1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.36:
3 * INCOMPATIBLE CHANGE: the SB-QUEUE contrib was merged into the
4 SB-CONCURRENCY contrib module.
5 * new contrib: SB-CONCURRENCY is a new contrib; it's supposed to contain
6 additional data structures and tools for concurrent programming; at the
7 moment it contains a lock-free queue, and a lock-free mailbox
9 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
10 SB-THREAD:WAIT-ON-SEMAPHORE.
11 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
13 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
14 conditions to defer the deadline for forever.
15 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
17 * enhancement: errors from NO-APPLICABLE-METHOD and
18 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
19 generic function call.
20 * enhancement: SB-BSD-SOCKET improvements
21 ** sockets and socket streams now have a more informative printed
22 representation based on the corresponding SOCKET-NAME and
24 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
26 * improvements to the instrumenting profiler
27 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
28 ** optimization: counters no longer use locks for the overflow mode.
29 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
30 incurred an off-by-one miscount.
31 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
32 * bug fix: a rare case of startup-time page table corruption.
33 * bug fix: a semaphore with multiple waiters and some of them unwinding due
34 to timeouts could be left in an inconsistent state.
35 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
36 * bug fix: misoptimization of multiplication by one in
37 (SB-C::FLOAT-ACCURACY 0) policies.
38 * bug fix: miscounts in SB-PROFILE.
40 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
41 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
42 stack frame thrown from.
43 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
44 compiler optimization qualities inside dynamic extent of its body.
45 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
46 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
48 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
49 constraint propgation, allowing better compilation eg. when used to
50 access structures with WITH-SLOTS. (lp#520366)
51 * optimization: the compiler is now more aware of the type of the underlying
52 storage vector for multidimensional simple arrays resulting in better code
53 for accessing such arrays.
54 * optimization: passing NIL as the environment argument to TYPEP no longer
55 inhibits optimizing it. (lp#309788)
56 * optimization: more efficient register usage when handling single-float
57 arguments on x86-64. (thanks to Lutz Euler)
58 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
59 pre-allocated temporary vectors. (lp#496249)
60 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
61 in :INITIAL-CONTENTS. (lp#523612)
62 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
63 functions. (lp#524707)
64 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
65 WITH-SLOTS usages during compilation.
66 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
67 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
68 all x86oid platforms with :UD2-BREAKPOINTS target feature.
69 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
70 instruction (tested on x86oid linux with ud2-breakpoints).
71 * bug fix: slam.sh now works on win32.
72 * bug fix: better differences of numeric types. (lp#309124)
73 * bug fix: arrays declared intersection and union types can have their
74 upgraded element type derived. (lp#316078)
75 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
76 threads started during profiling. (lp#472499)
77 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
79 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
80 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
81 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
82 values instead of signaling an error. (lp#309093)
83 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
85 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
86 declarations (lp#497321)
87 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
88 and failed to detect circular lists (lp#452008)
89 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
91 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
92 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
93 due to it, so that handlers can run.
94 * bug fix: reparsing undefined types if they have become defined since
96 * bug fix: missing &REST type in a proclamation for a function with both
97 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
98 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
99 expanded calls (lp#542174)
100 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
101 than just at toplevel form.
103 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
104 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
105 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
106 but work on type specifiers.
107 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
108 to name a type specifier.
109 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
110 specifier is valid where "valid" basically means "would be accepted as
111 second argument of TYPEP".
112 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
113 returns the function's declared, or derived FTYPE.
114 * new feature: SB-POSIX now supports accessing the d_ino member of
115 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
116 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
117 provide for seeding a RANDOM-STATE object with user-provided data or
118 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
119 attempt to initialize the returned state from the operating system's
120 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
121 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
122 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
123 * bug fix: Fix grammar and style issues for the docstrings of
124 printer-related variables and functions. (Thanks to mon_key; launchpad
126 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
128 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
129 in a row even though a handler defered the deadline long into the
131 * bug fix: A deadline handler was run without interrupts enabled for a
132 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
133 in infinitely spinning, non-killable threads.
134 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
135 before reaching the erring stack frame.
136 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
137 real power. (launchpad bug lp#525949)
138 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
139 GENCGC platforms. (launchpad bug lp#529014)
140 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
141 (launchpad bug lp#525916)
142 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
143 (Thanks to Robert Goldman)
145 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
146 * optimization: ROUND with a single single-float or double-float argument
147 is properly inlined when possible.
148 * optimization: Slightly better code is generated for integer<->float
149 conversions and for single-float<->double-float conversions on x86-64.
150 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
151 code for 32-bit and 64-bit rotations on x86-64.
152 * bug fix: The install script changes the ownership of directories as well
153 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
154 launchpad bug lp#508485)
155 * bug fix: TRUNCATE with a single single-float or double-float argument is
156 properly inlined when possible. (launchpad bug lp#489388)
157 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
158 no longer causes a compiler error on x86 and ppc.
159 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
160 always relative to *READTABLE* rather than the passed argument.
162 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
163 * minor incompatible change: threading support is now enabled by default
165 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
167 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
168 are now caught and reported just like errors during macroexpansion.
169 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
170 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
171 * enhancement: ASDF systems can now depends on SB-QUEUE.
172 * fixes and improvements related to Unicode and external formats:
173 ** bug fix: error handling and restart usage in the ucs-2 external format
175 ** there is now an implementation of the ucs-4 external format.
176 ** the utf-16 and utf-32 external formats are supported.
177 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
178 in the environment. setenv() and unsetenv() are also provided. (reported by
179 Fare Rideau; launchpad bug lp#460455)
180 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
181 loading. This ensures sensible errors for .FASL files from other
182 implementations on case-insensitive filesystems. (reported by Willem
183 Broekema; launchpad bug lp#489417)
184 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
185 Willem Broekema; launchpad bug lp#489698).
186 * bug fix: some minor code rearrangements to reenable warning-free building
187 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
188 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
190 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
193 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
194 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
195 * improvement: support O_LARGEFILE access to files larger than 2GB on
196 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
197 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
198 definitions for methods specializing on the passed class itself.
199 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
200 definitions for methods specializing on the passed class itself, or on
202 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
203 about itself during the build (e.g. for M-? in Slime), if this flag is
204 enabled in customize-target-features.lisp. This will increase the core
205 size by about 5-6mb, though, so it's mostly interesting to SBCL
207 * new feature: various GENCGC tuning parameters have been experimentally
208 documented and exported from SB-EXT. See documentation for details.
209 * fixes and improvements related to Unicode and external formats:
210 ** the Unicode character database has been upgraded to the
211 Unicode 5.2 standard, giving names and properties to a number of new
212 characters, and providing a few extra characters with case
214 ** improvement: restarts for providing replacement input/output on coding
215 errors for fd-stream external formats.
216 ** improvement: where :<encoding> is a keyword corresponding to an
217 external format the system supports, it is now possible to specify
218 (:<encoding> :replacement <character>) as an external format which will
219 automatically substitute <character> on encoding or decoding errors for
220 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
222 ** improvement: the file streams underlying the standard streams (such as
223 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
224 which uses the replacement mechanism to handle encoding errors,
225 preventing various infinite error chains and unrecoverable I/O
227 ** minor incompatible change: the utf-8 external format now correctly
228 refuses to encode Lisp characters in the surrogate range (char-codes
229 between #xd800 and #xdfff).
230 ** fix a typo preventing conversion of strings into octet vectors
231 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
233 ** fix a bug in the octet multibyte handling of decoding errors and the
234 USE-VALUE restart. (launchpad bug lp#314939)
235 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
236 restart on fd-stream decoding errors.
237 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
238 error is near the end of file.
239 ** fix a double-error case in unibyte octet conversions, when the first
240 use of USE-VALUE is ignored.
241 ** fix bugs in handling of undefined code points in unibyte encodings.
242 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
243 streams after an UNREAD-CHAR.
244 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
245 object is allocated in a boxed region of dynamic space.
246 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
247 fork with multiple Lisp threads running is made, instead of going
248 ahead with unpredictable consequences. (reported by Leslie Polzer)
249 * bug fix: uses of slot accessors on specialized method parameters within
250 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
251 error while finalizing the class. This fix may cause classes with slot
252 accessors to be finalized later than previously. (reported by Lars Rune
253 Nøstdal; launchpad bug lp#473699)
254 * bug fix: restore buildability on the MIPS platform. (regression from
255 1.0.30.38, reported by Samium Gromoff)
256 * bug fix: inspecting closures is less likely to fail with a type error.
257 * bug fix: no timer starvation when setting the system clock back.
258 (launchpad bug lp#460283)
259 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
260 standard pprint dispatch table as specified by CLHS.
261 * bug fix: give CLISP a hint about a type declaration to enable it to build
262 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
264 * bug fix: correctly dump literal objects in defaulting forms of arglists.
265 (reported by Attila Lendvai; launchpad bug lp#310132)
266 * bug fix: distinguish in type specifiers between arrays that might be
267 complex and arrays that are definitely complex. (launchpad bug lp#309129)
268 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
269 type. (reported by Levente Mészáros; launchpad bug lp#485972)
270 * bug fix: setting the value of a symbol-macro within a method in the
271 presence of type declarations works properly again. (reported by Iban
272 Hatchondo; launchpad bug lp#485019)
274 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
275 * optimization: faster FIND and POSITION on strings of unknown element type
276 in high SPEED policies. (thanks to Karol Swietlicki)
277 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
279 * improvement: better error signalling for bogus parameter specializer names
280 in DEFMETHOD forms (reported by Pluijzer)
281 * bug fix: DELETE-FILE once again works on logical pathnames (regression
283 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
285 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
286 removes previous default initargs (reported by Lars Rune Nøstdal and
288 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
289 lambda-lists. (reported by Peter Seibel)
290 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
291 correctly when starting from an executable core without saved runtime
292 options (reported by Faré Rideau, thanks to Zach Beane)
293 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
294 an optimization note instead. (reported by Martin Cracauer)
295 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
296 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
297 new process group if it doesn't need to share stdin with the sbcl
298 process. (thanks to Leslie Polzer)
299 * bug fix: SATISFIES could be misoptimized to refer to a local function.
300 (reported by Stanislaw Halik)
302 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
303 * improvement: stack allocation is should now be possible in all nested
304 inlining cases: failure to stack allocate when equivalent code is manually
305 open coded is now considered a bug.
306 * improvements related to Unicode:
307 ** the Unicode character database has been upgraded to the
308 Unicode 5.1 standard, giving names and properties to a number of new
309 characters, and providing a few extra characters with case
311 ** the system now recognizes and produces names for Unicode Hangul
313 ** the EBCDIC-US external-format is now supported for octet operations
314 (as well as for stream operations).
315 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
316 be used to output toplevel compile-time effects into a separate .CFASL
318 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
319 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
321 * optimization: TRUNCATE on known single- and double-floats is upto 25%
323 * optimization: division of floating point numbers by constants uses
324 multiplication by reciprocal when an exact reciprocal exists.
325 * optimization: multiplication of single- and double-floats floats by
326 constant two has been optimized.
327 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
328 sufficient type information is available. (thanks to Leslie Polzer)
329 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
330 known structure objects are as efficient as defstruct generated accessors.
331 * optimization: unused vector creation can now be optimized away.
332 * improvement: ASDF systems can now depends on SB-INTROSPECT.
333 * improvement: a STYLE-WARNING is signalled when a generic function
334 clobbers an earlier FTYPE proclamation.
335 * improvement: the compiler is able to track the effective type of
336 generic function across method addition and removal even in the
337 absence of an explicit DEFGENERIC.
338 * improvement: DESCRIBE now reports on symbols naming undefined
339 but assumed or declared function as well.
340 * improvement: recompilation of systems using SB-GROVEL now works
341 (thanks to Leslie Polzer)
342 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
343 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
345 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
346 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
347 well as user defined declaration names.
348 ** VARIABLE-INFORMATION is now aware of alien variables.
349 * improvement: improved address space layout on OpenBSD (thanks to Josh
351 * improvement: pretty-printing of various Lisp forms has been improved
352 (thanks to Tobias Rittweiler)
353 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
354 unused were deleted in safe code. (reported by John Fremlin)
355 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
357 * bug fix: some out-of-line array predicates were missing (reported by
359 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
361 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
362 (thanks to Larry D'Anna)
363 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
364 as well. (reported by Josh Elsasser)
365 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
366 leading to possible attempts to delete the same file twice. See docstring
367 on DELETE-FILE for details. (reported by John Fremlin)
368 * bug fix: DELETE-FILE once again deletes the file named by the pathname
369 designator argument, rather than its truename. (reported by Luis
371 * bug fix: the low-level debugger had 32-bit assumptions and was missing
372 information about some array types. (thanks to Luis Oliveira)
373 * bug fix: moderately complex combinations of inline expansions could
374 be miscompiled if the result was declared to be dynamic extent.
375 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
376 form (+ <variable> <integer>) were miscompiled under certain
378 * bug fix: in some cases no compiler note about failure to stack allocate
379 was emitted, even if the objects were in fact heap allocated.
380 * bug fix: minor violation of "otherwise inaccessible" rule for stack
381 allocation could cause objects users might reasonably expect to
382 be heap allocated to be stack allocated.
383 * bug fix: DESCRIBE signalled an error for generic functions under
384 certain circumstances. (thanks to Leslie Polzer)
385 * bug fix: Fixed spelling of an error message.
387 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
388 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
389 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
390 of SB-THREAD:THREAD-ERROR-THREAD.
391 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
392 * new feature: docstrings for local and anonymous functions are no longer
393 discarded. (thanks to Leslie Polzer)
394 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
395 values in other threads.
396 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
397 about object allocation.
398 * optimization: division of a real float by a complex float is implemented
399 with a specialised code sequence.
400 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
401 keywords is an order of magnitude faster.
402 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
403 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
404 methods, and similarly for non-standard metaclass classes as long as there
405 are no methods additional on MAKE-INSTANCE.
406 * optimization: more efficient type-checks for FIXNUMs when the value
407 is known to be a signed word on x86 and x86-64.
408 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
409 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
411 * optimization: compiler is smarter about delegating argument type checks to
413 * optimization: several character functions are now compiled somewhat more
414 efficiently. (reported by Lynn Quam)
415 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
416 * improvement: less unsafe constant folding in floating point arithmetic,
417 especially for mixed complex/real -float operations.
418 * optimization: constant double and single floats are stored in native
419 unboxed format on x86[-64].
420 * optimization: smarter code for arithmetic operations with constant floats,
421 complex floats, or integers on x86[-64].
422 * optimization: smarter code for conjugate/multiplication of float complexes
423 and abs/negate of floats on x86-64.
424 * optimization: more efficient complex float and real float operations on
426 * improvement: complex float division is slightly more stable.
427 * improvement: DESCRIBE output has been reworked to be easier to read and
428 contains more pertinent information.
429 * improvement: failure to provide requested stack allocation compiler notes
430 provided in all cases (requested stack allocation not happening without a
431 note being issued is now considered a bug.)
432 * bug fix: SB-POSIX exports the documented types and functions
433 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
434 types. (reported by "abhi")
435 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
436 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
437 (thanks to Paul Khuong)
438 * bug fix: looping around HANDLER-CASE could silently consume stack space
439 on each iteration. (reported by "foobar")
440 * bug fix: better error signalling when calls to functions seeking elements
441 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
442 (reported by Tobias Rittweiler)
443 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
444 directory components now works as it used to. (various prolems reported by
445 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
446 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
447 (reported by Elliot Slaughter, thanks to Stas Boukarev)
448 * bug fix: bogus undefined variable warnings from fopcompiled references to
449 global variables. (thanks to Lars Rune Nøstdal)
450 * bug fix: foreign function names should now appear in backtraces on
451 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
452 * bug fix: SETF compiler macro documentation strings are not discarded
454 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
455 (thanks to Alex Plotnick)
456 * bug fix: SLEEP accepts large integer arguments, truncating them to
457 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
458 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
459 * bug fix: compiler notes for expensive slot type checks could be emitted
460 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
462 changes in sbcl-1.0.29 relative to 1.0.28:
463 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
464 https://bugs.launchpad.net/sbcl
465 Bugs can be reported directly there, or by sending email to
466 sbcl-bugs@lists.sourceforge.net
467 (no subscription required.)
468 * minor incompatible change: under weak type checking policy integer
469 types are weakened less aggressively.
470 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
471 allowed to return, which causes SBCL to quit with exit status 0. Previously
472 if the function returned with a small integer return value, that value
473 was accidentally reused as the exit status.
474 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
475 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
476 :HASH-FUNCTION argument. Refer to user manual for details.
477 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
479 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
480 microseconds since the Unix epoch on all platforms.
481 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
482 allows the compiler to safely elide boundedness checks for special
484 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
485 the symbol, prohibits both lexical and dynamic binding. This is mainly an
486 efficiency measure for threaded platforms, but also valueable in
488 * new feature: UNC pathnames are now understood by the system on Windows.
489 * optimization: the compiler uses a specialized version of FILL when the
490 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
492 * optimization: accesses to potentially non-simple arrays where element type
493 is known are 50% faster.
494 * optimization: compiler now generates faster array typechecking code.
495 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
497 * optimization: multidimensional array accesses in the absence of type
498 information regarding array rank are approximately 10% faster due to
499 open coding of ARRAY-RANK.
500 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
501 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
503 * optimization: result of call to VECTOR can now be stack allocated.
504 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
505 as long as the resulting array is one-dimensional and has a known
506 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
507 length of the list matches the known length of the vector does not
508 allocate the list as an intermediate step. Ditto for VECTOR and simple
510 * optimization: MAKE-ARRAY can now stack allocate in the presence of
511 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
512 known element type, and is known to be simple and one dimensional.
513 * improvement: SBCL now emits a compiler note where stack allocation was
514 requested but could not be provided (not in all cases, unfortunately)
515 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
516 * improvement: pretty-printing loop has been implemented properly. (thanks
517 to Tobias Rittweiler)
518 * documentation: CLOS slot typechecing policy has been documented.
519 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
520 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
521 pointer, leading to memory faults. (thanks to Bart Botta)
522 * bug fix: better floating point exception handling on x86/OpenBSD.
523 (thanks to Josh Elsasser)
524 * bug fix: exit status from QUIT when called under --script was lost
525 (reported by Hubert Kauker)
526 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
527 same implementation of FILL to initialize the array, even if a more
528 efficient one was available (reported by Stas Boukarev, thanks to
530 * bug fix: potential miscompilation of array stack allocation on x86 and
531 x86-64. (reported by Time Tossavainen)
532 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
533 result in their subforms being treated as top level forms. (reported by
535 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
536 than a machine register could leave garbage in the high bits of the
537 result register (bug 316325).
538 * bug fix: disable address space randomization Linux/x86-64 as well,
539 not just x86-64. (reported by Ken Olum)
540 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
541 generate incorrect code.
542 * bug fix: #201; type inference for CONS and ARRAY types could derive
543 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
544 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
545 could not be assigned to or bound with PROGV. (reported by Lorenz
547 * bug fix: the value of CL:- in the inspector was the previous expression
548 evaluated rather than the expression being evaluated.
549 * bug fix: constants can no longer be locally declared special.
550 * bug fix: signals delivered to threads started from foreign land (read:
551 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
552 thread by blocking all signals and resignalling.
553 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
554 from :INITFORM, if any.
556 changes in sbcl-1.0.28 relative to 1.0.27:
557 * a number of bugs in cross-compilation have been fixed, with the ultimate
558 result that building under (at least) clisp should be much more reliable.
559 * minor incompatible changes: echo-streams now propagate unread-char to the
560 underlying input stream, and no longer permit unreading more than one
562 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
563 frames, allowing for instance more reliable backtraces.
564 * improvement: the debugger REPL can now reference lexical variables
565 by name directly for code compiled with (DEBUG 3).
566 * improvement: errors from malformed declarations now have better source
567 paths associated with them. (thanks to Tobias Rittweiler)
568 * optimization: faster local calls on x86/x86-64
569 * bug fix: some error messages for out-of-bound array indexes confused the
570 index and the bound. (thanks to Stas Boukarev)
571 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
573 * bug fix: running regressions tests in shells without OSTYPE set now works.
574 (reported by Harald Hanche-Olsen)
575 * bug fix: more robust static space exhaustion signalling from
576 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
577 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
578 docstring away instead of storing it under names such as (LAMBDA (X)).
579 (reported by Leslie Polzer)
580 * bug fix: timers could go off in the wrong order, be delayed indefinitely
581 (thanks to Ole Arndt for the patch)
582 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
583 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
584 potentially-invalid effective methods in its cache.
585 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
586 instances as well (thanks to Paul Khuong)
587 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
588 SB-POSIX:WAITPID and their C equivalents.
589 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
591 changes in sbcl-1.0.27 relative to 1.0.26:
592 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
593 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
594 * improvement: the system either recovers from stack exhaustion or dies
595 properly as opposed to leaving the user uncertain of whether the handler
596 trampled on some random memory next to the stack or having to rely on
597 --lose-on-corruption (which is still a good idea to use in production
598 because stack exhaustion can happen in signal handlers which will likely
600 * bug fix: fix gc related interrupt handling bug on ppc (regression from
601 1.0.25.37, reported by Harald Hanche-Olsen)
602 * bug fix: work around signal delivery bug in darwin (regression from
603 1.0.25.44, reported by Sidney Markowitz)
604 * bug fix: fix ERROR leaking memory (reported by David Thompson)
606 changes in sbcl-1.0.26 relative to 1.0.25:
607 * incompatible change: an interruption (be it a function passed to
608 INTERRUPT-THREAD or a timer function) runs in an environment where
609 interrupts can be enabled. The interruption can use
610 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
611 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
612 potentially running out of stack. Keep in mind that in the absence
613 of WITHOUT-INTERRUPTS some potentially blocking operation such as
614 acquiring a lock can enable interrupts.
615 * incompatible change: GC-OFF and GC-ON are removed, as they were
616 always unsafe. Use WITHOUT-GCING instead.
617 * new feature: runtime option --disable-ldb
618 * new feature: runtime option --lose-on-corruption to die at the
619 slightest hint of possibly non-recoverable errors: running out of
620 memory, stack, alien stack, binding stack, encountering a memory
621 fault, etc. In the absence of --lose-on-corruption a warning is
623 * enhancement: detect binding stack exhaustion
624 * enhancement: detect alien stack exhaustion on x86/x86-64
625 * improvement: generally more stable and reliable interrupt handling
626 * improvement: there is a per thread interruption queue,
627 interruptions are executed in order of arrival
628 * improvement: a repeating timer reschedules itself when the it has
629 finished, but expiration times are spaced equally. If an
630 expiration time is in the past it will trigger after a short grace
631 period that may give a chance to other things to run.
632 * optimization: slightly faster gc on multithreaded builds
633 * optimization: faster WITHOUT-GCING
634 * bug fix: when JOIN-THREAD signals an error, do it when not holding
635 important locks so that the debugger/handler doesn't produce
636 recursive errors or deadlock.
637 * bug fix: real-time signals are not used anymore, so no more
638 hanging when the system wide real-time signal queue gets full.
639 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
641 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
642 * bug fix: fix random memory faults related to interrupts on alpha
643 * bug fix: fix random memory faults related to interrupts on sparc
644 * bug fix: fix deadlocks related to starting threads
645 * bug fix: fix deadlines on locks on futex platforms
646 * bug fix: restore errno in signal handlers
647 * bug fix: fix deadlocks related to hash tables
648 * bug fix: fix deadlocks in pcl
650 changes in sbcl-1.0.25 relative to 1.0.24:
651 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
652 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
653 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
654 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
655 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
656 better name and does not return values so stale on multiprocessor systems.
657 Also, HOLDING-MUTEX-P was added for about the only sane usage of
659 * improvement: unithread builds keep track of MUTEX-VALUE.
660 * improvement: reading from a TWO-WAY-STREAM does not touch the output
661 stream anymore making it thread safe to have a concurrent reader and
662 a writer, for instance, in a pipe.
663 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
664 arguments, making compiler-macros for SETF-functions able to inspect
665 their constant arguments.
666 * improvement: COMPILE-FILE reports times with millisecond accuracy
667 (thanks to Luis Oliveira)
668 * optimization: CHAR-CODE type derivation has been improved, making
669 TYPEP elimination on subtypes of CHARACTER work better. (reported
670 by Tobias Rittweiler, patch by Paul Khuong)
671 * bug fix: setting alien structure fields of type struct by value now
672 computes the right offset for the memory copy.
673 * bug fix: compilation problem involving inlined calls to aliens with
674 result type VOID. (reported by Ken Olum)
675 * bug fix: #235a; sequential inline expasion in different policies no
676 longer reuses the functional from the previous expansion site.
677 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
678 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
679 * bug fix: named ENUMs in multiply-referenced alien record types no longer
680 cause an implied type redefinition. Regression from 1.0.21.29.
681 * bug fix: sign-extension of small signed return values now works with C
682 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
683 * improvements to the Windows port:
684 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
685 Westfold, thanks to Rudi Schlatte)
687 changes in sbcl-1.0.24 relative to 1.0.23:
688 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
689 vector of a multidimensional SIMPLE-ARRAY.
690 * new feature: the system now signals a continuable error if standard
691 readtable modification is attempted. (thanks to Tobias Rittweiler)
692 * new feature: DIRECTORY has been extended with a non-standard keyword
693 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
694 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
695 has been robustified and documented better. (thanks to Robert Goldman)
696 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
697 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
698 * tradeoff: constant FORMAT control strings are now compiled unless
699 SPACE > SPEED (previously only when SPEED > SPACE.)
700 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
702 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
704 * bug fix: lexical type declarations are now correctly reported by
705 SB-CLTL2. (reported by Larry D'Anna)
706 * bug fix: STRING-TO-OCTETS did not handle :START properly when
707 using UTF-8 as external format. (thanks to Luis Oliveira)
708 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
709 are signalled correctly. (thanks to Stas Boukarev)
710 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
711 designator. (thanks to Tobias Rittweiler)
712 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
713 designator, and returns T instead of the function. (thanks to
715 * bug fix: direct superclasses of STANDARD-CLASS and
716 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
717 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
718 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
719 when no class with the named slot yet exists no longer causes a
720 compile-time style-warning.
721 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
722 in safe code. (reported by Didier Verna)
723 * bug fix: #430; nested structure constructors can stack allocate.
724 * bug fix: on some 64-bit platforms dynamic space size was truncated
725 to #xffff0000 bytes. (reported by Benjamin Lambert)
726 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
727 REPL unusable. (reported by Daniel Herring)
728 * bug fix: return values of READ-SEQUENCE did not take :START into
729 account on file streams, regressions since 1.0.12.22. (reported by
730 Thomas Russ, patch by Paul Khuong)
731 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
732 method specializer used to confuse permuation vector optimization.
733 * bug fix: system inserted bogus implicit type declarations for local
734 special variables in DEFMETHOD bodies.
735 * bug fix: #354; duplicated frames in backtraces due to
736 non-tail-call-optimized XEPs to functions with return type NIL
738 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
739 initializes structure object slots according to DEFSTRUCT initforms,
740 and DEFSTRUCT forms :INCLUDEind structure classes defined using
741 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
742 (reported by Bruno Haible and Stephen Wilson)
743 * bug fix: #395; fill-pointer output streams used now support
744 element-type BASE-CHAR as well.
745 * bug fix: compiler error when attempting to derive return value of
746 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
748 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
750 * bug fix: Mac OS X binaries should now be portable between Leopard
753 changes in sbcl-1.0.23 relative to 1.0.22:
754 * enhancement: when disassembling method functions, disassembly
755 for the associated fast function is also produced.
756 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
758 * optimization: printing with *PRINT-PRETTY* true is now more
759 efficient as long as the object being printed doesn't require
760 special handling by the pretty printer.
761 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
762 now interact correctly with type declarations.
763 * partial bug fix: PCL detects infinite recursion during wrapper
764 validation. (thanks to Attila Lendvai)
765 * bug fix: #426; nested function calls are inlined properly.
766 Previously if FOO was an inline function, in calls of the form
767 (FOO (FOO ...)) the outer call was not inlined.
768 * bug fix: long long arguments passed in registers to alien
769 functions on PowerPC Linux and NetBSD are now handled correctly
770 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
772 changes in sbcl-1.0.22 relative to 1.0.21:
773 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
774 for the shared object in the current directory, but passes the native
775 namestring of the designated pathname to the operation system's shared
776 object loading function as-it.
777 * minor incompatible change: --disable-debugger toplevel option now takes
778 effect before processing of initialization files and --eval or --load
780 * new feature: new commandline argument: --script, which supports
781 shebang lines. See documentation for details. (based on work by
783 * new feature: SAVE-LISP-AND-DIE can save current values of
784 --dynamic-space-size and --control-stack-size in the executable core,
785 causing it to skip normal runtime option processing. See documentation
786 for details. (thanks to Zach Beane)
787 * enhancement: inoccous calls to EVAL or generic functions dispatching
788 on subclasses of eg. STREAM no longer cause compiler notes to appear.
789 * enhancement: the system no longer resignals errors from --load and
790 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
791 associated with the original error to be lost. (thanks to Ariel
793 * enhancement: :DONT-SAVE keyword argument has been added to
794 LOAD-SHARED-OBJECT for controlling interaction with
795 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
796 the effects of an earlier LOAD-SHARED-OBJECT call.
797 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
798 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
799 provided. (reported by Cedric St-Jean)
800 * bug fix: circularity handling in the reader did not treat raw
801 structure slots correctly. (reported by Cedric St-Jean)
802 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
803 file descriptors when there were none.
804 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
805 was broken. (reporteed by Willem Broekema)
806 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
807 pathnames without a directory.
808 * bug fix: COMPILE-FILE did not warn about undefined variable
809 references at toplevel, and LOAD of the resulting fasl did
811 * bug fix: functions with non-required arguments used to end up with
812 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
813 * bug fix: redefining a function with non-required arguments didn't
814 update the system's knowledge about its call signature properly.
815 * bug fix: fixed #431; incompatible alien record type redefinitions
816 are detected and handled. (reported by Neil Haven)
817 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
818 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
820 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
821 after alien stack frames.
822 * bug fix: strings passed to mk{s,d}temp lacked null termination
824 changes in sbcl-1.0.21 relative to 1.0.20:
825 * new feature: the compiler is able to track the effective type of a
826 generic function across method addition and removal.
827 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
828 appropriately typed structure slots without locking.
829 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
830 information like those gathered by TIME using a programming-friendly
832 * new feature: TIME reports time taken even if the form performs a
833 non-local transfer of control.
834 * enhancement: reduced conservativism on GENCGC platforms: on
835 average 45% less pages pinned (measured from SBCL self build).
836 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
837 mutate constant symbols or violate declaimed type of the symbol.
838 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
839 sleeping on the semaphore in heavily contested semaphores.
840 * bug fix: semaphores and condition variables were not interrupt
842 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
843 owned by other threads anymore.
844 * bug fix: FIND on lists called KEY outside the specified
845 subsequence. (reported by budden)
846 * bug fix: LOG doesn't use single-float intermediate results when
847 given mixed integer and double-float arguments, leading to better
848 precision. (reported by Bob Felts)
849 * bug fix: LOG with base zero returned values of inconsistent type.
851 changes in sbcl-1.0.20 relative to 1.0.19:
852 * minor incompatible change: OPTIMIZE qualities
853 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
854 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
855 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
856 * documentation: some slot access efficiency guidelines have been
857 added to the user manual.
858 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
859 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
860 as ASSOC and MEMEBER.
861 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
862 to more efficient EQ-comparison versions more often.
863 * optimization: enhanced derivation of DOLIST iteration variable type
865 * optimization: constant folding of simple (LIST ...) forms as DOLIST
867 * optimization: runtime lookup of function definitions can be
868 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
869 * optimization: compiler is able to derive the return type of
870 (AREF (THE STRING X) Y) as being CHARACTER.
871 * optimization: CLRHASH on empty hash-tables no longer does pointless
872 work. (thanks to Alec Berryman)
873 * optimization: REPLACE deftransforms don't punt when :START1 or
875 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
876 no longer emits a code deletion note. (reported by Andrew
878 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
879 functions with an odd number of &OPTIONAL arguments, a &REST
880 argument, and one or more &KEY arguments at the call site.
881 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
882 arguments appeared at call sites as well.
883 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
884 READ-LINE &co can no longer read from them afterwards. (reported
886 * bug fix: fixed #427: unused local aliens no longer cause compiler
887 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
889 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
890 alien-stack leakage. (reported by Andy Hefner)
891 * bug fix: PROGV signals an error when an attempt to violate declared
892 type of a variable or bind a constant is made.
893 * bug fix: SET signals an error when an attempt to violate declared
894 type of a variable is made.
895 * bug fix: restart computation during the execution of a restart
896 test function no longer causes infinite recursion. (reported by
898 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
899 signals an error. (thanks to Pierre Mai)
900 * bug fix: EXPORT left symbol unexported in conflict situations.
901 (thanks to Michael Weber)
902 * bug fix: correctly handle name conflicts involving CL:NIL.
903 (thanks to Michael Weber)
904 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
905 conflicts arising from USEing package with conflicting symbols
906 correctly. (thanks to Michael Weber)
908 changes in sbcl-1.0.19 relative to 1.0.18:
909 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
910 warnings that go otherwise unhandled will be muffled if they are
911 of the type that's the value of this variable.
912 * optimization: stack allocation is slightly more efficient on x86
914 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
915 where a raw slot always is initialized using the initform whose
916 type is not know sufficiently well a compile-time are now compiled
917 correctly. (reported by John Morrison)
918 * bug fix: compiler no longer makes erronous assumptions in the
919 presence of non-foldable SATISFIES types.
920 * bug fix: stack analysis missed cleanups of dynamic-extent
921 arguments in non-let-converted calls to local functions.
922 * improvements to the Windows port:
923 ** adjusted address spaces for building on both Win32 and
924 Win64. (thanks for John Connors)
925 * fixed some bugs revealed by Paul Dietz' test suite:
926 ** interval arithmetic during type derivation used inexact integer
927 to single-float coercions.
928 ** arithmetic operations involving large integers and single
929 floats give the same results in compiled and interpreted code.
930 ** deriving the result type of COERCE no longer signals an error
931 if the derived type of the second argument is a MEMBER type
932 containing invalid type specifiers.
933 ** ADJOIN with constant NIL as second argument works correctly.
934 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
936 changes in sbcl-1.0.18 relative to 1.0.17:
937 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
938 profiles only the current thread.
939 * minor incompatible change: changes to SYMBOL-VALUE of constants
940 defined with DEFCONSTANT now signal an error.
941 * enhancement: SB-SPROF now has support for wallclock profiling,
942 and is also able to profile specific threads. REPORT output
943 has also additional sorting options.
944 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
946 * optimization: structure allocation has been improved
947 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
948 ** out of line constructors are ~10% faster.
949 ** inline constructors are ~15% faster.
950 ** inline constructors are capable of dynamic extent allocation
951 (generally on x86 and x86-64, in some cases on other platforms
953 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
955 * optimization: file compiler is now able to coalesce non-circular
956 lists, non-base strings, and bit-vectors. Additionally, constants
957 are never referenced through SYMBOL-VALUE at runtime.
958 * optimization: code defining methods on PRINT-OBJECT (and other
959 generic functions in the COMMON-LISP package) now loads faster.
960 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
962 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
963 fasl is now deleted. (reported by Attila Lendvai)
964 * bug fix: READ-LINE always returned NIL for the last line in files.
965 (reported by Yoshinori Tahara)
966 * bug fix: more accurate disassembly annotations of foreign function
967 calls. (thanks to Andy Hefner)
968 * bug fix: trimming non-simple strings and non-string string
969 designators when the there is nothing to trim works properly.
970 (thanks to James Knight)
971 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
972 (thanks to Travis Cross)
973 * fixed some bugs revealed by Paul Dietz' test suite:
974 ** NIL is a valid function name (regression at 1.0.13.38)
975 ** FILL on lists was missing its return value (regression at 1.0.12.27)
976 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
977 fill pointers properly (regression at 1.0.12.23)
978 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
979 displacement indices properly (regression at 1.0.12.23)
981 changes in sbcl-1.0.17 relative to 1.0.16:
982 * temporary regression: user code can no longer allocate closure
983 variable storage on stack, due to bug 419 without explicitly
984 requesting it. Please consult sbcl-devel for advice if you need to
985 use this feature in the meanwhile.
986 * new feature: runtime argument --control-stack-size can be used to
987 adjust thread default control stack size.
988 * enhancement: improved TIME output
989 ** all times are reported using the measured accuracy (milliseconds
990 for real and GC times, microseconds for everything else.)
991 ** processor cycle counts on x86 and x86-64.
992 ** interpreted forms are counted for both evaluator modes.
993 ** number of lambdas converted by the compiler is reported.
994 ** CPU percentage report (computed from real and total run time.)
995 ** more comprehensive run time reporting, using a condenced format
996 ** interperted form, lambda, and page fault counts are omitted
998 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1000 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1001 * optimization: two argument forms of LAST are upto ~10% faster
1002 in normal SPEED policies.
1003 * optimization: NCONC no longer needs to heap cons its &REST list
1004 in normal SPEED policies.
1005 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1006 to Sidney Markowitz)
1007 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1008 regression since 1.0.9.1. (thanks to Eric Marsden)
1009 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1010 since 1.0.15.36. (thanks to Paul Khuong)
1011 * bug fix: LAST when always returned the whole list when given a bignum
1012 as the second argument.
1013 * bug fix: dynamic extent allocation of nested lists and vectors
1014 could leak to otherwise accessible parts.
1015 * bug fix: invalid optimization of heap-allocated alien variable
1017 * bug fix: fasl header checking is less vulnerable to different
1018 platform word lengths.
1019 * bug fix: more correct assembler syntax for GNU binutils
1020 2.18.50.0.4 support. (thanks to Marijn Schouten)
1021 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1023 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1024 declarations) successfully. (reported by Attila Lendvai)
1026 changes in sbcl-1.0.16 relative to 1.0.15:
1027 * minor incompatible change: revert the changes to sb-posix's error
1028 signaling added in 1.0.14.
1029 * minor incompatible change: change PROBE-FILE back to returning
1030 NIL whenever we can't get a truename, as was the case before 1.0.14.
1031 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1032 inherits from ERROR instead of just CONDITION.
1033 * new feature: SB-INTROSPECT can provide source locations for instances
1034 as well. (thanks to Tobias Rittweiler)
1035 * optimization: binding special variables now generates smaller code
1036 on threaded platforms.
1037 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1038 and cases where no :TEST is given but the compiler can infer that
1039 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1040 * optimization: better LOGNOT on fixnums.
1041 * optimization: modular arithmetic for a particular requested width
1042 is implemented using a tagged representation unless a better
1043 representation is available.
1044 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1045 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1046 for wellformedness and returns a specialized vector. (reported by
1047 Francois-Rene Rideau)
1048 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1049 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1050 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1051 unscheduling timer at the same time as another timer fires.
1052 * bug fix: don't reschedule timers for dead threads.
1053 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1054 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1055 bogus errors if select() was interrupted.
1056 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1058 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1059 * enhancement: cleaner backtraces for interactive interrupts, as
1060 well as other cases where the interesting frames used to be
1061 obscured by interrupt handling frames.
1062 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1063 now supported, and tracing a whole package using (TRACE "FOO") now
1064 traces SETF-functions as well.
1065 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1066 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1067 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1068 * unreadably printed representation of hash-tables now includes
1070 * bug fix: partially fixed #188: type propagation from assignments
1071 is now more efficient.
1072 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1073 'DOUBLE-FLOAT) are not flushable.
1074 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1075 full address of the object, and none of the tag bits.
1076 * bug fix: readably printing hash-tables now respects other printer
1077 control variables. (reported by Cedric St-Jean)
1078 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1079 keyword with MAKE-HASH-TABLE.
1080 * bug fix: export SB-POSIX:MKSTEMP.
1081 * bug fix: SORT was not interrupt safe.
1082 * bug fix: XREF accounts for the last node of each basic-block as
1084 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1085 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1086 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1087 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1088 create obsolete instances in the case of redefinition or
1089 obsoletion of a superclass. (thanks to Andy Hefner)
1090 * bug fix: Support for the Alpha architecture has been revived; it had
1091 suffered somewhat from lack of maintenance since sbcl-1.0.
1092 * improvements to the Windows port:
1093 ** The system detects the codepage to use at startup, instead of
1094 using the value from the saved core. (thanks to Kei Suzuki)
1096 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1097 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1098 (see documentation for details.)
1099 * revived support for OpenBSD (contributed by Josh Elsasser)
1100 * partially fixed bug #108: ROOM no longer suffers from occasional
1101 (AVER (SAP= CURRENT END)) failures.
1102 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1103 bodies no longer cause a WARNING to be signalled. (reported by
1105 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1106 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1107 the bug in TRUNCATE.) (reported by Michael Weber)
1108 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1109 no samples. (reported by Andy Hefner)
1110 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1111 no longer appear as (NIL ...) frames in backtraces.
1112 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1113 is now actually exported from SB-EXT as documented. (reported by
1115 * bug fix: sb-aclrepl now correctly understands how to inspect
1116 single-floats on 64-bit platforms where single-floats are not boxed.
1117 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1118 yet been finalized. (reported by Levente Meszaros)
1119 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1120 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1121 SBCL-specific optimize qualities.
1123 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1124 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1125 an executable in the search path, and does so in the child
1126 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1127 been removed; it can be found in the CVS history, for somebody who
1128 needs that search behavior (see the manual).
1129 * minor incompatible change: compiler policy re. weakening type
1130 checks has changed: now type checks are weakened only if SAFETY < 2
1132 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1133 unparsing of directory pathnames as files. Analogously,
1134 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1135 filename to parse into a directory pathname.
1136 * enhancement: implicit generic function creation now signals a
1137 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1138 users can bind handlers for and muffle around calls to LOAD.
1139 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1140 to be used (using the default stream external format), and allows
1141 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1142 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1143 strings and vectors whose element-type or simplicity is not fully
1144 known at compile-time.
1145 * optimization: STRING-TRIM and related functions no longer allocate
1146 a new string when no trimming needs to be performed. These functions
1147 are also faster than before when the input string has been declared
1149 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1150 * optimization: READ-LINE is significantly faster for files containing
1152 * optimization: non-open coded uses of character comparison operators
1153 (e.g. char=) no longer cons when called with more than one parameter
1154 on platforms supporting dynamic-extent allocation.
1155 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1156 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1157 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1159 * bug fix: some sequence functions elided bounds checking when
1161 * bug fix: too liberal weakening of union-type checks when SPEED >
1163 * bug fix: more bogus fixnum declarations in ROOM implementation
1166 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1167 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1168 :SYNCHRONIZED argument, which makes the hash-table safe for
1169 concurrent accesses (but not iteration.) See also:
1170 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1171 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1172 * optimization: CONCATENATE on strings is an order of magnitude faster
1173 in code compiled with (> SPEED SPACE).
1174 * optimization: SUBSEQ is ~50% faster on lists.
1175 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1176 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1177 END is smaller then START.
1178 * bug fix: SB-PROFILE will no longer report extra consing for nested
1179 calls to profiled functions.
1180 * bug fix: ROOM implementation had bogus fixnum declarations which
1181 could cause type-errors when calling ROOM on large images.
1182 * bug fix: if file compilation is aborted, the partial fasl is now
1183 deleted, and COMPILE-FILE returns NIL as the primary value.
1184 * bug fix: number of thread safety issues relating to SBCL's internal
1185 hash-table usage have been fixed.
1186 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1187 be returned from its body when the values were being returned
1188 using unknown-values return convection and the W-P-O was wrapped
1189 inside an UNWIND-PROTECT.
1190 * bug fix: sb-posix should now compile again under Windows, enabling
1191 slime to work again.
1193 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1194 * incompatible change: hash-table accessor functions are no longer
1195 automatically protected by locks. Concurrent accesses on the same hash-table
1196 from multiple threads can give inconsistent results or even corrupt the
1197 hash-table completely. Multi-threaded applications should do their own
1198 locking at the correct granularity. In the current implementation it is
1199 still safe to have multiple readers access the same table, but it's not
1200 guaranteed that this property will be maintained in future releases.
1201 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1202 and will signal an error at runtime.
1203 * enhancement: SB-THREAD package now exports a semaphore interface.
1204 * enhancement: CONS can now stack-allocate on x86 and
1205 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1207 * enhancement: nested lists can now be stack allocated on
1208 platforms providing stack allocation support.
1209 * enhancement: dynamic-extent support has been extended to support
1210 cases where there are multiple possible sources for the stack
1212 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1213 if the mutex is uncontested on Linux.
1214 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1215 as specified by the CLHS. (thanks to Tobias Rittweiler)
1216 * bug fix: NaN comparison now works on x86-64.
1217 * bug fix: CLOSE :ABORT T on a stream with pending output now
1219 * bug fix: instances of non-standard metaclasses using standard
1220 instance structure protocol sometimes missed the slot type checks
1222 * bug fix: known functions can be inlined in high-debug code.
1224 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1225 * minor incompatible change: the MSI installer on Windows no longer
1226 associates .lisp and .fasl files with the installed SBCL.
1227 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1228 on Windows. (thanks to Luis Oliviera)
1229 * new feature: SB-CLTL2 contrib module now implements
1230 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1231 * optimization: scavenging weak pointers is now more efficient,
1232 requiring O(1) instead of O(N) per weak pointer to identify
1233 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1234 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1235 method bodies using constant slot-names when the first argument is
1236 a specializer parameter for the method.
1237 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1238 names, when the class of the instance is a direct instance
1239 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1240 as slow as the constant slot-name case.)
1241 * optimization: member type construction is now O(N) instead
1243 * optimization: UNION and NUNION are now O(N+M) for large
1244 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1246 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1247 now more readable in environments like Slime which display it.
1248 (thanks to Tobias C. Rittweiler)
1249 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1250 was able to infer the correct argument type for the object on which
1251 the CAS operation was being performed.
1252 * bug fix: copy propagation interfered with parallel assignment
1253 semantics in local calls. (reported by Paul Khuong)
1254 * bug fix: the signed modular fixnum shift compiled to wrong code on
1255 x86 and x86-64. (spotted by a slight modification to some of
1258 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1259 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1260 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1261 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1263 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1264 and generic function now print the object identity for anonymous
1265 instances. (thanks to Attila Lendvai)
1266 * enhancement: as an extension to MOP, SBCL now supports SETF of
1267 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1268 (thanks to Attila Lendvai)
1269 * enhancement: sb-cover has an alternate annotation mode which puts
1270 the form annotations at the car of the form, instead of annotating
1271 it completely. The benefit of this mode is that it shows better
1272 which forms were instrumented by the compiler.
1273 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1274 by printer control variables. (reported by Dan Corkill)
1275 * bug fix: system leaked memory when delayed output was performed by
1276 the OS in smaller chunks then expected. (thanks to David Smith)
1277 * bug fix: system leaked memory when file streams were not closed
1279 * bug fix: large objects written to slow streams that were modified
1280 after the write could end up with the modified state written to
1281 the underlying file descriptor.
1282 * bug fix: multiple threads operating in parallel on the same stream
1283 could cause buffer-overflows.
1284 * bug fix: source location information is stored correctly
1285 (broken since 1.0.6). This bug would generally show up as the
1286 Slime debugger highlighting the wrong form when the sldb-show-source
1288 * bug fix: Branch forms are again annotated as branches in the sb-cover
1290 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1291 on x86-64. (reported by Gregory Vanuxem)
1292 * bug fix: EQUALP could return wrong results for structures with raw
1293 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1294 word). (reported by Vjacheslav Fyodorov)
1295 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1298 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1299 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1300 atomic compare-and-swap operations on threaded platforms.
1301 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1302 allows assigning a global minimum value to optimization qualities
1303 (overriding proclamations and declarations).
1304 * enhancement: closed over variables can be stack-allocated on x86
1306 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1308 * optimization: slot definition lookup is now O(1). This speeds up
1309 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1310 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1311 * optimization: ASSOC and MEMBER can now be open-coded for all
1312 combinations of keyword arguments when second argument is constant
1313 and SPEED >= SPACE. In other cases a specialized version is
1315 * bug fix: using obsoleted structure instances with TYPEP and
1316 generic functions now signals a sensible error.
1317 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1318 (reported by Kristoffer Kvello)
1319 * bug fix: backtrace construction is now more careful when making
1320 lisp-objects from pointers on the stack, to avoid creating bogus
1321 objects that can be seen by the GC.
1322 * bug fix: defaulting of values in contexts expecting more than 7
1323 variables now works on x86-64. (reported by Christopher Laux)
1324 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1326 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1327 as the property-list of a symbol.
1328 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1329 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1330 situations requested, are once again file-compileable. (reported
1333 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1334 * MOP improvement: support for user-defined subclasses of
1335 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1336 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1337 the expansion of DEFMETHOD, is responsible for generating a form
1338 which creates a list of specializers when evaluated. Additional
1339 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1340 debugging and introspective support.
1341 * minor incompatible change: the (unsupported) spinlock interface
1342 has changed: free spinlock now has the value NIL, and a held spinlock
1343 has the owning thread as its value.
1344 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1345 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1347 * enhancement: name of a socket-stream is now "a socket" instead of
1348 "a constant string".
1349 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1350 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1351 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1352 for generic functions. (Thanks to Tobias C. Rittweiler)
1353 * optimization: bignum printing speed has been improved by 20-40%
1354 (depending on the bignum size.)
1355 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1357 * bug fix: the cache used by the CLOS to store precomputed effective
1358 methods, slot offsets, and constant return values is now thread and
1360 * bug fix: generic function dispatch function updating is now thread
1361 and interrupt safe (in the sense that the known issues have been
1363 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1364 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1365 * bug fix: asdf systems with dependencies to the SB-POSIX or
1366 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1367 * bug fix: interrupt safety of applicable method computation has been
1370 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1371 * new contrib: sb-cover, an experimental code coverage tool, is included
1372 as a contrib module.
1373 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1374 significantly faster.
1375 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1376 produce more efficient code on x86-64 if the compiler can determine
1377 that (+ INDEX <constant>) does not require a bounds check and FOO
1378 has an element type at least 8 bits wide.
1379 * enhancement: a new, experimental synchronous timeout facility is
1380 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1381 * enhancement: when a symbol name conflict error arises, the
1382 conflicting symbols are always printed with a package prefix.
1383 (thanks to Kevin Reid)
1384 * enhancement: stepping is now once again supported on the SPARC and
1385 MIPS platforms. (It is also now more likely to work on CheneyGC
1387 * enhancement: sb-sprof can now also track and report accurate call
1389 * bug fixes: the treatment of non-standard subclasses of
1390 SB-MOP:SPECIALIZER is more correct.
1391 * incompatible change: PURIFY no longer copies the data from the
1392 dynamic space into the static and read-only spaces on platforms
1393 that use the generational garbage collector
1394 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1396 * bug fix: GC race condition occasionally resulting in crashes with
1397 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1399 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1401 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1402 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1403 * bug fix: an asynchronous interrupt could previously leave the
1404 system running with GC inhibited.
1405 * bug fix: a DECLARE form evaluated at top-level now causes an error
1406 rather than silently (or verbosely) returning NIL.
1407 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1408 result in a error being signalled due to source form lookup errors.
1409 (reported by Peter Graves)
1411 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1412 * incompatible change: removed writer methods for host-ent-name,
1413 host-ent-addresses -- changing the values did not update the DNS
1415 * minor incompatible change: changed experimental JOIN-THREAD interface
1416 * documentation: the manual now lists reader and writer methods
1417 in class slot documentation sections. (thanks to Richard M Kreuter)
1418 * documentation: unwinding from asyncronous events has been
1419 documented as unsafe.
1420 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1421 in multithreaded application code.
1422 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1423 platforms. (thanks to James Anderson for the optimization hint)
1424 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1426 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1427 variants no longer cons.
1428 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1429 their NOT- variants no longer cons.
1430 * optimization: EQUAL hash tables no longer use SXHASH for objects
1431 of all data types, but instead use an EQL hash for types for which
1432 EQUAL is the same as EQL.
1433 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1434 are significantly faster.
1435 * optimization: new STRING-OUTPUT-STREAM implementation is much
1436 faster for large outputs and conses 30% less on average.
1437 * enhancement: XREF information is now collected for references made
1438 to global variables using SYMBOL-VALUE and a constant argument.
1439 * enhancement: SIGINT now causes a specific condition
1440 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1441 * bug fix: FILE-POSITION used to signal an error in some cases where
1442 ANSI requires it to return NIL.
1443 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1444 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1445 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1447 * bug fix: bad type declaration in the CLOS implementation has
1448 been fixed. (reported by James Anderson)
1449 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1450 (thanks to Lutz Euler)
1451 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1452 required by the CLHS. (reported by Samium Gromoff)
1453 * bug fix: dead unbound variable references now signal an error.
1454 (reported by Marco Monteiro)
1455 * bug fix: / with an unused value was being deleted in safe code.
1456 (thanks to Marco Monteiro and Kevin Reid)
1457 * bug fix: number of characters that can be written onto a single
1458 line in a file is unlimited.
1459 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1460 been fixed by inhibiting interrupts for when GC is disabled.
1461 * bug fix: some interrupt safety issues with GETHASH, (SETF
1462 GETHASH), CLRHASH and REMHASH have been fixed.
1463 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1464 specifier no longer causes infinite recursion.
1465 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1466 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1467 * bug fix: an &environment argument with the correct variable information
1468 is passed to macros that are expanded during byte compilation.
1469 (reported by Samium Gromoff)
1470 * bug fix: a logic error was causing the hash function for bignums to
1471 have excessive amounts of collisions. (reported by Faré Rideau)
1472 * bug fix: modifying the contents of an array could change the return
1473 value of SXHASH on that array, which is only allowed for strings
1474 and bit vectors. (bug introduced in 0.9.16)
1475 * improvement: the x86-64/darwin port now passes all tests (except
1476 for the debugger tests) but should still be considered
1477 experimental until this is fixed.
1478 * improvement: a style-warning is signaled for CASE (etc) clauses with
1479 duplicate keys. (thanks to Kevin Reid)
1480 * improvement: macos/x86 and macos/x86-64 now use mach exception
1481 handlers for dealing with illegal instructions (for trapping and
1482 error handling) and memory protection violations (for GC).
1484 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1485 * new platform: experimental support for x86-64/darwin (MacOS).
1486 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1487 and getnameinfo sockets functions are used instead of gethostbyaddr
1488 and gethostbyname, on platforms where the newer functions are available.
1489 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1491 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1492 don't print the startup banner, but behave as if --noinform was passed
1493 as a command line argument. (thanks to Kevin Reid)
1494 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1495 * optimization: code using alien values with undeclared types is much faster.
1496 * optimization: the compiler is now able to open code SEARCH in more cases.
1497 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1498 * bug fix: using standardized COMMON-LISP special variables as loop
1499 variables no longer signals bogus package lock violations. (reported
1501 * bug fix: declaring local loop variables to be of a range-limited type
1502 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1503 (reported by Andras Simon)
1504 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1505 bugs remain on x86-64.)
1506 * bug fix: the #= and ## reader macros now interact reasonably with
1507 funcallable instances.
1508 * bug fix: type-checks for function arguments were compiled using the
1509 compiler policy settings of the wrong lexical environment (in 1.0.2
1511 * bug fix: SHADOW accepts characters as string designators, as required
1512 by the spec (thanks to Eric Marsden)
1513 * bug fix: fixed GC safety issues when foreign functions are called with
1514 non-base strings as arguments
1515 * bug fix: more consistent error output for fatal-compiler-warnings, like
1517 * bug fix: functions with proper names were showing up as NIL in
1518 backtraces (reported by Edi Weitz, regression in 1.0.2)
1520 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1521 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1522 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1523 produce more efficient code on the x86 if the compiler can determine
1524 that (+ INDEX <constant>) does not require a bounds check and FOO
1525 has an element type at least 8 bits wide.
1526 * bug fix: references to undefined variables are handled the same way
1527 in toplevel forms as in the normal compiler
1528 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1530 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1531 (thanks to Jon Buller)
1532 * improvement: faster compilation times for complex functions
1533 * improvement: added readlink support to SB-POSIX (thanks to Richard
1536 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1537 * improvement: experimental support for mach exception handling on
1538 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1540 * improvement: support for GBK external format.
1541 (thanks to Chun Tian (binghe))
1542 * improvement: the debugger now displays variables that have been closed
1543 over, in code compiled with (DEBUG 2) or higher
1544 * improvement: support for executable cores on NetBSD (thanks to
1546 * new feature: added a RESTART-FRAME debugger command
1547 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1548 be used to provide an implementation for FILE-POSITION on Gray streams
1549 (thanks to Eric Marsden)
1550 * new feature: add syslog, openlog and closelog support to SB-POSIX
1551 (thanks to Richard Kreuter)
1552 * optimization: the function call overhead in code compiled with
1553 a high DEBUG optimization setting is significantly
1554 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1555 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1556 (thanks to Tony Martinez)
1557 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1558 evaluated once (reported by Kevin Reid)
1559 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1560 works again (thanks to Kilian Sprotte)
1561 * bug fix: an error is signaled for tagbodies with duplicate tags
1562 (thanks to Stephen Wilson)
1563 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1564 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1565 stack frames from alien callbacks.
1566 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1567 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1568 65k pages (thanks to David Woodhouse)
1569 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1571 changes in sbcl-1.0.1 relative to sbcl-1.0:
1572 * new platform: FreeBSD/x86-64, including support for threading.
1573 * new feature: the compiler stores cross-referencing information
1574 about function calls (who-calls), macroexpansion (who-macroexpands)
1575 and special variables (who-binds, who-sets, who-references) for code
1576 compiled with (< SPACE 3). This information is available through the
1577 sb-introspect contrib.
1578 * new feature: users may subclass SEQUENCE, and have instances of
1579 these classes interoperate with standard Common Lisp functions if
1580 a number of methods are defined. (This feature is experimental
1581 and the interface subject to change based on feedback from SBCL
1582 users and the general community)
1583 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1584 x86/x86-64, rather than the previous fixed depth of 8
1585 * improvement: another pthread back-end of mutex "pthread-futex".
1586 * bug fix: non-ascii command-line arguments are processed correctly
1587 (thanks to Yaroslav Kavenchuk)
1588 * bug fix: non-required arguments were not passed correctly when a method
1589 defined using DEFMETHOD was called from a mop-generated method using
1590 CALL-NEXT-METHOD (reported by Pascal Costanza)
1591 * bug fix: recursion is now permitted in accessors through
1592 SLOT-UNBOUND. (reported by Pascal Costanza)
1593 * bug fix: an error was signaled at startup if the HOME environment
1594 variable was defined, but had an empty value (reported by Peter Van Eynde)
1595 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1596 signal a PROGRAM-ERROR, not a BUG.
1597 * bug fix: SB-POSIX:READDIR works when built with large file support.
1598 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1600 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1601 for better automatic indentation support. (thanks to Matt Pillsbury)
1602 * optimization: loading generic functions no longer takes O(n^2) time,
1603 proportional to the amount of methods in the generic function
1604 (reported by Todd Sabin and Jeremy Brown)
1605 * optimization: the FIND and POSITION family of sequence functions
1606 are significantly faster on arrays whose element types have been
1608 * improvements to the Windows port:
1609 ** Intermittent heap corruption problems have been fixed. (thanks
1610 to Alastair Bridgewater)
1611 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1613 ** Lisp is able to unwind foreign exception frames from alien
1614 callbacks. (thanks to Alastair Bridgewater)
1616 changes in sbcl-1.0 relative to sbcl-0.9.18:
1617 * improvement: experimental support for threading on FreeBSD/x86.
1618 (thanks to NIIMI Satoshi)
1619 * improvement: runtime option --dynamic-space-size can be used
1620 to set the size of the dynamic space reserved on startup.
1621 * improvement: floating point modes in effect are now saved in
1622 core, and restored on startup.
1623 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1624 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1625 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1626 threads are not running after *SAVE-HOOKS* have run.
1627 * improvement: writes to CLOS instance slots are type-checked in code
1628 compiled with (SAFETY 3)
1629 * improvement: floating-point exception handling on FreeBSD (thanks to
1631 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1632 (thanks to Zach Beane)
1633 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1635 * improvement: added support for the Shift-JIS external format.
1636 (contributed by NIIMI Satoshi)
1637 * improvement: callbacks are supported on Linux/PPC. (thanks to
1639 * bug fix: compiler bug triggered by a (non-standard) VALUES
1640 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1641 * bug fix: file compiler no longer confuses validated and already
1642 dumped structurres. (reported by Kaersten Poeck)
1643 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1644 fill-pointer signals a type-error as required. (thanks to
1646 * bug fix: disassemly of funcallable instances works.
1647 * bug fix: single stepping on PPC.
1648 * bug fix: fix thread-safety problems in the type system (generally
1649 manifesting as nonsensical errors like "STRING is a bad type specifier
1650 for sequences" or "The value 1 is not of type FIXNUM")
1651 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1652 (reported by Josip Gracin)
1653 * bug fix: an error is signaled for attempts to displace arrays with
1654 incompatible element types (thanks to Mario Mommer)
1655 * bug fix: more correct handling of wide characters in debug info
1656 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1657 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1658 and don't cause extra consing
1659 * optimization: MAP and MAP-INTO are significantly faster on vectors
1660 whose elements types have been declared.
1661 * Improvements to SB-SPROF:
1662 ** Support for allocation profiling
1663 ** Reduced profiling overhead, especially for long profiling runs
1664 * Improvements to the Windows port:
1665 ** floating point exceptions are now reported correctly.
1666 ** stack exhaustion detection works partially.
1667 ** more accurate GET-INTERNAL-REAL-TIME.
1668 ** better RUN-PROGRAM behaviour in case of errors in the child
1670 ** PROBE-FILE now simplifies pathnames correctly.
1671 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1672 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1673 1st 1970 (although time timezone data will be unreliable).
1674 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1676 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1677 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1678 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1680 * bug fix: two potential GC deadlocks affecting threaded builds.
1681 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1682 returns T (reported by Anton Kazennikov)
1683 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1684 with non-variable places
1685 * bug fix: remove a race condition in the setting of
1686 funcallable-instance functions, this should make threaded CLOS
1687 code more stable against memory faults.
1688 * bug fix: corruption of specials when unbinding is interrupted by an
1689 asynchronous unwind (reported by Hannu Koivisto)
1690 * improvement: the debugger will now also display local variables that
1691 are only used once, for code compiled with a DEBUG optimization quality
1694 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1695 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1696 * incompatible change: External-format support for FFI calls. The
1697 SB-ALIEN:C-STRING no longer implies an ASCII
1698 external-format. Instead the string is subject to external-format
1699 conversion. Additionally return values of type SB-ALIEN:C-STRING
1700 are by default of type (SIMPLE-ARRAY CHARACTER), not
1701 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1702 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1703 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1704 * incompatible change: SB-EXT package no longer contains the
1705 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1706 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1708 * incompatible change: the single-stepper is no longer available
1709 on Alpha, Mips and Sparc platforms.
1710 * minor incompatible change: the direct superclasses of
1711 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1712 not (STANDARD-OBJECT FUNCTION). This makes the
1713 class-precedence-lists of GENERIC-FUNCTION and
1714 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1716 * minor incompatible change: the default stream external format on
1717 non-unicode SBCL is no longer detected from the locale, but is always
1719 * new feature: Add a version of evaluator that uses an interpreter instead
1720 of the compiler. EVAL still uses the compiler by default, to switch it
1721 to use the interpreter, set the value of the variable
1722 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1723 * minor incompatible change: the single-stepper REPL has been merged
1724 with the normal debugger (see the "Stepping" heading of the debugger help
1725 for more details). The debugger command STEP will no longer switch
1726 to the single-stepper REPL.
1727 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1728 for a type now works.
1729 * bug fix: loading of default sysinit file works. (thanks to Leonid
1731 * bug fix: better detection of circularities in the file-compiler.
1732 (reported by Marco Monteiro)
1733 * bug fix: the CL pathname functions now work with files that have
1734 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1735 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1736 systems with Unix98 pty semantics.
1737 * bug fix: ASDF-INSTALL will now work with bsd tar.
1738 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1740 * bug fix: timers expiring in dead threads no longer cause a
1741 type-error (reported by Paul "Nonny Mouse").
1742 * bug fix: thanks to more lightweight single-stepper instrumentation,
1743 code compiled with (DEBUG 3) will compile and execute significantly faster,
1744 and will have more accurate type-inferencing than before
1745 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1746 whose bindings are modified
1747 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1748 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1749 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1750 CL:SOFTWARE-VERSION with proper version
1752 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1753 * feature: implemented the READER-METHOD-CLASS and
1754 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1755 as specified by AMOP.
1756 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1758 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1759 (thanks to Lutz Euler)
1760 * optimization: hashing of general arrays and vectors has been
1761 improved. (reported by Any Fingerhut)
1762 * enhancement: SB-INTROSPECT is now able to find definitions of
1763 profiled functions. (thanks to Troels Henriksen)
1764 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1765 as well, allowing compiler-macros for SETF-functions to expand.
1766 * enhancement: step-instrumentation no longer wraps known
1767 single-value functions with multiple-value context, allowing
1768 better type inference.
1769 * fixed bug #337: use of MAKE-METHOD in method combination now works
1770 even in the presence of user-defined method classes. (reported by
1771 Bruno Haible and Pascal Costanza)
1772 * fixed bug #339(c): if there are applicable methods not part of any
1773 long-form method-combination group, call INVALID-METHOD-ERROR.
1774 (reported by Bruno Haible)
1775 * fixed bug #361: the :FUNCTION initarg in the protocol for
1776 initialization of methods can now be used to override
1777 internally-produced optimized functions. (reported by Bruno
1779 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1780 system-provided lambda expression no longer cause warnings about
1781 unbound #:|pv-table| symbols.
1782 * bug fix: improved the handling of type declarations and the
1783 detection of violations for keyword arguments with non-constant
1785 * bug fix: potentially erronous calls to PATHNAME and
1786 MERGE-PATHNAMES were being flushed in some cases.
1787 (reported by Richard Kreuter)
1788 * bug fix: compiled calls to TYPEP were mishandling obsolete
1789 instances. (reported by James Bielman and Attila Lendvai)
1790 * bug fix: format strings with ~> without matching ~< no longer
1791 trigger an AVER, but signal an understandable error instead.
1792 (reported by Antonio Martinez)
1793 * bug fix: specifying an output-file without a pathname-type for
1794 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1795 of input-file instead of "fasl". (reported by Robert Dodier)
1796 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1797 (reported by James Y Knight).
1798 * bug fix: compiler-macros-function did not consider the environment
1799 argument for shadowing by local functions.
1800 * bug fix: compiler-macros expansion was inhibited by local INLINE
1802 * bug fix: inline expansions of known functions were subject to
1803 step-instrumentation in high debug policies, leading to problems
1804 with type-inference.
1805 * bug fix: compiler failed to differentiate between different CONS
1806 types in some cases.
1807 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1808 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1809 * bug fix: #368: incorrect use of expressed vs. upgraded array
1811 * bug fix: #306a: more precise unions of array types.
1812 * thread-safety improvements:
1813 ** CONDITION-WAIT could return early on Linux, if the thread was
1814 interrupted and subsequently continued with SIGCONT.
1815 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1817 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1818 * added support for the ucs-2 external format. (contributed by Ivan
1820 * minor incompatible change: pretty printing of objects of type
1821 (cons symbol) is, in the default pprint-dispatch-table, now
1822 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1824 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1825 called later in a class's lifetime, possibly as late as when the
1826 first instance of the class is created. Previously,
1827 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1828 class became finalizeable.
1829 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1830 for multibyte external-format streams. (thanks to "vbzoli")
1831 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1832 with :ALLOCATION :CLASS inherited from superclasses of the
1834 * fixed bug: anonymous classes can now be created using the :NAME
1835 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1836 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1837 * fixed bug: core-files saved with :EXECUTABLE T can again be
1838 executed when SBCL_HOME isn't set. (reported by James Knight)
1839 * fixed bug: toplevel LOCALLY forms with declarations could
1840 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1841 * fixed bug: printing from several different threads using different
1842 values of *print-case* could cause invalid output, due to
1843 some internal special variables of the printer not being bound
1844 thread-locally (reported by Max Mikhanosha)
1845 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1846 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1847 (reported by Pascal Costanza)
1848 * fixed bug: FINALIZE-INHERITANCE is called from
1849 REINITIALIZE-INSTANCE on classes when the class has previously
1850 been finalized, as required by AMOP.
1851 * minor code generation optimizations:
1852 ** better register allocation in CLOS dispatching functions
1853 ** overflow detection when coercing signed bytes to fixnums on x86-64
1854 ** is now implemented with one IMUL instruction instead of three shifts
1855 ** more efficient bit-vector access on x86 and x86-64
1856 ** more efficient access to raw structure slots on x86 and x86-64
1857 * fixed some bugs revealed by Paul Dietz' test suite:
1858 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1859 return its argument.
1861 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1862 * feature: thread support on Solaris/x86, and experimental thread support
1864 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1866 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1867 default method for SLOT-UNBOUND.
1868 * minor incompatible change: prevent the user from specializing the
1869 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1870 somewhat counter to the intent of the protocol, I (CSR) think, and
1871 additionally it just doesn't work in SBCL as currently
1872 implemented, thanks to optimizations (that are always valid for
1873 the other three SLOT-VALUEish functions, but not for the setter).
1874 * minor incompatible change: the :SB-LDB feature is now enabled by
1875 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1876 the low-level debugger.
1877 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1878 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1879 down to an SB-SYS:FD-STREAM, allowing direct communication in
1880 more cases. Temporary files and pipes are still used as a fallback
1882 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1883 on the non-reentrant C functions localtime(3) and gmtime(3).
1884 * bug fix: global optimization policy was not visible in LOCALLY and
1886 * bug fix: class objects can be used as specializers in methods.
1887 (reported by Pascal Costanza)
1888 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1889 with a type error. (reported by blitz_ on #lisp)
1890 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1891 failed with a type error. (reported by Pascal Bourguignon)
1892 * bug fix: merging pathnames against defaults with :DIRECTORY
1893 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1894 (reported by James Y Knight)
1895 * bug fix: saving large (>2GB) cores on x86-64 now works
1896 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1897 constant index and a (simple-array (signed-byte 32)) array
1898 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1899 error (patch by Robert J. Macomber)
1900 * feature: TIME now displays the amount of run-time spent in GC
1901 * bug fix: The debugger now does a better job of respecting
1902 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1903 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1904 workaround for bug 403.)
1905 * bug fix: floating point exception handling now works on FreeBSD
1906 (thanks to NIIMI Satoshi)
1907 * fixed some bugs revealed by Paul Dietz' test suite:
1908 ** MISC.641: LET-conversion were not supposed to work in late
1910 * improvements to the Win32/x86 port:
1911 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1912 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1914 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1915 * new feature: source path information is generated for macro-expansion
1916 errors for use in IDE's like Slime (thanks to Helmut Eller)
1917 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1918 * bug fix: compiler does not loop forever on an invalid type in
1920 * improvement: compilation of most CLOS applications is significantly
1922 * optimization: added a limited bytecode compiler for simple toplevel
1923 forms, speeding up compilation and FASL loading
1924 * bug fix: the statistical profiler now properly distinguishes anonymous
1927 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1928 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1929 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1930 into subclasses of the finalized class. Now user calls to
1931 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1932 system return before any subclasses are finalized.
1933 * minor incompatible change: The reader no longer ignores errors
1934 regarding non-existent packages in #+ and #- feature tests.
1935 * new feature: command line options --no-sysinit, --no-userinit to
1936 inhibit loading the corresponding init files
1937 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1938 for sending data through UDP sockets (thanks to François-René Rideau)
1939 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1940 error is signalled instead (thanks to François-René Rideau)
1941 * minor incompatible change: Error signalling behaviour of lexical
1942 operations violating package locks has changed slightly. Refer to
1943 documentation on package locks for details.
1944 * enhancement: EVAL can process IF-expressions without resorting to the
1946 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1947 constant-folded properly due to missing out-of-line functions.
1948 (reported by Mika Pihlajamäki)
1949 * bug fix: LISTEN sometimes returned T even in cases where no data was
1950 immediately available from the stream
1951 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1952 were reversed. (reported by Levente Mészáros)
1953 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1954 when given a vector displaced to an adjustable array. (reported
1956 * bug fix: derivation of float boundaries from numbers outside the
1957 appropriate float range (reported by John Wiseman)
1958 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1960 * bug fix: precomputing cache entries for generic functions with
1961 some subclasses of specializers as yet invalid does not attempt to
1962 fill a cache line with a negative offset. (reported by Levente
1964 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1965 allow condition class objects as arguments to DOCUMENTATION and
1966 (SETF DOCUMENTATION); only find and set documentation for
1967 structure names for the STRUCTURE doc-type. (suggested by Gary
1969 * improvements to the Win32/x86 port:
1970 ** (user-homedir-pathname) and default initialization file
1971 locations now know about the user's "Documents and Settings"
1972 directory (thanks to Yaroslav Kavenchuk)
1973 ** run-program is implemented (thanks to Mike Thomas)
1974 ** sockets support (thanks to Timothy Ritchey)
1975 ** better backtrace support (thanks to Alastair Bridgewater)
1976 ** sb-grovel supported
1977 ** asdf-install and sb-posix work somewhat
1978 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1979 * improvements to the Solaris/x86 port:
1980 ** works on Solaris 11/Solaris Express
1981 ** floating-point exception handling support
1982 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1983 * fixed some bugs revealed by Paul Dietz' test suite:
1984 ** REMOVE-METHOD returns its generic function argument even when
1985 the method is not one of the generic functions' methods.
1986 ** objects declared as MEMBER types can be admissible arguments to
1987 structure accessors.
1988 ** printing characters should simply be printed by the FORMAT ~:C
1990 ** compiler failure when compiling functions with hairy constant
1991 defaults for optional parameters.
1992 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1993 function, which is already optimized.
1995 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1996 * new platform: experimental support for SBCL x86/Darwin, including
1997 MacOS X 10.4.5 on Intel.
1998 * new feature: Unicode character names are now known to the system
1999 (through CHAR-NAME and NAME-CHAR).
2000 * new feature: the filesystem location of SBCL's core file is
2001 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2002 * minor incompatible change: the contrib modules SB-POSIX and
2003 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2004 this change is to make it easier to distribute
2005 location-independent binaries.
2006 * bug fix: as implied by AMOP, standardized classes no longer have
2007 slots named by external symbols of public packages. (reported by
2009 * optimization: calling functions via constant symbols -- as in
2010 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2011 via the function object as in (FUNCALL #'FOO).
2012 * optimization: on x86 and x86-64, the calling convention for the
2013 case of dealing with an unknown number of values has been altered
2014 to be friendlier to the prediction heuristics implemented,
2015 particularly with reference to CALL and RET pairing. (thanks to
2016 Alastair Bridgewater)
2017 * optimization: on x86, the code for access to thread-local symbol
2018 values and binding/unbinding of thread-local symbols is smaller.
2019 (thanks to Alastair Bridgewater)
2020 * enhancement: CONSTANTP is now able to determine constantness of
2021 more complex forms, including calls to constant-foldable standardized
2022 functions and some special forms beyond QUOTE.
2023 * fixed bug: occasional GC crashes on Solaris/x86
2024 * optimization: x86-64 supports stack allocation of results of simple
2025 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2026 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2027 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2028 (thanks to James Knight)
2029 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2030 by the standard (thanks to Stephen Compall)
2032 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2033 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2034 be used for bundling the runtime and the core file into one
2035 executable binary. This feature is not currently supported on all SBCL
2036 platforms. (thanks to James Bielman and NIIMI Satoshi)
2037 * new feature: a generational or ephemeral garbage collector is now
2038 the default on the PowerPC platform (both Linux and Darwin). The
2039 old Cheney (stop and copy) collector is a build-time option.
2040 (thanks to Cyrus Harmon, after Raymond Toy)
2041 * minor incompatible change: the method by which SBCL finds its
2042 contributed modules has changed; it no longer relies on symbolic
2043 links from an $SBCL_HOME/systems directory, but searches directly
2044 in the subdirectories of $SBCL_HOME.
2045 * enhancement: the dynamic heap size on the Linux/PPC platform is
2046 markedly larger, even using the older Cheney garbage collector.
2047 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2048 certain complicated string types. (reported by Gary King)
2049 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2050 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2051 * fixed bug: DOCUMENTATION on structures no longer signals an
2052 error if no structure type of the right name exists. (reported by
2054 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2055 applicable non-standard primary or :AROUND method on
2056 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2057 no longer cause unbound variable errors. (reported by Kevin Reid)
2058 * fixed bug: metacircle resolution in cases where methods have slots
2059 added before the slots from STANDARD-METHOD. (reported by Jean
2061 * fixed bug: the Power PC assembly code for calling into lisp
2062 sometimes computed its return address wrongly (depending on the
2063 15th bit of the address, fixed at link time). This used to
2064 manifest itself in a segmentation violation while building PCL.
2065 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2066 many others over the years)
2067 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2068 the stack pointer (treated as a signed integer) is negative.
2069 (thanks to Peter van Eynde)
2071 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2072 * new platform: experimental support for the Windows operating
2073 system has been added. (thanks to Alastair Bridgewater)
2074 * fixed several bugs in and robustified the PPC FFI (including
2075 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2076 * bug fix: allow non-simple string symbol names (reported by Paul
2078 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2080 * bug fix: saving a core corrupted callbacks on x86/x86-64
2081 * bug fix: closed a loophole in metacircularity detection and
2082 grounding in the PCL implementation of CLOS.
2083 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2084 (reported by tomppa on #lisp)
2085 * bug fix: clear the direction flag on Lisp -> C transitions, as
2086 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2087 (reported by Andrej Grozin and Hendrik Maryns)
2088 * optimization: major improvements to GC efficiency on GENCGC platforms
2089 * optimization: faster implementation of EQUAL
2090 * optimization: emit more efficient opcodes for some common
2091 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2092 * optimization: several other minor code-generation improvements on x86-64
2093 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2095 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2096 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2097 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2098 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2099 by ANSI as a generic function, and for consistency (SETF
2100 GENERIC-FUNCTION-NAME) is treated likewise.
2101 * fixed bug #233.b: make constraint propagation notice when a variable
2102 value is changed after it is referenced but before it is used
2103 * fixed bug #296: no more arbitrary behaviour from filenames with
2104 odd characters as --load arguments. (reported by Adam Warner)
2105 * fixed bug #390: :CHARACTER-SET pathname components now work as
2106 expected. (reported by Tim Daly Jr)
2107 * fixed bug #391: complicated :TYPE intersections in slot
2108 definitions no longer cause an error in PCL internals.
2109 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2110 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2111 returning the number of octets which would be written to the
2112 file-stream. (thanks to Robert J. Macomber)
2113 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2114 arguments to the internal stream functions. (thanks to David
2116 * bug fix: stack exhaustion is now handled on the x86/SunOS
2117 platform. (thanks to Daisuke Homma)
2118 * bug fix: more accurate ROOM results on GENCGC platforms
2119 * optimization: improved type inference for arithmetic-for
2120 index variables in LOOP
2121 * optimization: faster floating-point SQRT on x86-64
2122 * fixed some bugs revealed by Paul Dietz' test suite:
2123 ** DOCUMENTATION returns NIL instead of "" for method combinations
2124 that don't have a docstring
2126 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2127 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2128 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2129 therefore are not customizeable by user code (as seems to be at
2130 least permitted and maybe required by AMOP). As a consolation,
2131 however, the SBCL implementation of these functions now calls
2132 REINITIALIZE-INSTANCE as specified by AMOP.
2133 * bug fix: slot-definition documentation is propagated as per ANSI
2134 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2135 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2136 argument, as do eslotd initialization methods. (from Pascal
2137 Costanza's "Closer" project)
2138 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2139 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2141 * bug fix: it is now possible to have more than one subclass of
2142 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2143 (reported by Bruno Haible, Pascal Costanza and others)
2144 * bug fix: the dependent update protocol now works for generic
2145 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2146 and Pascal Costanza)
2147 * bug fix: condition-class instances corresponding to
2148 DEFINE-CONDITION forms are now created eagerly. (reported by
2149 Kalle Olavi Niemitalo on comp.lang.lisp)
2150 * bug fix: floating point printing is more accurate in some
2151 circumstances. (thanks to Simon Alexander)
2152 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2153 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2154 * bug fix: callbacks on OS X now preserve stack-alignment.
2155 (thanks to Cyrus Harmon)
2156 * enhancement: the x86-64 disassembler is much better at
2157 disassembling SSE instructions. (thanks to Lutz Euler)
2158 * enhancement: CHECK-TYPE on a variable now allows type-inference
2159 (thanks to Vincent Arkesteijn)
2160 * optimization: improved performance of EUC-JP external format.
2161 (thanks to NIIMI Satoshi)
2162 * optimization: performance improvements to IO on file streams of
2163 :ELEMENT-TYPE CHARACTER
2164 * optimization: much faster memory allocation on x86-64
2165 * optimization: faster garbage collections (latency and throughput)
2167 * optimization: faster bignum subtraction and division on x86 and x86-64
2168 (thanks to Lutz Euler)
2169 * optimization: more accurate type-inference for loops that use a
2170 floating point index variable or a negative step.
2172 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2173 * bug fix: add a workaround to SBCL looping infinitely at startup on
2174 Linux kernels with apparently buggy implementations of personality().
2175 (thanks to Svein Ove Aas)
2176 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2177 (thanks to David Lichteblau)
2178 * bug fix: local bindings shadow global symbol macros for
2179 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2180 * optimization: non-open coded uses of numeric comparison operators
2181 (e.g. >) no longer cons when called with more than one parameter
2182 on platforms supporting dynamic-extent allocation.
2183 * enhancement: saving cores with foreign code loaded is now supported
2184 on MIPS/Linux in addition to the previously supported platforms.
2185 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2186 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2187 * bug fix: division by zero in sb-sprof when no samples were collected
2188 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2189 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2190 (thanks to Alexander Kjeldaas)
2191 * new feature: ignoring the return values of destructive functions
2192 like NREVERSE signals a compile-time style-warning.
2193 (thanks to Kevin Reid)
2194 * new feature: the alignment of alien structure fields can be
2195 explicitly specified. (thanks to Cyrus Harmon)
2196 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2197 and dump core on SIGQUIT
2199 ** incompatible change: threads do not inherit values of specials
2200 from their parents (see manual)
2201 ** bug fix: threads stacks belonging to dead threads are freed by the
2202 next exiting thread, no need to gc to collect thread stacks anymore
2203 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2204 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2205 ** bug fix: dynamic variable and thread start related gc lossage
2206 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2208 * fixed some bugs revealed by Paul Dietz' test suite:
2209 ** SUBTYPEP is slightly more accurate on heinously complicated
2210 CONS types where some of the members have uncertain (in the
2211 NIL, NIL sense) type relationships to each other.
2213 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2214 no longer purified unless :PURIFY T is explicitly specified.
2215 ** Non-purified cores are significantly smaller than before
2217 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2218 * new feature: timers based on Zach Beane's excellent timer package
2219 * added support for the following external formats: koi8-u,
2220 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2221 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2222 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2223 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2224 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2225 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2226 * incompatible change: a threaded SBCL will no longer revert to
2227 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2228 * bug fix: interrupts are disabled until startup is complete; no
2229 more sigsegvs when receiving a signal to soon
2230 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2232 * bug fix: add a workaround for the memory randomization features in
2233 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2234 workaround will only be in effect on systems with the proc filesystem
2236 * bug fix: printing objects of type HASH-TABLE signals a
2237 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2239 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2240 have been running for over 50 days. (reported by Gilbert Baumann)
2241 * bug fix: the logic for getting names of functions gets less
2242 confused when confronded with alternate-metaclass
2243 funcallable-instances. (reported by Cyrus Harmon)
2244 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2245 consistent, even on internal alternate-metaclass objects.
2246 * bug fix: flush closure information collected by physical
2247 environment analysis prepass before the main pass. (bug reported
2249 * bug fix: compiler pack phase does not modify a hashtable, which is
2250 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2251 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2252 may be expanded. (reported by Alexander <malishev> on c.l.l)
2253 * bug fix: no more style-warnings when compiling code using LAST
2254 under high-SPEED low-SPACE settings. (reported by David Wallin
2256 * fixed some incompatibilities between SBCL's MOP and the MOP
2258 ** the METAOBJECT class is now implemented;
2259 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2260 STANDARD-OBJECT, as required;
2261 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2262 now compatible (as required by VALIDATE-SUPERCLASS); there
2263 remains a consistency requirement over the presence or absence
2264 of the FUNCTION class in the superclass list of finalized
2265 classes; see the manual for more details;
2266 ** the :AROUND method for COMPUTE-SLOTS on
2267 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2268 requested slot ordering.
2270 ** bug fix: parent thread now can be gc'ed even with a live
2272 ** bug fix: binding a special with PROGV to no value is not
2273 the same as that symbol not having been bound (thanks to
2275 ** bug fix: binding specials is thread safe (thanks to
2277 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2278 and SB-SPROF do not die with 'no handler for signal XX in
2279 interrupt_handle_now(..)' anymore
2280 ** bug fix: WITH-TIMEOUT works with multiple running threads
2281 * fixed some bugs revealed by Paul Dietz' test suite:
2282 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2283 the :method-class keyword argument.
2285 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2286 * new port: the Solaris operating system on x86 processors is now
2287 mostly supported, though some rough edges in the environment
2288 remain. (thanks to Daisuke Homma)
2289 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2290 space for its heap. (thanks to Thiemo Seufer)
2291 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2292 closures. (thanks to Thiemo Seufer)
2293 * minor incompatible change: eof selects abort in the debugger.
2294 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2295 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2297 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2298 deprecated, and will go away in a future revision of SBCL.
2299 * minor incompatible change: GC-ON and GC-OFF are no longer
2300 implemented with a counter, it does not matter how many times gc
2301 is switched on or off
2302 * bug fix: discriminating functions for generic function classes
2303 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2304 make invalid assumptions about method precedence order. (reported
2306 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2307 platforms. (thanks to Thiemo Seufer)
2308 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2309 * bug fix: correct pathname printing with printer escaping is on.
2310 (thanks to Kevin Reid)
2311 * bug fix: complex VOP definitions in "user-space" no longer trigger
2312 package locks. (reported by Zach Beane)
2313 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2314 for funcallable-instance functions, and is no different from
2316 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2317 characters in the current readtable. (reported by Nicholas Neuss)
2318 * bug fix: SUBTYPEP on various CONS types returns more a more
2319 accurate acknowledgment of its certainty.
2320 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2321 lists in some cases. This partially fixes bug 384.
2322 * flush all standard streams before prompting in the REPL and the
2324 * bug fix: signal handling and triggering gc do not conflict
2325 directly anymore, in particular a high frequency sb-sprof does
2326 not prevent gc from running
2327 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2328 approximation for timezone and DST information between the
2329 universal time epoch and the smallest negative 32-bit time_t.
2330 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2331 year 1899 so long as the encoded time is non-negative.
2332 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2333 the correct answer for non-constant rotate amounts when performing
2334 an inline 32-bit rotation.
2336 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2337 there is only one thread in the session
2338 ** bug fix: memory leak for streams created in one thread and
2339 written to in another
2340 ** bug fix: lockup when compiled with gcc4
2341 ** bug fix: race that allows the gc to be triggered when gc is
2343 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2344 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2346 ** bug fix: finished threads are gc'ed properly
2347 * fixed some bugs revealed by Paul Dietz' test suite:
2348 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2349 has arguments with a different set of applicable methods from
2350 the orignal arguments.
2351 ** The type error thrown by MAP now has a correct expected-type
2353 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2354 name a compiled function.
2355 ** Three MISC tests where a large bignum was improperly coerced to
2356 a float that couldn't represent that bignum during type
2357 derivation were fixed.
2358 ** SUBTYPEP can now handle types involving the negation of a
2359 list-form FUNCTION type.
2360 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2361 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2362 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2364 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2365 * New feature: Experimental support for bivalent streams: streams
2366 opened with :element-type :default now allow character and binary
2367 (unsigned-byte 8) I/O
2368 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2369 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2371 * bug fix: no more highly sporadic "couldn't check whether ~S is
2372 readable" when reading a stream and an interrupt hits in the middle
2373 of a select system call
2374 * compiler better recognizes complex arrays (reported by Eduardo
2376 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2377 for variables on SBCL built with linkage-tables. (reported by Luis
2379 * various error reporting improvements.
2380 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2381 (Thanks to Thiemo Seufer)
2382 * bug fix: nested reader invokations work correctly
2383 * bug fix: it is possible to have simultaneous references to foreign
2384 code and foreign data with the same name.
2386 ** added x86-64 support
2387 ** incompatible change: the threading api now works with thread
2388 objects instead of thread ids
2389 ** bug fix: threads are protected from signals and interruption when
2390 starting up or going down
2391 ** bug fix: a race where an exiting thread could lose its stack to gc
2392 ** bug fix: don't halt on infinite error in threads if possible
2393 ** fixed numerous gc deadlocks introduced in the pthread merge
2394 ** bug fix: fixed thread safety issues in read and print
2395 ** bug fix: debugger doesn't hang on session lock if interrupted at
2396 an inappropriate moment
2397 ** bug fix: run-program is now thread safe(r)
2398 ** bug fix: inner with-recursive-lock no longer releases the mutex
2399 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2400 * fixed some bugs revealed by Paul Dietz' test suite:
2401 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2402 EXPECTED-TYPE slots filled.
2403 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2405 ** MAKE-CONDITION accepts classes as type-designators.
2406 ** COMPILE may never return NIL.
2407 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2408 range before calling Unix time functions
2410 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2411 * numerous signal handling fixes to increase stability
2412 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2413 * minor incompatible change: we now correctly canonize default
2414 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2415 as per the MOP, rather than the historical (INITARG INITFUNCTION
2416 INITFORM). (reported by Bruno Haible)
2417 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2418 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2419 for more information.
2420 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2421 pathname is a directory pathname.
2422 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2423 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2425 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2426 :METACLASS argument in addition to a class name. (reported by
2427 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2428 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2429 (reported by Bruno Haible; patch from Gerd Moellmann)
2430 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2432 * bug fix: more cleanups to the floating point exception handling on
2433 x86-64 (thanks to James Knight)
2434 * bug fix: the compiler does not try to constant fold calls of
2435 COERCE and BIT-* functions when they return freshly constructed
2436 objects. (reported by Nikodemus Siivola and Paul Dietz)
2437 * optimization: improved the MIPS versions of generic (in the
2438 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2439 * optimization: direct conversion of (unsigned-byte 32) to floats on
2440 the PowerPC platform.
2441 * optimization: structure instances with raw slots now use less
2442 memory, and probably show better memory locality. (thanks to
2444 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2445 are treated as requests for stack allocation on the x86-64,
2446 Alpha-32, PPC and SPARC platforms.
2447 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2448 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2449 (thanks to Tony Martinez)
2451 ** gcing a dead thread can no longer lead to lockups
2452 ** threads block signals until they are set up properly
2453 ** errno is no longer shared by threads
2454 ** interrupt-thread restores the eflags register on x86
2455 ** fixed some lockups due to gc/thread interaction
2456 * fixed some bugs revealed by Paul Dietz' test suite:
2457 ** invalid dotted lists no longer raise a read error when
2458 *READ-SUPPRESS* is T
2459 ** signal an error if a symbol that names a declaration is used
2460 as the name of a type, or vice versa
2461 ** allow using the (declare (typespec var*)) abbreviation for
2462 (declare (type typespec var*)) with all type specifiers
2463 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2464 ** always return NIL from PPRINT-POP when OBJECT is NIL
2465 ** don't signal errors when pretty-printing malformed LABELS,
2466 FLET or MACROLET forms
2467 ** declarations in a DOLIST body are also in scope for the
2469 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2471 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2474 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2475 * fixed cross-compiler leakages that prevented building a 32-bit
2476 target with a 64-bit host compiler.
2477 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2478 opened with :IF-EXISTS :OVERWRITE.
2479 * fixed bug 281: error for an invalid qualifier in a short-form method
2480 combination method is not signalled until the faulty method is called.
2481 * bug fix: iteration variable type inferrer failed to deal with open
2482 intervals. (reported by Alan Shields)
2483 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2484 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2485 or more runtime options were provided to the sbcl binary.
2486 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2487 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2488 * optimization: there's now a fast-path for fixnum arguments in the
2489 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2490 * optimization: the code generated on x86-64 is more compact thanks
2491 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2492 * bug fix: floating-point exception handling now partly works on
2493 x86-64. (Thanks to James Knight)
2494 * improvement to the MIPS backend from Thiemo Seufer: C-style
2495 64-bit long long arguments and return values to alien functions
2497 * fixed some bugs revealed by Paul Dietz' test suite:
2498 ** the type-error signalled from WARN has a filled-in DATUM slot.
2499 ** the type-error required when a stream is not associated with
2500 a file has the stream as its datum.
2501 ** type-errors on single-floats on x86-64 no longer have
2502 :INVALID-OBJECT as the datum
2503 ** the type-errors signalled for invalid function names now have
2504 a correct expected type
2505 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2506 for structures defined with a :TYPE. Documentation strings for
2507 typed structures are no longer immediately discarded
2508 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2509 broadcast streams and synonym streams. FILE-LENGTH now also works
2510 on broadcast streams.
2512 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2513 * incompatible change: the --noprogrammer option, deprecated since
2514 version 0.7.5, has been removed. Please use the equivalent
2515 --disable-debugger option instead.
2516 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2518 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2519 inoperational for a while now) has been completely removed.
2520 * null lexical environments are now printed as #<NULL-LEXENV>,
2521 significantly reducing the amount of clutter in typical backtraces.
2522 * documentation on weak pointers, finalization, and after GC hooks
2523 has been added to the manual.
2524 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2525 as other specialized array types, is much faster. SUBSEQ and
2526 COPY-SEQ on such arrays have also been sped up.
2527 * optimization: EQL is now more efficient when at least other argument
2528 is known to be of type (OR FIXNUM (NOT NUMBER)).
2529 * fixed bug: the runtime is now less vulnerable to changes in the
2530 size of the SBCL object on OS X, and virtual memory is reserved for
2531 all spaces that need to be at a fixed address.
2532 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2533 * fixed bug: finalizers and after GC hooks that cause consing are now
2535 * fixed bug: compiler error messages and summaries are now printed to
2536 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2537 * fixed inference of the upper bound of an iteration variable.
2538 (reported by Rajat Datta).
2539 * fixed bug 211e: calling local functions with duplicated constant
2540 keyword argument no longer causes a bogus style warning about an
2542 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2543 ftype declaration to be disregarded. (reported by Dave Roberts)
2544 * fixed bug 373: caused by erronous compilation of references to alien
2545 variables in the runtime on ppc/darwin.
2546 * fixed bug 376: CONJUGATE type deriver.
2547 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2548 (reported by Baughn on #lisp)
2549 * a cross-compiler bug on non-x86 platforms has been identified and
2550 fixed. (thanks to Bruno Haible)
2551 * improvements to the MIPS runtime code for increased stability.
2552 (thanks to Thiemo Seufer)
2553 * increased the maximimum compact environment size to allow
2554 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2555 * partial workaround for bug 135: don't name the function we're
2556 calling for hairy cases of EVAL, so as not to accumulate one environment
2557 entry per call to EVAL. (reported by Kevin Reid)
2558 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2559 * optimization: type testing for non-vector arrays should be faster.
2560 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2562 * bug fix: setting 31st element of a bit vector to zero did not work
2564 * bug fix: redefining a class definition which failed due to a
2565 previous accessor / function clash now works (but see BUGS entry
2566 #380 for more problems in this area). (thanks to Zach Beane)
2567 * the long form of DEFINE-METHOD-COMBINATION disables method group
2568 checking when given a single method group with pattern *. (thanks
2570 * on x86 compiler supports stack allocation of results of simple
2571 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2572 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2573 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2574 * fixed some bugs related to Unicode integration:
2575 ** the restarts for recovering from input and output encoding
2576 errors only appear when there is in fact such an error to
2578 * fixed some bugs revealed by Paul Dietz' test suite:
2579 ** MISC.549 and similar: late transformation of unsafe type
2580 assertions into derived types caused unexpected code
2582 ** SCALE-FLOAT type deriver is less wrong.
2583 ** type derivers for EXP, LOG and similar functions compute result
2584 types for complex arguments better.
2585 ** (MISC.563) CONJUGATE type deriver works for very restricted
2587 ** out-of-line type testers for character strings are available.
2588 ** EQUAL compiler transform understands specialness of objects
2590 ** accessing double-floats stored on the stack now works on x86-64.
2591 ** debugger internals could sometimes create invalid lispobjs,
2592 resulting in GC crashes.
2593 ** MISC.548: type check weakening can convert required type into
2595 ** initialization forms for bindings are not in scope of free special
2598 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2599 * incompatible change: thread support for non-NPTL systems has
2600 been removed - locking is buggy and unreliable. A threaded
2601 SBCL build will now warn at startup and refuse to create
2602 new threads, unless futex support is detected in the kernel
2603 * incompatible change: the top level REPL now has only an ABORT
2604 restart associated with it, not TOPLEVEL and ABORT as it used to.
2605 TOP and TOPLEVEL are now available as debugger commands for
2606 returning to the top level.
2607 * incompatible change: forms evaluated in the REPL now use the
2608 global optimization policy.
2609 * incompatible change: user- and system-initialization files are
2610 no longer processed with LOAD, but by READ and EVAL; hence the
2611 global optimization policy, startup package, readtable, etc,
2613 * The .fasl file format number has been incremented because of
2614 various incompatible changes.
2615 * internal entry point details and argument counts no longer appear
2616 in backtraces unless explicitly requested by setting
2617 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2618 * built-in and standard functions no longer have names like "top
2619 level local call to FOO".
2620 * fixed bug 32: functions defined in non-null lexical environments
2621 now have more legible printed representation
2622 * fixed bug 33: functions defined in non-null lexical environemnts
2623 are now more amenable to inspection by INSPECT.
2624 * workaround for bug 354: XEPs no longer appear in backtraces unless
2625 explicitly requested.
2626 * fixed bug: receiving the signal which results from attempting to
2627 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2628 SIGBUS on other *BSDs) on architectures where the C stack is also
2629 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2630 to debugger confusion or wild instability. (reported by Cheuksan
2632 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2633 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2634 (reported by Lutz Euler)
2635 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2636 compiled code. (reported by Paul Dietz)
2637 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2638 specialized parameter to a method to something that is not TYPEP
2639 the specializer is now possible.
2640 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2641 face of package deletion.
2642 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2643 pathname. (reported by David Tolpin on c.l.l)
2644 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2645 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2646 STRING-STREAM and FILE-STREAM, respectively.
2647 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2648 than previously; in addition, its test suite is now run on build.
2649 (thanks to Luke Gorrie)
2650 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2651 * optimization: added a immediate representation for single-floats
2653 * fixed some bugs revealed by Paul Dietz' test suite:
2654 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2655 ** attempting to create a package with a colliding nickname causes
2656 correctable errors to be signalled.
2657 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2658 ** several x86-64 backend bugs related to sign-extension of immediate
2661 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2662 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2663 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2665 * fixed loading of multiply forward-referenced layouts.
2666 (thanks to Cheuksan Wang)
2667 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2668 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2669 (see COMPILE-FILE documentation for details of :PRINT option)
2670 * fixed bugs 19 and 317: fixed-format floating point printing is
2671 more accurate. This also fixes a bug reported by Adam Warner
2672 related to the ~@F format directive.
2673 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2675 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2676 dispatch table if the from-char is a dispatch macro character.
2677 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2678 by the wordsize no longer ignore the last word. (reported by Lutz
2680 * fixed bug in type checking of dynamic-extent variables. (reported
2682 * optimization: sequence traversal functions use their freedom to
2683 coerce function designators to functions.
2684 * optimization: code with many calls to CLOS methods specialized on
2685 CLOS classes has had redundant type checks removed.
2686 * optimization: added declarations to speed up operations that access
2687 the internal character database (for example STRING-UPCASE)
2688 * optimization: comparison operations between floats and sufficiently small
2689 fixnums no longer create extra rationals
2690 * fixed some bugs related to Unicode integration:
2691 ** portions of multibyte characters at the end of buffers for
2692 character-based file input are correctly transferred to the
2693 start of the buffer at the next read.
2694 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2695 passing it through to OPEN.
2696 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2697 argument given to internal calls to OPEN.
2698 ** the built-in comment readers (introduced by character sequences
2699 ";" and "#|") are more forgiving to encoding errors; they will
2700 STYLE-WARN and then attempt to resync the stream at a character
2701 boundary. (thanks to Teemu Kalvas)
2702 * fixed some bugs in the x86-64 port:
2703 ** Negative short int return values from c-calls are sign-extended
2705 ** The stack is aligned to 16-bytes for c-calls, as required by
2706 the ABI. (thanks to Cheuksan Wang)
2707 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2708 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2709 for enums. (thanks to Vincent Arkesteijn)
2710 ** Multiple small optimizations and bugfixes for floating point
2712 * fixed some bugs revealed by Paul Dietz' test suite:
2713 ** Space, Tab, Linefeed, Return and Page have the invalid
2714 secondary constituent character trait.
2715 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2717 ** WITH-INPUT-FROM-STRING should only update the index place on
2719 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2720 works more reliably.
2721 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2722 with one-dimensional arrays with fill pointers.
2723 ** TYPE-OF failed on a complex with an integer realpart and a
2725 ** compiler failure during type inference for the code of form
2726 (IF (EQL X (THE ...)) ...) (MISC.535).
2728 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2729 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2730 platform. The port supports 61-bit fixnums, large memory spaces
2731 and reloading shared object files.
2732 * enhancement: saving cores with foreign code loaded is now
2733 supported on ppc/Darwin in addition to the previously supported
2735 * enhancement: the statistical profiler now walks deeper into the
2736 call stack for more meaningful call-graphs and accrued time
2737 reports (x86/x86-64 only). It also now reports time spent in
2739 * enhancement: it is now possible to trace most individual methods
2740 of a generic function in addition to tracing the generic function
2742 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2744 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2745 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2746 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2747 produces an error. (thanks to Vincent Arkesteijn)
2748 * bug fix: NAMESTRING on pathnames with :WILD components in their
2749 directories works correctly. (thanks to Artem V. Andreev)
2750 * fixed bug 125: compiler preserves identity of closures. (reported
2752 * bug fixed: functions with &REST arguments sometimes failed with
2753 "Undefined function" when compiled with (DEBUG 3). (reported by
2755 * bug fix: overflow during compiling of setting element of a bit
2756 vector with constant index and value. (reported by Timmy Douglas)
2757 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2758 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2759 * on x86 compiler partially supports stack allocation of dynamic-extent
2761 * GO and RETURN-FROM do not check the extent of their exit points
2762 when compiled with SAFETY 0.
2763 * fixed some bugs related to Unicode integration:
2764 ** encoding and decoding errors are now much more robustly
2765 handled; it should now be possible to recover even from invalid
2766 input or output to the terminal. (thanks to Teemu Kalvas)
2767 ** provided a first cut at implementing STRING-TO-OCTETS and
2768 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2769 ** altered the SB-MD5 contributed module slightly, changing the
2770 interface just enough for it to be supportable for builds where
2771 lisp characters are not eight bits.
2772 * fixed some bugs revealed by Paul Dietz' test suite:
2773 ** the FORMATTER-generated functions for ~V[ conditionals require
2774 the correct number of arguments.
2775 ** READ-FROM-STRING returns the mandated second value when applied
2776 to displaced strings.
2777 ** the #\Rubout and #\Backspace characters are treated as invalid
2778 constituent characters by the tokenizer.
2780 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2781 * new feature: reloading changed shared object files with
2782 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2783 * new feature: references to foreign variables and functions
2784 can now be compiled and loaded before the corresponding shared
2785 object file is loaded, as long as the foreign definitions are
2786 available at runtime.
2787 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2788 supported. (thanks to Dan Debertin)
2789 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2790 just keywords. (thanks to Vincent Arkesteijn)
2791 * fixed bug #331: structure-class instances corresponding to
2792 DEFSTRUCT forms are now created eagerly.
2793 * fixed bug #345: backtraces from calls to undefined functions work
2794 on x86 as well. Related bug #61 is now also partially fixed on x86
2795 (backtraces from throws to unknown catch tags.)
2796 * bug fix: lambda-list parsing is now stricter vrt. order and number
2797 of lambda-list keywords.
2798 * bug fix: as specified by AMOP, an error is signalled if a
2799 class-option appears multiple times in a DEFCLASS form. (reported
2801 * bug fix: RANDOM can be compiled when the compiler derives the type
2802 of its numeric argument as a disjoint set of small integers.
2803 (reported by Paul Dietz)
2804 * bug fix: starting a core saved with shared objects loaded when
2805 those objects are not available no longer causes threaded SBCL to
2806 hang. (reported by Sean Ross)
2807 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2809 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2810 argument, which must always be NIL. (reported by Kalle Niemitalo)
2811 * bug fix: printing 1.0d+23 no longer results in an error.
2812 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2813 * bug fix: structure slot setters preserve evaluation order. (thanks
2815 * fixed some bugs related to Unicode integration:
2816 ** RUN-PROGRAM can allow its child to take input from a Lisp
2817 stream. (reported by Stefan Scholl)
2818 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2819 locales. (reported by Ken Causey)
2820 * fixed some bugs revealed by Paul Dietz' test suite:
2821 ** INCF, DECF and REMF evaluate their place form as specified in
2823 ** FORMATTER expands ~{ ~} iteration directives with V or #
2824 parameters correctly.
2825 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2826 consequent uses no arguments correctly.
2827 ** the system has a partial understanding of the (COMPLEX RATIO)
2829 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2832 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2833 * new feature: a build-time option (controlled by the :SB-UNICODE
2834 keyword feature, enabled by default) for building the system with
2835 support for the entire 21-bit character space defined by the
2837 * new feature: the system now has rudimentary external-format
2838 support; the primary user-visible change at this time is that
2839 characters with the high bit set (such as lower-case-e-acute) will
2840 print correctly to a terminal in a UTF-8 environment.
2841 * minor incompatible change: BASE-CHAR no longer names a class;
2842 however, CHARACTER continues to do so, as required by ANSI.
2843 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2844 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2845 has been moved to the SB-EXT package (temporarily re-exported from
2847 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2848 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2850 * fixed bug #351: better error-handlind and reporting for malformed
2852 * fixed bug #350: bignum-printing is now more memory-efficient,
2853 allowing printing of very large bignums, eg. (expt 2 10000000).
2854 (reported by Bruno Haible)
2855 * fixed bug #302: better primitive-type selection for intersection
2857 * fixed bug #308: non-graphic characters now all have names, as
2858 required. (reported by Bruno Haible)
2859 * bug fix: redefining a class with different superclasses now correctly
2860 removes it from the direct-subclasses of its previous superclasses.
2861 (reported by David Morse)
2862 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2863 new value now works. (reported by Bruno Haible)
2864 * bug fix: correct canonicalization of multiple non-standard slot
2865 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2866 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2867 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2868 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2869 now exists, an signals an error.
2870 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2871 during macroexpansion for non-iteration variables as well. (reported
2872 by Bruno Haible for CMUCL)
2873 * bug fix: Cyclic structures and unprintable objects in compiler
2874 messages no longer cause errors. (reported by Bruno Haible)
2875 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2876 and READ-FROM-STRING all now return a primary value of NIL if
2877 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2878 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2879 (reported by Bruno Haible for CMUCL)
2880 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2881 do not designate a condition. (reported by Bruno Haible for
2883 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2884 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2885 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2886 permitting resolution in favour of any of the conflicting symbols.
2887 (reported by Bruno Haible for CMUCL)
2888 * bug fix: EQUAL compiler optimizations is less aggressive on
2889 strings which can potentially compare true despite having distinct
2890 specialized array element types.
2891 * bug fix: unit enumerations can be defined without dividing by
2892 zero. (thanks to Vincent Arkesteijn)
2893 * FORMAT compile-time argument count checking has been enhanced.
2894 (report from Bruno Haible for CMUCL)
2895 * a partial workaround for the bug 262: the compiler does not try to
2896 inline-expand a local function doing RETURN-FROM from a deleted
2897 BLOCK. (thanks to Peter Denno for the bug report and to David
2898 Wragg for the simple test case)
2899 * fixed some bugs revealed by Paul Dietz' test suite:
2900 ** RENAME-PACKAGE allows all package designators as new package
2902 ** constraint propagation and lambda variable substitution are
2903 more cautious in dealing with partially deleted code.
2904 ** compiler sometimes lost reoptimization passes.
2905 ** CERROR, given a condition as condition designator, passes its
2906 remaining arguments to the continue format control without
2908 ** Case-altering FORMAT directives work correctly on non-ASCII
2910 ** The REAL type specifier handles bounds outside the floating
2911 point ranges without signalling FLOATING-POINT-OVERFLOW.
2912 ** Functions with IR1-transformations can create intercomponent
2913 references to global functions.
2914 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2916 ** FORMAT ~R treats a nil value for its first parameter correctly.
2918 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2919 * enhancement: saving cores with foreign code loaded is now
2920 supported on x86/NetBSD and sparc/Linux in addition to the previously
2921 supported platforms.
2922 * bug fix: on some platforms repeated installations caused multiple
2923 copies of HTML documentation to be installed -- should not happen
2924 any more. (reported by Stefan Scholl)
2925 * bug fix: parsing self-recursive alien record types multiple times
2926 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2927 original patch by Helmut Eller for CMUCL)
2928 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2929 (thanks to Richard Kreuter)
2930 * bug fix: defining classes whose accessors are methods on existing
2931 generic functions in other (locked) packages no longer signals
2932 bogus package lock violations. (reported by François-René Rideau)
2933 * bug fix: special variables as DEFMETHOD parameters no longer have
2934 associated bogus type declarations. (reported by David Wragg and
2936 * bug fix: read-write consistency on streams of element-type
2937 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2938 * bug fix: redefiniton of the only method of a generic function with
2939 no DEFGENERIC no longer emits a full WARNING. In addition,
2940 redefinition of generic functions with no DEFGENERIC to an
2941 incompatible lambda list now signals an error. (thanks to Zach
2943 * bug fix: DEFGENERIC now works even when there's a function of the
2944 same name in an enclosing lexical environment. (thanks to Zach
2946 * fixed compiler failure, caused by instrumenting code during
2947 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2948 * optimization: added loop analysis and improved register allocation
2949 * fixed some bugs revealed by Paul Dietz' test suite:
2950 ** POSITION on displaced vectors with non-zero displacement
2951 returns the right answer.
2952 ** (SIMPLE-STRING) is a valid type specifier for sequence
2954 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2956 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2957 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2959 ** The justification version of the FORMAT ~< directive treats
2960 non-zero minpad parameter correctly.
2962 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2963 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2964 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2965 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2966 the supported interface.
2967 * new feature: Single-stepping of code compiled with DEBUG 2 or
2968 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2969 * new feature: saving cores with foreign code loaded is now
2970 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2971 Timothy Moore's work for CMUCL)
2972 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2973 parameters to * instead of NIL if no initform is supplied.
2974 (reported by Johan Bockgaard)
2975 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2976 correctly when FUNCALL appears as the car of the form. Note:
2977 despite this FUNCALL forms are not currently subject to
2978 compiler-macro expansion. (port of Raymond Toy's fix for the
2979 same from CMUCL, reported by Johan Bockgaard)
2980 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2981 (thanks for Teemu Kalvas)
2982 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2983 case instead of terminating the iteration (thanks for Julian
2984 Squires, Sean Champ and Raymond Toy)
2985 * bug fix: incorrect expansion of defgeneric that caused a style
2986 warning. (thanks for Zach Beane)
2987 * bug fix: slot accessor effective method computation works properly
2988 for classes with multiple non-standard applicable methods on
2989 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2990 * on x86 compiler supports stack allocation of results of LIST and
2991 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2992 CMUCL implementation by Gerd Moellmann)
2993 * fixed some bugs revealed by Paul Dietz' test suite:
2994 ** FORMAT strings with both the ~<~:;~> form of the justification
2995 directive and pretty-printing directives cause an error.
2997 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2998 * incompatible change: the internal functions
2999 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3000 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3001 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3002 instead of the old functions.
3003 * new feature: on platforms where "dladdr" is available foreign
3004 function names now appear in backtraces. (based on Helmut Eller's
3006 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3007 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3009 * documentation: ASDF manual is now distributed with SBCL.
3010 * bug fix: SBCL can now load its contributed modules with REQUIRE
3011 even if the system-provided entries have been removed from
3012 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3014 * bug fix: backtraces involving undefined functions or assembly
3015 routines are more informative. (thanks to Brian Downing)
3016 * bug fix: mutually referent alien structures now work correctly.
3017 (reported by Rick Taube)
3018 * bug fix: structures defined by WITH-ALIEN can be referred to
3019 within other definitions in the same WITH-ALIEN.
3020 * bug fix: division operators (MOD, TRUNCATE and the like) with
3021 constant zero divisors and integer dividends no longer generate
3023 * bug fix: provide default methods for INPUT-STREAM-P and
3024 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3025 * bug fix: improve the detection and resolution of MOP metacycles
3026 (where effective method computation depends on the generic function
3027 having its effective method computed). (reported by Bruno Haible)
3028 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3029 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3030 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3031 * bug fix: pathnames with relative directory components can be
3032 represented relative to default pathnames.
3033 * optimization: in taking the GCD of bignums, reduce the two bignums
3034 to approximately the same size (using Euclid's algorithm) before
3035 applying the more sophisticated binary GCD. (thanks to Juho
3037 * optimization: COUNT on bitvectors now operates word-at-a-time.
3038 * optimization: ASH with a positive, but not necessarily constant,
3039 (leftwards) shift, when in a modular context, is compiled to a
3041 * fixed some bugs revealed by Paul Dietz' test suite:
3042 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3043 if the corresponding argument is NIL.
3044 ** FORMAT directives accepting a minpad parameter treat negative
3046 ** literal commas as character parameters to FORMAT directives are
3048 ** literal spaces directly after ~<Newline> directives within a
3049 format-logical-block (~:< ~@:>) do not induce :FILL-style
3050 conditional newlines.
3051 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3052 as specified: it no longer includes conditional newlines).
3053 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3055 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3056 :PER-LINE-PREFIX argument does not evaluate to a string.
3058 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3059 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3060 the manual for details; for now, package locks can be disabled by
3061 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3062 if no major problems are found then it is likely that they will be
3063 compiled in unconditionally.
3064 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3065 unsupported operators on all platforms. To load a shared library
3066 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3067 object file, link it into a shared library outside of SBCL and
3068 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3070 * bug workaround: ROOM T and the GC were not working together
3071 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3072 reporting facility aren't preserved. That reporting has been
3073 disabled, so now until and unless someone figures out how to make it
3074 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3075 * minor incompatible change: as threatened around sbcl-0.8.0, the
3076 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3077 The symbols are also exported from SB-PCL for backwards
3078 compatibility, but more so than before SB-PCL should be treated as
3079 an implementation-internal package.
3080 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3082 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3083 It is known as of this release not to work on the Alpha, however.
3084 * fixed bug #167: errors signalled due to illegal syntax in method
3085 bodies are now more legible.
3086 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3087 designators and can hence be used with TYPEP.
3088 * fixed bug #333: CHECK-TYPE now ensures that the type error
3089 signalled, if any, has the right object to be accessed by
3090 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3091 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3092 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3094 * fixed bug #334: programmatic addition of slots using specialized
3095 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3096 and :ALLOCATION :CLASS slots.
3097 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3098 float exponents. (rereported by Peter Seibel)
3099 * fixed a bug: #\Space (and other whitespace characters) are no
3100 longer considered to be macro characters in standard syntax by
3101 GET-MACRO-CHARACTER.
3102 * fixed bug: initialization of condition class metaobjects no longer
3103 causes an instance of the condition to be created. (reported by
3105 * fixed bug: it is now possible to have slots such that
3106 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3107 description is neither :INSTANCE nor :CLASS.
3108 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3109 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3110 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3111 non-standard SLOT-DEFINITION-ALLOCATION values.
3112 * fixed bugs: various race conditions handling exiting threads.
3113 CL-PPCRE's thread torture test now passes.
3114 * fixed arguably-a-bug: GC time proportional to number of threads in
3115 system even when most of them are idle
3116 * optimization: improved performance of BIT and SBIT on bit-vectors.
3117 * .fasl file incompatibility: The fasl file version number has
3118 been incremented because of changes associated with package locks.
3120 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3121 * minor incompatible change: the system no longer provides
3122 optimization hints (conditions which are TYPEP
3123 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3124 mode; these hints are still emitted when higher SPEED optimization
3126 * new contrib module: a sampling profiler (profiling by statistical
3127 sampling, rather than by instrumenting functions) is available as
3128 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3129 * the behaviour of the standard function ED is now customizeable by
3130 third parties through a hook variable: see ED's documentation
3131 string for information on the protocol.
3132 * the compiler no longer emits efficiency notes for (FUNCALL X)
3133 when the type of X is uncertain under default optimization
3135 * fixed bug 276: mutating a binding of a specialized parameter to a
3136 method to something that is not TYPEP the specializer is now
3138 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3139 exhibit the required behaviour on the x86 platform. (thanks to
3140 Peter van Eynde, Eric Marsden and Bruno Haible)
3141 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3142 even for difficult arguments. (reported by Peter Graves)
3143 * fixed bug 141a: the backquote printer now descends quoted
3145 * fixed another bug in backquote printing: no more destructive
3146 modification of the form's list structure. (reported by Brian
3148 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3149 move between its address being taken and the call to
3150 interrupt_thread, fixing a crashing race condition.
3151 * the SB-POSIX contrib implementation has been adjusted so that it
3152 no longer exhibits ridiculously poor performance when constructing
3153 instances corresponding to C structs.
3155 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3156 * minor incompatible change: the sb-grovel contrib now treats C
3157 structures as alien (in the sense of SB-ALIEN) objects rather than
3158 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3159 has implications for memory management of client code
3160 (sb-grovel-returned objects must now be manually managed) and for
3161 type safety (alien objects now have full types).
3162 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3163 used to control emission of compiler diagnostics, rather than the
3164 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3165 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3166 quality should be considered deprecated.
3167 * install.sh now installs the user manual as well
3168 * (not quite a new documentable feature, but worth considering in
3169 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3170 beginnings of a semantically meaningful condition hierarchy is
3171 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3173 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3174 designator as the defaults argument.
3175 * fixed bug: Displaced arrays whose displaced-to array has become
3176 too small now cause ARRAY-DIMENSION to signal an error, providing
3177 for safer bounds-checking. (reported by Bruno Haible)
3178 * fixed bug: DEFCLASS slot definitions with identical :READER and
3179 :WRITER names now signal a reasonable error. (reported by Thomas
3181 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3183 * fixed bug: Invalid slot specification errors now print correctly.
3184 (thanks to Zach Beane)
3185 * fixed bug 320: Shared to local slot value transfers in class
3186 redefinitions now happen corrently from superclasses as
3187 well. (reported by Bruno Haible)
3188 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3190 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3191 improper lists correctly. (reported by Bruno Haible)
3192 * fixed bug 313: source-transform for <fun-name> was erroneously
3193 applied to a call of a value of a variable with name <fun-name>.
3194 (reported by Antonio Menezes Leitao)
3195 * fixed bug 307: The obsolete instance protocol ensures that
3196 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3197 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3198 remove dead unknown-values globs from the middle of the stack.
3199 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3200 easier to resume long computations after using *BREAK-ON-SIGNALS*
3201 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3202 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3203 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3204 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3205 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3206 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3208 * fixed a (fairly theoretical) bug in string printing: if
3209 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3210 does not have array-element-type equal to the most general string
3212 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3213 function name. (thanks to Nikodemus Siivola)
3214 * fixed bug: compile-time format string checker failed on
3215 non-closed ~{. (reported by Thomas F Burdick)
3216 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3217 don't warn on legal loop code involving more than one aggregate
3218 boolean. (thanks to Nikodemus Siivola)
3219 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3220 in keyword position to MAKE-PACKAGE was not being reported as
3222 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3223 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3225 * fixed bugs 280 and 312: the checking for multiple definitions in a
3226 file is less likely to become confused by uses of inline
3228 * fixed bug: the #S reader macro performs the keyword coercion
3229 specified for slot names. (reported by Kalle Niemitalo)
3230 * fixed bug: lambda lists may contain symbols whose names start with
3231 & but are not lambda-list-keywords; their occurrence triggers a
3233 * fixed bug 321: define-method-combination argument lambda lists do
3234 not cause invalid code to be generated when &optional or &aux
3235 variables have default values. (reported by Bruno Haible)
3236 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3237 have CLOS classes; this appears also to have fixed reported
3238 instability in stack exhaustion detection.
3239 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3240 MUFFLE-WARNING when no associated restart is present is now
3242 * optimization: rearranged the expansion of various defining macros
3243 so that each expands into only one top-level form in a
3244 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3246 * optimization: used a previously little-used slot in symbols to
3247 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3249 * fixed some bugs revealed by Paul Dietz' test suite:
3250 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3252 ** Fixed an optimization bug related to inheritance of initforms
3253 from local to shared slots.
3254 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3255 ** CAST optimizer forgot to flush argument derived type.
3256 ** print/read consistency on floats is now orders of magnitude
3257 more likely. (thanks also to Bruno Haible for a similar report
3259 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3260 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3261 for objects of type REAL. Make it so.
3262 ** SXHASH is specified (infelicitously) to respect similarity,
3263 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3264 it so. (thanks to Markus Ziegler)
3265 ** on the Alpha, the compiler succeeds in compiling functions
3266 returning a known number of arguments greater than 63.
3267 ** fixed handling of invalid NIL arguments in keyword position
3269 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3271 ** provided a readably-printable representation for RANDOM-STATE
3273 ** ensured that pathnames, where they have a namestring, always
3274 print using #P"..." syntax.
3276 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3277 * Support for the forthcoming 2.0 version of the NetBSD kernel
3278 running on x86 hardware has been added. (thanks to Perry
3279 E. Metzger most immediately, and others for their past work)
3280 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3281 current release version; SBCL's OpenBSD support had been broken
3282 since about the time of OpenBSD's switch to ELF binary format.)
3283 * [placeholder for DX summary]
3284 ** user code with &REST lists declared dynamic-extent, under high
3285 speed or space and low safety and debug optimization policy.
3286 * The manual has been converted to Texinfo format and the debugger
3287 chapter from the cmucl manual has been added.
3288 * A facility has been added to extract documentation strings from
3289 sbcl and store them as Texinfo-formatted snippets for inclusion in
3290 the manual (via Texinfo's @include directive)
3291 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3292 the test case to Dave Roberts)
3293 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3294 pointers. (reported by Sean Ross)
3295 * bug fix: PROFILE output is printed nicely even for large numerical
3296 values. (thanks to Zach Beane)
3297 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3298 greater than 32 handle EOF correctly.
3299 * bug fix: on X86 an immediate argument of the IMUL instruction is
3300 correctly printed in disassembly. (thanks to Lutz Euler)
3301 * bug fix: class slots in redefined classes preserve their old
3302 values. (thanks to Bruno Haible and Nikodemus Siivola)
3303 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3304 succeeds. (reported by Marco Baringer)
3305 * fixed some bugs revealed by Paul Dietz' test suite:
3306 ** READ-SEQUENCE now works on ECHO-STREAMs.
3307 ** RATIONALIZE works more according to its specification. (thanks
3310 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3311 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3312 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3313 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3314 should matter to you only if you rebind the printer control
3315 variables and then find you want different bindings in the
3316 debugger than in the ordinary execution of your program.)
3317 * The runtime build system has been tweaked to support building
3318 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3319 assembler and linker. (thanks to Nikodemus Siivola)
3320 * Unbound, undefined, undeclared variables now trigger full
3321 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3322 more often programmer error than deliberate exploitation of undefined
3324 * optimization: the hash algorithm for strings has changed to one
3325 that is less vulnerable to spurious collisions. (thanks to Juho
3327 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3328 needless bounds checking. (thanks to Juho Snellman)
3329 * optimization: implemented multiplication as a modular
3330 (UNSIGNED-BYTE 32) operation on the PPC backend.
3331 * fixed some bugs revealed by Paul Dietz' test suite:
3332 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3334 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3335 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3336 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3338 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3340 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3342 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3343 their output stream on EOF from read.
3344 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3345 have been read to end-of-file.
3346 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3348 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3349 description of determination of which consecutive characters
3351 ** Printing the "Space" character with escaping on now yields "#\\ ",
3352 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3353 ** Reading floating-point numbers with *READ-BASE* set to a number
3354 less than 10 works correctly.
3355 ** Reading floating-point numbers with *READ-BASE* set to a number
3356 more than 10 works correctly.
3357 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3358 the readtable currently in effect.
3360 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3361 * minor incompatible change: parsing of namestrings on a physical
3362 (Unix) host has changed; numbers after the final #\. in a
3363 namestring are no longer interpreted as a version field. This is
3364 intented to be largely invisible to the user, except that the
3365 meaning of the namestring "*.*.*" has changed: it now refers to a
3366 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3367 should usually be replaced by
3368 (make-pathname :name :wild :type :wild :version :wild)
3369 with the added benefit that this is more likely to be portable.
3370 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3371 option to OPEN now signals an error if the file being opened
3372 exists; this may have an impact on existing code.
3373 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3374 signals received, on the PowerPC platforms (both Linux and
3375 Darwin). (thanks to Pierre Mai for pointing out the location of
3377 * several fixes on OS X: The system now builds and runs cleanly on
3378 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3379 (thanks to Brian Mastenbrook)
3380 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3381 second-resolution: integer multiples of 1/3600 between -24 and 24.
3382 (thanks to Vincent Arkesteijn)
3383 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3384 type when called with 1 argument; PEEK-CHAR checked type of
3385 PEEK-TYPE only after having read first character from a
3386 stream. (reported by Peter Graves)
3387 * bug fix: the garbage collector now has much better locality
3388 behaviour, and in particular no longer treats all memory as being
3389 exhausted when many small objects point to each other in a deeply
3391 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3392 recognized as being TYPEP their class.
3393 * bug fix: the PUSHNEW documentation string has been corrected.
3394 (thanks to Vincent Arkesteijn)
3395 * bug fix: defaulting of the value for the last of an atypically
3396 large number of multiple values being bound was not being
3397 performed correctly on the Alpha or PPC platforms
3398 * optimization: implemented multiplication as a modular
3399 (UNSIGNED-BYTE 32) operation on the x86 backend.
3400 * optimization: SEARCH on simple-base-strings can now be open-coded.
3401 (see also contrib/compiler-extras.lisp for inspiration for
3402 teaching the compiler about the Boyer-Moore algorithm).
3403 * value, returned by MAX (and MIN) called with several EQUALP, but
3404 not EQL, arguments now does not depend on compiler settings.
3405 * fixed some bugs revealed by Paul Dietz' test suite:
3406 ** in stack analysis liveness information is propagated from
3407 non-local entry points.
3408 ** pathwise CAST removing failed when the CAST node did not start
3410 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3411 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3413 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3414 host is already defined.
3415 ** RENAME-FILE works on streams instead of signalling an internal
3417 ** PEEK-CHAR uses the current readtable when determining whether
3418 or not a character is whitespace.
3419 ** MERGE-PATHNAMES handles the case when the pathname does not
3420 specify a name while the default-pathname specifies a version.
3421 ** Pathnames now stand a better chance of respecting print/read
3423 ** Attempting to use standardized file system operators with a
3424 pathname with invalid :DIRECTORY components signals a
3426 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3428 ** DIRECTORY on logical pathnames is more correct.
3429 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3430 signal a TYPE-ERROR if their argument is not a stream.
3431 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3432 designator argument does not designate a stream.
3433 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3434 examining the synonym.
3435 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3437 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3438 element-type larger than ([UN]SIGNED-BYTE 32).
3440 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3441 * When built with the :SB-FUTEX feature, threaded builds now take
3442 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3443 for faster/more reliable mutex and condition variable support.
3444 * Incompatible change (but one you probably shouldn't have been using
3445 anyway): the interface and code for arbitrating between multiple
3446 threads in the same user session has been redesigned.
3447 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3448 error when called without an explicit environment argument.
3449 (thanks to Nikodemus Siivola)
3450 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3451 confused about their position. (thanks to Adam Warner and Gerd
3453 * bug fix: Pretty printing backquoted forms with unquotations in the
3454 argument list position of various code constructs such as LAMBDA
3455 now works correctly. (reported by Paul Dietz)
3456 * bug fix: Pretty printing unquotations no longer loses all
3457 stream position information.
3458 * optimization: performance of string output streams is now less
3459 poor for multiple small sequence writes.
3460 * optimization: performance of CSUBTYPEP in the presence of complex
3461 expressions involving CONS and NOT many times has been improved.
3462 (reported by Paul Dietz)
3463 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3465 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3466 streams for the REPL, for the debugger, and so on. (thanks to
3468 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3469 * fixed some bugs revealed by Paul Dietz' test suite:
3470 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3471 is ignored if it is too small, rather than propagating through
3472 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3473 ** extremely complex negations of CONS types were not being
3474 sufficiently canonicalized, leading to inconsistencies in
3476 ** VALUES tranformer lost derived type.
3478 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3479 * fixed a bootstrapping bug: the build process no longer assumes
3480 that the various BOOLE-related constants have the same value in
3481 host and target lisps. (noted by Paul Dietz' test suite on an
3482 SBCL binary built from CLISP)
3483 * The system can now be dynamically linked on the MIPS platform,
3484 which enables dynamic loading of foreign code from Lisp. (thanks
3485 to Ralf Baechle for discussions on the MIPS ABI)
3486 * The system now records debugging information for its own source
3487 files in a filesystem-position-independent manner, relative to
3488 the "SYS" logical host.
3489 * fixed a compiler bug: MV-LET convertion did not check references
3490 to the "max args" entry point. (reported by Brian Downing)
3491 * tweaked disassembly notes to be less confident about proclaiming
3492 some instruction as an LRA. (thanks to Brian Downing)
3493 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3494 now each have their own history, command character, and other
3495 characteristics. (thanks to David Lichteblau)
3496 * fixed some bugs revealed by Paul Dietz' test suite:
3497 ** compiler failure in compiling LOGAND expressions including a
3499 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3500 shift greater than 32.
3501 ** FLUSH-DEST did not mark blocks for type check regeneration.
3502 ** HANDLER-CASE failed to accept declarations in handler clauses
3503 in some circumstances.
3505 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3506 * New code in contrib/sb-introspect (still probably not entirely
3507 stable yet) provides some support for smart Lisp development
3508 environments like SLIME.
3509 * The conditions signalled for errors occurring when loading .fasl
3510 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3511 in a way which should help ASDF recover gracefully.
3512 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3513 stuff has been cleaned up. If you code contrib/ stuff, this might
3514 affect you, and you can look at contrib/README, contrib/STANDARDS,
3515 and/or the 0.8.4.27 diff to check.
3516 * In full calls the compiler now does not generate checks for declared
3517 argument types for all arguments.
3518 * various threading fixes
3519 ** and some experimental patches which didn't make it into
3520 the main tree for this release, but which are shipped in
3521 contrib/experimental-thread.patch as a possible fix for some
3522 failures (deadlock, spinning...) in GC-intensive multithreaded
3524 * fixed PPC build problem (source code incompatibility of different
3525 library versions): added offsetof() hackery which attempts to divine
3526 where glibc maintainers put uc_mcontext today
3527 * fixed bug 282: compiler does not trust type assertions while passing
3528 arguments to a full call.
3529 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3530 &OPTIONAL VALUES type parameter.
3531 * fix bug 214: algorithm for noting rejected templates is now more
3532 similar to that of template seletion. (also reported by rydis on
3534 * fixed bug 141b: printing backquoted information readably and prettily
3535 inserts a space where necessary.
3536 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3537 (CHARACTER 10) are now reported as errors, rather than propagated
3538 as unknown types. (reported by piso on #lisp)
3539 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3540 with values NIL and :ERROR. (thanks to Milan Zamazal)
3541 * fixed bug 191c: CLOS now does proper keyword argument checking as
3542 described in CLHS 7.6.5 and 7.6.5.1.
3543 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3544 longer raise an error; further, using a list as a for-as-arithmetic
3545 counter now raises a meaningful error.
3546 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3547 now understood by sequence creation functions such as MAKE-SEQUENCE
3549 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3550 a STRING-INPUT-STREAM.
3551 * compiler enhancement: SIGNUM is now better able to derive the type
3553 * type declarations inside WITH-SLOTS are checked. (reported by
3555 * fixed some bugs revealed by Paul Dietz' test suite:
3556 ** incorrect optimization of TRUNCATE for a positive first
3557 argument and negative second.
3558 ** compiler failure in let-convertion during flushing dead code.
3559 ** compiler failure while deriving type of TRUNCATE on an
3560 interval, containing 0.
3561 ** ASH of a negative bignum by a negative bignum count now returns
3563 ** intersection of CONS types now canonicalizes properly, fixing
3564 inconsistencies in SUBTYPEP.
3566 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3567 * incompatible change: The --disable-debugger command line
3568 option now clobbers the debugger at a more fundamental
3569 level, by redefining #'INVOKE-DEBUGGER instead of by
3570 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3571 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3572 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3573 enter the debugger REPL and then suffer recursive errors
3574 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3575 while under the new system, BREAK in --disable-debugger mode
3576 terminates the system just as an unhandled error would.
3577 * fixed compiler performance when processing loops with a step >1;
3578 * bug fix: DOCUMENTATION now retrieves generic function
3579 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3580 support has been systematized, and now supports the methods
3581 specified by ANSI, along with a default method and a method for
3582 slot documentation. (reported by Nathan Froyd)
3583 * bug fix: effective methods associated with a generic function are
3584 no longer cached over a change of that generic function's method
3585 combination. (reported by Andreas Fuchs)
3586 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3587 names a non-existent directory. (thanks to Andreas Fuchs)
3588 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3589 the PPC platform, lead to stack corruption; this has been fixed.
3590 (reported by Rainer Joswig)
3591 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3592 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3593 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3594 arithmetic in general, is now much more reliable on the PPC
3596 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3597 platform now returns the right answer.
3598 * optimization: restored some effective method precomputation in
3599 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3600 precomputation is now tunable.
3601 * optimization: compiler-internal data structure use has been
3602 reviewed, and changes have been made that should improve the
3603 performance of the compiler by about 20%.
3604 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3605 simple-base-strings and simple-bit-vectors is improved.
3606 * optimization: the optimization of 32-bit logical and arithmetic
3607 functions introduced in version 0.8.3 on the x86 has been
3608 implemented on the mips, ppc and sparc platforms; an
3609 implementation of the same facility, but for 64-bit arithmetic,
3610 has been added for the alpha.
3611 * microoptimization: the compiler is better able to make use of the
3612 x86 LEA instruction for multiplication by constants.
3613 * bug fix: in some situations compiler did not report usage of
3614 generic arithmetic in (SPEED 3) policy.
3615 * bug 145b fix: compiler used wrong type specifier while converting
3616 MEMBER-types to numeric.
3617 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3619 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3620 index argument now works properly on the Alpha platform.
3621 * bug fix: floating point exception treatment on the Alpha platform
3623 * bug fix: FILE-POSITION works much better on string input and
3624 output streams. (thanks to Nikodemus Siivola)
3625 * bug fix: many threading/garbage collection symptoms sorted.
3626 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3627 might be pseudo-atomic.
3628 * internal change: Stopping for GC is now done with signals not
3629 ptrace. GC is now done in whichever thread wanted it, instead of
3631 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3633 * bug fix: result form in DO is not contained in the implicit
3635 * incompatible change: ICR structure is changed; the value part of
3636 CONTINUATION is now called LVAR; corresponding functions are
3637 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3638 * added type deriver for ISQRT (thanks to Robert E. Brown).
3639 * bug fix: better support for loading from the command line when an
3640 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3642 * fixed some bugs revealed by Paul Dietz' test suite:
3643 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3644 ** ROUND and FROUND now give the right answer when given very
3645 small float arguments.
3646 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3648 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3649 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3650 ** LCM should return a non-negative integer.
3651 ** PARSE-INTEGER returned the index of a terminator instead of the
3652 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3653 ** PARSE-INTEGER returned an incorrect index being applied to a
3655 ** LCM with two arguments of 0 returns 0 rather than signalling
3657 ** unsigned addition of a 32-bit constant with the high bit set no
3658 longer causes an internal compiler error on the x86.
3659 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3660 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3661 with negative last argument.
3662 ** byte specifiers with zero size and position no longer cause
3663 an error during type derivation.
3664 ** bignum multiplication on the Alpha platform now returns the
3666 * porting: The system now builds on SuSE AMD64, although it still
3667 generates a 32-bit binary.
3668 * .fasl file incompatibility: The fasl file version number has
3669 been incremented (because of the changes to internal compiler
3670 data structures referred to above).
3672 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3673 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3674 more accurately, on the Darwin kernel running on PowerPC hardware.
3675 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3676 * Compiler code deletion notes now signal a condition of type
3677 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3678 an associated MUFFLE-WARNING restart.
3679 * The compiler now performs limited argument count validation of
3680 constant format strings in FORMAT, and where appropriate in ERROR,
3681 CERROR and WARN. (thanks to Gerd Moellmann)
3682 * New ASDF-INSTALL contrib can be used for automatic download and
3683 installation of third-party Lisp code from CCLAN or other sites
3685 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3686 which forces another thread to execute a function supplied by the
3688 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3689 now accept and act upon their :ELEMENT-TYPE keyword argument.
3690 (reported by Martin Atzmueller, Edi Weitz)
3691 * bug fix: FILE-POSITION now accepts position designators up to
3692 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3693 is the greater. (thanks to Patrik Nordebo)
3694 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3695 Kalle Olavi Niemitalo)
3696 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3697 printable. (reported by Eric Marsden)
3698 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3699 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3700 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3701 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3702 (thanks to Stig Sandoe)
3703 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3704 UNREAD-CHAR now correctly includes the unread character in the
3705 target sequence. (thanks to Gerd Moellmann)
3706 * bug fix in threaded builds: the system can now be suspended and
3707 resumed by shell job control with minimal disruption.
3708 * bug fixes in times and timezones >2038AD
3709 * better handling of "where is GNU make?" problem in build scripts
3710 (thanks to Nikodemus Siivola)
3711 * new optimization: inside a named function any reference to a
3712 function with the same name is considered to be a self-reference;
3713 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3714 optimization quality.
3715 * new optimization on x86: logical functions and + now have
3716 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3717 used when the result is truncated to 32 bits.
3718 * VALUES declaration is partially enabled.
3719 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3720 * fixed some bugs revealed by Paul Dietz' test suite:
3721 ** The system now obeys the constraint imposed by
3722 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3723 types form a lattice under type intersection.
3724 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3725 ** ASSOC now ignores NIL elements in an alist.
3726 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3727 and (1+ MOST-POSITIVE-FIXNUM) answers.
3728 ** The addition of a method with invalid qualifiers to a generic
3729 function does not cause an error to be signalled immediately;
3730 a warning is signalled, and the error is generated only on
3731 calling the generic function.
3732 * changed .fasl file version number, in part to add type codes for
3733 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3734 obscure ANSI requirements
3736 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3737 * fixed bug 148: failure to inline-expand a local function left
3738 garbage, confusing the compiler.
3739 * fixed bugs 3cd: structure slot readers perform type check if the
3740 slot can have an invalid value (i.e. it is either not initialized
3741 or can be written with a less specific slot writer).
3742 * bug fix: the compiler now traps array references to elements off
3743 the end of an array; previously, the bounds checking in some
3744 circumstances could go off-by-one.
3745 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3747 * type declarations for array element types now obey the description
3748 on the CLHS page "Declaration TYPE", as per discussions on
3749 sbcl-help around 2003-05-08. This means that a declaration
3750 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3751 declaration, all references to BAR will be asserted or assumed
3752 (with THE, so dependent on compiler policy) to involve objects of
3753 type FOO. Note that no such declaration is implied in
3754 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3755 * declared types of functions from the "Conditions"
3756 chapter. (reported by Paul Dietz)
3757 * bug fix: CERROR accepts a function as its first argument.
3758 * bug fix: NTH an NTHCDR accept a bignum as index
3759 arguments. (reported by Adam Warner)
3760 * optimization: character compare routines now optimize comparing
3761 against a constant character. (reported by Gilbert Baumann)
3762 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3763 argument now works properly on the MIPS platform.
3764 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3765 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3766 declared to have a functional type, does not cause an error
3768 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3769 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3770 * fixed bug: if last continuation of a deleted block has a
3771 destination, this destination should be deleted too. (reported by
3773 * fixed a bug in the bootstrap process: the host compiler's values
3774 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3775 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3776 test case from Patrik Nordebo)
3777 * improved the ability of the disassembler on the PPC platform to
3778 provide helpful disassembly notes.
3779 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3780 the class in more cases than previously.
3781 * bug fix: FILE-POSITION now understands :START and :END for
3782 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3783 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3784 8) data. (thanks to David Lichteblau)
3785 * bug fix: it is possible to add a method to a generic function
3786 without lambda list.
3787 * bug fix: reader failed to signal END-OF-FILE inside an
3788 object representation. (reported by Nikodemus Siivola)
3789 * fixed some bugs revealed by Paul Dietz' test suite:
3790 ** LAST and [N]BUTLAST should accept a bignum.
3791 ** condition slot accessors are methods.
3792 ** (VECTOR NIL) is a subtype of STRING.
3794 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3795 * minor incompatible change: some nonsensical specialized lambda
3796 lists (used in DEFMETHOD) which were previously ignored now signal
3798 * minor incompatible change: the system is now aware of the types of
3799 variables in the COMMON-LISP package, and will signal errors for
3800 most violations of these type constraints (where previously they
3801 were silently accepted).
3802 * minor incompatible change: COMPILE-FILE now uses the freedom
3803 afforded (ANSI 3.2.2.3) to use derived function types for
3804 functions defined in the same file. This also permits the system
3805 to warn on static type mismatches and function
3806 redefinition. (Currently it does not work with high DEBUG level.)
3807 * minor incompatible change: VALUES declaration is disabled.
3808 * When issuing notes, the compiler now signals a condition of type
3809 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3810 restart for use in user handlers. It is expected that the
3811 COMPILER-NOTE condition will eventually become a condition
3812 supertype to a hierarchy of note types, which will then be
3813 handleable in a similar fashion. However, at the moment, no such
3814 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3815 but it's an implementation detail, not a classification for the
3817 * Changes in type checking closed the following bugs:
3818 ** type checking of unused values (192b, 194d, 203);
3819 ** template selection based on unsafe type assertions (192c, 236);
3820 ** type checking in branches (194bc).
3821 * A short form of VALUES type specifier has ANSI meaning (it has
3822 increased the number of situations when SBCL cannot perform type
3824 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3825 keywords or constants is permissible.
3826 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3827 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3828 classes. (thanks to Antonio Martinez)
3829 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3830 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3831 argument to a pretty-print stream. Instead, it leaves any such
3832 operations to DESCRIBE-OBJECT methods.
3833 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3835 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3836 lambda lists. (thanks to David Lichteblau)
3837 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3838 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3839 (thanks to Gerd Moellmann)
3840 * fixed bug 246: increased compilation speed of long
3841 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3843 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3845 * DEFCONSTANT now throws a condition of type
3846 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3847 constant to a non-EQL value; CONTINUE and ABORT restarts
3848 respectively change and preserve the value.
3849 * fixed bug 63: The code walker, part of the implementation of CLOS,
3850 is now better at handling symbol macros.
3851 * bug fix: There is no longer an internal implementation type named
3852 CL:LENGTH. (reported by Raymond Toy)
3853 * bug fix: In macro-like defining macros/special operators the
3854 implicit block does not enclose the lambda list.
3855 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3856 enclosed in parentheses) are not suitable as type specifiers, and
3857 their use properly signals an error now.
3858 * bug fix: An argument count mismatch for a type specifier in code
3859 being compiled no longer causes an unhandled error at compile
3860 time, but signals a compile-time warning.
3861 * fixed simple vector readable printing
3862 * bug fix: DESCRIBE takes more care over whether the class
3863 precedence list slot of a class is bound before accessing it.
3864 (reported by Markus Krummenacker)
3865 * bug fix: FORMATTER can successfully compile pretty-printer format
3866 strings which use variants of the ~* directive inside.
3867 * bug fix: SEARCH now applies its TEST predicate to the elements of
3868 the arguments in the correct order. (thanks to Wolfhard Buss)
3869 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3870 in type inference. (thanks to Robert E. Brown)
3871 * bug fix: Reading in symbols with an explicit package name of ""
3872 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3873 * fixed some bugs revealed by Paul Dietz' test suite:
3874 ** NIL is now allowed as a structure slot name.
3875 ** Arbitrary numbers, not just REALs, are allowed in certain
3876 circumstances in LOOP for-as-arithmetic clauses.
3877 ** Multiple class redefinitions before slot access no longer
3878 causes a type error.
3879 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3880 association between the name and a class.
3881 ** Generic functions with non-standard method-combination and over
3882 five methods all of which return constants no longer return NIL
3883 after the first few invocations. (thanks to Gerd Moellmann)
3884 ** CALL-NEXT-METHOD with no arguments now passes the original
3885 values of the arguments, even in the presence of assignment.
3886 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3888 ** DISASSEMBLE works with closures and funcallable instances.
3889 ** ADD-METHOD now returns the generic function, not the new method.
3890 ** FIND-METHOD signals an error if the lengths of the specializers
3891 is incompatible with the generic function, even if the ERRORP
3893 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3894 which its argument is a member.
3895 ** DEFCLASS only redefines the class named by its class-name
3896 argument if that name is the proper name of the class;
3897 otherwise, it creates a new class.
3898 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3899 of the UNBOUND-SLOT condition to the name of the slot.
3900 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3901 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3902 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3903 SLOT-MAKUNBOUND in the specified fashion.
3905 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3906 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3907 cross-compilation host. As a consequence, we can now bootstrap our
3908 way up to SBCL starting with a bare gcc toolchain and human-readable
3909 source code (first the source to CLISP, then the source to SBCL).
3910 * A contributed module containing a partial implementation of the
3911 simple-streams interface has been included. (thanks to Rudi
3913 * A contributed module implementing the RFC1321 Message Digest
3914 Algorithm, known as MD5, has been included.
3915 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3916 no longer has any effect, as the code controlled by this feature
3917 has been deleted. (As far as we know, no-one has ever built using
3918 this feature, and its semantics were confused in any case).
3919 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3920 work on conditions (as required by the ANSI specification),
3921 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3922 expected behaviour on conditions. Users should note, however,
3923 that such behaviour is not required by the ANSI specification,
3924 and so use of this behaviour may render their code unportable.
3925 * fixed some bugs revealed by Paul Dietz' test suite:
3926 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3928 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3929 ** SXHASH on condition objects no longer returns NIL.
3930 ** :ALLOCATION :CLASS slots are better treated; their values are
3931 updated on class redefinition, and initforms inherited from
3932 superclasses are applied.
3933 ** REMOVE-METHOD returns its generic function argument even when
3934 no method was removed.
3935 ** SHARED-INITIALIZE now initializes the values of the requested
3936 slots, including those with :ALLOCATION :CLASS.
3937 ** ALLOCATE-INSTANCE now works on structure classes defined via
3938 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3940 ** SLOT-EXISTS-P now works on conditions, as well as structures
3942 ** MAKE-LOAD-FORM now has the required methods on
3943 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3944 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3945 keyword, and now implements the SLOT-NAMES argument.
3946 ** methods with &OPTIONAL arguments no longer allow too many
3947 arguments to be passed in the call without error.
3948 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3949 option is consistent with the required arguments of the generic
3950 function lambda list.
3951 * bug fix: REQUIRE accepts a string designator. (Thanks to
3953 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3954 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3955 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3956 * bug fix: The compiler now checks for duplicated variables in macro
3958 * bug fix: SETQ on globals returns the correct value.
3959 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3960 not a COMPILER-ERROR (followed by some other strange error on
3961 choosing the CONTINUE restart).
3962 * bug fix: make.sh and friends are now more consistent in the way that
3963 they look for GNU "make".
3965 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3966 * experimental native threads support (on x86 Linux >=2.4 only).
3967 This is not compiled in by default: you need to add :SB-THREAD to
3968 the target features. See the "Beyond ANSI" chapter of the manual
3970 * fix for longstanding nonANSIism: The old distinction between
3971 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3972 The return value from CL:FIND-CLASS is now a CLOS class, and
3973 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3974 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3975 * An interface to the MetaObject Protocol, as described in Kiczales,
3976 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3977 MIT Press, 1991, is available from the SB-MOP package.
3978 * incompatible change: the SB-PCL package should now be considered
3979 a private implementation detail, and no longer a semi-private MOP
3981 * minor incompatible change: due to rearrangement for threads, the
3982 control stack and binding stack are now allocated at arbitrary
3983 addresses instead of being hardcoded per-port. Users affected by
3984 this probably have to be doing advanced things with shared
3985 libraries, and will know who they are.
3986 * minor incompatible change: Previously, all --eval forms used were
3987 processed with READ before any of them were processed with EVAL.
3988 Now each --eval form is processed with both READ and EVAL before
3989 the next --eval form is processed. (Thus package operations like
3990 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3991 work as the user might reasonably expect.)
3992 * minor incompatible change: *STANDARD-INPUT* is now only an
3993 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3995 * minor incompatible change: Y-OR-N-P is now character-oriented,
3996 not line oriented. Also, YES-OR-NO-P now works without errors.
3997 (thanks to Antonio Martinez)
3998 * sb-aclrepl module improvements: an integrated inspector, added
3999 repl features, and a bug fix to :trace command.
4000 * Known functions, which cannot be open coded by the backend, are
4001 considered to be able to check types of their arguments. (fixing
4002 a bug report by Nathan J. Froyd)
4003 * fixed a bug in computing method discriminating functions: It is
4004 now possible to define methods specialized on classes which have
4005 forward-referenced superclasses. (thanks to Gerd Moellmann)
4006 * fixed evaluation order in optional entries (reported by Gilbert
4008 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4009 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4010 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4011 required-by-AMOP NAME argument, as well as CLASS and
4012 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4013 * fixed bug 20: DEFMETHOD can define methods using names that are
4014 not the proper names of classes to designate class specializers.
4015 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4016 Unix file descriptors, instead of blowing up. (thanks to Antonio
4018 * Garbage collection refactoring: user-visible change is that a
4019 call to the GC function during WITHOUT-GCING will not do garbage
4020 collection until the end of the WITHOUT-GCING. If you were doing
4021 this you were probably losing anyway.
4022 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4023 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4024 TYPEP the latter but not the former.
4025 * The compiler issues a full WARNING for calls to undefined functions
4026 with names from the CL package.
4027 * MAP-INTO for a vector destination is open coded. (reported by
4028 Brian Downing on c.l.l)
4029 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4030 documentation string.
4031 * fixed some bugs revealed by Paul Dietz' test suite:
4032 ** COPY-ALIST now signals an error if its argument is a dotted
4034 ** Condition slots are now accessed more correctly in the presence
4035 of multiple initargs for a given slot.
4036 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4037 exclude restarts of the same name associated with a different
4039 ** DEFCLASS of forward-referenced classes with another
4040 forward-referenced class in the superclasses list no longer
4042 ** Condition slots are now initialized once each, not multiple
4043 times. (thanks to Gerd Moellmann)
4044 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4046 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4047 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4048 arguments contain duplicated elements.
4049 ** RESTART-CASE understands local macros.
4050 ** RESTART-CASE associates exactly its own restarts with a condition.
4051 ** ENDP in safe mode checks its argument to be of type LIST.
4052 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4053 in question is unbound.
4054 ** Optimized MAKE-INSTANCE functions no longer cause internal
4055 assertion failures in the presence of duplicate initargs.
4056 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4057 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4058 propagated even in the ctor optimized implementation of
4060 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4062 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4063 * a better implementation of SXHASH on (simple) bit vectors,
4064 measured both in execution speed and in distribution of results
4065 over the positive fixnums, has been installed. Likewise, a better
4066 implementation of EQUAL for simple bit vectors is now available.
4067 * fixed CEILING optimization for a divisor of form 2^k.
4068 * fixed bug 240 (emitting extra style warnings "using the lexical
4069 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4070 by Antonio Martinez)
4071 * fixed SXHASH, giving different results for NIL depending on type
4072 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4073 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4074 variable. (found by Rolf Wester)
4075 * SBCL does not ignore type declarations for special
4076 variables. (reported by rif on c.l.l 2003-03-05)
4077 * some bug fixes in contrib/sb-aclrepl/
4078 * fixed some bugs revealed by Paul Dietz' test suite:
4079 ** a bug in the CONS type specifier, whereby the CAR and CDR
4080 types got intertwined, has been fixed;
4081 ** the type system is now able to reason about the interaction
4082 between INTEGER and RATIO types more completely;
4083 ** APPEND, [N]REVERSE and NRECONC check that those their
4084 arguments, which must be proper lists, are really so;
4085 ** An array specialized to be unable to hold elements has been
4086 implemented, as required -- yes, really -- by ANSI;
4087 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4088 on malformed property lists;
4090 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4091 * incompatible packaging change: in line with Unix convention,
4092 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4093 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4094 * REQUIRE and PROVIDE are now optionally capable of doing something
4095 useful. See the documentation string for REQUIRE.
4096 * infrastructure for a managed SBCL contrib system: contributed
4097 modules in this release include:
4098 ** the ASDF system definition facility;
4099 ** an interface to the BSD Sockets API;
4100 ** an ACL-like convenience interface to the repl;
4101 (thanks to Kevin Rosenberg)
4102 ** an implementation of ROTATE-BYTE, with efficient implementation
4104 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4105 gives a closer approximation to the right answer than previously.
4106 (thanks to Raymond Toy)
4107 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4108 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4109 optional environment arguments, as required by ANSI.
4110 * fixed bugs in other functions taking environment objects, allowing
4111 calls with an explicit NIL environment argument to be compiled
4113 * fixed bug 228: primary return values from
4114 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4115 COMPILE or FUNCTION.
4116 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4117 :TYPE will no longer signal errors on innocuous objects.
4118 * fixed bug 231b: SETQ is better at respecting type declarations in
4119 the lexical environment.
4120 * fixed a bug in DEFCLASS: classes named by symbols with no or
4121 unprintable packages can now be defined.
4122 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4123 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4124 * fixed compiler failure related to checking types of functions.
4125 (reported by Robert E. Brown)
4126 * the compiler is now much more consistent in its error-checking
4127 treatment of bounding index arguments to sequence functions: in
4128 (SAFETY 3) code, errors will be signalled in almost all cases if
4129 invalid sequence bounding indices are passed to functions defined
4130 by ANSI to operate on sequences.
4131 * fixed a bug in the build procedure: documentation of SBCL-specific
4132 packages is now preserved and available in the final Lisp image.
4133 * lifted FDEFINITION lookup out of loops in the implementation of
4134 many list operations. (thanks to Robert E. Brown)
4135 * fixed a bug in the reader: the #n# reader macro now works for
4136 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4137 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4138 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4139 E. Brown and Tony Martinez respectively)
4140 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4141 SLOT-BOUNDP: in particular, it is now able to optimize them much
4142 better, and is now not vulnerable to having packages renamed.
4143 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4144 always called when a slot is not present in an instance. (thanks
4146 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4147 longer signal an error on unreading a character following EOF on
4148 the previous constituent stream. (thanks to Tony Martinez)
4149 * fixed some bugs revealed by Paul Dietz' test suite:
4150 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4151 not just nonnegative fixnums;
4152 ** the logical bit-array operators such as BIT-AND now accept an
4153 explicit NIL for their "opt-arg" argument (to indicate a
4154 freshly-consed result bit-array);
4155 ** ELT now signals an error on an invalid sequence index in safe
4157 ** the type system is now cleverer about negations of numeric
4158 types, and consequently understands the BIGNUM and RATIO types
4160 ** the type system is now cleverer about the interaction between
4161 INTEGER and RATIO types: while bugs still remain, many more
4162 cases are accurately computed;
4163 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4164 if it is in the last clause;
4165 ** CONSTANTLY now correctly returns a side-effect-free function in
4167 ** DECLARE is no longer treated as a special-operator; in
4168 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4169 * incremented fasl file version number due to the change in the
4170 DEFSTRUCT-SLOT-DESCRIPTION structure.
4172 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4173 * minor incompatible change: code processed by the "interpreter" or
4174 EVAL now has a compilation optimization policy of (DEBUG 2)
4175 (changed from (DEBUG 1)) to improve debuggability of interactive
4176 development, and to allow the use of the debug RETURN command in
4178 * an experimental implementation of the RETURN command for the
4179 debugger has been included. (thanks to Frederik Kuivinen)
4180 * fixed bug 62: constraints were not propagated into a loop.
4181 * fixed bug in embedded calls of SORT (reported and investigated by
4183 * fixed some bugs revealed by Paul Dietz' test suite:
4184 ** printing and reading of arrays with some dimensions having
4185 length 0 (thanks to Gerd Moellmann);
4186 ** BOA constructor with &AUX argument without a default value does
4187 not cause a type error;
4188 ** CONSTANTP now returns true for all self-evaluating objects.
4190 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4191 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4192 accessors that are related by inheritance, as specified in the
4193 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4194 Valtteri Vuorikoski)
4195 * The compiler is now able to inline functions that were defined in
4196 a complex lexical environment (e.g. inside a MACROLET).
4197 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4199 * Support for the upcoming FreeBSD-5.0 release has been included.
4200 (thanks to Dag-Erling Smorgrav)
4201 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4202 effect when it is not in a toplevel context.
4203 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4204 stand a better chance of being correct. (thanks to Gerd
4206 * fixed bug in COERCE, which now signals an error on coercing a
4207 rational to a bounded real type which excludes the expected
4209 * The compiler is now able to derive types more accurately from the
4210 COERCE and COMPILE functions.
4211 * fixed bug 223: functional binding is considered to be constant
4212 only for symbols in the CL package.
4213 * fixed bug 231: SETQ did not check the type of a variable being set
4214 (reported by Robert E. Brown)
4215 * A new optimization for MAKE-INSTANCE has been included, fixing
4216 various bugs (including relating to :ALLOCATION :CLASS slots and
4217 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4219 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4220 ** As required by ANSI, LOOP now disallows anonymous collection
4221 clauses such as COLLECT I in conjunction with aggregate boolean
4222 clauses such as THEREIS (= I 1);
4223 ** LOOP now signals an error when any variable is reused in the
4224 same loop (including the potentially useful construct analogous
4225 to WITH A = 1 WITH A = (1+ A);
4226 ** IT is only a special loop symbol within the first clause of a
4227 conditional loop clause;
4228 ** LOOP with a typed iteration variable over a hashtable now
4229 signals a type error iff it should.
4230 * fixed some other bugs revealed by Paul Dietz' test suite:
4231 ** FILE-STREAM now names the class previously known as FD-STREAM;
4232 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4233 argument) no longer signals an error;
4234 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4235 of the slot symbol, rather than using the current package
4236 ((:CONC-NAME "") continues to intern the slot's name in the
4238 * incremented fasl file version number, because of the incompatible
4239 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4240 of the new implementation of DEFINE-COMPILER-MACRO.
4242 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4243 * Support for building SBCL for MIPS platforms running in
4244 little-endian mode has now been checked in, and basic
4245 functionality on said platforms verified.
4246 * minor incompatible change: PCL now records the pathname of a file
4247 in which methods and the like are defined, rather than its
4249 * minor incompatible change: TRUENAME now considers the truename of
4250 a file naming a directory to be the pathname with :DIRECTORY
4251 component indicating that directory.
4252 * minor incompatible change: a NAMED clause in the extended form of
4253 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4254 reason for the previous behaviour is unclear.
4255 * more systematization and improvement of CLOS and MOP conformance
4256 in PCL (thanks to Gerd Moellman and Pierre Mai):
4257 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4259 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4260 primary methods with no specializers;
4261 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4263 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4264 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4265 FORWARD-REFERENCED-CLASSes; error reporting on
4266 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4268 ** SXHASH on CLOS instances now uses a slot internal to the
4269 instance to return different numbers on distinct instances,
4270 while preserving the same return value through invocations of
4272 ** DEFMETHOD signals errors when methods with longer incongruent
4273 lambda lists are added to generic functions;
4274 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4275 CLASS, as specified in AMOP;
4276 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4277 on the order returned by the primary method for classes of
4278 class STANDARD-CLASS;
4279 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4280 * fixed some bugs shown by Paul Dietz' test suite:
4281 ** DOLIST puts its body in TAGBODY;
4282 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4284 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4285 value producing form;
4286 ** if more variables are given to PROGV than values, extra
4287 variables are bound and made to have no value;
4288 ** NSUBSTITUTE on list arguments gets the right answer with
4290 ** ELT signals an error of type TYPE-ERROR when the index argument
4291 is not a valid sequence index;
4292 ** LOOP signals (at macroexpansion time) an error of type
4293 PROGRAM-ERROR when duplicate variable names are found;
4294 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4295 ** FUNCALL of special-operators now cause an error of type
4297 ** PSETQ now works as required in the presence of side-effecting
4298 symbol-macro places;
4299 ** NCONC accepts any object as its last argument;
4300 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4302 ** loop-for-as-package does not require a package to be explicitely
4304 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4306 * fixed bug 166: compiler preserves "there is a way to go"
4307 invariant when deleting code.
4308 * fixed bug 172: macro lambda lists with required arguments after
4309 &REST arguments now cause an error to be signalled. (thanks to
4311 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4312 bug. (thanks to Matthew Danish)
4313 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4315 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4316 arguments are lexically rebound. (thanks to Gerd Moellmann and
4318 * fixed bug 194: error messages are now more informative when there
4319 is no primary method applicable in a call to a generic
4320 function. (thanks to Gerd Moellmann)
4321 * fixed bug in command line argument checking (thanks to Julian
4323 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4324 (thanks to Matthew Danish)
4325 * incremented fasl file version number, because of the
4326 SXHASH-related changes in the layout of CLOS data structures
4328 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4329 * minor incompatible change: The runtime (the Unix executable named
4330 "sbcl") is now much pickier about the .core files it will load.
4331 Essentially it now requires .core files to descend from the same
4332 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4333 as the runtime does. (The intent is to prevent the crashes which
4334 can occur, and which can even be reported as mysterious failures,
4335 when people patch the sources or change the build parameters
4336 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4337 sbcl and .core files.)
4338 * fixed bug: VALUES-LIST is no longer optimized away.
4339 * fixed bug 142: The FFI conversion of C string values to Lisp
4340 string values no longer conses excessively. (thanks to Nathan
4341 Froyd porting Raymond Toy's fix to CMU CL)
4342 * began to systematize and improve MOP conformance in PCL (thanks to
4343 Nathan Froyd, Gerd Moellman and Pierre Mai):
4344 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4346 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4347 ** FINALIZE-INHERITANCE is now called on class finalization;
4348 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4349 argument precedence order.
4350 * fixed bug 202: The compiler no longer fails on functions whose
4351 derived types contradict their declared type.
4352 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4353 so it can be non-toplevel.
4354 * The fasl file version number has changed (because of the new
4355 implementation of DEFMACRO).
4356 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4357 safe code, that any length requirement by their type-specifier
4358 argument is valid. The exceptions to this are described in bug
4360 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4361 functions now check the types of their inputs as required by ANSI.
4362 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4363 introduced symbol is DECLAREd to be SPECIAL.
4364 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4365 * fixed bug: :COUNT argument to sequence functions may be negative
4366 * fixed bug: body of DO-SYMBOLS may contain declarations
4367 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4368 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4369 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4370 symbol macro only once
4371 * fixed printing of call frame when argument list is unavailable
4372 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4373 * compiler no longer signals WARNING on unknown keyword
4376 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4377 * A beta-quality port to the mips architecture running Linux,
4378 based on the old CMUCL backend, has been made. It has been tested
4379 on a big-endian kernel, and works sufficiently well to be able to
4380 rebuild itself; it has not been tested in little-endian mode.
4381 * fixed an inconsistency between gencgc.c and purify.c which made
4382 dumping/loading .core files unreliable
4383 * fixed bug 120a: The compiler now deals correctly with IFs where
4384 the consequent is the same as the alternative, instead of
4385 misderiving the return type. (thanks to Alexey Dejneka)
4386 * fixed bug 113: Logical pathnames are now dumpable (the logical
4387 host is resolved at load-time, throwing an error if it is not
4389 * fixed bug 174: FORMAT's error message is slightly clearer when a
4390 non-printing character is used in a format directive.
4391 * fixed several bugs in compiler checking of type declarations, i.e.
4392 violations of the Python "declarations are assertions" principle
4393 (thanks to Alexey Dejneka)
4394 * fixed several bugs in PCL's error checking (thanks to Gerd
4396 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4398 * fixed bug in compilation of functions as first class values
4399 (thanks to Antonio Martinez-Shotton)
4400 * The compiler's handling TYPE-ERRORs which it can prove will
4401 inevitably happen at runtime has been cleaned up and corrected
4402 in several ways. (thanks to Alexey Dejneka)
4403 * improved argument type checking for various basic arithmetic
4404 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4405 lavished on them in the past that they can be compiled in many
4406 ways in different special cases
4407 * fixed bug 181: compiler checks validity of user supplied type
4409 * cleaned up code flushing in optimization: Function calls which
4410 should signal errors for safety purposes (e.g. which ANSI says
4411 should signal errors when their arguments are of incorrect type)
4412 are no longer optimized away.
4413 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4414 * incremented fasl file version number, because changes in the
4415 implementation of sequence functions like COERCE caused
4416 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4417 in old inline expansions) to become undefined. (Actually these
4418 changes were later undone, so we might very well be binary
4419 compatible with 0.7.7 after all, but leaving the version number
4420 incremented seemed like the simplest and most conservative
4423 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4424 * An alpha-quality port to the parisc architecture running Linux,
4425 based on the old CMUCL backend, has been made. This, even more so
4426 than the other backends, should be considered still a work in
4427 progress; known problems include that the Linux kernel in 64-bit
4428 mode does not propagate the correct sigcontext structure to
4429 userspace, and consequently SBCL on a parisc64 kernel will not
4431 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4432 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4433 suppressed.) Also now that the compiler is looking at declarations
4434 in the environment, it checks optimization declarations as well,
4435 and suppresses inlining when (> DEBUG SPEED).
4436 * More fixes have been made to treatment of floating point exception
4437 treatment and other Unix signals. In particular, floating point
4438 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4439 * The detection and handling of control stack exhaustion (infinite
4440 or very deeply nested recursion) has changed. Stack exhaustion
4441 detection is now done by write-protecting pages at the OS level
4442 and applies at all optimization settings; when found, a
4443 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4444 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4445 be caught using IGNORE-ERRORS.
4446 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4447 correctly when transforming recursive LABELS functions to LETs.
4448 (thanks to Alexey Dejneka)
4449 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4450 that are names of constants or global variables.
4451 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4452 alien routines with docstrings.
4453 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4454 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4456 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4457 (thanks to Eric Marsden)
4458 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4459 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4460 * Bug fix: The SPARC backend can now compile functions involving
4461 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4462 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4463 to a functions expecting a PATHNAME-DESIGNATOR.
4464 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4465 lambda lists. (thanks to Alexey Dejneka)
4466 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4467 functions so that EXPORTing the name of the class doesn't cause
4468 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4469 to Antonio Martinez for reporting this)
4470 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4471 constant-folded without failing an assertion. (thanks to Einar
4472 Floystad Dorum for reporting this)
4473 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4474 types are now dealt with more correctly by the compiler.
4475 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4476 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4477 behaviour analogous to RENAME-FILE. This puts its behaviour more
4478 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4480 * The fasl file version number has changed again. (because of the
4481 bug fix involving the names of PCL MAKE-INSTANCE functions)
4483 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4484 * bug fix: Floating point exceptions are treated much more
4485 consistently on the x86/Linux and PPC/Linux platforms.
4486 * Array initialization with :INITIAL-ELEMENT is now much faster for
4487 cases when the compiler cannot open code the array creation, but
4488 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4489 array accesses have also seen a speed increase.
4490 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4491 specified. (This was at the root of some bad interactions between
4492 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4494 * bug fix: Internal error arguments for undefined functions are now
4495 computed correctly on the PPC/Linux platform.
4496 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4497 Raymond Toy's patch for CMU CL)
4498 * Support for the Solaris 9 operating environment has been included
4499 (thanks to Daniel Merritt)
4500 * A very ugly but hopefully complete draft of the missing FFI chapter
4501 of the manual has been created by reformatting the corresponding
4502 CMU CL manual chapter into (currently very ugly and incoherent)
4503 DocBook and bringing it up to date for SBCL behavior. Thus, the
4504 manual is now essentially complete, at least by my extreme
4505 once-and-only-once standards, whereby it's acceptable to refer to
4506 the doc strings of SB-EXT functions as the primary documentation.
4507 * The fasl file version number has changed again, due to cleanup of
4508 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4509 is no longer a static symbol.)
4511 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4512 * SBCL now builds with OpenMCL (version 0.12) as the
4513 cross-compilation host; also, more progress has been made toward
4514 bootstrapping under CLISP.
4515 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4517 * bug 158 fixed: The compiler can now deal with integer loop
4518 increments different from 1; fixing this turned out also to fix
4520 * bug 169 fixed: no more bogus warnings about using lexical bindings
4521 despite the presence of perfectly good SPECIAL declarations (thanks
4522 to David Lichteblau)
4523 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4524 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4525 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4527 * bug 180 fixed: Method combination specifications no longer ignore
4528 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4529 * bug fix: Structure type predicate functions now check their argument
4530 count as they should.
4531 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4532 correctly. (thanks to Pierre Mai)
4533 * minor incompatible change: The --noprogrammer option is deprecated
4534 in favor of the new --disable-debugger option, which is very similar.
4535 (The major difference is that it takes effect at a slightly different
4536 time at startup, causing handling of errors in --sysinit and
4537 --userinit files will be affected differently.) The
4538 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4539 been added to allow this functionality to be controlled from ordinary
4540 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4541 maintainers, who might want to run non-interactive scripts to
4542 build SBCL cores which will later be used interactively.)
4543 * minor incompatible change: The LOAD function no longer, when given
4544 a wild pathname to load, loads all files matching that pathname.
4545 Instead, an error of type FILE-ERROR is signalled.
4547 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4548 * bug 147 fixed: The compiler preserves its block link/count
4549 invariants more correctly now so that it doesn't crash. (thanks
4551 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4553 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4554 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4555 no-value-for-this-character as NIL (as specified by ANSI).
4556 * HOST-NAMESTRING on physical pathnames now returns a string that is
4557 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4558 (thanks to Christophe Rhodes)
4559 * The Alpha port handles icache flushing more correctly. (thanks to
4561 * More progress has been made toward bootstrapping under CLISP. (thanks
4562 to Christophe Rhodes)
4563 * The fasl file format has changed again, because dynamic loading
4564 on OpenBSD (which has non-ELF object files) motivated some cleanups
4565 in the way that foreign symbols are transformed and passed around.
4566 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4567 is no longer treated as whitespace by the reader, but instead as
4568 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4569 |A
\7fB|, instead of A as it used to.
4571 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4572 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4573 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4574 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4575 this as of 0.7.1.45, but was left out of the previous news section
4576 (thanks to Dan Barlow)
4577 * SBCL now runs on the Solaris operating system on SPARC architectures
4578 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4579 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4580 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4581 * SPARC backend cleanups, allowing builds of cores optimized for V8
4582 and V9 SPARCS, and also emission of code targeted to a particular
4583 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4585 * SBCL is closer to bootstrapping under CLISP, thanks to various
4586 fixes by Christophe Rhodes.
4587 * The fasl file format has changed again, to allow the compiler's
4588 INFO database to support symbol macros.
4589 * The user manual (in doc/) is formatted into HTML more nicely.
4590 (thanks to coreythomas)
4591 * The system is smarter about SUBTYPEP relationships, especially
4592 those involving NOT types (including types such as ATOM which are
4593 represented internally using NOT types). Thus SUBTYPEP is less
4594 likely to return (VALUES NIL NIL) in general, and in particular
4595 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4597 * The fasl file format has changed again, because the internal
4598 representation of types now includes a new slot to support the new
4599 SUBTYPEP-of-NOT-types logic.
4600 * (not a change in the main branch of SBCL, but a related prototype
4601 which can hopefully be merged into the main branch of SBCL in the
4602 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4603 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4604 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4605 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4606 dispatch macro character combinations. (thanks to Alexey Dejneka)
4607 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4608 that superficially look like logical namestrings correctly.
4609 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4611 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4612 default supplied-p) for &optional and &key arguments. (thanks to
4615 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4616 * incompatible change: The compiler is now less aggressive about
4617 tail call optimization, doing it only when (> SPACE DEBUG) or
4618 (> SPEED DEBUG). (This is an incompatible change because there are
4619 programs which relied on the old CMU-CL-style behavior to optimize
4620 away their unbounded recursion which will now die of stack overflow.)
4621 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4622 for non-GENCGC systems has been increased to 20M (since that
4623 seems much closer to the likely performance optimum for modern
4624 systems than the old 4M value was)
4625 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4626 and *DEBUG-PRINT-LEVEL*
4627 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4628 of CMU CL's support for SPARC, and various endianness and other
4629 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4630 * new syntactic sugar for the Unix command line: --load foo.bar is now
4631 an alternate notation for --eval '(load "foo.bar")'.
4633 ** The system now detects stack overflow and handles it gracefully,
4634 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4635 optimization settings. (This is a good thing in general, and
4636 its introduction in this version should be particularly timely
4637 for anyone whose code fails because of suppression of tail
4639 ** The system now hunts for the C variable "environ" in a more
4640 devious way, to avoid segfaults when the C library version differs
4641 between compile time and run time. (thanks to Christophe Rhodes)
4642 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4643 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4644 ** The compiler no longer issues bogus style warnings for undefined
4645 classes in the same source file as the DEFCLASSes which defined
4646 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4648 ** fixes in CONDITION class precedence list for undefined function
4649 errors (thanks to Alexei Dejneka)
4650 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4651 correctly. (thanks to Dan Barlow)
4652 ** portability fixes aiming at bootstrapping under CLISP (thanks
4653 to Dave McDonald and Christophe Rhodes)
4654 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4655 ** fixes in type translation and and type inference (thanks to
4657 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4658 ** various fixes in the new ports (thanks to Dan Barlow)
4659 * several changes related to debugging:
4660 ** suppression of tail recursion, as noted above
4661 ** stack overflow detection, as noted above
4662 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4663 is now the default. (For some time encapsulation has been more
4664 reliable than the breakpoint-based :ENCAPSULATE NIL
4665 implementation, at least on X86 systems; and I just noticed that
4666 encapsulation also seems closer to the spirit of the ANSI
4669 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4671 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4672 up properly again. (There was a packaging bug in 0.7.0 which
4673 left their definitions in SB-SYS::LOAD-FOREIGN and
4674 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4675 vital for most things which interface to C-level interfaces,
4676 like extensions working with sockets or databases or
4677 Perl-compatible regexes or whatever, and the need to fix
4678 this bug is the main reason that 0.7.1 was released so
4680 ** DEFGENERIC is now choosier about the methods it redefines, so that
4681 reLOADing a previously-LOADed file containing DEFGENERICs does
4682 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4683 cycle now works as it should. (thanks to Alexey Dejneka)
4684 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4685 fixed by Christophe Rhodes. (He actually submitted this patch
4686 months ago, and I delayed until after 0.7.0.)
4687 ** Bug 111 (internal compiler confusion about runtime checks on
4688 FUNCTION types) was fixed by Alexey Dejneka.
4689 * Some internal cleanups (getting rid of variables which aren't
4690 needed now that the byte interpreter is gone) caused the fasl
4691 file format number to change again.
4693 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4694 * major incompatible change: The default fasl file extension, i.e. the
4695 default extension for files produced by COMPILE-FILE, has changed
4696 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4698 ** There are many changes in the implementation of the compiler.
4699 SBCL is now essentially a compiler-only implementation of ANSI
4700 Common Lisp. EVAL still "interprets" a few special cases, but
4701 almost all the interesting cases are handled by creating
4702 a LAMBDA expression, calling COMPILE on it, then calling
4703 FUNCALL on the result.
4704 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4705 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4706 Since the code is newer, there might still be some new bugs
4707 (though not as many as before Martin Atzmueller's fixes:-). But
4708 the new code is substantially simpler and clearer, and hopefully
4709 any remaining bugs will be simpler, less fundamental, and more
4710 fixable then the bugs in the old code.
4711 ** The revised compiler is still a little unsteady on its feet.
4713 *** The debugging information it produces (particularly the names
4714 of FUNCTION objects) is sometimes much less useful than what
4715 the old compiler produced.
4716 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4717 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4718 within a MACROLET) has been temporarily weakened.
4719 ** There are new compiler optimizations for various functions:
4720 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4721 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4722 *** the math functions TRUNCATE, FLOOR, and CEILING
4723 *** the function-of-all-trades COERCE
4724 Mostly these should be transparent, but there's one
4725 potentially-annoying problem (bug 117): when the compiler
4726 inline-expands a function and does type analysis on the result,
4727 it can create control paths which have type mismatches, and
4728 when it can't prove that those control paths aren't taken,
4729 it will issue WARNINGs about the type mismatches. This is
4730 a particular problem in practice for the new sequence functions.
4731 It's not clear how this should be fixed, and for now, a
4732 workaround is given in the entry for 117 in the BUGS file.
4733 ** (Because of the interaction between the two previous items --
4734 occasional inlining problems and new inline expansions -- some
4735 of the new sequence function optimizations won't really kick in
4736 completely until debugging information, and then inlining, are
4737 straightened out in some future version.)
4738 * minor incompatible changes:
4739 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4740 DIRECTORY no longer implicitly promotes NIL slots of its
4741 pathname argument to :WILD. In particular, when you ask for the
4742 contents of a directory (which you used to be able to do without
4743 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4744 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4745 ** changes in behavior that ANSI explicitly defines to be
4746 implementation dependent:
4747 *** The new compiler-only implementation still conforms with ANSI,
4748 but acts a little different than before. Besides the obvious
4749 changes in performance tradeoffs (that the cost per form passed
4750 to EVAL has gone up, and the cost per form executed by EVAL
4751 has gone down), the behavior of the system changes a little
4752 because there are no longer any interpreted function objects.
4753 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4754 e.g. doing COMPILE on the output of interactive DEFUN is
4756 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4758 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4759 has changed from (:CL) to NIL.
4760 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4761 e.g. #\Newline and #\Tab, don't have names specified in the
4762 ANSI Common Lisp standard, is now based on their ASCII symbolic
4763 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4764 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4765 are no longer used for output.
4766 ** changes in internal implementation constants:
4767 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4768 4 million. (If your application spends a lot of time GCing and
4769 you have a lot of RAM, you might want to experiment with
4770 increasing it even more.)
4771 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4772 However, almost all old code should still continue to work without
4773 immediate update, as SB-C-CALL is now a (deprecated) nickname
4775 ** Old operator names in the style DEF-FOO are now deprecated in
4776 favor of new corresponding names DEFINE-FOO, for consistency with
4777 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4778 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4779 internal symbols, but a few supported extensions like
4780 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4781 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4782 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4783 etc. as you get deeper into recursive calls to the debugger
4784 command loop, instead of the old "5]", "5]]", "5]]]"
4785 sequence. (I was motivated to do this when squabbles between
4786 ILISP and SBCL left me very deeply nested in the debugger. In the
4787 short term, this change will probably provoke more ILISP/SBCL
4788 squabbles, but hopefully it will be an improvement in the long run.)
4789 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4790 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4791 function, since declaiming return types involving aliens is
4792 (1) annoyingly messy to do by hand and (2) vital to efficient
4793 compilation of code which calls such functions.
4794 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4795 longer reexported by the SB-EXT package. They're solely useful
4796 for alien code, so it seems more logical that you should get
4797 them from the SB-ALIEN package, not in SB-EXT.
4798 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4799 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4800 features. Instead, the code that they used to control is always
4801 built into the system.
4802 * many other bug fixes
4803 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4804 advantage of the new EVAL-WHEN stuff and to clean them up in
4805 general, and they are now more ANSI-compliant in a number of
4806 ways. Martin Atzmueller is responsible for a lot of this.
4807 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4809 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4810 *** correct ERROR type for various file operations
4811 *** some fixes for Lisp streams
4812 *** DEFMETHOD syntax checking
4813 *** changing old weird representation of debug information as
4814 strings (which, among their other deficiencies, don't transform
4815 correctly when you rename packages, and don't change their
4816 print representation when you change things like *PACKAGE*
4817 and *PRINT-LENGTH*) to symbols and lists of symbols
4818 He also made several improvements and fixed several bugs in DESCRIBE.
4819 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4821 *** misbehavior of WRITE-STRING/WRITE-LINE
4822 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4823 and several other LOOP problems as well
4824 *** DIRECTORY when similar filenames are present
4825 *** DEFGENERIC with :METHOD options
4826 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4827 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4828 *** argument ordering in FIND with :TEST option
4829 *** mishandled package designator argument in APROPOS-LIST
4830 *** various problems in the backquote readmacro
4831 *** a bug in APROPOS
4832 *** probably some others that I'm not describing very well here,
4833 since the CVS log documents them by reference to sbcl-devel
4834 messages, and the SourceForge archives aren't working well.:-(
4835 ** Dan Barlow improved the Alpha port (and is making progress on the
4836 PPC port, for those of you who think different).
4837 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4838 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4839 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4840 continues to work on the SPARC port (for those of you in a position
4841 to look down upon our little PC-compatible boxes from a great height).
4842 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4843 and uses that copy, rather than the current dynamic value, when
4844 it's trying to decide whether to truncate output. Thus e.g.
4845 (let ((*print-lines* 50))
4846 (pprint-logical-block (stream nil)
4848 (let ((*print-lines* 8))
4849 (print (aref possiblybigthings i) stream)))))
4850 should now truncate the logical block only at 50 lines, instead of
4851 often truncating it at 8 lines, as it did before.
4852 * The doc/cmucl/ directory, containing old CMU CL documentation
4853 from the time of the fork, is no longer part of the base system.
4854 SourceForge has shut down its anonymous FTP service, and with it
4855 my original plan for distributing the old CMU CL documentation
4856 there. For now, if you need these files you can download an old
4857 SBCL source release and extract them from it.
4858 * The fasl file version number changed again, for dozens of reasons,
4859 some of which are apparent above.
4861 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4862 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4863 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4864 patch, so that DISASSEMBLE output is much nicer.
4865 * The code in the SB-PROFILE package now seems reasonably stable.
4866 I still haven't decided what the final interface should look like
4867 (I'd like PROFILE to interact cleanly with TRACE, since both
4868 facilities use function encapsulation) but if you have a need
4869 for profiling now, you can probably use it successfully with
4870 the current CMU-CL-style interface.
4871 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4872 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4873 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4874 link now returns the dangling link itself, and for similar
4875 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4876 link itself. (In these cases the old code signalled an error and
4877 looped endlessly, respectively.) Thus, DIRECTORY now works even
4878 in the presence of dangling and cyclic symbolic links.
4879 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4880 is now a supported extension again, since the consensus on
4881 sbcl-devel was that it can be useful for ordinary development
4882 work, not just for debugging SBCL itself.
4883 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4884 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4885 that currently-defined functions might be redefined later with
4886 different return types.
4887 * Hash tables can be printed readably, as inspired by CMU CL code
4888 of Eric Marsden and SBCL code of Martin Atzmueller.
4889 * better error handling in CLOS method combination, thanks to
4890 Martin Atzmueller porting Pierre Mai's CMU CL patches
4891 * more overflow fixes for >16Mbyte I/O buffers
4892 * A bug in READ has been fixed, so that now a single Ctrl-D
4893 character suffices to cause end-of-file on character streams.
4894 In particular, now you only need one Ctrl-D at the command
4895 line (not two) to exit SBCL.
4896 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4898 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4899 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4900 does the right thing.
4901 * The implementation of some type tests, especially for CONDITION
4902 types, is now tidier and maybe faster, due to CMU CL code
4903 originally by Douglas Crosher, ported by Martin Atzmueller.
4904 * Some math functions have been fixed, and there are new
4905 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4906 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4907 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4908 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4909 likely to be built into sbcl-0.7.0.)
4910 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4911 CL, ported to SBCL by Martin Atzmueller)
4912 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4913 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4914 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4915 * There's a new slam.sh hack to shorten the edit/compile/debug
4916 cycle for low-level changes to SBCL itself, and a new
4917 :SB-AFTER-XC-CORE target feature to control the generation of
4918 the after-xc.core file needed by slam.sh.
4919 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4920 COMPILE-FILE is no longer supported, so that now every function
4921 gets an entry point, so that block compilation looks a little
4922 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4923 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4924 returns the number of bytes consed since the system started,
4925 rather than the number consed since the first time the function
4926 was called. (The new definition parallels ANSI functions like
4927 CL:GET-INTERNAL-RUN-TIME.)
4928 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4929 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4930 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4931 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4932 * Fasl file version numbers are now independent of the target CPU,
4933 since historically most system changes which required version
4934 number changes have affected all CPUs equally. Similarly,
4935 the byte fasl file version is now equal to the ordinary
4938 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4939 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4940 is no longer recognized. I apologize for this, because it was
4941 listed in SB-EXT as a supported extension, but I found that
4942 its existing behavior was poorly specified, as well as incorrectly
4943 specified, and it looked like too much of a mess to straighten it
4944 out. I have enough on my hands trying to get ANSI stuff to work..
4945 * many patches ported from CMU CL by Martin Atzmueller, with
4946 half a dozen bug fixes in pretty-printing and the debugger, and
4947 half a dozen others elsewhere
4948 * fixed bug 13: Floating point infinities are now supported again.
4949 They might still be a little bit flaky, but thanks to bug reports
4950 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4951 as flaky as they were.
4952 * The --noprogrammer command line option is now supported. (Its
4953 behavior is slightly different in detail from what the old man
4954 page claimed it would do, but it's still appropriate under the
4955 same circumstances that the man page talks about.)
4956 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4957 are now supported, and enabled by default. Thus, the compiler can
4958 handle many floating point and complex operations much less
4959 inefficiently. (Thus e.g. you can implement a complex FFT
4961 * The compiler now detects type mismatches between DECLAIM FTYPE
4962 and DEFUN better, and implements CHECK-TYPE more correctly, and
4963 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4964 thanks to patches from Martin Atzmueller.
4965 * various fixes to make the cross-compiler more portable to
4966 ANSI-conforming-but-different cross-compilation hosts (notably
4967 Lispworks for Windows, following bug reports from Arthur Lemmens)
4968 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4969 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4970 fixed thanks to Pierre Mai's CMU CL patches.
4971 * fixes to keep the system from overflowing internal counters when
4972 it tries to use i/o buffers larger than 16M bytes
4973 * fixed bug 45a: Various internal functions required to support
4974 complex special functions have been merged from CMU CL sources.
4975 (When I was first setting up SBCL, I misunderstood a compile-time
4976 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4977 * improved support for type intersection and union, fixing bug 12
4978 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4979 more obscure bugs as well
4980 * some steps toward byte-compiling non-performance-critical
4981 parts of the system, courtesy of patches from Martin Atzmueller
4982 * Christophe Rhodes has made some debian packages of sbcl at
4983 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4984 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4985 stable, but are nonetheless usable. When he's ready, I'd be happy
4986 to add them to the SourceForge "File Releases" section. (And if
4987 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4988 * new fasl file format version number (because of changes in
4989 internal representation of (OR ..) types to accommodate the new
4990 support for (AND ..) types, among other things)
4992 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4993 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4995 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4997 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4998 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4999 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5000 * DESCRIBE now works on structure objects again.
5001 * Most function call argument type mismatches are now handled as
5002 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5003 know whether the function will be redefined before the call is
5004 executed. (The compiler could flag local calls with full WARNINGs,
5005 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5006 it doesn't keep track of enough information to know whether calls
5007 are local in this sense.)
5008 * Compiler output is now more verbose, with messages truncated
5009 later than before. (There should be some supported way for users
5010 to override the default verbosity, but I haven't decided how to
5011 provide it yet, so this behavior is still controlled by the internal
5012 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5013 src/compiler/ir1util.lisp.)
5014 * Fasl file format version numbers have increased again, because
5015 support for the Gray streams extension changes the layout of the
5016 system's STREAM objects.
5017 * The Gray subclassable streams extension now works, thanks to a
5018 patch from Martin Atzmueller.
5019 * The full LOAD-FOREIGN extension (not just the primitive
5020 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5021 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5022 but like most other programs, it defaults to copying the Unix
5023 environment from the original process instead of starting the
5024 new process in an empty environment.
5025 * Extensions which manipulate the Unix environment now support
5026 an :ENVIRONMENT keyword option which doesn't smash case or
5027 do other bad things. The CMU-CL-style :ENV option is retained
5028 for porting convenience.
5029 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5030 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5032 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5034 * A patch from Martin Atzmueller seems to have solved the SIGINT
5035 problem, and as far as we know, signal-handling now works cleanly.
5036 (If you find any new bugs, please report them!)
5037 * The system no longer defaults Lisp source file names to types
5038 ".l", ".cl", or ".lsp", but only to ".lisp".
5039 * The compiler no longer uses special default file extensions for
5040 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5041 seems to expect a single default extension for all compiled code,
5042 and there's no compelling reason to try to stretch the standard
5043 to allow two different extensions.) Instead, byte-compiled files
5044 default to the same extension as native-compiled files.
5045 * Fasl file format version numbers have increased again, because
5046 a rearrangement of internal implementation packages made some
5047 dumped symbols in old fasl files unreadable in new cores.
5048 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5049 many fewer weird special cases.
5050 * Bug #17 (differing COMPILE-FILE behavior between logical and
5051 physical pathnames) has been fixed, and some related misbehavior too,
5052 thanks to a patch from Martin Atzmueller.
5053 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5054 by Tim Moore, ported to SBCL by Martin Atzmueller.
5055 * Martin Atzmueller fixed several filesystem-related problems,
5056 including bug #36, in part by porting CMU CL patches, which were
5057 written in part by Paul Werkowski.
5058 * More compiler warnings in src/runtime/ are gone, thanks to
5059 more patches from Martin Atzmueller.
5060 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5063 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5065 * DESCRIBE now works on CONDITION objects.
5066 * The debugger now handles errors which arise when trying to print
5067 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5069 * The build system now uses an additional file, customize-target-features.lisp,
5070 to allow local modifications to the target *FEATURES* list. (The point of
5071 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5072 debugging features enabled, without having to worry about propagating it
5073 into everyone's system when I do a "cvs update".) When no
5074 customize-target-features.lisp file exists, the target *FEATURES* list
5075 should be constructed the same way as before.
5076 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5077 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5078 warn about behavior which is undefined under the ANSI spec. Note: This
5079 is specified by ANSI, but it's not very popular with programmers.
5080 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5081 macro in the SBCL sources for an example of a workaround which you
5082 might use to make portable ANSI-standard code which does what you want.
5083 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5084 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5085 when it's used as a non-toplevel form. (This is required in order
5086 to implement the DEFCONSTANT-EQX macro.)
5087 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5088 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5089 funny things, due to bugs in the implementation of EVAL-WHEN
5090 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5091 non-toplevel DEFCONSTANTs are uncommon.)
5092 * The core file version number and fasl file version number have been
5093 incremented, because the old noncompliant DEFCONSTANT behavior involved
5094 calling functions which no longer exist, and because I also took the
5095 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5096 * fixed bug 1 (error handling before read-eval-print loop starts), and
5097 redid debugger restarts and related debugger commands somewhat while
5099 ** The QUIT debugger command is gone, since it did something
5100 rather different than the SB-EXT:QUIT command, and since it never
5101 worked properly outside the main toplevel read/eval/print loop.
5102 Invoking the new TOPLEVEL restart provides the same functionality.
5103 ** The GO debugger command is also gone, since you can just invoke
5104 the CONTINUE restart directly instead.
5105 ** The TOP debugger command is also gone, since it's redundant with the
5106 FRAME 0 command, and since it interfered with abbreviations for the
5108 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5110 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5111 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5112 some porting work by Martin Atzmueller)
5113 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5114 with a boatload of patches which he ported to SBCL. Now that those
5116 ** The system tries to make sure that its low-priority messages
5117 are prefixed by semicolons, to help people who like to use
5118 syntax highlighting in their ILISP buffer. (This patch
5119 was originally due to Raymond Toy.)
5120 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5121 patches originally written by Raymond Toy.
5122 ** The compiler understands coercion between single-value and
5123 multiple-VALUES type expressions better, getting rid of some very
5124 weird behavior, thanks to patches originally by Robert MacLachlan
5125 and Douglas Crosher.
5126 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5127 lambda lists, thanks to a patch originally by Pierre Mai.
5128 ** The system no longer bogusly warns about "abbreviated type
5130 ** The compiler gets less confused by inlining and RETURN-FROM,
5131 thanks to some patches originally by Tim Moore.
5132 ** The system no longer hangs when dumping circular lists to fasl
5133 files, thanks to a patch originally from Douglas Crosher.
5134 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5135 undefined function error.
5136 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5137 in structure slot initforms) for now, documented workaround instead:-|
5138 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5139 * fixed bug 5: added stubs for various Gray stream functions called
5140 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5141 installed, at least appropriate type errors are generated
5142 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5143 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5144 consistently in DEFMETHOD forms.
5145 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5146 it doesn't seem to affect SBCL after all
5147 * The C runtime system now builds with better optimization and many
5148 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5150 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5152 * The system is now under CVS at SourceForge (instead of the
5153 CVS repository on my home machine).
5154 * The new signal handling code has been tweaked to treat register
5155 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5156 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5157 downstream, e.g. in debug-int.lisp, has implicit dependencies
5158 on the unsignedness of integer representation of machine words,
5159 and that caused the system to bomb out with infinite regress
5160 when trying to recover from type errors involving signed values,
5161 e.g. (BUTLAST '(1 2 3) -1).)
5162 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5163 (This was one of the bugs Peter Van Eynde reported back in July.)
5164 * The system now uses code inspired by Colin Walters' O(N)
5165 implementation of MAP (from the cmucl-imp@cons.org mailing
5166 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5167 inline the MAP operation, and there is more than one
5168 sequence argument to the MAP call (so that it can't just
5169 do ETYPECASE once and for all based on the type of the
5170 single sequence argument). (The old non-inline implementation
5171 of the general M-argument sequence-of-length-N case required
5172 O(M*N*N) time when any of the sequence arguments were LISTs.)
5173 * The QUIT :UNIX-CODE keyword argument has been renamed to
5174 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5175 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5177 * Raymond Wiker's patches to port dynamic loading from Linux to
5178 FreeBSD have been added.
5179 * The BUGS file is now more nearly up to date, thanks in large part
5180 to Martin Atzmueller's review of it.
5181 * The debugger now flushes standard output streams before it begins
5182 its output ("debugger invoked" and so forth).
5183 * The core version number and fasl file version number have both
5184 been incremented, because of incompatible changes in the layout
5186 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5187 used to not be called for a saved Lisp image.)
5188 * Martin Atzmueller's version of a patch to fix a compiler crash,
5189 as posted on sbcl-devel 13 September 2000, has been installed.
5190 * Instead of installing Martin Atzmueller's patch for the
5191 compiler transform for SUBSEQ, I deleted the compiler transform,
5192 and transforms for some similar consing operations.
5193 * A bug in signal handling which kept TRACE from working on OpenBSD
5195 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5196 away by constant folding
5197 * The system now defines its address space constants in one place
5198 (in the Lisp sources), and propagates them automatically elsewhere
5199 (through GENESIS and the sbcl.h file). Therefore, patching the
5200 address map is less unnecessarily tedious and error-prone. The
5201 Lisp names of address space constants have also been systematized.
5202 * CVS tags like dollar-Header-dollar have been removed from
5203 the sources, because they have never saved me trouble and
5204 they've been source of trouble working with patches and other
5205 diff-related operations.
5206 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5207 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5209 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5211 * The system has been ported to OpenBSD.
5212 * The system now compiles with a simple "sh make.sh" on the systems
5213 that it's supported on. I.e., now you no longer need to tweak
5214 text in the target-features.lisp-expr and symlinks in src/runtime/
5215 by hand, the make.sh takes care of it for you.
5216 * The system is no longer so grossly inefficient when compiling code
5217 involving vectors implemented as general (not simple) vectors (VECTOR T),
5218 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5219 which dares to use the various sequence functions on non-simple
5220 vectors, takes less of a performance hit.
5221 * There is now a primitive type predicate VECTOR-T-P
5222 to test for the (VECTOR T) type, so that e.g.
5223 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5224 can now be compiled with some semblance of efficiency. (The old code
5225 turned the type declaration into a full call to %TYPEP at runtime!)
5226 * AREF on (VECTOR T) is still not fast, since it's still compiled
5227 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5228 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5229 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5230 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5231 without making full calls to SUBTYPEP at runtime.
5232 (Some analogous efficiency issues for non-simple vectors specialized to
5233 element types other than T, or for non-simple multidimensional arrays,
5234 have not been addressed. They could almost certainly be handled the
5235 same way if anyone is motivated to do so.)
5236 * The changes in array handling break binary compatibility, so
5237 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5238 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5239 instead of (VALUES T T).
5240 * By following the instructions that Dan Barlow posted to sbcl-devel
5241 on 2 July 2000, I was able to enable primitive dynamic object
5242 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5243 functionality is not implemented (since it calls ld to resolve
5244 library references automatically, requiring RUN-PROGRAM for its
5245 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5246 try to resolve library references) is now supported.
5247 * The system now flushes the standard output streams when it terminates,
5248 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5249 them at several other probably-convenient times, e.g. in each pass of
5250 the toplevel read-eval-print loop, and after evaluating a form given
5251 as an "--eval" command-line option. (These changes were motivated by a
5252 discussion of stream flushing issues on cmucl-imp in August 2000.)
5253 * The source transform for TYPEP of array types no longer assumes
5254 that an array whose element type is a not-yet-defined type
5255 is implemented as an array of T, but instead punts, so that the
5256 type will be interpreted at runtime.
5257 * There is now some support for cross-compiling in make.sh: each of
5258 the phases of make.sh has its own script. (This should be transparent
5259 to people doing ordinary, non-cross-compile builds.)
5260 * Since my laptop doesn't have hundreds of megabytes of memory like
5261 my desktop machine, I became more motivated to do some items on
5262 my to-do list in order to reduce the size of the system a little:
5263 ** Arrange for various needed-only-at-cold-init things to be
5264 uninterned after cold init. To support this, those things have
5265 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5266 symbols with such names are now uninterned after cold init).
5267 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5268 fasl files for cold load.
5269 ** Remove the old compiler structure pooling code (which used to
5270 be conditional on the target feature :SB-ALLOC) completely.
5271 ** Redo the representation of some data in cold init to be more compact.
5272 (I also looked into supporting byte compiled code at bootstrap time,
5273 which would probably reduce the size of the system a lot, but that
5274 looked too complicated, so I punted for now.)
5275 * The maximum signal nesting depth in the src/runtime/ support code has
5276 been reduced from 4096 to 256. (I don't know any reason for the very
5277 large old value. If the new smaller value turns out to break something,
5278 I'll probably just bump it back up.)
5279 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5281 * Many, many bugs reported by Peter Van Eynde have been added to
5282 the BUGS list; some have even been fixed.
5283 * While enabling dynamic object file loading, I tried to make the
5284 code easier to understand, renaming various functions and variables
5285 with less ambiguous names, and changing some function calling
5286 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5287 * While trying to figure out how to do the OpenBSD port, I tried to
5288 clean up some of the code in src/runtime/. In particular, I dropped
5289 support for non-POSIX signal handling, added various comments,
5290 tweaked the code to reduce the number of compilation warnings, and
5291 renamed some files to increase consistency.
5292 * To support the new automatic configuration functionality in make.sh,
5293 the source file target-features.lisp-expr has been replaced with the
5294 source file base-target-features.lisp-expr and the machine-generated
5295 file local-target-features.lisp-expr.
5296 * fixed a stupid quoting error in make.sh so that using CMU CL
5297 "lisp -batch" as cross-compilation host works again
5299 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5301 * DESCRIBE no longer tries to call itself recursively to describe
5302 bound/fbound values, so that it no longer fails on symbols which are
5303 bound to themselves (like keywords, T, and NIL).
5304 * DESCRIBE now works on generic functions.
5305 * The printer now prints less-screwed-up representations of closures
5306 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5307 * A private symbol is used instead of the :EMPTY keyword previously
5308 used to mark empty slots in hash tables. Thus
5309 (DEFVAR *HT* (MAKE-HASH-TABLE))
5310 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5311 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5312 now does what ANSI says that it should. (You can still get
5313 similar noncompliant behavior if bang on the hash table
5314 implementation with all the symbols you get back from
5315 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5316 This breaks binary compatibility, since tests for equality to
5317 :EMPTY are wired into things like the macroexpansion of
5318 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5320 * There's now a minimal placeholder implementation for CL:STEP,
5321 as required by ANSI.
5322 * An obscure bug in the interaction of the normal compiler, the byte
5323 compiler, inlining, and structure predicates has been patched
5324 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5325 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5327 * Missing ordinary arguments in a macro call are now detected even
5328 when the macro lambda list contains &KEY or &REST.
5329 * The debugger no longer complains about encountering the top of the
5330 stack when you type "FRAME 0" to explicitly instruct it to go to
5331 the top of the stack. And it now prints the frame you request even
5332 if it's the current frame (instead of saying "You are here.").
5333 * As specified by ANSI, the system now always prints keywords
5334 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5336 * The default initial SIZE of HASH-TABLEs is now smaller.
5337 * Type information from CLOS class dispatch is now propagated
5338 into DEFMETHOD bodies, so that e.g.
5339 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5341 is now basically equivalent to
5342 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5343 (DECLARE (TYPE SINGLE-FLOAT X))
5345 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5346 operation, without having to do run-time type dispatch.
5347 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5348 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5349 * Since I don't seem to be making big file reorganizations very often
5350 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5351 is overflowing my ability to conveniently back them up), I've finally
5352 checked the system into CVS. (The CVS repository is on my home system,
5353 not at SourceForge -- putting it on SourceForge might come later.)
5354 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5355 high-level GC-NOTIFY-FOO functions send their output. (There's
5356 still very little control of where low-level verbose GC functions
5357 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5358 less than it used to -- the GC-NOTIFY-FOO functions are now under
5359 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5360 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5361 in only one place in the source code, and propagates it automatically
5362 everywhere that it's needed. Thus e.g. when I bump the version from
5363 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5364 * The C source files now include boilerplate legalese and documentation
5365 at the head of each file (just as the Lisp source files already did).
5366 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5367 to his page will be replaced with a link to his new CLiki service.
5369 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5371 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5372 * The build process now looks for GNU make under the default name "gmake",
5373 instead of "make" as it used to. If GNU make is not available as "gmake"
5374 on your system, you can change this default behavior by setting the
5375 GNUMAKE environment variable.
5376 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5377 can build without error under CMU CL.
5379 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5381 * There is now a partial SBCL user manual (with some new text and some
5382 text cribbed from the CMU CL manual).
5383 * The beginnings of a profiler have been added (starting with the
5384 CMU CL profiler and simplifying and cleaning up). Eventually the
5385 main interface should be through the TRACE macro, but for now,
5386 it's still accessed through vaguely CMU-CL-style functions and macros
5387 exported from the package SB-PROFILE.
5388 * Some problems left over from porting CMU CL to the new
5389 cross-compilation bootstrap process have been cleaned up:
5390 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5391 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5392 part when getting rid of the compiler *BACKEND* stuff.)
5393 ** The value of *NULL-TYPE* was screwed up, because it was
5394 being initialized before the type system knew the final
5395 definition of the 'NULL type. This screwed up several key
5396 optimizations in the compiler, causing inefficiency in all sorts
5397 of places. (I found it because I wanted to understand why
5398 GET-INTERNAL-RUN-TIME was consing.)
5399 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5400 PROCLAIM FTYPE information. Unfortunately this broke binary
5401 compatibility again, since now the forms output by DEFGENERIC
5402 to refer to functions which didn't exist in 0.6.3.
5403 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5404 can use the new (as of 0.6.3) transform for SOME into MAP into
5406 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5407 values to (INTEGER 0 1000000), so that the time code will no longer
5408 occasionally get blown up by Linux returning 1000000 microseconds
5409 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5410 its output conform to the ANSI spec. (Alas, this makes its output
5411 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5412 * A full call to MAP NIL with a single sequence argument no longer conses.
5413 * fixes to problems pointed out by Martin Atzmueller:
5414 * The manual page no longer talks about multiprocessing as though
5415 it were currently supported.
5416 * The ILISP support patches have been removed from the distribution,
5417 because as of version 5.10.1, ILISP now supports SBCL without us
5418 having to maintain patches.
5419 * added a modified version of Raymond Toy's recent CMU CL patch for
5420 EQUALP comparison of HASH-TABLE
5422 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5424 * The system still can't cross-compile itself with
5425 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5426 entails), but at least it can compile more of itself that way
5427 than it used to be able to, and various buglets which were uncovered
5428 by trying to cross-compile itself that way have now been fixed.
5429 * This release breaks binary compatibility again. This time
5430 at least I've incremented the FASL file format version to 2, so that the
5431 problem can be detected reliably instead of just causing weird errors.
5432 * various new style warnings:
5433 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5434 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5435 ** using the lexical binding of a variable named in the *FOO* style
5436 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5437 as specified by ANSI.
5438 * *RANDOM-STATE* is no longer automatically initialized from
5439 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5440 default behavior of the system is to repeat its behavior every time
5441 it's run. If you'd like to change this behavior, you can always
5442 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5443 old convention there was no comparably easy way to get the system to
5444 repeat its behavior every time it was run.
5445 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5446 FTYPE declarations has been removed, in favor of their ANSI
5447 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5448 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5449 the types of their sequence arguments can be determined at compile time.
5450 This is done through a new open code expansion for MAP which eliminates
5451 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5452 argument types can be determined at compile time.
5453 * The optimizer now transforms COERCE into an identity operation when it
5454 can prove that the coerced object is already of the correct type. (This
5455 can be a win for machine generated code, including the output of other
5456 optimization transforms, such as the MAP transform above.)
5457 * Credit information has been moved from source file headers into CREDITS.
5458 * Source file headers have been made more standard.
5459 * The CASE macro now compiles without complaining even when it has
5462 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5464 * (Note that the way that the PCL macroexpansions were rewritten
5465 to accommodate the change in DEFGENERIC below breaks binary
5466 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5467 not run under sbcl-0.6.2. Once we get out of alpha releases,
5468 i.e. hit release 1.0.0, we'll probably try to maintain binary
5469 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5470 and sbcl-1.4.4. Until then, however, it might be fairly common
5471 for maintenance releases to break binary compatibility.)
5472 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5474 * The reporting of unhandled signals has been changed to print some
5475 explanatory text as well as the report form. (Previously only
5476 the report form was printed.)
5477 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5478 it defines, so that the compiler no longer issues undefined function
5479 warnings for compiled-but-not-yet-loaded generic functions.
5480 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5481 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5482 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5483 section of the ANSI spec are supported.
5484 * The "" nickname for the "KEYWORD" package has been removed.
5485 The reader still handles symbol tokens which begin with a package marker
5486 as keywords, but it doesn't expose its mechanism for doing so in the
5487 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5488 * The system now issues STYLE-WARNINGs for contradictory TYPE
5489 proclamations. (Warnings for contradictory FTYPE proclamations would
5490 be nice too, but those can't be done usefully unless the type system
5491 is made smarter about FUNCTION types.)
5492 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5493 systematized, so that "*target-*.lisp is supposed to exist only on the
5494 target and imply that there's a related file which exists on the
5495 host, and *host-*.lisp is supposed to exist only on the host and imply
5496 that there's a related file which exists on the target. This involves a
5497 lot of renaming. Hopefully the acute confusion caused by the renaming
5498 will be justified by the reduction in chronic confusion..
5499 ** runtime-type.lisp -> early-target-type.lisp
5500 ** target-type.lisp -> late-target-type.lisp
5501 ** early-host-format.lisp -> early-format.lisp
5502 ** late-host-format.lisp -> late-format.lisp
5503 ** host-error.lisp -> misc-error.lisp
5504 ** early-error.lisp -> early-target-error.lisp
5505 ** late-error.lisp -> late-target-error.lisp
5506 ** host-defboot.lisp -> early-defboot.lisp
5507 ** code/misc.lisp -> code/target-misc.lisp
5508 ** code/host-misc.lisp -> code/misc.lisp
5509 ** code/numbers.lisp -> code/target-numbers.lisp
5510 ** code/early-numbers.lisp -> numbers.lisp
5511 ** early-host-type.lisp -> early-type.lisp
5512 ** late-host-type.lisp -> late-type.lisp
5513 ** host-typep.lisp -> typep.lisp
5514 ** load.lisp -> target-load.lisp
5515 ** host-load.lisp -> load.lisp
5516 ** host-disassem.lisp -> disassem.lisp
5517 ** host-insts.lisp -> insts.lisp
5518 ** byte-comp.lisp -> target-byte-comp.lisp
5519 ** host-byte-comp.lisp -> byte-comp.lisp
5520 ** host-signal.lisp -> signal.lisp
5521 ** host-defstruct.lisp -> defstruct.lisp
5522 ** late-target-type.lisp -> deftypes-for-target.lisp
5523 Furthermore, several other previously target-only files foo.lisp (e.g.
5524 hash-table.lisp and random.lisp) have been split into a target-and-host
5525 foo.lisp file and a target-only target-foo.lisp file, with their key type
5526 definitions in the target-and-host part, so that the cross-compiler will
5527 know more about target types.
5528 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5529 gone away. In their place are various *BACKEND-FOO* variables
5530 corresponding to the slots of the old structure.
5531 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5532 into the target SBCL has been fixed.
5533 * The chill.lisp system for loading cold code into a running SBCL
5535 * Support for the CMU CL "scavenger hook" extension has been removed.
5536 (It was undocumented and unused in the CMU CL sources that SBCL was
5537 derived from, and stale in sbcl-0.6.1.)
5538 * Various errors in the cross-compiler type system were detected
5539 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5540 (enabling various consistency checks). Many of them were fixed,
5541 but some hard problems remain, so the compiler is back to
5542 running without *TYPE-SYSTEM-INITIALIZED* for now.
5543 * As part of the cross-compiler type system cleanup, I implemented
5544 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5545 * I have started adding UNCROSS calls throughout the type system
5546 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5547 on cross-compiler input files will be able to go away, and various
5549 * CONSTANTP now returns true for quoted forms (as explicitly required
5552 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5554 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5555 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5556 (MAKE-LIST -1). In the longer term, it ought to become true
5557 that declarations are assertions even at SAFETY 1. For now, it's not
5558 quite true even at SAFETY 3, but it's at least more nearly true..
5559 (Note that this change seems to increases the size of the system by
5560 O(5%) and to decrease the speed of the compiler by 20% or more.)
5561 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5562 for the problem of printing dozens of lines of distracting information
5563 about low-level system machinery as part of the top stack frame
5564 on entry to the debugger when an undefined function was called.
5565 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5566 is not reset to COMMON-LISP-USER.
5567 * Compilation of stuff related to dyncount.lisp has been made conditional
5568 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5569 smaller. The various dyncount-related symbols have been moved into
5570 a new "SB-DYNCOUNT" package.
5571 * tty-inspect.lisp has been renamed to inspect.lisp.
5572 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5573 feature has gone away. (When we eventually port to other flavors of
5574 libc and/or Unix, we'll try to make the differences between flavors
5575 invisible at the user level.)
5576 * Various other *FEATURES* tags, and/or their associated conditionals,
5577 have been removed if obsolescent, or given better documentation, or
5578 sometimes given more-mnemonic names.
5580 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5582 * tidied up "make.sh" script
5583 * tidied up system directory structure
5584 * better "clean.sh" behavior
5585 * added doc/FOR-CMUCL-DEVELOPERS
5586 * many many small tweaks to output format, e.g. removing possibly-confusing
5587 trailing #\. character in DESCRIBE-INSTANCE
5588 * (EQUALP #\A 'A) no longer signals an error.
5589 * new hashing code, including EQUALP hashing
5590 * tidied up Lisp initialization and toplevel
5591 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5592 * command line argument processing
5593 * added POSIX-GETENV function to deal with Unix-ish environment variables
5594 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5595 terminating SBCL on EOF
5596 * non-verbose GC by default
5597 * There is no more "sbcl" shell script; the sbcl file is now the C
5598 runtime executable (just like CMU CL).
5599 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5601 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5602 symbol and package information as Lisp native symbol and package objects
5603 instead of strings naming symbols and strings naming packages. This way,
5604 whenever packages are renamed (as in warm init), debug information is
5605 transformed along with everything else.
5606 * tweaked the optimization policy declarations which control the building
5607 of SBCL itself. Now, among other things, the system no longer saves
5608 source location debugging information. (This helps two problems at once
5609 by reducing SBCL size and by keeping SBCL from trying to look for its
5610 sources -- which may not exist -- when reporting errors.)
5611 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5612 debugging and testing purposes
5613 * cleaned up printing, making the printer call PRINT-OBJECT for
5614 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5615 methods, giving nearly-ANSI behavior
5616 * converted almost all special variables to use *FOO* naming convention
5617 * deleted PARSE-TIME functionality, since it can be done portably
5618 * moved some files out of cold init into warm init
5619 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5621 * regularized formatting of source files
5622 * added an install.sh script
5623 * fixed ridiculous memory usage of cross-compiler by making
5624 compiler/alloc.lisp not try to do pooling unless it can hook
5625 itself into the GC of the cross-compilation host. Now the system
5626 builds nicely on my old laptop.
5627 * added :SB-ALLOC in target-features.lisp-expr
5628 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5629 was not implemented)
5630 * re-did condition handling and note reporting in the compiler. Notes
5631 are no longer handled by signalling conditions. Style warnings
5632 and warnings are handled more correctly and reported in such a way
5633 that it's easy to find one or the other in your output (so that you
5634 can e.g. figure out which of many problems caused COMPILE-FILE to
5636 * changed the severity of several compiler warnings from full WARNING
5637 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5638 compiler note reporting so that it doesn't use the condition system
5639 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5640 COMPILE-FILE command)
5641 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5642 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5643 no longer supported, since their implementation was deeply intertwingled
5644 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5645 * removed bogus "support" for compiler macros named (SETF FOO), and
5646 removed the compiler macro for SETF INFO (but only after making a fool
5647 of myself on the cmucl-imp mailing list by posting a bogus patch for
5648 DEFINE-COMPILER-MACRO..)
5649 * Compiled files containing forms which have side effects on the Lisp
5650 reader (such as DEFPACKAGE forms) are now handled more correctly.
5651 (Compiler queuing of top level lambdas has been suppressed by setting
5652 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5653 * deleted various currently-unused source files, e.g. gengc.lisp. They
5654 may be added back at some point e.g. when porting to other architectures,
5655 but until they are it's distracting to distribute them and to try to
5657 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5658 there were so many of them they're just distractions, and UNCROSS is
5659 known to be able to handle the current sources
5660 * moved PROFILE functionality into TRACE, so that it will be clear
5661 how the wrapping and unwrapping of functions when you profile them
5662 interacts with the wrapping and unwrapping of functions when you
5663 trace them. (Actually, the functionality isn't there yet, but at least
5664 the interface specification is there. Hopefully, the functionality will
5665 arrive with some future maintenance release.)
5666 * removed host-oops.lisp
5667 * changed signature of QUIT function to allow UNIX-CODE argument
5668 * fixed READ-SEQUENCE bug
5669 * tweaked verbose GC output so that it looks more like the progress
5670 output that ANSI specifies for functions like LOAD
5671 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5672 * added <http://sbcl.sourceforge.com> to the banner information printed by