or --load
804 * new feature: new commandline argument: --script, which supports
805 shebang lines. See documentation for details. (based on work by
807 * new feature: SAVE-LISP-AND-DIE can save current values of
808 --dynamic-space-size and --control-stack-size in the executable core,
809 causing it to skip normal runtime option processing. See documentation
810 for details. (thanks to Zach Beane)
811 * enhancement: inoccous calls to EVAL or generic functions dispatching
812 on subclasses of eg. STREAM no longer cause compiler notes to appear.
813 * enhancement: the system no longer resignals errors from --load and
814 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
815 associated with the original error to be lost. (thanks to Ariel
817 * enhancement: :DONT-SAVE keyword argument has been added to
818 LOAD-SHARED-OBJECT for controlling interaction with
819 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
820 the effects of an earlier LOAD-SHARED-OBJECT call.
821 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
822 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
823 provided. (reported by Cedric St-Jean)
824 * bug fix: circularity handling in the reader did not treat raw
825 structure slots correctly. (reported by Cedric St-Jean)
826 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
827 file descriptors when there were none.
828 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
829 was broken. (reporteed by Willem Broekema)
830 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
831 pathnames without a directory.
832 * bug fix: COMPILE-FILE did not warn about undefined variable
833 references at toplevel, and LOAD of the resulting fasl did
835 * bug fix: functions with non-required arguments used to end up with
836 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
837 * bug fix: redefining a function with non-required arguments didn't
838 update the system's knowledge about its call signature properly.
839 * bug fix: fixed #431; incompatible alien record type redefinitions
840 are detected and handled. (reported by Neil Haven)
841 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
842 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
844 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
845 after alien stack frames.
846 * bug fix: strings passed to mk{s,d}temp lacked null termination
848 changes in sbcl-1.0.21 relative to 1.0.20:
849 * new feature: the compiler is able to track the effective type of a
850 generic function across method addition and removal.
851 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
852 appropriately typed structure slots without locking.
853 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
854 information like those gathered by TIME using a programming-friendly
856 * new feature: TIME reports time taken even if the form performs a
857 non-local transfer of control.
858 * enhancement: reduced conservativism on GENCGC platforms: on
859 average 45% less pages pinned (measured from SBCL self build).
860 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
861 mutate constant symbols or violate declaimed type of the symbol.
862 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
863 sleeping on the semaphore in heavily contested semaphores.
864 * bug fix: semaphores and condition variables were not interrupt
866 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
867 owned by other threads anymore.
868 * bug fix: FIND on lists called KEY outside the specified
869 subsequence. (reported by budden)
870 * bug fix: LOG doesn't use single-float intermediate results when
871 given mixed integer and double-float arguments, leading to better
872 precision. (reported by Bob Felts)
873 * bug fix: LOG with base zero returned values of inconsistent type.
875 changes in sbcl-1.0.20 relative to 1.0.19:
876 * minor incompatible change: OPTIMIZE qualities
877 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
878 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
879 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
880 * documentation: some slot access efficiency guidelines have been
881 added to the user manual.
882 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
883 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
884 as ASSOC and MEMEBER.
885 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
886 to more efficient EQ-comparison versions more often.
887 * optimization: enhanced derivation of DOLIST iteration variable type
889 * optimization: constant folding of simple (LIST ...) forms as DOLIST
891 * optimization: runtime lookup of function definitions can be
892 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
893 * optimization: compiler is able to derive the return type of
894 (AREF (THE STRING X) Y) as being CHARACTER.
895 * optimization: CLRHASH on empty hash-tables no longer does pointless
896 work. (thanks to Alec Berryman)
897 * optimization: REPLACE deftransforms don't punt when :START1 or
899 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
900 no longer emits a code deletion note. (reported by Andrew
902 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
903 functions with an odd number of &OPTIONAL arguments, a &REST
904 argument, and one or more &KEY arguments at the call site.
905 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
906 arguments appeared at call sites as well.
907 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
908 READ-LINE &co can no longer read from them afterwards. (reported
910 * bug fix: fixed #427: unused local aliens no longer cause compiler
911 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
913 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
914 alien-stack leakage. (reported by Andy Hefner)
915 * bug fix: PROGV signals an error when an attempt to violate declared
916 type of a variable or bind a constant is made.
917 * bug fix: SET signals an error when an attempt to violate declared
918 type of a variable is made.
919 * bug fix: restart computation during the execution of a restart
920 test function no longer causes infinite recursion. (reported by
922 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
923 signals an error. (thanks to Pierre Mai)
924 * bug fix: EXPORT left symbol unexported in conflict situations.
925 (thanks to Michael Weber)
926 * bug fix: correctly handle name conflicts involving CL:NIL.
927 (thanks to Michael Weber)
928 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
929 conflicts arising from USEing package with conflicting symbols
930 correctly. (thanks to Michael Weber)
932 changes in sbcl-1.0.19 relative to 1.0.18:
933 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
934 warnings that go otherwise unhandled will be muffled if they are
935 of the type that's the value of this variable.
936 * optimization: stack allocation is slightly more efficient on x86
938 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
939 where a raw slot always is initialized using the initform whose
940 type is not know sufficiently well a compile-time are now compiled
941 correctly. (reported by John Morrison)
942 * bug fix: compiler no longer makes erronous assumptions in the
943 presence of non-foldable SATISFIES types.
944 * bug fix: stack analysis missed cleanups of dynamic-extent
945 arguments in non-let-converted calls to local functions.
946 * improvements to the Windows port:
947 ** adjusted address spaces for building on both Win32 and
948 Win64. (thanks for John Connors)
949 * fixed some bugs revealed by Paul Dietz' test suite:
950 ** interval arithmetic during type derivation used inexact integer
951 to single-float coercions.
952 ** arithmetic operations involving large integers and single
953 floats give the same results in compiled and interpreted code.
954 ** deriving the result type of COERCE no longer signals an error
955 if the derived type of the second argument is a MEMBER type
956 containing invalid type specifiers.
957 ** ADJOIN with constant NIL as second argument works correctly.
958 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
960 changes in sbcl-1.0.18 relative to 1.0.17:
961 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
962 profiles only the current thread.
963 * minor incompatible change: changes to SYMBOL-VALUE of constants
964 defined with DEFCONSTANT now signal an error.
965 * enhancement: SB-SPROF now has support for wallclock profiling,
966 and is also able to profile specific threads. REPORT output
967 has also additional sorting options.
968 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
970 * optimization: structure allocation has been improved
971 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
972 ** out of line constructors are ~10% faster.
973 ** inline constructors are ~15% faster.
974 ** inline constructors are capable of dynamic extent allocation
975 (generally on x86 and x86-64, in some cases on other platforms
977 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
979 * optimization: file compiler is now able to coalesce non-circular
980 lists, non-base strings, and bit-vectors. Additionally, constants
981 are never referenced through SYMBOL-VALUE at runtime.
982 * optimization: code defining methods on PRINT-OBJECT (and other
983 generic functions in the COMMON-LISP package) now loads faster.
984 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
986 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
987 fasl is now deleted. (reported by Attila Lendvai)
988 * bug fix: READ-LINE always returned NIL for the last line in files.
989 (reported by Yoshinori Tahara)
990 * bug fix: more accurate disassembly annotations of foreign function
991 calls. (thanks to Andy Hefner)
992 * bug fix: trimming non-simple strings and non-string string
993 designators when the there is nothing to trim works properly.
994 (thanks to James Knight)
995 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
996 (thanks to Travis Cross)
997 * fixed some bugs revealed by Paul Dietz' test suite:
998 ** NIL is a valid function name (regression at 1.0.13.38)
999 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1000 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1001 fill pointers properly (regression at 1.0.12.23)
1002 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1003 displacement indices properly (regression at 1.0.12.23)
1005 changes in sbcl-1.0.17 relative to 1.0.16:
1006 * temporary regression: user code can no longer allocate closure
1007 variable storage on stack, due to bug 419 without explicitly
1008 requesting it. Please consult sbcl-devel for advice if you need to
1009 use this feature in the meanwhile.
1010 * new feature: runtime argument --control-stack-size can be used to
1011 adjust thread default control stack size.
1012 * enhancement: improved TIME output
1013 ** all times are reported using the measured accuracy (milliseconds
1014 for real and GC times, microseconds for everything else.)
1015 ** processor cycle counts on x86 and x86-64.
1016 ** interpreted forms are counted for both evaluator modes.
1017 ** number of lambdas converted by the compiler is reported.
1018 ** CPU percentage report (computed from real and total run time.)
1019 ** more comprehensive run time reporting, using a condenced format
1020 ** interperted form, lambda, and page fault counts are omitted
1022 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1024 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1025 * optimization: two argument forms of LAST are upto ~10% faster
1026 in normal SPEED policies.
1027 * optimization: NCONC no longer needs to heap cons its &REST list
1028 in normal SPEED policies.
1029 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1030 to Sidney Markowitz)
1031 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1032 regression since 1.0.9.1. (thanks to Eric Marsden)
1033 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1034 since 1.0.15.36. (thanks to Paul Khuong)
1035 * bug fix: LAST when always returned the whole list when given a bignum
1036 as the second argument.
1037 * bug fix: dynamic extent allocation of nested lists and vectors
1038 could leak to otherwise accessible parts.
1039 * bug fix: invalid optimization of heap-allocated alien variable
1041 * bug fix: fasl header checking is less vulnerable to different
1042 platform word lengths.
1043 * bug fix: more correct assembler syntax for GNU binutils
1044 2.18.50.0.4 support. (thanks to Marijn Schouten)
1045 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1047 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1048 declarations) successfully. (reported by Attila Lendvai)
1050 changes in sbcl-1.0.16 relative to 1.0.15:
1051 * minor incompatible change: revert the changes to sb-posix's error
1052 signaling added in 1.0.14.
1053 * minor incompatible change: change PROBE-FILE back to returning
1054 NIL whenever we can't get a truename, as was the case before 1.0.14.
1055 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1056 inherits from ERROR instead of just CONDITION.
1057 * new feature: SB-INTROSPECT can provide source locations for instances
1058 as well. (thanks to Tobias Rittweiler)
1059 * optimization: binding special variables now generates smaller code
1060 on threaded platforms.
1061 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1062 and cases where no :TEST is given but the compiler can infer that
1063 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1064 * optimization: better LOGNOT on fixnums.
1065 * optimization: modular arithmetic for a particular requested width
1066 is implemented using a tagged representation unless a better
1067 representation is available.
1068 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1069 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1070 for wellformedness and returns a specialized vector. (reported by
1071 Francois-Rene Rideau)
1072 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1073 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1074 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1075 unscheduling timer at the same time as another timer fires.
1076 * bug fix: don't reschedule timers for dead threads.
1077 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1078 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1079 bogus errors if select() was interrupted.
1080 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1082 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1083 * enhancement: cleaner backtraces for interactive interrupts, as
1084 well as other cases where the interesting frames used to be
1085 obscured by interrupt handling frames.
1086 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1087 now supported, and tracing a whole package using (TRACE "FOO") now
1088 traces SETF-functions as well.
1089 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1090 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1091 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1092 * unreadably printed representation of hash-tables now includes
1094 * bug fix: partially fixed #188: type propagation from assignments
1095 is now more efficient.
1096 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1097 'DOUBLE-FLOAT) are not flushable.
1098 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1099 full address of the object, and none of the tag bits.
1100 * bug fix: readably printing hash-tables now respects other printer
1101 control variables. (reported by Cedric St-Jean)
1102 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1103 keyword with MAKE-HASH-TABLE.
1104 * bug fix: export SB-POSIX:MKSTEMP.
1105 * bug fix: SORT was not interrupt safe.
1106 * bug fix: XREF accounts for the last node of each basic-block as
1108 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1109 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1110 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1111 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1112 create obsolete instances in the case of redefinition or
1113 obsoletion of a superclass. (thanks to Andy Hefner)
1114 * bug fix: Support for the Alpha architecture has been revived; it had
1115 suffered somewhat from lack of maintenance since sbcl-1.0.
1116 * improvements to the Windows port:
1117 ** The system detects the codepage to use at startup, instead of
1118 using the value from the saved core. (thanks to Kei Suzuki)
1120 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1121 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1122 (see documentation for details.)
1123 * revived support for OpenBSD (contributed by Josh Elsasser)
1124 * partially fixed bug #108: ROOM no longer suffers from occasional
1125 (AVER (SAP= CURRENT END)) failures.
1126 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1127 bodies no longer cause a WARNING to be signalled. (reported by
1129 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1130 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1131 the bug in TRUNCATE.) (reported by Michael Weber)
1132 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1133 no samples. (reported by Andy Hefner)
1134 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1135 no longer appear as (NIL ...) frames in backtraces.
1136 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1137 is now actually exported from SB-EXT as documented. (reported by
1139 * bug fix: sb-aclrepl now correctly understands how to inspect
1140 single-floats on 64-bit platforms where single-floats are not boxed.
1141 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1142 yet been finalized. (reported by Levente Meszaros)
1143 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1144 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1145 SBCL-specific optimize qualities.
1147 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1148 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1149 an executable in the search path, and does so in the child
1150 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1151 been removed; it can be found in the CVS history, for somebody who
1152 needs that search behavior (see the manual).
1153 * minor incompatible change: compiler policy re. weakening type
1154 checks has changed: now type checks are weakened only if SAFETY < 2
1156 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1157 unparsing of directory pathnames as files. Analogously,
1158 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1159 filename to parse into a directory pathname.
1160 * enhancement: implicit generic function creation now signals a
1161 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1162 users can bind handlers for and muffle around calls to LOAD.
1163 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1164 to be used (using the default stream external format), and allows
1165 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1166 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1167 strings and vectors whose element-type or simplicity is not fully
1168 known at compile-time.
1169 * optimization: STRING-TRIM and related functions no longer allocate
1170 a new string when no trimming needs to be performed. These functions
1171 are also faster than before when the input string has been declared
1173 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1174 * optimization: READ-LINE is significantly faster for files containing
1176 * optimization: non-open coded uses of character comparison operators
1177 (e.g. char=) no longer cons when called with more than one parameter
1178 on platforms supporting dynamic-extent allocation.
1179 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1180 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1181 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1183 * bug fix: some sequence functions elided bounds checking when
1185 * bug fix: too liberal weakening of union-type checks when SPEED >
1187 * bug fix: more bogus fixnum declarations in ROOM implementation
1190 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1191 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1192 :SYNCHRONIZED argument, which makes the hash-table safe for
1193 concurrent accesses (but not iteration.) See also:
1194 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1195 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1196 * optimization: CONCATENATE on strings is an order of magnitude faster
1197 in code compiled with (> SPEED SPACE).
1198 * optimization: SUBSEQ is ~50% faster on lists.
1199 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1200 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1201 END is smaller then START.
1202 * bug fix: SB-PROFILE will no longer report extra consing for nested
1203 calls to profiled functions.
1204 * bug fix: ROOM implementation had bogus fixnum declarations which
1205 could cause type-errors when calling ROOM on large images.
1206 * bug fix: if file compilation is aborted, the partial fasl is now
1207 deleted, and COMPILE-FILE returns NIL as the primary value.
1208 * bug fix: number of thread safety issues relating to SBCL's internal
1209 hash-table usage have been fixed.
1210 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1211 be returned from its body when the values were being returned
1212 using unknown-values return convection and the W-P-O was wrapped
1213 inside an UNWIND-PROTECT.
1214 * bug fix: sb-posix should now compile again under Windows, enabling
1215 slime to work again.
1217 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1218 * incompatible change: hash-table accessor functions are no longer
1219 automatically protected by locks. Concurrent accesses on the same hash-table
1220 from multiple threads can give inconsistent results or even corrupt the
1221 hash-table completely. Multi-threaded applications should do their own
1222 locking at the correct granularity. In the current implementation it is
1223 still safe to have multiple readers access the same table, but it's not
1224 guaranteed that this property will be maintained in future releases.
1225 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1226 and will signal an error at runtime.
1227 * enhancement: SB-THREAD package now exports a semaphore interface.
1228 * enhancement: CONS can now stack-allocate on x86 and
1229 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1231 * enhancement: nested lists can now be stack allocated on
1232 platforms providing stack allocation support.
1233 * enhancement: dynamic-extent support has been extended to support
1234 cases where there are multiple possible sources for the stack
1236 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1237 if the mutex is uncontested on Linux.
1238 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1239 as specified by the CLHS. (thanks to Tobias Rittweiler)
1240 * bug fix: NaN comparison now works on x86-64.
1241 * bug fix: CLOSE :ABORT T on a stream with pending output now
1243 * bug fix: instances of non-standard metaclasses using standard
1244 instance structure protocol sometimes missed the slot type checks
1246 * bug fix: known functions can be inlined in high-debug code.
1248 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1249 * minor incompatible change: the MSI installer on Windows no longer
1250 associates .lisp and .fasl files with the installed SBCL.
1251 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1252 on Windows. (thanks to Luis Oliviera)
1253 * new feature: SB-CLTL2 contrib module now implements
1254 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1255 * optimization: scavenging weak pointers is now more efficient,
1256 requiring O(1) instead of O(N) per weak pointer to identify
1257 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1258 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1259 method bodies using constant slot-names when the first argument is
1260 a specializer parameter for the method.
1261 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1262 names, when the class of the instance is a direct instance
1263 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1264 as slow as the constant slot-name case.)
1265 * optimization: member type construction is now O(N) instead
1267 * optimization: UNION and NUNION are now O(N+M) for large
1268 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1270 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1271 now more readable in environments like Slime which display it.
1272 (thanks to Tobias C. Rittweiler)
1273 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1274 was able to infer the correct argument type for the object on which
1275 the CAS operation was being performed.
1276 * bug fix: copy propagation interfered with parallel assignment
1277 semantics in local calls. (reported by Paul Khuong)
1278 * bug fix: the signed modular fixnum shift compiled to wrong code on
1279 x86 and x86-64. (spotted by a slight modification to some of
1282 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1283 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1284 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1285 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1287 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1288 and generic function now print the object identity for anonymous
1289 instances. (thanks to Attila Lendvai)
1290 * enhancement: as an extension to MOP, SBCL now supports SETF of
1291 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1292 (thanks to Attila Lendvai)
1293 * enhancement: sb-cover has an alternate annotation mode which puts
1294 the form annotations at the car of the form, instead of annotating
1295 it completely. The benefit of this mode is that it shows better
1296 which forms were instrumented by the compiler.
1297 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1298 by printer control variables. (reported by Dan Corkill)
1299 * bug fix: system leaked memory when delayed output was performed by
1300 the OS in smaller chunks then expected. (thanks to David Smith)
1301 * bug fix: system leaked memory when file streams were not closed
1303 * bug fix: large objects written to slow streams that were modified
1304 after the write could end up with the modified state written to
1305 the underlying file descriptor.
1306 * bug fix: multiple threads operating in parallel on the same stream
1307 could cause buffer-overflows.
1308 * bug fix: source location information is stored correctly
1309 (broken since 1.0.6). This bug would generally show up as the
1310 Slime debugger highlighting the wrong form when the sldb-show-source
1312 * bug fix: Branch forms are again annotated as branches in the sb-cover
1314 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1315 on x86-64. (reported by Gregory Vanuxem)
1316 * bug fix: EQUALP could return wrong results for structures with raw
1317 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1318 word). (reported by Vjacheslav Fyodorov)
1319 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1322 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1323 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1324 atomic compare-and-swap operations on threaded platforms.
1325 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1326 allows assigning a global minimum value to optimization qualities
1327 (overriding proclamations and declarations).
1328 * enhancement: closed over variables can be stack-allocated on x86
1330 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1332 * optimization: slot definition lookup is now O(1). This speeds up
1333 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1334 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1335 * optimization: ASSOC and MEMBER can now be open-coded for all
1336 combinations of keyword arguments when second argument is constant
1337 and SPEED >= SPACE. In other cases a specialized version is
1339 * bug fix: using obsoleted structure instances with TYPEP and
1340 generic functions now signals a sensible error.
1341 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1342 (reported by Kristoffer Kvello)
1343 * bug fix: backtrace construction is now more careful when making
1344 lisp-objects from pointers on the stack, to avoid creating bogus
1345 objects that can be seen by the GC.
1346 * bug fix: defaulting of values in contexts expecting more than 7
1347 variables now works on x86-64. (reported by Christopher Laux)
1348 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1350 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1351 as the property-list of a symbol.
1352 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1353 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1354 situations requested, are once again file-compileable. (reported
1357 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1358 * MOP improvement: support for user-defined subclasses of
1359 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1360 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1361 the expansion of DEFMETHOD, is responsible for generating a form
1362 which creates a list of specializers when evaluated. Additional
1363 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1364 debugging and introspective support.
1365 * minor incompatible change: the (unsupported) spinlock interface
1366 has changed: free spinlock now has the value NIL, and a held spinlock
1367 has the owning thread as its value.
1368 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1369 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1371 * enhancement: name of a socket-stream is now "a socket" instead of
1372 "a constant string".
1373 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1374 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1375 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1376 for generic functions. (Thanks to Tobias C. Rittweiler)
1377 * optimization: bignum printing speed has been improved by 20-40%
1378 (depending on the bignum size.)
1379 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1381 * bug fix: the cache used by the CLOS to store precomputed effective
1382 methods, slot offsets, and constant return values is now thread and
1384 * bug fix: generic function dispatch function updating is now thread
1385 and interrupt safe (in the sense that the known issues have been
1387 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1388 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1389 * bug fix: asdf systems with dependencies to the SB-POSIX or
1390 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1391 * bug fix: interrupt safety of applicable method computation has been
1394 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1395 * new contrib: sb-cover, an experimental code coverage tool, is included
1396 as a contrib module.
1397 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1398 significantly faster.
1399 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1400 produce more efficient code on x86-64 if the compiler can determine
1401 that (+ INDEX <constant>) does not require a bounds check and FOO
1402 has an element type at least 8 bits wide.
1403 * enhancement: a new, experimental synchronous timeout facility is
1404 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1405 * enhancement: when a symbol name conflict error arises, the
1406 conflicting symbols are always printed with a package prefix.
1407 (thanks to Kevin Reid)
1408 * enhancement: stepping is now once again supported on the SPARC and
1409 MIPS platforms. (It is also now more likely to work on CheneyGC
1411 * enhancement: sb-sprof can now also track and report accurate call
1413 * bug fixes: the treatment of non-standard subclasses of
1414 SB-MOP:SPECIALIZER is more correct.
1415 * incompatible change: PURIFY no longer copies the data from the
1416 dynamic space into the static and read-only spaces on platforms
1417 that use the generational garbage collector
1418 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1420 * bug fix: GC race condition occasionally resulting in crashes with
1421 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1423 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1425 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1426 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1427 * bug fix: an asynchronous interrupt could previously leave the
1428 system running with GC inhibited.
1429 * bug fix: a DECLARE form evaluated at top-level now causes an error
1430 rather than silently (or verbosely) returning NIL.
1431 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1432 result in a error being signalled due to source form lookup errors.
1433 (reported by Peter Graves)
1435 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1436 * incompatible change: removed writer methods for host-ent-name,
1437 host-ent-addresses -- changing the values did not update the DNS
1439 * minor incompatible change: changed experimental JOIN-THREAD interface
1440 * documentation: the manual now lists reader and writer methods
1441 in class slot documentation sections. (thanks to Richard M Kreuter)
1442 * documentation: unwinding from asyncronous events has been
1443 documented as unsafe.
1444 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1445 in multithreaded application code.
1446 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1447 platforms. (thanks to James Anderson for the optimization hint)
1448 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1450 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1451 variants no longer cons.
1452 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1453 their NOT- variants no longer cons.
1454 * optimization: EQUAL hash tables no longer use SXHASH for objects
1455 of all data types, but instead use an EQL hash for types for which
1456 EQUAL is the same as EQL.
1457 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1458 are significantly faster.
1459 * optimization: new STRING-OUTPUT-STREAM implementation is much
1460 faster for large outputs and conses 30% less on average.
1461 * enhancement: XREF information is now collected for references made
1462 to global variables using SYMBOL-VALUE and a constant argument.
1463 * enhancement: SIGINT now causes a specific condition
1464 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1465 * bug fix: FILE-POSITION used to signal an error in some cases where
1466 ANSI requires it to return NIL.
1467 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1468 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1469 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1471 * bug fix: bad type declaration in the CLOS implementation has
1472 been fixed. (reported by James Anderson)
1473 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1474 (thanks to Lutz Euler)
1475 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1476 required by the CLHS. (reported by Samium Gromoff)
1477 * bug fix: dead unbound variable references now signal an error.
1478 (reported by Marco Monteiro)
1479 * bug fix: / with an unused value was being deleted in safe code.
1480 (thanks to Marco Monteiro and Kevin Reid)
1481 * bug fix: number of characters that can be written onto a single
1482 line in a file is unlimited.
1483 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1484 been fixed by inhibiting interrupts for when GC is disabled.
1485 * bug fix: some interrupt safety issues with GETHASH, (SETF
1486 GETHASH), CLRHASH and REMHASH have been fixed.
1487 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1488 specifier no longer causes infinite recursion.
1489 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1490 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1491 * bug fix: an &environment argument with the correct variable information
1492 is passed to macros that are expanded during byte compilation.
1493 (reported by Samium Gromoff)
1494 * bug fix: a logic error was causing the hash function for bignums to
1495 have excessive amounts of collisions. (reported by Faré Rideau)
1496 * bug fix: modifying the contents of an array could change the return
1497 value of SXHASH on that array, which is only allowed for strings
1498 and bit vectors. (bug introduced in 0.9.16)
1499 * improvement: the x86-64/darwin port now passes all tests (except
1500 for the debugger tests) but should still be considered
1501 experimental until this is fixed.
1502 * improvement: a style-warning is signaled for CASE (etc) clauses with
1503 duplicate keys. (thanks to Kevin Reid)
1504 * improvement: macos/x86 and macos/x86-64 now use mach exception
1505 handlers for dealing with illegal instructions (for trapping and
1506 error handling) and memory protection violations (for GC).
1508 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1509 * new platform: experimental support for x86-64/darwin (MacOS).
1510 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1511 and getnameinfo sockets functions are used instead of gethostbyaddr
1512 and gethostbyname, on platforms where the newer functions are available.
1513 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1515 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1516 don't print the startup banner, but behave as if --noinform was passed
1517 as a command line argument. (thanks to Kevin Reid)
1518 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1519 * optimization: code using alien values with undeclared types is much faster.
1520 * optimization: the compiler is now able to open code SEARCH in more cases.
1521 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1522 * bug fix: using standardized COMMON-LISP special variables as loop
1523 variables no longer signals bogus package lock violations. (reported
1525 * bug fix: declaring local loop variables to be of a range-limited type
1526 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1527 (reported by Andras Simon)
1528 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1529 bugs remain on x86-64.)
1530 * bug fix: the #= and ## reader macros now interact reasonably with
1531 funcallable instances.
1532 * bug fix: type-checks for function arguments were compiled using the
1533 compiler policy settings of the wrong lexical environment (in 1.0.2
1535 * bug fix: SHADOW accepts characters as string designators, as required
1536 by the spec (thanks to Eric Marsden)
1537 * bug fix: fixed GC safety issues when foreign functions are called with
1538 non-base strings as arguments
1539 * bug fix: more consistent error output for fatal-compiler-warnings, like
1541 * bug fix: functions with proper names were showing up as NIL in
1542 backtraces (reported by Edi Weitz, regression in 1.0.2)
1544 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1545 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1546 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1547 produce more efficient code on the x86 if the compiler can determine
1548 that (+ INDEX <constant>) does not require a bounds check and FOO
1549 has an element type at least 8 bits wide.
1550 * bug fix: references to undefined variables are handled the same way
1551 in toplevel forms as in the normal compiler
1552 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1554 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1555 (thanks to Jon Buller)
1556 * improvement: faster compilation times for complex functions
1557 * improvement: added readlink support to SB-POSIX (thanks to Richard
1560 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1561 * improvement: experimental support for mach exception handling on
1562 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1564 * improvement: support for GBK external format.
1565 (thanks to Chun Tian (binghe))
1566 * improvement: the debugger now displays variables that have been closed
1567 over, in code compiled with (DEBUG 2) or higher
1568 * improvement: support for executable cores on NetBSD (thanks to
1570 * new feature: added a RESTART-FRAME debugger command
1571 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1572 be used to provide an implementation for FILE-POSITION on Gray streams
1573 (thanks to Eric Marsden)
1574 * new feature: add syslog, openlog and closelog support to SB-POSIX
1575 (thanks to Richard Kreuter)
1576 * optimization: the function call overhead in code compiled with
1577 a high DEBUG optimization setting is significantly
1578 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1579 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1580 (thanks to Tony Martinez)
1581 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1582 evaluated once (reported by Kevin Reid)
1583 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1584 works again (thanks to Kilian Sprotte)
1585 * bug fix: an error is signaled for tagbodies with duplicate tags
1586 (thanks to Stephen Wilson)
1587 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1588 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1589 stack frames from alien callbacks.
1590 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1591 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1592 65k pages (thanks to David Woodhouse)
1593 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1595 changes in sbcl-1.0.1 relative to sbcl-1.0:
1596 * new platform: FreeBSD/x86-64, including support for threading.
1597 * new feature: the compiler stores cross-referencing information
1598 about function calls (who-calls), macroexpansion (who-macroexpands)
1599 and special variables (who-binds, who-sets, who-references) for code
1600 compiled with (< SPACE 3). This information is available through the
1601 sb-introspect contrib.
1602 * new feature: users may subclass SEQUENCE, and have instances of
1603 these classes interoperate with standard Common Lisp functions if
1604 a number of methods are defined. (This feature is experimental
1605 and the interface subject to change based on feedback from SBCL
1606 users and the general community)
1607 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1608 x86/x86-64, rather than the previous fixed depth of 8
1609 * improvement: another pthread back-end of mutex "pthread-futex".
1610 * bug fix: non-ascii command-line arguments are processed correctly
1611 (thanks to Yaroslav Kavenchuk)
1612 * bug fix: non-required arguments were not passed correctly when a method
1613 defined using DEFMETHOD was called from a mop-generated method using
1614 CALL-NEXT-METHOD (reported by Pascal Costanza)
1615 * bug fix: recursion is now permitted in accessors through
1616 SLOT-UNBOUND. (reported by Pascal Costanza)
1617 * bug fix: an error was signaled at startup if the HOME environment
1618 variable was defined, but had an empty value (reported by Peter Van Eynde)
1619 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1620 signal a PROGRAM-ERROR, not a BUG.
1621 * bug fix: SB-POSIX:READDIR works when built with large file support.
1622 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1624 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1625 for better automatic indentation support. (thanks to Matt Pillsbury)
1626 * optimization: loading generic functions no longer takes O(n^2) time,
1627 proportional to the amount of methods in the generic function
1628 (reported by Todd Sabin and Jeremy Brown)
1629 * optimization: the FIND and POSITION family of sequence functions
1630 are significantly faster on arrays whose element types have been
1632 * improvements to the Windows port:
1633 ** Intermittent heap corruption problems have been fixed. (thanks
1634 to Alastair Bridgewater)
1635 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1637 ** Lisp is able to unwind foreign exception frames from alien
1638 callbacks. (thanks to Alastair Bridgewater)
1640 changes in sbcl-1.0 relative to sbcl-0.9.18:
1641 * improvement: experimental support for threading on FreeBSD/x86.
1642 (thanks to NIIMI Satoshi)
1643 * improvement: runtime option --dynamic-space-size can be used
1644 to set the size of the dynamic space reserved on startup.
1645 * improvement: floating point modes in effect are now saved in
1646 core, and restored on startup.
1647 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1648 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1649 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1650 threads are not running after *SAVE-HOOKS* have run.
1651 * improvement: writes to CLOS instance slots are type-checked in code
1652 compiled with (SAFETY 3)
1653 * improvement: floating-point exception handling on FreeBSD (thanks to
1655 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1656 (thanks to Zach Beane)
1657 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1659 * improvement: added support for the Shift-JIS external format.
1660 (contributed by NIIMI Satoshi)
1661 * improvement: callbacks are supported on Linux/PPC. (thanks to
1663 * bug fix: compiler bug triggered by a (non-standard) VALUES
1664 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1665 * bug fix: file compiler no longer confuses validated and already
1666 dumped structurres. (reported by Kaersten Poeck)
1667 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1668 fill-pointer signals a type-error as required. (thanks to
1670 * bug fix: disassemly of funcallable instances works.
1671 * bug fix: single stepping on PPC.
1672 * bug fix: fix thread-safety problems in the type system (generally
1673 manifesting as nonsensical errors like "STRING is a bad type specifier
1674 for sequences" or "The value 1 is not of type FIXNUM")
1675 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1676 (reported by Josip Gracin)
1677 * bug fix: an error is signaled for attempts to displace arrays with
1678 incompatible element types (thanks to Mario Mommer)
1679 * bug fix: more correct handling of wide characters in debug info
1680 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1681 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1682 and don't cause extra consing
1683 * optimization: MAP and MAP-INTO are significantly faster on vectors
1684 whose elements types have been declared.
1685 * Improvements to SB-SPROF:
1686 ** Support for allocation profiling
1687 ** Reduced profiling overhead, especially for long profiling runs
1688 * Improvements to the Windows port:
1689 ** floating point exceptions are now reported correctly.
1690 ** stack exhaustion detection works partially.
1691 ** more accurate GET-INTERNAL-REAL-TIME.
1692 ** better RUN-PROGRAM behaviour in case of errors in the child
1694 ** PROBE-FILE now simplifies pathnames correctly.
1695 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1696 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1697 1st 1970 (although time timezone data will be unreliable).
1698 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1700 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1701 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1702 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1704 * bug fix: two potential GC deadlocks affecting threaded builds.
1705 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1706 returns T (reported by Anton Kazennikov)
1707 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1708 with non-variable places
1709 * bug fix: remove a race condition in the setting of
1710 funcallable-instance functions, this should make threaded CLOS
1711 code more stable against memory faults.
1712 * bug fix: corruption of specials when unbinding is interrupted by an
1713 asynchronous unwind (reported by Hannu Koivisto)
1714 * improvement: the debugger will now also display local variables that
1715 are only used once, for code compiled with a DEBUG optimization quality
1718 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1719 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1720 * incompatible change: External-format support for FFI calls. The
1721 SB-ALIEN:C-STRING no longer implies an ASCII
1722 external-format. Instead the string is subject to external-format
1723 conversion. Additionally return values of type SB-ALIEN:C-STRING
1724 are by default of type (SIMPLE-ARRAY CHARACTER), not
1725 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1726 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1727 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1728 * incompatible change: SB-EXT package no longer contains the
1729 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1730 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1732 * incompatible change: the single-stepper is no longer available
1733 on Alpha, Mips and Sparc platforms.
1734 * minor incompatible change: the direct superclasses of
1735 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1736 not (STANDARD-OBJECT FUNCTION). This makes the
1737 class-precedence-lists of GENERIC-FUNCTION and
1738 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1740 * minor incompatible change: the default stream external format on
1741 non-unicode SBCL is no longer detected from the locale, but is always
1743 * new feature: Add a version of evaluator that uses an interpreter instead
1744 of the compiler. EVAL still uses the compiler by default, to switch it
1745 to use the interpreter, set the value of the variable
1746 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1747 * minor incompatible change: the single-stepper REPL has been merged
1748 with the normal debugger (see the "Stepping" heading of the debugger help
1749 for more details). The debugger command STEP will no longer switch
1750 to the single-stepper REPL.
1751 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1752 for a type now works.
1753 * bug fix: loading of default sysinit file works. (thanks to Leonid
1755 * bug fix: better detection of circularities in the file-compiler.
1756 (reported by Marco Monteiro)
1757 * bug fix: the CL pathname functions now work with files that have
1758 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1759 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1760 systems with Unix98 pty semantics.
1761 * bug fix: ASDF-INSTALL will now work with bsd tar.
1762 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1764 * bug fix: timers expiring in dead threads no longer cause a
1765 type-error (reported by Paul "Nonny Mouse").
1766 * bug fix: thanks to more lightweight single-stepper instrumentation,
1767 code compiled with (DEBUG 3) will compile and execute significantly faster,
1768 and will have more accurate type-inferencing than before
1769 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1770 whose bindings are modified
1771 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1772 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1773 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1774 CL:SOFTWARE-VERSION with proper version
1776 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1777 * feature: implemented the READER-METHOD-CLASS and
1778 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1779 as specified by AMOP.
1780 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1782 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1783 (thanks to Lutz Euler)
1784 * optimization: hashing of general arrays and vectors has been
1785 improved. (reported by Any Fingerhut)
1786 * enhancement: SB-INTROSPECT is now able to find definitions of
1787 profiled functions. (thanks to Troels Henriksen)
1788 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1789 as well, allowing compiler-macros for SETF-functions to expand.
1790 * enhancement: step-instrumentation no longer wraps known
1791 single-value functions with multiple-value context, allowing
1792 better type inference.
1793 * fixed bug #337: use of MAKE-METHOD in method combination now works
1794 even in the presence of user-defined method classes. (reported by
1795 Bruno Haible and Pascal Costanza)
1796 * fixed bug #339(c): if there are applicable methods not part of any
1797 long-form method-combination group, call INVALID-METHOD-ERROR.
1798 (reported by Bruno Haible)
1799 * fixed bug #361: the :FUNCTION initarg in the protocol for
1800 initialization of methods can now be used to override
1801 internally-produced optimized functions. (reported by Bruno
1803 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1804 system-provided lambda expression no longer cause warnings about
1805 unbound #:|pv-table| symbols.
1806 * bug fix: improved the handling of type declarations and the
1807 detection of violations for keyword arguments with non-constant
1809 * bug fix: potentially erronous calls to PATHNAME and
1810 MERGE-PATHNAMES were being flushed in some cases.
1811 (reported by Richard Kreuter)
1812 * bug fix: compiled calls to TYPEP were mishandling obsolete
1813 instances. (reported by James Bielman and Attila Lendvai)
1814 * bug fix: format strings with ~> without matching ~< no longer
1815 trigger an AVER, but signal an understandable error instead.
1816 (reported by Antonio Martinez)
1817 * bug fix: specifying an output-file without a pathname-type for
1818 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1819 of input-file instead of "fasl". (reported by Robert Dodier)
1820 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1821 (reported by James Y Knight).
1822 * bug fix: compiler-macros-function did not consider the environment
1823 argument for shadowing by local functions.
1824 * bug fix: compiler-macros expansion was inhibited by local INLINE
1826 * bug fix: inline expansions of known functions were subject to
1827 step-instrumentation in high debug policies, leading to problems
1828 with type-inference.
1829 * bug fix: compiler failed to differentiate between different CONS
1830 types in some cases.
1831 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1832 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1833 * bug fix: #368: incorrect use of expressed vs. upgraded array
1835 * bug fix: #306a: more precise unions of array types.
1836 * thread-safety improvements:
1837 ** CONDITION-WAIT could return early on Linux, if the thread was
1838 interrupted and subsequently continued with SIGCONT.
1839 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1841 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1842 * added support for the ucs-2 external format. (contributed by Ivan
1844 * minor incompatible change: pretty printing of objects of type
1845 (cons symbol) is, in the default pprint-dispatch-table, now
1846 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1848 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1849 called later in a class's lifetime, possibly as late as when the
1850 first instance of the class is created. Previously,
1851 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1852 class became finalizeable.
1853 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1854 for multibyte external-format streams. (thanks to "vbzoli")
1855 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1856 with :ALLOCATION :CLASS inherited from superclasses of the
1858 * fixed bug: anonymous classes can now be created using the :NAME
1859 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1860 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1861 * fixed bug: core-files saved with :EXECUTABLE T can again be
1862 executed when SBCL_HOME isn't set. (reported by James Knight)
1863 * fixed bug: toplevel LOCALLY forms with declarations could
1864 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1865 * fixed bug: printing from several different threads using different
1866 values of *print-case* could cause invalid output, due to
1867 some internal special variables of the printer not being bound
1868 thread-locally (reported by Max Mikhanosha)
1869 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1870 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1871 (reported by Pascal Costanza)
1872 * fixed bug: FINALIZE-INHERITANCE is called from
1873 REINITIALIZE-INSTANCE on classes when the class has previously
1874 been finalized, as required by AMOP.
1875 * minor code generation optimizations:
1876 ** better register allocation in CLOS dispatching functions
1877 ** overflow detection when coercing signed bytes to fixnums on x86-64
1878 ** is now implemented with one IMUL instruction instead of three shifts
1879 ** more efficient bit-vector access on x86 and x86-64
1880 ** more efficient access to raw structure slots on x86 and x86-64
1881 * fixed some bugs revealed by Paul Dietz' test suite:
1882 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1883 return its argument.
1885 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1886 * feature: thread support on Solaris/x86, and experimental thread support
1888 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1890 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1891 default method for SLOT-UNBOUND.
1892 * minor incompatible change: prevent the user from specializing the
1893 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1894 somewhat counter to the intent of the protocol, I (CSR) think, and
1895 additionally it just doesn't work in SBCL as currently
1896 implemented, thanks to optimizations (that are always valid for
1897 the other three SLOT-VALUEish functions, but not for the setter).
1898 * minor incompatible change: the :SB-LDB feature is now enabled by
1899 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1900 the low-level debugger.
1901 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1902 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1903 down to an SB-SYS:FD-STREAM, allowing direct communication in
1904 more cases. Temporary files and pipes are still used as a fallback
1906 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1907 on the non-reentrant C functions localtime(3) and gmtime(3).
1908 * bug fix: global optimization policy was not visible in LOCALLY and
1910 * bug fix: class objects can be used as specializers in methods.
1911 (reported by Pascal Costanza)
1912 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1913 with a type error. (reported by blitz_ on #lisp)
1914 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1915 failed with a type error. (reported by Pascal Bourguignon)
1916 * bug fix: merging pathnames against defaults with :DIRECTORY
1917 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1918 (reported by James Y Knight)
1919 * bug fix: saving large (>2GB) cores on x86-64 now works
1920 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1921 constant index and a (simple-array (signed-byte 32)) array
1922 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1923 error (patch by Robert J. Macomber)
1924 * feature: TIME now displays the amount of run-time spent in GC
1925 * bug fix: The debugger now does a better job of respecting
1926 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1927 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1928 workaround for bug 403.)
1929 * bug fix: floating point exception handling now works on FreeBSD
1930 (thanks to NIIMI Satoshi)
1931 * fixed some bugs revealed by Paul Dietz' test suite:
1932 ** MISC.641: LET-conversion were not supposed to work in late
1934 * improvements to the Win32/x86 port:
1935 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1936 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1938 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1939 * new feature: source path information is generated for macro-expansion
1940 errors for use in IDE's like Slime (thanks to Helmut Eller)
1941 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1942 * bug fix: compiler does not loop forever on an invalid type in
1944 * improvement: compilation of most CLOS applications is significantly
1946 * optimization: added a limited bytecode compiler for simple toplevel
1947 forms, speeding up compilation and FASL loading
1948 * bug fix: the statistical profiler now properly distinguishes anonymous
1951 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1952 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1953 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1954 into subclasses of the finalized class. Now user calls to
1955 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1956 system return before any subclasses are finalized.
1957 * minor incompatible change: The reader no longer ignores errors
1958 regarding non-existent packages in #+ and #- feature tests.
1959 * new feature: command line options --no-sysinit, --no-userinit to
1960 inhibit loading the corresponding init files
1961 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1962 for sending data through UDP sockets (thanks to François-René Rideau)
1963 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1964 error is signalled instead (thanks to François-René Rideau)
1965 * minor incompatible change: Error signalling behaviour of lexical
1966 operations violating package locks has changed slightly. Refer to
1967 documentation on package locks for details.
1968 * enhancement: EVAL can process IF-expressions without resorting to the
1970 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1971 constant-folded properly due to missing out-of-line functions.
1972 (reported by Mika Pihlajamäki)
1973 * bug fix: LISTEN sometimes returned T even in cases where no data was
1974 immediately available from the stream
1975 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1976 were reversed. (reported by Levente Mészáros)
1977 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1978 when given a vector displaced to an adjustable array. (reported
1980 * bug fix: derivation of float boundaries from numbers outside the
1981 appropriate float range (reported by John Wiseman)
1982 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1984 * bug fix: precomputing cache entries for generic functions with
1985 some subclasses of specializers as yet invalid does not attempt to
1986 fill a cache line with a negative offset. (reported by Levente
1988 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1989 allow condition class objects as arguments to DOCUMENTATION and
1990 (SETF DOCUMENTATION); only find and set documentation for
1991 structure names for the STRUCTURE doc-type. (suggested by Gary
1993 * improvements to the Win32/x86 port:
1994 ** (user-homedir-pathname) and default initialization file
1995 locations now know about the user's "Documents and Settings"
1996 directory (thanks to Yaroslav Kavenchuk)
1997 ** run-program is implemented (thanks to Mike Thomas)
1998 ** sockets support (thanks to Timothy Ritchey)
1999 ** better backtrace support (thanks to Alastair Bridgewater)
2000 ** sb-grovel supported
2001 ** asdf-install and sb-posix work somewhat
2002 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2003 * improvements to the Solaris/x86 port:
2004 ** works on Solaris 11/Solaris Express
2005 ** floating-point exception handling support
2006 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2007 * fixed some bugs revealed by Paul Dietz' test suite:
2008 ** REMOVE-METHOD returns its generic function argument even when
2009 the method is not one of the generic functions' methods.
2010 ** objects declared as MEMBER types can be admissible arguments to
2011 structure accessors.
2012 ** printing characters should simply be printed by the FORMAT ~:C
2014 ** compiler failure when compiling functions with hairy constant
2015 defaults for optional parameters.
2016 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2017 function, which is already optimized.
2019 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2020 * new platform: experimental support for SBCL x86/Darwin, including
2021 MacOS X 10.4.5 on Intel.
2022 * new feature: Unicode character names are now known to the system
2023 (through CHAR-NAME and NAME-CHAR).
2024 * new feature: the filesystem location of SBCL's core file is
2025 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2026 * minor incompatible change: the contrib modules SB-POSIX and
2027 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2028 this change is to make it easier to distribute
2029 location-independent binaries.
2030 * bug fix: as implied by AMOP, standardized classes no longer have
2031 slots named by external symbols of public packages. (reported by
2033 * optimization: calling functions via constant symbols -- as in
2034 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2035 via the function object as in (FUNCALL #'FOO).
2036 * optimization: on x86 and x86-64, the calling convention for the
2037 case of dealing with an unknown number of values has been altered
2038 to be friendlier to the prediction heuristics implemented,
2039 particularly with reference to CALL and RET pairing. (thanks to
2040 Alastair Bridgewater)
2041 * optimization: on x86, the code for access to thread-local symbol
2042 values and binding/unbinding of thread-local symbols is smaller.
2043 (thanks to Alastair Bridgewater)
2044 * enhancement: CONSTANTP is now able to determine constantness of
2045 more complex forms, including calls to constant-foldable standardized
2046 functions and some special forms beyond QUOTE.
2047 * fixed bug: occasional GC crashes on Solaris/x86
2048 * optimization: x86-64 supports stack allocation of results of simple
2049 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2050 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2051 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2052 (thanks to James Knight)
2053 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2054 by the standard (thanks to Stephen Compall)
2056 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2057 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2058 be used for bundling the runtime and the core file into one
2059 executable binary. This feature is not currently supported on all SBCL
2060 platforms. (thanks to James Bielman and NIIMI Satoshi)
2061 * new feature: a generational or ephemeral garbage collector is now
2062 the default on the PowerPC platform (both Linux and Darwin). The
2063 old Cheney (stop and copy) collector is a build-time option.
2064 (thanks to Cyrus Harmon, after Raymond Toy)
2065 * minor incompatible change: the method by which SBCL finds its
2066 contributed modules has changed; it no longer relies on symbolic
2067 links from an $SBCL_HOME/systems directory, but searches directly
2068 in the subdirectories of $SBCL_HOME.
2069 * enhancement: the dynamic heap size on the Linux/PPC platform is
2070 markedly larger, even using the older Cheney garbage collector.
2071 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2072 certain complicated string types. (reported by Gary King)
2073 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2074 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2075 * fixed bug: DOCUMENTATION on structures no longer signals an
2076 error if no structure type of the right name exists. (reported by
2078 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2079 applicable non-standard primary or :AROUND method on
2080 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2081 no longer cause unbound variable errors. (reported by Kevin Reid)
2082 * fixed bug: metacircle resolution in cases where methods have slots
2083 added before the slots from STANDARD-METHOD. (reported by Jean
2085 * fixed bug: the Power PC assembly code for calling into lisp
2086 sometimes computed its return address wrongly (depending on the
2087 15th bit of the address, fixed at link time). This used to
2088 manifest itself in a segmentation violation while building PCL.
2089 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2090 many others over the years)
2091 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2092 the stack pointer (treated as a signed integer) is negative.
2093 (thanks to Peter van Eynde)
2095 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2096 * new platform: experimental support for the Windows operating
2097 system has been added. (thanks to Alastair Bridgewater)
2098 * fixed several bugs in and robustified the PPC FFI (including
2099 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2100 * bug fix: allow non-simple string symbol names (reported by Paul
2102 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2104 * bug fix: saving a core corrupted callbacks on x86/x86-64
2105 * bug fix: closed a loophole in metacircularity detection and
2106 grounding in the PCL implementation of CLOS.
2107 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2108 (reported by tomppa on #lisp)
2109 * bug fix: clear the direction flag on Lisp -> C transitions, as
2110 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2111 (reported by Andrej Grozin and Hendrik Maryns)
2112 * optimization: major improvements to GC efficiency on GENCGC platforms
2113 * optimization: faster implementation of EQUAL
2114 * optimization: emit more efficient opcodes for some common
2115 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2116 * optimization: several other minor code-generation improvements on x86-64
2117 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2119 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2120 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2121 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2122 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2123 by ANSI as a generic function, and for consistency (SETF
2124 GENERIC-FUNCTION-NAME) is treated likewise.
2125 * fixed bug #233.b: make constraint propagation notice when a variable
2126 value is changed after it is referenced but before it is used
2127 * fixed bug #296: no more arbitrary behaviour from filenames with
2128 odd characters as --load arguments. (reported by Adam Warner)
2129 * fixed bug #390: :CHARACTER-SET pathname components now work as
2130 expected. (reported by Tim Daly Jr)
2131 * fixed bug #391: complicated :TYPE intersections in slot
2132 definitions no longer cause an error in PCL internals.
2133 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2134 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2135 returning the number of octets which would be written to the
2136 file-stream. (thanks to Robert J. Macomber)
2137 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2138 arguments to the internal stream functions. (thanks to David
2140 * bug fix: stack exhaustion is now handled on the x86/SunOS
2141 platform. (thanks to Daisuke Homma)
2142 * bug fix: more accurate ROOM results on GENCGC platforms
2143 * optimization: improved type inference for arithmetic-for
2144 index variables in LOOP
2145 * optimization: faster floating-point SQRT on x86-64
2146 * fixed some bugs revealed by Paul Dietz' test suite:
2147 ** DOCUMENTATION returns NIL instead of "" for method combinations
2148 that don't have a docstring
2150 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2151 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2152 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2153 therefore are not customizeable by user code (as seems to be at
2154 least permitted and maybe required by AMOP). As a consolation,
2155 however, the SBCL implementation of these functions now calls
2156 REINITIALIZE-INSTANCE as specified by AMOP.
2157 * bug fix: slot-definition documentation is propagated as per ANSI
2158 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2159 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2160 argument, as do eslotd initialization methods. (from Pascal
2161 Costanza's "Closer" project)
2162 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2163 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2165 * bug fix: it is now possible to have more than one subclass of
2166 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2167 (reported by Bruno Haible, Pascal Costanza and others)
2168 * bug fix: the dependent update protocol now works for generic
2169 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2170 and Pascal Costanza)
2171 * bug fix: condition-class instances corresponding to
2172 DEFINE-CONDITION forms are now created eagerly. (reported by
2173 Kalle Olavi Niemitalo on comp.lang.lisp)
2174 * bug fix: floating point printing is more accurate in some
2175 circumstances. (thanks to Simon Alexander)
2176 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2177 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2178 * bug fix: callbacks on OS X now preserve stack-alignment.
2179 (thanks to Cyrus Harmon)
2180 * enhancement: the x86-64 disassembler is much better at
2181 disassembling SSE instructions. (thanks to Lutz Euler)
2182 * enhancement: CHECK-TYPE on a variable now allows type-inference
2183 (thanks to Vincent Arkesteijn)
2184 * optimization: improved performance of EUC-JP external format.
2185 (thanks to NIIMI Satoshi)
2186 * optimization: performance improvements to IO on file streams of
2187 :ELEMENT-TYPE CHARACTER
2188 * optimization: much faster memory allocation on x86-64
2189 * optimization: faster garbage collections (latency and throughput)
2191 * optimization: faster bignum subtraction and division on x86 and x86-64
2192 (thanks to Lutz Euler)
2193 * optimization: more accurate type-inference for loops that use a
2194 floating point index variable or a negative step.
2196 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2197 * bug fix: add a workaround to SBCL looping infinitely at startup on
2198 Linux kernels with apparently buggy implementations of personality().
2199 (thanks to Svein Ove Aas)
2200 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2201 (thanks to David Lichteblau)
2202 * bug fix: local bindings shadow global symbol macros for
2203 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2204 * optimization: non-open coded uses of numeric comparison operators
2205 (e.g. >) no longer cons when called with more than one parameter
2206 on platforms supporting dynamic-extent allocation.
2207 * enhancement: saving cores with foreign code loaded is now supported
2208 on MIPS/Linux in addition to the previously supported platforms.
2209 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2210 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2211 * bug fix: division by zero in sb-sprof when no samples were collected
2212 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2213 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2214 (thanks to Alexander Kjeldaas)
2215 * new feature: ignoring the return values of destructive functions
2216 like NREVERSE signals a compile-time style-warning.
2217 (thanks to Kevin Reid)
2218 * new feature: the alignment of alien structure fields can be
2219 explicitly specified. (thanks to Cyrus Harmon)
2220 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2221 and dump core on SIGQUIT
2223 ** incompatible change: threads do not inherit values of specials
2224 from their parents (see manual)
2225 ** bug fix: threads stacks belonging to dead threads are freed by the
2226 next exiting thread, no need to gc to collect thread stacks anymore
2227 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2228 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2229 ** bug fix: dynamic variable and thread start related gc lossage
2230 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2232 * fixed some bugs revealed by Paul Dietz' test suite:
2233 ** SUBTYPEP is slightly more accurate on heinously complicated
2234 CONS types where some of the members have uncertain (in the
2235 NIL, NIL sense) type relationships to each other.
2237 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2238 no longer purified unless :PURIFY T is explicitly specified.
2239 ** Non-purified cores are significantly smaller than before
2241 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2242 * new feature: timers based on Zach Beane's excellent timer package
2243 * added support for the following external formats: koi8-u,
2244 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2245 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2246 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2247 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2248 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2249 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2250 * incompatible change: a threaded SBCL will no longer revert to
2251 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2252 * bug fix: interrupts are disabled until startup is complete; no
2253 more sigsegvs when receiving a signal to soon
2254 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2256 * bug fix: add a workaround for the memory randomization features in
2257 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2258 workaround will only be in effect on systems with the proc filesystem
2260 * bug fix: printing objects of type HASH-TABLE signals a
2261 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2263 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2264 have been running for over 50 days. (reported by Gilbert Baumann)
2265 * bug fix: the logic for getting names of functions gets less
2266 confused when confronded with alternate-metaclass
2267 funcallable-instances. (reported by Cyrus Harmon)
2268 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2269 consistent, even on internal alternate-metaclass objects.
2270 * bug fix: flush closure information collected by physical
2271 environment analysis prepass before the main pass. (bug reported
2273 * bug fix: compiler pack phase does not modify a hashtable, which is
2274 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2275 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2276 may be expanded. (reported by Alexander <malishev> on c.l.l)
2277 * bug fix: no more style-warnings when compiling code using LAST
2278 under high-SPEED low-SPACE settings. (reported by David Wallin
2280 * fixed some incompatibilities between SBCL's MOP and the MOP
2282 ** the METAOBJECT class is now implemented;
2283 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2284 STANDARD-OBJECT, as required;
2285 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2286 now compatible (as required by VALIDATE-SUPERCLASS); there
2287 remains a consistency requirement over the presence or absence
2288 of the FUNCTION class in the superclass list of finalized
2289 classes; see the manual for more details;
2290 ** the :AROUND method for COMPUTE-SLOTS on
2291 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2292 requested slot ordering.
2294 ** bug fix: parent thread now can be gc'ed even with a live
2296 ** bug fix: binding a special with PROGV to no value is not
2297 the same as that symbol not having been bound (thanks to
2299 ** bug fix: binding specials is thread safe (thanks to
2301 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2302 and SB-SPROF do not die with 'no handler for signal XX in
2303 interrupt_handle_now(..)' anymore
2304 ** bug fix: WITH-TIMEOUT works with multiple running threads
2305 * fixed some bugs revealed by Paul Dietz' test suite:
2306 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2307 the :method-class keyword argument.
2309 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2310 * new port: the Solaris operating system on x86 processors is now
2311 mostly supported, though some rough edges in the environment
2312 remain. (thanks to Daisuke Homma)
2313 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2314 space for its heap. (thanks to Thiemo Seufer)
2315 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2316 closures. (thanks to Thiemo Seufer)
2317 * minor incompatible change: eof selects abort in the debugger.
2318 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2319 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2321 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2322 deprecated, and will go away in a future revision of SBCL.
2323 * minor incompatible change: GC-ON and GC-OFF are no longer
2324 implemented with a counter, it does not matter how many times gc
2325 is switched on or off
2326 * bug fix: discriminating functions for generic function classes
2327 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2328 make invalid assumptions about method precedence order. (reported
2330 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2331 platforms. (thanks to Thiemo Seufer)
2332 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2333 * bug fix: correct pathname printing with printer escaping is on.
2334 (thanks to Kevin Reid)
2335 * bug fix: complex VOP definitions in "user-space" no longer trigger
2336 package locks. (reported by Zach Beane)
2337 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2338 for funcallable-instance functions, and is no different from
2340 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2341 characters in the current readtable. (reported by Nicholas Neuss)
2342 * bug fix: SUBTYPEP on various CONS types returns more a more
2343 accurate acknowledgment of its certainty.
2344 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2345 lists in some cases. This partially fixes bug 384.
2346 * flush all standard streams before prompting in the REPL and the
2348 * bug fix: signal handling and triggering gc do not conflict
2349 directly anymore, in particular a high frequency sb-sprof does
2350 not prevent gc from running
2351 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2352 approximation for timezone and DST information between the
2353 universal time epoch and the smallest negative 32-bit time_t.
2354 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2355 year 1899 so long as the encoded time is non-negative.
2356 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2357 the correct answer for non-constant rotate amounts when performing
2358 an inline 32-bit rotation.
2360 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2361 there is only one thread in the session
2362 ** bug fix: memory leak for streams created in one thread and
2363 written to in another
2364 ** bug fix: lockup when compiled with gcc4
2365 ** bug fix: race that allows the gc to be triggered when gc is
2367 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2368 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2370 ** bug fix: finished threads are gc'ed properly
2371 * fixed some bugs revealed by Paul Dietz' test suite:
2372 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2373 has arguments with a different set of applicable methods from
2374 the orignal arguments.
2375 ** The type error thrown by MAP now has a correct expected-type
2377 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2378 name a compiled function.
2379 ** Three MISC tests where a large bignum was improperly coerced to
2380 a float that couldn't represent that bignum during type
2381 derivation were fixed.
2382 ** SUBTYPEP can now handle types involving the negation of a
2383 list-form FUNCTION type.
2384 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2385 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2386 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2388 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2389 * New feature: Experimental support for bivalent streams: streams
2390 opened with :element-type :default now allow character and binary
2391 (unsigned-byte 8) I/O
2392 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2393 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2395 * bug fix: no more highly sporadic "couldn't check whether ~S is
2396 readable" when reading a stream and an interrupt hits in the middle
2397 of a select system call
2398 * compiler better recognizes complex arrays (reported by Eduardo
2400 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2401 for variables on SBCL built with linkage-tables. (reported by Luis
2403 * various error reporting improvements.
2404 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2405 (Thanks to Thiemo Seufer)
2406 * bug fix: nested reader invokations work correctly
2407 * bug fix: it is possible to have simultaneous references to foreign
2408 code and foreign data with the same name.
2410 ** added x86-64 support
2411 ** incompatible change: the threading api now works with thread
2412 objects instead of thread ids
2413 ** bug fix: threads are protected from signals and interruption when
2414 starting up or going down
2415 ** bug fix: a race where an exiting thread could lose its stack to gc
2416 ** bug fix: don't halt on infinite error in threads if possible
2417 ** fixed numerous gc deadlocks introduced in the pthread merge
2418 ** bug fix: fixed thread safety issues in read and print
2419 ** bug fix: debugger doesn't hang on session lock if interrupted at
2420 an inappropriate moment
2421 ** bug fix: run-program is now thread safe(r)
2422 ** bug fix: inner with-recursive-lock no longer releases the mutex
2423 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2424 * fixed some bugs revealed by Paul Dietz' test suite:
2425 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2426 EXPECTED-TYPE slots filled.
2427 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2429 ** MAKE-CONDITION accepts classes as type-designators.
2430 ** COMPILE may never return NIL.
2431 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2432 range before calling Unix time functions
2434 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2435 * numerous signal handling fixes to increase stability
2436 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2437 * minor incompatible change: we now correctly canonize default
2438 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2439 as per the MOP, rather than the historical (INITARG INITFUNCTION
2440 INITFORM). (reported by Bruno Haible)
2441 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2442 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2443 for more information.
2444 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2445 pathname is a directory pathname.
2446 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2447 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2449 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2450 :METACLASS argument in addition to a class name. (reported by
2451 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2452 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2453 (reported by Bruno Haible; patch from Gerd Moellmann)
2454 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2456 * bug fix: more cleanups to the floating point exception handling on
2457 x86-64 (thanks to James Knight)
2458 * bug fix: the compiler does not try to constant fold calls of
2459 COERCE and BIT-* functions when they return freshly constructed
2460 objects. (reported by Nikodemus Siivola and Paul Dietz)
2461 * optimization: improved the MIPS versions of generic (in the
2462 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2463 * optimization: direct conversion of (unsigned-byte 32) to floats on
2464 the PowerPC platform.
2465 * optimization: structure instances with raw slots now use less
2466 memory, and probably show better memory locality. (thanks to
2468 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2469 are treated as requests for stack allocation on the x86-64,
2470 Alpha-32, PPC and SPARC platforms.
2471 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2472 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2473 (thanks to Tony Martinez)
2475 ** gcing a dead thread can no longer lead to lockups
2476 ** threads block signals until they are set up properly
2477 ** errno is no longer shared by threads
2478 ** interrupt-thread restores the eflags register on x86
2479 ** fixed some lockups due to gc/thread interaction
2480 * fixed some bugs revealed by Paul Dietz' test suite:
2481 ** invalid dotted lists no longer raise a read error when
2482 *READ-SUPPRESS* is T
2483 ** signal an error if a symbol that names a declaration is used
2484 as the name of a type, or vice versa
2485 ** allow using the (declare (typespec var*)) abbreviation for
2486 (declare (type typespec var*)) with all type specifiers
2487 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2488 ** always return NIL from PPRINT-POP when OBJECT is NIL
2489 ** don't signal errors when pretty-printing malformed LABELS,
2490 FLET or MACROLET forms
2491 ** declarations in a DOLIST body are also in scope for the
2493 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2495 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2498 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2499 * fixed cross-compiler leakages that prevented building a 32-bit
2500 target with a 64-bit host compiler.
2501 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2502 opened with :IF-EXISTS :OVERWRITE.
2503 * fixed bug 281: error for an invalid qualifier in a short-form method
2504 combination method is not signalled until the faulty method is called.
2505 * bug fix: iteration variable type inferrer failed to deal with open
2506 intervals. (reported by Alan Shields)
2507 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2508 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2509 or more runtime options were provided to the sbcl binary.
2510 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2511 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2512 * optimization: there's now a fast-path for fixnum arguments in the
2513 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2514 * optimization: the code generated on x86-64 is more compact thanks
2515 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2516 * bug fix: floating-point exception handling now partly works on
2517 x86-64. (Thanks to James Knight)
2518 * improvement to the MIPS backend from Thiemo Seufer: C-style
2519 64-bit long long arguments and return values to alien functions
2521 * fixed some bugs revealed by Paul Dietz' test suite:
2522 ** the type-error signalled from WARN has a filled-in DATUM slot.
2523 ** the type-error required when a stream is not associated with
2524 a file has the stream as its datum.
2525 ** type-errors on single-floats on x86-64 no longer have
2526 :INVALID-OBJECT as the datum
2527 ** the type-errors signalled for invalid function names now have
2528 a correct expected type
2529 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2530 for structures defined with a :TYPE. Documentation strings for
2531 typed structures are no longer immediately discarded
2532 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2533 broadcast streams and synonym streams. FILE-LENGTH now also works
2534 on broadcast streams.
2536 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2537 * incompatible change: the --noprogrammer option, deprecated since
2538 version 0.7.5, has been removed. Please use the equivalent
2539 --disable-debugger option instead.
2540 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2542 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2543 inoperational for a while now) has been completely removed.
2544 * null lexical environments are now printed as #<NULL-LEXENV>,
2545 significantly reducing the amount of clutter in typical backtraces.
2546 * documentation on weak pointers, finalization, and after GC hooks
2547 has been added to the manual.
2548 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2549 as other specialized array types, is much faster. SUBSEQ and
2550 COPY-SEQ on such arrays have also been sped up.
2551 * optimization: EQL is now more efficient when at least other argument
2552 is known to be of type (OR FIXNUM (NOT NUMBER)).
2553 * fixed bug: the runtime is now less vulnerable to changes in the
2554 size of the SBCL object on OS X, and virtual memory is reserved for
2555 all spaces that need to be at a fixed address.
2556 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2557 * fixed bug: finalizers and after GC hooks that cause consing are now
2559 * fixed bug: compiler error messages and summaries are now printed to
2560 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2561 * fixed inference of the upper bound of an iteration variable.
2562 (reported by Rajat Datta).
2563 * fixed bug 211e: calling local functions with duplicated constant
2564 keyword argument no longer causes a bogus style warning about an
2566 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2567 ftype declaration to be disregarded. (reported by Dave Roberts)
2568 * fixed bug 373: caused by erronous compilation of references to alien
2569 variables in the runtime on ppc/darwin.
2570 * fixed bug 376: CONJUGATE type deriver.
2571 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2572 (reported by Baughn on #lisp)
2573 * a cross-compiler bug on non-x86 platforms has been identified and
2574 fixed. (thanks to Bruno Haible)
2575 * improvements to the MIPS runtime code for increased stability.
2576 (thanks to Thiemo Seufer)
2577 * increased the maximimum compact environment size to allow
2578 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2579 * partial workaround for bug 135: don't name the function we're
2580 calling for hairy cases of EVAL, so as not to accumulate one environment
2581 entry per call to EVAL. (reported by Kevin Reid)
2582 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2583 * optimization: type testing for non-vector arrays should be faster.
2584 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2586 * bug fix: setting 31st element of a bit vector to zero did not work
2588 * bug fix: redefining a class definition which failed due to a
2589 previous accessor / function clash now works (but see BUGS entry
2590 #380 for more problems in this area). (thanks to Zach Beane)
2591 * the long form of DEFINE-METHOD-COMBINATION disables method group
2592 checking when given a single method group with pattern *. (thanks
2594 * on x86 compiler supports stack allocation of results of simple
2595 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2596 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2597 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2598 * fixed some bugs related to Unicode integration:
2599 ** the restarts for recovering from input and output encoding
2600 errors only appear when there is in fact such an error to
2602 * fixed some bugs revealed by Paul Dietz' test suite:
2603 ** MISC.549 and similar: late transformation of unsafe type
2604 assertions into derived types caused unexpected code
2606 ** SCALE-FLOAT type deriver is less wrong.
2607 ** type derivers for EXP, LOG and similar functions compute result
2608 types for complex arguments better.
2609 ** (MISC.563) CONJUGATE type deriver works for very restricted
2611 ** out-of-line type testers for character strings are available.
2612 ** EQUAL compiler transform understands specialness of objects
2614 ** accessing double-floats stored on the stack now works on x86-64.
2615 ** debugger internals could sometimes create invalid lispobjs,
2616 resulting in GC crashes.
2617 ** MISC.548: type check weakening can convert required type into
2619 ** initialization forms for bindings are not in scope of free special
2622 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2623 * incompatible change: thread support for non-NPTL systems has
2624 been removed - locking is buggy and unreliable. A threaded
2625 SBCL build will now warn at startup and refuse to create
2626 new threads, unless futex support is detected in the kernel
2627 * incompatible change: the top level REPL now has only an ABORT
2628 restart associated with it, not TOPLEVEL and ABORT as it used to.
2629 TOP and TOPLEVEL are now available as debugger commands for
2630 returning to the top level.
2631 * incompatible change: forms evaluated in the REPL now use the
2632 global optimization policy.
2633 * incompatible change: user- and system-initialization files are
2634 no longer processed with LOAD, but by READ and EVAL; hence the
2635 global optimization policy, startup package, readtable, etc,
2637 * The .fasl file format number has been incremented because of
2638 various incompatible changes.
2639 * internal entry point details and argument counts no longer appear
2640 in backtraces unless explicitly requested by setting
2641 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2642 * built-in and standard functions no longer have names like "top
2643 level local call to FOO".
2644 * fixed bug 32: functions defined in non-null lexical environments
2645 now have more legible printed representation
2646 * fixed bug 33: functions defined in non-null lexical environemnts
2647 are now more amenable to inspection by INSPECT.
2648 * workaround for bug 354: XEPs no longer appear in backtraces unless
2649 explicitly requested.
2650 * fixed bug: receiving the signal which results from attempting to
2651 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2652 SIGBUS on other *BSDs) on architectures where the C stack is also
2653 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2654 to debugger confusion or wild instability. (reported by Cheuksan
2656 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2657 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2658 (reported by Lutz Euler)
2659 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2660 compiled code. (reported by Paul Dietz)
2661 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2662 specialized parameter to a method to something that is not TYPEP
2663 the specializer is now possible.
2664 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2665 face of package deletion.
2666 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2667 pathname. (reported by David Tolpin on c.l.l)
2668 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2669 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2670 STRING-STREAM and FILE-STREAM, respectively.
2671 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2672 than previously; in addition, its test suite is now run on build.
2673 (thanks to Luke Gorrie)
2674 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2675 * optimization: added a immediate representation for single-floats
2677 * fixed some bugs revealed by Paul Dietz' test suite:
2678 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2679 ** attempting to create a package with a colliding nickname causes
2680 correctable errors to be signalled.
2681 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2682 ** several x86-64 backend bugs related to sign-extension of immediate
2685 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2686 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2687 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2689 * fixed loading of multiply forward-referenced layouts.
2690 (thanks to Cheuksan Wang)
2691 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2692 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2693 (see COMPILE-FILE documentation for details of :PRINT option)
2694 * fixed bugs 19 and 317: fixed-format floating point printing is
2695 more accurate. This also fixes a bug reported by Adam Warner
2696 related to the ~@F format directive.
2697 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2699 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2700 dispatch table if the from-char is a dispatch macro character.
2701 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2702 by the wordsize no longer ignore the last word. (reported by Lutz
2704 * fixed bug in type checking of dynamic-extent variables. (reported
2706 * optimization: sequence traversal functions use their freedom to
2707 coerce function designators to functions.
2708 * optimization: code with many calls to CLOS methods specialized on
2709 CLOS classes has had redundant type checks removed.
2710 * optimization: added declarations to speed up operations that access
2711 the internal character database (for example STRING-UPCASE)
2712 * optimization: comparison operations between floats and sufficiently small
2713 fixnums no longer create extra rationals
2714 * fixed some bugs related to Unicode integration:
2715 ** portions of multibyte characters at the end of buffers for
2716 character-based file input are correctly transferred to the
2717 start of the buffer at the next read.
2718 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2719 passing it through to OPEN.
2720 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2721 argument given to internal calls to OPEN.
2722 ** the built-in comment readers (introduced by character sequences
2723 ";" and "#|") are more forgiving to encoding errors; they will
2724 STYLE-WARN and then attempt to resync the stream at a character
2725 boundary. (thanks to Teemu Kalvas)
2726 * fixed some bugs in the x86-64 port:
2727 ** Negative short int return values from c-calls are sign-extended
2729 ** The stack is aligned to 16-bytes for c-calls, as required by
2730 the ABI. (thanks to Cheuksan Wang)
2731 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2732 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2733 for enums. (thanks to Vincent Arkesteijn)
2734 ** Multiple small optimizations and bugfixes for floating point
2736 * fixed some bugs revealed by Paul Dietz' test suite:
2737 ** Space, Tab, Linefeed, Return and Page have the invalid
2738 secondary constituent character trait.
2739 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2741 ** WITH-INPUT-FROM-STRING should only update the index place on
2743 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2744 works more reliably.
2745 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2746 with one-dimensional arrays with fill pointers.
2747 ** TYPE-OF failed on a complex with an integer realpart and a
2749 ** compiler failure during type inference for the code of form
2750 (IF (EQL X (THE ...)) ...) (MISC.535).
2752 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2753 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2754 platform. The port supports 61-bit fixnums, large memory spaces
2755 and reloading shared object files.
2756 * enhancement: saving cores with foreign code loaded is now
2757 supported on ppc/Darwin in addition to the previously supported
2759 * enhancement: the statistical profiler now walks deeper into the
2760 call stack for more meaningful call-graphs and accrued time
2761 reports (x86/x86-64 only). It also now reports time spent in
2763 * enhancement: it is now possible to trace most individual methods
2764 of a generic function in addition to tracing the generic function
2766 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2768 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2769 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2770 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2771 produces an error. (thanks to Vincent Arkesteijn)
2772 * bug fix: NAMESTRING on pathnames with :WILD components in their
2773 directories works correctly. (thanks to Artem V. Andreev)
2774 * fixed bug 125: compiler preserves identity of closures. (reported
2776 * bug fixed: functions with &REST arguments sometimes failed with
2777 "Undefined function" when compiled with (DEBUG 3). (reported by
2779 * bug fix: overflow during compiling of setting element of a bit
2780 vector with constant index and value. (reported by Timmy Douglas)
2781 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2782 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2783 * on x86 compiler partially supports stack allocation of dynamic-extent
2785 * GO and RETURN-FROM do not check the extent of their exit points
2786 when compiled with SAFETY 0.
2787 * fixed some bugs related to Unicode integration:
2788 ** encoding and decoding errors are now much more robustly
2789 handled; it should now be possible to recover even from invalid
2790 input or output to the terminal. (thanks to Teemu Kalvas)
2791 ** provided a first cut at implementing STRING-TO-OCTETS and
2792 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2793 ** altered the SB-MD5 contributed module slightly, changing the
2794 interface just enough for it to be supportable for builds where
2795 lisp characters are not eight bits.
2796 * fixed some bugs revealed by Paul Dietz' test suite:
2797 ** the FORMATTER-generated functions for ~V[ conditionals require
2798 the correct number of arguments.
2799 ** READ-FROM-STRING returns the mandated second value when applied
2800 to displaced strings.
2801 ** the #\Rubout and #\Backspace characters are treated as invalid
2802 constituent characters by the tokenizer.
2804 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2805 * new feature: reloading changed shared object files with
2806 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2807 * new feature: references to foreign variables and functions
2808 can now be compiled and loaded before the corresponding shared
2809 object file is loaded, as long as the foreign definitions are
2810 available at runtime.
2811 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2812 supported. (thanks to Dan Debertin)
2813 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2814 just keywords. (thanks to Vincent Arkesteijn)
2815 * fixed bug #331: structure-class instances corresponding to
2816 DEFSTRUCT forms are now created eagerly.
2817 * fixed bug #345: backtraces from calls to undefined functions work
2818 on x86 as well. Related bug #61 is now also partially fixed on x86
2819 (backtraces from throws to unknown catch tags.)
2820 * bug fix: lambda-list parsing is now stricter vrt. order and number
2821 of lambda-list keywords.
2822 * bug fix: as specified by AMOP, an error is signalled if a
2823 class-option appears multiple times in a DEFCLASS form. (reported
2825 * bug fix: RANDOM can be compiled when the compiler derives the type
2826 of its numeric argument as a disjoint set of small integers.
2827 (reported by Paul Dietz)
2828 * bug fix: starting a core saved with shared objects loaded when
2829 those objects are not available no longer causes threaded SBCL to
2830 hang. (reported by Sean Ross)
2831 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2833 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2834 argument, which must always be NIL. (reported by Kalle Niemitalo)
2835 * bug fix: printing 1.0d+23 no longer results in an error.
2836 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2837 * bug fix: structure slot setters preserve evaluation order. (thanks
2839 * fixed some bugs related to Unicode integration:
2840 ** RUN-PROGRAM can allow its child to take input from a Lisp
2841 stream. (reported by Stefan Scholl)
2842 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2843 locales. (reported by Ken Causey)
2844 * fixed some bugs revealed by Paul Dietz' test suite:
2845 ** INCF, DECF and REMF evaluate their place form as specified in
2847 ** FORMATTER expands ~{ ~} iteration directives with V or #
2848 parameters correctly.
2849 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2850 consequent uses no arguments correctly.
2851 ** the system has a partial understanding of the (COMPLEX RATIO)
2853 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2856 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2857 * new feature: a build-time option (controlled by the :SB-UNICODE
2858 keyword feature, enabled by default) for building the system with
2859 support for the entire 21-bit character space defined by the
2861 * new feature: the system now has rudimentary external-format
2862 support; the primary user-visible change at this time is that
2863 characters with the high bit set (such as lower-case-e-acute) will
2864 print correctly to a terminal in a UTF-8 environment.
2865 * minor incompatible change: BASE-CHAR no longer names a class;
2866 however, CHARACTER continues to do so, as required by ANSI.
2867 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2868 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2869 has been moved to the SB-EXT package (temporarily re-exported from
2871 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2872 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2874 * fixed bug #351: better error-handlind and reporting for malformed
2876 * fixed bug #350: bignum-printing is now more memory-efficient,
2877 allowing printing of very large bignums, eg. (expt 2 10000000).
2878 (reported by Bruno Haible)
2879 * fixed bug #302: better primitive-type selection for intersection
2881 * fixed bug #308: non-graphic characters now all have names, as
2882 required. (reported by Bruno Haible)
2883 * bug fix: redefining a class with different superclasses now correctly
2884 removes it from the direct-subclasses of its previous superclasses.
2885 (reported by David Morse)
2886 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2887 new value now works. (reported by Bruno Haible)
2888 * bug fix: correct canonicalization of multiple non-standard slot
2889 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2890 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2891 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2892 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2893 now exists, an signals an error.
2894 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2895 during macroexpansion for non-iteration variables as well. (reported
2896 by Bruno Haible for CMUCL)
2897 * bug fix: Cyclic structures and unprintable objects in compiler
2898 messages no longer cause errors. (reported by Bruno Haible)
2899 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2900 and READ-FROM-STRING all now return a primary value of NIL if
2901 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2902 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2903 (reported by Bruno Haible for CMUCL)
2904 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2905 do not designate a condition. (reported by Bruno Haible for
2907 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2908 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2909 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2910 permitting resolution in favour of any of the conflicting symbols.
2911 (reported by Bruno Haible for CMUCL)
2912 * bug fix: EQUAL compiler optimizations is less aggressive on
2913 strings which can potentially compare true despite having distinct
2914 specialized array element types.
2915 * bug fix: unit enumerations can be defined without dividing by
2916 zero. (thanks to Vincent Arkesteijn)
2917 * FORMAT compile-time argument count checking has been enhanced.
2918 (report from Bruno Haible for CMUCL)
2919 * a partial workaround for the bug 262: the compiler does not try to
2920 inline-expand a local function doing RETURN-FROM from a deleted
2921 BLOCK. (thanks to Peter Denno for the bug report and to David
2922 Wragg for the simple test case)
2923 * fixed some bugs revealed by Paul Dietz' test suite:
2924 ** RENAME-PACKAGE allows all package designators as new package
2926 ** constraint propagation and lambda variable substitution are
2927 more cautious in dealing with partially deleted code.
2928 ** compiler sometimes lost reoptimization passes.
2929 ** CERROR, given a condition as condition designator, passes its
2930 remaining arguments to the continue format control without
2932 ** Case-altering FORMAT directives work correctly on non-ASCII
2934 ** The REAL type specifier handles bounds outside the floating
2935 point ranges without signalling FLOATING-POINT-OVERFLOW.
2936 ** Functions with IR1-transformations can create intercomponent
2937 references to global functions.
2938 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2940 ** FORMAT ~R treats a nil value for its first parameter correctly.
2942 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2943 * enhancement: saving cores with foreign code loaded is now
2944 supported on x86/NetBSD and sparc/Linux in addition to the previously
2945 supported platforms.
2946 * bug fix: on some platforms repeated installations caused multiple
2947 copies of HTML documentation to be installed -- should not happen
2948 any more. (reported by Stefan Scholl)
2949 * bug fix: parsing self-recursive alien record types multiple times
2950 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2951 original patch by Helmut Eller for CMUCL)
2952 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2953 (thanks to Richard Kreuter)
2954 * bug fix: defining classes whose accessors are methods on existing
2955 generic functions in other (locked) packages no longer signals
2956 bogus package lock violations. (reported by François-René Rideau)
2957 * bug fix: special variables as DEFMETHOD parameters no longer have
2958 associated bogus type declarations. (reported by David Wragg and
2960 * bug fix: read-write consistency on streams of element-type
2961 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2962 * bug fix: redefiniton of the only method of a generic function with
2963 no DEFGENERIC no longer emits a full WARNING. In addition,
2964 redefinition of generic functions with no DEFGENERIC to an
2965 incompatible lambda list now signals an error. (thanks to Zach
2967 * bug fix: DEFGENERIC now works even when there's a function of the
2968 same name in an enclosing lexical environment. (thanks to Zach
2970 * fixed compiler failure, caused by instrumenting code during
2971 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2972 * optimization: added loop analysis and improved register allocation
2973 * fixed some bugs revealed by Paul Dietz' test suite:
2974 ** POSITION on displaced vectors with non-zero displacement
2975 returns the right answer.
2976 ** (SIMPLE-STRING) is a valid type specifier for sequence
2978 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2980 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2981 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2983 ** The justification version of the FORMAT ~< directive treats
2984 non-zero minpad parameter correctly.
2986 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2987 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2988 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2989 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2990 the supported interface.
2991 * new feature: Single-stepping of code compiled with DEBUG 2 or
2992 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2993 * new feature: saving cores with foreign code loaded is now
2994 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2995 Timothy Moore's work for CMUCL)
2996 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2997 parameters to * instead of NIL if no initform is supplied.
2998 (reported by Johan Bockgaard)
2999 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3000 correctly when FUNCALL appears as the car of the form. Note:
3001 despite this FUNCALL forms are not currently subject to
3002 compiler-macro expansion. (port of Raymond Toy's fix for the
3003 same from CMUCL, reported by Johan Bockgaard)
3004 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3005 (thanks for Teemu Kalvas)
3006 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3007 case instead of terminating the iteration (thanks for Julian
3008 Squires, Sean Champ and Raymond Toy)
3009 * bug fix: incorrect expansion of defgeneric that caused a style
3010 warning. (thanks for Zach Beane)
3011 * bug fix: slot accessor effective method computation works properly
3012 for classes with multiple non-standard applicable methods on
3013 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3014 * on x86 compiler supports stack allocation of results of LIST and
3015 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3016 CMUCL implementation by Gerd Moellmann)
3017 * fixed some bugs revealed by Paul Dietz' test suite:
3018 ** FORMAT strings with both the ~<~:;~> form of the justification
3019 directive and pretty-printing directives cause an error.
3021 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3022 * incompatible change: the internal functions
3023 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3024 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3025 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3026 instead of the old functions.
3027 * new feature: on platforms where "dladdr" is available foreign
3028 function names now appear in backtraces. (based on Helmut Eller's
3030 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3031 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3033 * documentation: ASDF manual is now distributed with SBCL.
3034 * bug fix: SBCL can now load its contributed modules with REQUIRE
3035 even if the system-provided entries have been removed from
3036 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3038 * bug fix: backtraces involving undefined functions or assembly
3039 routines are more informative. (thanks to Brian Downing)
3040 * bug fix: mutually referent alien structures now work correctly.
3041 (reported by Rick Taube)
3042 * bug fix: structures defined by WITH-ALIEN can be referred to
3043 within other definitions in the same WITH-ALIEN.
3044 * bug fix: division operators (MOD, TRUNCATE and the like) with
3045 constant zero divisors and integer dividends no longer generate
3047 * bug fix: provide default methods for INPUT-STREAM-P and
3048 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3049 * bug fix: improve the detection and resolution of MOP metacycles
3050 (where effective method computation depends on the generic function
3051 having its effective method computed). (reported by Bruno Haible)
3052 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3053 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3054 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3055 * bug fix: pathnames with relative directory components can be
3056 represented relative to default pathnames.
3057 * optimization: in taking the GCD of bignums, reduce the two bignums
3058 to approximately the same size (using Euclid's algorithm) before
3059 applying the more sophisticated binary GCD. (thanks to Juho
3061 * optimization: COUNT on bitvectors now operates word-at-a-time.
3062 * optimization: ASH with a positive, but not necessarily constant,
3063 (leftwards) shift, when in a modular context, is compiled to a
3065 * fixed some bugs revealed by Paul Dietz' test suite:
3066 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3067 if the corresponding argument is NIL.
3068 ** FORMAT directives accepting a minpad parameter treat negative
3070 ** literal commas as character parameters to FORMAT directives are
3072 ** literal spaces directly after ~<Newline> directives within a
3073 format-logical-block (~:< ~@:>) do not induce :FILL-style
3074 conditional newlines.
3075 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3076 as specified: it no longer includes conditional newlines).
3077 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3079 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3080 :PER-LINE-PREFIX argument does not evaluate to a string.
3082 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3083 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3084 the manual for details; for now, package locks can be disabled by
3085 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3086 if no major problems are found then it is likely that they will be
3087 compiled in unconditionally.
3088 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3089 unsupported operators on all platforms. To load a shared library
3090 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3091 object file, link it into a shared library outside of SBCL and
3092 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3094 * bug workaround: ROOM T and the GC were not working together
3095 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3096 reporting facility aren't preserved. That reporting has been
3097 disabled, so now until and unless someone figures out how to make it
3098 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3099 * minor incompatible change: as threatened around sbcl-0.8.0, the
3100 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3101 The symbols are also exported from SB-PCL for backwards
3102 compatibility, but more so than before SB-PCL should be treated as
3103 an implementation-internal package.
3104 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3106 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3107 It is known as of this release not to work on the Alpha, however.
3108 * fixed bug #167: errors signalled due to illegal syntax in method
3109 bodies are now more legible.
3110 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3111 designators and can hence be used with TYPEP.
3112 * fixed bug #333: CHECK-TYPE now ensures that the type error
3113 signalled, if any, has the right object to be accessed by
3114 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3115 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3116 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3118 * fixed bug #334: programmatic addition of slots using specialized
3119 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3120 and :ALLOCATION :CLASS slots.
3121 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3122 float exponents. (rereported by Peter Seibel)
3123 * fixed a bug: #\Space (and other whitespace characters) are no
3124 longer considered to be macro characters in standard syntax by
3125 GET-MACRO-CHARACTER.
3126 * fixed bug: initialization of condition class metaobjects no longer
3127 causes an instance of the condition to be created. (reported by
3129 * fixed bug: it is now possible to have slots such that
3130 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3131 description is neither :INSTANCE nor :CLASS.
3132 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3133 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3134 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3135 non-standard SLOT-DEFINITION-ALLOCATION values.
3136 * fixed bugs: various race conditions handling exiting threads.
3137 CL-PPCRE's thread torture test now passes.
3138 * fixed arguably-a-bug: GC time proportional to number of threads in
3139 system even when most of them are idle
3140 * optimization: improved performance of BIT and SBIT on bit-vectors.
3141 * .fasl file incompatibility: The fasl file version number has
3142 been incremented because of changes associated with package locks.
3144 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3145 * minor incompatible change: the system no longer provides
3146 optimization hints (conditions which are TYPEP
3147 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3148 mode; these hints are still emitted when higher SPEED optimization
3150 * new contrib module: a sampling profiler (profiling by statistical
3151 sampling, rather than by instrumenting functions) is available as
3152 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3153 * the behaviour of the standard function ED is now customizeable by
3154 third parties through a hook variable: see ED's documentation
3155 string for information on the protocol.
3156 * the compiler no longer emits efficiency notes for (FUNCALL X)
3157 when the type of X is uncertain under default optimization
3159 * fixed bug 276: mutating a binding of a specialized parameter to a
3160 method to something that is not TYPEP the specializer is now
3162 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3163 exhibit the required behaviour on the x86 platform. (thanks to
3164 Peter van Eynde, Eric Marsden and Bruno Haible)
3165 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3166 even for difficult arguments. (reported by Peter Graves)
3167 * fixed bug 141a: the backquote printer now descends quoted
3169 * fixed another bug in backquote printing: no more destructive
3170 modification of the form's list structure. (reported by Brian
3172 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3173 move between its address being taken and the call to
3174 interrupt_thread, fixing a crashing race condition.
3175 * the SB-POSIX contrib implementation has been adjusted so that it
3176 no longer exhibits ridiculously poor performance when constructing
3177 instances corresponding to C structs.
3179 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3180 * minor incompatible change: the sb-grovel contrib now treats C
3181 structures as alien (in the sense of SB-ALIEN) objects rather than
3182 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3183 has implications for memory management of client code
3184 (sb-grovel-returned objects must now be manually managed) and for
3185 type safety (alien objects now have full types).
3186 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3187 used to control emission of compiler diagnostics, rather than the
3188 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3189 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3190 quality should be considered deprecated.
3191 * install.sh now installs the user manual as well
3192 * (not quite a new documentable feature, but worth considering in
3193 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3194 beginnings of a semantically meaningful condition hierarchy is
3195 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3197 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3198 designator as the defaults argument.
3199 * fixed bug: Displaced arrays whose displaced-to array has become
3200 too small now cause ARRAY-DIMENSION to signal an error, providing
3201 for safer bounds-checking. (reported by Bruno Haible)
3202 * fixed bug: DEFCLASS slot definitions with identical :READER and
3203 :WRITER names now signal a reasonable error. (reported by Thomas
3205 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3207 * fixed bug: Invalid slot specification errors now print correctly.
3208 (thanks to Zach Beane)
3209 * fixed bug 320: Shared to local slot value transfers in class
3210 redefinitions now happen corrently from superclasses as
3211 well. (reported by Bruno Haible)
3212 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3214 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3215 improper lists correctly. (reported by Bruno Haible)
3216 * fixed bug 313: source-transform for <fun-name> was erroneously
3217 applied to a call of a value of a variable with name <fun-name>.
3218 (reported by Antonio Menezes Leitao)
3219 * fixed bug 307: The obsolete instance protocol ensures that
3220 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3221 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3222 remove dead unknown-values globs from the middle of the stack.
3223 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3224 easier to resume long computations after using *BREAK-ON-SIGNALS*
3225 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3226 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3227 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3228 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3229 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3230 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3232 * fixed a (fairly theoretical) bug in string printing: if
3233 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3234 does not have array-element-type equal to the most general string
3236 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3237 function name. (thanks to Nikodemus Siivola)
3238 * fixed bug: compile-time format string checker failed on
3239 non-closed ~{. (reported by Thomas F Burdick)
3240 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3241 don't warn on legal loop code involving more than one aggregate
3242 boolean. (thanks to Nikodemus Siivola)
3243 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3244 in keyword position to MAKE-PACKAGE was not being reported as
3246 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3247 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3249 * fixed bugs 280 and 312: the checking for multiple definitions in a
3250 file is less likely to become confused by uses of inline
3252 * fixed bug: the #S reader macro performs the keyword coercion
3253 specified for slot names. (reported by Kalle Niemitalo)
3254 * fixed bug: lambda lists may contain symbols whose names start with
3255 & but are not lambda-list-keywords; their occurrence triggers a
3257 * fixed bug 321: define-method-combination argument lambda lists do
3258 not cause invalid code to be generated when &optional or &aux
3259 variables have default values. (reported by Bruno Haible)
3260 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3261 have CLOS classes; this appears also to have fixed reported
3262 instability in stack exhaustion detection.
3263 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3264 MUFFLE-WARNING when no associated restart is present is now
3266 * optimization: rearranged the expansion of various defining macros
3267 so that each expands into only one top-level form in a
3268 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3270 * optimization: used a previously little-used slot in symbols to
3271 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3273 * fixed some bugs revealed by Paul Dietz' test suite:
3274 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3276 ** Fixed an optimization bug related to inheritance of initforms
3277 from local to shared slots.
3278 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3279 ** CAST optimizer forgot to flush argument derived type.
3280 ** print/read consistency on floats is now orders of magnitude
3281 more likely. (thanks also to Bruno Haible for a similar report
3283 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3284 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3285 for objects of type REAL. Make it so.
3286 ** SXHASH is specified (infelicitously) to respect similarity,
3287 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3288 it so. (thanks to Markus Ziegler)
3289 ** on the Alpha, the compiler succeeds in compiling functions
3290 returning a known number of arguments greater than 63.
3291 ** fixed handling of invalid NIL arguments in keyword position
3293 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3295 ** provided a readably-printable representation for RANDOM-STATE
3297 ** ensured that pathnames, where they have a namestring, always
3298 print using #P"..." syntax.
3300 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3301 * Support for the forthcoming 2.0 version of the NetBSD kernel
3302 running on x86 hardware has been added. (thanks to Perry
3303 E. Metzger most immediately, and others for their past work)
3304 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3305 current release version; SBCL's OpenBSD support had been broken
3306 since about the time of OpenBSD's switch to ELF binary format.)
3307 * [placeholder for DX summary]
3308 ** user code with &REST lists declared dynamic-extent, under high
3309 speed or space and low safety and debug optimization policy.
3310 * The manual has been converted to Texinfo format and the debugger
3311 chapter from the cmucl manual has been added.
3312 * A facility has been added to extract documentation strings from
3313 sbcl and store them as Texinfo-formatted snippets for inclusion in
3314 the manual (via Texinfo's @include directive)
3315 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3316 the test case to Dave Roberts)
3317 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3318 pointers. (reported by Sean Ross)
3319 * bug fix: PROFILE output is printed nicely even for large numerical
3320 values. (thanks to Zach Beane)
3321 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3322 greater than 32 handle EOF correctly.
3323 * bug fix: on X86 an immediate argument of the IMUL instruction is
3324 correctly printed in disassembly. (thanks to Lutz Euler)
3325 * bug fix: class slots in redefined classes preserve their old
3326 values. (thanks to Bruno Haible and Nikodemus Siivola)
3327 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3328 succeeds. (reported by Marco Baringer)
3329 * fixed some bugs revealed by Paul Dietz' test suite:
3330 ** READ-SEQUENCE now works on ECHO-STREAMs.
3331 ** RATIONALIZE works more according to its specification. (thanks
3334 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3335 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3336 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3337 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3338 should matter to you only if you rebind the printer control
3339 variables and then find you want different bindings in the
3340 debugger than in the ordinary execution of your program.)
3341 * The runtime build system has been tweaked to support building
3342 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3343 assembler and linker. (thanks to Nikodemus Siivola)
3344 * Unbound, undefined, undeclared variables now trigger full
3345 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3346 more often programmer error than deliberate exploitation of undefined
3348 * optimization: the hash algorithm for strings has changed to one
3349 that is less vulnerable to spurious collisions. (thanks to Juho
3351 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3352 needless bounds checking. (thanks to Juho Snellman)
3353 * optimization: implemented multiplication as a modular
3354 (UNSIGNED-BYTE 32) operation on the PPC backend.
3355 * fixed some bugs revealed by Paul Dietz' test suite:
3356 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3358 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3359 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3360 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3362 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3364 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3366 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3367 their output stream on EOF from read.
3368 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3369 have been read to end-of-file.
3370 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3372 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3373 description of determination of which consecutive characters
3375 ** Printing the "Space" character with escaping on now yields "#\\ ",
3376 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3377 ** Reading floating-point numbers with *READ-BASE* set to a number
3378 less than 10 works correctly.
3379 ** Reading floating-point numbers with *READ-BASE* set to a number
3380 more than 10 works correctly.
3381 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3382 the readtable currently in effect.
3384 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3385 * minor incompatible change: parsing of namestrings on a physical
3386 (Unix) host has changed; numbers after the final #\. in a
3387 namestring are no longer interpreted as a version field. This is
3388 intented to be largely invisible to the user, except that the
3389 meaning of the namestring "*.*.*" has changed: it now refers to a
3390 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3391 should usually be replaced by
3392 (make-pathname :name :wild :type :wild :version :wild)
3393 with the added benefit that this is more likely to be portable.
3394 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3395 option to OPEN now signals an error if the file being opened
3396 exists; this may have an impact on existing code.
3397 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3398 signals received, on the PowerPC platforms (both Linux and
3399 Darwin). (thanks to Pierre Mai for pointing out the location of
3401 * several fixes on OS X: The system now builds and runs cleanly on
3402 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3403 (thanks to Brian Mastenbrook)
3404 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3405 second-resolution: integer multiples of 1/3600 between -24 and 24.
3406 (thanks to Vincent Arkesteijn)
3407 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3408 type when called with 1 argument; PEEK-CHAR checked type of
3409 PEEK-TYPE only after having read first character from a
3410 stream. (reported by Peter Graves)
3411 * bug fix: the garbage collector now has much better locality
3412 behaviour, and in particular no longer treats all memory as being
3413 exhausted when many small objects point to each other in a deeply
3415 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3416 recognized as being TYPEP their class.
3417 * bug fix: the PUSHNEW documentation string has been corrected.
3418 (thanks to Vincent Arkesteijn)
3419 * bug fix: defaulting of the value for the last of an atypically
3420 large number of multiple values being bound was not being
3421 performed correctly on the Alpha or PPC platforms
3422 * optimization: implemented multiplication as a modular
3423 (UNSIGNED-BYTE 32) operation on the x86 backend.
3424 * optimization: SEARCH on simple-base-strings can now be open-coded.
3425 (see also contrib/compiler-extras.lisp for inspiration for
3426 teaching the compiler about the Boyer-Moore algorithm).
3427 * value, returned by MAX (and MIN) called with several EQUALP, but
3428 not EQL, arguments now does not depend on compiler settings.
3429 * fixed some bugs revealed by Paul Dietz' test suite:
3430 ** in stack analysis liveness information is propagated from
3431 non-local entry points.
3432 ** pathwise CAST removing failed when the CAST node did not start
3434 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3435 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3437 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3438 host is already defined.
3439 ** RENAME-FILE works on streams instead of signalling an internal
3441 ** PEEK-CHAR uses the current readtable when determining whether
3442 or not a character is whitespace.
3443 ** MERGE-PATHNAMES handles the case when the pathname does not
3444 specify a name while the default-pathname specifies a version.
3445 ** Pathnames now stand a better chance of respecting print/read
3447 ** Attempting to use standardized file system operators with a
3448 pathname with invalid :DIRECTORY components signals a
3450 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3452 ** DIRECTORY on logical pathnames is more correct.
3453 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3454 signal a TYPE-ERROR if their argument is not a stream.
3455 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3456 designator argument does not designate a stream.
3457 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3458 examining the synonym.
3459 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3461 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3462 element-type larger than ([UN]SIGNED-BYTE 32).
3464 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3465 * When built with the :SB-FUTEX feature, threaded builds now take
3466 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3467 for faster/more reliable mutex and condition variable support.
3468 * Incompatible change (but one you probably shouldn't have been using
3469 anyway): the interface and code for arbitrating between multiple
3470 threads in the same user session has been redesigned.
3471 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3472 error when called without an explicit environment argument.
3473 (thanks to Nikodemus Siivola)
3474 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3475 confused about their position. (thanks to Adam Warner and Gerd
3477 * bug fix: Pretty printing backquoted forms with unquotations in the
3478 argument list position of various code constructs such as LAMBDA
3479 now works correctly. (reported by Paul Dietz)
3480 * bug fix: Pretty printing unquotations no longer loses all
3481 stream position information.
3482 * optimization: performance of string output streams is now less
3483 poor for multiple small sequence writes.
3484 * optimization: performance of CSUBTYPEP in the presence of complex
3485 expressions involving CONS and NOT many times has been improved.
3486 (reported by Paul Dietz)
3487 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3489 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3490 streams for the REPL, for the debugger, and so on. (thanks to
3492 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3493 * fixed some bugs revealed by Paul Dietz' test suite:
3494 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3495 is ignored if it is too small, rather than propagating through
3496 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3497 ** extremely complex negations of CONS types were not being
3498 sufficiently canonicalized, leading to inconsistencies in
3500 ** VALUES tranformer lost derived type.
3502 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3503 * fixed a bootstrapping bug: the build process no longer assumes
3504 that the various BOOLE-related constants have the same value in
3505 host and target lisps. (noted by Paul Dietz' test suite on an
3506 SBCL binary built from CLISP)
3507 * The system can now be dynamically linked on the MIPS platform,
3508 which enables dynamic loading of foreign code from Lisp. (thanks
3509 to Ralf Baechle for discussions on the MIPS ABI)
3510 * The system now records debugging information for its own source
3511 files in a filesystem-position-independent manner, relative to
3512 the "SYS" logical host.
3513 * fixed a compiler bug: MV-LET convertion did not check references
3514 to the "max args" entry point. (reported by Brian Downing)
3515 * tweaked disassembly notes to be less confident about proclaiming
3516 some instruction as an LRA. (thanks to Brian Downing)
3517 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3518 now each have their own history, command character, and other
3519 characteristics. (thanks to David Lichteblau)
3520 * fixed some bugs revealed by Paul Dietz' test suite:
3521 ** compiler failure in compiling LOGAND expressions including a
3523 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3524 shift greater than 32.
3525 ** FLUSH-DEST did not mark blocks for type check regeneration.
3526 ** HANDLER-CASE failed to accept declarations in handler clauses
3527 in some circumstances.
3529 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3530 * New code in contrib/sb-introspect (still probably not entirely
3531 stable yet) provides some support for smart Lisp development
3532 environments like SLIME.
3533 * The conditions signalled for errors occurring when loading .fasl
3534 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3535 in a way which should help ASDF recover gracefully.
3536 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3537 stuff has been cleaned up. If you code contrib/ stuff, this might
3538 affect you, and you can look at contrib/README, contrib/STANDARDS,
3539 and/or the 0.8.4.27 diff to check.
3540 * In full calls the compiler now does not generate checks for declared
3541 argument types for all arguments.
3542 * various threading fixes
3543 ** and some experimental patches which didn't make it into
3544 the main tree for this release, but which are shipped in
3545 contrib/experimental-thread.patch as a possible fix for some
3546 failures (deadlock, spinning...) in GC-intensive multithreaded
3548 * fixed PPC build problem (source code incompatibility of different
3549 library versions): added offsetof() hackery which attempts to divine
3550 where glibc maintainers put uc_mcontext today
3551 * fixed bug 282: compiler does not trust type assertions while passing
3552 arguments to a full call.
3553 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3554 &OPTIONAL VALUES type parameter.
3555 * fix bug 214: algorithm for noting rejected templates is now more
3556 similar to that of template seletion. (also reported by rydis on
3558 * fixed bug 141b: printing backquoted information readably and prettily
3559 inserts a space where necessary.
3560 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3561 (CHARACTER 10) are now reported as errors, rather than propagated
3562 as unknown types. (reported by piso on #lisp)
3563 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3564 with values NIL and :ERROR. (thanks to Milan Zamazal)
3565 * fixed bug 191c: CLOS now does proper keyword argument checking as
3566 described in CLHS 7.6.5 and 7.6.5.1.
3567 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3568 longer raise an error; further, using a list as a for-as-arithmetic
3569 counter now raises a meaningful error.
3570 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3571 now understood by sequence creation functions such as MAKE-SEQUENCE
3573 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3574 a STRING-INPUT-STREAM.
3575 * compiler enhancement: SIGNUM is now better able to derive the type
3577 * type declarations inside WITH-SLOTS are checked. (reported by
3579 * fixed some bugs revealed by Paul Dietz' test suite:
3580 ** incorrect optimization of TRUNCATE for a positive first
3581 argument and negative second.
3582 ** compiler failure in let-convertion during flushing dead code.
3583 ** compiler failure while deriving type of TRUNCATE on an
3584 interval, containing 0.
3585 ** ASH of a negative bignum by a negative bignum count now returns
3587 ** intersection of CONS types now canonicalizes properly, fixing
3588 inconsistencies in SUBTYPEP.
3590 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3591 * incompatible change: The --disable-debugger command line
3592 option now clobbers the debugger at a more fundamental
3593 level, by redefining #'INVOKE-DEBUGGER instead of by
3594 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3595 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3596 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3597 enter the debugger REPL and then suffer recursive errors
3598 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3599 while under the new system, BREAK in --disable-debugger mode
3600 terminates the system just as an unhandled error would.
3601 * fixed compiler performance when processing loops with a step >1;
3602 * bug fix: DOCUMENTATION now retrieves generic function
3603 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3604 support has been systematized, and now supports the methods
3605 specified by ANSI, along with a default method and a method for
3606 slot documentation. (reported by Nathan Froyd)
3607 * bug fix: effective methods associated with a generic function are
3608 no longer cached over a change of that generic function's method
3609 combination. (reported by Andreas Fuchs)
3610 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3611 names a non-existent directory. (thanks to Andreas Fuchs)
3612 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3613 the PPC platform, lead to stack corruption; this has been fixed.
3614 (reported by Rainer Joswig)
3615 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3616 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3617 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3618 arithmetic in general, is now much more reliable on the PPC
3620 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3621 platform now returns the right answer.
3622 * optimization: restored some effective method precomputation in
3623 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3624 precomputation is now tunable.
3625 * optimization: compiler-internal data structure use has been
3626 reviewed, and changes have been made that should improve the
3627 performance of the compiler by about 20%.
3628 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3629 simple-base-strings and simple-bit-vectors is improved.
3630 * optimization: the optimization of 32-bit logical and arithmetic
3631 functions introduced in version 0.8.3 on the x86 has been
3632 implemented on the mips, ppc and sparc platforms; an
3633 implementation of the same facility, but for 64-bit arithmetic,
3634 has been added for the alpha.
3635 * microoptimization: the compiler is better able to make use of the
3636 x86 LEA instruction for multiplication by constants.
3637 * bug fix: in some situations compiler did not report usage of
3638 generic arithmetic in (SPEED 3) policy.
3639 * bug 145b fix: compiler used wrong type specifier while converting
3640 MEMBER-types to numeric.
3641 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3643 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3644 index argument now works properly on the Alpha platform.
3645 * bug fix: floating point exception treatment on the Alpha platform
3647 * bug fix: FILE-POSITION works much better on string input and
3648 output streams. (thanks to Nikodemus Siivola)
3649 * bug fix: many threading/garbage collection symptoms sorted.
3650 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3651 might be pseudo-atomic.
3652 * internal change: Stopping for GC is now done with signals not
3653 ptrace. GC is now done in whichever thread wanted it, instead of
3655 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3657 * bug fix: result form in DO is not contained in the implicit
3659 * incompatible change: ICR structure is changed; the value part of
3660 CONTINUATION is now called LVAR; corresponding functions are
3661 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3662 * added type deriver for ISQRT (thanks to Robert E. Brown).
3663 * bug fix: better support for loading from the command line when an
3664 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3666 * fixed some bugs revealed by Paul Dietz' test suite:
3667 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3668 ** ROUND and FROUND now give the right answer when given very
3669 small float arguments.
3670 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3672 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3673 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3674 ** LCM should return a non-negative integer.
3675 ** PARSE-INTEGER returned the index of a terminator instead of the
3676 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3677 ** PARSE-INTEGER returned an incorrect index being applied to a
3679 ** LCM with two arguments of 0 returns 0 rather than signalling
3681 ** unsigned addition of a 32-bit constant with the high bit set no
3682 longer causes an internal compiler error on the x86.
3683 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3684 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3685 with negative last argument.
3686 ** byte specifiers with zero size and position no longer cause
3687 an error during type derivation.
3688 ** bignum multiplication on the Alpha platform now returns the
3690 * porting: The system now builds on SuSE AMD64, although it still
3691 generates a 32-bit binary.
3692 * .fasl file incompatibility: The fasl file version number has
3693 been incremented (because of the changes to internal compiler
3694 data structures referred to above).
3696 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3697 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3698 more accurately, on the Darwin kernel running on PowerPC hardware.
3699 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3700 * Compiler code deletion notes now signal a condition of type
3701 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3702 an associated MUFFLE-WARNING restart.
3703 * The compiler now performs limited argument count validation of
3704 constant format strings in FORMAT, and where appropriate in ERROR,
3705 CERROR and WARN. (thanks to Gerd Moellmann)
3706 * New ASDF-INSTALL contrib can be used for automatic download and
3707 installation of third-party Lisp code from CCLAN or other sites
3709 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3710 which forces another thread to execute a function supplied by the
3712 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3713 now accept and act upon their :ELEMENT-TYPE keyword argument.
3714 (reported by Martin Atzmueller, Edi Weitz)
3715 * bug fix: FILE-POSITION now accepts position designators up to
3716 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3717 is the greater. (thanks to Patrik Nordebo)
3718 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3719 Kalle Olavi Niemitalo)
3720 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3721 printable. (reported by Eric Marsden)
3722 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3723 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3724 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3725 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3726 (thanks to Stig Sandoe)
3727 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3728 UNREAD-CHAR now correctly includes the unread character in the
3729 target sequence. (thanks to Gerd Moellmann)
3730 * bug fix in threaded builds: the system can now be suspended and
3731 resumed by shell job control with minimal disruption.
3732 * bug fixes in times and timezones >2038AD
3733 * better handling of "where is GNU make?" problem in build scripts
3734 (thanks to Nikodemus Siivola)
3735 * new optimization: inside a named function any reference to a
3736 function with the same name is considered to be a self-reference;
3737 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3738 optimization quality.
3739 * new optimization on x86: logical functions and + now have
3740 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3741 used when the result is truncated to 32 bits.
3742 * VALUES declaration is partially enabled.
3743 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3744 * fixed some bugs revealed by Paul Dietz' test suite:
3745 ** The system now obeys the constraint imposed by
3746 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3747 types form a lattice under type intersection.
3748 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3749 ** ASSOC now ignores NIL elements in an alist.
3750 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3751 and (1+ MOST-POSITIVE-FIXNUM) answers.
3752 ** The addition of a method with invalid qualifiers to a generic
3753 function does not cause an error to be signalled immediately;
3754 a warning is signalled, and the error is generated only on
3755 calling the generic function.
3756 * changed .fasl file version number, in part to add type codes for
3757 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3758 obscure ANSI requirements
3760 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3761 * fixed bug 148: failure to inline-expand a local function left
3762 garbage, confusing the compiler.
3763 * fixed bugs 3cd: structure slot readers perform type check if the
3764 slot can have an invalid value (i.e. it is either not initialized
3765 or can be written with a less specific slot writer).
3766 * bug fix: the compiler now traps array references to elements off
3767 the end of an array; previously, the bounds checking in some
3768 circumstances could go off-by-one.
3769 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3771 * type declarations for array element types now obey the description
3772 on the CLHS page "Declaration TYPE", as per discussions on
3773 sbcl-help around 2003-05-08. This means that a declaration
3774 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3775 declaration, all references to BAR will be asserted or assumed
3776 (with THE, so dependent on compiler policy) to involve objects of
3777 type FOO. Note that no such declaration is implied in
3778 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3779 * declared types of functions from the "Conditions"
3780 chapter. (reported by Paul Dietz)
3781 * bug fix: CERROR accepts a function as its first argument.
3782 * bug fix: NTH an NTHCDR accept a bignum as index
3783 arguments. (reported by Adam Warner)
3784 * optimization: character compare routines now optimize comparing
3785 against a constant character. (reported by Gilbert Baumann)
3786 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3787 argument now works properly on the MIPS platform.
3788 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3789 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3790 declared to have a functional type, does not cause an error
3792 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3793 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3794 * fixed bug: if last continuation of a deleted block has a
3795 destination, this destination should be deleted too. (reported by
3797 * fixed a bug in the bootstrap process: the host compiler's values
3798 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3799 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3800 test case from Patrik Nordebo)
3801 * improved the ability of the disassembler on the PPC platform to
3802 provide helpful disassembly notes.
3803 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3804 the class in more cases than previously.
3805 * bug fix: FILE-POSITION now understands :START and :END for
3806 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3807 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3808 8) data. (thanks to David Lichteblau)
3809 * bug fix: it is possible to add a method to a generic function
3810 without lambda list.
3811 * bug fix: reader failed to signal END-OF-FILE inside an
3812 object representation. (reported by Nikodemus Siivola)
3813 * fixed some bugs revealed by Paul Dietz' test suite:
3814 ** LAST and [N]BUTLAST should accept a bignum.
3815 ** condition slot accessors are methods.
3816 ** (VECTOR NIL) is a subtype of STRING.
3818 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3819 * minor incompatible change: some nonsensical specialized lambda
3820 lists (used in DEFMETHOD) which were previously ignored now signal
3822 * minor incompatible change: the system is now aware of the types of
3823 variables in the COMMON-LISP package, and will signal errors for
3824 most violations of these type constraints (where previously they
3825 were silently accepted).
3826 * minor incompatible change: COMPILE-FILE now uses the freedom
3827 afforded (ANSI 3.2.2.3) to use derived function types for
3828 functions defined in the same file. This also permits the system
3829 to warn on static type mismatches and function
3830 redefinition. (Currently it does not work with high DEBUG level.)
3831 * minor incompatible change: VALUES declaration is disabled.
3832 * When issuing notes, the compiler now signals a condition of type
3833 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3834 restart for use in user handlers. It is expected that the
3835 COMPILER-NOTE condition will eventually become a condition
3836 supertype to a hierarchy of note types, which will then be
3837 handleable in a similar fashion. However, at the moment, no such
3838 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3839 but it's an implementation detail, not a classification for the
3841 * Changes in type checking closed the following bugs:
3842 ** type checking of unused values (192b, 194d, 203);
3843 ** template selection based on unsafe type assertions (192c, 236);
3844 ** type checking in branches (194bc).
3845 * A short form of VALUES type specifier has ANSI meaning (it has
3846 increased the number of situations when SBCL cannot perform type
3848 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3849 keywords or constants is permissible.
3850 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3851 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3852 classes. (thanks to Antonio Martinez)
3853 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3854 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3855 argument to a pretty-print stream. Instead, it leaves any such
3856 operations to DESCRIBE-OBJECT methods.
3857 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3859 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3860 lambda lists. (thanks to David Lichteblau)
3861 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3862 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3863 (thanks to Gerd Moellmann)
3864 * fixed bug 246: increased compilation speed of long
3865 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3867 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3869 * DEFCONSTANT now throws a condition of type
3870 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3871 constant to a non-EQL value; CONTINUE and ABORT restarts
3872 respectively change and preserve the value.
3873 * fixed bug 63: The code walker, part of the implementation of CLOS,
3874 is now better at handling symbol macros.
3875 * bug fix: There is no longer an internal implementation type named
3876 CL:LENGTH. (reported by Raymond Toy)
3877 * bug fix: In macro-like defining macros/special operators the
3878 implicit block does not enclose the lambda list.
3879 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3880 enclosed in parentheses) are not suitable as type specifiers, and
3881 their use properly signals an error now.
3882 * bug fix: An argument count mismatch for a type specifier in code
3883 being compiled no longer causes an unhandled error at compile
3884 time, but signals a compile-time warning.
3885 * fixed simple vector readable printing
3886 * bug fix: DESCRIBE takes more care over whether the class
3887 precedence list slot of a class is bound before accessing it.
3888 (reported by Markus Krummenacker)
3889 * bug fix: FORMATTER can successfully compile pretty-printer format
3890 strings which use variants of the ~* directive inside.
3891 * bug fix: SEARCH now applies its TEST predicate to the elements of
3892 the arguments in the correct order. (thanks to Wolfhard Buss)
3893 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3894 in type inference. (thanks to Robert E. Brown)
3895 * bug fix: Reading in symbols with an explicit package name of ""
3896 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3897 * fixed some bugs revealed by Paul Dietz' test suite:
3898 ** NIL is now allowed as a structure slot name.
3899 ** Arbitrary numbers, not just REALs, are allowed in certain
3900 circumstances in LOOP for-as-arithmetic clauses.
3901 ** Multiple class redefinitions before slot access no longer
3902 causes a type error.
3903 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3904 association between the name and a class.
3905 ** Generic functions with non-standard method-combination and over
3906 five methods all of which return constants no longer return NIL
3907 after the first few invocations. (thanks to Gerd Moellmann)
3908 ** CALL-NEXT-METHOD with no arguments now passes the original
3909 values of the arguments, even in the presence of assignment.
3910 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3912 ** DISASSEMBLE works with closures and funcallable instances.
3913 ** ADD-METHOD now returns the generic function, not the new method.
3914 ** FIND-METHOD signals an error if the lengths of the specializers
3915 is incompatible with the generic function, even if the ERRORP
3917 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3918 which its argument is a member.
3919 ** DEFCLASS only redefines the class named by its class-name
3920 argument if that name is the proper name of the class;
3921 otherwise, it creates a new class.
3922 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3923 of the UNBOUND-SLOT condition to the name of the slot.
3924 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3925 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3926 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3927 SLOT-MAKUNBOUND in the specified fashion.
3929 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3930 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3931 cross-compilation host. As a consequence, we can now bootstrap our
3932 way up to SBCL starting with a bare gcc toolchain and human-readable
3933 source code (first the source to CLISP, then the source to SBCL).
3934 * A contributed module containing a partial implementation of the
3935 simple-streams interface has been included. (thanks to Rudi
3937 * A contributed module implementing the RFC1321 Message Digest
3938 Algorithm, known as MD5, has been included.
3939 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3940 no longer has any effect, as the code controlled by this feature
3941 has been deleted. (As far as we know, no-one has ever built using
3942 this feature, and its semantics were confused in any case).
3943 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3944 work on conditions (as required by the ANSI specification),
3945 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3946 expected behaviour on conditions. Users should note, however,
3947 that such behaviour is not required by the ANSI specification,
3948 and so use of this behaviour may render their code unportable.
3949 * fixed some bugs revealed by Paul Dietz' test suite:
3950 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3952 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3953 ** SXHASH on condition objects no longer returns NIL.
3954 ** :ALLOCATION :CLASS slots are better treated; their values are
3955 updated on class redefinition, and initforms inherited from
3956 superclasses are applied.
3957 ** REMOVE-METHOD returns its generic function argument even when
3958 no method was removed.
3959 ** SHARED-INITIALIZE now initializes the values of the requested
3960 slots, including those with :ALLOCATION :CLASS.
3961 ** ALLOCATE-INSTANCE now works on structure classes defined via
3962 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3964 ** SLOT-EXISTS-P now works on conditions, as well as structures
3966 ** MAKE-LOAD-FORM now has the required methods on
3967 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3968 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3969 keyword, and now implements the SLOT-NAMES argument.
3970 ** methods with &OPTIONAL arguments no longer allow too many
3971 arguments to be passed in the call without error.
3972 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3973 option is consistent with the required arguments of the generic
3974 function lambda list.
3975 * bug fix: REQUIRE accepts a string designator. (Thanks to
3977 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3978 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3979 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3980 * bug fix: The compiler now checks for duplicated variables in macro
3982 * bug fix: SETQ on globals returns the correct value.
3983 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3984 not a COMPILER-ERROR (followed by some other strange error on
3985 choosing the CONTINUE restart).
3986 * bug fix: make.sh and friends are now more consistent in the way that
3987 they look for GNU "make".
3989 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3990 * experimental native threads support (on x86 Linux >=2.4 only).
3991 This is not compiled in by default: you need to add :SB-THREAD to
3992 the target features. See the "Beyond ANSI" chapter of the manual
3994 * fix for longstanding nonANSIism: The old distinction between
3995 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3996 The return value from CL:FIND-CLASS is now a CLOS class, and
3997 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3998 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3999 * An interface to the MetaObject Protocol, as described in Kiczales,
4000 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4001 MIT Press, 1991, is available from the SB-MOP package.
4002 * incompatible change: the SB-PCL package should now be considered
4003 a private implementation detail, and no longer a semi-private MOP
4005 * minor incompatible change: due to rearrangement for threads, the
4006 control stack and binding stack are now allocated at arbitrary
4007 addresses instead of being hardcoded per-port. Users affected by
4008 this probably have to be doing advanced things with shared
4009 libraries, and will know who they are.
4010 * minor incompatible change: Previously, all --eval forms used were
4011 processed with READ before any of them were processed with EVAL.
4012 Now each --eval form is processed with both READ and EVAL before
4013 the next --eval form is processed. (Thus package operations like
4014 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4015 work as the user might reasonably expect.)
4016 * minor incompatible change: *STANDARD-INPUT* is now only an
4017 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4019 * minor incompatible change: Y-OR-N-P is now character-oriented,
4020 not line oriented. Also, YES-OR-NO-P now works without errors.
4021 (thanks to Antonio Martinez)
4022 * sb-aclrepl module improvements: an integrated inspector, added
4023 repl features, and a bug fix to :trace command.
4024 * Known functions, which cannot be open coded by the backend, are
4025 considered to be able to check types of their arguments. (fixing
4026 a bug report by Nathan J. Froyd)
4027 * fixed a bug in computing method discriminating functions: It is
4028 now possible to define methods specialized on classes which have
4029 forward-referenced superclasses. (thanks to Gerd Moellmann)
4030 * fixed evaluation order in optional entries (reported by Gilbert
4032 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4033 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4034 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4035 required-by-AMOP NAME argument, as well as CLASS and
4036 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4037 * fixed bug 20: DEFMETHOD can define methods using names that are
4038 not the proper names of classes to designate class specializers.
4039 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4040 Unix file descriptors, instead of blowing up. (thanks to Antonio
4042 * Garbage collection refactoring: user-visible change is that a
4043 call to the GC function during WITHOUT-GCING will not do garbage
4044 collection until the end of the WITHOUT-GCING. If you were doing
4045 this you were probably losing anyway.
4046 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4047 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4048 TYPEP the latter but not the former.
4049 * The compiler issues a full WARNING for calls to undefined functions
4050 with names from the CL package.
4051 * MAP-INTO for a vector destination is open coded. (reported by
4052 Brian Downing on c.l.l)
4053 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4054 documentation string.
4055 * fixed some bugs revealed by Paul Dietz' test suite:
4056 ** COPY-ALIST now signals an error if its argument is a dotted
4058 ** Condition slots are now accessed more correctly in the presence
4059 of multiple initargs for a given slot.
4060 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4061 exclude restarts of the same name associated with a different
4063 ** DEFCLASS of forward-referenced classes with another
4064 forward-referenced class in the superclasses list no longer
4066 ** Condition slots are now initialized once each, not multiple
4067 times. (thanks to Gerd Moellmann)
4068 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4070 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4071 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4072 arguments contain duplicated elements.
4073 ** RESTART-CASE understands local macros.
4074 ** RESTART-CASE associates exactly its own restarts with a condition.
4075 ** ENDP in safe mode checks its argument to be of type LIST.
4076 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4077 in question is unbound.
4078 ** Optimized MAKE-INSTANCE functions no longer cause internal
4079 assertion failures in the presence of duplicate initargs.
4080 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4081 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4082 propagated even in the ctor optimized implementation of
4084 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4086 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4087 * a better implementation of SXHASH on (simple) bit vectors,
4088 measured both in execution speed and in distribution of results
4089 over the positive fixnums, has been installed. Likewise, a better
4090 implementation of EQUAL for simple bit vectors is now available.
4091 * fixed CEILING optimization for a divisor of form 2^k.
4092 * fixed bug 240 (emitting extra style warnings "using the lexical
4093 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4094 by Antonio Martinez)
4095 * fixed SXHASH, giving different results for NIL depending on type
4096 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4097 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4098 variable. (found by Rolf Wester)
4099 * SBCL does not ignore type declarations for special
4100 variables. (reported by rif on c.l.l 2003-03-05)
4101 * some bug fixes in contrib/sb-aclrepl/
4102 * fixed some bugs revealed by Paul Dietz' test suite:
4103 ** a bug in the CONS type specifier, whereby the CAR and CDR
4104 types got intertwined, has been fixed;
4105 ** the type system is now able to reason about the interaction
4106 between INTEGER and RATIO types more completely;
4107 ** APPEND, [N]REVERSE and NRECONC check that those their
4108 arguments, which must be proper lists, are really so;
4109 ** An array specialized to be unable to hold elements has been
4110 implemented, as required -- yes, really -- by ANSI;
4111 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4112 on malformed property lists;
4114 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4115 * incompatible packaging change: in line with Unix convention,
4116 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4117 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4118 * REQUIRE and PROVIDE are now optionally capable of doing something
4119 useful. See the documentation string for REQUIRE.
4120 * infrastructure for a managed SBCL contrib system: contributed
4121 modules in this release include:
4122 ** the ASDF system definition facility;
4123 ** an interface to the BSD Sockets API;
4124 ** an ACL-like convenience interface to the repl;
4125 (thanks to Kevin Rosenberg)
4126 ** an implementation of ROTATE-BYTE, with efficient implementation
4128 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4129 gives a closer approximation to the right answer than previously.
4130 (thanks to Raymond Toy)
4131 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4132 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4133 optional environment arguments, as required by ANSI.
4134 * fixed bugs in other functions taking environment objects, allowing
4135 calls with an explicit NIL environment argument to be compiled
4137 * fixed bug 228: primary return values from
4138 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4139 COMPILE or FUNCTION.
4140 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4141 :TYPE will no longer signal errors on innocuous objects.
4142 * fixed bug 231b: SETQ is better at respecting type declarations in
4143 the lexical environment.
4144 * fixed a bug in DEFCLASS: classes named by symbols with no or
4145 unprintable packages can now be defined.
4146 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4147 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4148 * fixed compiler failure related to checking types of functions.
4149 (reported by Robert E. Brown)
4150 * the compiler is now much more consistent in its error-checking
4151 treatment of bounding index arguments to sequence functions: in
4152 (SAFETY 3) code, errors will be signalled in almost all cases if
4153 invalid sequence bounding indices are passed to functions defined
4154 by ANSI to operate on sequences.
4155 * fixed a bug in the build procedure: documentation of SBCL-specific
4156 packages is now preserved and available in the final Lisp image.
4157 * lifted FDEFINITION lookup out of loops in the implementation of
4158 many list operations. (thanks to Robert E. Brown)
4159 * fixed a bug in the reader: the #n# reader macro now works for
4160 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4161 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4162 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4163 E. Brown and Tony Martinez respectively)
4164 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4165 SLOT-BOUNDP: in particular, it is now able to optimize them much
4166 better, and is now not vulnerable to having packages renamed.
4167 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4168 always called when a slot is not present in an instance. (thanks
4170 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4171 longer signal an error on unreading a character following EOF on
4172 the previous constituent stream. (thanks to Tony Martinez)
4173 * fixed some bugs revealed by Paul Dietz' test suite:
4174 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4175 not just nonnegative fixnums;
4176 ** the logical bit-array operators such as BIT-AND now accept an
4177 explicit NIL for their "opt-arg" argument (to indicate a
4178 freshly-consed result bit-array);
4179 ** ELT now signals an error on an invalid sequence index in safe
4181 ** the type system is now cleverer about negations of numeric
4182 types, and consequently understands the BIGNUM and RATIO types
4184 ** the type system is now cleverer about the interaction between
4185 INTEGER and RATIO types: while bugs still remain, many more
4186 cases are accurately computed;
4187 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4188 if it is in the last clause;
4189 ** CONSTANTLY now correctly returns a side-effect-free function in
4191 ** DECLARE is no longer treated as a special-operator; in
4192 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4193 * incremented fasl file version number due to the change in the
4194 DEFSTRUCT-SLOT-DESCRIPTION structure.
4196 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4197 * minor incompatible change: code processed by the "interpreter" or
4198 EVAL now has a compilation optimization policy of (DEBUG 2)
4199 (changed from (DEBUG 1)) to improve debuggability of interactive
4200 development, and to allow the use of the debug RETURN command in
4202 * an experimental implementation of the RETURN command for the
4203 debugger has been included. (thanks to Frederik Kuivinen)
4204 * fixed bug 62: constraints were not propagated into a loop.
4205 * fixed bug in embedded calls of SORT (reported and investigated by
4207 * fixed some bugs revealed by Paul Dietz' test suite:
4208 ** printing and reading of arrays with some dimensions having
4209 length 0 (thanks to Gerd Moellmann);
4210 ** BOA constructor with &AUX argument without a default value does
4211 not cause a type error;
4212 ** CONSTANTP now returns true for all self-evaluating objects.
4214 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4215 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4216 accessors that are related by inheritance, as specified in the
4217 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4218 Valtteri Vuorikoski)
4219 * The compiler is now able to inline functions that were defined in
4220 a complex lexical environment (e.g. inside a MACROLET).
4221 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4223 * Support for the upcoming FreeBSD-5.0 release has been included.
4224 (thanks to Dag-Erling Smorgrav)
4225 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4226 effect when it is not in a toplevel context.
4227 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4228 stand a better chance of being correct. (thanks to Gerd
4230 * fixed bug in COERCE, which now signals an error on coercing a
4231 rational to a bounded real type which excludes the expected
4233 * The compiler is now able to derive types more accurately from the
4234 COERCE and COMPILE functions.
4235 * fixed bug 223: functional binding is considered to be constant
4236 only for symbols in the CL package.
4237 * fixed bug 231: SETQ did not check the type of a variable being set
4238 (reported by Robert E. Brown)
4239 * A new optimization for MAKE-INSTANCE has been included, fixing
4240 various bugs (including relating to :ALLOCATION :CLASS slots and
4241 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4243 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4244 ** As required by ANSI, LOOP now disallows anonymous collection
4245 clauses such as COLLECT I in conjunction with aggregate boolean
4246 clauses such as THEREIS (= I 1);
4247 ** LOOP now signals an error when any variable is reused in the
4248 same loop (including the potentially useful construct analogous
4249 to WITH A = 1 WITH A = (1+ A);
4250 ** IT is only a special loop symbol within the first clause of a
4251 conditional loop clause;
4252 ** LOOP with a typed iteration variable over a hashtable now
4253 signals a type error iff it should.
4254 * fixed some other bugs revealed by Paul Dietz' test suite:
4255 ** FILE-STREAM now names the class previously known as FD-STREAM;
4256 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4257 argument) no longer signals an error;
4258 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4259 of the slot symbol, rather than using the current package
4260 ((:CONC-NAME "") continues to intern the slot's name in the
4262 * incremented fasl file version number, because of the incompatible
4263 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4264 of the new implementation of DEFINE-COMPILER-MACRO.
4266 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4267 * Support for building SBCL for MIPS platforms running in
4268 little-endian mode has now been checked in, and basic
4269 functionality on said platforms verified.
4270 * minor incompatible change: PCL now records the pathname of a file
4271 in which methods and the like are defined, rather than its
4273 * minor incompatible change: TRUENAME now considers the truename of
4274 a file naming a directory to be the pathname with :DIRECTORY
4275 component indicating that directory.
4276 * minor incompatible change: a NAMED clause in the extended form of
4277 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4278 reason for the previous behaviour is unclear.
4279 * more systematization and improvement of CLOS and MOP conformance
4280 in PCL (thanks to Gerd Moellman and Pierre Mai):
4281 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4283 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4284 primary methods with no specializers;
4285 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4287 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4288 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4289 FORWARD-REFERENCED-CLASSes; error reporting on
4290 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4292 ** SXHASH on CLOS instances now uses a slot internal to the
4293 instance to return different numbers on distinct instances,
4294 while preserving the same return value through invocations of
4296 ** DEFMETHOD signals errors when methods with longer incongruent
4297 lambda lists are added to generic functions;
4298 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4299 CLASS, as specified in AMOP;
4300 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4301 on the order returned by the primary method for classes of
4302 class STANDARD-CLASS;
4303 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4304 * fixed some bugs shown by Paul Dietz' test suite:
4305 ** DOLIST puts its body in TAGBODY;
4306 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4308 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4309 value producing form;
4310 ** if more variables are given to PROGV than values, extra
4311 variables are bound and made to have no value;
4312 ** NSUBSTITUTE on list arguments gets the right answer with
4314 ** ELT signals an error of type TYPE-ERROR when the index argument
4315 is not a valid sequence index;
4316 ** LOOP signals (at macroexpansion time) an error of type
4317 PROGRAM-ERROR when duplicate variable names are found;
4318 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4319 ** FUNCALL of special-operators now cause an error of type
4321 ** PSETQ now works as required in the presence of side-effecting
4322 symbol-macro places;
4323 ** NCONC accepts any object as its last argument;
4324 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4326 ** loop-for-as-package does not require a package to be explicitely
4328 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4330 * fixed bug 166: compiler preserves "there is a way to go"
4331 invariant when deleting code.
4332 * fixed bug 172: macro lambda lists with required arguments after
4333 &REST arguments now cause an error to be signalled. (thanks to
4335 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4336 bug. (thanks to Matthew Danish)
4337 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4339 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4340 arguments are lexically rebound. (thanks to Gerd Moellmann and
4342 * fixed bug 194: error messages are now more informative when there
4343 is no primary method applicable in a call to a generic
4344 function. (thanks to Gerd Moellmann)
4345 * fixed bug in command line argument checking (thanks to Julian
4347 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4348 (thanks to Matthew Danish)
4349 * incremented fasl file version number, because of the
4350 SXHASH-related changes in the layout of CLOS data structures
4352 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4353 * minor incompatible change: The runtime (the Unix executable named
4354 "sbcl") is now much pickier about the .core files it will load.
4355 Essentially it now requires .core files to descend from the same
4356 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4357 as the runtime does. (The intent is to prevent the crashes which
4358 can occur, and which can even be reported as mysterious failures,
4359 when people patch the sources or change the build parameters
4360 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4361 sbcl and .core files.)
4362 * fixed bug: VALUES-LIST is no longer optimized away.
4363 * fixed bug 142: The FFI conversion of C string values to Lisp
4364 string values no longer conses excessively. (thanks to Nathan
4365 Froyd porting Raymond Toy's fix to CMU CL)
4366 * began to systematize and improve MOP conformance in PCL (thanks to
4367 Nathan Froyd, Gerd Moellman and Pierre Mai):
4368 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4370 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4371 ** FINALIZE-INHERITANCE is now called on class finalization;
4372 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4373 argument precedence order.
4374 * fixed bug 202: The compiler no longer fails on functions whose
4375 derived types contradict their declared type.
4376 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4377 so it can be non-toplevel.
4378 * The fasl file version number has changed (because of the new
4379 implementation of DEFMACRO).
4380 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4381 safe code, that any length requirement by their type-specifier
4382 argument is valid. The exceptions to this are described in bug
4384 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4385 functions now check the types of their inputs as required by ANSI.
4386 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4387 introduced symbol is DECLAREd to be SPECIAL.
4388 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4389 * fixed bug: :COUNT argument to sequence functions may be negative
4390 * fixed bug: body of DO-SYMBOLS may contain declarations
4391 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4392 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4393 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4394 symbol macro only once
4395 * fixed printing of call frame when argument list is unavailable
4396 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4397 * compiler no longer signals WARNING on unknown keyword
4400 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4401 * A beta-quality port to the mips architecture running Linux,
4402 based on the old CMUCL backend, has been made. It has been tested
4403 on a big-endian kernel, and works sufficiently well to be able to
4404 rebuild itself; it has not been tested in little-endian mode.
4405 * fixed an inconsistency between gencgc.c and purify.c which made
4406 dumping/loading .core files unreliable
4407 * fixed bug 120a: The compiler now deals correctly with IFs where
4408 the consequent is the same as the alternative, instead of
4409 misderiving the return type. (thanks to Alexey Dejneka)
4410 * fixed bug 113: Logical pathnames are now dumpable (the logical
4411 host is resolved at load-time, throwing an error if it is not
4413 * fixed bug 174: FORMAT's error message is slightly clearer when a
4414 non-printing character is used in a format directive.
4415 * fixed several bugs in compiler checking of type declarations, i.e.
4416 violations of the Python "declarations are assertions" principle
4417 (thanks to Alexey Dejneka)
4418 * fixed several bugs in PCL's error checking (thanks to Gerd
4420 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4422 * fixed bug in compilation of functions as first class values
4423 (thanks to Antonio Martinez-Shotton)
4424 * The compiler's handling TYPE-ERRORs which it can prove will
4425 inevitably happen at runtime has been cleaned up and corrected
4426 in several ways. (thanks to Alexey Dejneka)
4427 * improved argument type checking for various basic arithmetic
4428 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4429 lavished on them in the past that they can be compiled in many
4430 ways in different special cases
4431 * fixed bug 181: compiler checks validity of user supplied type
4433 * cleaned up code flushing in optimization: Function calls which
4434 should signal errors for safety purposes (e.g. which ANSI says
4435 should signal errors when their arguments are of incorrect type)
4436 are no longer optimized away.
4437 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4438 * incremented fasl file version number, because changes in the
4439 implementation of sequence functions like COERCE caused
4440 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4441 in old inline expansions) to become undefined. (Actually these
4442 changes were later undone, so we might very well be binary
4443 compatible with 0.7.7 after all, but leaving the version number
4444 incremented seemed like the simplest and most conservative
4447 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4448 * An alpha-quality port to the parisc architecture running Linux,
4449 based on the old CMUCL backend, has been made. This, even more so
4450 than the other backends, should be considered still a work in
4451 progress; known problems include that the Linux kernel in 64-bit
4452 mode does not propagate the correct sigcontext structure to
4453 userspace, and consequently SBCL on a parisc64 kernel will not
4455 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4456 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4457 suppressed.) Also now that the compiler is looking at declarations
4458 in the environment, it checks optimization declarations as well,
4459 and suppresses inlining when (> DEBUG SPEED).
4460 * More fixes have been made to treatment of floating point exception
4461 treatment and other Unix signals. In particular, floating point
4462 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4463 * The detection and handling of control stack exhaustion (infinite
4464 or very deeply nested recursion) has changed. Stack exhaustion
4465 detection is now done by write-protecting pages at the OS level
4466 and applies at all optimization settings; when found, a
4467 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4468 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4469 be caught using IGNORE-ERRORS.
4470 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4471 correctly when transforming recursive LABELS functions to LETs.
4472 (thanks to Alexey Dejneka)
4473 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4474 that are names of constants or global variables.
4475 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4476 alien routines with docstrings.
4477 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4478 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4480 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4481 (thanks to Eric Marsden)
4482 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4483 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4484 * Bug fix: The SPARC backend can now compile functions involving
4485 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4486 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4487 to a functions expecting a PATHNAME-DESIGNATOR.
4488 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4489 lambda lists. (thanks to Alexey Dejneka)
4490 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4491 functions so that EXPORTing the name of the class doesn't cause
4492 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4493 to Antonio Martinez for reporting this)
4494 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4495 constant-folded without failing an assertion. (thanks to Einar
4496 Floystad Dorum for reporting this)
4497 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4498 types are now dealt with more correctly by the compiler.
4499 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4500 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4501 behaviour analogous to RENAME-FILE. This puts its behaviour more
4502 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4504 * The fasl file version number has changed again. (because of the
4505 bug fix involving the names of PCL MAKE-INSTANCE functions)
4507 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4508 * bug fix: Floating point exceptions are treated much more
4509 consistently on the x86/Linux and PPC/Linux platforms.
4510 * Array initialization with :INITIAL-ELEMENT is now much faster for
4511 cases when the compiler cannot open code the array creation, but
4512 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4513 array accesses have also seen a speed increase.
4514 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4515 specified. (This was at the root of some bad interactions between
4516 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4518 * bug fix: Internal error arguments for undefined functions are now
4519 computed correctly on the PPC/Linux platform.
4520 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4521 Raymond Toy's patch for CMU CL)
4522 * Support for the Solaris 9 operating environment has been included
4523 (thanks to Daniel Merritt)
4524 * A very ugly but hopefully complete draft of the missing FFI chapter
4525 of the manual has been created by reformatting the corresponding
4526 CMU CL manual chapter into (currently very ugly and incoherent)
4527 DocBook and bringing it up to date for SBCL behavior. Thus, the
4528 manual is now essentially complete, at least by my extreme
4529 once-and-only-once standards, whereby it's acceptable to refer to
4530 the doc strings of SB-EXT functions as the primary documentation.
4531 * The fasl file version number has changed again, due to cleanup of
4532 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4533 is no longer a static symbol.)
4535 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4536 * SBCL now builds with OpenMCL (version 0.12) as the
4537 cross-compilation host; also, more progress has been made toward
4538 bootstrapping under CLISP.
4539 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4541 * bug 158 fixed: The compiler can now deal with integer loop
4542 increments different from 1; fixing this turned out also to fix
4544 * bug 169 fixed: no more bogus warnings about using lexical bindings
4545 despite the presence of perfectly good SPECIAL declarations (thanks
4546 to David Lichteblau)
4547 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4548 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4549 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4551 * bug 180 fixed: Method combination specifications no longer ignore
4552 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4553 * bug fix: Structure type predicate functions now check their argument
4554 count as they should.
4555 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4556 correctly. (thanks to Pierre Mai)
4557 * minor incompatible change: The --noprogrammer option is deprecated
4558 in favor of the new --disable-debugger option, which is very similar.
4559 (The major difference is that it takes effect at a slightly different
4560 time at startup, causing handling of errors in --sysinit and
4561 --userinit files will be affected differently.) The
4562 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4563 been added to allow this functionality to be controlled from ordinary
4564 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4565 maintainers, who might want to run non-interactive scripts to
4566 build SBCL cores which will later be used interactively.)
4567 * minor incompatible change: The LOAD function no longer, when given
4568 a wild pathname to load, loads all files matching that pathname.
4569 Instead, an error of type FILE-ERROR is signalled.
4571 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4572 * bug 147 fixed: The compiler preserves its block link/count
4573 invariants more correctly now so that it doesn't crash. (thanks
4575 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4577 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4578 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4579 no-value-for-this-character as NIL (as specified by ANSI).
4580 * HOST-NAMESTRING on physical pathnames now returns a string that is
4581 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4582 (thanks to Christophe Rhodes)
4583 * The Alpha port handles icache flushing more correctly. (thanks to
4585 * More progress has been made toward bootstrapping under CLISP. (thanks
4586 to Christophe Rhodes)
4587 * The fasl file format has changed again, because dynamic loading
4588 on OpenBSD (which has non-ELF object files) motivated some cleanups
4589 in the way that foreign symbols are transformed and passed around.
4590 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4591 is no longer treated as whitespace by the reader, but instead as
4592 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4593 |A
\7fB|, instead of A as it used to.
4595 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4596 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4597 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4598 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4599 this as of 0.7.1.45, but was left out of the previous news section
4600 (thanks to Dan Barlow)
4601 * SBCL now runs on the Solaris operating system on SPARC architectures
4602 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4603 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4604 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4605 * SPARC backend cleanups, allowing builds of cores optimized for V8
4606 and V9 SPARCS, and also emission of code targeted to a particular
4607 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4609 * SBCL is closer to bootstrapping under CLISP, thanks to various
4610 fixes by Christophe Rhodes.
4611 * The fasl file format has changed again, to allow the compiler's
4612 INFO database to support symbol macros.
4613 * The user manual (in doc/) is formatted into HTML more nicely.
4614 (thanks to coreythomas)
4615 * The system is smarter about SUBTYPEP relationships, especially
4616 those involving NOT types (including types such as ATOM which are
4617 represented internally using NOT types). Thus SUBTYPEP is less
4618 likely to return (VALUES NIL NIL) in general, and in particular
4619 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4621 * The fasl file format has changed again, because the internal
4622 representation of types now includes a new slot to support the new
4623 SUBTYPEP-of-NOT-types logic.
4624 * (not a change in the main branch of SBCL, but a related prototype
4625 which can hopefully be merged into the main branch of SBCL in the
4626 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4627 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4628 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4629 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4630 dispatch macro character combinations. (thanks to Alexey Dejneka)
4631 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4632 that superficially look like logical namestrings correctly.
4633 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4635 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4636 default supplied-p) for &optional and &key arguments. (thanks to
4639 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4640 * incompatible change: The compiler is now less aggressive about
4641 tail call optimization, doing it only when (> SPACE DEBUG) or
4642 (> SPEED DEBUG). (This is an incompatible change because there are
4643 programs which relied on the old CMU-CL-style behavior to optimize
4644 away their unbounded recursion which will now die of stack overflow.)
4645 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4646 for non-GENCGC systems has been increased to 20M (since that
4647 seems much closer to the likely performance optimum for modern
4648 systems than the old 4M value was)
4649 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4650 and *DEBUG-PRINT-LEVEL*
4651 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4652 of CMU CL's support for SPARC, and various endianness and other
4653 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4654 * new syntactic sugar for the Unix command line: --load foo.bar is now
4655 an alternate notation for --eval '(load "foo.bar")'.
4657 ** The system now detects stack overflow and handles it gracefully,
4658 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4659 optimization settings. (This is a good thing in general, and
4660 its introduction in this version should be particularly timely
4661 for anyone whose code fails because of suppression of tail
4663 ** The system now hunts for the C variable "environ" in a more
4664 devious way, to avoid segfaults when the C library version differs
4665 between compile time and run time. (thanks to Christophe Rhodes)
4666 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4667 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4668 ** The compiler no longer issues bogus style warnings for undefined
4669 classes in the same source file as the DEFCLASSes which defined
4670 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4672 ** fixes in CONDITION class precedence list for undefined function
4673 errors (thanks to Alexei Dejneka)
4674 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4675 correctly. (thanks to Dan Barlow)
4676 ** portability fixes aiming at bootstrapping under CLISP (thanks
4677 to Dave McDonald and Christophe Rhodes)
4678 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4679 ** fixes in type translation and and type inference (thanks to
4681 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4682 ** various fixes in the new ports (thanks to Dan Barlow)
4683 * several changes related to debugging:
4684 ** suppression of tail recursion, as noted above
4685 ** stack overflow detection, as noted above
4686 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4687 is now the default. (For some time encapsulation has been more
4688 reliable than the breakpoint-based :ENCAPSULATE NIL
4689 implementation, at least on X86 systems; and I just noticed that
4690 encapsulation also seems closer to the spirit of the ANSI
4693 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4695 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4696 up properly again. (There was a packaging bug in 0.7.0 which
4697 left their definitions in SB-SYS::LOAD-FOREIGN and
4698 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4699 vital for most things which interface to C-level interfaces,
4700 like extensions working with sockets or databases or
4701 Perl-compatible regexes or whatever, and the need to fix
4702 this bug is the main reason that 0.7.1 was released so
4704 ** DEFGENERIC is now choosier about the methods it redefines, so that
4705 reLOADing a previously-LOADed file containing DEFGENERICs does
4706 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4707 cycle now works as it should. (thanks to Alexey Dejneka)
4708 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4709 fixed by Christophe Rhodes. (He actually submitted this patch
4710 months ago, and I delayed until after 0.7.0.)
4711 ** Bug 111 (internal compiler confusion about runtime checks on
4712 FUNCTION types) was fixed by Alexey Dejneka.
4713 * Some internal cleanups (getting rid of variables which aren't
4714 needed now that the byte interpreter is gone) caused the fasl
4715 file format number to change again.
4717 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4718 * major incompatible change: The default fasl file extension, i.e. the
4719 default extension for files produced by COMPILE-FILE, has changed
4720 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4722 ** There are many changes in the implementation of the compiler.
4723 SBCL is now essentially a compiler-only implementation of ANSI
4724 Common Lisp. EVAL still "interprets" a few special cases, but
4725 almost all the interesting cases are handled by creating
4726 a LAMBDA expression, calling COMPILE on it, then calling
4727 FUNCALL on the result.
4728 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4729 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4730 Since the code is newer, there might still be some new bugs
4731 (though not as many as before Martin Atzmueller's fixes:-). But
4732 the new code is substantially simpler and clearer, and hopefully
4733 any remaining bugs will be simpler, less fundamental, and more
4734 fixable then the bugs in the old code.
4735 ** The revised compiler is still a little unsteady on its feet.
4737 *** The debugging information it produces (particularly the names
4738 of FUNCTION objects) is sometimes much less useful than what
4739 the old compiler produced.
4740 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4741 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4742 within a MACROLET) has been temporarily weakened.
4743 ** There are new compiler optimizations for various functions:
4744 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4745 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4746 *** the math functions TRUNCATE, FLOOR, and CEILING
4747 *** the function-of-all-trades COERCE
4748 Mostly these should be transparent, but there's one
4749 potentially-annoying problem (bug 117): when the compiler
4750 inline-expands a function and does type analysis on the result,
4751 it can create control paths which have type mismatches, and
4752 when it can't prove that those control paths aren't taken,
4753 it will issue WARNINGs about the type mismatches. This is
4754 a particular problem in practice for the new sequence functions.
4755 It's not clear how this should be fixed, and for now, a
4756 workaround is given in the entry for 117 in the BUGS file.
4757 ** (Because of the interaction between the two previous items --
4758 occasional inlining problems and new inline expansions -- some
4759 of the new sequence function optimizations won't really kick in
4760 completely until debugging information, and then inlining, are
4761 straightened out in some future version.)
4762 * minor incompatible changes:
4763 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4764 DIRECTORY no longer implicitly promotes NIL slots of its
4765 pathname argument to :WILD. In particular, when you ask for the
4766 contents of a directory (which you used to be able to do without
4767 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4768 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4769 ** changes in behavior that ANSI explicitly defines to be
4770 implementation dependent:
4771 *** The new compiler-only implementation still conforms with ANSI,
4772 but acts a little different than before. Besides the obvious
4773 changes in performance tradeoffs (that the cost per form passed
4774 to EVAL has gone up, and the cost per form executed by EVAL
4775 has gone down), the behavior of the system changes a little
4776 because there are no longer any interpreted function objects.
4777 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4778 e.g. doing COMPILE on the output of interactive DEFUN is
4780 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4782 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4783 has changed from (:CL) to NIL.
4784 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4785 e.g. #\Newline and #\Tab, don't have names specified in the
4786 ANSI Common Lisp standard, is now based on their ASCII symbolic
4787 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4788 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4789 are no longer used for output.
4790 ** changes in internal implementation constants:
4791 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4792 4 million. (If your application spends a lot of time GCing and
4793 you have a lot of RAM, you might want to experiment with
4794 increasing it even more.)
4795 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4796 However, almost all old code should still continue to work without
4797 immediate update, as SB-C-CALL is now a (deprecated) nickname
4799 ** Old operator names in the style DEF-FOO are now deprecated in
4800 favor of new corresponding names DEFINE-FOO, for consistency with
4801 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4802 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4803 internal symbols, but a few supported extensions like
4804 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4805 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4806 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4807 etc. as you get deeper into recursive calls to the debugger
4808 command loop, instead of the old "5]", "5]]", "5]]]"
4809 sequence. (I was motivated to do this when squabbles between
4810 ILISP and SBCL left me very deeply nested in the debugger. In the
4811 short term, this change will probably provoke more ILISP/SBCL
4812 squabbles, but hopefully it will be an improvement in the long run.)
4813 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4814 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4815 function, since declaiming return types involving aliens is
4816 (1) annoyingly messy to do by hand and (2) vital to efficient
4817 compilation of code which calls such functions.
4818 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4819 longer reexported by the SB-EXT package. They're solely useful
4820 for alien code, so it seems more logical that you should get
4821 them from the SB-ALIEN package, not in SB-EXT.
4822 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4823 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4824 features. Instead, the code that they used to control is always
4825 built into the system.
4826 * many other bug fixes
4827 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4828 advantage of the new EVAL-WHEN stuff and to clean them up in
4829 general, and they are now more ANSI-compliant in a number of
4830 ways. Martin Atzmueller is responsible for a lot of this.
4831 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4833 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4834 *** correct ERROR type for various file operations
4835 *** some fixes for Lisp streams
4836 *** DEFMETHOD syntax checking
4837 *** changing old weird representation of debug information as
4838 strings (which, among their other deficiencies, don't transform
4839 correctly when you rename packages, and don't change their
4840 print representation when you change things like *PACKAGE*
4841 and *PRINT-LENGTH*) to symbols and lists of symbols
4842 He also made several improvements and fixed several bugs in DESCRIBE.
4843 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4845 *** misbehavior of WRITE-STRING/WRITE-LINE
4846 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4847 and several other LOOP problems as well
4848 *** DIRECTORY when similar filenames are present
4849 *** DEFGENERIC with :METHOD options
4850 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4851 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4852 *** argument ordering in FIND with :TEST option
4853 *** mishandled package designator argument in APROPOS-LIST
4854 *** various problems in the backquote readmacro
4855 *** a bug in APROPOS
4856 *** probably some others that I'm not describing very well here,
4857 since the CVS log documents them by reference to sbcl-devel
4858 messages, and the SourceForge archives aren't working well.:-(
4859 ** Dan Barlow improved the Alpha port (and is making progress on the
4860 PPC port, for those of you who think different).
4861 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4862 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4863 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4864 continues to work on the SPARC port (for those of you in a position
4865 to look down upon our little PC-compatible boxes from a great height).
4866 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4867 and uses that copy, rather than the current dynamic value, when
4868 it's trying to decide whether to truncate output. Thus e.g.
4869 (let ((*print-lines* 50))
4870 (pprint-logical-block (stream nil)
4872 (let ((*print-lines* 8))
4873 (print (aref possiblybigthings i) stream)))))
4874 should now truncate the logical block only at 50 lines, instead of
4875 often truncating it at 8 lines, as it did before.
4876 * The doc/cmucl/ directory, containing old CMU CL documentation
4877 from the time of the fork, is no longer part of the base system.
4878 SourceForge has shut down its anonymous FTP service, and with it
4879 my original plan for distributing the old CMU CL documentation
4880 there. For now, if you need these files you can download an old
4881 SBCL source release and extract them from it.
4882 * The fasl file version number changed again, for dozens of reasons,
4883 some of which are apparent above.
4885 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4886 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4887 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4888 patch, so that DISASSEMBLE output is much nicer.
4889 * The code in the SB-PROFILE package now seems reasonably stable.
4890 I still haven't decided what the final interface should look like
4891 (I'd like PROFILE to interact cleanly with TRACE, since both
4892 facilities use function encapsulation) but if you have a need
4893 for profiling now, you can probably use it successfully with
4894 the current CMU-CL-style interface.
4895 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4896 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4897 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4898 link now returns the dangling link itself, and for similar
4899 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4900 link itself. (In these cases the old code signalled an error and
4901 looped endlessly, respectively.) Thus, DIRECTORY now works even
4902 in the presence of dangling and cyclic symbolic links.
4903 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4904 is now a supported extension again, since the consensus on
4905 sbcl-devel was that it can be useful for ordinary development
4906 work, not just for debugging SBCL itself.
4907 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4908 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4909 that currently-defined functions might be redefined later with
4910 different return types.
4911 * Hash tables can be printed readably, as inspired by CMU CL code
4912 of Eric Marsden and SBCL code of Martin Atzmueller.
4913 * better error handling in CLOS method combination, thanks to
4914 Martin Atzmueller porting Pierre Mai's CMU CL patches
4915 * more overflow fixes for >16Mbyte I/O buffers
4916 * A bug in READ has been fixed, so that now a single Ctrl-D
4917 character suffices to cause end-of-file on character streams.
4918 In particular, now you only need one Ctrl-D at the command
4919 line (not two) to exit SBCL.
4920 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4922 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4923 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4924 does the right thing.
4925 * The implementation of some type tests, especially for CONDITION
4926 types, is now tidier and maybe faster, due to CMU CL code
4927 originally by Douglas Crosher, ported by Martin Atzmueller.
4928 * Some math functions have been fixed, and there are new
4929 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4930 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4931 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4932 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4933 likely to be built into sbcl-0.7.0.)
4934 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4935 CL, ported to SBCL by Martin Atzmueller)
4936 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4937 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4938 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4939 * There's a new slam.sh hack to shorten the edit/compile/debug
4940 cycle for low-level changes to SBCL itself, and a new
4941 :SB-AFTER-XC-CORE target feature to control the generation of
4942 the after-xc.core file needed by slam.sh.
4943 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4944 COMPILE-FILE is no longer supported, so that now every function
4945 gets an entry point, so that block compilation looks a little
4946 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4947 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4948 returns the number of bytes consed since the system started,
4949 rather than the number consed since the first time the function
4950 was called. (The new definition parallels ANSI functions like
4951 CL:GET-INTERNAL-RUN-TIME.)
4952 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4953 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4954 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4955 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4956 * Fasl file version numbers are now independent of the target CPU,
4957 since historically most system changes which required version
4958 number changes have affected all CPUs equally. Similarly,
4959 the byte fasl file version is now equal to the ordinary
4962 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4963 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4964 is no longer recognized. I apologize for this, because it was
4965 listed in SB-EXT as a supported extension, but I found that
4966 its existing behavior was poorly specified, as well as incorrectly
4967 specified, and it looked like too much of a mess to straighten it
4968 out. I have enough on my hands trying to get ANSI stuff to work..
4969 * many patches ported from CMU CL by Martin Atzmueller, with
4970 half a dozen bug fixes in pretty-printing and the debugger, and
4971 half a dozen others elsewhere
4972 * fixed bug 13: Floating point infinities are now supported again.
4973 They might still be a little bit flaky, but thanks to bug reports
4974 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4975 as flaky as they were.
4976 * The --noprogrammer command line option is now supported. (Its
4977 behavior is slightly different in detail from what the old man
4978 page claimed it would do, but it's still appropriate under the
4979 same circumstances that the man page talks about.)
4980 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4981 are now supported, and enabled by default. Thus, the compiler can
4982 handle many floating point and complex operations much less
4983 inefficiently. (Thus e.g. you can implement a complex FFT
4985 * The compiler now detects type mismatches between DECLAIM FTYPE
4986 and DEFUN better, and implements CHECK-TYPE more correctly, and
4987 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4988 thanks to patches from Martin Atzmueller.
4989 * various fixes to make the cross-compiler more portable to
4990 ANSI-conforming-but-different cross-compilation hosts (notably
4991 Lispworks for Windows, following bug reports from Arthur Lemmens)
4992 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4993 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4994 fixed thanks to Pierre Mai's CMU CL patches.
4995 * fixes to keep the system from overflowing internal counters when
4996 it tries to use i/o buffers larger than 16M bytes
4997 * fixed bug 45a: Various internal functions required to support
4998 complex special functions have been merged from CMU CL sources.
4999 (When I was first setting up SBCL, I misunderstood a compile-time
5000 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5001 * improved support for type intersection and union, fixing bug 12
5002 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5003 more obscure bugs as well
5004 * some steps toward byte-compiling non-performance-critical
5005 parts of the system, courtesy of patches from Martin Atzmueller
5006 * Christophe Rhodes has made some debian packages of sbcl at
5007 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5008 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5009 stable, but are nonetheless usable. When he's ready, I'd be happy
5010 to add them to the SourceForge "File Releases" section. (And if
5011 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5012 * new fasl file format version number (because of changes in
5013 internal representation of (OR ..) types to accommodate the new
5014 support for (AND ..) types, among other things)
5016 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5017 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5019 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5021 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5022 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5023 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5024 * DESCRIBE now works on structure objects again.
5025 * Most function call argument type mismatches are now handled as
5026 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5027 know whether the function will be redefined before the call is
5028 executed. (The compiler could flag local calls with full WARNINGs,
5029 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5030 it doesn't keep track of enough information to know whether calls
5031 are local in this sense.)
5032 * Compiler output is now more verbose, with messages truncated
5033 later than before. (There should be some supported way for users
5034 to override the default verbosity, but I haven't decided how to
5035 provide it yet, so this behavior is still controlled by the internal
5036 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5037 src/compiler/ir1util.lisp.)
5038 * Fasl file format version numbers have increased again, because
5039 support for the Gray streams extension changes the layout of the
5040 system's STREAM objects.
5041 * The Gray subclassable streams extension now works, thanks to a
5042 patch from Martin Atzmueller.
5043 * The full LOAD-FOREIGN extension (not just the primitive
5044 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5045 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5046 but like most other programs, it defaults to copying the Unix
5047 environment from the original process instead of starting the
5048 new process in an empty environment.
5049 * Extensions which manipulate the Unix environment now support
5050 an :ENVIRONMENT keyword option which doesn't smash case or
5051 do other bad things. The CMU-CL-style :ENV option is retained
5052 for porting convenience.
5053 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5054 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5056 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5058 * A patch from Martin Atzmueller seems to have solved the SIGINT
5059 problem, and as far as we know, signal-handling now works cleanly.
5060 (If you find any new bugs, please report them!)
5061 * The system no longer defaults Lisp source file names to types
5062 ".l", ".cl", or ".lsp", but only to ".lisp".
5063 * The compiler no longer uses special default file extensions for
5064 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5065 seems to expect a single default extension for all compiled code,
5066 and there's no compelling reason to try to stretch the standard
5067 to allow two different extensions.) Instead, byte-compiled files
5068 default to the same extension as native-compiled files.
5069 * Fasl file format version numbers have increased again, because
5070 a rearrangement of internal implementation packages made some
5071 dumped symbols in old fasl files unreadable in new cores.
5072 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5073 many fewer weird special cases.
5074 * Bug #17 (differing COMPILE-FILE behavior between logical and
5075 physical pathnames) has been fixed, and some related misbehavior too,
5076 thanks to a patch from Martin Atzmueller.
5077 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5078 by Tim Moore, ported to SBCL by Martin Atzmueller.
5079 * Martin Atzmueller fixed several filesystem-related problems,
5080 including bug #36, in part by porting CMU CL patches, which were
5081 written in part by Paul Werkowski.
5082 * More compiler warnings in src/runtime/ are gone, thanks to
5083 more patches from Martin Atzmueller.
5084 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5087 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5089 * DESCRIBE now works on CONDITION objects.
5090 * The debugger now handles errors which arise when trying to print
5091 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5093 * The build system now uses an additional file, customize-target-features.lisp,
5094 to allow local modifications to the target *FEATURES* list. (The point of
5095 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5096 debugging features enabled, without having to worry about propagating it
5097 into everyone's system when I do a "cvs update".) When no
5098 customize-target-features.lisp file exists, the target *FEATURES* list
5099 should be constructed the same way as before.
5100 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5101 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5102 warn about behavior which is undefined under the ANSI spec. Note: This
5103 is specified by ANSI, but it's not very popular with programmers.
5104 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5105 macro in the SBCL sources for an example of a workaround which you
5106 might use to make portable ANSI-standard code which does what you want.
5107 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5108 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5109 when it's used as a non-toplevel form. (This is required in order
5110 to implement the DEFCONSTANT-EQX macro.)
5111 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5112 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5113 funny things, due to bugs in the implementation of EVAL-WHEN
5114 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5115 non-toplevel DEFCONSTANTs are uncommon.)
5116 * The core file version number and fasl file version number have been
5117 incremented, because the old noncompliant DEFCONSTANT behavior involved
5118 calling functions which no longer exist, and because I also took the
5119 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5120 * fixed bug 1 (error handling before read-eval-print loop starts), and
5121 redid debugger restarts and related debugger commands somewhat while
5123 ** The QUIT debugger command is gone, since it did something
5124 rather different than the SB-EXT:QUIT command, and since it never
5125 worked properly outside the main toplevel read/eval/print loop.
5126 Invoking the new TOPLEVEL restart provides the same functionality.
5127 ** The GO debugger command is also gone, since you can just invoke
5128 the CONTINUE restart directly instead.
5129 ** The TOP debugger command is also gone, since it's redundant with the
5130 FRAME 0 command, and since it interfered with abbreviations for the
5132 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5134 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5135 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5136 some porting work by Martin Atzmueller)
5137 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5138 with a boatload of patches which he ported to SBCL. Now that those
5140 ** The system tries to make sure that its low-priority messages
5141 are prefixed by semicolons, to help people who like to use
5142 syntax highlighting in their ILISP buffer. (This patch
5143 was originally due to Raymond Toy.)
5144 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5145 patches originally written by Raymond Toy.
5146 ** The compiler understands coercion between single-value and
5147 multiple-VALUES type expressions better, getting rid of some very
5148 weird behavior, thanks to patches originally by Robert MacLachlan
5149 and Douglas Crosher.
5150 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5151 lambda lists, thanks to a patch originally by Pierre Mai.
5152 ** The system no longer bogusly warns about "abbreviated type
5154 ** The compiler gets less confused by inlining and RETURN-FROM,
5155 thanks to some patches originally by Tim Moore.
5156 ** The system no longer hangs when dumping circular lists to fasl
5157 files, thanks to a patch originally from Douglas Crosher.
5158 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5159 undefined function error.
5160 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5161 in structure slot initforms) for now, documented workaround instead:-|
5162 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5163 * fixed bug 5: added stubs for various Gray stream functions called
5164 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5165 installed, at least appropriate type errors are generated
5166 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5167 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5168 consistently in DEFMETHOD forms.
5169 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5170 it doesn't seem to affect SBCL after all
5171 * The C runtime system now builds with better optimization and many
5172 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5174 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5176 * The system is now under CVS at SourceForge (instead of the
5177 CVS repository on my home machine).
5178 * The new signal handling code has been tweaked to treat register
5179 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5180 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5181 downstream, e.g. in debug-int.lisp, has implicit dependencies
5182 on the unsignedness of integer representation of machine words,
5183 and that caused the system to bomb out with infinite regress
5184 when trying to recover from type errors involving signed values,
5185 e.g. (BUTLAST '(1 2 3) -1).)
5186 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5187 (This was one of the bugs Peter Van Eynde reported back in July.)
5188 * The system now uses code inspired by Colin Walters' O(N)
5189 implementation of MAP (from the cmucl-imp@cons.org mailing
5190 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5191 inline the MAP operation, and there is more than one
5192 sequence argument to the MAP call (so that it can't just
5193 do ETYPECASE once and for all based on the type of the
5194 single sequence argument). (The old non-inline implementation
5195 of the general M-argument sequence-of-length-N case required
5196 O(M*N*N) time when any of the sequence arguments were LISTs.)
5197 * The QUIT :UNIX-CODE keyword argument has been renamed to
5198 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5199 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5201 * Raymond Wiker's patches to port dynamic loading from Linux to
5202 FreeBSD have been added.
5203 * The BUGS file is now more nearly up to date, thanks in large part
5204 to Martin Atzmueller's review of it.
5205 * The debugger now flushes standard output streams before it begins
5206 its output ("debugger invoked" and so forth).
5207 * The core version number and fasl file version number have both
5208 been incremented, because of incompatible changes in the layout
5210 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5211 used to not be called for a saved Lisp image.)
5212 * Martin Atzmueller's version of a patch to fix a compiler crash,
5213 as posted on sbcl-devel 13 September 2000, has been installed.
5214 * Instead of installing Martin Atzmueller's patch for the
5215 compiler transform for SUBSEQ, I deleted the compiler transform,
5216 and transforms for some similar consing operations.
5217 * A bug in signal handling which kept TRACE from working on OpenBSD
5219 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5220 away by constant folding
5221 * The system now defines its address space constants in one place
5222 (in the Lisp sources), and propagates them automatically elsewhere
5223 (through GENESIS and the sbcl.h file). Therefore, patching the
5224 address map is less unnecessarily tedious and error-prone. The
5225 Lisp names of address space constants have also been systematized.
5226 * CVS tags like dollar-Header-dollar have been removed from
5227 the sources, because they have never saved me trouble and
5228 they've been source of trouble working with patches and other
5229 diff-related operations.
5230 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5231 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5233 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5235 * The system has been ported to OpenBSD.
5236 * The system now compiles with a simple "sh make.sh" on the systems
5237 that it's supported on. I.e., now you no longer need to tweak
5238 text in the target-features.lisp-expr and symlinks in src/runtime/
5239 by hand, the make.sh takes care of it for you.
5240 * The system is no longer so grossly inefficient when compiling code
5241 involving vectors implemented as general (not simple) vectors (VECTOR T),
5242 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5243 which dares to use the various sequence functions on non-simple
5244 vectors, takes less of a performance hit.
5245 * There is now a primitive type predicate VECTOR-T-P
5246 to test for the (VECTOR T) type, so that e.g.
5247 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5248 can now be compiled with some semblance of efficiency. (The old code
5249 turned the type declaration into a full call to %TYPEP at runtime!)
5250 * AREF on (VECTOR T) is still not fast, since it's still compiled
5251 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5252 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5253 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5254 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5255 without making full calls to SUBTYPEP at runtime.
5256 (Some analogous efficiency issues for non-simple vectors specialized to
5257 element types other than T, or for non-simple multidimensional arrays,
5258 have not been addressed. They could almost certainly be handled the
5259 same way if anyone is motivated to do so.)
5260 * The changes in array handling break binary compatibility, so
5261 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5262 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5263 instead of (VALUES T T).
5264 * By following the instructions that Dan Barlow posted to sbcl-devel
5265 on 2 July 2000, I was able to enable primitive dynamic object
5266 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5267 functionality is not implemented (since it calls ld to resolve
5268 library references automatically, requiring RUN-PROGRAM for its
5269 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5270 try to resolve library references) is now supported.
5271 * The system now flushes the standard output streams when it terminates,
5272 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5273 them at several other probably-convenient times, e.g. in each pass of
5274 the toplevel read-eval-print loop, and after evaluating a form given
5275 as an "--eval" command-line option. (These changes were motivated by a
5276 discussion of stream flushing issues on cmucl-imp in August 2000.)
5277 * The source transform for TYPEP of array types no longer assumes
5278 that an array whose element type is a not-yet-defined type
5279 is implemented as an array of T, but instead punts, so that the
5280 type will be interpreted at runtime.
5281 * There is now some support for cross-compiling in make.sh: each of
5282 the phases of make.sh has its own script. (This should be transparent
5283 to people doing ordinary, non-cross-compile builds.)
5284 * Since my laptop doesn't have hundreds of megabytes of memory like
5285 my desktop machine, I became more motivated to do some items on
5286 my to-do list in order to reduce the size of the system a little:
5287 ** Arrange for various needed-only-at-cold-init things to be
5288 uninterned after cold init. To support this, those things have
5289 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5290 symbols with such names are now uninterned after cold init).
5291 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5292 fasl files for cold load.
5293 ** Remove the old compiler structure pooling code (which used to
5294 be conditional on the target feature :SB-ALLOC) completely.
5295 ** Redo the representation of some data in cold init to be more compact.
5296 (I also looked into supporting byte compiled code at bootstrap time,
5297 which would probably reduce the size of the system a lot, but that
5298 looked too complicated, so I punted for now.)
5299 * The maximum signal nesting depth in the src/runtime/ support code has
5300 been reduced from 4096 to 256. (I don't know any reason for the very
5301 large old value. If the new smaller value turns out to break something,
5302 I'll probably just bump it back up.)
5303 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5305 * Many, many bugs reported by Peter Van Eynde have been added to
5306 the BUGS list; some have even been fixed.
5307 * While enabling dynamic object file loading, I tried to make the
5308 code easier to understand, renaming various functions and variables
5309 with less ambiguous names, and changing some function calling
5310 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5311 * While trying to figure out how to do the OpenBSD port, I tried to
5312 clean up some of the code in src/runtime/. In particular, I dropped
5313 support for non-POSIX signal handling, added various comments,
5314 tweaked the code to reduce the number of compilation warnings, and
5315 renamed some files to increase consistency.
5316 * To support the new automatic configuration functionality in make.sh,
5317 the source file target-features.lisp-expr has been replaced with the
5318 source file base-target-features.lisp-expr and the machine-generated
5319 file local-target-features.lisp-expr.
5320 * fixed a stupid quoting error in make.sh so that using CMU CL
5321 "lisp -batch" as cross-compilation host works again
5323 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5325 * DESCRIBE no longer tries to call itself recursively to describe
5326 bound/fbound values, so that it no longer fails on symbols which are
5327 bound to themselves (like keywords, T, and NIL).
5328 * DESCRIBE now works on generic functions.
5329 * The printer now prints less-screwed-up representations of closures
5330 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5331 * A private symbol is used instead of the :EMPTY keyword previously
5332 used to mark empty slots in hash tables. Thus
5333 (DEFVAR *HT* (MAKE-HASH-TABLE))
5334 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5335 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5336 now does what ANSI says that it should. (You can still get
5337 similar noncompliant behavior if bang on the hash table
5338 implementation with all the symbols you get back from
5339 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5340 This breaks binary compatibility, since tests for equality to
5341 :EMPTY are wired into things like the macroexpansion of
5342 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5344 * There's now a minimal placeholder implementation for CL:STEP,
5345 as required by ANSI.
5346 * An obscure bug in the interaction of the normal compiler, the byte
5347 compiler, inlining, and structure predicates has been patched
5348 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5349 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5351 * Missing ordinary arguments in a macro call are now detected even
5352 when the macro lambda list contains &KEY or &REST.
5353 * The debugger no longer complains about encountering the top of the
5354 stack when you type "FRAME 0" to explicitly instruct it to go to
5355 the top of the stack. And it now prints the frame you request even
5356 if it's the current frame (instead of saying "You are here.").
5357 * As specified by ANSI, the system now always prints keywords
5358 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5360 * The default initial SIZE of HASH-TABLEs is now smaller.
5361 * Type information from CLOS class dispatch is now propagated
5362 into DEFMETHOD bodies, so that e.g.
5363 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5365 is now basically equivalent to
5366 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5367 (DECLARE (TYPE SINGLE-FLOAT X))
5369 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5370 operation, without having to do run-time type dispatch.
5371 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5372 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5373 * Since I don't seem to be making big file reorganizations very often
5374 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5375 is overflowing my ability to conveniently back them up), I've finally
5376 checked the system into CVS. (The CVS repository is on my home system,
5377 not at SourceForge -- putting it on SourceForge might come later.)
5378 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5379 high-level GC-NOTIFY-FOO functions send their output. (There's
5380 still very little control of where low-level verbose GC functions
5381 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5382 less than it used to -- the GC-NOTIFY-FOO functions are now under
5383 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5384 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5385 in only one place in the source code, and propagates it automatically
5386 everywhere that it's needed. Thus e.g. when I bump the version from
5387 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5388 * The C source files now include boilerplate legalese and documentation
5389 at the head of each file (just as the Lisp source files already did).
5390 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5391 to his page will be replaced with a link to his new CLiki service.
5393 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5395 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5396 * The build process now looks for GNU make under the default name "gmake",
5397 instead of "make" as it used to. If GNU make is not available as "gmake"
5398 on your system, you can change this default behavior by setting the
5399 GNUMAKE environment variable.
5400 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5401 can build without error under CMU CL.
5403 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5405 * There is now a partial SBCL user manual (with some new text and some
5406 text cribbed from the CMU CL manual).
5407 * The beginnings of a profiler have been added (starting with the
5408 CMU CL profiler and simplifying and cleaning up). Eventually the
5409 main interface should be through the TRACE macro, but for now,
5410 it's still accessed through vaguely CMU-CL-style functions and macros
5411 exported from the package SB-PROFILE.
5412 * Some problems left over from porting CMU CL to the new
5413 cross-compilation bootstrap process have been cleaned up:
5414 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5415 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5416 part when getting rid of the compiler *BACKEND* stuff.)
5417 ** The value of *NULL-TYPE* was screwed up, because it was
5418 being initialized before the type system knew the final
5419 definition of the 'NULL type. This screwed up several key
5420 optimizations in the compiler, causing inefficiency in all sorts
5421 of places. (I found it because I wanted to understand why
5422 GET-INTERNAL-RUN-TIME was consing.)
5423 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5424 PROCLAIM FTYPE information. Unfortunately this broke binary
5425 compatibility again, since now the forms output by DEFGENERIC
5426 to refer to functions which didn't exist in 0.6.3.
5427 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5428 can use the new (as of 0.6.3) transform for SOME into MAP into
5430 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5431 values to (INTEGER 0 1000000), so that the time code will no longer
5432 occasionally get blown up by Linux returning 1000000 microseconds
5433 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5434 its output conform to the ANSI spec. (Alas, this makes its output
5435 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5436 * A full call to MAP NIL with a single sequence argument no longer conses.
5437 * fixes to problems pointed out by Martin Atzmueller:
5438 * The manual page no longer talks about multiprocessing as though
5439 it were currently supported.
5440 * The ILISP support patches have been removed from the distribution,
5441 because as of version 5.10.1, ILISP now supports SBCL without us
5442 having to maintain patches.
5443 * added a modified version of Raymond Toy's recent CMU CL patch for
5444 EQUALP comparison of HASH-TABLE
5446 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5448 * The system still can't cross-compile itself with
5449 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5450 entails), but at least it can compile more of itself that way
5451 than it used to be able to, and various buglets which were uncovered
5452 by trying to cross-compile itself that way have now been fixed.
5453 * This release breaks binary compatibility again. This time
5454 at least I've incremented the FASL file format version to 2, so that the
5455 problem can be detected reliably instead of just causing weird errors.
5456 * various new style warnings:
5457 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5458 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5459 ** using the lexical binding of a variable named in the *FOO* style
5460 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5461 as specified by ANSI.
5462 * *RANDOM-STATE* is no longer automatically initialized from
5463 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5464 default behavior of the system is to repeat its behavior every time
5465 it's run. If you'd like to change this behavior, you can always
5466 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5467 old convention there was no comparably easy way to get the system to
5468 repeat its behavior every time it was run.
5469 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5470 FTYPE declarations has been removed, in favor of their ANSI
5471 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5472 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5473 the types of their sequence arguments can be determined at compile time.
5474 This is done through a new open code expansion for MAP which eliminates
5475 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5476 argument types can be determined at compile time.
5477 * The optimizer now transforms COERCE into an identity operation when it
5478 can prove that the coerced object is already of the correct type. (This
5479 can be a win for machine generated code, including the output of other
5480 optimization transforms, such as the MAP transform above.)
5481 * Credit information has been moved from source file headers into CREDITS.
5482 * Source file headers have been made more standard.
5483 * The CASE macro now compiles without complaining even when it has
5486 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5488 * (Note that the way that the PCL macroexpansions were rewritten
5489 to accommodate the change in DEFGENERIC below breaks binary
5490 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5491 not run under sbcl-0.6.2. Once we get out of alpha releases,
5492 i.e. hit release 1.0.0, we'll probably try to maintain binary
5493 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5494 and sbcl-1.4.4. Until then, however, it might be fairly common
5495 for maintenance releases to break binary compatibility.)
5496 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5498 * The reporting of unhandled signals has been changed to print some
5499 explanatory text as well as the report form. (Previously only
5500 the report form was printed.)
5501 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5502 it defines, so that the compiler no longer issues undefined function
5503 warnings for compiled-but-not-yet-loaded generic functions.
5504 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5505 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5506 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5507 section of the ANSI spec are supported.
5508 * The "" nickname for the "KEYWORD" package has been removed.
5509 The reader still handles symbol tokens which begin with a package marker
5510 as keywords, but it doesn't expose its mechanism for doing so in the
5511 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5512 * The system now issues STYLE-WARNINGs for contradictory TYPE
5513 proclamations. (Warnings for contradictory FTYPE proclamations would
5514 be nice too, but those can't be done usefully unless the type system
5515 is made smarter about FUNCTION types.)
5516 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5517 systematized, so that "*target-*.lisp is supposed to exist only on the
5518 target and imply that there's a related file which exists on the
5519 host, and *host-*.lisp is supposed to exist only on the host and imply
5520 that there's a related file which exists on the target. This involves a
5521 lot of renaming. Hopefully the acute confusion caused by the renaming
5522 will be justified by the reduction in chronic confusion..
5523 ** runtime-type.lisp -> early-target-type.lisp
5524 ** target-type.lisp -> late-target-type.lisp
5525 ** early-host-format.lisp -> early-format.lisp
5526 ** late-host-format.lisp -> late-format.lisp
5527 ** host-error.lisp -> misc-error.lisp
5528 ** early-error.lisp -> early-target-error.lisp
5529 ** late-error.lisp -> late-target-error.lisp
5530 ** host-defboot.lisp -> early-defboot.lisp
5531 ** code/misc.lisp -> code/target-misc.lisp
5532 ** code/host-misc.lisp -> code/misc.lisp
5533 ** code/numbers.lisp -> code/target-numbers.lisp
5534 ** code/early-numbers.lisp -> numbers.lisp
5535 ** early-host-type.lisp -> early-type.lisp
5536 ** late-host-type.lisp -> late-type.lisp
5537 ** host-typep.lisp -> typep.lisp
5538 ** load.lisp -> target-load.lisp
5539 ** host-load.lisp -> load.lisp
5540 ** host-disassem.lisp -> disassem.lisp
5541 ** host-insts.lisp -> insts.lisp
5542 ** byte-comp.lisp -> target-byte-comp.lisp
5543 ** host-byte-comp.lisp -> byte-comp.lisp
5544 ** host-signal.lisp -> signal.lisp
5545 ** host-defstruct.lisp -> defstruct.lisp
5546 ** late-target-type.lisp -> deftypes-for-target.lisp
5547 Furthermore, several other previously target-only files foo.lisp (e.g.
5548 hash-table.lisp and random.lisp) have been split into a target-and-host
5549 foo.lisp file and a target-only target-foo.lisp file, with their key type
5550 definitions in the target-and-host part, so that the cross-compiler will
5551 know more about target types.
5552 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5553 gone away. In their place are various *BACKEND-FOO* variables
5554 corresponding to the slots of the old structure.
5555 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5556 into the target SBCL has been fixed.
5557 * The chill.lisp system for loading cold code into a running SBCL
5559 * Support for the CMU CL "scavenger hook" extension has been removed.
5560 (It was undocumented and unused in the CMU CL sources that SBCL was
5561 derived from, and stale in sbcl-0.6.1.)
5562 * Various errors in the cross-compiler type system were detected
5563 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5564 (enabling various consistency checks). Many of them were fixed,
5565 but some hard problems remain, so the compiler is back to
5566 running without *TYPE-SYSTEM-INITIALIZED* for now.
5567 * As part of the cross-compiler type system cleanup, I implemented
5568 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5569 * I have started adding UNCROSS calls throughout the type system
5570 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5571 on cross-compiler input files will be able to go away, and various
5573 * CONSTANTP now returns true for quoted forms (as explicitly required
5576 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5578 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5579 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5580 (MAKE-LIST -1). In the longer term, it ought to become true
5581 that declarations are assertions even at SAFETY 1. For now, it's not
5582 quite true even at SAFETY 3, but it's at least more nearly true..
5583 (Note that this change seems to increases the size of the system by
5584 O(5%) and to decrease the speed of the compiler by 20% or more.)
5585 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5586 for the problem of printing dozens of lines of distracting information
5587 about low-level system machinery as part of the top stack frame
5588 on entry to the debugger when an undefined function was called.
5589 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5590 is not reset to COMMON-LISP-USER.
5591 * Compilation of stuff related to dyncount.lisp has been made conditional
5592 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5593 smaller. The various dyncount-related symbols have been moved into
5594 a new "SB-DYNCOUNT" package.
5595 * tty-inspect.lisp has been renamed to inspect.lisp.
5596 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5597 feature has gone away. (When we eventually port to other flavors of
5598 libc and/or Unix, we'll try to make the differences between flavors
5599 invisible at the user level.)
5600 * Various other *FEATURES* tags, and/or their associated conditionals,
5601 have been removed if obsolescent, or given better documentation, or
5602 sometimes given more-mnemonic names.
5604 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5606 * tidied up "make.sh" script
5607 * tidied up system directory structure
5608 * better "clean.sh" behavior
5609 * added doc/FOR-CMUCL-DEVELOPERS
5610 * many many small tweaks to output format, e.g. removing possibly-confusing
5611 trailing #\. character in DESCRIBE-INSTANCE
5612 * (EQUALP #\A 'A) no longer signals an error.
5613 * new hashing code, including EQUALP hashing
5614 * tidied up Lisp initialization and toplevel
5615 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5616 * command line argument processing
5617 * added POSIX-GETENV function to deal with Unix-ish environment variables
5618 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5619 terminating SBCL on EOF
5620 * non-verbose GC by default
5621 * There is no more "sbcl" shell script; the sbcl file is now the C
5622 runtime executable (just like CMU CL).
5623 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5625 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5626 symbol and package information as Lisp native symbol and package objects
5627 instead of strings naming symbols and strings naming packages. This way,
5628 whenever packages are renamed (as in warm init), debug information is
5629 transformed along with everything else.
5630 * tweaked the optimization policy declarations which control the building
5631 of SBCL itself. Now, among other things, the system no longer saves
5632 source location debugging information. (This helps two problems at once
5633 by reducing SBCL size and by keeping SBCL from trying to look for its
5634 sources -- which may not exist -- when reporting errors.)
5635 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5636 debugging and testing purposes
5637 * cleaned up printing, making the printer call PRINT-OBJECT for
5638 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5639 methods, giving nearly-ANSI behavior
5640 * converted almost all special variables to use *FOO* naming convention
5641 * deleted PARSE-TIME functionality, since it can be done portably
5642 * moved some files out of cold init into warm init
5643 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5645 * regularized formatting of source files
5646 * added an install.sh script
5647 * fixed ridiculous memory usage of cross-compiler by making
5648 compiler/alloc.lisp not try to do pooling unless it can hook
5649 itself into the GC of the cross-compilation host. Now the system
5650 builds nicely on my old laptop.
5651 * added :SB-ALLOC in target-features.lisp-expr
5652 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5653 was not implemented)
5654 * re-did condition handling and note reporting in the compiler. Notes
5655 are no longer handled by signalling conditions. Style warnings
5656 and warnings are handled more correctly and reported in such a way
5657 that it's easy to find one or the other in your output (so that you
5658 can e.g. figure out which of many problems caused COMPILE-FILE to
5660 * changed the severity of several compiler warnings from full WARNING
5661 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5662 compiler note reporting so that it doesn't use the condition system
5663 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5664 COMPILE-FILE command)
5665 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5666 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5667 no longer supported, since their implementation was deeply intertwingled
5668 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5669 * removed bogus "support" for compiler macros named (SETF FOO), and
5670 removed the compiler macro for SETF INFO (but only after making a fool
5671 of myself on the cmucl-imp mailing list by posting a bogus patch for
5672 DEFINE-COMPILER-MACRO..)
5673 * Compiled files containing forms which have side effects on the Lisp
5674 reader (such as DEFPACKAGE forms) are now handled more correctly.
5675 (Compiler queuing of top level lambdas has been suppressed by setting
5676 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5677 * deleted various currently-unused source files, e.g. gengc.lisp. They
5678 may be added back at some point e.g. when porting to other architectures,
5679 but until they are it's distracting to distribute them and to try to
5681 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5682 there were so many of them they're just distractions, and UNCROSS is
5683 known to be able to handle the current sources
5684 * moved PROFILE functionality into TRACE, so that it will be clear
5685 how the wrapping and unwrapping of functions when you profile them
5686 interacts with the wrapping and unwrapping of functions when you
5687 trace them. (Actually, the functionality isn't there yet, but at least
5688 the interface specification is there. Hopefully, the functionality will
5689 arrive with some future maintenance release.)
5690 * removed host-oops.lisp
5691 * changed signature of QUIT function to allow UNIX-CODE argument
5692 * fixed READ-SEQUENCE bug
5693 * tweaked verbose GC output so that it looks more like the progress
5694 output that ANSI specifies for functions like LOAD
5695 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5696 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob