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 * improvements to the instrumenting profiler
35 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
36 ** optimization: counters no longer use locks for the overflow mode.
37 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
38 incurred an off-by-one miscount.
39 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
40 * bug fix: a rare case of startup-time page table corruption.
41 * bug fix: a semaphore with multiple waiters and some of them unwinding due
42 to timeouts could be left in an inconsistent state.
43 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
44 * bug fix: misoptimization of multiplication by one in
45 (SB-C::FLOAT-ACCURACY 0) policies.
46 * bug fix: miscounts in SB-PROFILE.
47 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
48 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
49 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
50 up itself" (March 2010) for further details.
51 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
52 against length of the list if the element is found before the specified
53 END is reached. (thanks to Alec Berryman, lp#554385)
54 * bug fix: errors signalled during package graph modification no longer
55 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
57 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
58 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
59 stack frame thrown from.
60 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
61 compiler optimization qualities inside dynamic extent of its body.
62 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
63 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
65 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
66 constraint propgation, allowing better compilation eg. when used to
67 access structures with WITH-SLOTS. (lp#520366)
68 * optimization: the compiler is now more aware of the type of the underlying
69 storage vector for multidimensional simple arrays resulting in better code
70 for accessing such arrays.
71 * optimization: passing NIL as the environment argument to TYPEP no longer
72 inhibits optimizing it. (lp#309788)
73 * optimization: more efficient register usage when handling single-float
74 arguments on x86-64. (thanks to Lutz Euler)
75 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
76 pre-allocated temporary vectors. (lp#496249)
77 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
78 in :INITIAL-CONTENTS. (lp#523612)
79 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
80 functions. (lp#524707)
81 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
82 WITH-SLOTS usages during compilation.
83 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
84 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
85 all x86oid platforms with :UD2-BREAKPOINTS target feature.
86 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
87 instruction (tested on x86oid linux with ud2-breakpoints).
88 * bug fix: slam.sh now works on win32.
89 * bug fix: better differences of numeric types. (lp#309124)
90 * bug fix: arrays declared intersection and union types can have their
91 upgraded element type derived. (lp#316078)
92 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
93 threads started during profiling. (lp#472499)
94 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
96 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
97 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
98 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
99 values instead of signaling an error. (lp#309093)
100 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
102 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
103 declarations (lp#497321)
104 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
105 and failed to detect circular lists (lp#452008)
106 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
108 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
109 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
110 due to it, so that handlers can run.
111 * bug fix: reparsing undefined types if they have become defined since
113 * bug fix: missing &REST type in a proclamation for a function with both
114 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
115 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
116 expanded calls (lp#542174)
117 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
118 than just at toplevel form.
120 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
121 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
122 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
123 but work on type specifiers.
124 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
125 to name a type specifier.
126 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
127 specifier is valid where "valid" basically means "would be accepted as
128 second argument of TYPEP".
129 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
130 returns the function's declared, or derived FTYPE.
131 * new feature: SB-POSIX now supports accessing the d_ino member of
132 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
133 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
134 provide for seeding a RANDOM-STATE object with user-provided data or
135 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
136 attempt to initialize the returned state from the operating system's
137 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
138 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
139 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
140 * bug fix: Fix grammar and style issues for the docstrings of
141 printer-related variables and functions. (Thanks to mon_key; launchpad
143 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
145 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
146 in a row even though a handler defered the deadline long into the
148 * bug fix: A deadline handler was run without interrupts enabled for a
149 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
150 in infinitely spinning, non-killable threads.
151 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
152 before reaching the erring stack frame.
153 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
154 real power. (launchpad bug lp#525949)
155 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
156 GENCGC platforms. (launchpad bug lp#529014)
157 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
158 (launchpad bug lp#525916)
159 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
160 (Thanks to Robert Goldman)
162 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
163 * optimization: ROUND with a single single-float or double-float argument
164 is properly inlined when possible.
165 * optimization: Slightly better code is generated for integer<->float
166 conversions and for single-float<->double-float conversions on x86-64.
167 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
168 code for 32-bit and 64-bit rotations on x86-64.
169 * bug fix: The install script changes the ownership of directories as well
170 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
171 launchpad bug lp#508485)
172 * bug fix: TRUNCATE with a single single-float or double-float argument is
173 properly inlined when possible. (launchpad bug lp#489388)
174 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
175 no longer causes a compiler error on x86 and ppc.
176 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
177 always relative to *READTABLE* rather than the passed argument.
179 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
180 * minor incompatible change: threading support is now enabled by default
182 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
184 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
185 are now caught and reported just like errors during macroexpansion.
186 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
187 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
188 * enhancement: ASDF systems can now depends on SB-QUEUE.
189 * fixes and improvements related to Unicode and external formats:
190 ** bug fix: error handling and restart usage in the ucs-2 external format
192 ** there is now an implementation of the ucs-4 external format.
193 ** the utf-16 and utf-32 external formats are supported.
194 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
195 in the environment. setenv() and unsetenv() are also provided. (reported by
196 Fare Rideau; launchpad bug lp#460455)
197 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
198 loading. This ensures sensible errors for .FASL files from other
199 implementations on case-insensitive filesystems. (reported by Willem
200 Broekema; launchpad bug lp#489417)
201 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
202 Willem Broekema; launchpad bug lp#489698).
203 * bug fix: some minor code rearrangements to reenable warning-free building
204 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
205 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
207 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
210 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
211 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
212 * improvement: support O_LARGEFILE access to files larger than 2GB on
213 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
214 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
215 definitions for methods specializing on the passed class itself.
216 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
217 definitions for methods specializing on the passed class itself, or on
219 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
220 about itself during the build (e.g. for M-? in Slime), if this flag is
221 enabled in customize-target-features.lisp. This will increase the core
222 size by about 5-6mb, though, so it's mostly interesting to SBCL
224 * new feature: various GENCGC tuning parameters have been experimentally
225 documented and exported from SB-EXT. See documentation for details.
226 * fixes and improvements related to Unicode and external formats:
227 ** the Unicode character database has been upgraded to the
228 Unicode 5.2 standard, giving names and properties to a number of new
229 characters, and providing a few extra characters with case
231 ** improvement: restarts for providing replacement input/output on coding
232 errors for fd-stream external formats.
233 ** improvement: where :<encoding> is a keyword corresponding to an
234 external format the system supports, it is now possible to specify
235 (:<encoding> :replacement <character>) as an external format which will
236 automatically substitute <character> on encoding or decoding errors for
237 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
239 ** improvement: the file streams underlying the standard streams (such as
240 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
241 which uses the replacement mechanism to handle encoding errors,
242 preventing various infinite error chains and unrecoverable I/O
244 ** minor incompatible change: the utf-8 external format now correctly
245 refuses to encode Lisp characters in the surrogate range (char-codes
246 between #xd800 and #xdfff).
247 ** fix a typo preventing conversion of strings into octet vectors
248 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
250 ** fix a bug in the octet multibyte handling of decoding errors and the
251 USE-VALUE restart. (launchpad bug lp#314939)
252 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
253 restart on fd-stream decoding errors.
254 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
255 error is near the end of file.
256 ** fix a double-error case in unibyte octet conversions, when the first
257 use of USE-VALUE is ignored.
258 ** fix bugs in handling of undefined code points in unibyte encodings.
259 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
260 streams after an UNREAD-CHAR.
261 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
262 object is allocated in a boxed region of dynamic space.
263 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
264 fork with multiple Lisp threads running is made, instead of going
265 ahead with unpredictable consequences. (reported by Leslie Polzer)
266 * bug fix: uses of slot accessors on specialized method parameters within
267 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
268 error while finalizing the class. This fix may cause classes with slot
269 accessors to be finalized later than previously. (reported by Lars Rune
270 Nøstdal; launchpad bug lp#473699)
271 * bug fix: restore buildability on the MIPS platform. (regression from
272 1.0.30.38, reported by Samium Gromoff)
273 * bug fix: inspecting closures is less likely to fail with a type error.
274 * bug fix: no timer starvation when setting the system clock back.
275 (launchpad bug lp#460283)
276 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
277 standard pprint dispatch table as specified by CLHS.
278 * bug fix: give CLISP a hint about a type declaration to enable it to build
279 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
281 * bug fix: correctly dump literal objects in defaulting forms of arglists.
282 (reported by Attila Lendvai; launchpad bug lp#310132)
283 * bug fix: distinguish in type specifiers between arrays that might be
284 complex and arrays that are definitely complex. (launchpad bug lp#309129)
285 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
286 type. (reported by Levente Mészáros; launchpad bug lp#485972)
287 * bug fix: setting the value of a symbol-macro within a method in the
288 presence of type declarations works properly again. (reported by Iban
289 Hatchondo; launchpad bug lp#485019)
291 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
292 * optimization: faster FIND and POSITION on strings of unknown element type
293 in high SPEED policies. (thanks to Karol Swietlicki)
294 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
296 * improvement: better error signalling for bogus parameter specializer names
297 in DEFMETHOD forms (reported by Pluijzer)
298 * bug fix: DELETE-FILE once again works on logical pathnames (regression
300 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
302 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
303 removes previous default initargs (reported by Lars Rune Nøstdal and
305 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
306 lambda-lists. (reported by Peter Seibel)
307 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
308 correctly when starting from an executable core without saved runtime
309 options (reported by Faré Rideau, thanks to Zach Beane)
310 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
311 an optimization note instead. (reported by Martin Cracauer)
312 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
313 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
314 new process group if it doesn't need to share stdin with the sbcl
315 process. (thanks to Leslie Polzer)
316 * bug fix: SATISFIES could be misoptimized to refer to a local function.
317 (reported by Stanislaw Halik)
319 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
320 * improvement: stack allocation is should now be possible in all nested
321 inlining cases: failure to stack allocate when equivalent code is manually
322 open coded is now considered a bug.
323 * improvements related to Unicode:
324 ** the Unicode character database has been upgraded to the
325 Unicode 5.1 standard, giving names and properties to a number of new
326 characters, and providing a few extra characters with case
328 ** the system now recognizes and produces names for Unicode Hangul
330 ** the EBCDIC-US external-format is now supported for octet operations
331 (as well as for stream operations).
332 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
333 be used to output toplevel compile-time effects into a separate .CFASL
335 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
336 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
338 * optimization: TRUNCATE on known single- and double-floats is upto 25%
340 * optimization: division of floating point numbers by constants uses
341 multiplication by reciprocal when an exact reciprocal exists.
342 * optimization: multiplication of single- and double-floats floats by
343 constant two has been optimized.
344 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
345 sufficient type information is available. (thanks to Leslie Polzer)
346 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
347 known structure objects are as efficient as defstruct generated accessors.
348 * optimization: unused vector creation can now be optimized away.
349 * improvement: ASDF systems can now depends on SB-INTROSPECT.
350 * improvement: a STYLE-WARNING is signalled when a generic function
351 clobbers an earlier FTYPE proclamation.
352 * improvement: the compiler is able to track the effective type of
353 generic function across method addition and removal even in the
354 absence of an explicit DEFGENERIC.
355 * improvement: DESCRIBE now reports on symbols naming undefined
356 but assumed or declared function as well.
357 * improvement: recompilation of systems using SB-GROVEL now works
358 (thanks to Leslie Polzer)
359 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
360 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
362 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
363 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
364 well as user defined declaration names.
365 ** VARIABLE-INFORMATION is now aware of alien variables.
366 * improvement: improved address space layout on OpenBSD (thanks to Josh
368 * improvement: pretty-printing of various Lisp forms has been improved
369 (thanks to Tobias Rittweiler)
370 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
371 unused were deleted in safe code. (reported by John Fremlin)
372 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
374 * bug fix: some out-of-line array predicates were missing (reported by
376 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
378 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
379 (thanks to Larry D'Anna)
380 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
381 as well. (reported by Josh Elsasser)
382 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
383 leading to possible attempts to delete the same file twice. See docstring
384 on DELETE-FILE for details. (reported by John Fremlin)
385 * bug fix: DELETE-FILE once again deletes the file named by the pathname
386 designator argument, rather than its truename. (reported by Luis
388 * bug fix: the low-level debugger had 32-bit assumptions and was missing
389 information about some array types. (thanks to Luis Oliveira)
390 * bug fix: moderately complex combinations of inline expansions could
391 be miscompiled if the result was declared to be dynamic extent.
392 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
393 form (+ <variable> <integer>) were miscompiled under certain
395 * bug fix: in some cases no compiler note about failure to stack allocate
396 was emitted, even if the objects were in fact heap allocated.
397 * bug fix: minor violation of "otherwise inaccessible" rule for stack
398 allocation could cause objects users might reasonably expect to
399 be heap allocated to be stack allocated.
400 * bug fix: DESCRIBE signalled an error for generic functions under
401 certain circumstances. (thanks to Leslie Polzer)
402 * bug fix: Fixed spelling of an error message.
404 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
405 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
406 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
407 of SB-THREAD:THREAD-ERROR-THREAD.
408 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
409 * new feature: docstrings for local and anonymous functions are no longer
410 discarded. (thanks to Leslie Polzer)
411 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
412 values in other threads.
413 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
414 about object allocation.
415 * optimization: division of a real float by a complex float is implemented
416 with a specialised code sequence.
417 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
418 keywords is an order of magnitude faster.
419 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
420 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
421 methods, and similarly for non-standard metaclass classes as long as there
422 are no methods additional on MAKE-INSTANCE.
423 * optimization: more efficient type-checks for FIXNUMs when the value
424 is known to be a signed word on x86 and x86-64.
425 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
426 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
428 * optimization: compiler is smarter about delegating argument type checks to
430 * optimization: several character functions are now compiled somewhat more
431 efficiently. (reported by Lynn Quam)
432 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
433 * improvement: less unsafe constant folding in floating point arithmetic,
434 especially for mixed complex/real -float operations.
435 * optimization: constant double and single floats are stored in native
436 unboxed format on x86[-64].
437 * optimization: smarter code for arithmetic operations with constant floats,
438 complex floats, or integers on x86[-64].
439 * optimization: smarter code for conjugate/multiplication of float complexes
440 and abs/negate of floats on x86-64.
441 * optimization: more efficient complex float and real float operations on
443 * improvement: complex float division is slightly more stable.
444 * improvement: DESCRIBE output has been reworked to be easier to read and
445 contains more pertinent information.
446 * improvement: failure to provide requested stack allocation compiler notes
447 provided in all cases (requested stack allocation not happening without a
448 note being issued is now considered a bug.)
449 * bug fix: SB-POSIX exports the documented types and functions
450 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
451 types. (reported by "abhi")
452 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
453 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
454 (thanks to Paul Khuong)
455 * bug fix: looping around HANDLER-CASE could silently consume stack space
456 on each iteration. (reported by "foobar")
457 * bug fix: better error signalling when calls to functions seeking elements
458 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
459 (reported by Tobias Rittweiler)
460 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
461 directory components now works as it used to. (various prolems reported by
462 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
463 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
464 (reported by Elliot Slaughter, thanks to Stas Boukarev)
465 * bug fix: bogus undefined variable warnings from fopcompiled references to
466 global variables. (thanks to Lars Rune Nøstdal)
467 * bug fix: foreign function names should now appear in backtraces on
468 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
469 * bug fix: SETF compiler macro documentation strings are not discarded
471 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
472 (thanks to Alex Plotnick)
473 * bug fix: SLEEP accepts large integer arguments, truncating them to
474 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
475 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
476 * bug fix: compiler notes for expensive slot type checks could be emitted
477 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
479 changes in sbcl-1.0.29 relative to 1.0.28:
480 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
481 https://bugs.launchpad.net/sbcl
482 Bugs can be reported directly there, or by sending email to
483 sbcl-bugs@lists.sourceforge.net
484 (no subscription required.)
485 * minor incompatible change: under weak type checking policy integer
486 types are weakened less aggressively.
487 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
488 allowed to return, which causes SBCL to quit with exit status 0. Previously
489 if the function returned with a small integer return value, that value
490 was accidentally reused as the exit status.
491 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
492 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
493 :HASH-FUNCTION argument. Refer to user manual for details.
494 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
496 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
497 microseconds since the Unix epoch on all platforms.
498 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
499 allows the compiler to safely elide boundedness checks for special
501 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
502 the symbol, prohibits both lexical and dynamic binding. This is mainly an
503 efficiency measure for threaded platforms, but also valueable in
505 * new feature: UNC pathnames are now understood by the system on Windows.
506 * optimization: the compiler uses a specialized version of FILL when the
507 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
509 * optimization: accesses to potentially non-simple arrays where element type
510 is known are 50% faster.
511 * optimization: compiler now generates faster array typechecking code.
512 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
514 * optimization: multidimensional array accesses in the absence of type
515 information regarding array rank are approximately 10% faster due to
516 open coding of ARRAY-RANK.
517 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
518 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
520 * optimization: result of call to VECTOR can now be stack allocated.
521 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
522 as long as the resulting array is one-dimensional and has a known
523 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
524 length of the list matches the known length of the vector does not
525 allocate the list as an intermediate step. Ditto for VECTOR and simple
527 * optimization: MAKE-ARRAY can now stack allocate in the presence of
528 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
529 known element type, and is known to be simple and one dimensional.
530 * improvement: SBCL now emits a compiler note where stack allocation was
531 requested but could not be provided (not in all cases, unfortunately)
532 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
533 * improvement: pretty-printing loop has been implemented properly. (thanks
534 to Tobias Rittweiler)
535 * documentation: CLOS slot typechecing policy has been documented.
536 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
537 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
538 pointer, leading to memory faults. (thanks to Bart Botta)
539 * bug fix: better floating point exception handling on x86/OpenBSD.
540 (thanks to Josh Elsasser)
541 * bug fix: exit status from QUIT when called under --script was lost
542 (reported by Hubert Kauker)
543 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
544 same implementation of FILL to initialize the array, even if a more
545 efficient one was available (reported by Stas Boukarev, thanks to
547 * bug fix: potential miscompilation of array stack allocation on x86 and
548 x86-64. (reported by Time Tossavainen)
549 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
550 result in their subforms being treated as top level forms. (reported by
552 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
553 than a machine register could leave garbage in the high bits of the
554 result register (bug 316325).
555 * bug fix: disable address space randomization Linux/x86-64 as well,
556 not just x86-64. (reported by Ken Olum)
557 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
558 generate incorrect code.
559 * bug fix: #201; type inference for CONS and ARRAY types could derive
560 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
561 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
562 could not be assigned to or bound with PROGV. (reported by Lorenz
564 * bug fix: the value of CL:- in the inspector was the previous expression
565 evaluated rather than the expression being evaluated.
566 * bug fix: constants can no longer be locally declared special.
567 * bug fix: signals delivered to threads started from foreign land (read:
568 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
569 thread by blocking all signals and resignalling.
570 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
571 from :INITFORM, if any.
573 changes in sbcl-1.0.28 relative to 1.0.27:
574 * a number of bugs in cross-compilation have been fixed, with the ultimate
575 result that building under (at least) clisp should be much more reliable.
576 * minor incompatible changes: echo-streams now propagate unread-char to the
577 underlying input stream, and no longer permit unreading more than one
579 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
580 frames, allowing for instance more reliable backtraces.
581 * improvement: the debugger REPL can now reference lexical variables
582 by name directly for code compiled with (DEBUG 3).
583 * improvement: errors from malformed declarations now have better source
584 paths associated with them. (thanks to Tobias Rittweiler)
585 * optimization: faster local calls on x86/x86-64
586 * bug fix: some error messages for out-of-bound array indexes confused the
587 index and the bound. (thanks to Stas Boukarev)
588 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
590 * bug fix: running regressions tests in shells without OSTYPE set now works.
591 (reported by Harald Hanche-Olsen)
592 * bug fix: more robust static space exhaustion signalling from
593 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
594 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
595 docstring away instead of storing it under names such as (LAMBDA (X)).
596 (reported by Leslie Polzer)
597 * bug fix: timers could go off in the wrong order, be delayed indefinitely
598 (thanks to Ole Arndt for the patch)
599 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
600 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
601 potentially-invalid effective methods in its cache.
602 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
603 instances as well (thanks to Paul Khuong)
604 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
605 SB-POSIX:WAITPID and their C equivalents.
606 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
608 changes in sbcl-1.0.27 relative to 1.0.26:
609 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
610 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
611 * improvement: the system either recovers from stack exhaustion or dies
612 properly as opposed to leaving the user uncertain of whether the handler
613 trampled on some random memory next to the stack or having to rely on
614 --lose-on-corruption (which is still a good idea to use in production
615 because stack exhaustion can happen in signal handlers which will likely
617 * bug fix: fix gc related interrupt handling bug on ppc (regression from
618 1.0.25.37, reported by Harald Hanche-Olsen)
619 * bug fix: work around signal delivery bug in darwin (regression from
620 1.0.25.44, reported by Sidney Markowitz)
621 * bug fix: fix ERROR leaking memory (reported by David Thompson)
623 changes in sbcl-1.0.26 relative to 1.0.25:
624 * incompatible change: an interruption (be it a function passed to
625 INTERRUPT-THREAD or a timer function) runs in an environment where
626 interrupts can be enabled. The interruption can use
627 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
628 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
629 potentially running out of stack. Keep in mind that in the absence
630 of WITHOUT-INTERRUPTS some potentially blocking operation such as
631 acquiring a lock can enable interrupts.
632 * incompatible change: GC-OFF and GC-ON are removed, as they were
633 always unsafe. Use WITHOUT-GCING instead.
634 * new feature: runtime option --disable-ldb
635 * new feature: runtime option --lose-on-corruption to die at the
636 slightest hint of possibly non-recoverable errors: running out of
637 memory, stack, alien stack, binding stack, encountering a memory
638 fault, etc. In the absence of --lose-on-corruption a warning is
640 * enhancement: detect binding stack exhaustion
641 * enhancement: detect alien stack exhaustion on x86/x86-64
642 * improvement: generally more stable and reliable interrupt handling
643 * improvement: there is a per thread interruption queue,
644 interruptions are executed in order of arrival
645 * improvement: a repeating timer reschedules itself when the it has
646 finished, but expiration times are spaced equally. If an
647 expiration time is in the past it will trigger after a short grace
648 period that may give a chance to other things to run.
649 * optimization: slightly faster gc on multithreaded builds
650 * optimization: faster WITHOUT-GCING
651 * bug fix: when JOIN-THREAD signals an error, do it when not holding
652 important locks so that the debugger/handler doesn't produce
653 recursive errors or deadlock.
654 * bug fix: real-time signals are not used anymore, so no more
655 hanging when the system wide real-time signal queue gets full.
656 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
658 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
659 * bug fix: fix random memory faults related to interrupts on alpha
660 * bug fix: fix random memory faults related to interrupts on sparc
661 * bug fix: fix deadlocks related to starting threads
662 * bug fix: fix deadlines on locks on futex platforms
663 * bug fix: restore errno in signal handlers
664 * bug fix: fix deadlocks related to hash tables
665 * bug fix: fix deadlocks in pcl
667 changes in sbcl-1.0.25 relative to 1.0.24:
668 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
669 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
670 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
671 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
672 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
673 better name and does not return values so stale on multiprocessor systems.
674 Also, HOLDING-MUTEX-P was added for about the only sane usage of
676 * improvement: unithread builds keep track of MUTEX-VALUE.
677 * improvement: reading from a TWO-WAY-STREAM does not touch the output
678 stream anymore making it thread safe to have a concurrent reader and
679 a writer, for instance, in a pipe.
680 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
681 arguments, making compiler-macros for SETF-functions able to inspect
682 their constant arguments.
683 * improvement: COMPILE-FILE reports times with millisecond accuracy
684 (thanks to Luis Oliveira)
685 * optimization: CHAR-CODE type derivation has been improved, making
686 TYPEP elimination on subtypes of CHARACTER work better. (reported
687 by Tobias Rittweiler, patch by Paul Khuong)
688 * bug fix: setting alien structure fields of type struct by value now
689 computes the right offset for the memory copy.
690 * bug fix: compilation problem involving inlined calls to aliens with
691 result type VOID. (reported by Ken Olum)
692 * bug fix: #235a; sequential inline expasion in different policies no
693 longer reuses the functional from the previous expansion site.
694 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
695 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
696 * bug fix: named ENUMs in multiply-referenced alien record types no longer
697 cause an implied type redefinition. Regression from 1.0.21.29.
698 * bug fix: sign-extension of small signed return values now works with C
699 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
700 * improvements to the Windows port:
701 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
702 Westfold, thanks to Rudi Schlatte)
704 changes in sbcl-1.0.24 relative to 1.0.23:
705 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
706 vector of a multidimensional SIMPLE-ARRAY.
707 * new feature: the system now signals a continuable error if standard
708 readtable modification is attempted. (thanks to Tobias Rittweiler)
709 * new feature: DIRECTORY has been extended with a non-standard keyword
710 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
711 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
712 has been robustified and documented better. (thanks to Robert Goldman)
713 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
714 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
715 * tradeoff: constant FORMAT control strings are now compiled unless
716 SPACE > SPEED (previously only when SPEED > SPACE.)
717 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
719 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
721 * bug fix: lexical type declarations are now correctly reported by
722 SB-CLTL2. (reported by Larry D'Anna)
723 * bug fix: STRING-TO-OCTETS did not handle :START properly when
724 using UTF-8 as external format. (thanks to Luis Oliveira)
725 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
726 are signalled correctly. (thanks to Stas Boukarev)
727 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
728 designator. (thanks to Tobias Rittweiler)
729 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
730 designator, and returns T instead of the function. (thanks to
732 * bug fix: direct superclasses of STANDARD-CLASS and
733 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
734 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
735 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
736 when no class with the named slot yet exists no longer causes a
737 compile-time style-warning.
738 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
739 in safe code. (reported by Didier Verna)
740 * bug fix: #430; nested structure constructors can stack allocate.
741 * bug fix: on some 64-bit platforms dynamic space size was truncated
742 to #xffff0000 bytes. (reported by Benjamin Lambert)
743 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
744 REPL unusable. (reported by Daniel Herring)
745 * bug fix: return values of READ-SEQUENCE did not take :START into
746 account on file streams, regressions since 1.0.12.22. (reported by
747 Thomas Russ, patch by Paul Khuong)
748 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
749 method specializer used to confuse permuation vector optimization.
750 * bug fix: system inserted bogus implicit type declarations for local
751 special variables in DEFMETHOD bodies.
752 * bug fix: #354; duplicated frames in backtraces due to
753 non-tail-call-optimized XEPs to functions with return type NIL
755 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
756 initializes structure object slots according to DEFSTRUCT initforms,
757 and DEFSTRUCT forms :INCLUDEind structure classes defined using
758 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
759 (reported by Bruno Haible and Stephen Wilson)
760 * bug fix: #395; fill-pointer output streams used now support
761 element-type BASE-CHAR as well.
762 * bug fix: compiler error when attempting to derive return value of
763 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
765 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
767 * bug fix: Mac OS X binaries should now be portable between Leopard
770 changes in sbcl-1.0.23 relative to 1.0.22:
771 * enhancement: when disassembling method functions, disassembly
772 for the associated fast function is also produced.
773 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
775 * optimization: printing with *PRINT-PRETTY* true is now more
776 efficient as long as the object being printed doesn't require
777 special handling by the pretty printer.
778 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
779 now interact correctly with type declarations.
780 * partial bug fix: PCL detects infinite recursion during wrapper
781 validation. (thanks to Attila Lendvai)
782 * bug fix: #426; nested function calls are inlined properly.
783 Previously if FOO was an inline function, in calls of the form
784 (FOO (FOO ...)) the outer call was not inlined.
785 * bug fix: long long arguments passed in registers to alien
786 functions on PowerPC Linux and NetBSD are now handled correctly
787 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
789 changes in sbcl-1.0.22 relative to 1.0.21:
790 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
791 for the shared object in the current directory, but passes the native
792 namestring of the designated pathname to the operation system's shared
793 object loading function as-it.
794 * minor incompatible change: --disable-debugger toplevel option now takes
795 effect before processing of initialization files and --eval or --load
797 * new feature: new commandline argument: --script, which supports
798 shebang lines. See documentation for details. (based on work by
800 * new feature: SAVE-LISP-AND-DIE can save current values of
801 --dynamic-space-size and --control-stack-size in the executable core,
802 causing it to skip normal runtime option processing. See documentation
803 for details. (thanks to Zach Beane)
804 * enhancement: inoccous calls to EVAL or generic functions dispatching
805 on subclasses of eg. STREAM no longer cause compiler notes to appear.
806 * enhancement: the system no longer resignals errors from --load and
807 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
808 associated with the original error to be lost. (thanks to Ariel
810 * enhancement: :DONT-SAVE keyword argument has been added to
811 LOAD-SHARED-OBJECT for controlling interaction with
812 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
813 the effects of an earlier LOAD-SHARED-OBJECT call.
814 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
815 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
816 provided. (reported by Cedric St-Jean)
817 * bug fix: circularity handling in the reader did not treat raw
818 structure slots correctly. (reported by Cedric St-Jean)
819 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
820 file descriptors when there were none.
821 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
822 was broken. (reporteed by Willem Broekema)
823 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
824 pathnames without a directory.
825 * bug fix: COMPILE-FILE did not warn about undefined variable
826 references at toplevel, and LOAD of the resulting fasl did
828 * bug fix: functions with non-required arguments used to end up with
829 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
830 * bug fix: redefining a function with non-required arguments didn't
831 update the system's knowledge about its call signature properly.
832 * bug fix: fixed #431; incompatible alien record type redefinitions
833 are detected and handled. (reported by Neil Haven)
834 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
835 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
837 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
838 after alien stack frames.
839 * bug fix: strings passed to mk{s,d}temp lacked null termination
841 changes in sbcl-1.0.21 relative to 1.0.20:
842 * new feature: the compiler is able to track the effective type of a
843 generic function across method addition and removal.
844 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
845 appropriately typed structure slots without locking.
846 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
847 information like those gathered by TIME using a programming-friendly
849 * new feature: TIME reports time taken even if the form performs a
850 non-local transfer of control.
851 * enhancement: reduced conservativism on GENCGC platforms: on
852 average 45% less pages pinned (measured from SBCL self build).
853 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
854 mutate constant symbols or violate declaimed type of the symbol.
855 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
856 sleeping on the semaphore in heavily contested semaphores.
857 * bug fix: semaphores and condition variables were not interrupt
859 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
860 owned by other threads anymore.
861 * bug fix: FIND on lists called KEY outside the specified
862 subsequence. (reported by budden)
863 * bug fix: LOG doesn't use single-float intermediate results when
864 given mixed integer and double-float arguments, leading to better
865 precision. (reported by Bob Felts)
866 * bug fix: LOG with base zero returned values of inconsistent type.
868 changes in sbcl-1.0.20 relative to 1.0.19:
869 * minor incompatible change: OPTIMIZE qualities
870 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
871 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
872 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
873 * documentation: some slot access efficiency guidelines have been
874 added to the user manual.
875 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
876 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
877 as ASSOC and MEMEBER.
878 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
879 to more efficient EQ-comparison versions more often.
880 * optimization: enhanced derivation of DOLIST iteration variable type
882 * optimization: constant folding of simple (LIST ...) forms as DOLIST
884 * optimization: runtime lookup of function definitions can be
885 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
886 * optimization: compiler is able to derive the return type of
887 (AREF (THE STRING X) Y) as being CHARACTER.
888 * optimization: CLRHASH on empty hash-tables no longer does pointless
889 work. (thanks to Alec Berryman)
890 * optimization: REPLACE deftransforms don't punt when :START1 or
892 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
893 no longer emits a code deletion note. (reported by Andrew
895 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
896 functions with an odd number of &OPTIONAL arguments, a &REST
897 argument, and one or more &KEY arguments at the call site.
898 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
899 arguments appeared at call sites as well.
900 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
901 READ-LINE &co can no longer read from them afterwards. (reported
903 * bug fix: fixed #427: unused local aliens no longer cause compiler
904 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
906 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
907 alien-stack leakage. (reported by Andy Hefner)
908 * bug fix: PROGV signals an error when an attempt to violate declared
909 type of a variable or bind a constant is made.
910 * bug fix: SET signals an error when an attempt to violate declared
911 type of a variable is made.
912 * bug fix: restart computation during the execution of a restart
913 test function no longer causes infinite recursion. (reported by
915 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
916 signals an error. (thanks to Pierre Mai)
917 * bug fix: EXPORT left symbol unexported in conflict situations.
918 (thanks to Michael Weber)
919 * bug fix: correctly handle name conflicts involving CL:NIL.
920 (thanks to Michael Weber)
921 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
922 conflicts arising from USEing package with conflicting symbols
923 correctly. (thanks to Michael Weber)
925 changes in sbcl-1.0.19 relative to 1.0.18:
926 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
927 warnings that go otherwise unhandled will be muffled if they are
928 of the type that's the value of this variable.
929 * optimization: stack allocation is slightly more efficient on x86
931 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
932 where a raw slot always is initialized using the initform whose
933 type is not know sufficiently well a compile-time are now compiled
934 correctly. (reported by John Morrison)
935 * bug fix: compiler no longer makes erronous assumptions in the
936 presence of non-foldable SATISFIES types.
937 * bug fix: stack analysis missed cleanups of dynamic-extent
938 arguments in non-let-converted calls to local functions.
939 * improvements to the Windows port:
940 ** adjusted address spaces for building on both Win32 and
941 Win64. (thanks for John Connors)
942 * fixed some bugs revealed by Paul Dietz' test suite:
943 ** interval arithmetic during type derivation used inexact integer
944 to single-float coercions.
945 ** arithmetic operations involving large integers and single
946 floats give the same results in compiled and interpreted code.
947 ** deriving the result type of COERCE no longer signals an error
948 if the derived type of the second argument is a MEMBER type
949 containing invalid type specifiers.
950 ** ADJOIN with constant NIL as second argument works correctly.
951 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
953 changes in sbcl-1.0.18 relative to 1.0.17:
954 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
955 profiles only the current thread.
956 * minor incompatible change: changes to SYMBOL-VALUE of constants
957 defined with DEFCONSTANT now signal an error.
958 * enhancement: SB-SPROF now has support for wallclock profiling,
959 and is also able to profile specific threads. REPORT output
960 has also additional sorting options.
961 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
963 * optimization: structure allocation has been improved
964 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
965 ** out of line constructors are ~10% faster.
966 ** inline constructors are ~15% faster.
967 ** inline constructors are capable of dynamic extent allocation
968 (generally on x86 and x86-64, in some cases on other platforms
970 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
972 * optimization: file compiler is now able to coalesce non-circular
973 lists, non-base strings, and bit-vectors. Additionally, constants
974 are never referenced through SYMBOL-VALUE at runtime.
975 * optimization: code defining methods on PRINT-OBJECT (and other
976 generic functions in the COMMON-LISP package) now loads faster.
977 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
979 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
980 fasl is now deleted. (reported by Attila Lendvai)
981 * bug fix: READ-LINE always returned NIL for the last line in files.
982 (reported by Yoshinori Tahara)
983 * bug fix: more accurate disassembly annotations of foreign function
984 calls. (thanks to Andy Hefner)
985 * bug fix: trimming non-simple strings and non-string string
986 designators when the there is nothing to trim works properly.
987 (thanks to James Knight)
988 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
989 (thanks to Travis Cross)
990 * fixed some bugs revealed by Paul Dietz' test suite:
991 ** NIL is a valid function name (regression at 1.0.13.38)
992 ** FILL on lists was missing its return value (regression at 1.0.12.27)
993 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
994 fill pointers properly (regression at 1.0.12.23)
995 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
996 displacement indices properly (regression at 1.0.12.23)
998 changes in sbcl-1.0.17 relative to 1.0.16:
999 * temporary regression: user code can no longer allocate closure
1000 variable storage on stack, due to bug 419 without explicitly
1001 requesting it. Please consult sbcl-devel for advice if you need to
1002 use this feature in the meanwhile.
1003 * new feature: runtime argument --control-stack-size can be used to
1004 adjust thread default control stack size.
1005 * enhancement: improved TIME output
1006 ** all times are reported using the measured accuracy (milliseconds
1007 for real and GC times, microseconds for everything else.)
1008 ** processor cycle counts on x86 and x86-64.
1009 ** interpreted forms are counted for both evaluator modes.
1010 ** number of lambdas converted by the compiler is reported.
1011 ** CPU percentage report (computed from real and total run time.)
1012 ** more comprehensive run time reporting, using a condenced format
1013 ** interperted form, lambda, and page fault counts are omitted
1015 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1017 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1018 * optimization: two argument forms of LAST are upto ~10% faster
1019 in normal SPEED policies.
1020 * optimization: NCONC no longer needs to heap cons its &REST list
1021 in normal SPEED policies.
1022 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1023 to Sidney Markowitz)
1024 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1025 regression since 1.0.9.1. (thanks to Eric Marsden)
1026 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1027 since 1.0.15.36. (thanks to Paul Khuong)
1028 * bug fix: LAST when always returned the whole list when given a bignum
1029 as the second argument.
1030 * bug fix: dynamic extent allocation of nested lists and vectors
1031 could leak to otherwise accessible parts.
1032 * bug fix: invalid optimization of heap-allocated alien variable
1034 * bug fix: fasl header checking is less vulnerable to different
1035 platform word lengths.
1036 * bug fix: more correct assembler syntax for GNU binutils
1037 2.18.50.0.4 support. (thanks to Marijn Schouten)
1038 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1040 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1041 declarations) successfully. (reported by Attila Lendvai)
1043 changes in sbcl-1.0.16 relative to 1.0.15:
1044 * minor incompatible change: revert the changes to sb-posix's error
1045 signaling added in 1.0.14.
1046 * minor incompatible change: change PROBE-FILE back to returning
1047 NIL whenever we can't get a truename, as was the case before 1.0.14.
1048 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1049 inherits from ERROR instead of just CONDITION.
1050 * new feature: SB-INTROSPECT can provide source locations for instances
1051 as well. (thanks to Tobias Rittweiler)
1052 * optimization: binding special variables now generates smaller code
1053 on threaded platforms.
1054 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1055 and cases where no :TEST is given but the compiler can infer that
1056 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1057 * optimization: better LOGNOT on fixnums.
1058 * optimization: modular arithmetic for a particular requested width
1059 is implemented using a tagged representation unless a better
1060 representation is available.
1061 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1062 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1063 for wellformedness and returns a specialized vector. (reported by
1064 Francois-Rene Rideau)
1065 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1066 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1067 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1068 unscheduling timer at the same time as another timer fires.
1069 * bug fix: don't reschedule timers for dead threads.
1070 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1071 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1072 bogus errors if select() was interrupted.
1073 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1075 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1076 * enhancement: cleaner backtraces for interactive interrupts, as
1077 well as other cases where the interesting frames used to be
1078 obscured by interrupt handling frames.
1079 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1080 now supported, and tracing a whole package using (TRACE "FOO") now
1081 traces SETF-functions as well.
1082 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1083 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1084 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1085 * unreadably printed representation of hash-tables now includes
1087 * bug fix: partially fixed #188: type propagation from assignments
1088 is now more efficient.
1089 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1090 'DOUBLE-FLOAT) are not flushable.
1091 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1092 full address of the object, and none of the tag bits.
1093 * bug fix: readably printing hash-tables now respects other printer
1094 control variables. (reported by Cedric St-Jean)
1095 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1096 keyword with MAKE-HASH-TABLE.
1097 * bug fix: export SB-POSIX:MKSTEMP.
1098 * bug fix: SORT was not interrupt safe.
1099 * bug fix: XREF accounts for the last node of each basic-block as
1101 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1102 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1103 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1104 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1105 create obsolete instances in the case of redefinition or
1106 obsoletion of a superclass. (thanks to Andy Hefner)
1107 * bug fix: Support for the Alpha architecture has been revived; it had
1108 suffered somewhat from lack of maintenance since sbcl-1.0.
1109 * improvements to the Windows port:
1110 ** The system detects the codepage to use at startup, instead of
1111 using the value from the saved core. (thanks to Kei Suzuki)
1113 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1114 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1115 (see documentation for details.)
1116 * revived support for OpenBSD (contributed by Josh Elsasser)
1117 * partially fixed bug #108: ROOM no longer suffers from occasional
1118 (AVER (SAP= CURRENT END)) failures.
1119 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1120 bodies no longer cause a WARNING to be signalled. (reported by
1122 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1123 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1124 the bug in TRUNCATE.) (reported by Michael Weber)
1125 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1126 no samples. (reported by Andy Hefner)
1127 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1128 no longer appear as (NIL ...) frames in backtraces.
1129 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1130 is now actually exported from SB-EXT as documented. (reported by
1132 * bug fix: sb-aclrepl now correctly understands how to inspect
1133 single-floats on 64-bit platforms where single-floats are not boxed.
1134 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1135 yet been finalized. (reported by Levente Meszaros)
1136 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1137 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1138 SBCL-specific optimize qualities.
1140 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1141 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1142 an executable in the search path, and does so in the child
1143 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1144 been removed; it can be found in the CVS history, for somebody who
1145 needs that search behavior (see the manual).
1146 * minor incompatible change: compiler policy re. weakening type
1147 checks has changed: now type checks are weakened only if SAFETY < 2
1149 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1150 unparsing of directory pathnames as files. Analogously,
1151 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1152 filename to parse into a directory pathname.
1153 * enhancement: implicit generic function creation now signals a
1154 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1155 users can bind handlers for and muffle around calls to LOAD.
1156 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1157 to be used (using the default stream external format), and allows
1158 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1159 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1160 strings and vectors whose element-type or simplicity is not fully
1161 known at compile-time.
1162 * optimization: STRING-TRIM and related functions no longer allocate
1163 a new string when no trimming needs to be performed. These functions
1164 are also faster than before when the input string has been declared
1166 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1167 * optimization: READ-LINE is significantly faster for files containing
1169 * optimization: non-open coded uses of character comparison operators
1170 (e.g. char=) no longer cons when called with more than one parameter
1171 on platforms supporting dynamic-extent allocation.
1172 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1173 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1174 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1176 * bug fix: some sequence functions elided bounds checking when
1178 * bug fix: too liberal weakening of union-type checks when SPEED >
1180 * bug fix: more bogus fixnum declarations in ROOM implementation
1183 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1184 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1185 :SYNCHRONIZED argument, which makes the hash-table safe for
1186 concurrent accesses (but not iteration.) See also:
1187 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1188 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1189 * optimization: CONCATENATE on strings is an order of magnitude faster
1190 in code compiled with (> SPEED SPACE).
1191 * optimization: SUBSEQ is ~50% faster on lists.
1192 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1193 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1194 END is smaller then START.
1195 * bug fix: SB-PROFILE will no longer report extra consing for nested
1196 calls to profiled functions.
1197 * bug fix: ROOM implementation had bogus fixnum declarations which
1198 could cause type-errors when calling ROOM on large images.
1199 * bug fix: if file compilation is aborted, the partial fasl is now
1200 deleted, and COMPILE-FILE returns NIL as the primary value.
1201 * bug fix: number of thread safety issues relating to SBCL's internal
1202 hash-table usage have been fixed.
1203 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1204 be returned from its body when the values were being returned
1205 using unknown-values return convection and the W-P-O was wrapped
1206 inside an UNWIND-PROTECT.
1207 * bug fix: sb-posix should now compile again under Windows, enabling
1208 slime to work again.
1210 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1211 * incompatible change: hash-table accessor functions are no longer
1212 automatically protected by locks. Concurrent accesses on the same hash-table
1213 from multiple threads can give inconsistent results or even corrupt the
1214 hash-table completely. Multi-threaded applications should do their own
1215 locking at the correct granularity. In the current implementation it is
1216 still safe to have multiple readers access the same table, but it's not
1217 guaranteed that this property will be maintained in future releases.
1218 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1219 and will signal an error at runtime.
1220 * enhancement: SB-THREAD package now exports a semaphore interface.
1221 * enhancement: CONS can now stack-allocate on x86 and
1222 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1224 * enhancement: nested lists can now be stack allocated on
1225 platforms providing stack allocation support.
1226 * enhancement: dynamic-extent support has been extended to support
1227 cases where there are multiple possible sources for the stack
1229 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1230 if the mutex is uncontested on Linux.
1231 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1232 as specified by the CLHS. (thanks to Tobias Rittweiler)
1233 * bug fix: NaN comparison now works on x86-64.
1234 * bug fix: CLOSE :ABORT T on a stream with pending output now
1236 * bug fix: instances of non-standard metaclasses using standard
1237 instance structure protocol sometimes missed the slot type checks
1239 * bug fix: known functions can be inlined in high-debug code.
1241 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1242 * minor incompatible change: the MSI installer on Windows no longer
1243 associates .lisp and .fasl files with the installed SBCL.
1244 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1245 on Windows. (thanks to Luis Oliviera)
1246 * new feature: SB-CLTL2 contrib module now implements
1247 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1248 * optimization: scavenging weak pointers is now more efficient,
1249 requiring O(1) instead of O(N) per weak pointer to identify
1250 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1251 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1252 method bodies using constant slot-names when the first argument is
1253 a specializer parameter for the method.
1254 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1255 names, when the class of the instance is a direct instance
1256 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1257 as slow as the constant slot-name case.)
1258 * optimization: member type construction is now O(N) instead
1260 * optimization: UNION and NUNION are now O(N+M) for large
1261 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1263 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1264 now more readable in environments like Slime which display it.
1265 (thanks to Tobias C. Rittweiler)
1266 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1267 was able to infer the correct argument type for the object on which
1268 the CAS operation was being performed.
1269 * bug fix: copy propagation interfered with parallel assignment
1270 semantics in local calls. (reported by Paul Khuong)
1271 * bug fix: the signed modular fixnum shift compiled to wrong code on
1272 x86 and x86-64. (spotted by a slight modification to some of
1275 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1276 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1277 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1278 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1280 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1281 and generic function now print the object identity for anonymous
1282 instances. (thanks to Attila Lendvai)
1283 * enhancement: as an extension to MOP, SBCL now supports SETF of
1284 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1285 (thanks to Attila Lendvai)
1286 * enhancement: sb-cover has an alternate annotation mode which puts
1287 the form annotations at the car of the form, instead of annotating
1288 it completely. The benefit of this mode is that it shows better
1289 which forms were instrumented by the compiler.
1290 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1291 by printer control variables. (reported by Dan Corkill)
1292 * bug fix: system leaked memory when delayed output was performed by
1293 the OS in smaller chunks then expected. (thanks to David Smith)
1294 * bug fix: system leaked memory when file streams were not closed
1296 * bug fix: large objects written to slow streams that were modified
1297 after the write could end up with the modified state written to
1298 the underlying file descriptor.
1299 * bug fix: multiple threads operating in parallel on the same stream
1300 could cause buffer-overflows.
1301 * bug fix: source location information is stored correctly
1302 (broken since 1.0.6). This bug would generally show up as the
1303 Slime debugger highlighting the wrong form when the sldb-show-source
1305 * bug fix: Branch forms are again annotated as branches in the sb-cover
1307 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1308 on x86-64. (reported by Gregory Vanuxem)
1309 * bug fix: EQUALP could return wrong results for structures with raw
1310 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1311 word). (reported by Vjacheslav Fyodorov)
1312 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1315 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1316 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1317 atomic compare-and-swap operations on threaded platforms.
1318 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1319 allows assigning a global minimum value to optimization qualities
1320 (overriding proclamations and declarations).
1321 * enhancement: closed over variables can be stack-allocated on x86
1323 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1325 * optimization: slot definition lookup is now O(1). This speeds up
1326 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1327 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1328 * optimization: ASSOC and MEMBER can now be open-coded for all
1329 combinations of keyword arguments when second argument is constant
1330 and SPEED >= SPACE. In other cases a specialized version is
1332 * bug fix: using obsoleted structure instances with TYPEP and
1333 generic functions now signals a sensible error.
1334 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1335 (reported by Kristoffer Kvello)
1336 * bug fix: backtrace construction is now more careful when making
1337 lisp-objects from pointers on the stack, to avoid creating bogus
1338 objects that can be seen by the GC.
1339 * bug fix: defaulting of values in contexts expecting more than 7
1340 variables now works on x86-64. (reported by Christopher Laux)
1341 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1343 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1344 as the property-list of a symbol.
1345 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1346 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1347 situations requested, are once again file-compileable. (reported
1350 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1351 * MOP improvement: support for user-defined subclasses of
1352 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1353 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1354 the expansion of DEFMETHOD, is responsible for generating a form
1355 which creates a list of specializers when evaluated. Additional
1356 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1357 debugging and introspective support.
1358 * minor incompatible change: the (unsupported) spinlock interface
1359 has changed: free spinlock now has the value NIL, and a held spinlock
1360 has the owning thread as its value.
1361 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1362 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1364 * enhancement: name of a socket-stream is now "a socket" instead of
1365 "a constant string".
1366 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1367 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1368 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1369 for generic functions. (Thanks to Tobias C. Rittweiler)
1370 * optimization: bignum printing speed has been improved by 20-40%
1371 (depending on the bignum size.)
1372 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1374 * bug fix: the cache used by the CLOS to store precomputed effective
1375 methods, slot offsets, and constant return values is now thread and
1377 * bug fix: generic function dispatch function updating is now thread
1378 and interrupt safe (in the sense that the known issues have been
1380 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1381 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1382 * bug fix: asdf systems with dependencies to the SB-POSIX or
1383 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1384 * bug fix: interrupt safety of applicable method computation has been
1387 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1388 * new contrib: sb-cover, an experimental code coverage tool, is included
1389 as a contrib module.
1390 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1391 significantly faster.
1392 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1393 produce more efficient code on x86-64 if the compiler can determine
1394 that (+ INDEX <constant>) does not require a bounds check and FOO
1395 has an element type at least 8 bits wide.
1396 * enhancement: a new, experimental synchronous timeout facility is
1397 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1398 * enhancement: when a symbol name conflict error arises, the
1399 conflicting symbols are always printed with a package prefix.
1400 (thanks to Kevin Reid)
1401 * enhancement: stepping is now once again supported on the SPARC and
1402 MIPS platforms. (It is also now more likely to work on CheneyGC
1404 * enhancement: sb-sprof can now also track and report accurate call
1406 * bug fixes: the treatment of non-standard subclasses of
1407 SB-MOP:SPECIALIZER is more correct.
1408 * incompatible change: PURIFY no longer copies the data from the
1409 dynamic space into the static and read-only spaces on platforms
1410 that use the generational garbage collector
1411 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1413 * bug fix: GC race condition occasionally resulting in crashes with
1414 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1416 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1418 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1419 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1420 * bug fix: an asynchronous interrupt could previously leave the
1421 system running with GC inhibited.
1422 * bug fix: a DECLARE form evaluated at top-level now causes an error
1423 rather than silently (or verbosely) returning NIL.
1424 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1425 result in a error being signalled due to source form lookup errors.
1426 (reported by Peter Graves)
1428 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1429 * incompatible change: removed writer methods for host-ent-name,
1430 host-ent-addresses -- changing the values did not update the DNS
1432 * minor incompatible change: changed experimental JOIN-THREAD interface
1433 * documentation: the manual now lists reader and writer methods
1434 in class slot documentation sections. (thanks to Richard M Kreuter)
1435 * documentation: unwinding from asyncronous events has been
1436 documented as unsafe.
1437 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1438 in multithreaded application code.
1439 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1440 platforms. (thanks to James Anderson for the optimization hint)
1441 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1443 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1444 variants no longer cons.
1445 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1446 their NOT- variants no longer cons.
1447 * optimization: EQUAL hash tables no longer use SXHASH for objects
1448 of all data types, but instead use an EQL hash for types for which
1449 EQUAL is the same as EQL.
1450 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1451 are significantly faster.
1452 * optimization: new STRING-OUTPUT-STREAM implementation is much
1453 faster for large outputs and conses 30% less on average.
1454 * enhancement: XREF information is now collected for references made
1455 to global variables using SYMBOL-VALUE and a constant argument.
1456 * enhancement: SIGINT now causes a specific condition
1457 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1458 * bug fix: FILE-POSITION used to signal an error in some cases where
1459 ANSI requires it to return NIL.
1460 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1461 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1462 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1464 * bug fix: bad type declaration in the CLOS implementation has
1465 been fixed. (reported by James Anderson)
1466 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1467 (thanks to Lutz Euler)
1468 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1469 required by the CLHS. (reported by Samium Gromoff)
1470 * bug fix: dead unbound variable references now signal an error.
1471 (reported by Marco Monteiro)
1472 * bug fix: / with an unused value was being deleted in safe code.
1473 (thanks to Marco Monteiro and Kevin Reid)
1474 * bug fix: number of characters that can be written onto a single
1475 line in a file is unlimited.
1476 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1477 been fixed by inhibiting interrupts for when GC is disabled.
1478 * bug fix: some interrupt safety issues with GETHASH, (SETF
1479 GETHASH), CLRHASH and REMHASH have been fixed.
1480 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1481 specifier no longer causes infinite recursion.
1482 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1483 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1484 * bug fix: an &environment argument with the correct variable information
1485 is passed to macros that are expanded during byte compilation.
1486 (reported by Samium Gromoff)
1487 * bug fix: a logic error was causing the hash function for bignums to
1488 have excessive amounts of collisions. (reported by Faré Rideau)
1489 * bug fix: modifying the contents of an array could change the return
1490 value of SXHASH on that array, which is only allowed for strings
1491 and bit vectors. (bug introduced in 0.9.16)
1492 * improvement: the x86-64/darwin port now passes all tests (except
1493 for the debugger tests) but should still be considered
1494 experimental until this is fixed.
1495 * improvement: a style-warning is signaled for CASE (etc) clauses with
1496 duplicate keys. (thanks to Kevin Reid)
1497 * improvement: macos/x86 and macos/x86-64 now use mach exception
1498 handlers for dealing with illegal instructions (for trapping and
1499 error handling) and memory protection violations (for GC).
1501 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1502 * new platform: experimental support for x86-64/darwin (MacOS).
1503 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1504 and getnameinfo sockets functions are used instead of gethostbyaddr
1505 and gethostbyname, on platforms where the newer functions are available.
1506 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1508 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1509 don't print the startup banner, but behave as if --noinform was passed
1510 as a command line argument. (thanks to Kevin Reid)
1511 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1512 * optimization: code using alien values with undeclared types is much faster.
1513 * optimization: the compiler is now able to open code SEARCH in more cases.
1514 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1515 * bug fix: using standardized COMMON-LISP special variables as loop
1516 variables no longer signals bogus package lock violations. (reported
1518 * bug fix: declaring local loop variables to be of a range-limited type
1519 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1520 (reported by Andras Simon)
1521 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1522 bugs remain on x86-64.)
1523 * bug fix: the #= and ## reader macros now interact reasonably with
1524 funcallable instances.
1525 * bug fix: type-checks for function arguments were compiled using the
1526 compiler policy settings of the wrong lexical environment (in 1.0.2
1528 * bug fix: SHADOW accepts characters as string designators, as required
1529 by the spec (thanks to Eric Marsden)
1530 * bug fix: fixed GC safety issues when foreign functions are called with
1531 non-base strings as arguments
1532 * bug fix: more consistent error output for fatal-compiler-warnings, like
1534 * bug fix: functions with proper names were showing up as NIL in
1535 backtraces (reported by Edi Weitz, regression in 1.0.2)
1537 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1538 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1539 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1540 produce more efficient code on the x86 if the compiler can determine
1541 that (+ INDEX <constant>) does not require a bounds check and FOO
1542 has an element type at least 8 bits wide.
1543 * bug fix: references to undefined variables are handled the same way
1544 in toplevel forms as in the normal compiler
1545 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1547 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1548 (thanks to Jon Buller)
1549 * improvement: faster compilation times for complex functions
1550 * improvement: added readlink support to SB-POSIX (thanks to Richard
1553 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1554 * improvement: experimental support for mach exception handling on
1555 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1557 * improvement: support for GBK external format.
1558 (thanks to Chun Tian (binghe))
1559 * improvement: the debugger now displays variables that have been closed
1560 over, in code compiled with (DEBUG 2) or higher
1561 * improvement: support for executable cores on NetBSD (thanks to
1563 * new feature: added a RESTART-FRAME debugger command
1564 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1565 be used to provide an implementation for FILE-POSITION on Gray streams
1566 (thanks to Eric Marsden)
1567 * new feature: add syslog, openlog and closelog support to SB-POSIX
1568 (thanks to Richard Kreuter)
1569 * optimization: the function call overhead in code compiled with
1570 a high DEBUG optimization setting is significantly
1571 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1572 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1573 (thanks to Tony Martinez)
1574 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1575 evaluated once (reported by Kevin Reid)
1576 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1577 works again (thanks to Kilian Sprotte)
1578 * bug fix: an error is signaled for tagbodies with duplicate tags
1579 (thanks to Stephen Wilson)
1580 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1581 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1582 stack frames from alien callbacks.
1583 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1584 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1585 65k pages (thanks to David Woodhouse)
1586 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1588 changes in sbcl-1.0.1 relative to sbcl-1.0:
1589 * new platform: FreeBSD/x86-64, including support for threading.
1590 * new feature: the compiler stores cross-referencing information
1591 about function calls (who-calls), macroexpansion (who-macroexpands)
1592 and special variables (who-binds, who-sets, who-references) for code
1593 compiled with (< SPACE 3). This information is available through the
1594 sb-introspect contrib.
1595 * new feature: users may subclass SEQUENCE, and have instances of
1596 these classes interoperate with standard Common Lisp functions if
1597 a number of methods are defined. (This feature is experimental
1598 and the interface subject to change based on feedback from SBCL
1599 users and the general community)
1600 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1601 x86/x86-64, rather than the previous fixed depth of 8
1602 * improvement: another pthread back-end of mutex "pthread-futex".
1603 * bug fix: non-ascii command-line arguments are processed correctly
1604 (thanks to Yaroslav Kavenchuk)
1605 * bug fix: non-required arguments were not passed correctly when a method
1606 defined using DEFMETHOD was called from a mop-generated method using
1607 CALL-NEXT-METHOD (reported by Pascal Costanza)
1608 * bug fix: recursion is now permitted in accessors through
1609 SLOT-UNBOUND. (reported by Pascal Costanza)
1610 * bug fix: an error was signaled at startup if the HOME environment
1611 variable was defined, but had an empty value (reported by Peter Van Eynde)
1612 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1613 signal a PROGRAM-ERROR, not a BUG.
1614 * bug fix: SB-POSIX:READDIR works when built with large file support.
1615 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1617 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1618 for better automatic indentation support. (thanks to Matt Pillsbury)
1619 * optimization: loading generic functions no longer takes O(n^2) time,
1620 proportional to the amount of methods in the generic function
1621 (reported by Todd Sabin and Jeremy Brown)
1622 * optimization: the FIND and POSITION family of sequence functions
1623 are significantly faster on arrays whose element types have been
1625 * improvements to the Windows port:
1626 ** Intermittent heap corruption problems have been fixed. (thanks
1627 to Alastair Bridgewater)
1628 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1630 ** Lisp is able to unwind foreign exception frames from alien
1631 callbacks. (thanks to Alastair Bridgewater)
1633 changes in sbcl-1.0 relative to sbcl-0.9.18:
1634 * improvement: experimental support for threading on FreeBSD/x86.
1635 (thanks to NIIMI Satoshi)
1636 * improvement: runtime option --dynamic-space-size can be used
1637 to set the size of the dynamic space reserved on startup.
1638 * improvement: floating point modes in effect are now saved in
1639 core, and restored on startup.
1640 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1641 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1642 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1643 threads are not running after *SAVE-HOOKS* have run.
1644 * improvement: writes to CLOS instance slots are type-checked in code
1645 compiled with (SAFETY 3)
1646 * improvement: floating-point exception handling on FreeBSD (thanks to
1648 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1649 (thanks to Zach Beane)
1650 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1652 * improvement: added support for the Shift-JIS external format.
1653 (contributed by NIIMI Satoshi)
1654 * improvement: callbacks are supported on Linux/PPC. (thanks to
1656 * bug fix: compiler bug triggered by a (non-standard) VALUES
1657 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1658 * bug fix: file compiler no longer confuses validated and already
1659 dumped structurres. (reported by Kaersten Poeck)
1660 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1661 fill-pointer signals a type-error as required. (thanks to
1663 * bug fix: disassemly of funcallable instances works.
1664 * bug fix: single stepping on PPC.
1665 * bug fix: fix thread-safety problems in the type system (generally
1666 manifesting as nonsensical errors like "STRING is a bad type specifier
1667 for sequences" or "The value 1 is not of type FIXNUM")
1668 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1669 (reported by Josip Gracin)
1670 * bug fix: an error is signaled for attempts to displace arrays with
1671 incompatible element types (thanks to Mario Mommer)
1672 * bug fix: more correct handling of wide characters in debug info
1673 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1674 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1675 and don't cause extra consing
1676 * optimization: MAP and MAP-INTO are significantly faster on vectors
1677 whose elements types have been declared.
1678 * Improvements to SB-SPROF:
1679 ** Support for allocation profiling
1680 ** Reduced profiling overhead, especially for long profiling runs
1681 * Improvements to the Windows port:
1682 ** floating point exceptions are now reported correctly.
1683 ** stack exhaustion detection works partially.
1684 ** more accurate GET-INTERNAL-REAL-TIME.
1685 ** better RUN-PROGRAM behaviour in case of errors in the child
1687 ** PROBE-FILE now simplifies pathnames correctly.
1688 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1689 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1690 1st 1970 (although time timezone data will be unreliable).
1691 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1693 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1694 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1695 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1697 * bug fix: two potential GC deadlocks affecting threaded builds.
1698 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1699 returns T (reported by Anton Kazennikov)
1700 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1701 with non-variable places
1702 * bug fix: remove a race condition in the setting of
1703 funcallable-instance functions, this should make threaded CLOS
1704 code more stable against memory faults.
1705 * bug fix: corruption of specials when unbinding is interrupted by an
1706 asynchronous unwind (reported by Hannu Koivisto)
1707 * improvement: the debugger will now also display local variables that
1708 are only used once, for code compiled with a DEBUG optimization quality
1711 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1712 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1713 * incompatible change: External-format support for FFI calls. The
1714 SB-ALIEN:C-STRING no longer implies an ASCII
1715 external-format. Instead the string is subject to external-format
1716 conversion. Additionally return values of type SB-ALIEN:C-STRING
1717 are by default of type (SIMPLE-ARRAY CHARACTER), not
1718 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1719 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1720 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1721 * incompatible change: SB-EXT package no longer contains the
1722 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1723 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1725 * incompatible change: the single-stepper is no longer available
1726 on Alpha, Mips and Sparc platforms.
1727 * minor incompatible change: the direct superclasses of
1728 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1729 not (STANDARD-OBJECT FUNCTION). This makes the
1730 class-precedence-lists of GENERIC-FUNCTION and
1731 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1733 * minor incompatible change: the default stream external format on
1734 non-unicode SBCL is no longer detected from the locale, but is always
1736 * new feature: Add a version of evaluator that uses an interpreter instead
1737 of the compiler. EVAL still uses the compiler by default, to switch it
1738 to use the interpreter, set the value of the variable
1739 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1740 * minor incompatible change: the single-stepper REPL has been merged
1741 with the normal debugger (see the "Stepping" heading of the debugger help
1742 for more details). The debugger command STEP will no longer switch
1743 to the single-stepper REPL.
1744 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1745 for a type now works.
1746 * bug fix: loading of default sysinit file works. (thanks to Leonid
1748 * bug fix: better detection of circularities in the file-compiler.
1749 (reported by Marco Monteiro)
1750 * bug fix: the CL pathname functions now work with files that have
1751 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1752 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1753 systems with Unix98 pty semantics.
1754 * bug fix: ASDF-INSTALL will now work with bsd tar.
1755 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1757 * bug fix: timers expiring in dead threads no longer cause a
1758 type-error (reported by Paul "Nonny Mouse").
1759 * bug fix: thanks to more lightweight single-stepper instrumentation,
1760 code compiled with (DEBUG 3) will compile and execute significantly faster,
1761 and will have more accurate type-inferencing than before
1762 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1763 whose bindings are modified
1764 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1765 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1766 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1767 CL:SOFTWARE-VERSION with proper version
1769 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1770 * feature: implemented the READER-METHOD-CLASS and
1771 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1772 as specified by AMOP.
1773 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1775 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1776 (thanks to Lutz Euler)
1777 * optimization: hashing of general arrays and vectors has been
1778 improved. (reported by Any Fingerhut)
1779 * enhancement: SB-INTROSPECT is now able to find definitions of
1780 profiled functions. (thanks to Troels Henriksen)
1781 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1782 as well, allowing compiler-macros for SETF-functions to expand.
1783 * enhancement: step-instrumentation no longer wraps known
1784 single-value functions with multiple-value context, allowing
1785 better type inference.
1786 * fixed bug #337: use of MAKE-METHOD in method combination now works
1787 even in the presence of user-defined method classes. (reported by
1788 Bruno Haible and Pascal Costanza)
1789 * fixed bug #339(c): if there are applicable methods not part of any
1790 long-form method-combination group, call INVALID-METHOD-ERROR.
1791 (reported by Bruno Haible)
1792 * fixed bug #361: the :FUNCTION initarg in the protocol for
1793 initialization of methods can now be used to override
1794 internally-produced optimized functions. (reported by Bruno
1796 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1797 system-provided lambda expression no longer cause warnings about
1798 unbound #:|pv-table| symbols.
1799 * bug fix: improved the handling of type declarations and the
1800 detection of violations for keyword arguments with non-constant
1802 * bug fix: potentially erronous calls to PATHNAME and
1803 MERGE-PATHNAMES were being flushed in some cases.
1804 (reported by Richard Kreuter)
1805 * bug fix: compiled calls to TYPEP were mishandling obsolete
1806 instances. (reported by James Bielman and Attila Lendvai)
1807 * bug fix: format strings with ~> without matching ~< no longer
1808 trigger an AVER, but signal an understandable error instead.
1809 (reported by Antonio Martinez)
1810 * bug fix: specifying an output-file without a pathname-type for
1811 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1812 of input-file instead of "fasl". (reported by Robert Dodier)
1813 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1814 (reported by James Y Knight).
1815 * bug fix: compiler-macros-function did not consider the environment
1816 argument for shadowing by local functions.
1817 * bug fix: compiler-macros expansion was inhibited by local INLINE
1819 * bug fix: inline expansions of known functions were subject to
1820 step-instrumentation in high debug policies, leading to problems
1821 with type-inference.
1822 * bug fix: compiler failed to differentiate between different CONS
1823 types in some cases.
1824 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1825 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1826 * bug fix: #368: incorrect use of expressed vs. upgraded array
1828 * bug fix: #306a: more precise unions of array types.
1829 * thread-safety improvements:
1830 ** CONDITION-WAIT could return early on Linux, if the thread was
1831 interrupted and subsequently continued with SIGCONT.
1832 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1834 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1835 * added support for the ucs-2 external format. (contributed by Ivan
1837 * minor incompatible change: pretty printing of objects of type
1838 (cons symbol) is, in the default pprint-dispatch-table, now
1839 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1841 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1842 called later in a class's lifetime, possibly as late as when the
1843 first instance of the class is created. Previously,
1844 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1845 class became finalizeable.
1846 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1847 for multibyte external-format streams. (thanks to "vbzoli")
1848 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1849 with :ALLOCATION :CLASS inherited from superclasses of the
1851 * fixed bug: anonymous classes can now be created using the :NAME
1852 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1853 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1854 * fixed bug: core-files saved with :EXECUTABLE T can again be
1855 executed when SBCL_HOME isn't set. (reported by James Knight)
1856 * fixed bug: toplevel LOCALLY forms with declarations could
1857 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1858 * fixed bug: printing from several different threads using different
1859 values of *print-case* could cause invalid output, due to
1860 some internal special variables of the printer not being bound
1861 thread-locally (reported by Max Mikhanosha)
1862 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1863 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1864 (reported by Pascal Costanza)
1865 * fixed bug: FINALIZE-INHERITANCE is called from
1866 REINITIALIZE-INSTANCE on classes when the class has previously
1867 been finalized, as required by AMOP.
1868 * minor code generation optimizations:
1869 ** better register allocation in CLOS dispatching functions
1870 ** overflow detection when coercing signed bytes to fixnums on x86-64
1871 ** is now implemented with one IMUL instruction instead of three shifts
1872 ** more efficient bit-vector access on x86 and x86-64
1873 ** more efficient access to raw structure slots on x86 and x86-64
1874 * fixed some bugs revealed by Paul Dietz' test suite:
1875 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1876 return its argument.
1878 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1879 * feature: thread support on Solaris/x86, and experimental thread support
1881 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1883 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1884 default method for SLOT-UNBOUND.
1885 * minor incompatible change: prevent the user from specializing the
1886 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1887 somewhat counter to the intent of the protocol, I (CSR) think, and
1888 additionally it just doesn't work in SBCL as currently
1889 implemented, thanks to optimizations (that are always valid for
1890 the other three SLOT-VALUEish functions, but not for the setter).
1891 * minor incompatible change: the :SB-LDB feature is now enabled by
1892 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1893 the low-level debugger.
1894 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1895 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1896 down to an SB-SYS:FD-STREAM, allowing direct communication in
1897 more cases. Temporary files and pipes are still used as a fallback
1899 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1900 on the non-reentrant C functions localtime(3) and gmtime(3).
1901 * bug fix: global optimization policy was not visible in LOCALLY and
1903 * bug fix: class objects can be used as specializers in methods.
1904 (reported by Pascal Costanza)
1905 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1906 with a type error. (reported by blitz_ on #lisp)
1907 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1908 failed with a type error. (reported by Pascal Bourguignon)
1909 * bug fix: merging pathnames against defaults with :DIRECTORY
1910 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1911 (reported by James Y Knight)
1912 * bug fix: saving large (>2GB) cores on x86-64 now works
1913 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1914 constant index and a (simple-array (signed-byte 32)) array
1915 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1916 error (patch by Robert J. Macomber)
1917 * feature: TIME now displays the amount of run-time spent in GC
1918 * bug fix: The debugger now does a better job of respecting
1919 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1920 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1921 workaround for bug 403.)
1922 * bug fix: floating point exception handling now works on FreeBSD
1923 (thanks to NIIMI Satoshi)
1924 * fixed some bugs revealed by Paul Dietz' test suite:
1925 ** MISC.641: LET-conversion were not supposed to work in late
1927 * improvements to the Win32/x86 port:
1928 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1929 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1931 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1932 * new feature: source path information is generated for macro-expansion
1933 errors for use in IDE's like Slime (thanks to Helmut Eller)
1934 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1935 * bug fix: compiler does not loop forever on an invalid type in
1937 * improvement: compilation of most CLOS applications is significantly
1939 * optimization: added a limited bytecode compiler for simple toplevel
1940 forms, speeding up compilation and FASL loading
1941 * bug fix: the statistical profiler now properly distinguishes anonymous
1944 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1945 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1946 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1947 into subclasses of the finalized class. Now user calls to
1948 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1949 system return before any subclasses are finalized.
1950 * minor incompatible change: The reader no longer ignores errors
1951 regarding non-existent packages in #+ and #- feature tests.
1952 * new feature: command line options --no-sysinit, --no-userinit to
1953 inhibit loading the corresponding init files
1954 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1955 for sending data through UDP sockets (thanks to François-René Rideau)
1956 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1957 error is signalled instead (thanks to François-René Rideau)
1958 * minor incompatible change: Error signalling behaviour of lexical
1959 operations violating package locks has changed slightly. Refer to
1960 documentation on package locks for details.
1961 * enhancement: EVAL can process IF-expressions without resorting to the
1963 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1964 constant-folded properly due to missing out-of-line functions.
1965 (reported by Mika Pihlajamäki)
1966 * bug fix: LISTEN sometimes returned T even in cases where no data was
1967 immediately available from the stream
1968 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1969 were reversed. (reported by Levente Mészáros)
1970 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1971 when given a vector displaced to an adjustable array. (reported
1973 * bug fix: derivation of float boundaries from numbers outside the
1974 appropriate float range (reported by John Wiseman)
1975 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1977 * bug fix: precomputing cache entries for generic functions with
1978 some subclasses of specializers as yet invalid does not attempt to
1979 fill a cache line with a negative offset. (reported by Levente
1981 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1982 allow condition class objects as arguments to DOCUMENTATION and
1983 (SETF DOCUMENTATION); only find and set documentation for
1984 structure names for the STRUCTURE doc-type. (suggested by Gary
1986 * improvements to the Win32/x86 port:
1987 ** (user-homedir-pathname) and default initialization file
1988 locations now know about the user's "Documents and Settings"
1989 directory (thanks to Yaroslav Kavenchuk)
1990 ** run-program is implemented (thanks to Mike Thomas)
1991 ** sockets support (thanks to Timothy Ritchey)
1992 ** better backtrace support (thanks to Alastair Bridgewater)
1993 ** sb-grovel supported
1994 ** asdf-install and sb-posix work somewhat
1995 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1996 * improvements to the Solaris/x86 port:
1997 ** works on Solaris 11/Solaris Express
1998 ** floating-point exception handling support
1999 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2000 * fixed some bugs revealed by Paul Dietz' test suite:
2001 ** REMOVE-METHOD returns its generic function argument even when
2002 the method is not one of the generic functions' methods.
2003 ** objects declared as MEMBER types can be admissible arguments to
2004 structure accessors.
2005 ** printing characters should simply be printed by the FORMAT ~:C
2007 ** compiler failure when compiling functions with hairy constant
2008 defaults for optional parameters.
2009 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2010 function, which is already optimized.
2012 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2013 * new platform: experimental support for SBCL x86/Darwin, including
2014 MacOS X 10.4.5 on Intel.
2015 * new feature: Unicode character names are now known to the system
2016 (through CHAR-NAME and NAME-CHAR).
2017 * new feature: the filesystem location of SBCL's core file is
2018 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2019 * minor incompatible change: the contrib modules SB-POSIX and
2020 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2021 this change is to make it easier to distribute
2022 location-independent binaries.
2023 * bug fix: as implied by AMOP, standardized classes no longer have
2024 slots named by external symbols of public packages. (reported by
2026 * optimization: calling functions via constant symbols -- as in
2027 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2028 via the function object as in (FUNCALL #'FOO).
2029 * optimization: on x86 and x86-64, the calling convention for the
2030 case of dealing with an unknown number of values has been altered
2031 to be friendlier to the prediction heuristics implemented,
2032 particularly with reference to CALL and RET pairing. (thanks to
2033 Alastair Bridgewater)
2034 * optimization: on x86, the code for access to thread-local symbol
2035 values and binding/unbinding of thread-local symbols is smaller.
2036 (thanks to Alastair Bridgewater)
2037 * enhancement: CONSTANTP is now able to determine constantness of
2038 more complex forms, including calls to constant-foldable standardized
2039 functions and some special forms beyond QUOTE.
2040 * fixed bug: occasional GC crashes on Solaris/x86
2041 * optimization: x86-64 supports stack allocation of results of simple
2042 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2043 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2044 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2045 (thanks to James Knight)
2046 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2047 by the standard (thanks to Stephen Compall)
2049 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2050 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2051 be used for bundling the runtime and the core file into one
2052 executable binary. This feature is not currently supported on all SBCL
2053 platforms. (thanks to James Bielman and NIIMI Satoshi)
2054 * new feature: a generational or ephemeral garbage collector is now
2055 the default on the PowerPC platform (both Linux and Darwin). The
2056 old Cheney (stop and copy) collector is a build-time option.
2057 (thanks to Cyrus Harmon, after Raymond Toy)
2058 * minor incompatible change: the method by which SBCL finds its
2059 contributed modules has changed; it no longer relies on symbolic
2060 links from an $SBCL_HOME/systems directory, but searches directly
2061 in the subdirectories of $SBCL_HOME.
2062 * enhancement: the dynamic heap size on the Linux/PPC platform is
2063 markedly larger, even using the older Cheney garbage collector.
2064 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2065 certain complicated string types. (reported by Gary King)
2066 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2067 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2068 * fixed bug: DOCUMENTATION on structures no longer signals an
2069 error if no structure type of the right name exists. (reported by
2071 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2072 applicable non-standard primary or :AROUND method on
2073 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2074 no longer cause unbound variable errors. (reported by Kevin Reid)
2075 * fixed bug: metacircle resolution in cases where methods have slots
2076 added before the slots from STANDARD-METHOD. (reported by Jean
2078 * fixed bug: the Power PC assembly code for calling into lisp
2079 sometimes computed its return address wrongly (depending on the
2080 15th bit of the address, fixed at link time). This used to
2081 manifest itself in a segmentation violation while building PCL.
2082 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2083 many others over the years)
2084 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2085 the stack pointer (treated as a signed integer) is negative.
2086 (thanks to Peter van Eynde)
2088 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2089 * new platform: experimental support for the Windows operating
2090 system has been added. (thanks to Alastair Bridgewater)
2091 * fixed several bugs in and robustified the PPC FFI (including
2092 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2093 * bug fix: allow non-simple string symbol names (reported by Paul
2095 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2097 * bug fix: saving a core corrupted callbacks on x86/x86-64
2098 * bug fix: closed a loophole in metacircularity detection and
2099 grounding in the PCL implementation of CLOS.
2100 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2101 (reported by tomppa on #lisp)
2102 * bug fix: clear the direction flag on Lisp -> C transitions, as
2103 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2104 (reported by Andrej Grozin and Hendrik Maryns)
2105 * optimization: major improvements to GC efficiency on GENCGC platforms
2106 * optimization: faster implementation of EQUAL
2107 * optimization: emit more efficient opcodes for some common
2108 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2109 * optimization: several other minor code-generation improvements on x86-64
2110 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2112 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2113 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2114 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2115 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2116 by ANSI as a generic function, and for consistency (SETF
2117 GENERIC-FUNCTION-NAME) is treated likewise.
2118 * fixed bug #233.b: make constraint propagation notice when a variable
2119 value is changed after it is referenced but before it is used
2120 * fixed bug #296: no more arbitrary behaviour from filenames with
2121 odd characters as --load arguments. (reported by Adam Warner)
2122 * fixed bug #390: :CHARACTER-SET pathname components now work as
2123 expected. (reported by Tim Daly Jr)
2124 * fixed bug #391: complicated :TYPE intersections in slot
2125 definitions no longer cause an error in PCL internals.
2126 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2127 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2128 returning the number of octets which would be written to the
2129 file-stream. (thanks to Robert J. Macomber)
2130 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2131 arguments to the internal stream functions. (thanks to David
2133 * bug fix: stack exhaustion is now handled on the x86/SunOS
2134 platform. (thanks to Daisuke Homma)
2135 * bug fix: more accurate ROOM results on GENCGC platforms
2136 * optimization: improved type inference for arithmetic-for
2137 index variables in LOOP
2138 * optimization: faster floating-point SQRT on x86-64
2139 * fixed some bugs revealed by Paul Dietz' test suite:
2140 ** DOCUMENTATION returns NIL instead of "" for method combinations
2141 that don't have a docstring
2143 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2144 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2145 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2146 therefore are not customizeable by user code (as seems to be at
2147 least permitted and maybe required by AMOP). As a consolation,
2148 however, the SBCL implementation of these functions now calls
2149 REINITIALIZE-INSTANCE as specified by AMOP.
2150 * bug fix: slot-definition documentation is propagated as per ANSI
2151 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2152 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2153 argument, as do eslotd initialization methods. (from Pascal
2154 Costanza's "Closer" project)
2155 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2156 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2158 * bug fix: it is now possible to have more than one subclass of
2159 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2160 (reported by Bruno Haible, Pascal Costanza and others)
2161 * bug fix: the dependent update protocol now works for generic
2162 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2163 and Pascal Costanza)
2164 * bug fix: condition-class instances corresponding to
2165 DEFINE-CONDITION forms are now created eagerly. (reported by
2166 Kalle Olavi Niemitalo on comp.lang.lisp)
2167 * bug fix: floating point printing is more accurate in some
2168 circumstances. (thanks to Simon Alexander)
2169 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2170 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2171 * bug fix: callbacks on OS X now preserve stack-alignment.
2172 (thanks to Cyrus Harmon)
2173 * enhancement: the x86-64 disassembler is much better at
2174 disassembling SSE instructions. (thanks to Lutz Euler)
2175 * enhancement: CHECK-TYPE on a variable now allows type-inference
2176 (thanks to Vincent Arkesteijn)
2177 * optimization: improved performance of EUC-JP external format.
2178 (thanks to NIIMI Satoshi)
2179 * optimization: performance improvements to IO on file streams of
2180 :ELEMENT-TYPE CHARACTER
2181 * optimization: much faster memory allocation on x86-64
2182 * optimization: faster garbage collections (latency and throughput)
2184 * optimization: faster bignum subtraction and division on x86 and x86-64
2185 (thanks to Lutz Euler)
2186 * optimization: more accurate type-inference for loops that use a
2187 floating point index variable or a negative step.
2189 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2190 * bug fix: add a workaround to SBCL looping infinitely at startup on
2191 Linux kernels with apparently buggy implementations of personality().
2192 (thanks to Svein Ove Aas)
2193 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2194 (thanks to David Lichteblau)
2195 * bug fix: local bindings shadow global symbol macros for
2196 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2197 * optimization: non-open coded uses of numeric comparison operators
2198 (e.g. >) no longer cons when called with more than one parameter
2199 on platforms supporting dynamic-extent allocation.
2200 * enhancement: saving cores with foreign code loaded is now supported
2201 on MIPS/Linux in addition to the previously supported platforms.
2202 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2203 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2204 * bug fix: division by zero in sb-sprof when no samples were collected
2205 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2206 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2207 (thanks to Alexander Kjeldaas)
2208 * new feature: ignoring the return values of destructive functions
2209 like NREVERSE signals a compile-time style-warning.
2210 (thanks to Kevin Reid)
2211 * new feature: the alignment of alien structure fields can be
2212 explicitly specified. (thanks to Cyrus Harmon)
2213 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2214 and dump core on SIGQUIT
2216 ** incompatible change: threads do not inherit values of specials
2217 from their parents (see manual)
2218 ** bug fix: threads stacks belonging to dead threads are freed by the
2219 next exiting thread, no need to gc to collect thread stacks anymore
2220 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2221 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2222 ** bug fix: dynamic variable and thread start related gc lossage
2223 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2225 * fixed some bugs revealed by Paul Dietz' test suite:
2226 ** SUBTYPEP is slightly more accurate on heinously complicated
2227 CONS types where some of the members have uncertain (in the
2228 NIL, NIL sense) type relationships to each other.
2230 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2231 no longer purified unless :PURIFY T is explicitly specified.
2232 ** Non-purified cores are significantly smaller than before
2234 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2235 * new feature: timers based on Zach Beane's excellent timer package
2236 * added support for the following external formats: koi8-u,
2237 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2238 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2239 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2240 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2241 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2242 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2243 * incompatible change: a threaded SBCL will no longer revert to
2244 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2245 * bug fix: interrupts are disabled until startup is complete; no
2246 more sigsegvs when receiving a signal to soon
2247 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2249 * bug fix: add a workaround for the memory randomization features in
2250 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2251 workaround will only be in effect on systems with the proc filesystem
2253 * bug fix: printing objects of type HASH-TABLE signals a
2254 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2256 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2257 have been running for over 50 days. (reported by Gilbert Baumann)
2258 * bug fix: the logic for getting names of functions gets less
2259 confused when confronded with alternate-metaclass
2260 funcallable-instances. (reported by Cyrus Harmon)
2261 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2262 consistent, even on internal alternate-metaclass objects.
2263 * bug fix: flush closure information collected by physical
2264 environment analysis prepass before the main pass. (bug reported
2266 * bug fix: compiler pack phase does not modify a hashtable, which is
2267 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2268 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2269 may be expanded. (reported by Alexander <malishev> on c.l.l)
2270 * bug fix: no more style-warnings when compiling code using LAST
2271 under high-SPEED low-SPACE settings. (reported by David Wallin
2273 * fixed some incompatibilities between SBCL's MOP and the MOP
2275 ** the METAOBJECT class is now implemented;
2276 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2277 STANDARD-OBJECT, as required;
2278 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2279 now compatible (as required by VALIDATE-SUPERCLASS); there
2280 remains a consistency requirement over the presence or absence
2281 of the FUNCTION class in the superclass list of finalized
2282 classes; see the manual for more details;
2283 ** the :AROUND method for COMPUTE-SLOTS on
2284 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2285 requested slot ordering.
2287 ** bug fix: parent thread now can be gc'ed even with a live
2289 ** bug fix: binding a special with PROGV to no value is not
2290 the same as that symbol not having been bound (thanks to
2292 ** bug fix: binding specials is thread safe (thanks to
2294 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2295 and SB-SPROF do not die with 'no handler for signal XX in
2296 interrupt_handle_now(..)' anymore
2297 ** bug fix: WITH-TIMEOUT works with multiple running threads
2298 * fixed some bugs revealed by Paul Dietz' test suite:
2299 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2300 the :method-class keyword argument.
2302 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2303 * new port: the Solaris operating system on x86 processors is now
2304 mostly supported, though some rough edges in the environment
2305 remain. (thanks to Daisuke Homma)
2306 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2307 space for its heap. (thanks to Thiemo Seufer)
2308 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2309 closures. (thanks to Thiemo Seufer)
2310 * minor incompatible change: eof selects abort in the debugger.
2311 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2312 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2314 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2315 deprecated, and will go away in a future revision of SBCL.
2316 * minor incompatible change: GC-ON and GC-OFF are no longer
2317 implemented with a counter, it does not matter how many times gc
2318 is switched on or off
2319 * bug fix: discriminating functions for generic function classes
2320 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2321 make invalid assumptions about method precedence order. (reported
2323 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2324 platforms. (thanks to Thiemo Seufer)
2325 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2326 * bug fix: correct pathname printing with printer escaping is on.
2327 (thanks to Kevin Reid)
2328 * bug fix: complex VOP definitions in "user-space" no longer trigger
2329 package locks. (reported by Zach Beane)
2330 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2331 for funcallable-instance functions, and is no different from
2333 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2334 characters in the current readtable. (reported by Nicholas Neuss)
2335 * bug fix: SUBTYPEP on various CONS types returns more a more
2336 accurate acknowledgment of its certainty.
2337 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2338 lists in some cases. This partially fixes bug 384.
2339 * flush all standard streams before prompting in the REPL and the
2341 * bug fix: signal handling and triggering gc do not conflict
2342 directly anymore, in particular a high frequency sb-sprof does
2343 not prevent gc from running
2344 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2345 approximation for timezone and DST information between the
2346 universal time epoch and the smallest negative 32-bit time_t.
2347 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2348 year 1899 so long as the encoded time is non-negative.
2349 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2350 the correct answer for non-constant rotate amounts when performing
2351 an inline 32-bit rotation.
2353 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2354 there is only one thread in the session
2355 ** bug fix: memory leak for streams created in one thread and
2356 written to in another
2357 ** bug fix: lockup when compiled with gcc4
2358 ** bug fix: race that allows the gc to be triggered when gc is
2360 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2361 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2363 ** bug fix: finished threads are gc'ed properly
2364 * fixed some bugs revealed by Paul Dietz' test suite:
2365 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2366 has arguments with a different set of applicable methods from
2367 the orignal arguments.
2368 ** The type error thrown by MAP now has a correct expected-type
2370 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2371 name a compiled function.
2372 ** Three MISC tests where a large bignum was improperly coerced to
2373 a float that couldn't represent that bignum during type
2374 derivation were fixed.
2375 ** SUBTYPEP can now handle types involving the negation of a
2376 list-form FUNCTION type.
2377 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2378 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2379 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2381 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2382 * New feature: Experimental support for bivalent streams: streams
2383 opened with :element-type :default now allow character and binary
2384 (unsigned-byte 8) I/O
2385 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2386 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2388 * bug fix: no more highly sporadic "couldn't check whether ~S is
2389 readable" when reading a stream and an interrupt hits in the middle
2390 of a select system call
2391 * compiler better recognizes complex arrays (reported by Eduardo
2393 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2394 for variables on SBCL built with linkage-tables. (reported by Luis
2396 * various error reporting improvements.
2397 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2398 (Thanks to Thiemo Seufer)
2399 * bug fix: nested reader invokations work correctly
2400 * bug fix: it is possible to have simultaneous references to foreign
2401 code and foreign data with the same name.
2403 ** added x86-64 support
2404 ** incompatible change: the threading api now works with thread
2405 objects instead of thread ids
2406 ** bug fix: threads are protected from signals and interruption when
2407 starting up or going down
2408 ** bug fix: a race where an exiting thread could lose its stack to gc
2409 ** bug fix: don't halt on infinite error in threads if possible
2410 ** fixed numerous gc deadlocks introduced in the pthread merge
2411 ** bug fix: fixed thread safety issues in read and print
2412 ** bug fix: debugger doesn't hang on session lock if interrupted at
2413 an inappropriate moment
2414 ** bug fix: run-program is now thread safe(r)
2415 ** bug fix: inner with-recursive-lock no longer releases the mutex
2416 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2417 * fixed some bugs revealed by Paul Dietz' test suite:
2418 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2419 EXPECTED-TYPE slots filled.
2420 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2422 ** MAKE-CONDITION accepts classes as type-designators.
2423 ** COMPILE may never return NIL.
2424 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2425 range before calling Unix time functions
2427 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2428 * numerous signal handling fixes to increase stability
2429 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2430 * minor incompatible change: we now correctly canonize default
2431 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2432 as per the MOP, rather than the historical (INITARG INITFUNCTION
2433 INITFORM). (reported by Bruno Haible)
2434 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2435 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2436 for more information.
2437 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2438 pathname is a directory pathname.
2439 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2440 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2442 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2443 :METACLASS argument in addition to a class name. (reported by
2444 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2445 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2446 (reported by Bruno Haible; patch from Gerd Moellmann)
2447 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2449 * bug fix: more cleanups to the floating point exception handling on
2450 x86-64 (thanks to James Knight)
2451 * bug fix: the compiler does not try to constant fold calls of
2452 COERCE and BIT-* functions when they return freshly constructed
2453 objects. (reported by Nikodemus Siivola and Paul Dietz)
2454 * optimization: improved the MIPS versions of generic (in the
2455 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2456 * optimization: direct conversion of (unsigned-byte 32) to floats on
2457 the PowerPC platform.
2458 * optimization: structure instances with raw slots now use less
2459 memory, and probably show better memory locality. (thanks to
2461 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2462 are treated as requests for stack allocation on the x86-64,
2463 Alpha-32, PPC and SPARC platforms.
2464 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2465 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2466 (thanks to Tony Martinez)
2468 ** gcing a dead thread can no longer lead to lockups
2469 ** threads block signals until they are set up properly
2470 ** errno is no longer shared by threads
2471 ** interrupt-thread restores the eflags register on x86
2472 ** fixed some lockups due to gc/thread interaction
2473 * fixed some bugs revealed by Paul Dietz' test suite:
2474 ** invalid dotted lists no longer raise a read error when
2475 *READ-SUPPRESS* is T
2476 ** signal an error if a symbol that names a declaration is used
2477 as the name of a type, or vice versa
2478 ** allow using the (declare (typespec var*)) abbreviation for
2479 (declare (type typespec var*)) with all type specifiers
2480 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2481 ** always return NIL from PPRINT-POP when OBJECT is NIL
2482 ** don't signal errors when pretty-printing malformed LABELS,
2483 FLET or MACROLET forms
2484 ** declarations in a DOLIST body are also in scope for the
2486 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2488 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2491 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2492 * fixed cross-compiler leakages that prevented building a 32-bit
2493 target with a 64-bit host compiler.
2494 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2495 opened with :IF-EXISTS :OVERWRITE.
2496 * fixed bug 281: error for an invalid qualifier in a short-form method
2497 combination method is not signalled until the faulty method is called.
2498 * bug fix: iteration variable type inferrer failed to deal with open
2499 intervals. (reported by Alan Shields)
2500 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2501 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2502 or more runtime options were provided to the sbcl binary.
2503 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2504 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2505 * optimization: there's now a fast-path for fixnum arguments in the
2506 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2507 * optimization: the code generated on x86-64 is more compact thanks
2508 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2509 * bug fix: floating-point exception handling now partly works on
2510 x86-64. (Thanks to James Knight)
2511 * improvement to the MIPS backend from Thiemo Seufer: C-style
2512 64-bit long long arguments and return values to alien functions
2514 * fixed some bugs revealed by Paul Dietz' test suite:
2515 ** the type-error signalled from WARN has a filled-in DATUM slot.
2516 ** the type-error required when a stream is not associated with
2517 a file has the stream as its datum.
2518 ** type-errors on single-floats on x86-64 no longer have
2519 :INVALID-OBJECT as the datum
2520 ** the type-errors signalled for invalid function names now have
2521 a correct expected type
2522 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2523 for structures defined with a :TYPE. Documentation strings for
2524 typed structures are no longer immediately discarded
2525 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2526 broadcast streams and synonym streams. FILE-LENGTH now also works
2527 on broadcast streams.
2529 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2530 * incompatible change: the --noprogrammer option, deprecated since
2531 version 0.7.5, has been removed. Please use the equivalent
2532 --disable-debugger option instead.
2533 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2535 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2536 inoperational for a while now) has been completely removed.
2537 * null lexical environments are now printed as #<NULL-LEXENV>,
2538 significantly reducing the amount of clutter in typical backtraces.
2539 * documentation on weak pointers, finalization, and after GC hooks
2540 has been added to the manual.
2541 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2542 as other specialized array types, is much faster. SUBSEQ and
2543 COPY-SEQ on such arrays have also been sped up.
2544 * optimization: EQL is now more efficient when at least other argument
2545 is known to be of type (OR FIXNUM (NOT NUMBER)).
2546 * fixed bug: the runtime is now less vulnerable to changes in the
2547 size of the SBCL object on OS X, and virtual memory is reserved for
2548 all spaces that need to be at a fixed address.
2549 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2550 * fixed bug: finalizers and after GC hooks that cause consing are now
2552 * fixed bug: compiler error messages and summaries are now printed to
2553 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2554 * fixed inference of the upper bound of an iteration variable.
2555 (reported by Rajat Datta).
2556 * fixed bug 211e: calling local functions with duplicated constant
2557 keyword argument no longer causes a bogus style warning about an
2559 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2560 ftype declaration to be disregarded. (reported by Dave Roberts)
2561 * fixed bug 373: caused by erronous compilation of references to alien
2562 variables in the runtime on ppc/darwin.
2563 * fixed bug 376: CONJUGATE type deriver.
2564 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2565 (reported by Baughn on #lisp)
2566 * a cross-compiler bug on non-x86 platforms has been identified and
2567 fixed. (thanks to Bruno Haible)
2568 * improvements to the MIPS runtime code for increased stability.
2569 (thanks to Thiemo Seufer)
2570 * increased the maximimum compact environment size to allow
2571 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2572 * partial workaround for bug 135: don't name the function we're
2573 calling for hairy cases of EVAL, so as not to accumulate one environment
2574 entry per call to EVAL. (reported by Kevin Reid)
2575 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2576 * optimization: type testing for non-vector arrays should be faster.
2577 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2579 * bug fix: setting 31st element of a bit vector to zero did not work
2581 * bug fix: redefining a class definition which failed due to a
2582 previous accessor / function clash now works (but see BUGS entry
2583 #380 for more problems in this area). (thanks to Zach Beane)
2584 * the long form of DEFINE-METHOD-COMBINATION disables method group
2585 checking when given a single method group with pattern *. (thanks
2587 * on x86 compiler supports stack allocation of results of simple
2588 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2589 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2590 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2591 * fixed some bugs related to Unicode integration:
2592 ** the restarts for recovering from input and output encoding
2593 errors only appear when there is in fact such an error to
2595 * fixed some bugs revealed by Paul Dietz' test suite:
2596 ** MISC.549 and similar: late transformation of unsafe type
2597 assertions into derived types caused unexpected code
2599 ** SCALE-FLOAT type deriver is less wrong.
2600 ** type derivers for EXP, LOG and similar functions compute result
2601 types for complex arguments better.
2602 ** (MISC.563) CONJUGATE type deriver works for very restricted
2604 ** out-of-line type testers for character strings are available.
2605 ** EQUAL compiler transform understands specialness of objects
2607 ** accessing double-floats stored on the stack now works on x86-64.
2608 ** debugger internals could sometimes create invalid lispobjs,
2609 resulting in GC crashes.
2610 ** MISC.548: type check weakening can convert required type into
2612 ** initialization forms for bindings are not in scope of free special
2615 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2616 * incompatible change: thread support for non-NPTL systems has
2617 been removed - locking is buggy and unreliable. A threaded
2618 SBCL build will now warn at startup and refuse to create
2619 new threads, unless futex support is detected in the kernel
2620 * incompatible change: the top level REPL now has only an ABORT
2621 restart associated with it, not TOPLEVEL and ABORT as it used to.
2622 TOP and TOPLEVEL are now available as debugger commands for
2623 returning to the top level.
2624 * incompatible change: forms evaluated in the REPL now use the
2625 global optimization policy.
2626 * incompatible change: user- and system-initialization files are
2627 no longer processed with LOAD, but by READ and EVAL; hence the
2628 global optimization policy, startup package, readtable, etc,
2630 * The .fasl file format number has been incremented because of
2631 various incompatible changes.
2632 * internal entry point details and argument counts no longer appear
2633 in backtraces unless explicitly requested by setting
2634 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2635 * built-in and standard functions no longer have names like "top
2636 level local call to FOO".
2637 * fixed bug 32: functions defined in non-null lexical environments
2638 now have more legible printed representation
2639 * fixed bug 33: functions defined in non-null lexical environemnts
2640 are now more amenable to inspection by INSPECT.
2641 * workaround for bug 354: XEPs no longer appear in backtraces unless
2642 explicitly requested.
2643 * fixed bug: receiving the signal which results from attempting to
2644 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2645 SIGBUS on other *BSDs) on architectures where the C stack is also
2646 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2647 to debugger confusion or wild instability. (reported by Cheuksan
2649 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2650 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2651 (reported by Lutz Euler)
2652 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2653 compiled code. (reported by Paul Dietz)
2654 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2655 specialized parameter to a method to something that is not TYPEP
2656 the specializer is now possible.
2657 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2658 face of package deletion.
2659 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2660 pathname. (reported by David Tolpin on c.l.l)
2661 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2662 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2663 STRING-STREAM and FILE-STREAM, respectively.
2664 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2665 than previously; in addition, its test suite is now run on build.
2666 (thanks to Luke Gorrie)
2667 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2668 * optimization: added a immediate representation for single-floats
2670 * fixed some bugs revealed by Paul Dietz' test suite:
2671 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2672 ** attempting to create a package with a colliding nickname causes
2673 correctable errors to be signalled.
2674 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2675 ** several x86-64 backend bugs related to sign-extension of immediate
2678 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2679 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2680 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2682 * fixed loading of multiply forward-referenced layouts.
2683 (thanks to Cheuksan Wang)
2684 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2685 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2686 (see COMPILE-FILE documentation for details of :PRINT option)
2687 * fixed bugs 19 and 317: fixed-format floating point printing is
2688 more accurate. This also fixes a bug reported by Adam Warner
2689 related to the ~@F format directive.
2690 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2692 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2693 dispatch table if the from-char is a dispatch macro character.
2694 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2695 by the wordsize no longer ignore the last word. (reported by Lutz
2697 * fixed bug in type checking of dynamic-extent variables. (reported
2699 * optimization: sequence traversal functions use their freedom to
2700 coerce function designators to functions.
2701 * optimization: code with many calls to CLOS methods specialized on
2702 CLOS classes has had redundant type checks removed.
2703 * optimization: added declarations to speed up operations that access
2704 the internal character database (for example STRING-UPCASE)
2705 * optimization: comparison operations between floats and sufficiently small
2706 fixnums no longer create extra rationals
2707 * fixed some bugs related to Unicode integration:
2708 ** portions of multibyte characters at the end of buffers for
2709 character-based file input are correctly transferred to the
2710 start of the buffer at the next read.
2711 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2712 passing it through to OPEN.
2713 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2714 argument given to internal calls to OPEN.
2715 ** the built-in comment readers (introduced by character sequences
2716 ";" and "#|") are more forgiving to encoding errors; they will
2717 STYLE-WARN and then attempt to resync the stream at a character
2718 boundary. (thanks to Teemu Kalvas)
2719 * fixed some bugs in the x86-64 port:
2720 ** Negative short int return values from c-calls are sign-extended
2722 ** The stack is aligned to 16-bytes for c-calls, as required by
2723 the ABI. (thanks to Cheuksan Wang)
2724 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2725 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2726 for enums. (thanks to Vincent Arkesteijn)
2727 ** Multiple small optimizations and bugfixes for floating point
2729 * fixed some bugs revealed by Paul Dietz' test suite:
2730 ** Space, Tab, Linefeed, Return and Page have the invalid
2731 secondary constituent character trait.
2732 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2734 ** WITH-INPUT-FROM-STRING should only update the index place on
2736 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2737 works more reliably.
2738 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2739 with one-dimensional arrays with fill pointers.
2740 ** TYPE-OF failed on a complex with an integer realpart and a
2742 ** compiler failure during type inference for the code of form
2743 (IF (EQL X (THE ...)) ...) (MISC.535).
2745 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2746 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2747 platform. The port supports 61-bit fixnums, large memory spaces
2748 and reloading shared object files.
2749 * enhancement: saving cores with foreign code loaded is now
2750 supported on ppc/Darwin in addition to the previously supported
2752 * enhancement: the statistical profiler now walks deeper into the
2753 call stack for more meaningful call-graphs and accrued time
2754 reports (x86/x86-64 only). It also now reports time spent in
2756 * enhancement: it is now possible to trace most individual methods
2757 of a generic function in addition to tracing the generic function
2759 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2761 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2762 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2763 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2764 produces an error. (thanks to Vincent Arkesteijn)
2765 * bug fix: NAMESTRING on pathnames with :WILD components in their
2766 directories works correctly. (thanks to Artem V. Andreev)
2767 * fixed bug 125: compiler preserves identity of closures. (reported
2769 * bug fixed: functions with &REST arguments sometimes failed with
2770 "Undefined function" when compiled with (DEBUG 3). (reported by
2772 * bug fix: overflow during compiling of setting element of a bit
2773 vector with constant index and value. (reported by Timmy Douglas)
2774 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2775 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2776 * on x86 compiler partially supports stack allocation of dynamic-extent
2778 * GO and RETURN-FROM do not check the extent of their exit points
2779 when compiled with SAFETY 0.
2780 * fixed some bugs related to Unicode integration:
2781 ** encoding and decoding errors are now much more robustly
2782 handled; it should now be possible to recover even from invalid
2783 input or output to the terminal. (thanks to Teemu Kalvas)
2784 ** provided a first cut at implementing STRING-TO-OCTETS and
2785 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2786 ** altered the SB-MD5 contributed module slightly, changing the
2787 interface just enough for it to be supportable for builds where
2788 lisp characters are not eight bits.
2789 * fixed some bugs revealed by Paul Dietz' test suite:
2790 ** the FORMATTER-generated functions for ~V[ conditionals require
2791 the correct number of arguments.
2792 ** READ-FROM-STRING returns the mandated second value when applied
2793 to displaced strings.
2794 ** the #\Rubout and #\Backspace characters are treated as invalid
2795 constituent characters by the tokenizer.
2797 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2798 * new feature: reloading changed shared object files with
2799 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2800 * new feature: references to foreign variables and functions
2801 can now be compiled and loaded before the corresponding shared
2802 object file is loaded, as long as the foreign definitions are
2803 available at runtime.
2804 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2805 supported. (thanks to Dan Debertin)
2806 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2807 just keywords. (thanks to Vincent Arkesteijn)
2808 * fixed bug #331: structure-class instances corresponding to
2809 DEFSTRUCT forms are now created eagerly.
2810 * fixed bug #345: backtraces from calls to undefined functions work
2811 on x86 as well. Related bug #61 is now also partially fixed on x86
2812 (backtraces from throws to unknown catch tags.)
2813 * bug fix: lambda-list parsing is now stricter vrt. order and number
2814 of lambda-list keywords.
2815 * bug fix: as specified by AMOP, an error is signalled if a
2816 class-option appears multiple times in a DEFCLASS form. (reported
2818 * bug fix: RANDOM can be compiled when the compiler derives the type
2819 of its numeric argument as a disjoint set of small integers.
2820 (reported by Paul Dietz)
2821 * bug fix: starting a core saved with shared objects loaded when
2822 those objects are not available no longer causes threaded SBCL to
2823 hang. (reported by Sean Ross)
2824 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2826 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2827 argument, which must always be NIL. (reported by Kalle Niemitalo)
2828 * bug fix: printing 1.0d+23 no longer results in an error.
2829 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2830 * bug fix: structure slot setters preserve evaluation order. (thanks
2832 * fixed some bugs related to Unicode integration:
2833 ** RUN-PROGRAM can allow its child to take input from a Lisp
2834 stream. (reported by Stefan Scholl)
2835 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2836 locales. (reported by Ken Causey)
2837 * fixed some bugs revealed by Paul Dietz' test suite:
2838 ** INCF, DECF and REMF evaluate their place form as specified in
2840 ** FORMATTER expands ~{ ~} iteration directives with V or #
2841 parameters correctly.
2842 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2843 consequent uses no arguments correctly.
2844 ** the system has a partial understanding of the (COMPLEX RATIO)
2846 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2849 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2850 * new feature: a build-time option (controlled by the :SB-UNICODE
2851 keyword feature, enabled by default) for building the system with
2852 support for the entire 21-bit character space defined by the
2854 * new feature: the system now has rudimentary external-format
2855 support; the primary user-visible change at this time is that
2856 characters with the high bit set (such as lower-case-e-acute) will
2857 print correctly to a terminal in a UTF-8 environment.
2858 * minor incompatible change: BASE-CHAR no longer names a class;
2859 however, CHARACTER continues to do so, as required by ANSI.
2860 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2861 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2862 has been moved to the SB-EXT package (temporarily re-exported from
2864 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2865 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2867 * fixed bug #351: better error-handlind and reporting for malformed
2869 * fixed bug #350: bignum-printing is now more memory-efficient,
2870 allowing printing of very large bignums, eg. (expt 2 10000000).
2871 (reported by Bruno Haible)
2872 * fixed bug #302: better primitive-type selection for intersection
2874 * fixed bug #308: non-graphic characters now all have names, as
2875 required. (reported by Bruno Haible)
2876 * bug fix: redefining a class with different superclasses now correctly
2877 removes it from the direct-subclasses of its previous superclasses.
2878 (reported by David Morse)
2879 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2880 new value now works. (reported by Bruno Haible)
2881 * bug fix: correct canonicalization of multiple non-standard slot
2882 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2883 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2884 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2885 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2886 now exists, an signals an error.
2887 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2888 during macroexpansion for non-iteration variables as well. (reported
2889 by Bruno Haible for CMUCL)
2890 * bug fix: Cyclic structures and unprintable objects in compiler
2891 messages no longer cause errors. (reported by Bruno Haible)
2892 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2893 and READ-FROM-STRING all now return a primary value of NIL if
2894 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2895 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2896 (reported by Bruno Haible for CMUCL)
2897 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2898 do not designate a condition. (reported by Bruno Haible for
2900 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2901 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2902 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2903 permitting resolution in favour of any of the conflicting symbols.
2904 (reported by Bruno Haible for CMUCL)
2905 * bug fix: EQUAL compiler optimizations is less aggressive on
2906 strings which can potentially compare true despite having distinct
2907 specialized array element types.
2908 * bug fix: unit enumerations can be defined without dividing by
2909 zero. (thanks to Vincent Arkesteijn)
2910 * FORMAT compile-time argument count checking has been enhanced.
2911 (report from Bruno Haible for CMUCL)
2912 * a partial workaround for the bug 262: the compiler does not try to
2913 inline-expand a local function doing RETURN-FROM from a deleted
2914 BLOCK. (thanks to Peter Denno for the bug report and to David
2915 Wragg for the simple test case)
2916 * fixed some bugs revealed by Paul Dietz' test suite:
2917 ** RENAME-PACKAGE allows all package designators as new package
2919 ** constraint propagation and lambda variable substitution are
2920 more cautious in dealing with partially deleted code.
2921 ** compiler sometimes lost reoptimization passes.
2922 ** CERROR, given a condition as condition designator, passes its
2923 remaining arguments to the continue format control without
2925 ** Case-altering FORMAT directives work correctly on non-ASCII
2927 ** The REAL type specifier handles bounds outside the floating
2928 point ranges without signalling FLOATING-POINT-OVERFLOW.
2929 ** Functions with IR1-transformations can create intercomponent
2930 references to global functions.
2931 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2933 ** FORMAT ~R treats a nil value for its first parameter correctly.
2935 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2936 * enhancement: saving cores with foreign code loaded is now
2937 supported on x86/NetBSD and sparc/Linux in addition to the previously
2938 supported platforms.
2939 * bug fix: on some platforms repeated installations caused multiple
2940 copies of HTML documentation to be installed -- should not happen
2941 any more. (reported by Stefan Scholl)
2942 * bug fix: parsing self-recursive alien record types multiple times
2943 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2944 original patch by Helmut Eller for CMUCL)
2945 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2946 (thanks to Richard Kreuter)
2947 * bug fix: defining classes whose accessors are methods on existing
2948 generic functions in other (locked) packages no longer signals
2949 bogus package lock violations. (reported by François-René Rideau)
2950 * bug fix: special variables as DEFMETHOD parameters no longer have
2951 associated bogus type declarations. (reported by David Wragg and
2953 * bug fix: read-write consistency on streams of element-type
2954 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2955 * bug fix: redefiniton of the only method of a generic function with
2956 no DEFGENERIC no longer emits a full WARNING. In addition,
2957 redefinition of generic functions with no DEFGENERIC to an
2958 incompatible lambda list now signals an error. (thanks to Zach
2960 * bug fix: DEFGENERIC now works even when there's a function of the
2961 same name in an enclosing lexical environment. (thanks to Zach
2963 * fixed compiler failure, caused by instrumenting code during
2964 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2965 * optimization: added loop analysis and improved register allocation
2966 * fixed some bugs revealed by Paul Dietz' test suite:
2967 ** POSITION on displaced vectors with non-zero displacement
2968 returns the right answer.
2969 ** (SIMPLE-STRING) is a valid type specifier for sequence
2971 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2973 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2974 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2976 ** The justification version of the FORMAT ~< directive treats
2977 non-zero minpad parameter correctly.
2979 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2980 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2981 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2982 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2983 the supported interface.
2984 * new feature: Single-stepping of code compiled with DEBUG 2 or
2985 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2986 * new feature: saving cores with foreign code loaded is now
2987 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2988 Timothy Moore's work for CMUCL)
2989 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2990 parameters to * instead of NIL if no initform is supplied.
2991 (reported by Johan Bockgaard)
2992 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2993 correctly when FUNCALL appears as the car of the form. Note:
2994 despite this FUNCALL forms are not currently subject to
2995 compiler-macro expansion. (port of Raymond Toy's fix for the
2996 same from CMUCL, reported by Johan Bockgaard)
2997 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2998 (thanks for Teemu Kalvas)
2999 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3000 case instead of terminating the iteration (thanks for Julian
3001 Squires, Sean Champ and Raymond Toy)
3002 * bug fix: incorrect expansion of defgeneric that caused a style
3003 warning. (thanks for Zach Beane)
3004 * bug fix: slot accessor effective method computation works properly
3005 for classes with multiple non-standard applicable methods on
3006 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3007 * on x86 compiler supports stack allocation of results of LIST and
3008 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3009 CMUCL implementation by Gerd Moellmann)
3010 * fixed some bugs revealed by Paul Dietz' test suite:
3011 ** FORMAT strings with both the ~<~:;~> form of the justification
3012 directive and pretty-printing directives cause an error.
3014 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3015 * incompatible change: the internal functions
3016 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3017 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3018 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3019 instead of the old functions.
3020 * new feature: on platforms where "dladdr" is available foreign
3021 function names now appear in backtraces. (based on Helmut Eller's
3023 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3024 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3026 * documentation: ASDF manual is now distributed with SBCL.
3027 * bug fix: SBCL can now load its contributed modules with REQUIRE
3028 even if the system-provided entries have been removed from
3029 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3031 * bug fix: backtraces involving undefined functions or assembly
3032 routines are more informative. (thanks to Brian Downing)
3033 * bug fix: mutually referent alien structures now work correctly.
3034 (reported by Rick Taube)
3035 * bug fix: structures defined by WITH-ALIEN can be referred to
3036 within other definitions in the same WITH-ALIEN.
3037 * bug fix: division operators (MOD, TRUNCATE and the like) with
3038 constant zero divisors and integer dividends no longer generate
3040 * bug fix: provide default methods for INPUT-STREAM-P and
3041 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3042 * bug fix: improve the detection and resolution of MOP metacycles
3043 (where effective method computation depends on the generic function
3044 having its effective method computed). (reported by Bruno Haible)
3045 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3046 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3047 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3048 * bug fix: pathnames with relative directory components can be
3049 represented relative to default pathnames.
3050 * optimization: in taking the GCD of bignums, reduce the two bignums
3051 to approximately the same size (using Euclid's algorithm) before
3052 applying the more sophisticated binary GCD. (thanks to Juho
3054 * optimization: COUNT on bitvectors now operates word-at-a-time.
3055 * optimization: ASH with a positive, but not necessarily constant,
3056 (leftwards) shift, when in a modular context, is compiled to a
3058 * fixed some bugs revealed by Paul Dietz' test suite:
3059 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3060 if the corresponding argument is NIL.
3061 ** FORMAT directives accepting a minpad parameter treat negative
3063 ** literal commas as character parameters to FORMAT directives are
3065 ** literal spaces directly after ~<Newline> directives within a
3066 format-logical-block (~:< ~@:>) do not induce :FILL-style
3067 conditional newlines.
3068 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3069 as specified: it no longer includes conditional newlines).
3070 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3072 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3073 :PER-LINE-PREFIX argument does not evaluate to a string.
3075 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3076 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3077 the manual for details; for now, package locks can be disabled by
3078 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3079 if no major problems are found then it is likely that they will be
3080 compiled in unconditionally.
3081 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3082 unsupported operators on all platforms. To load a shared library
3083 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3084 object file, link it into a shared library outside of SBCL and
3085 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3087 * bug workaround: ROOM T and the GC were not working together
3088 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3089 reporting facility aren't preserved. That reporting has been
3090 disabled, so now until and unless someone figures out how to make it
3091 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3092 * minor incompatible change: as threatened around sbcl-0.8.0, the
3093 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3094 The symbols are also exported from SB-PCL for backwards
3095 compatibility, but more so than before SB-PCL should be treated as
3096 an implementation-internal package.
3097 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3099 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3100 It is known as of this release not to work on the Alpha, however.
3101 * fixed bug #167: errors signalled due to illegal syntax in method
3102 bodies are now more legible.
3103 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3104 designators and can hence be used with TYPEP.
3105 * fixed bug #333: CHECK-TYPE now ensures that the type error
3106 signalled, if any, has the right object to be accessed by
3107 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3108 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3109 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3111 * fixed bug #334: programmatic addition of slots using specialized
3112 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3113 and :ALLOCATION :CLASS slots.
3114 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3115 float exponents. (rereported by Peter Seibel)
3116 * fixed a bug: #\Space (and other whitespace characters) are no
3117 longer considered to be macro characters in standard syntax by
3118 GET-MACRO-CHARACTER.
3119 * fixed bug: initialization of condition class metaobjects no longer
3120 causes an instance of the condition to be created. (reported by
3122 * fixed bug: it is now possible to have slots such that
3123 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3124 description is neither :INSTANCE nor :CLASS.
3125 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3126 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3127 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3128 non-standard SLOT-DEFINITION-ALLOCATION values.
3129 * fixed bugs: various race conditions handling exiting threads.
3130 CL-PPCRE's thread torture test now passes.
3131 * fixed arguably-a-bug: GC time proportional to number of threads in
3132 system even when most of them are idle
3133 * optimization: improved performance of BIT and SBIT on bit-vectors.
3134 * .fasl file incompatibility: The fasl file version number has
3135 been incremented because of changes associated with package locks.
3137 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3138 * minor incompatible change: the system no longer provides
3139 optimization hints (conditions which are TYPEP
3140 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3141 mode; these hints are still emitted when higher SPEED optimization
3143 * new contrib module: a sampling profiler (profiling by statistical
3144 sampling, rather than by instrumenting functions) is available as
3145 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3146 * the behaviour of the standard function ED is now customizeable by
3147 third parties through a hook variable: see ED's documentation
3148 string for information on the protocol.
3149 * the compiler no longer emits efficiency notes for (FUNCALL X)
3150 when the type of X is uncertain under default optimization
3152 * fixed bug 276: mutating a binding of a specialized parameter to a
3153 method to something that is not TYPEP the specializer is now
3155 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3156 exhibit the required behaviour on the x86 platform. (thanks to
3157 Peter van Eynde, Eric Marsden and Bruno Haible)
3158 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3159 even for difficult arguments. (reported by Peter Graves)
3160 * fixed bug 141a: the backquote printer now descends quoted
3162 * fixed another bug in backquote printing: no more destructive
3163 modification of the form's list structure. (reported by Brian
3165 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3166 move between its address being taken and the call to
3167 interrupt_thread, fixing a crashing race condition.
3168 * the SB-POSIX contrib implementation has been adjusted so that it
3169 no longer exhibits ridiculously poor performance when constructing
3170 instances corresponding to C structs.
3172 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3173 * minor incompatible change: the sb-grovel contrib now treats C
3174 structures as alien (in the sense of SB-ALIEN) objects rather than
3175 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3176 has implications for memory management of client code
3177 (sb-grovel-returned objects must now be manually managed) and for
3178 type safety (alien objects now have full types).
3179 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3180 used to control emission of compiler diagnostics, rather than the
3181 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3182 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3183 quality should be considered deprecated.
3184 * install.sh now installs the user manual as well
3185 * (not quite a new documentable feature, but worth considering in
3186 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3187 beginnings of a semantically meaningful condition hierarchy is
3188 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3190 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3191 designator as the defaults argument.
3192 * fixed bug: Displaced arrays whose displaced-to array has become
3193 too small now cause ARRAY-DIMENSION to signal an error, providing
3194 for safer bounds-checking. (reported by Bruno Haible)
3195 * fixed bug: DEFCLASS slot definitions with identical :READER and
3196 :WRITER names now signal a reasonable error. (reported by Thomas
3198 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3200 * fixed bug: Invalid slot specification errors now print correctly.
3201 (thanks to Zach Beane)
3202 * fixed bug 320: Shared to local slot value transfers in class
3203 redefinitions now happen corrently from superclasses as
3204 well. (reported by Bruno Haible)
3205 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3207 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3208 improper lists correctly. (reported by Bruno Haible)
3209 * fixed bug 313: source-transform for <fun-name> was erroneously
3210 applied to a call of a value of a variable with name <fun-name>.
3211 (reported by Antonio Menezes Leitao)
3212 * fixed bug 307: The obsolete instance protocol ensures that
3213 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3214 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3215 remove dead unknown-values globs from the middle of the stack.
3216 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3217 easier to resume long computations after using *BREAK-ON-SIGNALS*
3218 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3219 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3220 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3221 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3222 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3223 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3225 * fixed a (fairly theoretical) bug in string printing: if
3226 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3227 does not have array-element-type equal to the most general string
3229 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3230 function name. (thanks to Nikodemus Siivola)
3231 * fixed bug: compile-time format string checker failed on
3232 non-closed ~{. (reported by Thomas F Burdick)
3233 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3234 don't warn on legal loop code involving more than one aggregate
3235 boolean. (thanks to Nikodemus Siivola)
3236 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3237 in keyword position to MAKE-PACKAGE was not being reported as
3239 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3240 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3242 * fixed bugs 280 and 312: the checking for multiple definitions in a
3243 file is less likely to become confused by uses of inline
3245 * fixed bug: the #S reader macro performs the keyword coercion
3246 specified for slot names. (reported by Kalle Niemitalo)
3247 * fixed bug: lambda lists may contain symbols whose names start with
3248 & but are not lambda-list-keywords; their occurrence triggers a
3250 * fixed bug 321: define-method-combination argument lambda lists do
3251 not cause invalid code to be generated when &optional or &aux
3252 variables have default values. (reported by Bruno Haible)
3253 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3254 have CLOS classes; this appears also to have fixed reported
3255 instability in stack exhaustion detection.
3256 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3257 MUFFLE-WARNING when no associated restart is present is now
3259 * optimization: rearranged the expansion of various defining macros
3260 so that each expands into only one top-level form in a
3261 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3263 * optimization: used a previously little-used slot in symbols to
3264 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3266 * fixed some bugs revealed by Paul Dietz' test suite:
3267 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3269 ** Fixed an optimization bug related to inheritance of initforms
3270 from local to shared slots.
3271 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3272 ** CAST optimizer forgot to flush argument derived type.
3273 ** print/read consistency on floats is now orders of magnitude
3274 more likely. (thanks also to Bruno Haible for a similar report
3276 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3277 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3278 for objects of type REAL. Make it so.
3279 ** SXHASH is specified (infelicitously) to respect similarity,
3280 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3281 it so. (thanks to Markus Ziegler)
3282 ** on the Alpha, the compiler succeeds in compiling functions
3283 returning a known number of arguments greater than 63.
3284 ** fixed handling of invalid NIL arguments in keyword position
3286 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3288 ** provided a readably-printable representation for RANDOM-STATE
3290 ** ensured that pathnames, where they have a namestring, always
3291 print using #P"..." syntax.
3293 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3294 * Support for the forthcoming 2.0 version of the NetBSD kernel
3295 running on x86 hardware has been added. (thanks to Perry
3296 E. Metzger most immediately, and others for their past work)
3297 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3298 current release version; SBCL's OpenBSD support had been broken
3299 since about the time of OpenBSD's switch to ELF binary format.)
3300 * [placeholder for DX summary]
3301 ** user code with &REST lists declared dynamic-extent, under high
3302 speed or space and low safety and debug optimization policy.
3303 * The manual has been converted to Texinfo format and the debugger
3304 chapter from the cmucl manual has been added.
3305 * A facility has been added to extract documentation strings from
3306 sbcl and store them as Texinfo-formatted snippets for inclusion in
3307 the manual (via Texinfo's @include directive)
3308 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3309 the test case to Dave Roberts)
3310 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3311 pointers. (reported by Sean Ross)
3312 * bug fix: PROFILE output is printed nicely even for large numerical
3313 values. (thanks to Zach Beane)
3314 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3315 greater than 32 handle EOF correctly.
3316 * bug fix: on X86 an immediate argument of the IMUL instruction is
3317 correctly printed in disassembly. (thanks to Lutz Euler)
3318 * bug fix: class slots in redefined classes preserve their old
3319 values. (thanks to Bruno Haible and Nikodemus Siivola)
3320 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3321 succeeds. (reported by Marco Baringer)
3322 * fixed some bugs revealed by Paul Dietz' test suite:
3323 ** READ-SEQUENCE now works on ECHO-STREAMs.
3324 ** RATIONALIZE works more according to its specification. (thanks
3327 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3328 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3329 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3330 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3331 should matter to you only if you rebind the printer control
3332 variables and then find you want different bindings in the
3333 debugger than in the ordinary execution of your program.)
3334 * The runtime build system has been tweaked to support building
3335 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3336 assembler and linker. (thanks to Nikodemus Siivola)
3337 * Unbound, undefined, undeclared variables now trigger full
3338 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3339 more often programmer error than deliberate exploitation of undefined
3341 * optimization: the hash algorithm for strings has changed to one
3342 that is less vulnerable to spurious collisions. (thanks to Juho
3344 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3345 needless bounds checking. (thanks to Juho Snellman)
3346 * optimization: implemented multiplication as a modular
3347 (UNSIGNED-BYTE 32) operation on the PPC backend.
3348 * fixed some bugs revealed by Paul Dietz' test suite:
3349 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3351 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3352 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3353 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3355 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3357 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3359 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3360 their output stream on EOF from read.
3361 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3362 have been read to end-of-file.
3363 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3365 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3366 description of determination of which consecutive characters
3368 ** Printing the "Space" character with escaping on now yields "#\\ ",
3369 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3370 ** Reading floating-point numbers with *READ-BASE* set to a number
3371 less than 10 works correctly.
3372 ** Reading floating-point numbers with *READ-BASE* set to a number
3373 more than 10 works correctly.
3374 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3375 the readtable currently in effect.
3377 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3378 * minor incompatible change: parsing of namestrings on a physical
3379 (Unix) host has changed; numbers after the final #\. in a
3380 namestring are no longer interpreted as a version field. This is
3381 intented to be largely invisible to the user, except that the
3382 meaning of the namestring "*.*.*" has changed: it now refers to a
3383 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3384 should usually be replaced by
3385 (make-pathname :name :wild :type :wild :version :wild)
3386 with the added benefit that this is more likely to be portable.
3387 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3388 option to OPEN now signals an error if the file being opened
3389 exists; this may have an impact on existing code.
3390 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3391 signals received, on the PowerPC platforms (both Linux and
3392 Darwin). (thanks to Pierre Mai for pointing out the location of
3394 * several fixes on OS X: The system now builds and runs cleanly on
3395 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3396 (thanks to Brian Mastenbrook)
3397 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3398 second-resolution: integer multiples of 1/3600 between -24 and 24.
3399 (thanks to Vincent Arkesteijn)
3400 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3401 type when called with 1 argument; PEEK-CHAR checked type of
3402 PEEK-TYPE only after having read first character from a
3403 stream. (reported by Peter Graves)
3404 * bug fix: the garbage collector now has much better locality
3405 behaviour, and in particular no longer treats all memory as being
3406 exhausted when many small objects point to each other in a deeply
3408 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3409 recognized as being TYPEP their class.
3410 * bug fix: the PUSHNEW documentation string has been corrected.
3411 (thanks to Vincent Arkesteijn)
3412 * bug fix: defaulting of the value for the last of an atypically
3413 large number of multiple values being bound was not being
3414 performed correctly on the Alpha or PPC platforms
3415 * optimization: implemented multiplication as a modular
3416 (UNSIGNED-BYTE 32) operation on the x86 backend.
3417 * optimization: SEARCH on simple-base-strings can now be open-coded.
3418 (see also contrib/compiler-extras.lisp for inspiration for
3419 teaching the compiler about the Boyer-Moore algorithm).
3420 * value, returned by MAX (and MIN) called with several EQUALP, but
3421 not EQL, arguments now does not depend on compiler settings.
3422 * fixed some bugs revealed by Paul Dietz' test suite:
3423 ** in stack analysis liveness information is propagated from
3424 non-local entry points.
3425 ** pathwise CAST removing failed when the CAST node did not start
3427 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3428 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3430 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3431 host is already defined.
3432 ** RENAME-FILE works on streams instead of signalling an internal
3434 ** PEEK-CHAR uses the current readtable when determining whether
3435 or not a character is whitespace.
3436 ** MERGE-PATHNAMES handles the case when the pathname does not
3437 specify a name while the default-pathname specifies a version.
3438 ** Pathnames now stand a better chance of respecting print/read
3440 ** Attempting to use standardized file system operators with a
3441 pathname with invalid :DIRECTORY components signals a
3443 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3445 ** DIRECTORY on logical pathnames is more correct.
3446 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3447 signal a TYPE-ERROR if their argument is not a stream.
3448 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3449 designator argument does not designate a stream.
3450 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3451 examining the synonym.
3452 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3454 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3455 element-type larger than ([UN]SIGNED-BYTE 32).
3457 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3458 * When built with the :SB-FUTEX feature, threaded builds now take
3459 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3460 for faster/more reliable mutex and condition variable support.
3461 * Incompatible change (but one you probably shouldn't have been using
3462 anyway): the interface and code for arbitrating between multiple
3463 threads in the same user session has been redesigned.
3464 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3465 error when called without an explicit environment argument.
3466 (thanks to Nikodemus Siivola)
3467 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3468 confused about their position. (thanks to Adam Warner and Gerd
3470 * bug fix: Pretty printing backquoted forms with unquotations in the
3471 argument list position of various code constructs such as LAMBDA
3472 now works correctly. (reported by Paul Dietz)
3473 * bug fix: Pretty printing unquotations no longer loses all
3474 stream position information.
3475 * optimization: performance of string output streams is now less
3476 poor for multiple small sequence writes.
3477 * optimization: performance of CSUBTYPEP in the presence of complex
3478 expressions involving CONS and NOT many times has been improved.
3479 (reported by Paul Dietz)
3480 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3482 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3483 streams for the REPL, for the debugger, and so on. (thanks to
3485 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3486 * fixed some bugs revealed by Paul Dietz' test suite:
3487 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3488 is ignored if it is too small, rather than propagating through
3489 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3490 ** extremely complex negations of CONS types were not being
3491 sufficiently canonicalized, leading to inconsistencies in
3493 ** VALUES tranformer lost derived type.
3495 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3496 * fixed a bootstrapping bug: the build process no longer assumes
3497 that the various BOOLE-related constants have the same value in
3498 host and target lisps. (noted by Paul Dietz' test suite on an
3499 SBCL binary built from CLISP)
3500 * The system can now be dynamically linked on the MIPS platform,
3501 which enables dynamic loading of foreign code from Lisp. (thanks
3502 to Ralf Baechle for discussions on the MIPS ABI)
3503 * The system now records debugging information for its own source
3504 files in a filesystem-position-independent manner, relative to
3505 the "SYS" logical host.
3506 * fixed a compiler bug: MV-LET convertion did not check references
3507 to the "max args" entry point. (reported by Brian Downing)
3508 * tweaked disassembly notes to be less confident about proclaiming
3509 some instruction as an LRA. (thanks to Brian Downing)
3510 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3511 now each have their own history, command character, and other
3512 characteristics. (thanks to David Lichteblau)
3513 * fixed some bugs revealed by Paul Dietz' test suite:
3514 ** compiler failure in compiling LOGAND expressions including a
3516 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3517 shift greater than 32.
3518 ** FLUSH-DEST did not mark blocks for type check regeneration.
3519 ** HANDLER-CASE failed to accept declarations in handler clauses
3520 in some circumstances.
3522 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3523 * New code in contrib/sb-introspect (still probably not entirely
3524 stable yet) provides some support for smart Lisp development
3525 environments like SLIME.
3526 * The conditions signalled for errors occurring when loading .fasl
3527 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3528 in a way which should help ASDF recover gracefully.
3529 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3530 stuff has been cleaned up. If you code contrib/ stuff, this might
3531 affect you, and you can look at contrib/README, contrib/STANDARDS,
3532 and/or the 0.8.4.27 diff to check.
3533 * In full calls the compiler now does not generate checks for declared
3534 argument types for all arguments.
3535 * various threading fixes
3536 ** and some experimental patches which didn't make it into
3537 the main tree for this release, but which are shipped in
3538 contrib/experimental-thread.patch as a possible fix for some
3539 failures (deadlock, spinning...) in GC-intensive multithreaded
3541 * fixed PPC build problem (source code incompatibility of different
3542 library versions): added offsetof() hackery which attempts to divine
3543 where glibc maintainers put uc_mcontext today
3544 * fixed bug 282: compiler does not trust type assertions while passing
3545 arguments to a full call.
3546 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3547 &OPTIONAL VALUES type parameter.
3548 * fix bug 214: algorithm for noting rejected templates is now more
3549 similar to that of template seletion. (also reported by rydis on
3551 * fixed bug 141b: printing backquoted information readably and prettily
3552 inserts a space where necessary.
3553 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3554 (CHARACTER 10) are now reported as errors, rather than propagated
3555 as unknown types. (reported by piso on #lisp)
3556 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3557 with values NIL and :ERROR. (thanks to Milan Zamazal)
3558 * fixed bug 191c: CLOS now does proper keyword argument checking as
3559 described in CLHS 7.6.5 and 7.6.5.1.
3560 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3561 longer raise an error; further, using a list as a for-as-arithmetic
3562 counter now raises a meaningful error.
3563 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3564 now understood by sequence creation functions such as MAKE-SEQUENCE
3566 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3567 a STRING-INPUT-STREAM.
3568 * compiler enhancement: SIGNUM is now better able to derive the type
3570 * type declarations inside WITH-SLOTS are checked. (reported by
3572 * fixed some bugs revealed by Paul Dietz' test suite:
3573 ** incorrect optimization of TRUNCATE for a positive first
3574 argument and negative second.
3575 ** compiler failure in let-convertion during flushing dead code.
3576 ** compiler failure while deriving type of TRUNCATE on an
3577 interval, containing 0.
3578 ** ASH of a negative bignum by a negative bignum count now returns
3580 ** intersection of CONS types now canonicalizes properly, fixing
3581 inconsistencies in SUBTYPEP.
3583 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3584 * incompatible change: The --disable-debugger command line
3585 option now clobbers the debugger at a more fundamental
3586 level, by redefining #'INVOKE-DEBUGGER instead of by
3587 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3588 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3589 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3590 enter the debugger REPL and then suffer recursive errors
3591 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3592 while under the new system, BREAK in --disable-debugger mode
3593 terminates the system just as an unhandled error would.
3594 * fixed compiler performance when processing loops with a step >1;
3595 * bug fix: DOCUMENTATION now retrieves generic function
3596 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3597 support has been systematized, and now supports the methods
3598 specified by ANSI, along with a default method and a method for
3599 slot documentation. (reported by Nathan Froyd)
3600 * bug fix: effective methods associated with a generic function are
3601 no longer cached over a change of that generic function's method
3602 combination. (reported by Andreas Fuchs)
3603 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3604 names a non-existent directory. (thanks to Andreas Fuchs)
3605 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3606 the PPC platform, lead to stack corruption; this has been fixed.
3607 (reported by Rainer Joswig)
3608 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3609 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3610 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3611 arithmetic in general, is now much more reliable on the PPC
3613 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3614 platform now returns the right answer.
3615 * optimization: restored some effective method precomputation in
3616 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3617 precomputation is now tunable.
3618 * optimization: compiler-internal data structure use has been
3619 reviewed, and changes have been made that should improve the
3620 performance of the compiler by about 20%.
3621 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3622 simple-base-strings and simple-bit-vectors is improved.
3623 * optimization: the optimization of 32-bit logical and arithmetic
3624 functions introduced in version 0.8.3 on the x86 has been
3625 implemented on the mips, ppc and sparc platforms; an
3626 implementation of the same facility, but for 64-bit arithmetic,
3627 has been added for the alpha.
3628 * microoptimization: the compiler is better able to make use of the
3629 x86 LEA instruction for multiplication by constants.
3630 * bug fix: in some situations compiler did not report usage of
3631 generic arithmetic in (SPEED 3) policy.
3632 * bug 145b fix: compiler used wrong type specifier while converting
3633 MEMBER-types to numeric.
3634 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3636 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3637 index argument now works properly on the Alpha platform.
3638 * bug fix: floating point exception treatment on the Alpha platform
3640 * bug fix: FILE-POSITION works much better on string input and
3641 output streams. (thanks to Nikodemus Siivola)
3642 * bug fix: many threading/garbage collection symptoms sorted.
3643 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3644 might be pseudo-atomic.
3645 * internal change: Stopping for GC is now done with signals not
3646 ptrace. GC is now done in whichever thread wanted it, instead of
3648 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3650 * bug fix: result form in DO is not contained in the implicit
3652 * incompatible change: ICR structure is changed; the value part of
3653 CONTINUATION is now called LVAR; corresponding functions are
3654 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3655 * added type deriver for ISQRT (thanks to Robert E. Brown).
3656 * bug fix: better support for loading from the command line when an
3657 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3659 * fixed some bugs revealed by Paul Dietz' test suite:
3660 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3661 ** ROUND and FROUND now give the right answer when given very
3662 small float arguments.
3663 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3665 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3666 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3667 ** LCM should return a non-negative integer.
3668 ** PARSE-INTEGER returned the index of a terminator instead of the
3669 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3670 ** PARSE-INTEGER returned an incorrect index being applied to a
3672 ** LCM with two arguments of 0 returns 0 rather than signalling
3674 ** unsigned addition of a 32-bit constant with the high bit set no
3675 longer causes an internal compiler error on the x86.
3676 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3677 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3678 with negative last argument.
3679 ** byte specifiers with zero size and position no longer cause
3680 an error during type derivation.
3681 ** bignum multiplication on the Alpha platform now returns the
3683 * porting: The system now builds on SuSE AMD64, although it still
3684 generates a 32-bit binary.
3685 * .fasl file incompatibility: The fasl file version number has
3686 been incremented (because of the changes to internal compiler
3687 data structures referred to above).
3689 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3690 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3691 more accurately, on the Darwin kernel running on PowerPC hardware.
3692 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3693 * Compiler code deletion notes now signal a condition of type
3694 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3695 an associated MUFFLE-WARNING restart.
3696 * The compiler now performs limited argument count validation of
3697 constant format strings in FORMAT, and where appropriate in ERROR,
3698 CERROR and WARN. (thanks to Gerd Moellmann)
3699 * New ASDF-INSTALL contrib can be used for automatic download and
3700 installation of third-party Lisp code from CCLAN or other sites
3702 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3703 which forces another thread to execute a function supplied by the
3705 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3706 now accept and act upon their :ELEMENT-TYPE keyword argument.
3707 (reported by Martin Atzmueller, Edi Weitz)
3708 * bug fix: FILE-POSITION now accepts position designators up to
3709 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3710 is the greater. (thanks to Patrik Nordebo)
3711 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3712 Kalle Olavi Niemitalo)
3713 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3714 printable. (reported by Eric Marsden)
3715 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3716 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3717 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3718 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3719 (thanks to Stig Sandoe)
3720 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3721 UNREAD-CHAR now correctly includes the unread character in the
3722 target sequence. (thanks to Gerd Moellmann)
3723 * bug fix in threaded builds: the system can now be suspended and
3724 resumed by shell job control with minimal disruption.
3725 * bug fixes in times and timezones >2038AD
3726 * better handling of "where is GNU make?" problem in build scripts
3727 (thanks to Nikodemus Siivola)
3728 * new optimization: inside a named function any reference to a
3729 function with the same name is considered to be a self-reference;
3730 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3731 optimization quality.
3732 * new optimization on x86: logical functions and + now have
3733 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3734 used when the result is truncated to 32 bits.
3735 * VALUES declaration is partially enabled.
3736 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3737 * fixed some bugs revealed by Paul Dietz' test suite:
3738 ** The system now obeys the constraint imposed by
3739 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3740 types form a lattice under type intersection.
3741 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3742 ** ASSOC now ignores NIL elements in an alist.
3743 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3744 and (1+ MOST-POSITIVE-FIXNUM) answers.
3745 ** The addition of a method with invalid qualifiers to a generic
3746 function does not cause an error to be signalled immediately;
3747 a warning is signalled, and the error is generated only on
3748 calling the generic function.
3749 * changed .fasl file version number, in part to add type codes for
3750 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3751 obscure ANSI requirements
3753 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3754 * fixed bug 148: failure to inline-expand a local function left
3755 garbage, confusing the compiler.
3756 * fixed bugs 3cd: structure slot readers perform type check if the
3757 slot can have an invalid value (i.e. it is either not initialized
3758 or can be written with a less specific slot writer).
3759 * bug fix: the compiler now traps array references to elements off
3760 the end of an array; previously, the bounds checking in some
3761 circumstances could go off-by-one.
3762 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3764 * type declarations for array element types now obey the description
3765 on the CLHS page "Declaration TYPE", as per discussions on
3766 sbcl-help around 2003-05-08. This means that a declaration
3767 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3768 declaration, all references to BAR will be asserted or assumed
3769 (with THE, so dependent on compiler policy) to involve objects of
3770 type FOO. Note that no such declaration is implied in
3771 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3772 * declared types of functions from the "Conditions"
3773 chapter. (reported by Paul Dietz)
3774 * bug fix: CERROR accepts a function as its first argument.
3775 * bug fix: NTH an NTHCDR accept a bignum as index
3776 arguments. (reported by Adam Warner)
3777 * optimization: character compare routines now optimize comparing
3778 against a constant character. (reported by Gilbert Baumann)
3779 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3780 argument now works properly on the MIPS platform.
3781 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3782 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3783 declared to have a functional type, does not cause an error
3785 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3786 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3787 * fixed bug: if last continuation of a deleted block has a
3788 destination, this destination should be deleted too. (reported by
3790 * fixed a bug in the bootstrap process: the host compiler's values
3791 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3792 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3793 test case from Patrik Nordebo)
3794 * improved the ability of the disassembler on the PPC platform to
3795 provide helpful disassembly notes.
3796 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3797 the class in more cases than previously.
3798 * bug fix: FILE-POSITION now understands :START and :END for
3799 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3800 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3801 8) data. (thanks to David Lichteblau)
3802 * bug fix: it is possible to add a method to a generic function
3803 without lambda list.
3804 * bug fix: reader failed to signal END-OF-FILE inside an
3805 object representation. (reported by Nikodemus Siivola)
3806 * fixed some bugs revealed by Paul Dietz' test suite:
3807 ** LAST and [N]BUTLAST should accept a bignum.
3808 ** condition slot accessors are methods.
3809 ** (VECTOR NIL) is a subtype of STRING.
3811 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3812 * minor incompatible change: some nonsensical specialized lambda
3813 lists (used in DEFMETHOD) which were previously ignored now signal
3815 * minor incompatible change: the system is now aware of the types of
3816 variables in the COMMON-LISP package, and will signal errors for
3817 most violations of these type constraints (where previously they
3818 were silently accepted).
3819 * minor incompatible change: COMPILE-FILE now uses the freedom
3820 afforded (ANSI 3.2.2.3) to use derived function types for
3821 functions defined in the same file. This also permits the system
3822 to warn on static type mismatches and function
3823 redefinition. (Currently it does not work with high DEBUG level.)
3824 * minor incompatible change: VALUES declaration is disabled.
3825 * When issuing notes, the compiler now signals a condition of type
3826 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3827 restart for use in user handlers. It is expected that the
3828 COMPILER-NOTE condition will eventually become a condition
3829 supertype to a hierarchy of note types, which will then be
3830 handleable in a similar fashion. However, at the moment, no such
3831 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3832 but it's an implementation detail, not a classification for the
3834 * Changes in type checking closed the following bugs:
3835 ** type checking of unused values (192b, 194d, 203);
3836 ** template selection based on unsafe type assertions (192c, 236);
3837 ** type checking in branches (194bc).
3838 * A short form of VALUES type specifier has ANSI meaning (it has
3839 increased the number of situations when SBCL cannot perform type
3841 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3842 keywords or constants is permissible.
3843 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3844 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3845 classes. (thanks to Antonio Martinez)
3846 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3847 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3848 argument to a pretty-print stream. Instead, it leaves any such
3849 operations to DESCRIBE-OBJECT methods.
3850 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3852 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3853 lambda lists. (thanks to David Lichteblau)
3854 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3855 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3856 (thanks to Gerd Moellmann)
3857 * fixed bug 246: increased compilation speed of long
3858 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3860 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3862 * DEFCONSTANT now throws a condition of type
3863 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3864 constant to a non-EQL value; CONTINUE and ABORT restarts
3865 respectively change and preserve the value.
3866 * fixed bug 63: The code walker, part of the implementation of CLOS,
3867 is now better at handling symbol macros.
3868 * bug fix: There is no longer an internal implementation type named
3869 CL:LENGTH. (reported by Raymond Toy)
3870 * bug fix: In macro-like defining macros/special operators the
3871 implicit block does not enclose the lambda list.
3872 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3873 enclosed in parentheses) are not suitable as type specifiers, and
3874 their use properly signals an error now.
3875 * bug fix: An argument count mismatch for a type specifier in code
3876 being compiled no longer causes an unhandled error at compile
3877 time, but signals a compile-time warning.
3878 * fixed simple vector readable printing
3879 * bug fix: DESCRIBE takes more care over whether the class
3880 precedence list slot of a class is bound before accessing it.
3881 (reported by Markus Krummenacker)
3882 * bug fix: FORMATTER can successfully compile pretty-printer format
3883 strings which use variants of the ~* directive inside.
3884 * bug fix: SEARCH now applies its TEST predicate to the elements of
3885 the arguments in the correct order. (thanks to Wolfhard Buss)
3886 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3887 in type inference. (thanks to Robert E. Brown)
3888 * bug fix: Reading in symbols with an explicit package name of ""
3889 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3890 * fixed some bugs revealed by Paul Dietz' test suite:
3891 ** NIL is now allowed as a structure slot name.
3892 ** Arbitrary numbers, not just REALs, are allowed in certain
3893 circumstances in LOOP for-as-arithmetic clauses.
3894 ** Multiple class redefinitions before slot access no longer
3895 causes a type error.
3896 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3897 association between the name and a class.
3898 ** Generic functions with non-standard method-combination and over
3899 five methods all of which return constants no longer return NIL
3900 after the first few invocations. (thanks to Gerd Moellmann)
3901 ** CALL-NEXT-METHOD with no arguments now passes the original
3902 values of the arguments, even in the presence of assignment.
3903 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3905 ** DISASSEMBLE works with closures and funcallable instances.
3906 ** ADD-METHOD now returns the generic function, not the new method.
3907 ** FIND-METHOD signals an error if the lengths of the specializers
3908 is incompatible with the generic function, even if the ERRORP
3910 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3911 which its argument is a member.
3912 ** DEFCLASS only redefines the class named by its class-name
3913 argument if that name is the proper name of the class;
3914 otherwise, it creates a new class.
3915 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3916 of the UNBOUND-SLOT condition to the name of the slot.
3917 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3918 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3919 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3920 SLOT-MAKUNBOUND in the specified fashion.
3922 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3923 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3924 cross-compilation host. As a consequence, we can now bootstrap our
3925 way up to SBCL starting with a bare gcc toolchain and human-readable
3926 source code (first the source to CLISP, then the source to SBCL).
3927 * A contributed module containing a partial implementation of the
3928 simple-streams interface has been included. (thanks to Rudi
3930 * A contributed module implementing the RFC1321 Message Digest
3931 Algorithm, known as MD5, has been included.
3932 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3933 no longer has any effect, as the code controlled by this feature
3934 has been deleted. (As far as we know, no-one has ever built using
3935 this feature, and its semantics were confused in any case).
3936 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3937 work on conditions (as required by the ANSI specification),
3938 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3939 expected behaviour on conditions. Users should note, however,
3940 that such behaviour is not required by the ANSI specification,
3941 and so use of this behaviour may render their code unportable.
3942 * fixed some bugs revealed by Paul Dietz' test suite:
3943 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3945 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3946 ** SXHASH on condition objects no longer returns NIL.
3947 ** :ALLOCATION :CLASS slots are better treated; their values are
3948 updated on class redefinition, and initforms inherited from
3949 superclasses are applied.
3950 ** REMOVE-METHOD returns its generic function argument even when
3951 no method was removed.
3952 ** SHARED-INITIALIZE now initializes the values of the requested
3953 slots, including those with :ALLOCATION :CLASS.
3954 ** ALLOCATE-INSTANCE now works on structure classes defined via
3955 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3957 ** SLOT-EXISTS-P now works on conditions, as well as structures
3959 ** MAKE-LOAD-FORM now has the required methods on
3960 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3961 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3962 keyword, and now implements the SLOT-NAMES argument.
3963 ** methods with &OPTIONAL arguments no longer allow too many
3964 arguments to be passed in the call without error.
3965 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3966 option is consistent with the required arguments of the generic
3967 function lambda list.
3968 * bug fix: REQUIRE accepts a string designator. (Thanks to
3970 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3971 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3972 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3973 * bug fix: The compiler now checks for duplicated variables in macro
3975 * bug fix: SETQ on globals returns the correct value.
3976 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3977 not a COMPILER-ERROR (followed by some other strange error on
3978 choosing the CONTINUE restart).
3979 * bug fix: make.sh and friends are now more consistent in the way that
3980 they look for GNU "make".
3982 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3983 * experimental native threads support (on x86 Linux >=2.4 only).
3984 This is not compiled in by default: you need to add :SB-THREAD to
3985 the target features. See the "Beyond ANSI" chapter of the manual
3987 * fix for longstanding nonANSIism: The old distinction between
3988 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3989 The return value from CL:FIND-CLASS is now a CLOS class, and
3990 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3991 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3992 * An interface to the MetaObject Protocol, as described in Kiczales,
3993 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3994 MIT Press, 1991, is available from the SB-MOP package.
3995 * incompatible change: the SB-PCL package should now be considered
3996 a private implementation detail, and no longer a semi-private MOP
3998 * minor incompatible change: due to rearrangement for threads, the
3999 control stack and binding stack are now allocated at arbitrary
4000 addresses instead of being hardcoded per-port. Users affected by
4001 this probably have to be doing advanced things with shared
4002 libraries, and will know who they are.
4003 * minor incompatible change: Previously, all --eval forms used were
4004 processed with READ before any of them were processed with EVAL.
4005 Now each --eval form is processed with both READ and EVAL before
4006 the next --eval form is processed. (Thus package operations like
4007 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4008 work as the user might reasonably expect.)
4009 * minor incompatible change: *STANDARD-INPUT* is now only an
4010 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4012 * minor incompatible change: Y-OR-N-P is now character-oriented,
4013 not line oriented. Also, YES-OR-NO-P now works without errors.
4014 (thanks to Antonio Martinez)
4015 * sb-aclrepl module improvements: an integrated inspector, added
4016 repl features, and a bug fix to :trace command.
4017 * Known functions, which cannot be open coded by the backend, are
4018 considered to be able to check types of their arguments. (fixing
4019 a bug report by Nathan J. Froyd)
4020 * fixed a bug in computing method discriminating functions: It is
4021 now possible to define methods specialized on classes which have
4022 forward-referenced superclasses. (thanks to Gerd Moellmann)
4023 * fixed evaluation order in optional entries (reported by Gilbert
4025 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4026 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4027 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4028 required-by-AMOP NAME argument, as well as CLASS and
4029 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4030 * fixed bug 20: DEFMETHOD can define methods using names that are
4031 not the proper names of classes to designate class specializers.
4032 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4033 Unix file descriptors, instead of blowing up. (thanks to Antonio
4035 * Garbage collection refactoring: user-visible change is that a
4036 call to the GC function during WITHOUT-GCING will not do garbage
4037 collection until the end of the WITHOUT-GCING. If you were doing
4038 this you were probably losing anyway.
4039 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4040 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4041 TYPEP the latter but not the former.
4042 * The compiler issues a full WARNING for calls to undefined functions
4043 with names from the CL package.
4044 * MAP-INTO for a vector destination is open coded. (reported by
4045 Brian Downing on c.l.l)
4046 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4047 documentation string.
4048 * fixed some bugs revealed by Paul Dietz' test suite:
4049 ** COPY-ALIST now signals an error if its argument is a dotted
4051 ** Condition slots are now accessed more correctly in the presence
4052 of multiple initargs for a given slot.
4053 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4054 exclude restarts of the same name associated with a different
4056 ** DEFCLASS of forward-referenced classes with another
4057 forward-referenced class in the superclasses list no longer
4059 ** Condition slots are now initialized once each, not multiple
4060 times. (thanks to Gerd Moellmann)
4061 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4063 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4064 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4065 arguments contain duplicated elements.
4066 ** RESTART-CASE understands local macros.
4067 ** RESTART-CASE associates exactly its own restarts with a condition.
4068 ** ENDP in safe mode checks its argument to be of type LIST.
4069 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4070 in question is unbound.
4071 ** Optimized MAKE-INSTANCE functions no longer cause internal
4072 assertion failures in the presence of duplicate initargs.
4073 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4074 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4075 propagated even in the ctor optimized implementation of
4077 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4079 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4080 * a better implementation of SXHASH on (simple) bit vectors,
4081 measured both in execution speed and in distribution of results
4082 over the positive fixnums, has been installed. Likewise, a better
4083 implementation of EQUAL for simple bit vectors is now available.
4084 * fixed CEILING optimization for a divisor of form 2^k.
4085 * fixed bug 240 (emitting extra style warnings "using the lexical
4086 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4087 by Antonio Martinez)
4088 * fixed SXHASH, giving different results for NIL depending on type
4089 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4090 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4091 variable. (found by Rolf Wester)
4092 * SBCL does not ignore type declarations for special
4093 variables. (reported by rif on c.l.l 2003-03-05)
4094 * some bug fixes in contrib/sb-aclrepl/
4095 * fixed some bugs revealed by Paul Dietz' test suite:
4096 ** a bug in the CONS type specifier, whereby the CAR and CDR
4097 types got intertwined, has been fixed;
4098 ** the type system is now able to reason about the interaction
4099 between INTEGER and RATIO types more completely;
4100 ** APPEND, [N]REVERSE and NRECONC check that those their
4101 arguments, which must be proper lists, are really so;
4102 ** An array specialized to be unable to hold elements has been
4103 implemented, as required -- yes, really -- by ANSI;
4104 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4105 on malformed property lists;
4107 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4108 * incompatible packaging change: in line with Unix convention,
4109 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4110 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4111 * REQUIRE and PROVIDE are now optionally capable of doing something
4112 useful. See the documentation string for REQUIRE.
4113 * infrastructure for a managed SBCL contrib system: contributed
4114 modules in this release include:
4115 ** the ASDF system definition facility;
4116 ** an interface to the BSD Sockets API;
4117 ** an ACL-like convenience interface to the repl;
4118 (thanks to Kevin Rosenberg)
4119 ** an implementation of ROTATE-BYTE, with efficient implementation
4121 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4122 gives a closer approximation to the right answer than previously.
4123 (thanks to Raymond Toy)
4124 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4125 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4126 optional environment arguments, as required by ANSI.
4127 * fixed bugs in other functions taking environment objects, allowing
4128 calls with an explicit NIL environment argument to be compiled
4130 * fixed bug 228: primary return values from
4131 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4132 COMPILE or FUNCTION.
4133 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4134 :TYPE will no longer signal errors on innocuous objects.
4135 * fixed bug 231b: SETQ is better at respecting type declarations in
4136 the lexical environment.
4137 * fixed a bug in DEFCLASS: classes named by symbols with no or
4138 unprintable packages can now be defined.
4139 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4140 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4141 * fixed compiler failure related to checking types of functions.
4142 (reported by Robert E. Brown)
4143 * the compiler is now much more consistent in its error-checking
4144 treatment of bounding index arguments to sequence functions: in
4145 (SAFETY 3) code, errors will be signalled in almost all cases if
4146 invalid sequence bounding indices are passed to functions defined
4147 by ANSI to operate on sequences.
4148 * fixed a bug in the build procedure: documentation of SBCL-specific
4149 packages is now preserved and available in the final Lisp image.
4150 * lifted FDEFINITION lookup out of loops in the implementation of
4151 many list operations. (thanks to Robert E. Brown)
4152 * fixed a bug in the reader: the #n# reader macro now works for
4153 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4154 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4155 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4156 E. Brown and Tony Martinez respectively)
4157 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4158 SLOT-BOUNDP: in particular, it is now able to optimize them much
4159 better, and is now not vulnerable to having packages renamed.
4160 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4161 always called when a slot is not present in an instance. (thanks
4163 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4164 longer signal an error on unreading a character following EOF on
4165 the previous constituent stream. (thanks to Tony Martinez)
4166 * fixed some bugs revealed by Paul Dietz' test suite:
4167 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4168 not just nonnegative fixnums;
4169 ** the logical bit-array operators such as BIT-AND now accept an
4170 explicit NIL for their "opt-arg" argument (to indicate a
4171 freshly-consed result bit-array);
4172 ** ELT now signals an error on an invalid sequence index in safe
4174 ** the type system is now cleverer about negations of numeric
4175 types, and consequently understands the BIGNUM and RATIO types
4177 ** the type system is now cleverer about the interaction between
4178 INTEGER and RATIO types: while bugs still remain, many more
4179 cases are accurately computed;
4180 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4181 if it is in the last clause;
4182 ** CONSTANTLY now correctly returns a side-effect-free function in
4184 ** DECLARE is no longer treated as a special-operator; in
4185 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4186 * incremented fasl file version number due to the change in the
4187 DEFSTRUCT-SLOT-DESCRIPTION structure.
4189 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4190 * minor incompatible change: code processed by the "interpreter" or
4191 EVAL now has a compilation optimization policy of (DEBUG 2)
4192 (changed from (DEBUG 1)) to improve debuggability of interactive
4193 development, and to allow the use of the debug RETURN command in
4195 * an experimental implementation of the RETURN command for the
4196 debugger has been included. (thanks to Frederik Kuivinen)
4197 * fixed bug 62: constraints were not propagated into a loop.
4198 * fixed bug in embedded calls of SORT (reported and investigated by
4200 * fixed some bugs revealed by Paul Dietz' test suite:
4201 ** printing and reading of arrays with some dimensions having
4202 length 0 (thanks to Gerd Moellmann);
4203 ** BOA constructor with &AUX argument without a default value does
4204 not cause a type error;
4205 ** CONSTANTP now returns true for all self-evaluating objects.
4207 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4208 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4209 accessors that are related by inheritance, as specified in the
4210 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4211 Valtteri Vuorikoski)
4212 * The compiler is now able to inline functions that were defined in
4213 a complex lexical environment (e.g. inside a MACROLET).
4214 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4216 * Support for the upcoming FreeBSD-5.0 release has been included.
4217 (thanks to Dag-Erling Smorgrav)
4218 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4219 effect when it is not in a toplevel context.
4220 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4221 stand a better chance of being correct. (thanks to Gerd
4223 * fixed bug in COERCE, which now signals an error on coercing a
4224 rational to a bounded real type which excludes the expected
4226 * The compiler is now able to derive types more accurately from the
4227 COERCE and COMPILE functions.
4228 * fixed bug 223: functional binding is considered to be constant
4229 only for symbols in the CL package.
4230 * fixed bug 231: SETQ did not check the type of a variable being set
4231 (reported by Robert E. Brown)
4232 * A new optimization for MAKE-INSTANCE has been included, fixing
4233 various bugs (including relating to :ALLOCATION :CLASS slots and
4234 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4236 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4237 ** As required by ANSI, LOOP now disallows anonymous collection
4238 clauses such as COLLECT I in conjunction with aggregate boolean
4239 clauses such as THEREIS (= I 1);
4240 ** LOOP now signals an error when any variable is reused in the
4241 same loop (including the potentially useful construct analogous
4242 to WITH A = 1 WITH A = (1+ A);
4243 ** IT is only a special loop symbol within the first clause of a
4244 conditional loop clause;
4245 ** LOOP with a typed iteration variable over a hashtable now
4246 signals a type error iff it should.
4247 * fixed some other bugs revealed by Paul Dietz' test suite:
4248 ** FILE-STREAM now names the class previously known as FD-STREAM;
4249 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4250 argument) no longer signals an error;
4251 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4252 of the slot symbol, rather than using the current package
4253 ((:CONC-NAME "") continues to intern the slot's name in the
4255 * incremented fasl file version number, because of the incompatible
4256 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4257 of the new implementation of DEFINE-COMPILER-MACRO.
4259 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4260 * Support for building SBCL for MIPS platforms running in
4261 little-endian mode has now been checked in, and basic
4262 functionality on said platforms verified.
4263 * minor incompatible change: PCL now records the pathname of a file
4264 in which methods and the like are defined, rather than its
4266 * minor incompatible change: TRUENAME now considers the truename of
4267 a file naming a directory to be the pathname with :DIRECTORY
4268 component indicating that directory.
4269 * minor incompatible change: a NAMED clause in the extended form of
4270 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4271 reason for the previous behaviour is unclear.
4272 * more systematization and improvement of CLOS and MOP conformance
4273 in PCL (thanks to Gerd Moellman and Pierre Mai):
4274 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4276 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4277 primary methods with no specializers;
4278 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4280 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4281 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4282 FORWARD-REFERENCED-CLASSes; error reporting on
4283 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4285 ** SXHASH on CLOS instances now uses a slot internal to the
4286 instance to return different numbers on distinct instances,
4287 while preserving the same return value through invocations of
4289 ** DEFMETHOD signals errors when methods with longer incongruent
4290 lambda lists are added to generic functions;
4291 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4292 CLASS, as specified in AMOP;
4293 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4294 on the order returned by the primary method for classes of
4295 class STANDARD-CLASS;
4296 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4297 * fixed some bugs shown by Paul Dietz' test suite:
4298 ** DOLIST puts its body in TAGBODY;
4299 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4301 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4302 value producing form;
4303 ** if more variables are given to PROGV than values, extra
4304 variables are bound and made to have no value;
4305 ** NSUBSTITUTE on list arguments gets the right answer with
4307 ** ELT signals an error of type TYPE-ERROR when the index argument
4308 is not a valid sequence index;
4309 ** LOOP signals (at macroexpansion time) an error of type
4310 PROGRAM-ERROR when duplicate variable names are found;
4311 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4312 ** FUNCALL of special-operators now cause an error of type
4314 ** PSETQ now works as required in the presence of side-effecting
4315 symbol-macro places;
4316 ** NCONC accepts any object as its last argument;
4317 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4319 ** loop-for-as-package does not require a package to be explicitely
4321 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4323 * fixed bug 166: compiler preserves "there is a way to go"
4324 invariant when deleting code.
4325 * fixed bug 172: macro lambda lists with required arguments after
4326 &REST arguments now cause an error to be signalled. (thanks to
4328 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4329 bug. (thanks to Matthew Danish)
4330 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4332 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4333 arguments are lexically rebound. (thanks to Gerd Moellmann and
4335 * fixed bug 194: error messages are now more informative when there
4336 is no primary method applicable in a call to a generic
4337 function. (thanks to Gerd Moellmann)
4338 * fixed bug in command line argument checking (thanks to Julian
4340 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4341 (thanks to Matthew Danish)
4342 * incremented fasl file version number, because of the
4343 SXHASH-related changes in the layout of CLOS data structures
4345 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4346 * minor incompatible change: The runtime (the Unix executable named
4347 "sbcl") is now much pickier about the .core files it will load.
4348 Essentially it now requires .core files to descend from the same
4349 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4350 as the runtime does. (The intent is to prevent the crashes which
4351 can occur, and which can even be reported as mysterious failures,
4352 when people patch the sources or change the build parameters
4353 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4354 sbcl and .core files.)
4355 * fixed bug: VALUES-LIST is no longer optimized away.
4356 * fixed bug 142: The FFI conversion of C string values to Lisp
4357 string values no longer conses excessively. (thanks to Nathan
4358 Froyd porting Raymond Toy's fix to CMU CL)
4359 * began to systematize and improve MOP conformance in PCL (thanks to
4360 Nathan Froyd, Gerd Moellman and Pierre Mai):
4361 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4363 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4364 ** FINALIZE-INHERITANCE is now called on class finalization;
4365 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4366 argument precedence order.
4367 * fixed bug 202: The compiler no longer fails on functions whose
4368 derived types contradict their declared type.
4369 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4370 so it can be non-toplevel.
4371 * The fasl file version number has changed (because of the new
4372 implementation of DEFMACRO).
4373 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4374 safe code, that any length requirement by their type-specifier
4375 argument is valid. The exceptions to this are described in bug
4377 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4378 functions now check the types of their inputs as required by ANSI.
4379 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4380 introduced symbol is DECLAREd to be SPECIAL.
4381 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4382 * fixed bug: :COUNT argument to sequence functions may be negative
4383 * fixed bug: body of DO-SYMBOLS may contain declarations
4384 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4385 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4386 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4387 symbol macro only once
4388 * fixed printing of call frame when argument list is unavailable
4389 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4390 * compiler no longer signals WARNING on unknown keyword
4393 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4394 * A beta-quality port to the mips architecture running Linux,
4395 based on the old CMUCL backend, has been made. It has been tested
4396 on a big-endian kernel, and works sufficiently well to be able to
4397 rebuild itself; it has not been tested in little-endian mode.
4398 * fixed an inconsistency between gencgc.c and purify.c which made
4399 dumping/loading .core files unreliable
4400 * fixed bug 120a: The compiler now deals correctly with IFs where
4401 the consequent is the same as the alternative, instead of
4402 misderiving the return type. (thanks to Alexey Dejneka)
4403 * fixed bug 113: Logical pathnames are now dumpable (the logical
4404 host is resolved at load-time, throwing an error if it is not
4406 * fixed bug 174: FORMAT's error message is slightly clearer when a
4407 non-printing character is used in a format directive.
4408 * fixed several bugs in compiler checking of type declarations, i.e.
4409 violations of the Python "declarations are assertions" principle
4410 (thanks to Alexey Dejneka)
4411 * fixed several bugs in PCL's error checking (thanks to Gerd
4413 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4415 * fixed bug in compilation of functions as first class values
4416 (thanks to Antonio Martinez-Shotton)
4417 * The compiler's handling TYPE-ERRORs which it can prove will
4418 inevitably happen at runtime has been cleaned up and corrected
4419 in several ways. (thanks to Alexey Dejneka)
4420 * improved argument type checking for various basic arithmetic
4421 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4422 lavished on them in the past that they can be compiled in many
4423 ways in different special cases
4424 * fixed bug 181: compiler checks validity of user supplied type
4426 * cleaned up code flushing in optimization: Function calls which
4427 should signal errors for safety purposes (e.g. which ANSI says
4428 should signal errors when their arguments are of incorrect type)
4429 are no longer optimized away.
4430 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4431 * incremented fasl file version number, because changes in the
4432 implementation of sequence functions like COERCE caused
4433 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4434 in old inline expansions) to become undefined. (Actually these
4435 changes were later undone, so we might very well be binary
4436 compatible with 0.7.7 after all, but leaving the version number
4437 incremented seemed like the simplest and most conservative
4440 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4441 * An alpha-quality port to the parisc architecture running Linux,
4442 based on the old CMUCL backend, has been made. This, even more so
4443 than the other backends, should be considered still a work in
4444 progress; known problems include that the Linux kernel in 64-bit
4445 mode does not propagate the correct sigcontext structure to
4446 userspace, and consequently SBCL on a parisc64 kernel will not
4448 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4449 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4450 suppressed.) Also now that the compiler is looking at declarations
4451 in the environment, it checks optimization declarations as well,
4452 and suppresses inlining when (> DEBUG SPEED).
4453 * More fixes have been made to treatment of floating point exception
4454 treatment and other Unix signals. In particular, floating point
4455 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4456 * The detection and handling of control stack exhaustion (infinite
4457 or very deeply nested recursion) has changed. Stack exhaustion
4458 detection is now done by write-protecting pages at the OS level
4459 and applies at all optimization settings; when found, a
4460 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4461 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4462 be caught using IGNORE-ERRORS.
4463 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4464 correctly when transforming recursive LABELS functions to LETs.
4465 (thanks to Alexey Dejneka)
4466 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4467 that are names of constants or global variables.
4468 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4469 alien routines with docstrings.
4470 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4471 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4473 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4474 (thanks to Eric Marsden)
4475 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4476 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4477 * Bug fix: The SPARC backend can now compile functions involving
4478 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4479 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4480 to a functions expecting a PATHNAME-DESIGNATOR.
4481 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4482 lambda lists. (thanks to Alexey Dejneka)
4483 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4484 functions so that EXPORTing the name of the class doesn't cause
4485 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4486 to Antonio Martinez for reporting this)
4487 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4488 constant-folded without failing an assertion. (thanks to Einar
4489 Floystad Dorum for reporting this)
4490 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4491 types are now dealt with more correctly by the compiler.
4492 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4493 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4494 behaviour analogous to RENAME-FILE. This puts its behaviour more
4495 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4497 * The fasl file version number has changed again. (because of the
4498 bug fix involving the names of PCL MAKE-INSTANCE functions)
4500 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4501 * bug fix: Floating point exceptions are treated much more
4502 consistently on the x86/Linux and PPC/Linux platforms.
4503 * Array initialization with :INITIAL-ELEMENT is now much faster for
4504 cases when the compiler cannot open code the array creation, but
4505 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4506 array accesses have also seen a speed increase.
4507 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4508 specified. (This was at the root of some bad interactions between
4509 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4511 * bug fix: Internal error arguments for undefined functions are now
4512 computed correctly on the PPC/Linux platform.
4513 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4514 Raymond Toy's patch for CMU CL)
4515 * Support for the Solaris 9 operating environment has been included
4516 (thanks to Daniel Merritt)
4517 * A very ugly but hopefully complete draft of the missing FFI chapter
4518 of the manual has been created by reformatting the corresponding
4519 CMU CL manual chapter into (currently very ugly and incoherent)
4520 DocBook and bringing it up to date for SBCL behavior. Thus, the
4521 manual is now essentially complete, at least by my extreme
4522 once-and-only-once standards, whereby it's acceptable to refer to
4523 the doc strings of SB-EXT functions as the primary documentation.
4524 * The fasl file version number has changed again, due to cleanup of
4525 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4526 is no longer a static symbol.)
4528 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4529 * SBCL now builds with OpenMCL (version 0.12) as the
4530 cross-compilation host; also, more progress has been made toward
4531 bootstrapping under CLISP.
4532 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4534 * bug 158 fixed: The compiler can now deal with integer loop
4535 increments different from 1; fixing this turned out also to fix
4537 * bug 169 fixed: no more bogus warnings about using lexical bindings
4538 despite the presence of perfectly good SPECIAL declarations (thanks
4539 to David Lichteblau)
4540 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4541 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4542 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4544 * bug 180 fixed: Method combination specifications no longer ignore
4545 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4546 * bug fix: Structure type predicate functions now check their argument
4547 count as they should.
4548 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4549 correctly. (thanks to Pierre Mai)
4550 * minor incompatible change: The --noprogrammer option is deprecated
4551 in favor of the new --disable-debugger option, which is very similar.
4552 (The major difference is that it takes effect at a slightly different
4553 time at startup, causing handling of errors in --sysinit and
4554 --userinit files will be affected differently.) The
4555 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4556 been added to allow this functionality to be controlled from ordinary
4557 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4558 maintainers, who might want to run non-interactive scripts to
4559 build SBCL cores which will later be used interactively.)
4560 * minor incompatible change: The LOAD function no longer, when given
4561 a wild pathname to load, loads all files matching that pathname.
4562 Instead, an error of type FILE-ERROR is signalled.
4564 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4565 * bug 147 fixed: The compiler preserves its block link/count
4566 invariants more correctly now so that it doesn't crash. (thanks
4568 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4570 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4571 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4572 no-value-for-this-character as NIL (as specified by ANSI).
4573 * HOST-NAMESTRING on physical pathnames now returns a string that is
4574 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4575 (thanks to Christophe Rhodes)
4576 * The Alpha port handles icache flushing more correctly. (thanks to
4578 * More progress has been made toward bootstrapping under CLISP. (thanks
4579 to Christophe Rhodes)
4580 * The fasl file format has changed again, because dynamic loading
4581 on OpenBSD (which has non-ELF object files) motivated some cleanups
4582 in the way that foreign symbols are transformed and passed around.
4583 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4584 is no longer treated as whitespace by the reader, but instead as
4585 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4586 |A
\7fB|, instead of A as it used to.
4588 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4589 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4590 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4591 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4592 this as of 0.7.1.45, but was left out of the previous news section
4593 (thanks to Dan Barlow)
4594 * SBCL now runs on the Solaris operating system on SPARC architectures
4595 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4596 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4597 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4598 * SPARC backend cleanups, allowing builds of cores optimized for V8
4599 and V9 SPARCS, and also emission of code targeted to a particular
4600 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4602 * SBCL is closer to bootstrapping under CLISP, thanks to various
4603 fixes by Christophe Rhodes.
4604 * The fasl file format has changed again, to allow the compiler's
4605 INFO database to support symbol macros.
4606 * The user manual (in doc/) is formatted into HTML more nicely.
4607 (thanks to coreythomas)
4608 * The system is smarter about SUBTYPEP relationships, especially
4609 those involving NOT types (including types such as ATOM which are
4610 represented internally using NOT types). Thus SUBTYPEP is less
4611 likely to return (VALUES NIL NIL) in general, and in particular
4612 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4614 * The fasl file format has changed again, because the internal
4615 representation of types now includes a new slot to support the new
4616 SUBTYPEP-of-NOT-types logic.
4617 * (not a change in the main branch of SBCL, but a related prototype
4618 which can hopefully be merged into the main branch of SBCL in the
4619 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4620 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4621 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4622 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4623 dispatch macro character combinations. (thanks to Alexey Dejneka)
4624 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4625 that superficially look like logical namestrings correctly.
4626 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4628 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4629 default supplied-p) for &optional and &key arguments. (thanks to
4632 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4633 * incompatible change: The compiler is now less aggressive about
4634 tail call optimization, doing it only when (> SPACE DEBUG) or
4635 (> SPEED DEBUG). (This is an incompatible change because there are
4636 programs which relied on the old CMU-CL-style behavior to optimize
4637 away their unbounded recursion which will now die of stack overflow.)
4638 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4639 for non-GENCGC systems has been increased to 20M (since that
4640 seems much closer to the likely performance optimum for modern
4641 systems than the old 4M value was)
4642 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4643 and *DEBUG-PRINT-LEVEL*
4644 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4645 of CMU CL's support for SPARC, and various endianness and other
4646 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4647 * new syntactic sugar for the Unix command line: --load foo.bar is now
4648 an alternate notation for --eval '(load "foo.bar")'.
4650 ** The system now detects stack overflow and handles it gracefully,
4651 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4652 optimization settings. (This is a good thing in general, and
4653 its introduction in this version should be particularly timely
4654 for anyone whose code fails because of suppression of tail
4656 ** The system now hunts for the C variable "environ" in a more
4657 devious way, to avoid segfaults when the C library version differs
4658 between compile time and run time. (thanks to Christophe Rhodes)
4659 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4660 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4661 ** The compiler no longer issues bogus style warnings for undefined
4662 classes in the same source file as the DEFCLASSes which defined
4663 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4665 ** fixes in CONDITION class precedence list for undefined function
4666 errors (thanks to Alexei Dejneka)
4667 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4668 correctly. (thanks to Dan Barlow)
4669 ** portability fixes aiming at bootstrapping under CLISP (thanks
4670 to Dave McDonald and Christophe Rhodes)
4671 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4672 ** fixes in type translation and and type inference (thanks to
4674 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4675 ** various fixes in the new ports (thanks to Dan Barlow)
4676 * several changes related to debugging:
4677 ** suppression of tail recursion, as noted above
4678 ** stack overflow detection, as noted above
4679 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4680 is now the default. (For some time encapsulation has been more
4681 reliable than the breakpoint-based :ENCAPSULATE NIL
4682 implementation, at least on X86 systems; and I just noticed that
4683 encapsulation also seems closer to the spirit of the ANSI
4686 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4688 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4689 up properly again. (There was a packaging bug in 0.7.0 which
4690 left their definitions in SB-SYS::LOAD-FOREIGN and
4691 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4692 vital for most things which interface to C-level interfaces,
4693 like extensions working with sockets or databases or
4694 Perl-compatible regexes or whatever, and the need to fix
4695 this bug is the main reason that 0.7.1 was released so
4697 ** DEFGENERIC is now choosier about the methods it redefines, so that
4698 reLOADing a previously-LOADed file containing DEFGENERICs does
4699 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4700 cycle now works as it should. (thanks to Alexey Dejneka)
4701 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4702 fixed by Christophe Rhodes. (He actually submitted this patch
4703 months ago, and I delayed until after 0.7.0.)
4704 ** Bug 111 (internal compiler confusion about runtime checks on
4705 FUNCTION types) was fixed by Alexey Dejneka.
4706 * Some internal cleanups (getting rid of variables which aren't
4707 needed now that the byte interpreter is gone) caused the fasl
4708 file format number to change again.
4710 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4711 * major incompatible change: The default fasl file extension, i.e. the
4712 default extension for files produced by COMPILE-FILE, has changed
4713 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4715 ** There are many changes in the implementation of the compiler.
4716 SBCL is now essentially a compiler-only implementation of ANSI
4717 Common Lisp. EVAL still "interprets" a few special cases, but
4718 almost all the interesting cases are handled by creating
4719 a LAMBDA expression, calling COMPILE on it, then calling
4720 FUNCALL on the result.
4721 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4722 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4723 Since the code is newer, there might still be some new bugs
4724 (though not as many as before Martin Atzmueller's fixes:-). But
4725 the new code is substantially simpler and clearer, and hopefully
4726 any remaining bugs will be simpler, less fundamental, and more
4727 fixable then the bugs in the old code.
4728 ** The revised compiler is still a little unsteady on its feet.
4730 *** The debugging information it produces (particularly the names
4731 of FUNCTION objects) is sometimes much less useful than what
4732 the old compiler produced.
4733 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4734 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4735 within a MACROLET) has been temporarily weakened.
4736 ** There are new compiler optimizations for various functions:
4737 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4738 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4739 *** the math functions TRUNCATE, FLOOR, and CEILING
4740 *** the function-of-all-trades COERCE
4741 Mostly these should be transparent, but there's one
4742 potentially-annoying problem (bug 117): when the compiler
4743 inline-expands a function and does type analysis on the result,
4744 it can create control paths which have type mismatches, and
4745 when it can't prove that those control paths aren't taken,
4746 it will issue WARNINGs about the type mismatches. This is
4747 a particular problem in practice for the new sequence functions.
4748 It's not clear how this should be fixed, and for now, a
4749 workaround is given in the entry for 117 in the BUGS file.
4750 ** (Because of the interaction between the two previous items --
4751 occasional inlining problems and new inline expansions -- some
4752 of the new sequence function optimizations won't really kick in
4753 completely until debugging information, and then inlining, are
4754 straightened out in some future version.)
4755 * minor incompatible changes:
4756 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4757 DIRECTORY no longer implicitly promotes NIL slots of its
4758 pathname argument to :WILD. In particular, when you ask for the
4759 contents of a directory (which you used to be able to do without
4760 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4761 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4762 ** changes in behavior that ANSI explicitly defines to be
4763 implementation dependent:
4764 *** The new compiler-only implementation still conforms with ANSI,
4765 but acts a little different than before. Besides the obvious
4766 changes in performance tradeoffs (that the cost per form passed
4767 to EVAL has gone up, and the cost per form executed by EVAL
4768 has gone down), the behavior of the system changes a little
4769 because there are no longer any interpreted function objects.
4770 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4771 e.g. doing COMPILE on the output of interactive DEFUN is
4773 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4775 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4776 has changed from (:CL) to NIL.
4777 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4778 e.g. #\Newline and #\Tab, don't have names specified in the
4779 ANSI Common Lisp standard, is now based on their ASCII symbolic
4780 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4781 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4782 are no longer used for output.
4783 ** changes in internal implementation constants:
4784 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4785 4 million. (If your application spends a lot of time GCing and
4786 you have a lot of RAM, you might want to experiment with
4787 increasing it even more.)
4788 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4789 However, almost all old code should still continue to work without
4790 immediate update, as SB-C-CALL is now a (deprecated) nickname
4792 ** Old operator names in the style DEF-FOO are now deprecated in
4793 favor of new corresponding names DEFINE-FOO, for consistency with
4794 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4795 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4796 internal symbols, but a few supported extensions like
4797 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4798 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4799 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4800 etc. as you get deeper into recursive calls to the debugger
4801 command loop, instead of the old "5]", "5]]", "5]]]"
4802 sequence. (I was motivated to do this when squabbles between
4803 ILISP and SBCL left me very deeply nested in the debugger. In the
4804 short term, this change will probably provoke more ILISP/SBCL
4805 squabbles, but hopefully it will be an improvement in the long run.)
4806 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4807 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4808 function, since declaiming return types involving aliens is
4809 (1) annoyingly messy to do by hand and (2) vital to efficient
4810 compilation of code which calls such functions.
4811 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4812 longer reexported by the SB-EXT package. They're solely useful
4813 for alien code, so it seems more logical that you should get
4814 them from the SB-ALIEN package, not in SB-EXT.
4815 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4816 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4817 features. Instead, the code that they used to control is always
4818 built into the system.
4819 * many other bug fixes
4820 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4821 advantage of the new EVAL-WHEN stuff and to clean them up in
4822 general, and they are now more ANSI-compliant in a number of
4823 ways. Martin Atzmueller is responsible for a lot of this.
4824 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4826 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4827 *** correct ERROR type for various file operations
4828 *** some fixes for Lisp streams
4829 *** DEFMETHOD syntax checking
4830 *** changing old weird representation of debug information as
4831 strings (which, among their other deficiencies, don't transform
4832 correctly when you rename packages, and don't change their
4833 print representation when you change things like *PACKAGE*
4834 and *PRINT-LENGTH*) to symbols and lists of symbols
4835 He also made several improvements and fixed several bugs in DESCRIBE.
4836 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4838 *** misbehavior of WRITE-STRING/WRITE-LINE
4839 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4840 and several other LOOP problems as well
4841 *** DIRECTORY when similar filenames are present
4842 *** DEFGENERIC with :METHOD options
4843 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4844 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4845 *** argument ordering in FIND with :TEST option
4846 *** mishandled package designator argument in APROPOS-LIST
4847 *** various problems in the backquote readmacro
4848 *** a bug in APROPOS
4849 *** probably some others that I'm not describing very well here,
4850 since the CVS log documents them by reference to sbcl-devel
4851 messages, and the SourceForge archives aren't working well.:-(
4852 ** Dan Barlow improved the Alpha port (and is making progress on the
4853 PPC port, for those of you who think different).
4854 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4855 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4856 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4857 continues to work on the SPARC port (for those of you in a position
4858 to look down upon our little PC-compatible boxes from a great height).
4859 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4860 and uses that copy, rather than the current dynamic value, when
4861 it's trying to decide whether to truncate output. Thus e.g.
4862 (let ((*print-lines* 50))
4863 (pprint-logical-block (stream nil)
4865 (let ((*print-lines* 8))
4866 (print (aref possiblybigthings i) stream)))))
4867 should now truncate the logical block only at 50 lines, instead of
4868 often truncating it at 8 lines, as it did before.
4869 * The doc/cmucl/ directory, containing old CMU CL documentation
4870 from the time of the fork, is no longer part of the base system.
4871 SourceForge has shut down its anonymous FTP service, and with it
4872 my original plan for distributing the old CMU CL documentation
4873 there. For now, if you need these files you can download an old
4874 SBCL source release and extract them from it.
4875 * The fasl file version number changed again, for dozens of reasons,
4876 some of which are apparent above.
4878 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4879 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4880 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4881 patch, so that DISASSEMBLE output is much nicer.
4882 * The code in the SB-PROFILE package now seems reasonably stable.
4883 I still haven't decided what the final interface should look like
4884 (I'd like PROFILE to interact cleanly with TRACE, since both
4885 facilities use function encapsulation) but if you have a need
4886 for profiling now, you can probably use it successfully with
4887 the current CMU-CL-style interface.
4888 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4889 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4890 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4891 link now returns the dangling link itself, and for similar
4892 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4893 link itself. (In these cases the old code signalled an error and
4894 looped endlessly, respectively.) Thus, DIRECTORY now works even
4895 in the presence of dangling and cyclic symbolic links.
4896 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4897 is now a supported extension again, since the consensus on
4898 sbcl-devel was that it can be useful for ordinary development
4899 work, not just for debugging SBCL itself.
4900 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4901 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4902 that currently-defined functions might be redefined later with
4903 different return types.
4904 * Hash tables can be printed readably, as inspired by CMU CL code
4905 of Eric Marsden and SBCL code of Martin Atzmueller.
4906 * better error handling in CLOS method combination, thanks to
4907 Martin Atzmueller porting Pierre Mai's CMU CL patches
4908 * more overflow fixes for >16Mbyte I/O buffers
4909 * A bug in READ has been fixed, so that now a single Ctrl-D
4910 character suffices to cause end-of-file on character streams.
4911 In particular, now you only need one Ctrl-D at the command
4912 line (not two) to exit SBCL.
4913 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4915 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4916 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4917 does the right thing.
4918 * The implementation of some type tests, especially for CONDITION
4919 types, is now tidier and maybe faster, due to CMU CL code
4920 originally by Douglas Crosher, ported by Martin Atzmueller.
4921 * Some math functions have been fixed, and there are new
4922 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4923 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4924 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4925 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4926 likely to be built into sbcl-0.7.0.)
4927 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4928 CL, ported to SBCL by Martin Atzmueller)
4929 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4930 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4931 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4932 * There's a new slam.sh hack to shorten the edit/compile/debug
4933 cycle for low-level changes to SBCL itself, and a new
4934 :SB-AFTER-XC-CORE target feature to control the generation of
4935 the after-xc.core file needed by slam.sh.
4936 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4937 COMPILE-FILE is no longer supported, so that now every function
4938 gets an entry point, so that block compilation looks a little
4939 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4940 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4941 returns the number of bytes consed since the system started,
4942 rather than the number consed since the first time the function
4943 was called. (The new definition parallels ANSI functions like
4944 CL:GET-INTERNAL-RUN-TIME.)
4945 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4946 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4947 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4948 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4949 * Fasl file version numbers are now independent of the target CPU,
4950 since historically most system changes which required version
4951 number changes have affected all CPUs equally. Similarly,
4952 the byte fasl file version is now equal to the ordinary
4955 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4956 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4957 is no longer recognized. I apologize for this, because it was
4958 listed in SB-EXT as a supported extension, but I found that
4959 its existing behavior was poorly specified, as well as incorrectly
4960 specified, and it looked like too much of a mess to straighten it
4961 out. I have enough on my hands trying to get ANSI stuff to work..
4962 * many patches ported from CMU CL by Martin Atzmueller, with
4963 half a dozen bug fixes in pretty-printing and the debugger, and
4964 half a dozen others elsewhere
4965 * fixed bug 13: Floating point infinities are now supported again.
4966 They might still be a little bit flaky, but thanks to bug reports
4967 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4968 as flaky as they were.
4969 * The --noprogrammer command line option is now supported. (Its
4970 behavior is slightly different in detail from what the old man
4971 page claimed it would do, but it's still appropriate under the
4972 same circumstances that the man page talks about.)
4973 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4974 are now supported, and enabled by default. Thus, the compiler can
4975 handle many floating point and complex operations much less
4976 inefficiently. (Thus e.g. you can implement a complex FFT
4978 * The compiler now detects type mismatches between DECLAIM FTYPE
4979 and DEFUN better, and implements CHECK-TYPE more correctly, and
4980 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4981 thanks to patches from Martin Atzmueller.
4982 * various fixes to make the cross-compiler more portable to
4983 ANSI-conforming-but-different cross-compilation hosts (notably
4984 Lispworks for Windows, following bug reports from Arthur Lemmens)
4985 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4986 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4987 fixed thanks to Pierre Mai's CMU CL patches.
4988 * fixes to keep the system from overflowing internal counters when
4989 it tries to use i/o buffers larger than 16M bytes
4990 * fixed bug 45a: Various internal functions required to support
4991 complex special functions have been merged from CMU CL sources.
4992 (When I was first setting up SBCL, I misunderstood a compile-time
4993 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4994 * improved support for type intersection and union, fixing bug 12
4995 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4996 more obscure bugs as well
4997 * some steps toward byte-compiling non-performance-critical
4998 parts of the system, courtesy of patches from Martin Atzmueller
4999 * Christophe Rhodes has made some debian packages of sbcl at
5000 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5001 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5002 stable, but are nonetheless usable. When he's ready, I'd be happy
5003 to add them to the SourceForge "File Releases" section. (And if
5004 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5005 * new fasl file format version number (because of changes in
5006 internal representation of (OR ..) types to accommodate the new
5007 support for (AND ..) types, among other things)
5009 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5010 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5012 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5014 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5015 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5016 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5017 * DESCRIBE now works on structure objects again.
5018 * Most function call argument type mismatches are now handled as
5019 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5020 know whether the function will be redefined before the call is
5021 executed. (The compiler could flag local calls with full WARNINGs,
5022 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5023 it doesn't keep track of enough information to know whether calls
5024 are local in this sense.)
5025 * Compiler output is now more verbose, with messages truncated
5026 later than before. (There should be some supported way for users
5027 to override the default verbosity, but I haven't decided how to
5028 provide it yet, so this behavior is still controlled by the internal
5029 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5030 src/compiler/ir1util.lisp.)
5031 * Fasl file format version numbers have increased again, because
5032 support for the Gray streams extension changes the layout of the
5033 system's STREAM objects.
5034 * The Gray subclassable streams extension now works, thanks to a
5035 patch from Martin Atzmueller.
5036 * The full LOAD-FOREIGN extension (not just the primitive
5037 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5038 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5039 but like most other programs, it defaults to copying the Unix
5040 environment from the original process instead of starting the
5041 new process in an empty environment.
5042 * Extensions which manipulate the Unix environment now support
5043 an :ENVIRONMENT keyword option which doesn't smash case or
5044 do other bad things. The CMU-CL-style :ENV option is retained
5045 for porting convenience.
5046 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5047 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5049 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5051 * A patch from Martin Atzmueller seems to have solved the SIGINT
5052 problem, and as far as we know, signal-handling now works cleanly.
5053 (If you find any new bugs, please report them!)
5054 * The system no longer defaults Lisp source file names to types
5055 ".l", ".cl", or ".lsp", but only to ".lisp".
5056 * The compiler no longer uses special default file extensions for
5057 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5058 seems to expect a single default extension for all compiled code,
5059 and there's no compelling reason to try to stretch the standard
5060 to allow two different extensions.) Instead, byte-compiled files
5061 default to the same extension as native-compiled files.
5062 * Fasl file format version numbers have increased again, because
5063 a rearrangement of internal implementation packages made some
5064 dumped symbols in old fasl files unreadable in new cores.
5065 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5066 many fewer weird special cases.
5067 * Bug #17 (differing COMPILE-FILE behavior between logical and
5068 physical pathnames) has been fixed, and some related misbehavior too,
5069 thanks to a patch from Martin Atzmueller.
5070 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5071 by Tim Moore, ported to SBCL by Martin Atzmueller.
5072 * Martin Atzmueller fixed several filesystem-related problems,
5073 including bug #36, in part by porting CMU CL patches, which were
5074 written in part by Paul Werkowski.
5075 * More compiler warnings in src/runtime/ are gone, thanks to
5076 more patches from Martin Atzmueller.
5077 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5080 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5082 * DESCRIBE now works on CONDITION objects.
5083 * The debugger now handles errors which arise when trying to print
5084 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5086 * The build system now uses an additional file, customize-target-features.lisp,
5087 to allow local modifications to the target *FEATURES* list. (The point of
5088 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5089 debugging features enabled, without having to worry about propagating it
5090 into everyone's system when I do a "cvs update".) When no
5091 customize-target-features.lisp file exists, the target *FEATURES* list
5092 should be constructed the same way as before.
5093 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5094 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5095 warn about behavior which is undefined under the ANSI spec. Note: This
5096 is specified by ANSI, but it's not very popular with programmers.
5097 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5098 macro in the SBCL sources for an example of a workaround which you
5099 might use to make portable ANSI-standard code which does what you want.
5100 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5101 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5102 when it's used as a non-toplevel form. (This is required in order
5103 to implement the DEFCONSTANT-EQX macro.)
5104 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5105 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5106 funny things, due to bugs in the implementation of EVAL-WHEN
5107 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5108 non-toplevel DEFCONSTANTs are uncommon.)
5109 * The core file version number and fasl file version number have been
5110 incremented, because the old noncompliant DEFCONSTANT behavior involved
5111 calling functions which no longer exist, and because I also took the
5112 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5113 * fixed bug 1 (error handling before read-eval-print loop starts), and
5114 redid debugger restarts and related debugger commands somewhat while
5116 ** The QUIT debugger command is gone, since it did something
5117 rather different than the SB-EXT:QUIT command, and since it never
5118 worked properly outside the main toplevel read/eval/print loop.
5119 Invoking the new TOPLEVEL restart provides the same functionality.
5120 ** The GO debugger command is also gone, since you can just invoke
5121 the CONTINUE restart directly instead.
5122 ** The TOP debugger command is also gone, since it's redundant with the
5123 FRAME 0 command, and since it interfered with abbreviations for the
5125 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5127 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5128 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5129 some porting work by Martin Atzmueller)
5130 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5131 with a boatload of patches which he ported to SBCL. Now that those
5133 ** The system tries to make sure that its low-priority messages
5134 are prefixed by semicolons, to help people who like to use
5135 syntax highlighting in their ILISP buffer. (This patch
5136 was originally due to Raymond Toy.)
5137 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5138 patches originally written by Raymond Toy.
5139 ** The compiler understands coercion between single-value and
5140 multiple-VALUES type expressions better, getting rid of some very
5141 weird behavior, thanks to patches originally by Robert MacLachlan
5142 and Douglas Crosher.
5143 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5144 lambda lists, thanks to a patch originally by Pierre Mai.
5145 ** The system no longer bogusly warns about "abbreviated type
5147 ** The compiler gets less confused by inlining and RETURN-FROM,
5148 thanks to some patches originally by Tim Moore.
5149 ** The system no longer hangs when dumping circular lists to fasl
5150 files, thanks to a patch originally from Douglas Crosher.
5151 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5152 undefined function error.
5153 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5154 in structure slot initforms) for now, documented workaround instead:-|
5155 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5156 * fixed bug 5: added stubs for various Gray stream functions called
5157 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5158 installed, at least appropriate type errors are generated
5159 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5160 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5161 consistently in DEFMETHOD forms.
5162 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5163 it doesn't seem to affect SBCL after all
5164 * The C runtime system now builds with better optimization and many
5165 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5167 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5169 * The system is now under CVS at SourceForge (instead of the
5170 CVS repository on my home machine).
5171 * The new signal handling code has been tweaked to treat register
5172 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5173 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5174 downstream, e.g. in debug-int.lisp, has implicit dependencies
5175 on the unsignedness of integer representation of machine words,
5176 and that caused the system to bomb out with infinite regress
5177 when trying to recover from type errors involving signed values,
5178 e.g. (BUTLAST '(1 2 3) -1).)
5179 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5180 (This was one of the bugs Peter Van Eynde reported back in July.)
5181 * The system now uses code inspired by Colin Walters' O(N)
5182 implementation of MAP (from the cmucl-imp@cons.org mailing
5183 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5184 inline the MAP operation, and there is more than one
5185 sequence argument to the MAP call (so that it can't just
5186 do ETYPECASE once and for all based on the type of the
5187 single sequence argument). (The old non-inline implementation
5188 of the general M-argument sequence-of-length-N case required
5189 O(M*N*N) time when any of the sequence arguments were LISTs.)
5190 * The QUIT :UNIX-CODE keyword argument has been renamed to
5191 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5192 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5194 * Raymond Wiker's patches to port dynamic loading from Linux to
5195 FreeBSD have been added.
5196 * The BUGS file is now more nearly up to date, thanks in large part
5197 to Martin Atzmueller's review of it.
5198 * The debugger now flushes standard output streams before it begins
5199 its output ("debugger invoked" and so forth).
5200 * The core version number and fasl file version number have both
5201 been incremented, because of incompatible changes in the layout
5203 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5204 used to not be called for a saved Lisp image.)
5205 * Martin Atzmueller's version of a patch to fix a compiler crash,
5206 as posted on sbcl-devel 13 September 2000, has been installed.
5207 * Instead of installing Martin Atzmueller's patch for the
5208 compiler transform for SUBSEQ, I deleted the compiler transform,
5209 and transforms for some similar consing operations.
5210 * A bug in signal handling which kept TRACE from working on OpenBSD
5212 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5213 away by constant folding
5214 * The system now defines its address space constants in one place
5215 (in the Lisp sources), and propagates them automatically elsewhere
5216 (through GENESIS and the sbcl.h file). Therefore, patching the
5217 address map is less unnecessarily tedious and error-prone. The
5218 Lisp names of address space constants have also been systematized.
5219 * CVS tags like dollar-Header-dollar have been removed from
5220 the sources, because they have never saved me trouble and
5221 they've been source of trouble working with patches and other
5222 diff-related operations.
5223 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5224 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5226 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5228 * The system has been ported to OpenBSD.
5229 * The system now compiles with a simple "sh make.sh" on the systems
5230 that it's supported on. I.e., now you no longer need to tweak
5231 text in the target-features.lisp-expr and symlinks in src/runtime/
5232 by hand, the make.sh takes care of it for you.
5233 * The system is no longer so grossly inefficient when compiling code
5234 involving vectors implemented as general (not simple) vectors (VECTOR T),
5235 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5236 which dares to use the various sequence functions on non-simple
5237 vectors, takes less of a performance hit.
5238 * There is now a primitive type predicate VECTOR-T-P
5239 to test for the (VECTOR T) type, so that e.g.
5240 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5241 can now be compiled with some semblance of efficiency. (The old code
5242 turned the type declaration into a full call to %TYPEP at runtime!)
5243 * AREF on (VECTOR T) is still not fast, since it's still compiled
5244 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5245 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5246 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5247 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5248 without making full calls to SUBTYPEP at runtime.
5249 (Some analogous efficiency issues for non-simple vectors specialized to
5250 element types other than T, or for non-simple multidimensional arrays,
5251 have not been addressed. They could almost certainly be handled the
5252 same way if anyone is motivated to do so.)
5253 * The changes in array handling break binary compatibility, so
5254 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5255 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5256 instead of (VALUES T T).
5257 * By following the instructions that Dan Barlow posted to sbcl-devel
5258 on 2 July 2000, I was able to enable primitive dynamic object
5259 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5260 functionality is not implemented (since it calls ld to resolve
5261 library references automatically, requiring RUN-PROGRAM for its
5262 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5263 try to resolve library references) is now supported.
5264 * The system now flushes the standard output streams when it terminates,
5265 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5266 them at several other probably-convenient times, e.g. in each pass of
5267 the toplevel read-eval-print loop, and after evaluating a form given
5268 as an "--eval" command-line option. (These changes were motivated by a
5269 discussion of stream flushing issues on cmucl-imp in August 2000.)
5270 * The source transform for TYPEP of array types no longer assumes
5271 that an array whose element type is a not-yet-defined type
5272 is implemented as an array of T, but instead punts, so that the
5273 type will be interpreted at runtime.
5274 * There is now some support for cross-compiling in make.sh: each of
5275 the phases of make.sh has its own script. (This should be transparent
5276 to people doing ordinary, non-cross-compile builds.)
5277 * Since my laptop doesn't have hundreds of megabytes of memory like
5278 my desktop machine, I became more motivated to do some items on
5279 my to-do list in order to reduce the size of the system a little:
5280 ** Arrange for various needed-only-at-cold-init things to be
5281 uninterned after cold init. To support this, those things have
5282 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5283 symbols with such names are now uninterned after cold init).
5284 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5285 fasl files for cold load.
5286 ** Remove the old compiler structure pooling code (which used to
5287 be conditional on the target feature :SB-ALLOC) completely.
5288 ** Redo the representation of some data in cold init to be more compact.
5289 (I also looked into supporting byte compiled code at bootstrap time,
5290 which would probably reduce the size of the system a lot, but that
5291 looked too complicated, so I punted for now.)
5292 * The maximum signal nesting depth in the src/runtime/ support code has
5293 been reduced from 4096 to 256. (I don't know any reason for the very
5294 large old value. If the new smaller value turns out to break something,
5295 I'll probably just bump it back up.)
5296 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5298 * Many, many bugs reported by Peter Van Eynde have been added to
5299 the BUGS list; some have even been fixed.
5300 * While enabling dynamic object file loading, I tried to make the
5301 code easier to understand, renaming various functions and variables
5302 with less ambiguous names, and changing some function calling
5303 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5304 * While trying to figure out how to do the OpenBSD port, I tried to
5305 clean up some of the code in src/runtime/. In particular, I dropped
5306 support for non-POSIX signal handling, added various comments,
5307 tweaked the code to reduce the number of compilation warnings, and
5308 renamed some files to increase consistency.
5309 * To support the new automatic configuration functionality in make.sh,
5310 the source file target-features.lisp-expr has been replaced with the
5311 source file base-target-features.lisp-expr and the machine-generated
5312 file local-target-features.lisp-expr.
5313 * fixed a stupid quoting error in make.sh so that using CMU CL
5314 "lisp -batch" as cross-compilation host works again
5316 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5318 * DESCRIBE no longer tries to call itself recursively to describe
5319 bound/fbound values, so that it no longer fails on symbols which are
5320 bound to themselves (like keywords, T, and NIL).
5321 * DESCRIBE now works on generic functions.
5322 * The printer now prints less-screwed-up representations of closures
5323 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5324 * A private symbol is used instead of the :EMPTY keyword previously
5325 used to mark empty slots in hash tables. Thus
5326 (DEFVAR *HT* (MAKE-HASH-TABLE))
5327 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5328 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5329 now does what ANSI says that it should. (You can still get
5330 similar noncompliant behavior if bang on the hash table
5331 implementation with all the symbols you get back from
5332 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5333 This breaks binary compatibility, since tests for equality to
5334 :EMPTY are wired into things like the macroexpansion of
5335 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5337 * There's now a minimal placeholder implementation for CL:STEP,
5338 as required by ANSI.
5339 * An obscure bug in the interaction of the normal compiler, the byte
5340 compiler, inlining, and structure predicates has been patched
5341 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5342 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5344 * Missing ordinary arguments in a macro call are now detected even
5345 when the macro lambda list contains &KEY or &REST.
5346 * The debugger no longer complains about encountering the top of the
5347 stack when you type "FRAME 0" to explicitly instruct it to go to
5348 the top of the stack. And it now prints the frame you request even
5349 if it's the current frame (instead of saying "You are here.").
5350 * As specified by ANSI, the system now always prints keywords
5351 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5353 * The default initial SIZE of HASH-TABLEs is now smaller.
5354 * Type information from CLOS class dispatch is now propagated
5355 into DEFMETHOD bodies, so that e.g.
5356 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5358 is now basically equivalent to
5359 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5360 (DECLARE (TYPE SINGLE-FLOAT X))
5362 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5363 operation, without having to do run-time type dispatch.
5364 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5365 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5366 * Since I don't seem to be making big file reorganizations very often
5367 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5368 is overflowing my ability to conveniently back them up), I've finally
5369 checked the system into CVS. (The CVS repository is on my home system,
5370 not at SourceForge -- putting it on SourceForge might come later.)
5371 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5372 high-level GC-NOTIFY-FOO functions send their output. (There's
5373 still very little control of where low-level verbose GC functions
5374 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5375 less than it used to -- the GC-NOTIFY-FOO functions are now under
5376 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5377 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5378 in only one place in the source code, and propagates it automatically
5379 everywhere that it's needed. Thus e.g. when I bump the version from
5380 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5381 * The C source files now include boilerplate legalese and documentation
5382 at the head of each file (just as the Lisp source files already did).
5383 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5384 to his page will be replaced with a link to his new CLiki service.
5386 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5388 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5389 * The build process now looks for GNU make under the default name "gmake",
5390 instead of "make" as it used to. If GNU make is not available as "gmake"
5391 on your system, you can change this default behavior by setting the
5392 GNUMAKE environment variable.
5393 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5394 can build without error under CMU CL.
5396 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5398 * There is now a partial SBCL user manual (with some new text and some
5399 text cribbed from the CMU CL manual).
5400 * The beginnings of a profiler have been added (starting with the
5401 CMU CL profiler and simplifying and cleaning up). Eventually the
5402 main interface should be through the TRACE macro, but for now,
5403 it's still accessed through vaguely CMU-CL-style functions and macros
5404 exported from the package SB-PROFILE.
5405 * Some problems left over from porting CMU CL to the new
5406 cross-compilation bootstrap process have been cleaned up:
5407 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5408 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5409 part when getting rid of the compiler *BACKEND* stuff.)
5410 ** The value of *NULL-TYPE* was screwed up, because it was
5411 being initialized before the type system knew the final
5412 definition of the 'NULL type. This screwed up several key
5413 optimizations in the compiler, causing inefficiency in all sorts
5414 of places. (I found it because I wanted to understand why
5415 GET-INTERNAL-RUN-TIME was consing.)
5416 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5417 PROCLAIM FTYPE information. Unfortunately this broke binary
5418 compatibility again, since now the forms output by DEFGENERIC
5419 to refer to functions which didn't exist in 0.6.3.
5420 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5421 can use the new (as of 0.6.3) transform for SOME into MAP into
5423 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5424 values to (INTEGER 0 1000000), so that the time code will no longer
5425 occasionally get blown up by Linux returning 1000000 microseconds
5426 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5427 its output conform to the ANSI spec. (Alas, this makes its output
5428 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5429 * A full call to MAP NIL with a single sequence argument no longer conses.
5430 * fixes to problems pointed out by Martin Atzmueller:
5431 * The manual page no longer talks about multiprocessing as though
5432 it were currently supported.
5433 * The ILISP support patches have been removed from the distribution,
5434 because as of version 5.10.1, ILISP now supports SBCL without us
5435 having to maintain patches.
5436 * added a modified version of Raymond Toy's recent CMU CL patch for
5437 EQUALP comparison of HASH-TABLE
5439 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5441 * The system still can't cross-compile itself with
5442 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5443 entails), but at least it can compile more of itself that way
5444 than it used to be able to, and various buglets which were uncovered
5445 by trying to cross-compile itself that way have now been fixed.
5446 * This release breaks binary compatibility again. This time
5447 at least I've incremented the FASL file format version to 2, so that the
5448 problem can be detected reliably instead of just causing weird errors.
5449 * various new style warnings:
5450 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5451 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5452 ** using the lexical binding of a variable named in the *FOO* style
5453 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5454 as specified by ANSI.
5455 * *RANDOM-STATE* is no longer automatically initialized from
5456 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5457 default behavior of the system is to repeat its behavior every time
5458 it's run. If you'd like to change this behavior, you can always
5459 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5460 old convention there was no comparably easy way to get the system to
5461 repeat its behavior every time it was run.
5462 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5463 FTYPE declarations has been removed, in favor of their ANSI
5464 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5465 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5466 the types of their sequence arguments can be determined at compile time.
5467 This is done through a new open code expansion for MAP which eliminates
5468 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5469 argument types can be determined at compile time.
5470 * The optimizer now transforms COERCE into an identity operation when it
5471 can prove that the coerced object is already of the correct type. (This
5472 can be a win for machine generated code, including the output of other
5473 optimization transforms, such as the MAP transform above.)
5474 * Credit information has been moved from source file headers into CREDITS.
5475 * Source file headers have been made more standard.
5476 * The CASE macro now compiles without complaining even when it has
5479 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5481 * (Note that the way that the PCL macroexpansions were rewritten
5482 to accommodate the change in DEFGENERIC below breaks binary
5483 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5484 not run under sbcl-0.6.2. Once we get out of alpha releases,
5485 i.e. hit release 1.0.0, we'll probably try to maintain binary
5486 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5487 and sbcl-1.4.4. Until then, however, it might be fairly common
5488 for maintenance releases to break binary compatibility.)
5489 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5491 * The reporting of unhandled signals has been changed to print some
5492 explanatory text as well as the report form. (Previously only
5493 the report form was printed.)
5494 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5495 it defines, so that the compiler no longer issues undefined function
5496 warnings for compiled-but-not-yet-loaded generic functions.
5497 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5498 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5499 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5500 section of the ANSI spec are supported.
5501 * The "" nickname for the "KEYWORD" package has been removed.
5502 The reader still handles symbol tokens which begin with a package marker
5503 as keywords, but it doesn't expose its mechanism for doing so in the
5504 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5505 * The system now issues STYLE-WARNINGs for contradictory TYPE
5506 proclamations. (Warnings for contradictory FTYPE proclamations would
5507 be nice too, but those can't be done usefully unless the type system
5508 is made smarter about FUNCTION types.)
5509 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5510 systematized, so that "*target-*.lisp is supposed to exist only on the
5511 target and imply that there's a related file which exists on the
5512 host, and *host-*.lisp is supposed to exist only on the host and imply
5513 that there's a related file which exists on the target. This involves a
5514 lot of renaming. Hopefully the acute confusion caused by the renaming
5515 will be justified by the reduction in chronic confusion..
5516 ** runtime-type.lisp -> early-target-type.lisp
5517 ** target-type.lisp -> late-target-type.lisp
5518 ** early-host-format.lisp -> early-format.lisp
5519 ** late-host-format.lisp -> late-format.lisp
5520 ** host-error.lisp -> misc-error.lisp
5521 ** early-error.lisp -> early-target-error.lisp
5522 ** late-error.lisp -> late-target-error.lisp
5523 ** host-defboot.lisp -> early-defboot.lisp
5524 ** code/misc.lisp -> code/target-misc.lisp
5525 ** code/host-misc.lisp -> code/misc.lisp
5526 ** code/numbers.lisp -> code/target-numbers.lisp
5527 ** code/early-numbers.lisp -> numbers.lisp
5528 ** early-host-type.lisp -> early-type.lisp
5529 ** late-host-type.lisp -> late-type.lisp
5530 ** host-typep.lisp -> typep.lisp
5531 ** load.lisp -> target-load.lisp
5532 ** host-load.lisp -> load.lisp
5533 ** host-disassem.lisp -> disassem.lisp
5534 ** host-insts.lisp -> insts.lisp
5535 ** byte-comp.lisp -> target-byte-comp.lisp
5536 ** host-byte-comp.lisp -> byte-comp.lisp
5537 ** host-signal.lisp -> signal.lisp
5538 ** host-defstruct.lisp -> defstruct.lisp
5539 ** late-target-type.lisp -> deftypes-for-target.lisp
5540 Furthermore, several other previously target-only files foo.lisp (e.g.
5541 hash-table.lisp and random.lisp) have been split into a target-and-host
5542 foo.lisp file and a target-only target-foo.lisp file, with their key type
5543 definitions in the target-and-host part, so that the cross-compiler will
5544 know more about target types.
5545 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5546 gone away. In their place are various *BACKEND-FOO* variables
5547 corresponding to the slots of the old structure.
5548 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5549 into the target SBCL has been fixed.
5550 * The chill.lisp system for loading cold code into a running SBCL
5552 * Support for the CMU CL "scavenger hook" extension has been removed.
5553 (It was undocumented and unused in the CMU CL sources that SBCL was
5554 derived from, and stale in sbcl-0.6.1.)
5555 * Various errors in the cross-compiler type system were detected
5556 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5557 (enabling various consistency checks). Many of them were fixed,
5558 but some hard problems remain, so the compiler is back to
5559 running without *TYPE-SYSTEM-INITIALIZED* for now.
5560 * As part of the cross-compiler type system cleanup, I implemented
5561 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5562 * I have started adding UNCROSS calls throughout the type system
5563 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5564 on cross-compiler input files will be able to go away, and various
5566 * CONSTANTP now returns true for quoted forms (as explicitly required
5569 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5571 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5572 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5573 (MAKE-LIST -1). In the longer term, it ought to become true
5574 that declarations are assertions even at SAFETY 1. For now, it's not
5575 quite true even at SAFETY 3, but it's at least more nearly true..
5576 (Note that this change seems to increases the size of the system by
5577 O(5%) and to decrease the speed of the compiler by 20% or more.)
5578 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5579 for the problem of printing dozens of lines of distracting information
5580 about low-level system machinery as part of the top stack frame
5581 on entry to the debugger when an undefined function was called.
5582 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5583 is not reset to COMMON-LISP-USER.
5584 * Compilation of stuff related to dyncount.lisp has been made conditional
5585 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5586 smaller. The various dyncount-related symbols have been moved into
5587 a new "SB-DYNCOUNT" package.
5588 * tty-inspect.lisp has been renamed to inspect.lisp.
5589 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5590 feature has gone away. (When we eventually port to other flavors of
5591 libc and/or Unix, we'll try to make the differences between flavors
5592 invisible at the user level.)
5593 * Various other *FEATURES* tags, and/or their associated conditionals,
5594 have been removed if obsolescent, or given better documentation, or
5595 sometimes given more-mnemonic names.
5597 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5599 * tidied up "make.sh" script
5600 * tidied up system directory structure
5601 * better "clean.sh" behavior
5602 * added doc/FOR-CMUCL-DEVELOPERS
5603 * many many small tweaks to output format, e.g. removing possibly-confusing
5604 trailing #\. character in DESCRIBE-INSTANCE
5605 * (EQUALP #\A 'A) no longer signals an error.
5606 * new hashing code, including EQUALP hashing
5607 * tidied up Lisp initialization and toplevel
5608 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5609 * command line argument processing
5610 * added POSIX-GETENV function to deal with Unix-ish environment variables
5611 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5612 terminating SBCL on EOF
5613 * non-verbose GC by default
5614 * There is no more "sbcl" shell script; the sbcl file is now the C
5615 runtime executable (just like CMU CL).
5616 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5618 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5619 symbol and package information as Lisp native symbol and package objects
5620 instead of strings naming symbols and strings naming packages. This way,
5621 whenever packages are renamed (as in warm init), debug information is
5622 transformed along with everything else.
5623 * tweaked the optimization policy declarations which control the building
5624 of SBCL itself. Now, among other things, the system no longer saves
5625 source location debugging information. (This helps two problems at once
5626 by reducing SBCL size and by keeping SBCL from trying to look for its
5627 sources -- which may not exist -- when reporting errors.)
5628 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5629 debugging and testing purposes
5630 * cleaned up printing, making the printer call PRINT-OBJECT for
5631 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5632 methods, giving nearly-ANSI behavior
5633 * converted almost all special variables to use *FOO* naming convention
5634 * deleted PARSE-TIME functionality, since it can be done portably
5635 * moved some files out of cold init into warm init
5636 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5638 * regularized formatting of source files
5639 * added an install.sh script
5640 * fixed ridiculous memory usage of cross-compiler by making
5641 compiler/alloc.lisp not try to do pooling unless it can hook
5642 itself into the GC of the cross-compilation host. Now the system
5643 builds nicely on my old laptop.
5644 * added :SB-ALLOC in target-features.lisp-expr
5645 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5646 was not implemented)
5647 * re-did condition handling and note reporting in the compiler. Notes
5648 are no longer handled by signalling conditions. Style warnings
5649 and warnings are handled more correctly and reported in such a way
5650 that it's easy to find one or the other in your output (so that you
5651 can e.g. figure out which of many problems caused COMPILE-FILE to
5653 * changed the severity of several compiler warnings from full WARNING
5654 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5655 compiler note reporting so that it doesn't use the condition system
5656 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5657 COMPILE-FILE command)
5658 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5659 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5660 no longer supported, since their implementation was deeply intertwingled
5661 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5662 * removed bogus "support" for compiler macros named (SETF FOO), and
5663 removed the compiler macro for SETF INFO (but only after making a fool
5664 of myself on the cmucl-imp mailing list by posting a bogus patch for
5665 DEFINE-COMPILER-MACRO..)
5666 * Compiled files containing forms which have side effects on the Lisp
5667 reader (such as DEFPACKAGE forms) are now handled more correctly.
5668 (Compiler queuing of top level lambdas has been suppressed by setting
5669 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5670 * deleted various currently-unused source files, e.g. gengc.lisp. They
5671 may be added back at some point e.g. when porting to other architectures,
5672 but until they are it's distracting to distribute them and to try to
5674 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5675 there were so many of them they're just distractions, and UNCROSS is
5676 known to be able to handle the current sources
5677 * moved PROFILE functionality into TRACE, so that it will be clear
5678 how the wrapping and unwrapping of functions when you profile them
5679 interacts with the wrapping and unwrapping of functions when you
5680 trace them. (Actually, the functionality isn't there yet, but at least
5681 the interface specification is there. Hopefully, the functionality will
5682 arrive with some future maintenance release.)
5683 * removed host-oops.lisp
5684 * changed signature of QUIT function to allow UNIX-CODE argument
5685 * fixed READ-SEQUENCE bug
5686 * tweaked verbose GC output so that it looks more like the progress
5687 output that ANSI specifies for functions like LOAD
5688 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5689 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob